JP3796572B2 - Switching valve for water purifier - Google Patents

Description

The present invention relates to a switching valve that is attached to a faucet of a water supply so as to switch whether tap water (raw water) is sent to a water purifier outside the apparatus or discharged as it is.
[0001]
BACKGROUND OF THE INVENTION
[0002]
[Prior art]
In recent years, water purifiers for household use have come to be used frequently. With this water purifier, tap water (raw water) is further purified, and minerals that make water delicious are added. It has become easier to produce “delicious water” at home.
[0003]
Such a water purifier is generally connected as shown in FIG. In other words, a “switching valve” is attached to the faucet of the water supply, and an outgoing pipe and a return pipe to the water purifier are attached to this switching valve, and tap water is sent to the water purifier through this switching valve to obtain purified water. It returns to the switching valve side and discharges from this switching valve.
[0004]
As such a switching valve, there is a “switching valve” as disclosed in Patent Document 1, for example.
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-44370, claim 5, FIG.
[0006]
[Problems to be solved by the invention]
In the “switching valve” described in Patent Document 1, from the description of FIG. 9 and Claim 5 of the document,
“In the switching valve according to claim 4, in a state where the rotary valve is maintained in the clean water straight discharge mode, the raw water inlet and the first valve hole communicate with each other, the second valve hole is closed, When the two-valve chamber communicates with the first discharge port, the spherical valve body is held in a state in which the second discharge port is closed, and the rotary valve is rotated by a predetermined angle to switch to the clean water shower discharge mode, The two valve holes communicate with the raw water introduction port, the first valve hole is closed, the first discharge port is closed by the first valve portion, the spherical valve body is lifted by the valve operating body, and the second discharge port is opened. When the rotary valve is rotated by a predetermined angle and switched to the raw water shower discharge mode, both the first and second valve holes are closed, and the first discharge port is closed by the first valve portion. The spherical valve body is held in the floating position by the valve operating body, and the raw water passage When the introduction port and the second valve chamber communicate with each other, the second valve portion holds the second opening closed, and the rotation valve is rotated by a predetermined angle and switched to the backwash straight mode, When the valve operating body is separated from the spherical valve body, the second discharge port is closed by the spherical valve body, the first valve hole is communicated with the first discharge port, the second valve hole is held in the closed position, and the raw water passage is It is communicated with the raw water inlet, and is configured so that the second opening by the second valve portion is released. "
It is possible to switch the fluid to at least four types of discharge modes, simplify the structure and reduce the number of parts, facilitate manufacturing and assembly work, and reduce costs, In addition to the effect that the switching operation can be easily performed with one touch, the rotation valve mechanism is composed of the rotation valve and the spherical valve body, so that the mechanism can be simplified. It is done.
[0007]
However, in the “switching valve” of Patent Document 1, the raw water inlet 21b communicates with the first valve hole 25e or the second valve hole 25f in the “purified straight discharge mode” and the “purified shower discharge mode”. However, both the first valve hole 25e and the second valve hole 25f are closed in the “raw water shower discharge mode”. For this reason, there may be a time when raw water or purified water remains in the first valve chamber R1 or the second valve chamber R2.
[0008]
This kind of water purifier switching valve has no problem when a certain amount is used every day, but if it is not used for several days during travel etc., germs in the air may propagate inside. is there. This breeding of germs is more likely to occur if there is accumulated water in the switching valve. When the switching valve is used next time, a “bad smell” may occur.
[0009]
Even if it is used every day, it does not mean that clean water is used all the time, so it is separate from the raw water passage, as in the “switching valve” described in Patent Document 1. If there is a clean water channel that is not used, air germs may remain attached to the water channel, and the breeding conditions of the germs may be satisfied little by little.
[0010]
Therefore, the present inventors have conducted various studies on the switching valve for this kind of water purifier in order to suppress the propagation of germs. As a result, the raw water (tap water) was originally disinfected. I found that the raw water itself can act as a disinfectant.
