JPH0442630Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the structure of a handle portion of a valve having a rotation range regulating mechanism and a valve opening degree indicating mechanism.

[Prior Art] Figures 4 and 5 show a conventional valve handle. That is, the illustrated valve is
A handle shaft 53 is screwed onto the inside of the bonnet 52 of the valve portion, on which the threaded mounting portion 51 of the lock nut 50 is formed on the outside. The handle shaft 53 cannot be rotated.
The handle wheel 5 also has a stem 55 that is movable in the axial direction, and the handle wheel rotation range regulating mechanism and valve opening display mechanism are provided with the handle wheel 5.
Attached to 4 parts.

The handle wheel rotation range regulating mechanism is fixed to the upper end of the stem 55 in a non-rotatable manner, is disposed in a recess 56 formed in the upper part of the handle wheel 54, and has a guide groove 57 for regulating the rotation range of the handle wheel. The spring pin 5 on the handle wheel 54 side that engages with the plate 58 and the guide groove 57
It consists of 9.

In addition, the valve opening display mechanism includes a rotation range regulating plate 58.
A plate plate (valve opening indicator) having a through hole 61 in a part of which is fixed to the corresponding handle wheel 54 is a valve opening indicator plate (valve opening indicator) 60 disposed on the top surface that displays the valve opening indicator. It is composed of an instruction section) 62, etc. 63 is a transparent cover.

[Problems to be solved by the invention] By the way, this type of valve is mounted by inserting the bonnet 52 into the mounting hole of the mounting panel and tightening the lock nut 50, which is a so-called panel mount. In some cases,
Since the handle wheel 54 cannot be attached to the valve unless the handle wheel 54 is first removed from the valve, the bonnet 52 is inserted into the mounting hole of the panel, and then the handle wheel 54 is assembled to the valve, the handle wheel 54 is made detachable from the handle shaft 53. . That is, the handle wheel 54 is removably fixed to the handle shaft 53 by a set screw 64, and the tip of the stem 55 is machined to have a different diameter.
This is inserted into a mounting hole 65 having a different diameter at the center of the rotation range regulating plate 58, and the two are loosely fitted in consideration of later assembly. Therefore, by loosening the set screw 64 and pulling out the handle wheel 54, the handle wheel 54 can be easily disassembled from the valve.

However, this conventional handle structure poses problems in assembling the handle during panel mounting. When assembling the handle wheel 54,
It is necessary to fit the handle wheel 54 and the handle shaft 53 and the stem 55 and the rotation range regulating plate 58, but it is difficult to fit the two at the same time, and it is difficult to fit the handle wheel 54 and the handle shaft 53. Even if it is easy, there is a problem that it is particularly difficult to fit the rotation range regulating plate 58, which is not fixed and moves freely within the handle wheel 54, and the stem 55, and the assembly efficiency is low.

In addition, since the stem 55 and the rotation range restriction plate 58 are loosely fitted and have play, the valve opening degree indicating part 60 fixed to the rotation range restriction plate 58 when operating the handle is
There is also the problem that the display is misaligned between the valve opening degree indicating section 62 on the handle wheel 54 side.

The present invention solves these conventional drawbacks.The handle wheel can be easily disassembled and assembled, and the panel mount is easy to work with.It also allows the valve opening to be adjusted without causing deviations in the valve opening display. The purpose is to provide a valve handle structure that can accurately display the

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a handle shaft 12 on the inside of the bonnet 5 of the valve portion, on the outside of which the threaded mounting portion 5a of the lock nut 14 is formed.
A handle wheel 15 is removably fixed to the handle shaft 12, and a stem 10 is provided within the handle shaft 12, which cannot be rotated but is movable along with the handle shaft 12 in the axial direction. In a valve in which the valve is controlled by moving the stem 10 in its axial direction by rotational operation, a mounting hole 17 of the handle shaft 12 is provided at the center of the handle wheel 15, and a mounting hole 17 and a bonnet 5 are provided at the upper part thereof. A stopper projection 2 protrudes from the inner wall side of the core hole 18 at the upper end of the stem 10, which is bored through a core hole 18 having an inner diameter smaller than the outer diameter of the lock nut screw attachment part 5a and projects into the core hole.
A rotation range regulating member 19 that is locked at a predetermined position by 2 and restricts the rotation range of the handle wheel 15.
A valve opening indicating section 25 corresponding to a valve opening indicating section 28 provided on the handle wheel 15 side is provided at the upper end of the rotation range regulating member 19.

