JPH0537107Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a manual lever device for opening and closing a valve in various valves such as a butterfly valve, which opens and closes the valve by rotating a valve body.

(Prior Art) Conventionally, in various types of valves such as butterfly valves in which the valve is opened and closed by rotating the valve body, an operating lever is attached to the outer end of the valve stem that supports the valve body, and the operation lever is attached to the outer end of the valve stem that supports the valve body. A device in which the lever is manually rotated is known.

FIG. 11 shows an example of such a manually operated lever, which is a butterfly lever in which a disc-shaped valve body 2 is rotatably supported by a valve stem 3 in a valve body 1 having a cylindrical fluid passage. The valve has a rod-shaped operating lever 4 attached to the outer end of a valve stem 3, and a lock bar 5 is arranged in parallel with the operating lever 4 so as to be able to move forward and backward, and the tip of the lock bar 5 is engaged with an opening plate 6. The lever 7 connected to the rear end of the lock bar 5 is grasped and the lock bar 5 is moved backward, and the engagement between the lock bar 5 and the opening plate 6 is released, and the operating lever 4 is moved back.
rotation is free.

In such a known manual lever device for opening and closing a valve, the lever 7 for advancing and retracting the lock bar 5 is gripped in a direction suitable for gripping from above, so that the butterfly valve is connected to the piping. If the lever 7 is mounted horizontally, the grip direction of the lever 7 will be horizontal, making it extremely difficult to operate, which is inconvenient.

(Problem to be solved by the invention) This invention attempts to solve the inconvenience in operation by making it possible to change the gripping direction of the operating lever and lock bar according to the direction in which the butterfly valve is attached to the piping. It is something.

(Means for Solving the Problems) In order to solve the above problems, the means adopted by this invention is to connect an operating lever to the outer end of the valve stem, and attach the lock bar to the tip of a lock bar that can move back and forth in parallel with the operating lever. A lock plate that engages with the opening plate is attached, and a lever is connected to the rear end of the lock bar so that the lock bar can be moved back by grasping the operating lever, and the operating lever is fixed to the outer end of the valve stem. It consists of a pointer part and a rod-shaped lever connected to the pointer part so that it can be coupled, separated and rotated freely, and the lock plate has two L-shaped lock sides that widen in accordance with the rotation angle of the operating lever. It is characterized by being

(Embodiments) Preferred embodiments of this invention will be described in detail below with reference to the drawings. Although the illustrated embodiment relates to a butterfly valve, it is not limited thereto.
It is equally applicable to various rotary valves. In the figure, reference numeral 10 denotes a valve body that defines a cylindrical fluid passage inside, and a disc-shaped valve body 11 is rotatably supported by a valve stem 12 and is attached to the inner circumferential surface of the valve body 10. The flow path is opened and closed by the contact and separation of the seat ring 13, which is an elastic sealing means, with the outer peripheral surface of the valve body 11.

The valve stem 12 extends outward from the outer peripheral surface of the valve body 10 through a valve body neck 14 extending outward, and an operating lever 15 is attached to the outer end of the valve stem 12 . The operating lever 15 has a structure divided into two parts: a pointer part 16 fixed to the outer end of the valve stem 12 and a rod-shaped lever part 17 having a required length, and the pointer part 16 is connected to the valve body neck part 14 A pointer 1 indicating the opening scale of the opening plate 18 fixed to the upper end of the
9 and a short connecting shaft 20 extending in the horizontal direction perpendicular to the valve shaft. The lever portion 17 is connected to the pointer portion 1.
It can be connected to or separated from the connecting shaft 20 of No. 6, and can be connected by rotating the connecting direction by 90 degrees. That is, as shown in FIGS. 7 to 10, a connecting hole 21 having a square cross section is formed in the connecting shaft 20 from its outer end surface, and a connecting hole 21 is formed at the tip of the lever portion 17.
A rectangular connecting rod 22 that can be freely inserted into the connecting hole 21 is formed, and the connecting rod 22 is inserted into the connecting hole 21, and both are fastened with bolts and nuts 23 to connect them. By turning the connecting rod 22 by 90 degrees as shown in FIG. 8 and engaging it in the connecting hole 21, the lever part 17 is moved from the vertical position shown in FIG. 7 to the horizontal position shown in FIG.
Can be connected with 90° rotation. The lever portion 17 is bent into an L shape slightly rearward from the connecting rod 22 at the tip.
This prevents the valve opening degree from changing when turned 90°.

