JPS5817180Y2 - Main and sub-valve opening/closing device for valves with built-in sub-valves - Google Patents

Description

[Detailed description of the invention] This invention was developed to smoothly open and close butterfly valves installed in large diameter pipes that transport large volumes of fluid without requiring any special effort. Regarding the butterfly valve with a built-in sub-valve, in detail, the main/sub-valve opening/closing device for a valve with a built-in sub-valve allows the sub-valve shaft inserted into the main valve shaft to be operated independently of the main valve shaft. Regarding.

A typical conventional butterfly valve with a built-in auxiliary valve is disclosed in Japanese Utility Model Publication No. 48-25237.

To explain this prior art based on FIG. 7, the large valve body 0
1 and a small valve body 02, and when the handle 03 is rotated in the forward direction, each gear 06.07 on the upper end of the handle shaft 04 and the small valve shaft 05 and each gear 09, 010 on the counter shaft 08
Since the small valve shaft 05 is slightly rotated through the small valve shaft 05, the small valve body 02 supported on the lower end of the small valve shaft 05 connected thereto rotates relative to the small water stop valve seat and opens.

Also, when the large handle is operated in the positive direction, the large worm gear 011 is rotated in the normal direction, so the large segment gear 012 that is meshed with the large worm gear is rotated, and the large valve shaft that is fixed by the gear and the key is rotated. Since 013 is also rotated, the large valve body 01 is rotated relative to the large water stop valve seat H to open the valve.

In this conventional technology, the valve bodies of any size can be operated independently and operate reliably regardless of the valve opening/closing position. When each of the large valve body 01 and the small valve body 02 is used in a half-open state, hydraulic force is applied to return the valve to an open/closed state or, depending on its structure, to an open/closed state.

In particular, for large valve bodies, the wall wheel and worm gear prevent the large valve body from malfunctioning due to hydraulic force, but for small valve bodies, for example, the small valve shaft 05 of small valve body 02 may be forced to operate due to hydraulic force. The small valve body 02 may malfunction due to the applied force.

Therefore, it was desired that the small valve body 02 could be operated smoothly without requiring any special effort, and that the small valve body 02 would not malfunction due to hydraulic power.

Therefore, as a result of investigating the cause of the malfunction of the small valve body 02 of the conventional technology, it was found that the above-mentioned problem is that the small valve shaft 05 of the conventional technology directly transmits its rotational force to the handle 03 by a general gear mechanism. It turned out that this was the cause of the dots.

That is, the rotating case 014 rotates the large valve shaft 0 of the large valve body 01.
13, and cannot be made very large, so the reduction ratio cannot be increased by a normal gear mechanism, and the handle shaft 04 is rotated by the force applied to the small valve body 02. It keeps spinning.

Therefore, the technical problem of the present invention is to increase the reduction ratio between the handle shaft 04 and the small valve shaft 05 even though it is a small rotating case, and to easily increase the reduction ratio between the handle shaft 04 and the small valve shaft 05 depending on the rotational force of the small valve shaft 05 due to fluid force. The goal is to prevent it from turning.

The present invention adopts the following configuration in order to solve the above technical problem.

That is, in a valve with a built-in sub-valve in which a sub-valve B is arranged in the center of a butterfly-type main valve A, the main valve shaft is The operating shaft 7a of the valve a is led out in the horizontal direction, the rotating case 11 placed on the fixed case 10 is fixed to the top of the main valve shaft a, and the auxiliary valve shaft inserted into the main valve shaft a is The handle shaft 9 inserted through the top of the rotating case 11 and the gear member 28 are connected to the gear member 28 by the rotation of the handle shaft 9.
The main valve A and the sub valve B can be operated independently from the handle shaft 9 side above the valve, and each operation In particular, the rotation of the handle shaft 9 is transmitted by a planetary gear mechanism C to a gear member 28 fixed to the neck of the auxiliary valve shaft.

Conversely, the force that the sub-valve B receives due to the fluid force is transmitted to the sub-valve shaft b and the gear member 28, but the planetary gear mechanism C has a much larger reduction ratio than a gear mechanism using general gears.
Depending on the rotational force applied to the sub-valve shaft, the handle shaft 9 may easily
It is not possible to turn it, and it appears to be locked.

Therefore, the present invention has the following unique effects. (1) As described above, even if the sub-valve B is attempted to be rotated by fluid force, it will be locked by the planetary gear mechanism C, and there will be no malfunction in which the sub-valve B will open or close.

(2) In particular, since the operating force for the auxiliary valve B is performed via a planetary gear, smoother opening and closing operations are possible than with conventional general gears.

Next, preferred embodiments will be described with reference to the drawings.

