JPH0440059Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to improvements in on-off valves used as fire hydrants, water hydrants, and the like.

[Conventional technology]

Conventionally, this type of on-off valve has a ball having an L-shaped flow path communicating with the inflow and outflow ports in a valve box with an inflow port and an outflow port opening perpendicularly to each other. A valve stem is integrally connected to the ball, and the valve stem is rotatably supported by a short cylindrical bearing protruding from the valve box. Widely used valve valves are constructed in such a way that a lever is fitted onto a square shaft of a valve shaft that protrudes from the valve shaft, and the flow passage is opened and closed by rotating the lever.

In such an on-off valve, the lever has a valve open position where the flow path of the ball fully communicates with the inflow and outflow ports, and a 90° phase angle with respect to this valve open position where the lever communicates with the flow path and the inflow and outflow ports. The lever is rotated between two positions, a valve closed position and a valve closed position where communication with the outlet is interrupted, but in the past, in order to prevent further rotation of the lever between the valve open position and the valve closed position, While forming a 90° notch on the outer periphery of the protruding end of the valve box bearing,
By providing an engaging protrusion protruding on the peripheral surface of the pivot shaft of the lever and configuring the engaging protrusion so that it can come into contact with both end surfaces of the notch, when the lever is pivoted,
In the valve open position, the engaging protrusion abuts one end surface of the notch, and in the valve closed position, the engaging protrusion abuts the other end surface of the notch.

[The problem that the idea attempts to solve]

By the way, if there is a wall near the installation position of the on-off valve that is perpendicular to the installation surface of the on-off valve, the vertical wall may interfere with the rotation operation area of the lever, making it difficult to turn the lever. This may lead to inconvenience that the operation cannot be performed.

In such a case, in the above-mentioned conventional configuration, since the notch for regulating the rotation range of the lever is fixed to the valve box side, the lever can be operated in the installation direction of the on-off valve itself. In addition, in some cases, it may be necessary to replace the connection between the inlet of the on-off valve and the water supply pipe.
There was a problem in that they were forced to perform work that involved considerable effort and difficulty.

The present invention was developed to solve the above-mentioned conventional problems, and it is possible to easily change the rotational operation area of the lever without changing the overall orientation of the on-off valve. The purpose is to provide an on-off valve that can be easily installed in existing locations.

[The problem that the idea attempts to solve]

To achieve the above object, the present invention provides a valve body 1 having inflow and outflow ports 13 and 14 that are perpendicular to each other, as shown in the drawings of the embodiment. A ball 2 provided with a communicating L-shaped flow passage 21 is rotatably installed inside, and a valve shaft 3 integrated with the ball 2 is rotatably attached to a short cylindrical bearing portion 15 protruding from the valve box 1. The on-off valve is configured such that a lever 4 is fitted onto the square shaft portion 32 of the valve shaft 3 which is supported by the short cylindrical bearing portion 15, and the flow passage 21 is opened and closed by rotation of the lever 4. , a circular ring body 6 that rotates integrally with the lever 4 is fitted into the short cylindrical bearing portion 15, and 90° notches 63 are formed on both sides of the circular ring body 6 in the axial direction.
64 is provided on both end surfaces 63 of the notches 63 and 64.
A, 63b, 64a, and 64b are configured so as to be able to come into contact with an engaging protrusion 15a protruding from the short cylindrical bearing portion 15.

In addition, as shown in FIGS. 1 to 7, the circular ring body 6 is formed separately from the lever 4, and the central square hole 62 of the disc portion 61 provided on the inner peripheral surface of the circular ring body 6 is formed separately from the lever 4. The lever 4 may be configured to rotate integrally with the lever 4 by fitting into the square shaft portion 32 of the valve stem 3, or as shown in FIGS. A circular ring body 6 may be integrally formed at the tip of the circular ring body 6, and cutouts 63 and 64 provided on both sides of the circular ring body 6 may be oriented in the same direction.