[0011]
That is, the object of the present invention is to sterilize the common passage when raw water is passed by making the part through which purified water passes and the part through which raw water passes through as long as possible. It is providing the switching valve for water purifiers which can discharge the purified water which does not exist always by simple structure.
[0012]
[Means for Solving the Problems]
In order to solve the above problems, first, the means taken by the invention according to claim 1 will be described with reference numerals used in the description of the implementation state described below.
“Attached to the faucet 30 of the water supply, the supplied raw water is sent directly to the spout 17 or to the water purifier 20 outside the apparatus, and the purified water circulated from the water purifier 20 or the directly supplied raw water is discharged. The switching valve 10 is configured to discharge from the water port 17,
A water outlet 11b that feeds raw water into the water purifier 20, a water purification port 11c into which purified water from the water purifier 20 flows, and these water purifiers, in a substantially central portion of the valve body 11 constituting the switching valve 10. 11c and the raw water outlet 11a located between the outlet 11b form a switching chamber R1 that is opened, and the raw water outlet 11a is not blocked by the external switching handle 12b in the switching chamber R1 without being closed. The switching valve body 12 that is moved between the water port 11c and that contacts the first valve seat 14a formed between the raw water port 11a and the water purification port 11c in the switching chamber R1 is disposed,
The switching valve body 12 is attached to the inner end of the valve shaft 12a advanced / retracted by the switching handle 12b, and the valve shaft 12a is fixedly inserted into the switching chamber R1, and the raw water inlet 11a, the outlet 12b, Is pivotally supported at the center of the support cylinder 13 that forms the second valve seat 14b located between and the communication chamber R3 communicating with the raw water port 11a,
Furthermore, the switching valve 10 for the water purifier is characterized in that a distribution chamber R2 communicating with the switching chamber R1 through the water passage 11b is formed in the lower part of the valve body 11.
It is.
[0013]
That is, the switching valve 10 according to claim 1 is configured such that when raw water is used without using purified water, most of the internal passage is brought into contact with the raw water. By using this, most of the internal passages can be sterilized without fail when using raw water.
[0014]
Therefore, in this switching valve 10, as shown in FIG. 3, a switching chamber R1 is formed at a substantially central portion of the raw water port 11a, and the raw water flowing from the tap 30 into the switching chamber R1. 3 for the raw water inlet 11a, the outlet 11b to be connected to the outgoing pipe 21 of the water purifier 20 formed on the lower right side of the raw water inlet 11a in FIG. 3, and the raw water inlet 11a in FIG. A water purification port 11c that is formed on the lower left side of the figure and is to be connected to the return pipe 22 of the water purifier 20 is opened, and the switching chamber R1 is communicated with the lower distribution chamber R2 at the bottom of the switching chamber R1. For this purpose, a water inlet 11d is opened.
[0015]
And in this switching chamber R1, the switching valve body 12 which moves between the delivery port 11b and the water purification port 11c is arrange | positioned, without blocking the said raw | natural water port 11a, This switching valve body 12 is 3 is moved forward and backward with respect to the switching chamber R1 by the rotation of the switching handle 12b protruding rightward in the drawing in FIG. Of course, the switching valve body 12 is liquid-tightly supported in the switching chamber R1 through the support cylinder 13, and the switching cylinder body 12 is in the switching cylinder R1 when the switching valve body 12 is separated in the support cylinder 13. A communication chamber R3 communicating with the communication chamber R3 is formed. The inner end of the support cylinder 13 in the switching chamber R1 is formed with a second valve seat 14b that contacts the switching valve body 12 and seals the communication chamber R3. What is the second valve seat 14b? A first valve seat 14a that is opened and closed by the switching valve body 12 is formed in the switching chamber R1 on the opposite side and between the raw water port 11a and the purified water port 11c.
[0016]
In the switching valve 10 of the first aspect configured as described above, the purified water discharge and the raw water discharge are switched as follows, but each case will be described separately.