[Function] The rotation range regulating member 19 is fixed to the upper end of the stem 10 and is accommodated in the core hole 18 having an inner diameter smaller than the mounting hole 17 of the handle shaft 12 bored in the center of the handle wheel 15. axis 1
2 and the handle wheel 15 and remove the handle wheel 15 from the handle shaft 12.
The rotation range regulating member 19 and the valve opening degree indicating section 25 remain fixed to the upper end of the stem 10 on the valve section side. In order to mount it on a panel, the rotation range regulating member 19 is smaller than the outer diameter of the lock nut threaded part 5a of the bonnet 5, so it can be set on the panel in that state, and then the handle wheel 15 can be assembled. The handle wheel 15 and the handle shaft 12 may be fitted and fixed together.

[Embodiments] Hereinafter, embodiments of the present invention will be described with reference to the drawings of FIGS. 1 to 3.

FIG. 1 shows a valve according to an embodiment of the present invention,
In the figure, 1 is a body, 1a is an inlet, and 1b is an outlet. Further, 2 is a disk attached to the disk holder 3 and opens and closes the valve seat 1c, 4 is a diaphragm flange, 5 is a bonnet, 6 is a bonnet nut that is screwed onto the upper part of the body 1 to fix the diaphragm flange 4 and the bonnet 5, and 7 is a bonnet nut. A diaphragm retainer, 8 is a diaphragm, 9 is a screw provided at the bottom of the stopper part 11 shown below and holds the diaphragm retainer 7 and screwed onto the disk holder 3, 10 is a stem (valve stem), 11 is a screw provided at the bottom of the valve stem, and a lower part 11a is an O-ring, and 12 is a bonnet 5 with a stem (valve rod) 10 inserted inside.
Handle shaft (sleeve) screwed inside of 13
14 is a lock nut screwed onto the mounting portion 5a on the outer periphery of the bonnet 5 for mounting the valve device; 15 is a set screw attached to the upper end of the handle shaft 12; 16
It is a handle wheel that is removably fixed in place.

A rotation range regulating mechanism and a valve opening degree display mechanism for the handle wheel 15 are disposed within the handle wheel 15. In detail below, in the center of the handle wheel 15 there is a handle shaft 1 at the bottom.
2 mounting holes 17 are drilled in the upper part, and the inner diameter of the bonnet 5 is smaller than the inner diameter of the mounting holes 17.
A core hole 18 having an inner diameter smaller than the outer diameter of the lock nut screw attachment part 5a is bored, and a recess 19 is formed in the upper part. Mounting hole 1 of this handle wheel 15
The upper end of the handle shaft 12 is inserted into the hole 7 and fixed with a set screw 16, and the handle shaft 12 is inserted into the core hole 18.
The upper end portion 10a of the stem 10 is arranged to pass through the inside and protrude from the upper end thereof. Further, a member 19 is disposed on the upper end portion 10a of the stem 10, which is fixed with a set screw 20 and restricts the rotation range of the handle wheel 15. This member 19 has a protrusion 21 on a part of the outside of the cylindrical body, and this protrusion 21 is located on the handle wheel 15 side and has a stopper protrusion 22 consisting of a screw that protrudes from the inner wall of the core hole 18 into the hole. The handle wheel 15 is engaged at a predetermined rotational position. Note that since the rotation range regulating member 19 is housed in the core hole 18, the outer diameter of the lock nut screw attachment portion 5a of the bonnet 5 is smaller than the outer diameter even including the protrusion 21 thereof. 23 is a thrust ring disposed in the upper recess 12a of the handle shaft 12, 24a is a bearing, and 24b is a plate spring washer.