[Effect]

With the above configuration, the present invention reverses the direction of the circular ring body 6 when an object such as a wall interferes with the rotation operation area of the lever 4 fitted to the square shaft part 32 of the short cylindrical bearing part 15. By fitting into the short cylindrical bearing part 15, the engagement protrusion 15a and the notch 6 of the circular ring body 6
Since the relative positional relationship between the valve open position and the valve closed position of valves 3 and 64 is switched, and the rotation direction of the lever 4 can be reversed, the rotation operation area of the lever 4 is also a spatial area that does not interfere with objects such as walls. This will be changed to

In this case, if the circular ring body 6 is formed separately from the lever 4, only the circular ring body 6 is inverted, and the central square hole 61 of the disk portion 61 provided on the inner peripheral surface of the circular ring body 6 is By fitting this into the square shaft portion 32 of the valve stem 3, the lever 4 can be rotated integrally with the lever 4 while the relative positional relationship between the notches 63, 64 of the circular ring body 6 and the engagement protrusion 15a is switched. It is something that can be moved.

Furthermore, in the case where the circular ring body 6 is integrally provided at the tip of the lever 4, by fitting the lever 4 into the square shaft part 32 of the short cylindrical bearing part 15 in an inverted state, one side of the circular ring body 6 can be attached. The other notch portions 63 and 64 abut on the engagement protrusion 15a with their relative positions swapped.

〔Example〕

Hereinafter, embodiments of the on-off valve according to the present invention will be described in detail based on the drawings. In Figures 1 to 3,
Reference numeral 1 denotes a valve box, and a spherical valve chamber 12 in which a ball 2 is housed is provided in the center of the interior of the main body 11, and the inlet and outlet ports 13 and 14 communicate with this valve chamber 12 and are oriented at right angles to each other. At the same time, a short cylindrical bearing part 15 communicating with the valve chamber 12 is provided protrudingly on the side opposite to the outlet 14 across the valve chamber 12, and at the external opening end of the inlet 13. A joint part 13a is provided to be connected to a buried water pipe (not shown), etc., and a joint part 14a to be connected to a hose, a nozzle (not shown), etc. is provided at the external open end of the outlet 14, respectively. There is.

The ball 2 is connected to the inflow and outflow ports 13 and 14.
An L-shaped flow passage 21 communicating with the L-shaped flow path 21 is provided through the
A square hole 22 for connection with the valve shaft 3 is recessed in the rear end of the flow passage 21, and the valve chamber 1 of the valve box 1
Valve seat bodies 12a, 12a provided oppositely in 2
It is rotatably supported in sliding contact with.

Further, the valve shaft 3 has a base end square shaft portion 31 that fits into the connection square hole 22 of the ball 2 at the base end, and a square shaft portion 32 where the lever 4 is fitted near the tip end. furthermore, a bolt 33 for fixing the lever is connected to the tip end following the square shaft part 32,
The base end square shaft portion 31 is fitted into the connection square hole 22 of the ball 2 to be connected to rotate integrally with the ball 2, and the short cylindrical bearing portion 15 of the valve box 1
is rotatably supported by the lever fitting square shaft portion 3 when inserted into the bearing portion 15.
2 protrudes outward from the bearing portion 15.

Furthermore, the lever 4 has a square hole 42 inserted into the flat plate portion 41 of the valve shaft 3, and a blip portion 43 from the flat plate portion 41 of the lever 4.
By fitting the square hole 42 into the square shaft portion 32 of the valve shaft 3 and rotating it, the ball 2 can be moved around the axis of the valve shaft 3 via the valve shaft 3. It is rotated to open and close the L-shaped flow path 21 of the ball 2. Note that 5 is a tightening nut that is screwed onto the bolt 33 of the valve shaft 3.

In an on-off valve having such a basic configuration,
A circular ring body 6 formed separately from the lever 4 is fitted into the short cylindrical bearing portion 15 of the valve body 1 . This circular ring body 6 has a disk portion 61 on the inner peripheral surface at the center in the axial direction.
A square hole 62 is provided in the center of the disc part 61 to fit into the square shaft part 32 of the valve shaft 3, and
A 90° notch 63 is provided on both sides of the disk portion 61 in the axial direction.
64 are arranged facing in the same direction. On the other hand, on the outer periphery of the short cylindrical bearing portion 15 of the valve box 1, a single engagement protrusion 15a that can come into contact with both end surfaces of the notches 63 and 64 of the circular ring body 6 is provided.