(Raw water discharge)
First, the switching handle 12b from which the switching valve 10 protrudes to the side is rotated so that the internal switching valve body 12 is in the position shown in FIG. Then, the handle 31 of the faucet 30 is turned to introduce tap water into the switching valve 10.
[0017]
As shown in FIG. 3, since the switching valve body 12 is in contact with the second valve seat 14b at the inner end of the support cylinder 13, the communication chamber R3 is in a closed state, and the raw water is in the communication chamber R3, that is, It does not flow to the water purifier 20 side. On the other hand, since the switching valve body 12 is away from the first valve seat 14a, the raw water flows into the switching chamber R1 from the raw water port 11a and is formed at the bottom of the switching chamber R1. It flows into the distribution chamber R2 below from the water flow port 11d.
[0018]
At this time, since the water purifying port 11c connected to the return pipe 22 of the water purifier 20 remains open in the switching chamber R1, the raw water flowing into the switching chamber R1 passes through the water purifying port 11c. Trying to enter the water purifier 20. However, in general, the water purifier 20 is provided with a valve (a backflow prevention valve) for preventing the backflow of the purified water (raw water) from the water purification port 11c, that is, the return pipe 22, and the distribution chamber R2 Since the water is in communication with the outside through the water discharge port 17 or the shower port 17a, the raw water flows back to the water purification port 11c only by being discharged from the water discharge port 17 or the shower port 17a to the outside even if the raw water is under pressure. There is no going on.
[0019]
In the case of this raw water discharge, the raw water enters the switching chamber R1 from the raw water port 11a, flows in the left portion of the switching chamber R1 shown in FIG. 3 and flows in the distribution chamber R2 through the water flow port 11d. . Of course, since the communication chamber R3 is closed by the switching valve body 12, germs are contained in the communication chamber R3 and in the outlet 11b communicating with the communication chamber R3 via the communication hole 13a and the annular communication hole 13b. The air that comes out does not enter.
[0020]
In other words, the raw water that has flowed from the third valve seat 14c through the raw water port 11a flows in the most part of the surface of the switching valve body 12, the left half of the switching chamber R1, and the distribution chamber R2 while washing. It goes.
[0021]
(Purified water discharge)
When it is desired to discharge purified water from the water discharge port 17 or the shower port 17a through the switching valve 10, the switching handle 12b is operated so that the switching valve body 12 closes the first valve seat 14a. This state is shown in FIG.
[0022]
As described above, the raw water that has flowed in through the raw water inlet 11a enters the communication chamber R3 through the right side portion of the switching valve body 12 as shown in FIG. 5, and is closed in this communication chamber R3. It flows into the outlet 11b through the communication hole 13a and the annular communication hole 13b. Since the water purifier 20 is connected to the outlet 11b via the outgoing pipe 21 connected to the outgoing pipe connecting portion 19a, the raw water flows into the water purifier 20.
[0023]
The raw water purified in the water purifier 20 then flows into the water purification port 11c side via the return pipe 22, and flows back to the raw water port 11a side by the switching valve body 12 with the first valve seat 14a closed. Instead, it flows into the lower distribution chamber R2 through the water inlet 11d. As described above, since the distribution chamber R2 is opened to the outside through the water discharge port 17 or the shower port 17a, the purified water is discharged from the water discharge port 17 or the shower port 17a. .
[0024]
The flow of the purified water described above is the flow of the raw water described above except for the inflow from the communication chamber R3 into the water purifier 20 through the outgoing pipe 21 and from the water purifier 20 through the return pipe 22 into the water purifier 11c. It is almost the same as the part. In other words, the raw water to be purified and the portion of the purified water purified by the water purifier 20 up to the water inlet 11d were completely sealed without contact with air, and the purified water passage flowing through the switching valve 10 was Since it is almost the same as the passage disinfected by the raw water described above, there is no room for propagation of various germs.
