JPS59147170A - Fluid valve - Google Patents

Abstract

PURPOSE:To obtain a fluid valve of ball valve type having a flow regulating function, by drilling a flow path, having a sectional area in the upstream side larger than that in the downstream side, in a ball valve and slidably providing a valve body pressed to the upstream side by a spring. CONSTITUTION:The sectional area of a flow path 10 in its upstream side is spread wider than that in its downstream side, and a valve body 11, positioned in the inside of the upstream side of the flow path, is pressed by a spring 12 toward the upstream side under the condition such that a pressure receiving face 11b of the valve body 11 is faced to a plug screw 1b. That is, plural ribs 13a in the centripetal direction are integrally molded with a supporting ring 13 screwed to the outlet end of a ball valve 2, and the point end of a guide bar 14 supported to the center of the flow path by said ribs 13a is inserted into a center hole 11a of the valve body 11. If a pressure in the upstream side increases higher, the valve body 11, forcing the spring 12 to be contracted and moving rightward, causes the flow path area to decrease narrower, while if the pressure in the upstream side decreases lower, the valve body 11, moving leftward, causes the flow path area to increase wider, thus a flow in the downstream side can be held to an almost fixed amount.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ball valve type fluid valve, and particularly to a fluid valve having a flow rate adjustment function.

As is well known, in the water supply system,
Ball valve-type water stop valves are used to deal with water pipe heating accidents, but in recent years, due to the diversification of water pipe systems and water conservation, even if the upstream pressure changes, the downstream There is an increasing demand for keeping the flow rate on the side substantially constant. Conventionally,
In order to meet these demands, measures have been taken such as incorporating a flow rate regulating valve consisting of a variable orifice etc. on the downstream side of the water stop valve. Therefore, equipment costs are high.

In order to solve the conventional problems as described above, the present invention aims to obtain a ball valve type fluid valve having a flow rate adjustment function. In a fluid valve that opens and closes the ball valve from the outside using a spindle connected to the ball valve, the ball valve is provided with a passage having a larger cross-sectional area on the upstream side than on the downstream side, and the same flow We propose that a guide rod be supported at the center of the channel, a valve body pushed upstream by a spring be movably supported by the guide rod, and the flow rate be adjusted by the position of the valve body receiving upstream pressure. It is something.

Hereinafter, details of embodiments of the present invention will be explained with reference to the drawings.

FIG. 1 shows a fluid valve according to a first embodiment of the present invention, in which a base material l coupled to a fluid pipe (not shown) is screwed and fixed to a cylindrical sleeve 1a and both ends of this sleeve 1a. Plug screw lb.

It consists of an IC. That is, the plug screw 1b is connected to the upstream side of the fluid pipe, and the plug screw 1c is connected to the downstream side of the fluid pipe, and a seal ring on which the ball valve 2 is seated is attached to the inner end of the plug screw 1b. 3.4 respectively.

Further, the sleeve 1a is formed with a diametrical hole 5, in which a spindle 7 having a protrusion 7a connected to a slot 6 of the ball valve 2 is rotatably positioned. An external operating handle 8 is attached to the outer end 7bK of the spindle 7 with a nut 9, so that the ball valve 2 can be opened and closed by manually operating the external operating handle 8.

A passage 10 is penetrated through the inside of the ball valve 2 and can communicate between the plug screw 1b and the plug screw IC. The cross-sectional area of the flow path 10 is larger on the upstream side than on the downstream side, and the flow path 10 is placed inside the upstream side facing toward the screw 1b.
It is located inside the pipe and is pressed toward the upstream side by a spring 12. That is, the support ring 13 screwed onto the outlet end of the ball valve 2 has a plurality of lips 1 in the centripetal direction.
3a is integrally molded, and the tip of the guide rod 14 supported at the center of the flow path by the rib 13a is connected to the center hole 11 of the valve body 11.
inserted into a.

As is clear from the above efforts, in the fluid valve of the present invention, when the pressure upstream of the fluid valve /Ill becomes low,
When the spring 2 is compressed, the valve body 11 moves to the right, which narrows the flow path area. Also, when the pressure on the upstream side of the fluid valve decreases, the valve body 11 moves to the left, reducing the flow. Since the road area is expanded, the flow meter on the downstream side can be kept approximately constant.

Of course, the fluid valve of the present invention is of much more durable construction than conventional variable orifice type flow metering valves.

According to the present invention, the construction cost is much lower than the conventional method in which a flow meter adjustment valve separate from the fluid valve is incorporated into the pipe, and the plastering and circumference adjustment is possible. Since the inside of the ball valve is used as the space for incorporating the valve, the overall size can be reduced.
It can also be easily installed in locations with spatial restrictions.

[Brief explanation of the drawing]

FIG. 1 is a new view of a fluid valve according to the present invention. 1...Base metal, 2...Ball valve, 7...Spindle, 8...External-1 electronic operation/% n)" A
/, 10...flow path, 11... valve body, ]
2... Spring, 14... Guide keyaki. Patent applicant: Roku Giken Co., Ltd.

Claims (1)

[Claims] 1) In a fluid valve in which a ball valve is located in a base material connected to a fluid pipe, and the ball valve is opened and closed from the outside by a spindle connected to the ball valve, the ball valve is located on the upstream side rather than the downstream side of the ball valve. A channel with a large cross-sectional area is bored, a guide rod is supported at the center of the channel, and a spring is attached to the guide rod to connect the upstream 11I1.
1. A fluid valve characterized in that a valve element pushed in position 1 is movably supported, and the flow rate is adjusted depending on the position of the valve element which receives upstream pressure.