JPH05623Y2 - - Google Patents

Description

[Detailed explanation of the invention] ...Field of industrial application The invention relates to the structure of a ball valve.
Unlike ball valves with a normal configuration, which has a handle attached to the upper end of the spindle that rotates the valve (opens and closes the valve), LPG is mainly used for automobiles. It is used as a tank take-off valve (a valve that controls gas supply from the tank to the engine).

...Problems with conventional valves Conventionally, as a take-out valve for an automobile LPG tank, the handle 1' is rotated three times and the spindle 2' directly connected to the handle 1' is screwed forward and backward to move the valve 3' against the valve seat 4'. A so-called ball valve (Fig. 4), which opens and closes the valve by contacting downward and separating upward, is used, and ball valves are not used at all at present.

In addition, due to safety regulations, the take-out valve must be operated from the outside of a full container that covers the entire tank, or a semi-container that is fixed to the tank and covers the tank valve (take-out valve, filling valve) installation location. It is mandatory.

However, with the above-mentioned conventional globe valve, when opening and closing the valve by rotating the handle on the outside of the container, it usually fully closes ← → fully opens in about 3 turns, so the handle must be turned until it can no longer be rotated due to manual adjustment. Of course, there is the problem that when operating the valve, you have no idea how much it is currently open or closed, and another serious problem is that you cannot tell whether the valve is open or closed just by looking at the handle from the outside during inspection. There was a drawback.

... Purpose and features of the present invention (1) ... In view of the above circumstances, the present invention has developed a ball valve (ball) whose opening/closing rotation angle is small and constant (usually 90°) in place of the conventional globe-shaped valve. The idea was to use a valve.

(2)... However, in the case of ball valves, it has been pointed out that, contrary to the above advantages, the valve (ball) opens even if the handle rotates slightly due to vibrations of a car, etc., so the present invention was developed. The spindle on the ball side (tank side) and the spindle on the handle side installed outside the semi-container are separated, and the separated part is equipped with a clutch mechanism. The invention is characterized in that the above-mentioned points have been successfully avoided by rotating the valve by a set angle to open and close the valve.

(3)...The present invention also provides a display (e.g., on the outside of a semi-container) that guides the degree of opening and closing of the valve (ball) as the handle is rotated.
The valve is characterized by being equipped with a display plate (display plate), which allows the operating position from idle rotation to valve opening/closing to be grasped at a glance.

...Configuration (1)...The present invention airtightly and rotates a ball (valve) having a through hole through a seat in a valve chamber of a valve body that has a through hole for connecting to gas piping, a tank, etc. In the existing ball valve configuration, in which the ball is freely stored and installed and the ball is rotated at a set angle by a spindle connected to a handle to open and close the valve, the spindle is divided into a ball-side spindle and a handle-side spindle. , a clutch mechanism is provided at the upper end of the ball side spindle and the lower end of the handle side spindle, which are opposed to each other on the same axis, for interlocking both spindles, and the clutch mechanism has a relative interlocking structure between the upper end of the ball side spindle and the lower end of the handle side spindle. Depending on the setting angle of the handle side spindle and the setting angle of both spindles (valve opening/closing rotation)
It is also characterized by an indication on the handle mounting surface at a position corresponding to the handle circumference that guides the free rotation angle of the handle side spindle and the co-rotation angle of both spindles (valve opening/closing angle). This is a ball valve with a clutch mechanism.

(2)...Next, an embodiment of the present invention will be explained with reference to Figs. 1 to 3. In the valve chamber 7 of the valve body, which is provided with through holes 5 and 6 connected to gas piping, tanks, etc. , a spindle 2 in which a ball (valve) 3 having a through hole 8 is airtightly and rotatably housed through a seat 4, and the ball 3 is connected to a handle 1;
In the ball valve of the existing configuration, in which the valve is opened and closed by rotating at the same set angle at A clutch mechanism C is provided at the upper end and the lower end of the spindle 2b for interlocking both the spindles 2a and 2b.

The clutch mechanism C has a relative interlocking structure between the upper end of the spindle 2a and the lower end of the spindle 2b.
The set angle free rotation of the spindle 2b and the set angle rotation of both spindles 2a and 2b (valve opening/closing rotation) are performed. In the illustrated example, the arm 9 is fixed to the upper end of the spindle 2a, and the lower end of the spindle 2b is For example, an arm 11 with an engaging pin 11a is fixed to the lower end of a spindle 2b attached to a semi-container 10 (mounting surface) of an automobile LPG tank, and the arms 9 and 11 are installed relative to each other on a coaxial line to form a clutch mechanism C. The setting angle free rotation of the handle 1, that is, the spindle 2b (illustrated example, approx.
150°), the engagement pin 11a collides with the arm 9 and rotates at the same set angle (valve opening/closing rotation, example, 90°)
Provided so that

Note that the set rotation angle of the spindle 2a, that is, the opening/closing rotation angle of the ball 3 (valve) is determined by the collision of the cam plate 12 formed in a part of the spindle 2a with the stopper pin 14, although the detailed configuration will not be disclosed. 90° rotation is regulated.