[0025]
Therefore, the switching valve 10 of this Claim 1 can be made into the state by which the part through which the purified water which was made with the water purifier 20 flows was always washed with the raw | natural water containing chlorine, and does not use the water purifier 20 for a long period of time. Even then, the purified water produced using the water purifier 20 can be literally purified, and does not generate odors caused by various germs from the purified water that has been produced after a long time. is there.
[0026]
In order to solve the above-mentioned problem, the means taken by the invention according to claim 2 is related to the switching valve 10 according to claim 1.
“In the distribution chamber R2 formed in the lower part of the valve body 11, a water discharge tube 16 whose inside is a through hole 16a and whose lower end is a water discharge port 17 is assembled in a vertically movable manner, and this water discharge tube 16 is passed through the center. Three valve seats 14c are arranged, and an annular valve body 15 that abuts against the ceiling of the distribution chamber R3 or the third valve seat 14c is provided at the upper end of the water discharge pipe 16,
Depending on the position of the annular valve body 15, purified water or raw water was not discharged as water discharge or shower water. "
It is.
[0027]
That is, the switching valve 10 according to claim 2 can discharge raw water or purified water from the water discharge port 17 or the shower port 17a while following the operation and function of the above-mentioned claim 1 as it is. is there.
[0028]
In the switching valve 10 of the second aspect, as shown in FIG. 3, a water discharge cylinder 16 that is moved up and down by the rotation of the switching lever 16b is housed in a distribution chamber R2 formed in the lower part of the valve body 11. The annular valve body 15 is attached to the upper end of the water discharge cylinder 16, and when the water discharge cylinder 16 is moved up so that the annular valve body 15 contacts the ceiling of the distribution chamber R2 (FIG. 3). The through hole 16a of the water discharge tube 16 is closed.
[0029]
Further, in this switching valve 10, a third valve seat 14c is provided at the center in the distribution chamber R2, and when the water discharge cylinder 16 is moved downward by the rotation of the switching lever 16b, the annular valve provided at the upper end thereof is provided. The valve body 15 closes the third valve seat 14c. In the switching valve 10 shown in FIG. 8, a shower port 17a is formed in the lower nut 18 for forming the distribution chamber R2, and the lower end of the water discharge tube 16 is opened as the water discharge port 17. It is.
[0030]
The switching valve 10 according to claim 2 discharges raw water or purified water sent from the upper switching chamber R1 through the water flow port 11d from the water discharge port 17 or the shower port 17a. The explanation will be divided into normal water discharge.
(Shower water)
This shower water discharge is performed with the water discharge tube 16 and the annular valve body 15 in the state shown in FIG. 3, and the purified water or raw water flowing into the distribution chamber R2 from the water inlet 11d is the third valve seat 14c. The water flows directly toward each shower port 17a through a gap between the water discharge tube 16 and water is discharged from the shower port 17a as a shower.
[0031]
At this time, as shown in FIG. 3, the annular valve body 15 provided at the upper end of the water discharge tube 16 is in contact with the ceiling of the distribution chamber R <b> 2 and closes the through hole 16 a in the water discharge tube 16. Therefore, the purified water or raw water that has flowed into the distribution chamber R2 from the water inlet 11d does not enter the through hole 16a of the water discharge tube 16, and therefore water is not discharged from the water outlet 17.
(Normal water discharge)
This normal water discharge is performed by moving the water discharge tube 16 downward from the position shown in FIG. 3 to the position shown in FIG. 4 by rotating the switching lever 16b. That is, when the water discharge tube 16 is moved downward, the annular valve body 15 provided at the upper end of the water discharge tube 16 is separated from the ceiling of the distribution chamber R2, and is brought into contact with the third valve seat 14c and the third valve seat 14c. The gap is closed with the water discharge tube 16.
[0032]
As a result, the inside of the distribution chamber R2 communicates with the through hole 16a of the water discharge tube 16 whose upper end is opened, and the raw water or purified water that has flowed into the distribution chamber R2 from above through the water flow port 11d is discharged from the water discharge tube. The water is normally discharged from the water outlet 17 at the lower end through the 16 through holes 16a.