FIG. 1 shows a cross-sectional view of the valve device. A butterfly-type main valve A having a constant thickness is mounted in the valve body 14 installed in the middle of the waterway. The lower part of the main valve shaft a, which has been inserted freely, is fitted into the upper center of the main valve A and fixed by the pin 16, and the lower part of the main valve shaft 17, which is fitted into the lower center of the main valve A and fixed by the pin 16. The lower part of the valve body 14 is rotatably fitted into the shaft support 15' at the lower part of the valve body 14, and the main valve A is connected to the valve body 14.
The mounting structure is such that it can be pivoted by the main valve shaft a and the support shaft 17 within the shaft.

In the center of the main valve A, there is a hole 1 having a relatively large circular side surface.
A flange 2a that can fit with the step on the end face of the hole 1 is formed on the outer edge of the case-shaped sub-valve mounting body 2 that fits into the hole 1 from one side. The peripheral edge of the disc-shaped sub-valve mounting body 3 that can match the other side of the hole 1 and abut against the end face of the sub-valve mounting body 2 is attached to the stepped portion of the other end surface of the hole 1. Engage and screw 1
8, so that it can be fixed by the side valve mounting body 2.3.
The circular holes 2b and 3a are formed in the center of each of the holes 2b and 3a.

In addition, support seats 19 and 19' are interposed inside the lateral valve mounting bodies 2 and 3 inside the center of the main valve A, and the ball-shaped auxiliary valve B is rotatably fitted thereinto. A water passage hole 4 that can match the holes 2b and 3a is formed in B, and the lower center of the sub-valve B is rotated against the upper part of the support bolt 20 which is vertically adjustable and inserted into the lower center of the sub-valve mounting body 2. The lower end portion 5 of the auxiliary valve shaft, which is fitted into the main valve shaft a and the main valve A so as to be freely rotatable, is fitted into the upper center of the auxiliary valve B. The auxiliary valve B is installed so that it can be rotated by the auxiliary valve shaft with the support bolt 20 as the axis, and its tip 5 is made into a square shaft and is fitted to the auxiliary valve B so that it can be changed. .

A fixed case 10 is fixed above the shaft support 15 of the valve body 14, and the main valve shaft a is inserted into the fixed case 10 so that the upper part of the main valve shaft a extends to the upper surface. A worm wheel 6, which is a segment gear, is fitted and fixed on the upper part of the worm wheel 6, and the shaft 7a of the worm gear 7 meshed with the worm wheel 6 is installed in the fixed case 10 and extends outside the fixed case 10 on the side. A loop-shaped operating handle 8 is attached to the end of the shaft 7a.

A part of the lower surface of the rotating case 11 is joined to the upper end surface of the main valve shaft a that slightly protrudes above the upper surface of the fixed case 10, and the tightening is fixed with a bolt 21.21, and it is integrated with the main valve shaft a. A main valve opening degree gauge 12 is installed between the rotating case 11 which rotates in the same direction and the fixed case 10.
The pointer 122 is fixed to one end side of the lower surface of the rotating case 11, and the scale plate 12b is fixed to the upper surface of the fixed case 10.

The upper part of the auxiliary valve shaft extends above the upper end surface of the main valve shaft a, and a handle shaft 9 with a handle 9a and a auxiliary An over-elevation gear mechanism C is interposed within the rotating case 11 between the upper part of the valve shaft and the fixed gear 22 is integrally formed inside the rotating case 11 above. The base of the arm 23 is fitted into the handle shaft 9, which is mounted inward from the center of the gear 22, and fixed with a key 24, and one of the planetary gears 25 and 25' loosely fitted to the tip of the arm 23 is fixed. gear 22
The lower part of the handle shaft 9 is loosely fitted into the upper part of the boss 27 which is engaged with the upper part of the auxiliary valve shaft and fixed by a key 26, and the Although the planetary gears 25' are meshed with each other, both planetary gears 25 and 25' are formed to have a different number of teeth by 1 or 2 teeth.

Further, as shown in FIG. 6, the boss 27 has one surface 27a and the other surface 27b formed at right angles on the circumferential surface thereof, and a bolt drawing stopper 13 screwed in parallel to the rotating case 11.
．． The tip of the stopper 13' is installed so as to be able to control the rotation by abutting against the surface 27a and the other surface 27b, respectively, and both stoppers 13 and 13', which can be locked by lock bolts 29 and 29', are moved back and forth. One side 27 a and the other side 2
7b, but the key 26 is configured so that the groove of the key 26 can be shifted by 90'.

Therefore, the auxiliary valve B can be rotatably attached to the center hole 1 of the main valve A by attaching the auxiliary valve mounting bodies 2 and 3 from both sides.

When the operation handle 8 is rotated, the main valve shaft a is rotated due to the engagement between the worm gear 7 and the worm wheel 6, and the main valve A, which is supported by the main valve shaft a and the support shaft 17, is rotated. The main valve opening gauge 12 is measured between the rotating case 11, which rotates together with the main valve shaft a, and the fixed case 10, and the opening degree of the main valve A can be determined. can.