Further, 25 is a valve opening degree indicating section fixedly disposed on the upper surface of the rotation range regulating member 19, and in this case, it is a plate with a pointer displayed on its surface. Also 2
Reference numeral 6 denotes a cover disposed in the recess 19 on the upper surface of the handle wheel 15, and a see-through portion 27 is provided in the center of the cover.
It has a valve opening degree indicating part 28 on its outer periphery. In this case, the valve opening degree indicating section 28 indicates letters such as "O" which means the valve is open, and "S" which means the valve is closed. Specifically, characters are printed on the back side of the transparent plate.

Note that this cover 26 has a cover function and a valve opening indicating function, but these may be provided separately. That is, it may be constructed of, for example, a plate with a through hole in the center and an index displayed around the hole, and a transparent plate laminated on top of the plate. Further, the relationship between the valve opening degree indicating sections 25 and 28 consisting of the pointer and the display can be reversed.

When mounting the valve on a panel, for example, the handle wheel 15 is turned to the valve closed position, the set screw 16 is loosened, the handle wheel 15 is removed from the handle shaft 12, and the valve is set on the panel. Then, align the valve opening indicator 25 on the valve side and the valve opening indicator 28 on the handle wheel 15 side in the same valve closed position as when disassembling, and fit the mounting hole 17 of the handle wheel 15 into the handle shaft 12. It can be easily assembled by tightening and fixing with the fitting screws 16.

[Effects of the invention] As described above, in the handle with valve opening degree display of the invention, the rotation range regulating member is fixed to the stem, and the handle wheel can be removed from the handle shaft in that state, so that the handle wheel can be removed from the handle shaft. When assembling after disassembling from the valve side, there is only one fitting part between the handle wheel and the handle shaft, so there is no need to fit the stem and rotation range regulating member at the same time as in the past, making assembly easier. Work becomes easier. In addition, since the rotation range regulating member and the stem are not simply loosely fitted and prevented from rotating as in the conventional case, but are fixed, there is no deviation in the valve opening display, and accurate valve opening display is possible.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of a valve according to an embodiment of the present invention, FIGS. 2 a and b are plan views of part A in FIG. 1,
FIG. 3 is a partial sectional view of FIG. 1, FIG. 4 is a partial sectional view of a conventional valve, and FIG. 5 is a perspective view of a rotation range regulating plate and a stem. 5... Bonnet, 5a... Bonnet lock nut screw attachment part, 10... Stem, 12...
Handle shaft, 14... Lock nut, 15... Handle wheel, 17... Mounting hole, 18... Core hole, 19... Rotation range regulating member, 21... Projection, 22... Stopper projection, 25, 28 ...Valve opening indicator.

Claims (1)

[Scope of utility model registration request] A handle shaft is screwed onto the inside of the bonnet of the valve part, which has a threaded mounting part for the lock nut formed on the outside, and a handle wheel is removably fixed to the handle shaft, and the handle shaft cannot be rotated inside the handle shaft. In the valve, the valve is provided with a stem movable in the axial direction thereof, and the valve is controlled by moving the stem in the axial direction by rotation of the handle wheel, and the valve includes a mounting hole in the center of the handle wheel following the mounting hole of the handle shaft. A core hole having an inner diameter smaller than the outer diameter of the mounting hole and the lock nut screw mounting portion of the bonnet is bored in the upper part of the stem, and the upper end of the stem that protrudes into the core hole projects from the inner wall side of the core hole. A rotation range regulating member is disposed that is locked at a predetermined position by a stopper protrusion to regulate the rotation range of the handle wheel, and a valve opening degree indicating portion provided on the handle wheel side at the upper end of the rotation range regulation member. A valve handle structure characterized by being provided with a corresponding valve opening degree indicating section.