[0033]
In the example shown in FIGS. 3 and 4, the water discharge cylinder 16 is moved up and down by the switching lever 16b. However, the water discharge cylinder 16 is provided on the lower nut 18 as shown in FIG. Alternatively, the switching lever 16b may be moved up and down by screwing the lower nut 18 or screwing it back.
[0034]
Therefore, the switching valve 10 of claim 2 can perform the same function as that of claim 1 and can perform shower water discharge and normal water discharge with a simple structure.
[0035]
DETAILED DESCRIPTION OF THE INVENTION
Next, the invention of each claim configured as described above will be described with respect to the switching valve 10 which is the embodiment shown in the drawings. The switching valve 10 of this embodiment is the whole of the invention according to each of the above claims. Is included.
[0036]
FIG. 1 shows a state in which the switching valve 10 according to the present invention is used. This switching valve 10 is attached to the faucet 30 and is formed in the valve main body 11. As shown in FIGS. 6 and 7, the outgoing pipe 21 and the return pipe 22 of the water purifier 20 are connected to the part 19 a and the return pipe connection part 19 b, respectively. In other words, the switching valve 10 switches whether tap water (raw water) is directly discharged or whether raw water is sent to the water purifier 20 side and the purified water generated by the water purifier 20 is discharged. It does not have a water function, and this water stop function is left to the operation by the handle 31 of the faucet 30.
[0037]
As shown in FIG. 2, the switching valve 10 has an upper nut 11e above the valve body 11, and the switching valve 10 is attached to the faucet 30 by the upper nut 11e. is there. Further, a switching handle 12b for allowing the switching operation by the internal switching valve body 12 to be performed from the outside is projected from the right portion of the valve body 11 in the figure, and the switching operation is performed by the switching handle 12b. The subsequent raw water or purified water is discharged from the lower surface of the lower nut 18 provided at the lower end of the valve body 11. Further, as shown in FIGS. 2, 6, and 7, the outer pipe 21 or the return pipe 22 on the water purifier 20 side is connected to the back surface of the valve body 11 constituting the switching valve 10. The outgoing pipe connecting portion 19a and the returning pipe connecting portion 19b to be formed are formed as described above.
[0038]
In addition, although the water discharge pipe | tube 16 mentioned later arrange | positioned in the distribution chamber R2 in the valve | bulb main body 11 is moved up and down in this distribution chamber R2, the vertical movement operation was directly connected to the water discharge pipe | tube 16. When the switching lever 16b is used (as shown in FIGS. 3 to 7), and when the water discharge pipe 16 is directly attached to the lower nut 18 and the lower nut 18 is screwed and screwed (shown in FIG. 8). Case) and two types.
[0039]
In the valve body 11 constituting the switching valve 10, as shown in FIG. 3, a switching chamber R1 in which four holes of a raw water port 11a, a delivery port 11b, a water purification port 11c, and a water flow port 11d are formed is formed. It is. The raw water port 11a introduces the raw water from the faucet 30 into the switching chamber R1, and the water flow port 11d distributes the raw water or purified water in the switching chamber R1 in the lower part of the valve body 11. It is derived in the inside. The delivery port 11b in the switching chamber R1 sends the raw water from the communication chamber R3 in the support cylinder 13 inserted in the switching chamber R1 through the communication hole 13a and the annular communication hole 13b in the support cylinder 13 to the outgoing pipe. The water purification port 11c introduces the purified water sent through the return pipe connecting part 19b into the switching chamber R1.