In this case, even if the rotation case 11 rotates, the sub-valve shaft and the handle shaft 9 do not rotate due to the interposition of the planetary gear mechanism C.

Also, when the handle 9a is rotated, the handle shaft '9
With the rotation of a, the auxiliary valve shaft is rotated by the over-ascending gear mechanism C, and the auxiliary valve B, which is supported by the support pole 20, is mounted on the inside of the hole 1. The opening/closing operation by the sub valve B is performed by rotating the water passage hole 4 by changing the direction of the water passage hole 4 with respect to the holes 2b and 3a.

In that case, the stopper 13 is attached to one surface 27a of the boss 27.
When the stopper 13' abuts against the other surface 27b, the rotation of the auxiliary valve shaft b, that is, the auxiliary valve B, is controlled within a 90° range. The degree of rotation of valve B can be adjusted.

Further, due to the interposition of the planetary gear mechanism C, the main valve shaft a and the rotating case 11 do not rotate even if the handle 9a is rotated.

As described above, the features of the water utilization valve of the present invention include the fixed case 10 provided at the top of the valve body 14 in a valve with a built-in sub-valve in which the sub-valve B is arranged in the center of the butterfly-type main valve A.
The operating shaft 7a of the main valve shaft a is led out in the horizontal direction through the worm wheel 6 and worm gear 7 inside, and the rotating case 11 placed on the fixed case 10 is fixed to the top of the main valve shaft a. At the same time, the neck of the auxiliary valve shaft inserted into the main valve shaft a is inserted and fixed through the boss 27 of the gear member 28, and the neck part of the auxiliary valve shaft inserted into the main valve shaft a is inserted into the boss 27 of the gear member 28 and fixed, and the neck part of the auxiliary valve shaft is inserted from the top of the rotating case 11 in a vertical direction coaxially with the auxiliary valve shaft. The arm 23 fixed to the handle shaft 9 inserted into the
The upper planetary gear 25 is meshed with the fixed gear 22 which supports the support shafts of the upper and lower sets of planetary gears 25 and 25' and is formed coaxially with the auxiliary valve shaft inside the top of the rotating case. By meshing the lower planetary gear 25' with 28, the opening/closing operation of the auxiliary valve shaft is made independent of the main valve shaft a. By interposing the planetary gear mechanism C, which can be independently operated as desired from the shaft 9 side, and which can reduce the speed of each operation and prevent the handle position from moving, it is possible to operate easily and effectively without interrelation with each other. Furthermore, the auxiliary valve hole provided in the center of the main valve is a Hall valve with low flow loss, making it extremely easy to operate, accurately adjusting the flow rate, and allowing the operating shaft to be brought close together for effective operation. At the same time, both operation sides can be brought close to each other, resulting in a compact structure as a whole, and the structure of both operation sides is simple, easy to assemble, and compact, which has excellent features as an ice-making valve.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a sectional view of the valve device, FIG. 2 is a perspective view of a part thereof, and FIG. 3 is a side sectional view of a ball valve part, which is a part of FIG. Fig. 4 is an enlarged view of the upper part of Fig. 1, Fig. 5 is an enlarged view of a part of Fig. 1, Fig. 6 is a sectional view taken along line I-I of Fig. 5, and Fig. 7 is 1 is a cross-sectional view of a prior art valve; FIG. A...Main valve, B...Sub-valve, a...
... Main valve shaft, b ... Sub-valve shaft, 6 ... Worm wheel, 7 ... Worm gear, 8 ...
...Operating handle, 9...Handle shaft, C
・・・・・・Planetary gear mechanism.

Claims (1)

[Scope of utility model registration request] In a valve with a built-in auxiliary valve in which a ball-shaped auxiliary valve B is arranged in the center of a butterfly-type main valve A, the main valve shaft is The operating shaft 7a of a is guided out in the horizontal direction, and the rotating case 1 is placed on the fixed case 10.
1 is fixed to the top of the main valve shaft a, and the neck of the auxiliary valve shaft inserted into the main valve shaft a is fixed to the gear member 28, and the handle shaft 9 inserted from the top of the rotating case 11 is fixed to the The fixed arm 23 supports the supporting shafts of the upper and lower sets of planetary gears 25 and 25', and the fixed gear 22, which is formed coaxially with the sub-valve shaft inside the top of the rotating case, supports the upper planetary gears 25 and 25'. gear 2
The handle shaft 9 and the gear member 28 are connected to the handle shaft 9 in a sub-valve characterized in that the lower planetary gear 25' is meshed with the gear member 28 and is independent of the main valve shaft a. A valve with a built-in auxiliary valve characterized in that the gear member 28 can be rotated at a reduced speed and can be operated by interlocking with the planetary gear mechanism C that does not transmit the rotational force of the gear member 28 to the handle shaft 9. Main and sub-valve opening/closing device.