JPH075333Y2 - 3-way cock for hot water - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a three-way cock for hot and cold water.

[Conventional technology and its problems]

The cock has been used for a long time, and its advantage is that it can be opened and closed by turning the knob of the plug or the lever handle. It is easy and quick to open and close, and there is little fluid resistance to adjust the flow rate. Is also suitable, but since it has a wide airtight area (grinding surface) and a large friction, it has a disadvantage that it cannot be used for large pressure fluctuations and large diameters due to large operating torque.

Therefore, if such a cock is applied to a three-way cock, the airtight area is reduced and the friction is reduced, so that the cock can be operated lightly.

However, when the conventional three-way cock is used for a long period of time, abrasion occurs between the plug and the valve box, and the drainage becomes poor because the plug has a communication port. Therefore, a seal has been conventionally interposed between the plug and the valve box, but both seals are provided at the outflow / outlet port of the valve box (for example, Japanese Patent Publication No. 52-26).
(See FIGS. 10 and 11 of Japanese Patent No. 326), which is not preferable in terms of durability and price.

On the other hand, regarding the three-way cock, for example, in Japanese Utility Model Publication No. 50-29538 and Japanese Utility Model Publication No. 52-86022, two O-rings for the outlet are extremely large on the plug side compared to the outlet of the valve box. However, there is a problem in that the drainage of the valve box at the time of simultaneous closure is poor, the cost is high, the groove processing is troublesome, and the friction resistance is large.

[Means for solving problems]

Therefore, the present invention has been devised to eliminate such a problem, and the gist of the present invention is to have substantially the same openings.
An inlet (8) and at least two outlets (9),
The stoppers (2) having handles (7) were rotatably inserted into valve boxes (1) provided at 90 ° equal intervals on the same plane orthogonal to the rotation axis of the stoppers. At 2), three first, second, and third communication ports (13) communicating with each other and provided at 90 ° intervals on the same surface can be aligned with the outflow / inlet (8, 9) positions. And the plug (2) is provided with the first, second and third communication ports (13), and the outflow / inlet (8, 9) is provided on the outer peripheral surface in one direction on the remaining same plane. One O-ring groove (14) slightly larger than the opening of
Since the O-ring (10) is buried in the inflow port (8)
In the three-way cock for hot and cold water, the two outlets (9) and (9) are simultaneously opened and one of the outlets (9) is opened.

〔Example〕

 The present invention will be described in detail with reference to the embodiments shown in the accompanying drawings.

Although the drawing shows a four-way cock, the two outlets are covered. Reference numeral 1 is a metal valve box having a three-way cock, and 2 is a cylindrical plastic plug rotatably inserted in the valve box 1. 3 inserts this plug 2 into the valve box 1 and then prevents it from coming off.
Moreover, it is a lid for forming a cylindrical space and is screwed to the valve box 1. 4 is a cap nut, which is rotatably mounted on the valve box 1 via a ring screw 5. Note that FIG. 2 shows a state in which the packing is placed on the ring screw 5.
6 is a shaft of a lever handle 7 projecting from one end surface of the stopper 2,
A lever handle 7 is fixed to the shaft 6. 8 is 1
Inlet, 9 indicates one of at least two outlets. The inflow port 8 and the outflow port 9 have substantially the same opening and are opened in the same plane orthogonal to the rotation axis of the plug 2.

Here, in the present embodiment, the plug 2 is provided with first, second and third communication ports 13, 13, 13 in three directions at 90 ° intervals on the same plane orthogonal to the rotation axis thereof. One groove 14 of the O-ring 10 is provided in the remaining direction of the same surface, which communicates with the cylindrical space provided inside 2, and does not have these communication ports 13. The groove 14 of the O-ring 10 is slightly larger than the openings of the outflow / inlet ports 8 and 9, that is, it surrounds the outflow / inlet ports 8 and 9. 11 and 12 are other O-rings, both of which seal the stopper 2 in the direction of the rotation axis, and the O-ring 11 is between the valve box 1 and the stopper 2,
The 12 O-rings seal between the valve box 1 and the lid 3. In addition to the outflow / inlet ports 8 and 9, the valve box 1 is provided with two other outflow ports (not particularly shown) opened in the same plane as the outflow / inlet ports 8 and 9 at right angles. However, these other outlets are temporarily covered with lids 15 and 16. And when used as a three-way cock, the outlet should be at least 2
Use one.