[0040]
As shown in FIGS. 3 and 5, the switching valve body 12 is arranged in the switching chamber R1 in which these water purification ports 11c and the like are opened. The switching valve body 12 is connected to the delivery port 11b. And the water purification port 11c, and is always in a position where the raw water port 11a is not blocked. Moreover, when this switching valve body 12 contact | abuts to the 1st valve seat 14a currently formed in the switching chamber R1, the inside of the switching chamber R1 is made into two chambers, the delivery port 11b side and the water purification port 11c side. It will be partitioned. Of course, the switching valve body 12 has a valve shaft 12a, and the valve shaft 12a is liquid-tightly inserted and fixed to the right portion of the switching chamber R1 in FIG. On the other hand, it is advanced and retracted by the aforementioned switching handle 12b at the outer end.
[0041]
As shown in FIG. 3, the support cylinder 13 that supports the switching valve body 12 with the valve shaft 12a substantially at the center thereof has an end on the switching valve body 12 side as a second valve seat 14b. There is also a communication chamber R3 formed between the valve shaft 12a. The communication chamber R3 communicates with the aforementioned outlet 11b through a communication hole 13a and an annular communication hole 13b formed in the support cylinder 13.
[0042]
The distribution chamber R2 formed in the lower part of the valve body 11 is always in communication with the switching chamber R1 side through the water flow port 11d described above, and this distribution chamber R2 is a lower part attached to the lower end of the valve body 11. Closed by nut 18. In the embodiment shown in FIG. 3, the water discharge pipe 16 whose center is a through hole 16a is assembled to the lower nut 18 so as to be movable in the vertical direction. The vertical movement operation of the water discharge tube 16 is performed by a switching lever 16 b attached to the lower end of the water discharge tube 16. On the other hand, in the embodiment shown in FIG. 8, the water discharge tube 16 is fixedly fixed to the lower nut 18 by a nut stopper 18a, and the vertical movement of the water discharge tube 16 causes the lower nut 18 itself to move to the valve body 11. Is carried out by screwing and unscrewing.
[0043]
As shown in FIGS. 3 and 4, the upper end of the water discharge pipe 16 as described above comes into contact with the ceiling of the distribution chamber R2 when raised to the top dead center, and when lowered to the bottom dead center, the distribution chamber. An annular valve body 15 to be applied is attached to a third valve seat 14c provided in R2. That is, the annular valve body 15 moves up and down together with the water discharge cylinder 16, and performs switching so that the purified water or the raw water introduced into the distribution chamber R2 through the water outlet 11d is discharged into the shower or is normally discharged. It is.
[0044]
For this reason, in the embodiment shown in FIGS. 3 and 4, a plurality of shower openings 17a are formed around the lower nut 18 as shown in FIG. A water outlet 17, that is, a through hole 16 a of the water discharge cylinder 16 is opened at the center of the mouth 17 a. On the other hand, in the embodiment shown in FIG. 8, each shower port 17 a is formed in the same manner, and the lower end portion of the water discharge pipe 16 protruding downward from the lower nut 18 is fixed to the lower nut 18 by the nut stopper 18 a, The lower end of the through hole 16 a of the water discharge tube 16 is opened as the water discharge port 17.
[0045]
【The invention's effect】
As described above in detail, in the present invention, as illustrated in the above embodiment,
That is, the object of the present invention is as follows.
[0046]
[Means for Solving the Problems]
In order to solve the above problems, first, the means taken by the invention according to claim 1 will be described with reference numerals used in the description of the implementation state described below.
