JP3026421B2 - Float valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a float valve for storing a fixed amount of liquid in a water storage tank.

[0002]

2. Description of the Related Art FIG. 4 shows an example of this type of float valve. The valve body 3 is connected to the distal end of a water supply pipe 2 extending into the water storage tank 1, and the valve body 3 a in the valve body 3 and the liquid level W. An interlocking mechanism 5 for opening and closing the valve body 3a in conjunction with the up and down movement of the float 4 is provided between the float 4 and the float 4 floating on the side of the water tank 1. An arm 5a which can swing up and down on a support member 6 fixed to the valve body 3 via a pivot shaft 7, one end of the arm 5a is turned via a pin 8 to the upper end of a valve rod 3b fixed to the valve body 3a. The other end of the arm 5a is movably connected to the lower end of a float shaft 4a fixed to the center of the float 4 via a pin 9. Reference numeral 10 denotes an overflow outflow passage formed in the water storage tank 1.

In the above configuration, the liquid is discharged from the water storage tank 1 from the state shown by the solid line in FIG.
When L lowers, the float 4 also lowers in conjunction therewith, and the arm 5a rotates clockwise about the pivot shaft 7, and the valve body 3
a is lifted and separated from the valve seat 3 c, and the liquid is supplied from the water supply pipe 2 into the water storage tank 1.

[0004] The liquid level W. When L goes up,
In conjunction with this, the float 4 rises, the arm 5a rotates counterclockwise about the pivot shaft 7, the valve body 3a is pulled down and abuts on the valve seat 3c, and the water is supplied from the water supply pipe 2 into the water storage tank 1. The liquid is no longer supplied, and a fixed amount of liquid can be stored in the water storage tank 1.

[0005]

In the above-mentioned conventional configuration,
Processing for attaching the support member 6 to the side wall of the water storage tank 1 needs to be performed, and the processing work is troublesome. In addition, it takes time and effort to connect and assemble the arm 5a to the support member 13, the float 4, and the valve body 3a on site, and the construction cost is high. Further, since the arm 5a extends in the horizontal direction, the size of the water storage tank 1 is increased.

The present invention has been made in view of the above problems, and provides a float valve that does not require processing of a water storage tank, can perform on-site work quickly and easily, and can further reduce the size of the water storage tank. It is intended to be.

[0007]

In order to achieve the above-mentioned object, the present invention provides a water supply pipe having a water supply tank.
Connect the valve body to the valve seat inside the valve body.
A valve body that contacts and separates in the downward direction, and above the valve body
Float on the liquid surface of the water storage tank at
And an interlocking mechanism that opens and closes the valve element in conjunction with
The interlocking mechanism is located above the valve body and
Positioned below and rotated by a support member attached to the valve body
It consists of a pantograph arm that supports as much as possible
The lower end of the arm is pivotally connected to the valve stem of the valve
The upper end of the shaft is rotatably pin-connected to the float shaft.
is there.

In the above construction, when the liquid level is lowered by discharging the liquid from the water storage tank, the float is lowered in conjunction with the lowering of the liquid level, the valve body is separated from the valve seat by the operation of the pantograph arm of the interlocking mechanism, and the water supply pipe is provided. Supplies the liquid into the water storage tank.

When the liquid level rises due to the supply of the liquid, the float rises in conjunction therewith, and the valve body is pulled down by the operation of the pantograph-type arm of the interlocking mechanism to come into contact with the valve seat, and the liquid flows from the water supply pipe into the water storage tank. Is not supplied, and a certain amount of liquid can be stored in the water storage tank.

In this case, the pantograph arm of the interlocking mechanism is attached to the valve body via a support member to form a unit. At the site, the valve body with the pantograph arm is connected to the tip of the water supply pipe in the water storage tank. And it is not necessary to process the side wall of the water storage tank as in the related art, so that no labor is required and the construction cost can be reduced. Further, since the pantograph-type arm is disposed above the valve body, the occupied area of the water storage tank can be made smaller than in the prior art, and the size can be reduced.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a float valve according to an embodiment of the present invention, in which a valve body 3 is connected to a distal end of a water supply pipe 2 extending into a water storage tank 1,
The valve body 3 a in the valve body 3 and the liquid level W. An interlocking mechanism 12 that can expand and contract in a pantograph manner is provided between the floating mechanism 4 and the float 4 that floats on the L. The configuration other than the above is almost the same as the conventional example shown in FIG.
The same portions are denoted by the same reference numerals and description thereof will be omitted.