Then, the circular ring body 6 is attached to the short cylindrical bearing portion 1 of the valve body 1.
5, as shown in FIG. 1
5 in the state where the engagement protrusion 15a is located, the bearing part 1
Further, the square hole 42 of the lever 4 is fitted into the square shaft part 32 of the valve shaft 3, and one side of the flat plate part 41 at the tip of the lever 4 is inserted into the other notch of the circular ring body 6. After making contact with the circumferential surface of the valve shaft 3, tighten the bolt 3 of the valve shaft 3.
By screwing the tightening nut 5 into the short cylindrical bearing part 15, a circular ring body 6 is formed between the tightening nut 5 and the short cylindrical bearing part 15.
and lever 4 are tightened together.

In the on-off valve configured as described above, the valve shaft 3 and the circular ring body 6 rotate integrally with the lever 4, and both end surfaces 63a, 6 of one notch 63 in the circular ring body 6 are rotated integrally with the lever 4.
3b comes into contact with both end surfaces of the engagement protrusion 15a provided on the short cylindrical bearing part 15 of the valve box 1, within an angular range of 90°.
The lever 4 can be rotated, and one end surface 63a of the one notch 63 shown in FIG.
When the lever 4 is rotated until the ball 2 contacts the engagement protrusion 15a, the flow path 21 of the ball 2 flows into the
The valve is in the open position where it fully communicates with the outflow ports 13 and 14, and the lever 4 is rotated in the opposite direction to engage the other end surface 63b of the one notch 63 with the engaging protrusion 15a.
When brought into contact with the ball 2, the phase angle differs by 90° from the valve open position, and the valve closes, in which the flow path 21 of the ball 2 and the inflow and outflow ports 13 and 14 are disconnected.

Furthermore, when an object (not shown) such as a wall interferes with the rotation operation area of the lever 4 shown in FIG. By fitting, as shown in FIG. 5, the other notch 64 of the circular ring body 6 and the engaging projection 15a
The relative positional relationship between the valve open position and the valve closed position is switched, the rotational direction of the lever 4 is reversed, and the rotational operation area of the lever 4 is changed to a spatial area where the object does not interfere.

As shown in FIG. 6, on one side of the grip part 43 of the lever 4, there is a figure A with the word "open" written inside a white arrow pointing to the right or upward, indicating the valve opening direction of the lever 4. On the other hand, as shown in FIG. 7, on the other side of the grip part 43, there is an "open" mark inside the left-hand or downward-pointing white arrow, opposite to the shape A.
By forming the figure B with the characters , the mounting direction of the lever 4 can be changed in accordance with the relative positional relationship between the notches 63 and 64 of the circular ring body 6 and the engagement protrusion 15a. The direction in which the lever 4 is rotated can be determined at a glance.

FIGS. 8 to 11 show other embodiments of the on-off valve according to the present invention.
It is formed integrally with the circular ring body 6 at the tip of the lever 4,
A square shaft portion 32 of the valve shaft 3 is located in the center of these circular annular bodies 6.
A square hole 62 is formed to fit into the square hole 6.
In this case, the square hole 62 of the circular ring body 6 also serves as the square hole 42 of the lever 4 of the above embodiment. By reversing the direction of the lever 4, the direction of the circular ring body 6 can be reversed at the same time. Therefore, in the case where figures A and B are formed on both sides of the lever 4 to indicate the rotation operation direction, the notch 63 or 6 of the circular ring body 6 is
4 orientation and the corresponding figure A or figure B
Since the arrangement relationship with the figures A,
B and the direction of the notches 63, 64 are sure to match, thereby eliminating the possibility of attaching the lever 4 and the circular ring body 6 in the wrong direction.

[Effect of idea]

As explained above, when using the on-off valve of the present invention, the short cylindrical bearing part 15 provided in the valve box 1 is covered with the circular ring body 6 that rotates integrally with the lever 4 for opening and closing the flow passage 21. 90° notches 63, 64 are provided on both sides of the circular ring body 6 in the axial direction, and both end surfaces 63a, 63b, 64a, 6 of the notches 63, 64 are fitted.
4b is configured to be able to come into contact with the engagement protrusion 15a protruding from the short cylindrical bearing part 15, so that the lever 4 fitted to the square shaft part 32 of the short cylindrical bearing part 15 can be rotated. When objects such as walls interfere with the area,
The direction of the circular ring body 6 is reversed to form a short cylindrical bearing portion 15.
By just fitting it into the lever 4, the relative positional relationship between the valve open position and the valve closed position of the engaging protrusion 15a and the notches 63, 64 of the circular ring body 6 is reversed, and the direction of rotation of the lever 4 is reversed. The rotation operation area of the lever 4 can be changed to a spatial area that does not interfere with objects such as walls.

