JPH0117745Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a valve opening/closing method in which a slidable mounting part is fitted to a valve opening/closing operating handle, and then a long hole formed in the operating handle is locked to fix the position of the mounting part and the operating handle. Regarding the fixed operation of the operating handle.

Traditionally, valves have been opened and closed by manual operation of a handle connected to the valve stem, which can lead to problems caused by erroneous operation due to lack of operator awareness of how to operate the handle, or malfunction of the handle due to unexpected contact between the handle and the operator. was occurring frequently. Therefore, depending on the type of fluid sent through the valve, there is a risk of an explosion occurring, which is extremely inconvenient from the standpoint of safety.

This invention was developed in view of the above circumstances, and the purpose is to provide a fixing device for a valve opening/closing operation handle that can be fixed in both the open and closed positions to improve safety. This is what I did.

An embodiment of this invention will be described based on FIGS. 1 to 6.

A is a one-way ball valve, and its internal passage B
In this structure, the upper part of the valve shaft D, which is connected to the ball disk C arranged in the upper part, passes through the operating handle H and is screwed into the hexagonal nut E, and the operating handle H is clamped on the valve body F by tightening the hexagonal nut E. By horizontally rotating the ball disk C, the ball disk C is simultaneously rotated to open or close the valve.
Further, S is a stopper, which is a projection 16 projecting from the tip 15 of the operating handle H or this tip 1.
By contacting the side surface G of the ball valve A at an appropriate angle, it is possible to restrict over-rotation of the operating handle H (counterclockwise in FIG. 2) and to determine the accurate open and close positions of the ball valve A. , is provided protrudingly on the valve box F.

As shown in FIG. 1, the fixing device for the valve opening/closing operation handle of the present invention provided on the ball valve A having the above structure includes a long hole 1 formed in the vertical direction of the operation handle H and both ends of the long hole 1. A key hole 2 communicating with each other is formed in the upper part and a round hole 3 is formed in the lower part, and a recess 4 into which the operating handle H is inserted is formed.
The long hole 1 is inserted into the screw hole 6 formed in the mounting portion 5 having a
By screwing in the screw 7 passing through the valve box, the mounting portion 5 is fitted to the operating handle H so as to be able to slide up and down, and furthermore, as shown in FIG. When the mounting part 5 is slid downward along the operating handle H, a set of legs 10 formed below the mounting part 5,
11 engages and locks with the locking piece 8 or 9, respectively, and at the same time the keyhole 2 is positioned above the mounting portion 5. Therefore, Nucle 1 of Lock 12
3 is inserted into the keyhole 2 and locked, the upper end surface 14 of the mounting portion 5 is held down by the knuckle 13, while the lower legs 10, 11 engage and lock with the locking pieces 8, 9 for operation. The rotation of the handle H in the return direction (clockwise in FIG. 2, counterclockwise in FIG. 5) is restricted. At this time, the tip 15 of the operating handle H
The side surface G of the protrusion 16 or tip 15 that protrudes from the
Since it comes into contact with the stopper S and prevents over-rotation of the operating handle H in the open or closed position, the mounting part 5 is completely fixed in position, and at the same time, the operating handle H that fits into this mounting part 5 is also the same. Fixed in position.

Note that the keyhole 2 and the round hole 3 do not need to be provided if the width of the elongated hole 1 is sufficiently large, so they are not essential requirements for this invention. Further, in the above explanation, a ball valve has been explained, but it goes without saying that other types of valves may be used.

Next, the use of the valve opening/closing handle fixing device of this invention will be explained.

