JPH09242901A - Cock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To change over a vessel in the upstream and a vessel in the downstream which are provided in a liquid pipe and use them, control flow-in and flow-out of these vessels by one cock, and prevent excessive pressure from being applied on the vessels. SOLUTION: A cock has a first cock part 3a and a second cock part 3b. Two communicating holes 41, 42 are formed for a pair of flow-in and flow-out ports 31, 32 in the first cock part 3a. An open and close part which is communicated from a flow-in port 33 to a flow-out port 36 in correspondence to the communicating hole 42 in the first cock part and an open and close part of which liquid passes the flow-in port 33 and the other flow-out part and refluxes into the flow-out port 36 again in correspondence to the communicating hole 41 in the first cock part 3a are provided in the second cock part 3b. Timing of opening and closing of the first cock part 3a is slightly deviated from timing of opening and closing of the second cock part 3b to prevent excessive fluid pressure from being applied on each vessel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a case where a container for treating a liquid is connected to a liquid pipe in which the liquid flows at a predetermined pressure, such as a water purifier installed in a faucet portion of a water pipe. , A cock for simultaneously controlling the inflow and outflow of liquid into the container.

[0002]

2. Description of the Related Art For example, inflow and outflow of water into a water purifier connected to a faucet part of a water supply is controlled simultaneously by a faucet-side cock. With this configuration, if a cock is provided at the water supply section connected to the outlet side of the water purifier and the inflow and outflow to the water purifier are controlled by this cock, the water purifier with a larger cross-sectional volume than the pipe will be excessive. This is because if pressure is applied and the structure of the water purifier is not solid, the water purifier will be damaged or rapidly deteriorate.

[0003]

However, like a water purifier, a container for purifying the liquid flowing through the liquid pipe is installed, and a cock installed upstream of the container allows the inflow and outflow to and from the container in parallel. Then, there are the following problems. That is, by stopping the inflow and outflow to the container, when the pressure of the liquid flowing through the pipe on the downstream side of the container disappears, miscellaneous bacteria in the downstream pipe easily move and propagate in the container. That is. In order to solve such a problem and prevent the excessive pressure from being applied to the container when the outflow from the container is stopped, cocks are installed on the upstream side and the downstream side of the container in the pipe, respectively. When stopping the flow of liquid, close the upstream cock and then close the downstream cock, and when starting the flow of liquid, open the downstream cock and then open the upstream cock. You can operate it.

However, as described above, it is complicated to separately operate the cock provided on the downstream side of the container in the pipe and the cock provided on the upstream side of the container, and the operation sequence may be wrong. Therefore, the structure of the container must be strong enough for safety. An object of the present invention is to control the inflow and the outflow from the container installed in the liquid pipe as described above separately so that an excessive pressure of the internal fluid is not applied to the container. The purpose of the present invention is to provide a cock that can control both of them with good timing with one cock. Another object of the present invention is to provide two containers in the liquid pipe in order along the flow direction, and to use the upstream side container and the downstream side container in parallel, and only the upstream side container. The purpose of the present invention is to provide a cock which can be selectively switched by one cock when used.

[0005]

The cock according to the present invention is constructed as follows in order to solve the above-mentioned problems. That is, in the cock according to claim 1, the plug 2 is inserted into the main body 1 in a state where it is liquid-tightly rotated within a predetermined angle range, and the first circulation hole 21 formed in the plug 2 allows First inflow port 1 formed in the main body 1
1 and the first outflow port 12 are opened to the first cock portion 1
1a and the second flow hole 22 formed in the plug 2 cause the second inlet 13 and the second inlet 13 formed in the main body 1
A second cock portion 1b which is opened to the outlet 14 of the first cock portion 1a and the second cock portion 1b are opened and closed in parallel by the operation of the plug 2, and It is characterized in that it is configured as the following first or second. The first is that the second inflow port 13 or the second outflow port 14 and the second flow hole 22 in the second cock part 1b are the first inflow port in the first cock part 1a. 11 and the first outlet 12 start to open slightly earlier than they start to open, and close slightly later than the first inlet 11 and the first outlet 12 start to close. In the starting state, they are formed so that they are slightly displaced from each other. The second is the first cock portion 1a.
In the first inflow port 11 or the first outflow port 12 and the first circulation hole 21 in, the second inflow port 13 and the second outflow port 14 in the second cock portion 1b are opened. By opening the second opening 13 and the second opening 14 slightly later than the start of opening and slightly closing the openings of the second inlet 13 and the second outlet 14, the openings are slightly offset from each other. is there.

