JPS6233176Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a two-channel simultaneous opening/closing device, for example, a water heater and a fan convector, etc., which are disposed near a hot water supply terminal equipment such as a water heater and a fan convector to form a circulation circuit, and simultaneously connect the outgoing and incoming routes. This invention relates to a device for simultaneously opening and closing two channels, such as a so-called hot water supply box valve.

Conventionally, lift valves used in water faucets, etc.
The valve body moves up and down following the elevation and descent of an operating shaft screwed into the main body, and when the valve is closed, the valve body is directly pushed down by the operating shaft.

When this lift valve is used as it is for a two-flow path simultaneous opening/closing device such as a hot water supply box valve, and the two valve bodies are raised and lowered synchronously by operating one operating shaft, when the two flow paths are simultaneously closed, each flow path is Although the corresponding lift valves descend synchronously, they do not necessarily sit on the valve seats at the same time due to variations in the valve seat positions.

If one lift valve is seated and closed, and the other lift valve is not completely seated, the intended function as a two-channel simultaneous opening/closing device cannot be fully fulfilled.

With this invention, even if there is some dimensional variation or installation error in parts such as the operating shaft and valve stem, and an error occurs in the timing when each lift valve seats on the valve seat, each lift valve absorbs the error. The technical problem is to ensure that each lift valve is fully closed when the operating shaft is fully closed.

The technical means of the present invention for solving the above problems is as follows: An operating shaft 45 is screwed into the main body 3, two mutually independent channels are formed, and a lift valve is installed in these channels to open and close the channels. 41 and 42 are inserted separately, one lift valve 41 is provided at the tip of the operating shaft 45, and the other lift valve 42 is provided at the tip of the operating shaft 45.
The lift valves 41 and 42 are mechanically connected to open and close in synchronization with the one lift valve 41, and each lift valve 41, 42 is pressed against the valve seat facing them by screwing the operating shaft 45. In the dual flow path simultaneous opening/closing device, the lift valve 41 provided on the operating shaft 45 has a valve shaft 46 that protrudes coaxially with the tip of the operating shaft 45, and a valve shaft 46 that is slidably fitted onto the valve shaft 46. A valve body 49 is biased toward the distal end by a spring 46, and an enlarged head is formed at the distal end of the valve shaft 46 to restrict the movement range of the valve body 49. Like the one lift valve 41 described above, the valve 42 has a valve shaft 73 having an enlarged head at its tip, is slidably fitted onto the valve shaft 73, and is biased toward the tip by a spring 39. The valve body 79 is made up of a valve body 79.

The above technical means works as follows.

When the operation shaft 45 in the open state is rotated to close and the operation shaft 45 is screwed into the main body 3, each lift valve closes accordingly, and the downstream flow path is cut off. Even if there is a dimensional variation or installation error in the valve stem or operating shaft provided in each flow path, and an error occurs in the seating timing of both valve bodies based on these, the valve body that is seated first will be seated by the spring. The valve body slides on the valve stem while being biased by the state, and even if the other valve body is seated later, both valve bodies will eventually be seated in a fully closed state.

Therefore, when the operating shaft is in the fully closed state, each lift valve can be ensured to be in the completely closed state.

Moreover, since the present invention has the above configuration, it has the following unique effects.

In other words, since the valve body is made to slide on the valve stem to absorb errors in seating timing, uneven pressure contact force on the valve body causes unevenness in the valve bodies of both flow paths after long-term use. Even if wear occurs, the valve closing performance will not be affected regardless of whether the valve seat height is the same or not.

Next, an embodiment of the present invention described above will be described based on the drawings.

The illustrated embodiment is an example in which the dual flow path simultaneous opening/closing device of the present invention is applied to a hot water supply box valve, but as shown in FIGS. a main body 3,
Lift valves 4 disposed on these outbound and return routes
1 and 42, lift valves 43 and 44 that are opened and closed by attaching and detaching a plug, and a plug lock mechanism 5.