“Attached to the faucet 30 of the water supply, the supplied raw water is sent directly to the water outlet 17 or to the water purifier 20 outside the apparatus, and the purified water circulated from the water purifier 20 or the directly supplied raw water is discharged. The switching valve 10 is configured to discharge from the water port 17,
A water outlet 11b that feeds raw water into the water purifier 20, a water purification port 11c into which purified water from the water purifier 20 flows, and these water purifiers, in a substantially central portion of the valve body 11 constituting the switching valve 10. 11c and the raw water outlet 11a located between the outlet 11b form a switching chamber R1 that opens, and the raw water outlet 11a is not blocked by the external switching handle 12b in the switching chamber R1 without being closed. The switching valve body 12 that is moved between the water port 11c and that contacts the first valve seat 14a formed between the raw water port 11a and the water purification port 11c in the switching chamber R1 is disposed,
The switching valve body 12 is attached to the inner end of the valve shaft 12a advanced / retracted by the switching handle 12b, and the valve shaft 12a is fixedly inserted into the switching chamber R1, and the raw water inlet 11a, the outlet 12b, Is pivotally supported at the center of the support cylinder 13 that forms the second valve seat 14b located between and the communication chamber R3 communicating with the raw water port 11a,
Furthermore, a distribution chamber R2 communicating with the switching chamber R1 via the water flow port 11b is formed at the lower part of the valve body 11. "
There is a main feature in the structure, and by this, the passage through which the purified water and the portion through which the raw water passes are made as long as possible to sterilize this common passage when passing through the raw water, Therefore, it is possible to provide the switching valve 10 for the water purifier that can always discharge the purified water in which there is almost no water, with a simple structure.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which a water purifier 20 and a faucet 30 are connected via a switching valve 10 according to the present invention.
FIG. 2 is an enlarged perspective view of the switching valve.
FIG. 3 is a longitudinal sectional view taken along line 1-1 in FIG.
4 is a longitudinal sectional view taken along line 2-2 in FIG.
5 is a cross-sectional view taken along line 3-3 in FIG.
FIG. 6 is a plan view of the switching valve.
FIG. 7 is a bottom view of the same.
FIG. 8 is a longitudinal sectional view showing another embodiment of the switching valve.
FIG. 9 is a longitudinal sectional view of a switching valve showing a conventional technique.
[Explanation of symbols]
10 Switching valve
11 Valve body
11a Haramizuguchi
11b Outlet
11c water purifier
11d water outlet
11e Upper nut
12 Switching valve body
12a Valve stem
12b Switching handle
13 Support tube
13a Communication hole
13b Annular communication hole
14a 1st valve seat
14b Second valve seat
14c 3rd valve seat
15 Annular disc
16 Water bottle
16a Through hole
16b switching lever
17 Spout
17a Shower mouth
18 Lower nut
18a Nut stopper
19a Outgoing pipe connection
19b Return pipe connection
20 Water purifier
21 Outbound
22 Return pipe
30 faucet
31 Handle

Claims (2)

Attached to the faucet of the water supply, the supplied raw water is sent directly to the water outlet or to the water purifier outside the apparatus, and the purified water circulating from the water purifier or the directly supplied raw water is discharged from the water outlet. A switching valve,
In the substantially central part of the valve body constituting this switching valve, the outlet for sending the raw water to the water purifier, the water purification inlet for the purified water from the water purifier, and the water purification outlet and the outlet A switching chamber is formed in which the raw water port located between the two is formed, and the raw water port is moved between the outlet and the raw water port without being blocked by an external switching handle in the switching chamber, and A switching valve body that contacts the first valve seat formed between the raw water inlet and the water purification outlet in the switching chamber is disposed,
The switching valve body is attached to the inner end of the valve shaft that is advanced and retracted by the switching handle, and the valve shaft is fixedly inserted into the switching chamber and positioned between the raw water inlet and the outlet. Pivotally supported at the center of the support cylinder forming the second valve seat and the communication chamber communicating with the raw water inlet,
Furthermore, the switching valve for water purifiers which formed the distribution chamber which connects the said switching chamber via a water flow port in the lower part of the said valve main body. In the distribution chamber formed in the lower part of the valve main body, a water discharge tube having a through hole inside and a lower end serving as the water discharge port is assembled so as to be movable up and down, and a third valve seat passing through the water discharge tube is disposed. An annular valve body that contacts the ceiling of the distribution chamber or the third valve seat is provided at the upper end of the water discharge tube,
The switching valve for a water purifier according to claim 1, wherein the purified water or the raw water is not discharged as discharged water or shower water depending on the position of the annular valve body.

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