According to the second aspect of the invention, the plug 4 is inserted into the main body 3 in a liquid-tight manner and rotates within a predetermined angle range, and the first cock portion 3a and the second cock portion 3b are connected to each other. The first cock portion 3a includes a first inflow port 31 and a first outflow port 32 formed in the body 3 when the plug 4 is rotated in one direction by a predetermined angle. When the plug 4 is opened by the first flow hole 41 formed in the plug 4 and the plug 4 is rotated in the other direction by a predetermined angle,
The first inflow port 31 and the first outflow port 32 are configured to be opened by a second flow hole 42 formed in the plug 4, and the second cock portion 3b is the plug. When the body 4 is rotated in one direction by a predetermined angle, the body 3
The second inflow port 33 and the second outflow port 34 respectively formed in the plug 4 communicate with the third circulation hole 43 formed in the plug 4 and the fourth communication hole 44.
And a third inflow port 35 and a third outflow port 36 respectively formed in the main body 3 while being opened by
When the plug 4 is opened by the fifth through hole 45 formed in the plug 4 and the plug 4 is rotated in the other direction by a predetermined angle, the second inflow port 33 and the third outflow port 36 are connected to each other. The first cock portion 1a and the second cock portion are configured to be opened by the four circulation holes 44, and are characterized in that they are configured as the following first or second. The first is the third inflow port 35 or the third outflow port 36 and the fifth circulation hole 45 in the second cock part 3b, and the second inflow port 33 or the third outflow port 36. And the fourth circulation hole 44 correspond to the first cock portion 3
The first inflow port 31 and the first outflow port 32 in a begin to open slightly earlier than the opening, and the first inflow port 31 and the first outflow port 32 start to close. It is formed slightly offset from each other so that it begins to close slightly later than. Secondly, the first inflow port 31 or the first outflow port 32 and the first flow hole 41 in the first cock part 3a are the third inflow port in the second cock part 3b. 35 and the third outlet 36 start opening slightly later than the opening,
Of the first inflow port 31 and the third outflow port 36 of the first cock portion 3a are slightly displaced from each other in a state in which they start to close slightly earlier than the start of closing. Alternatively, the first outlet 32 and the second flow hole 42 are opened slightly later than the second inlet 33 and the third outlet 36 in the second cock portion 3b start opening. Then, the second inflow port 33 and the third outflow port 36 are formed so as to be slightly displaced from each other in a state in which they start to close slightly before they start to close.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a cock according to the present invention will be described with reference to the drawings. 1st Embodiment (corresponding to the invention of claim 1) FIG. 1 is a cross-sectional view showing a state in which the cock of the first embodiment is connected to a container (water purifier) installed at a tap part of water supply, and FIG. It is a schematic sectional drawing which shows the relationship between the water-passage hole of 2 and other water-passage parts.

Reference numeral 1 is a main body in which an insertion portion 10 is formed,
The insertion portion 10 of the main body 1 has a handle 20 at one end.
Is inserted so as to rotate in a liquid tight manner within a predetermined angle range. The plug 2 is appropriately braked so as not to rotate freely by appropriately screwing the nut 24 to the male screw portion 23 at the end protruding from the main body 1 via a spring washer (not shown).

The main body 1 and the plug 2 are provided with a first cock portion 1a for controlling inflow into a container 5 (water purifier) connected to a faucet of a water pipe (not shown), and an outflow from the container 5 is controlled. The second cock portion 1b is formed.

Each of the first cock portions 1a has an insertion portion 1
It is provided with a first inlet 11 and a first outlet 12 formed in a part of the main body 1 so as to reach the outer periphery from 0, and a first flow hole 21 formed in the plug 2. . First
The inflow port 11 and the first outflow port 12 are opened by the communication hole 21 when the plug 2 is rotated 90 degrees counterclockwise from the closed position of the cock portion 1a, and the plug 2 is moved clockwise 90 °. It is designed to close when rotated.

