JPS6022233B2 - Operation structure for valve opening/closing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a rotary handle for manual operation and a drive mechanism that are interlocked and connected to a rotary shaft for valve opening/closing operation, and that the handle is slid onto a rotary support shaft that rotates integrally with the rotary shaft. A portion around the outer periphery of an elastic plate-shaped piece that can be freely and relatively rotatably drummed, and that coughs together and separates from the coughing protrusion provided on the spinal column by forward and reverse movement along the axis of the spindle. is attached to the handle, and when the handle slides forward and backward, the plate-like piece is elastically deformed in the direction of the center of the support axis relative to the handle and pressed so as to be pushed over the support. The present invention relates to a valve opening/closing operation structure provided on a shaft so as to be able to connect and disconnect the handle and the rotating shaft.

The valve opening/closing operation structure described above allows the valve opening/closing operation to be performed using either the handle or the drive mechanism, while avoiding the risk of the handle rotating unnecessarily when the valve is opened/closed by the drive mechanism. In addition,
The configuration for this purpose can be achieved with a simple structure that effectively utilizes plate-like pieces.

However, in the past, as shown in FIG. 7 (see Jikko No. 57-66034), the plate-shaped piece 31 is elastically deformed about the attachment part A to the handle 32 while passing over the locking part 33. However, in this case, the amount of movement L of the handle 32 required to move the locking part 33 over the line tends to be large, and therefore the handle 32 must be moved over a large range. There are disadvantages in terms of operation and disadvantages in that the overall structure becomes large in order to support the handle 32 so that it can be moved over a large range, and after the locking portion 33 is moved over, the plate-shaped body 31 is locked. Part 3
3 and the handle 3.
2 also had the disadvantage that it slid unnecessarily over a large range.

An object of the present invention is to reduce the amount of movement of the handle necessary to move the locking portion over the ridge by simple modification.

A characteristic configuration of the present invention is that a pair of receiving seats are positioned on both sides of the plate-like piece so as to receive and support the inner periphery side of the plate-like piece when the plate-like piece passes over the locking part. is located at a point protruding inward from the outer periphery of the handle.

Next, the effects of the characteristic configuration of the present invention will be described.

In other words, since the plate-like piece is elastically deformed using the portion near the inner peripheral edge, which is received and supported by the catch, as a fulcrum to move the plate-shaped piece over the locking part, the handle length required to move the locking part over the line is reduced. The amount of movement can be minimized, and as a result, the handle only needs to be moved within a small range, improving operability, and if the handle is supported so that it can be moved within a small range. This makes it possible to reduce the size of the overall structure, and furthermore, ``After the locking part has been passed over, the gap between the plate-shaped body and the locking part is made as small as possible, so that the handle does not become stuck. It is also possible to prevent the slide from moving as much as necessary.

As a result, we have achieved a valve opening/closing operation structure that avoids the disadvantages of the conventional structure described above and can be used more favorably.

Next, embodiments of the present invention will be described based on the drawings.

As shown in FIG. 1, a disc-shaped valve body 2 is provided to open and close a flow path in a valve box 1, and a pair of upper and lower valve stems 3a, 3b are rotatably supported in the valve box 1. A deceleration case 4 equipped with a worm deceleration mechanism for rotating the upper valve stem 3a.
is fixed to the valve box 1, and a valve opening/closing operation part 5 is attached to the reduction case 4 to form a butterfly valve.

As shown in FIG. 2, the valve opening/closing operation section 5 is configured by making the output shaft 6 of the electric motor M protrude to both sides of the motor case 7, and connecting the output shaft end to the rotating shaft for valve opening/closing operation. 8, the rotary shaft 8 is connected to the worm wheel of the worm deceleration mechanism so that it can be operated in forward and reverse directions, and the other part of the output shaft 6 is connected to a rotary handle for manual sardine operation. 9, and is further provided with a clutch mechanism C for connecting and disconnecting the handle 9 and the rotating shaft 8, as will be described later. In addition, by disconnecting the handle 9 from the rotation shaft 8, the risk of the handle 9 rotating unnecessarily when the fin motor M is operated can be avoided. As shown in FIGS. 3 to 5, in configuring the clutch mechanism C, the handle 9 is connected to the rotary support 1.
Kawako, the outer drum can be slid freely and rotated freely,
The outer periphery of each of the two fan-shaped elastic plate pieces 11 is
The two cylindrical cough projections 12 are connected to the handle 9 by bolts so as to be integrally rotatable and integrally slidable, and the plate-shaped pieces 11 engage and disengage by forward and reverse movement along the supporting axis 0 direction. Concave portion 141 of the segmental body 13 with the support shaft 1 and the outer drum
In this engaged state, both the protrusions 12, 12 and the cylindrical body]
3, and the support 1Q' is fixed to the support shaft 10 so as to be integrally rotatable with a bolt 15 passing through this, and the inner peripheral edge portion of the plate-shaped piece 11 is locked and supported so as to maintain the above-mentioned cross-over state. At the same time, as the handle 9 slides in the forward and reverse directions, the plate-shaped piece 11 is elastically deformed in the direction of the spindle axis relative to the handle 9, and is pressed so as to cross over the shaft. , a stopper 17 that is integrally formed on the cylindrical body 13 and that receives and restricts the range of movement of the handle 9 toward the axial end in the acid-coupled state; Further, a stopper 8 for receiving and regulating the range of movement of the handle 9 toward the motor case 7 in the disengaged state is comprised of an outer wall portion of the motor case 7 that receives the post of the handle 9. There is.