Therefore, there is no need for labor-intensive work such as changing the mounting position of the entire valve body 1, and the lever can be installed by simply changing the orientation of the circular ring body 6 and reattaching it to the valve stem 3. The operation direction of lever 4 can be changed to a spatial area that does not interfere with objects such as walls, so if there is a wall etc. near the installation position of the on-off valve and it interferes with the rotation operation area of lever 4. It can be easily installed anywhere, and has great practical effects.

Furthermore, in this case, if the circular ring body 6 is integrally provided at the tip of the lever 4, the orientation of the notches 63 and 64 of the circular ring body 6 can be reversed simply by changing the direction of the lever 4. By forming a figure etc. on both sides of the lever 4 that indicates the operating direction, the lever 4 can be attached in the desired direction by looking at the figure, and the circular ring 6 can be moved in the operating direction indicated by the figure.
As a result, practical convenience has been further improved, such as the ability to rotate.

[Brief explanation of the drawing]

Fig. 1 to Fig. 7 show an embodiment of the present invention, Fig. 1 is a partially cutaway side view, Fig. 2 is a front view,
Fig. 3 is an exploded perspective view of the main part, Fig. 4 is a front view of the main part showing a state in which one notch of the circular ring body is engaged with the engagement protrusion, and Fig. 5 is a front view of the main part showing the state in which one notch of the circular ring body is engaged with the engagement protrusion. Front view showing a state in which the notch is engaged with the engagement protrusion, No. 6
The figure is a front view of the lever. FIG. 7 is a rear view of the lever. Figures 8 to 11 show other embodiments of the present invention, in which Figure 8 is a vertical sectional side view of the main part, Figure 9 is a front view of the lever, Figure 10 is a rear view of the lever, and Figure 11 is a rear view of the lever. The figure is a partially cutaway side view of the lever. DESCRIPTION OF SYMBOLS 1... Valve box, 13... Inlet, 14... Outlet, 15... Short cylindrical bearing part, 15a... Engaging protrusion, 2... Ball, 21... L-shaped flow path, 3...
...Valve stem, 32... Square shaft part of the valve stem, 4... Lever,
6...Circular ring body, 61...Disc part, 62...Central square hole, 63, 64...Notch part, 63a, 63b,
63a, 63b...Both end surfaces of the notch.

Claims (1)

[Claims for Utility Model Registration] A ball having an L-shaped flow path 21 communicating with the inflow and outflow ports 13 and 14 in a valve box 1 having inflow and outflow ports 13 and 14 that are open at right angles to each other. 2 is rotatably installed inside, and the valve shaft 3 integrated with the ball 2 is rotatably supported by a short cylindrical bearing part 15 protruding from the valve body 1, and from this short cylindrical bearing part 15. In the on-off valve configured such that a lever 4 is fitted onto the square shaft portion 32 of the protruding valve shaft 3 and the flow passage 21 is opened and closed by rotation of the lever 4, the lever 4 is fitted onto the short cylindrical bearing portion 15. A circular ring body 6 that rotates integrally with the circular ring body 6 is fitted, and 90° notches 63 and 64 are provided on both sides of the circular ring body 6 in the axial direction.
an engaging protrusion 15a with both end surfaces 63a, 63b, 64a, 64b protruding from the short cylindrical bearing portion 15;
An on-off valve characterized by being configured so that it can come into contact with. A circular ring body 6 is formed separately from the lever 4, and a central square hole 62 of a disc portion 61 provided on the inner peripheral surface of the circular ring body 6 is fitted into the square shaft portion 32 of the valve shaft 3. 2. The on-off valve according to claim 1, wherein the on-off valve is configured to be rotated integrally with the lever 4 by the lever 4. A circular ring body 6 is integrally formed at the tip of the lever 4, and cutouts 6 are provided on both sides of the circular ring body 6.
3 and 64 are directed in the same direction.