The second cock portion 1b has a second inflow port 13 and a second outflow port 14 formed in other parts of the main body 1, and a second flow hole 22 formed in the plug 2. It has and. The second inflow port 13 and the second outflow port 14 are
The first inlet 11 and the first outlet 12 are communication holes 2
When it is opened by 1, the above-mentioned second
Is opened by the communication hole 22 and is closed at substantially the same time when the first inlet 11 and the outlet 12 are closed. O-rings 25, 26 and 27 are provided at required portions of the contact portion between the main body 1 and the plug 2 in order to seal the water passage portions of the first cock portion 1a and the second cock portion 1b.
Is interposed.

The first inflow part 11 is connected to a faucet of a water pipe (not shown) by a pipe (not shown), and the first outflow part 12 is connected to the inflow part 50 of the container 5 via a packing 15. The second inflow portion communicates with the outflow portion 51 of the container 5 via the packing 16, and the second outflow portion 22 communicates with a water supply pipe (not shown).

FIG. 1 shows a first inflow port 11 and an outflow port 12,
And the 2nd inflow part 13 and the 2nd outflow part 14 are opened, respectively, and tap water flows in into the container 5 via the 1st cock part 1a, and after being purified, via the 2nd cock part 1b. It shows the state of flowing into the water supply pipe. In this state,
As shown in, the first inflow / outlet 11, 12, the first water passage hole 21, and the second inflow / outflow port 13, 14 are vertically aligned in the vertical direction in FIG. The water passage hole 22 of the second cock portion 1b is formed so as to be slanted by a slight angle θ along the rotation direction of the plug 2 when the cock is opened. As a result, the second inlet 13
And the outlet 14 are closed slightly later than the first inlet 11 and the outlet 12 when the plug 2 is rotated in the closing direction of the cocks 1a and 1b, while the plug 2 is closed.
When rotating in the opening direction of a and 1b, the inlet 11
And it is opened slightly earlier than the outlet 12.

As described above, according to the cock of this embodiment, when the cock is operated in the opening direction, the outflow side of the container 5 is opened slightly earlier than the inflow side, and when the cock is operated in the reverse direction. , The outlet side of the container is closed slightly later than the inlet side, so that no excessive water pressure is applied to the container 5. Therefore, the container 5 does not need to be manufactured to have a strong structure, and thus can be manufactured at a lower cost. Moreover, since the above-described operation can be performed by one cock, there is no mistake in the operation sequence of the inflow into the container 5 and the outflow from the container 5.

Modification of the Cock of the First Embodiment In the first embodiment, the inflow / outflow port 1 on the side of the first cock 1a
The entrances and exits 13 and 14 of the second cock portion 1b start to open slightly earlier than the openings 1 and 12 start to open, and the latter starts to close slightly later than the former starts to close,
Although the flow hole 22 on the second cock portion 1b side is formed slightly displaced, the same effect can be obtained even if the following configuration is adopted instead of such a configuration. The first is to form the inflow port 13 and / or the outflow port 14 on the side of the second cock portion 1b or both of them so as to be slightly displaced so that the cock operates as described above. Secondly, the flow hole 21 on the side of the first cock portion 1a is formed with a slight shift so that the cock operates as described above. The third
Is to form the inflow port 11 and / or the outflow port 12 on the side of the first cock portion 1a with a slight offset so that the cock operates as described above.

Second Embodiment (corresponding to the cook according to claim 2) FIGS. 3 to 6 show a second embodiment of the cook according to the present invention. 6 is a partially cutaway front view showing a state in which the cock is connected to a container (water purifier) installed along the flow direction in the liquid pipe, FIG. 4 is an enlarged sectional view of the cock, and FIG. 5 is an arrow A- in FIG. 6 is a sectional view for explaining the action of the cock, (a) is a sectional view taken along the arrow BB in FIG. 5, (b) is a sectional view taken along the arrow CC in FIG. 5 is a sectional view taken along line (c) of FIG. 5, which is a sectional view taken along arrow D-D of FIG.
The figure is a sectional view of the state in which the plug is rotated counterclockwise from the state of FIG.