In addition, the free rotation angle of the spindle 2b (in the illustrated example, approximately
150°) and the rotation angle of both spindles 2a and 2b (valve opening/closing angle, example 90°)
Add 3. The display 13 is, for example, a display plate fixed to the mounting surface 10.

...Function (1)...For example, the ball valve of the present invention can be used for automotive LPG.
When the handle 1 installed in the tank and attached to the outside of the semi-container is rotated in the valve opening direction according to the display 13, after rotating approximately 150 degrees, the engagement pin 11a of the arm 11 collides with the arm 9. Afterwards spindles 2a and 2b rotate at the same time (ball 3 also rotates at the same time)
Then, when the valve rotates 90 degrees, the valve becomes fully open.

(2)...Conversely, when the valve is rotated from the fully open state to the valve closing direction, the arm 9 rotates approximately 150° and then
However, the engagement pin 11a of the arm 11 collides with the spindles 2a and 2b, and the spindles 2a and 2b rotate simultaneously through 90 degrees, completely closing the valve.

(3) The handle can be stopped freely during the above-mentioned free rotation or during the same rotation, and its position can be immediately grasped by looking at the display 13.

...Effect (1)...It uses a ball valve, and the ball valve has an operating angle (ball rotation angle) for opening and closing the valve.
is fixed at, for example, 90 degrees, so unlike conventional globe valves, the opening/closing degree of the valve (ball) can be accurately determined from the outside based on the position of the handle.

(2)...The spindle that operates the valve opening and closing by rotating the valve (ball) at a set angle is divided into a ball side and a handle side, and a clutch mechanism is provided in the divided part, and the clutch mechanism is configured to operate at a set angle of the handle. After free rotation, both spindles work together to rotate the set angle at the same time (valve opening/closing rotation), so even if the handle rotates slightly due to vibrations, which was a problem when using ball valves, the valve will not rotate. The problem of opening can be solved by setting the free rotation angle, and a safe and accurate ball valve can be provided as a take-out valve for an automobile LPG tank.

(3)...In addition, by configuring the spindle separately and providing a clutch mechanism as described above, the valve body side and handle side can be installed separately, for example, on the tank side and on the outside of the container, and the two can be linked by the clutch mechanism. This has the advantage that the take-out valve can be easily installed.

(4) Because of the ball valve and the clutch mechanism, the rotation angle of the handle can be set to a set angle. By attaching a display plate that guides the free rotation and rotation angles, and operating the handle according to the display, you can operate the handle safely and accurately without making mistakes, and at the same time, you can operate the handle by looking at the display and the handle position. It has the characteristics that the condition can be immediately known and inspection can be performed extremely accurately and easily, which can greatly contribute to improving safety.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of an embodiment of a ball valve with a clutch mechanism of the present invention, FIG. 2 is an explanatory diagram of the operation of the clutch mechanism, FIG. 3 is an explanatory diagram of the operation of the handle and the display, and FIG. 4 is a cutaway front view of a conventional ball valve.
2a: ball side spindle, 2b: handle side spindle, 3: ball (valve), 4: seat, 5, 6: through hole, 7: valve chamber, 8: through hole, 9: arm, 10: mounting surface (semi-container), 11: arm, 11a: engagement pin, 1
2...cam plate, 13...display, 14...stopper pin.

Claims (1)

[Scope of Claim for Utility Model Registration] A ball (valve) having a through hole is hermetically and rotatably housed in a valve chamber of a valve body equipped with a through hole for connecting to gas piping, a tank, etc., through a seat. In the existing ball valve configuration, in which the ball is installed and rotated at a set angle by a spindle connected to the handle to open and close the valve, the spindle is divided into a ball side spindle and a handle side spindle, and the ball is rotated on the same axis. A clutch mechanism is provided at the upper end of the ball-side spindle and the lower end of the handle-side spindle, which are opposed to each other on a line, for interlocking both spindles. , the set angle of the spindle on the handle side is freely rotated, and the set angle of both spindles is rotated at the same time (valve opening/closing rotation).In addition, there is a reversing angle and the reverse angle of the handle side spindle on the handle mounting surface at a position corresponding to the handle circumference. A ball valve with a clutch mechanism, characterized by an indication that guides the rotation angle of both spindles (valve opening/closing angle).