A lock bar 25 extending parallel to the longitudinal direction of the lever portion 17 is attached to the lever portion 17 so as to be movable forward and backward. At the tip of the lock bar 25, there is a lock plate 27 that can be freely engaged with a notch 26 formed around the opening plate 18.
are integrally attached. The lock plate 27 is
It has two lock sides exhibiting an L-shape expanded at an angle of 90°, and one of the lock sides can be engaged with the notch 26 in response to the rotation of the lever portion 17. A lever 28 is pivotally supported at the rear end of the lock bar 25, and when the lever 28 is gripped, the lock bar 28
5 can be retracted to remove the lock plate 27 from the notch 26. The lever 28 is always biased in the open direction by a spring, and keeps the lock bar 25 in the forward state.

Figure 2 shows a state in which the control lever is also positioned in the same vertical direction as the valve stem due to the rosefly valve body being upright, and the lock bar 25 and lock plate 27 are moved back by grasping the lever 28. By removing the lock plate 27 from the notch 26, the operating lever 15 can be rotated, and the valve stem 12 can be rotated to change the opening degree of the valve body 11.

The butterfly valve is placed horizontally and therefore lever 2
If it is desired that the operating lever 15 be installed in a direction perpendicular to the valve stem direction of the rosefly valve in order to grip and operate the valve 8, as shown in FIGS.・Remove the nut 23, separate the lever part 17 from the pointer part 16, and
Rotate 90 degrees as shown in the figure and connect the two again.
Due to the 90° rotation, the lock plate 27 is rotated 90° so that the other lock side engages in the notch 26, and the locked state is restored. By turning the operating lever 15 by 90 degrees in this way, the gripping direction of the lever 28 becomes vertical, so that it becomes easy to grip the lever 28 from above. Furthermore, lever 2
Those skilled in the art will easily understand that if it is easier to operate the handle 8 by gripping it from the side, the operation lever 28 can be rotated in the opposite direction.

(Function) The operating lever is composed of two parts, a pointer part and a lever part, the pointer part is fixed to the outer end of the valve stem, the lever part is connected to and detachable from the pointer part, and the pointer part is fixed at an angle of 90°.
It can be rotated and connected freely, and an L-shaped lock plate expanded 90 degrees is attached to the tip of the lock bar.
Since either side of the lock plate can be freely engaged with the notch of the opening plate in response to the rotation of the operating lever, it can be installed in the optimum direction depending on the mounting direction of the valve body or the operating direction of the operating lever. The operating lever can be positioned with ease, and the rotating operation of the operating lever and the engaging/disengaging operation of the lock bar can be performed extremely conveniently.

(Effects of the invention) According to this invention, the installation direction of the operation lever after piping can be selected from vertical or horizontal, so that when operating the valve, the operation lever and lock bar can be firmly and comfortably held. It can be operated while holding it, and it is possible to improve the operability.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view, Fig. 2 is a side view, Fig. 3 is a plan view, Fig. 4 is a sectional view along the line shown in Fig. 2, and Fig. 5 is a state in which the operating lever is rotated 90 degrees. A side view, FIG. 6 is a sectional view taken along the line of FIG.
7 and 8 are exploded perspective views of essential parts, FIGS. 9 and 10 are side views of the same, and FIG. 11 is a side view of the conventional example. 10... Valve body, 11... Valve body, 12... Valve stem, 13... Seat ring, 14... Valve body neck, 15... Operation lever, 16... Pointer part, 17
... Lever part, 18 ... Opening plate, 19 ... Pointer,
20... Connection shaft, 21... Connection hole, 22... Connection rod, 23... Bolt/nut, 24... L-shaped bent part, 25... Lock bar, 26... Notch, 27...
...Lock plate, 28...Lever.

Claims (1)

[Scope of utility model registration request] A control lever is connected to the outer end of the valve stem, a lock plate that engages with the opening plate is attached to the tip of a lock bar that can freely move back and forth parallel to the control lever, and a lock plate that engages with the opening plate is attached to the rear end of the lock bar to be gripped between the control lever and the control lever. The operating lever is made up of a pointer fixed to the outer end of the valve stem and a rod-shaped lever connected to the pointer so that it can be coupled to, separated from, and rotated freely. A manual lever device for opening and closing a valve, characterized in that the lock plate has two L-shaped lock sides that are expanded in accordance with the rotation angle of the operating lever.