Reference numeral 3 denotes a main body composed of an exterior tubular body 3c and a sleeve 3d inserted and fixed in the exterior tubular body 3c. Inside the sleeve 3d of the main body 3, a plug 4 having a handle 40 at one end is provided. It is inserted so as to be liquid-tight and to rotate within a predetermined angle range. The plug 4 is appropriately braked so as not to rotate freely by appropriately screwing the nut 46a to the male screw portion 46 at the end protruding from the main body 1 via the spring washer 46b.

The main body 3 and the plug 4 are provided with a first cock portion 3a for controlling inflow into a first container 6 (water purifier) connected to a faucet (not shown) of a water pipe, and a first container 6 From the water supply side to the water supply side, the outflow from the container 6 is controlled to be switched between the water supply side and the second container 7 side, and the second cock portion 3b for controlling the outflow from the container 7 is formed. Has been done.

As shown in FIGS. 4 to 6, the first cock portion 3a has a first inflow port 31 and a first inflow port 31 formed in a part of the main body 3 so as to reach the outer circumference from the inner circumference. First outlet 32 and the first flow hole 4 formed in the plug 4.
The first and second circulation holes 42 are provided. First inlet 3
1 and the first outlet 32 are selectively opened by the first communication hole 41 and the second communication hole by rotating the plug 4 in the forward and reverse directions by 90 degrees, and the opened state thereof. Is configured to be closed when the plug 4 is rotated 45 degrees in one direction.

The second cock portion 3b has a second inflow port 33, a second outflow port 34, a third inflow port 35 and a third outflow port 36 formed in other parts of the main body 3. Third communication hole 43 formed in the plug 4 and the communication hole 4
Fourth communication hole 44 communicating with 3 and fifth communication hole 45
And In the second cock portion 3b, the inflow / outflow ports 31 and 32 of the first cock portion 3a are arranged in the first circulation hole 4
When the second flow-in port 33 is opened by the first flow-through port 1, the second flow-in port 33 is formed by the third flow-through hole 43 and the fourth flow-through hole 44.
Open with 4. In parallel with this opening, the third inlet 35
Is configured to open with the third outlet 36 by the fifth circulation hole 45. On the other hand, when the inflow outlets 31 and 32 of the first cock portion 3 a are opened by the second circulation hole 42, the second inflow port 33 is connected to the fourth circulation hole 44.
Thus, the second outlet 34 side is switched to the third outlet 36 side to be opened. Therefore, the second cock portion 3b closes in parallel with the closing of the first cock portion 3a.

Each inflow / outflow port 31, 32, 33, 3 of the main body 3
Connection tools 90, 63, 63, 72, 73 and 80 are attached to 4, 35 and 36 via packings 37, respectively. In order to seal the water passage portions of the first cock portion 1a and the second cock portion 1b, each packing 38 is interposed at a required portion of the contact portion between the outer cylindrical body 3c of the main body 3 and the sleeve 3d. O-rings 47, 48, and 49 are provided at required portions of the contact portion between the plug 1 and the plug 2.

As shown in FIG. 3, the first cock portion 3a of the first
The inflow port 31 is communicated with a water faucet (not shown) via a communication pipe 90, and the first outflow port 32 is communicated with the inflow part 60 of the first container 6. In the 2nd cock part 3b, the 2nd inflow port 33 is the outflow part 61 of the 1st container 6,
The second outlet 34 is connected to the inflow part 70 of the second container 7 via the communication pipe 74, and the third inflow part 35 is connected to the communication pipe 75.
Through the outflow portion 71 of the second container 7 and the third outflow portion 3
6 are respectively connected to the water supply pipe 8.

The states of FIGS. 4 to 6 (a) (b) (c) are as follows:
Due to the first communication hole 41, the first inflow / outlet ports 31 and 32 are
The second inflow / outflow ports 33 and 34 are connected to the third communication hole 43 and the fourth communication hole 43.
The communication hole 44 of the third inlet / outlet 35, 36
The communication holes 45 are open. Therefore, the tap water flows into the first container 6 through the first cock portion 3a and is first purified, and then flows into the second container 7 through the second cock portion 3a and is secondarily purified. After that, water is again supplied from the water supply pipe 8 through the second cock 3a.

