JP3037867B2 - Ball stopcock with water volume control function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball stopcock provided at a base of a branch pipe for stopping water supply to a branch pipe when water is branched from a main pipe of a water supply pipe to a branch pipe. TECHNICAL FIELD The present invention relates to a ball stopcock with a water amount adjusting function which can supply water by adjusting the amount of water without performing water supply.

[0002]

2. Description of the Related Art Water distribution from a main pipe of a water supply pipe to a branch pipe requires adjustment of a water supply pressure and an amount of water depending on a water supply environment. The regulation of water and water flow is an important function.

Conventionally, the water supply pressure and the amount of water have been adjusted by a method in which a water valve b is narrowed by turning a ball valve a of a water stopcock half a turn as shown in FIG. However, according to this method, the water pressure passing through the constricted portion e is applied to the sharp portion d of the ball valve water passage, and the sharp portion is worn to shorten the life of the water stopcock. There is a problem that knocking or whirlpool noise is generated by winding.

[0004] In order to cope with such a problem, a ball stopcock has been proposed and used in which a cylindrical throttle valve having a curved end portion protrudes and retracts in a water passage of a ball valve to adjust the amount of water.

[0005]

In a conventional cylindrical throttle valve, an operating shaft is a screw, which is rotated to lift and lower a valve body into a water passage, and the operating shaft is rotated many times. The operation is troublesome because the user has to make the operation.

Further, since the operation is performed by rotating the operation shaft,
Although it is difficult to confirm the degree of narrowing of the water channel and it is difficult to properly adjust the water flow, there remains a problem that the generation of whirlpool noise cannot be completely prevented.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and has been made in view of the above-mentioned circumstances. This is supported by providing the device operable independently of the operation.

[0008]

In other words, when the plate-shaped rotary valve is parallel to the water channel, the water flow receives only a slight resistance and allows the water flow from the main pipe to pass as it is, but the plate-shaped rotary valve rotates. Accordingly, the plate surface gradually opposes the water flow to obstruct the passage of the water flow, and closes the water passage by being orthogonal to the water passage.

The water flow is opposed to the plate surface by the rotation angle of the plate-shaped rotary valve, and the water pressure from the main pipe is attenuated and the amount of water is adjusted. This makes it possible to calculate the amount of passing water, and if the water pressure at the site is known, the rotation angle can be instructed.

In addition, the rotation of the plate-shaped rotary valve causes the plate surface to form an inclined surface with respect to the flow direction of the water flow, and the water flow flows along the inclined surface. The occurrence is prevented.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a ball stopcock body which is substantially at the center of the water passage portion 2,
The ball valve 3 supported and accommodated by the valve seats 21 and 22 is included.

A water passage 31 penetrates through the center of the ball valve 3, and a fitting recess 32 for fitting the rotating shaft 4 for rotating the ball valve 3 is formed in the upper portion. An insertion hole 33 through which the plate-shaped rotary valve 5 is inserted passes through the central portion.

The rotating shaft 4 is inserted upright through the water stopcock main body 1, and its distal end is fitted into the fitting concave portion 32 of the ball valve 3 and is fastened with a cap nut 41. handle
42 is fitted, and its upper part is further fastened with a cap nut 43.

A plate-like valve body provided at the tip of the rotary operation shaft 51 penetrates through the center axis of the rotary shaft 4 through an insertion hole 44 through which the rotary operation shaft 51 of the plate-shaped rotary valve 5 is inserted. The rotation shaft 4 and the rotation operation shaft 51 can be operated independently of each other by being rotatably inserted into the seat 53 of the 52.

The plate-shaped valve body 52 is formed as a spatula-shaped plate body having a curved end whose tip is adapted to the shape of the bottom of the water passage 31 of the ball valve. It is formed into a curved surface and is integrally implanted in the seat 53, and is rotated by the rotation of the operation shaft 51.

A fitting groove 54 for a driver for rotating the shaft 51 is formed at the end of the rotating operation shaft 51, and the operator adjusts the water amount by rotating the operation shaft 51 to a predetermined angle by a driver possessed by the driver. Is what you do.

[0017]

Since the present invention is constructed as described above, the water stop of the ball water stopcock is performed by rotating the operation handle 42 by 90 degrees, and the water amount is adjusted while the ball valve is fully opened.
By rotating the plate-shaped rotation valve 5 by a predetermined angle, even a beginner can properly and reliably perform the operation if the angle is specified.

Further, the rotation of the plate-shaped valve element 52 causes an inclined surface to be formed on the plate surface 55 with respect to the flow direction of the water flow, and the water flow flows along the inclined surface, so that the water flow can be smoothly swirled. The generation of noise can be prevented, and the generation of noise can be eliminated.

[Brief description of the drawings]

FIG. 1 is an overall sectional view of a ball stopcock showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an explanatory view showing a flow state of a throttle water flow in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ball stopcock main body 2 Water stoppage of stopcock 21 Support valve seat of ball valve 22 Support valve seat of ball valve 3 Ball valve 31 Water passage of ball valve 32 Fitting of ball valve for fitting rotation axis Recess 33 Insertion hole for inserting plate-shaped rotary valve 4 Rotating shaft of ball valve 41 Cap nut 42 Ball valve operating handle 43 Cap nut 44 Insertion hole for inserting rotary operation shaft 45 Packing 46 Stopper 5 Plate-shaped rotation Valve 51 Rotating operation shaft 52 Plate-shaped valve body 53 Seat of plate-shaped valve body 54 Fitting groove of driver 55 Plate surface of plate-shaped valve body 56 Packing a Ball valve in conventional example b Water passage of ball valve in conventional example c The support valve seat of the ball valve in the conventional example d The sharp portion of the ball valve water passage in the conventional example e The narrowed portion of the water passage in the conventional example

Claims (1)

(57) [Claims] 1. The tip of a semicircle in a water passage of a ball valve of a ball stopcock which is opened and closed by rotating a handle shaft by 90 degrees.
The shape is spatula-shaped, the thickness of both sides is reduced,
Rotatable plate-shaped rotation with plate-shaped curved surface
A ball stopcock with a water volume adjusting function, characterized in that the valve protrudes perpendicularly to the water channel and is operable independently of the turning operation of the ball valve.