Next, the operation of this embodiment will be described. 3 for hot water as above
Attach the one-way cock so that it communicates with the water pipe and the hot water pipe of the water heater. That is, the cap nut 4 is connected to the upstream pipe (not shown).
To the downstream side pipe (not shown), remove the right or left lid 15 or 16 and screw to another downstream side pipe (not shown). Connecting. For example, a water pipe is attached to the upstream pipe, the left lid 15 is removed, the upstream side of the hot water pipe is attached, and a sprinkler (not shown) is attached to the outlet 9 to form a faucet.

Therefore, when the plug is closed as shown in FIG.
The opening of the inlet 8 is surrounded by an O-ring 10 and sealed.

Also, as shown in FIG. 3 (B), when opening in two directions,
When the lever handle 7 is rotated, one of the communication ports (13), for example, the first communication port 13 communicates with the inflow port 8, so that the second
Since the third communication ports 13 and 13 are provided at 90 ° intervals, the third communication port 13 communicates with the outflow port 9 and the second communication port 13
The communication port (13) communicates with the outflow port with the lid (15) removed and is simultaneously opened. That is, it can be opened in two directions. At that time, since the O-ring 10 is moved to the lid 16 side by the rotation of the stopper 2,
It has nothing to do with the opening.

Next, if it is attempted to close only the outflow port 9 in such a state, as shown in FIG. 3 (C), the lever handle 7
When further rotating 90 degrees in the same direction as when the plug is opened in the above two directions, the O-ring 10 surrounds and seals the outlet 9.

[Effect of device]

According to the present invention, the diameter of the O-ring is slightly larger than the opening of the outflow / inlet, so that a small one can be used, and at the same time, it is cheaper, and therefore "crushing white" is also small, and the friction resistance is small and the plug is small. The operation of can be done lightly.

Since one O-ring is provided on the outer peripheral surface in the remaining direction other than the three communication ports on the same surface of the stopper, the cost is low and the drainage in the valve box at the time of simultaneous closure is good.

Despite being a three-way cock, it is a single O-ring, has a small diameter, and is provided on the outer peripheral surface of the plug with no opening, so there is no risk of the O-ring coming off from the shallow groove, and the groove can be easily processed. .

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is an exploded perspective view of FIG. 1, and FIG. 3 is a sectional view from P to FIG. 1 ... Valve box, 2 ... Stopper, 6 ... Shaft, 8 ... Inlet, 9 ... Outlet,
10 ... O-ring, 13 ... Communication port, 14 ... Groove.

Claims (1)

[Scope of utility model registration request] 1. An inflow port (8) and at least two outflow ports (9) having substantially the same opening are directed in three directions on the same plane orthogonal to the axis of rotation of the stopper, and are equally spaced by 90 °. Valve box (1)
A plug (2) having a handle (7) was rotatably inserted into the plug, and the plug (2) was provided with three first, second and A third communication port (13) is provided at a position where it can be matched with the outflow / inlet (8, 9), and the plug (2) is provided with these first, second and third communication ports (13). On the outer peripheral surface in one direction that is not the same surface, there is a slightly larger O than the opening of the outflow / inlet (8, 9).
By providing one ring groove (14) and embedding the O-ring (10) in the groove (14), the inlet (8) is closed and the two outlets (9) and (9) are simultaneously opened. , And one of the outlets (9) is opened.