In the state shown in FIG. 6 (a), the cock portions 3a, 3b
Is closed, the plug 4 is rotated counterclockwise by 45 degrees. When the plug 4 is rotated 90 degrees counterclockwise from the state shown in the figure, the first inflow / outlet ports 31 and 32 of the first cock portion 3a are connected to the second communication hole 42 as shown in FIG.
Through the second inflow port 33 of the second cock portion 3b.
And the fourth outflow port 36 communicate with each other through the fourth communication hole 44. By this cock operation, the flow of water is switched in the portion of the second cock portion 3b, and the water that has been primarily purified in the first container 5 does not flow into the second container 7, but from the first container 5 Second inflow port 33, fourth communication hole 44, and third outflow port 3
It flows through 6 to the water supply pipe 8. When the cocks 1a and 1b are closed in the state shown in FIG. 9B, the plug 4 is rotated clockwise by 45 degrees. In this embodiment, in order to make the plug operation accurate as described above, an instruction panel (not shown) fixed to the main body 3 or other supporting member is installed on the back surface of the handle 40 or around the handle 40, and the handle 40 is rotated. In what direction one of the handles 40 is positioned, both containers 5 and 7 can be used, and only one container 5 can be used, and their use can be stopped. Whether or not it is possible is displayed on the instruction panel.

Next, the operation and effect of the cock of this embodiment will be described. In the state where water is flowing to the water supply pipe 3 via the first container 5 and the second container 7, as shown in FIGS. Inflow / outflow ports 31, 32, first water passage hole 41, and second inflow / outflow port 3
The third, third communication hole 43, the fourth communication hole 44, and the second outlet 34 are in a state in which those holes are aligned in the flow direction. On the other hand, the water passage hole 4 of the second cock 3b
The outlet side of 5 is formed to be tilted by an angle of θ1 and slightly displaced from the outlet 36, and the fifth water passage 4
The inlet side of 5 is formed to be slightly downwardly displaced from the third inflow hole 35. As a result, the third inflow port 35 and the third outflow port 36 are the first inflow and outflow ports when the plug 4 is turned in the counterclockwise direction in FIG. (A), that is, in the closing direction of the cock portions 3a, 3b. It is closed slightly later than 31 and 32, on the other hand, when the plug 4 is turned in the opening direction of the cocks 1a and 1b, it is opened slightly earlier than the inlet 11 and the outlet 12.

Further, the second inflow port 33 and the third outflow port 3
As for the 4th circulation hole 44 which opens 6, the outlet side to the 3rd outflow port 36 has a slight angle in the rotation direction when opening the inflow / outflow ports 33, 36 as shown in FIG. 6 (a). It is formed by shifting by θ2. As a result, when the inflow / outflow ports 33, 36 of the second cock portion 3b are opened from the state shown in FIG. 3 (a) to the state shown in FIG. It is opened a little earlier than the opening by the second communication hole 42, and when it is closed, it is closed a little later than the latter.

As described above, according to the cock of this embodiment, three pairs of inflow / outflow ports 31 and 32, 33 and 34, and 35 and 36 are formed in the main body 3, and the plug 4 opens and closes them. While forming the flow holes 41 and 42, 43 and 44, and 45 for performing, the second inflow port 33 is configured to be switched to the second outflow port 34 side and the third outflow port 36 side, Further, the opening and closing of the first cock portion 3a and the opening and closing of the second cock portion 3b are configured to be slightly different in timing. As a result, when two containers are installed in the liquid pipe along the flow direction and the use of the upstream container and the use of both containers are switched and used, inflow and outflow to the container are performed in parallel. When controlled, it is possible to prevent excessive pressure from being applied to the container. Therefore,
Since the container does not need to be manufactured to have a strong structure, it can be manufactured at a lower cost. Further, since the above-described operation can be performed by one cock, there is no possibility that the operation order of the inflow to the container and the outflow from the container is mistaken.