As shown in Figures 2 to 4, when moving and fixing the operating handle H to the valve opening position,
First, the recess 4 of the mounting part 5 and the operating handle H are fitted together, and then the screw 7 passing through the elongated hole 1 is screwed into the screw hole 6 of the mounting part 5 to slide the mounting part 5 onto the operating handle H. Fit and connect freely. Then, the mounting portion 5 is slid downward to the lowest position, that is, until the screw 7 is located inside the round hole 3. Then, the legs 10 and 11 of the mounting part 5 engage and lock with the locking pieces 8 and 9, respectively, so that the second
Rotation in the clockwise direction in the figure is prevented. Further, since the operating handle H is also prevented from rotating counterclockwise in the figure by the stopper S, the operating handle H is fixed at this valve open position. Furthermore, when the nut 13 of the lock 12 is inserted into the keyhole 2 above the mounting part 5 and locked, the upper end surface 14 of the mounting part 5 is pressed by the knuckle 13 and the mounting part 5 is prevented from sliding upward. Since it is blocked, lock 12
Unless the lock is released, the operating handle H is fixed at this position and the valve remains open.

Next, rotate this operating handle H to
When fixing the valve in the closed position shown in Figs.
After pulling it out from the keyhole 2, the mounting part 5 is slid upward along the operating handle H. As a result, the legs 10, 11 are disengaged from the locking pieces 8, 9, and the operating handle H can be rotated freely.
Then, while holding the mounting part 5 in that position, the operating handle H is rotated to the valve-closed position shown in FIG. Slide it down until it is in place. At this time, the leg 10 of the mounting portion 5 is engaged with the locking piece 9, so that the return rotation of the operating handle H in the counterclockwise direction in FIG. 5 is prevented, while the stopper S and the tip of the operating handle H The contact with the side surface G of the portion 15 also prevents the operating handle H from rotating clockwise in the figure, so the operating handle H is fixed at this valve closed position. Furthermore, when the nut 13 is inserted into the keyhole 2 and the lock 12 is locked, the upward sliding of the mounting part 5 is prevented as described above, so the operating handle H is fixed in this position and the valve is closed unless the lock is unlocked. The state is maintained. In this way, the operating handle H can be easily and reliably fixed in the valve open or valve closed position.

As is clear from the above explanation, according to the valve opening/closing operation handle fixing device of this invention, the valve box F
Two locking pieces 8 and 9 are fixed to the upper part of the valve opening/closing handle H, and a long hole 1 is bored in the vertical direction of the valve opening/closing operation handle H, and the mounting part 5 has a simple structure as shown in FIG. By adding screws 7 and 7, the operating handle H can be reliably fixed in the valve open or closed position by locking and unlocking the lock 12, making it possible to operate the handle of a conventional manual valve with a small investment. It is extremely useful as it can completely eliminate the inconveniences that you have had.

[Brief explanation of the drawing]

Figures 1 to 6 are for explaining the embodiment of this invention. Figure 1 is an explanatory diagram of the installation of the mounting part and the operating handle, and Figure 2 is a plan view of the ball valve in the valve open position and the device of this invention. Figure 3 is the − of Figure 2.
A sectional view along the line, Figure 4 is a right side view of Figure 3,
FIG. 5 shows a plan view of the ball valve and the invented device in the closed position, and FIG. 6 shows a sectional view taken along the line -- in FIG. 5. 1...Long hole, 4...Recess, 5...Mounting part, 6...
...screw hole, 7... screw, 8, 9... locking piece, 10,
11... Legs, 12... Tablets, 13... Natsukuru, 1
4...Top end surface, 15...Tip, 16...Protrusion.

Claims (1)

[Scope of utility model registration request] A stopper is provided on the top of the valve box to prevent over-rotation of the valve opening/closing handle in the open and closed positions, and a protrusion that comes into contact with the stopper is provided at the tip of the valve opening/closing handle. A mounting part is provided having an elongated hole in the vertical direction of the valve and a recess into which the valve opening/closing operation handle is inserted, a screw hole is bored in the mounting part, and a screw is inserted through the elongated hole into the screw hole. The mounting part is slidably fitted to the valve opening/closing operation handle by screwing in the mounting part, and legs are formed on both sides of the mounting part, and the legs of the mounting part are engaged and locked to open and close the valve. In a structure in which a locking piece is fixedly attached to the upper part of the valve box to restrict the return rotation of the operation handle in the open position and the closed position, the nut of the lock is inserted into the elongated hole at the same time as the mounting part is slid downward. A fixing device for a valve opening/closing operation handle, characterized in that the mounting portion is fixed in position by being inserted and locked.