In short, the suitable plate-like piece 11 was not only used as a material for coughing and releasing, but also effectively used as a member for maintaining the coughing state.

The clutch mechanism C has a simple structure. and,
When the plate-like piece 11 passes over the locking part 16, the plate-like piece 11
The plate-shaped piece 1 is placed so as to receive and support the side surface near the inner peripheral edge of
A pair of seats 19, 19 located on both sides of the handle are provided so as to protrude inward from the outer periphery of the handle in a state where they are tightened together with the plate-like piece 11. The locking portion 16 is configured to be elastically deformed using a portion of the inner circumference closer to the green side received and supported by the receiving seats 19, 19 as a fulcrum, and to allow the locking portion 16 to pass over the front. As shown in FIG. , 19 is also elastically deformed in the direction of the support shaft b, so that the length of the portion of the plate-like piece 11 that protrudes from both receiver seats 19, 19 as a whole is shortened. It is configured so that it can be elastically deformed, and moreover, it can be elastically deformed in a state where no large bending stress is applied locally.

In short, the amount of movement 1 of the handle 9 required to move the locking portion 16 beyond the center is determined by the point that the plate-like piece turtle 1 is elastically deformed using a portion near the inner peripheral edge as a fulcrum, and the two receiving seats 19, 19 of the plate-like piece 11 The inner portion can also be made smaller by elastically deforming it in the direction of the spindle axis, and stress concentration on the plate-like piece 11 is prevented.

Next, another embodiment will be described based on FIG. 6. The seats 20, 20 are constructed in a flat plate shape to facilitate manufacturing.

In carrying out the present invention, various types of drive mechanisms such as an electric motor, a fluid pressure cylinder, a fluid pressure motor, etc. can be used as the drive mechanism M.

If necessary, a clutch mechanism may be provided to connect and disconnect the drive mechanism M and the rotating shaft 8. or,
The valve opening/closing operation structure of the present invention can be applied to butterfly valves, other rotary type valves such as ball valves, and sliding type valves such as water control doors. It can be applied not only when switching between the usage status of M is performed frequently but also when the switching is not performed frequently.

[Brief explanation of the drawing]

Figure 1 is a cutaway front view of the butterfly valve, Figure 2 is a cutout front view of the valve opening/closing operation structure, Figure 3 is a partially cutaway perspective view of the clutch mechanism, and Figure 4 is a cutout on the side of the aircraft. Front view, 5th
The figure is a front view showing a deformed state of the plate-like piece, FIG. 6 is a front view showing another embodiment, and FIG. 7 is a front view showing a conventional example. 8... Rotating shaft for valve opening/closing operation, 9... Rotating handle for manual operation, 10... Rotating shaft, 1
1... Platy piece, 12... Coughing process, 1
6...Locking part, 19 or 20...Catch, M
... Drive mechanism. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 ? figure

Claims (1)

[Scope of Claims] 1. A rotary handle 9 for manual operation and a drive mechanism M are interlocked and connected to a rotary shaft 8 for valve opening/closing operation, and the handle 9 is
A rotary support shaft 10 that rotates integrally with the rotation shaft 8 is slidably and relatively rotatably fitted on the outside, and is moved forward and backward along the axis direction of the support shaft with respect to an occlusal protrusion 12 provided on the support shaft 10. The outer peripheral edge portion of the elastic plate-like piece 11, which engages and disengages by
The support shaft 10 is provided with a locking portion 16 that is elastically deformed in the direction of the support shaft axis and pressed so as to cross over the support shaft, so that the connection between the handle 9 and the rotating shaft 8 can be disconnected. a pair of seats 19 located on both sides of the plate-like piece 11 so as to receive and support the side surface of the plate-like piece 11 near the inner peripheral edge when passing over the locking portion; 19 or 20, 20 is provided to protrude inward from the outer circumferential portion of the handle 9. A valve opening/closing operation structure characterized in that a valve opening/closing operation structure is provided. 2. The first aspect of the present invention is characterized in that each of the tip ends of the catch seats 19, 19 is bent to one side of the plate shape so that only the tip edge portion comes into contact with the plate piece 11. The valve opening/closing operation structure described in .