Modification of the Cock of the Second Embodiment In the second embodiment, the outlet side of the second cock portion 3b starts to open slightly earlier than the first cock portion 3a side starts to open, and the former closes. 5th in the 2nd cock part 1b so that the latter may start to be closed a little later than it starts.
The fourth circulation hole 45 and the fourth circulation hole 44 are formed so as to be slightly deviated from the outflow port 36. However, instead of such a configuration, for example, the following configuration also has the same effect. Play. The first is that the third inflow port 35 and / or the third outflow port 36 or both are formed in a state in which the cock operates as described above with a slight offset from the fifth flow hole 45, and The second inflow port 33, the third outflow port 36, or both of them are formed so as to be slightly displaced from the fourth flow hole 44. Secondly, in the state in which the cock operates as described above, both or one of the first inflow / outflow ports 31 and 32 is formed slightly offset from the first communication hole 41, and the first inflow / outflow port is formed. Both or one or both of 31, 32 are formed so as to be slightly displaced from the second communication hole 42. Thirdly, in the state where the cock operates as described above, the first through hole 41 is closed and the first inflow / outlet ports 31, 3 are connected.
The second communicating hole 42 is formed to be slightly displaced from both or one of the two, and the second communication hole 42 is formed to be slightly displaced from both or one of the first inflow / outflow ports 31 and 32.

[0029]

According to the first aspect of the invention, when the cock is operated in the opening direction, the second cock part is opened slightly earlier than the first cock part, and the cock is operated in the opposite direction. When this is done, the second cock portion is closed slightly later than the first cock portion. Therefore, by using this in communication with the container used in the liquid pipe and the pipe, the inflow side of the container And the outflow side can be controlled in a timely manner so that excessive water pressure is not applied to the container. Therefore, the container does not need to be manufactured to have a strong structure, and thus can be manufactured at a lower cost. Moreover, since the inflow and outflow can be controlled in parallel by a single cock as described above, there is no possibility that the operation order of the inflow to the container and the outflow from the container will be mistaken.

According to a second aspect of the present invention, one cock has a first cock portion and a second cock portion formed therein, and the first cock portion has two communication ports for a pair of inlets and outlets. A hole is formed, and the second cock portion corresponds to each communication hole of the first cock portion, and an opening / closing portion that leads from the inflow port to the outflow port, and again from the inflow port through another outflow part. Since the opening and closing part for returning to the outlet is provided, the use of both the upstream side and the downstream side containers and the use of the upstream side container only can be achieved by communicating with the two containers provided in the liquid pipe and the pipe. Can be easily operated so as to switch appropriately between the use and the use. Further, since the opening and closing of the second cock portion is configured to be performed at a timing slightly different from the opening and closing of the first cock portion, the inflow and outflow into and out of one or two containers provided in the liquid pipe. Can be controlled so that excessive pressure is not applied. Therefore, each container does not need to be manufactured to have a strong structure, and thus can be manufactured at a lower cost. Moreover, since the inflow and outflow as described above can be controlled in parallel by one cock, there is no risk of making a mistake in the operation sequence of the inflow to the container and the outflow from the container.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a cock according to the present invention.

FIG. 2 is a schematic cross-sectional view for explaining the action of the cock of FIG.

FIG. 3 is a partially cutaway front view showing another embodiment of the cock according to the present invention.

FIG. 4 is an enlarged sectional view of the cock of FIG.

5 is a cross-sectional view taken along the arrow AA of FIG.

FIG. 6 is a view for explaining the action of the cock of FIG.
5A is a schematic sectional view taken along the arrow BB of FIG. 5, FIG. 5B is a schematic sectional view taken along the arrow CC of FIG. 5, and FIG. 5C is a schematic sectional view taken along the arrow DD of FIG. , (D) is a schematic cross-sectional view showing a state in which the plug is rotated by a predetermined angle from (a).

[Explanation of symbols]

 1, 3 Main body 1a, 3a 1st cock part 1b, 3b 2nd cock part 10 Insertion part 11 1st inflow port 12 1st outflow port 13 2nd inflow port 14 2nd outflow port 15, 16 Packing 2,4 Plug 20 Handle 21 First flow hole 22 Second flow hole 23 Male screw part 24 Nut 25,26,27 O-ring 3c Exterior cylinder 3d Sleeve 31 First inlet 32 First outlet 33 2nd inflow port 34 2nd outflow port 35 3rd inflow port 36 3rd outflow port 37, 38 Packing 40 Handle 41 1st circulation hole 42 2nd circulation hole 43 3rd circulation hole 44th 4 circulation hole 45 5th circulation hole 46 male screw part 46a nut 46b spring washer 47, 48, 49 O-ring 5 container 50 inflow part 51 outflow part 6 first container 60 inflow part 61 outflow part 62, 63, 72, 73, 80, 90 Connecting tool 7 Second container 70 Inflow portion 71 Outflow portion 74, 75, 9 Communication pipe 8 Water supply pipe