The interlocking mechanism 12 will be described with reference to FIGS. 2 and 3. A substantially U-shaped support frame 14 is provided on the lower surface of the top plate of the portal-type support member 13 attached to the upper surface of the valve body 3.
Is fixed, and an intersection portion of a pair of main arms 12a and 12b arranged so as to cross each other in an X-shape is rotatably supported by the support frame 14 via a pivot shaft 15 so as to be rotatable. Both ends of a pair of upper slave arms 12c, 12d forming a parallelogram with the upper portions of the main arms 12a, 12b are connected to upper ends of the main arms 12a, 12b and lower ends of the float shaft 4a by connecting pins 16, 17 respectively. Both ends of a pair of lower sub-arms 12e, 12f which are rotatably connected via a pair and form a parallelogram with the lower part of the main arms 12a, 12b are connected to the lower ends of the main arms 12a, 12b and the valve stem. It is rotatably connected to the upper end of 3b via connecting pins 18 and 19, respectively.

When the float valve is installed in the water storage tank 1, the arm 12 a
What is necessary is just to insert the valve main body 3 to which the 〜12f is attached into the water storage tank 1 and connect the valve main body 3 to the distal end of the water supply pipe 2.

In this case, there is no need to perform a process for attaching the arms 12a to 12f to the side wall of the water storage tank 1 as in the conventional case. Further, since the valve body 3 and the pantograph arms 12a to 12f are unitized via the support member 13, it is only necessary to connect the valve body 3 to the front end of the water supply pipe 2 in the water storage tank 1 at the site. Well, on-site work can be performed quickly and easily. Further, the arm 12a
-12f are arranged above the valve body 3,
The occupied area of the water storage tank 1 can be reduced as compared with the related art, and the size can be reduced.

In the above arrangement, the liquid is discharged from the water storage tank 1 from the state shown by the solid line in FIG.
When L is lowered, the float 4 is also lowered in conjunction therewith, the arms 12a to 12f of the interlocking mechanism 12 are reduced in a pantograph manner in the vertical direction, and the valve body 3a is raised and separated from the valve seat 3c (FIG. The liquid is supplied from the water supply pipe 2 into the water storage tank 1.

The liquid level W. When L goes up,
In conjunction with this, the float 4 also rises, the respective arms 12a to 12f of the interlocking mechanism 12 extend in a pantograph manner along the up and down direction, the valve body 3a is pulled down and comes into contact with the valve seat 3c, and the water is stored from the water supply pipe 2. The liquid is no longer supplied into the tank 3, and a fixed amount of liquid can be stored in the water storage tank 1.

[0017]

According to the present invention, the pantograph-type arm of the interlocking mechanism is mounted on the valve body via the support member to form a unit. At the site, the valve body with the pantograph-type arm is placed in the water storage tank. It is only necessary to connect to the end of the water supply pipe, and it is not necessary to process the side wall of the water storage tank as in the conventional case. Therefore, it is possible to reduce labor and cost. Further, since the pantograph-type arm is disposed above the valve body, the occupied area of the water storage tank can be made smaller than in the prior art, and the size can be reduced.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a float valve according to an embodiment of the present invention.

FIG. 2 is an enlarged front view of the main part.

FIG. 3 is a longitudinal sectional view of the main part.

FIG. 4 is a partially cutaway front view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water storage tank 2 Water supply pipe 3 Valve main body 3a Valve body 4 Float 12 Interlocking mechanism 12a-12f Pantograph arm

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F16K 31/24 E03B 11/00 F16H 21/10

Claims (1)

(57) [Claims] 1. A water supply pipe extending into a water storage tank at a distal end thereof.
Connect the valve body to the valve seat inside the valve body.
A valve body that contacts and separates in the downward direction, and above the valve body
Float on the liquid surface of the water storage tank at
And an interlocking mechanism that opens and closes the valve element in conjunction with
The interlocking mechanism is located above the valve body and below the float.
And can be rotated by the support member attached to the valve body
Consists of a pantograph-type arm supported below the arm
The end side is rotatably pin-connected to the valve stem of the valve body, and
A float valve characterized in that the end side is rotatably pin-connected to a float shaft .