One end of the outgoing path 31 and the incoming path 32 is open for connection to a heat source device (not shown) side circuit such as a water heater, and the other end is open as plug connection holes 6, 6 for connecting a plug of a terminal device. are doing.

The plug connection holes 6, 6 are provided with a normally closed lift valve 43,
44 is arranged, and an operating shaft 45 is provided on the upstream side.
Another lift valve 41 that opens and closes according to the operation of
A lift valve 42 interlocked with this is inserted.

The valve body 49 of the lift valve 41 is connected to the valve seat 4 of the outgoing path 31.
8, and is attached to the operating shaft 45 via a valve shaft 46. Further, the valve body 49 is configured to be able to slide on a smooth end portion 99 of the valve shaft 46 which has an enlarged head 40 at the end thereof, and is urged in the valve closing direction by a spring 39. .

A screw 47 is carved into the operating shaft 45, and is screwed together with the main body.

On the other hand, the lift valve 42 stored on the return path 32 side is
It is configured similarly to the lift valve 41 described above. The lift valve 42 is interlocked with a gear 71 externally fitted and fixed to the operating shaft 45 and a gear 72 externally fitted and fixed to the valve shaft 73 of the lift valve 42.
3 and the main body 3 are screwed together. Therefore, the lift valve 42 on the return trip opens and closes in synchronization with the lift valve 41 on the outbound trip.

In addition, as the plug lock device 5, the
144891 and 56-115089 are adopted, the actuation plate 52 is biased by a spring, and the actuation plate 52 has an operating lever 51 and slide plates 53, 54.
When the plug (not shown) is connected to the connecting holes 6, 6, the actuating plate 52 and the slide plates 53, 54 interlocked therewith move forward to connect and hold the plug, and the operating lever 51 is moved outward ( When pulled in the direction of the arrow in FIG. 2, the holding state is released.

When the plugs are connected to the plug connection holes 6, 6, the lift valves 43, 44 are pushed in and opened by the plugs, and at the same time, the plugs are locked in the connected state by the above action, and then the operation shaft is operated to open each flow. The road can be left open.

Now, in order to disable the hot water supply box valve that is in use as described above, the operating shaft 45 is rotated closed, the operating lever 51 is pulled outward, and the plug is removed. When the shaft 45 is rotated to close, even if there are dimensional variations in the valve shaft, operating shaft, and valve seat positions, and an error occurs in the seating timing of both valve bodies based on these, as shown in FIG. Even if one of the valve bodies 49 is seated first, the valve body slides on the valve shaft 46 while being biased toward the seated state by the spring 39, and absorbs the error in the seating timing by a constant stroke l. Therefore, when the operating shaft is brought into a fully closed state, both flow paths 31 and 32 are maintained in a completely closed state.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of an embodiment of the present invention, Fig. 2 is a front view thereof, and Fig. 3 is a sectional view of the main parts.
6, 73... Valve shaft, 49, 79... Valve body.

Claims (1)

[Scope of utility model registration request] An operating shaft 45 is screwed into the main body 3, and two mutually independent channels are formed. Lift valves 41 and 42 for opening and closing the channels are inserted into each of these channels, and one of the lift valves 41 is The other lift valve 42 is provided at the tip of the operating shaft 45.
The lift valves 41 and 42 are mechanically connected to open and close in synchronization with the one lift valve 41, and each lift valve 41, 42 is pressed against the valve seat facing them by screwing the operating shaft 45. In the dual flow path simultaneous opening/closing device, the lift valve 41 provided on the operating shaft 45 has a valve shaft 46 that protrudes coaxially with the tip of the operating shaft 45, and a valve shaft 46 that is slidably fitted onto the valve shaft 46. A valve body 49 is biased toward the distal end by a spring 46, and an enlarged head is formed at the distal end of the valve shaft 46 to restrict the movement range of the valve body 49. Like the one lift valve 41 described above, the valve 42 has a valve shaft 73 having an enlarged head at its tip, is slidably fitted onto the valve shaft 73, and is biased toward the tip by a spring 39. A two-channel simultaneous opening/closing device composed of a valve body 79.