Claims (2)

[Claims] 1. A plug 2 is inserted into the main body 1 in a liquid-tight manner so as to rotate within a predetermined angle range, and is formed in the main body 1 by a first flow hole 21 formed in the plug 2. It is formed in the main body 1 by the first cock portion 11a that opens the first inflow port 11 and the first outflow port 12 that are opened, and the second circulation hole 22 formed in the plug 2. The 2nd cock part 1b with which the 2nd inflow port 13 and the 2nd outflow port 14 are opened is provided, The 1st cock part 1a and the 2nd cock part 1b are It is opened and closed in parallel by the operation, and the next
A cock characterized by being configured as in (1) or (2). (1). The second inflow port 1 in the second cock portion 1b
3 or the second outlet 14 and the second flow hole 22
The first inflow port 11 and the first outflow port 12 of the first cock portion 1a start to open slightly earlier than the opening of the first inflow port 11 and the first outflow port 11 and the first outflow port. They are formed slightly offset from each other so that they begin to close slightly later than they do. (2). First inflow port 1 in the first cock portion 1a
1 or the 1st outflow port 12 and the said 1st circulation hole 21 are
The second inflow port 13 and the second outflow port 14 of the second cock portion 1b start opening slightly later than the opening of the second inflow port 13 and the second outflow port 13 and the second outflow port 13 and the second outflow port. They are formed slightly offset from each other so that 14 and 14 start to close slightly earlier than they start to close. 2. A plug 4 is inserted into the main body 3 in a liquid-tight manner and rotates in a predetermined angle range, and includes a first cock portion 3a and a second cock portion 3b. When the plug 4 is rotated in one direction by a predetermined angle, the cock portion 3a of the cock portion 3a has a first inflow port 31 and a first outflow port 32 formed in the main body 3, respectively. Opened by the first circulation hole 41,
When the plug 4 is rotated in the other direction by a predetermined angle, the first inflow port 31 and the first outflow port 32 are opened by the second flow hole 42 formed in the plug 4. In the second cock portion 3b, when the plug 4 is rotated in one direction by a predetermined angle, the second inflow port 33 and the second outflow port 34 formed in the main body 3 respectively, A third inflow port 43 formed in the main body 3 while being opened by a third communication hole 43 formed in the plug 4 and a fourth communication hole 44 communicating with the communication hole 43. The third outflow port 36 is opened by a fifth through hole 45 formed in the plug 4, and when the plug 4 is rotated by a predetermined angle in the other direction, the second inflow port 33 and the And the outflow port 36 of 3 is the fourth flow hole 4
4 is configured to be opened, and the first cock portion 1a and the second cock portion are
A cock having the structure as described in (3) or (4). (3). Third inflow port 3 in the second cock portion 3b
The fifth or third outflow port 36 and the fifth flow hole 45, and the second inflow port 33 or the third outflow port 36 and the fourth flow hole 44 are in the first cock portion 3a. The first inflow port 31 and the first outflow port 32 start opening slightly earlier than the opening, and the first inflow port 31
The first outlet 32 and the first outlet 32 are formed slightly offset from each other so as to start closing slightly later. (4). The first inflow port 3 in the first cock portion 3a
1 or the first outlet 32 and the first flow hole 41,
The third inflow port 35 and the third outflow port 36 in the second cock portion 3b start opening slightly later than the start of the opening, and the third inflow port 35 and the third outflow port 36 are opened. Are slightly displaced from each other in a state in which they start to close slightly earlier than the first start, and the first inflow port 31 or the first outflow port 32 and the second outflow port 32 in the first cock portion 3a. The communication hole 42 begins to open slightly later than the second inflow port 33 and the third outflow port 36 in the second cock portion 3b start to open, and
The inlet 33 and the third outlet 36 are formed slightly offset from each other so as to start closing slightly earlier than they start closing.