JP2003049965A - Manual valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operability of a handle of a manual valve by enabling the handle to rotate on an axis different from a valve stem. SOLUTION: This manual valve 1 is equipped with a valve stem 21 capable of reciprocating to the axial direction in order to abut or separate a diaphragm 31 with respect to a valve seat 29 provided on a flow passage 28 of a body 20, a handle 4 rotatably operated in order to reciprocate the valve stem 21, an operating shaft 50 integrally rotatable with the handle 4 and having an axis crossing the valve stem 21, and a conversion mechanism 5 for converting rotations of the operating shaft 50 to movements of the valve stem 21 to the axial direction. The conversion mechanism 5 contains cams 51 and 52 integrally rotatable with the operating shaft 50, and bearings 57 and 58 capable of being fitted onto cam surfaces 55 and 56 of the cams 51 and 52. The bearings 57 and 58 are rotatably provided on a tip of the valve stem 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual valve for manually opening and closing a handle to open and close it.

[0002]

2. Description of the Related Art Conventionally, as a manual valve of this type, as shown in FIG.
As shown in FIG. 11, a manual valve 100 attached to a branch pipe 102 branched from a main pipe 101 in a factory piping facility.
There is. This manual valve 100 includes a pair of pipe joints 111 and 112 integrally provided on a body 110 and a body 110.
The holder 120 is integrally fastened with the nuts 121 and 122, and the handle 130 is provided at the tip of the holder 120. In this manual valve 100, one pipe joint 111 has a mating pipe joint 1 provided on a branch pipe 102.
It is supported by the branch pipe 102 by being connected to 03.

FIG. 12 shows a part of the manual valve 100 in a cutaway manner. A flow path 113 is provided in the body 110,
A valve seat 114 is provided in the middle of the flow path 113. A diaphragm 115 as a valve body provided corresponding to the valve seat 114 is fixed by sandwiching the periphery between the body 110 and the holder 120. Inside the holder 120, the valve shaft 12 extending in the direction orthogonal to the direction in which the flow path 113 extends.
3 is assembled. A flange 124 is provided at the base end of the valve shaft 123 so as to come into contact with the diaphragm 115.
A spring 1 for urging the valve shaft 123 is attached to the flange 124.
25 are provided. The handle 1 is attached to the tip of the valve shaft 123.
30 are connected.

Then, the handle 13 shown in FIGS.
In the state of 0, the flange 124 of the valve shaft 123 separates from the diaphragm 115, and the diaphragm 115 moves to the valve seat 114.
The flow path 113 is opened apart from. From this state, by rotating the handle 130 by 90 ° by hand, the valve shaft 1
23 moves in the axial direction against the spring 125, the diaphragm 115 is pressed and comes into contact with the valve seat 114, and the flow path 113 is closed.

[0005]

However, in the conventional manual valve 100, the holder 120 is parallel to the main pipe 101 in the mounted state shown in FIGS. 10 and 11, and the handle 130 is located at the tip of the holder 120. To do. Therefore, for a worker who operates the handle 130 from above, the handle 130 may face sideways near the floor surface, which may cause inconvenience in operation, and may cause inconvenience in confirming the operation state of the handle 130. It was

The present invention has been made in view of the above circumstances, and an object thereof is to enable the handle to rotate on an axis different from the valve shaft, thereby improving the operability of the handle. The purpose is to provide a manual valve.

[0007]

In order to achieve the above object, the invention according to claim 1 corresponds to a flow passage provided in the body, a valve seat provided in the flow passage, and a valve seat. A valve shaft provided to the valve seat, a valve shaft provided to be reciprocable in an axial direction intersecting the flow path to bring the valve body into contact with or away from the valve seat, and to reciprocate the valve shaft. A handle that is rotated is provided, and the valve shaft is moved forward by the handle to bring the valve body into contact with the valve seat to close the valve, and the handle is moved back to separate the valve body from the valve seat. In the manual valve configured to open by means of the above, it is provided so as to be rotatable integrally with the handle, and is provided between the valve shaft and the operating shaft whose axis intersects with the valve shaft, and the rotation of the operating shaft is prevented. It is intended to include a conversion mechanism for converting the movement of the valve shaft in the axial direction.

According to the structure of the above invention, by rotating the actuating shaft together with the handle, the rotation is converted by the converting mechanism into movement of the valve shaft in the axial direction, whereby the valve body abuts against the valve seat. They come into contact with or separate from each other, and the manual valve closes or opens. Here, the operating shaft that can rotate integrally with the handle is
Since the valve shaft and the axis line are provided so as to intersect with each other, the handle is rotated on an axis different from the valve shaft, and the handle is rotated in a direction different from that of the handle rotated coaxially with the valve shaft.

In order to achieve the above object, the invention according to claim 2 is the cam according to claim 1, wherein the conversion mechanism is provided so as to be rotatable integrally with the operating shaft and includes a predetermined cam surface. And a bearing provided on the valve shaft so as to be engageable with the cam surface, and the cam is rotated together with the operating shaft to engage the cam surface and the bearing to reciprocate the valve shaft in the axial direction. The purpose is that it is configured as follows.

According to the configuration of the above invention, the configuration of the conversion mechanism is specified by the cam and the bearing, and the same operation as that of the invention according to claim 1 is obtained.

In order to achieve the above object, a third aspect of the invention is the invention of the first aspect, wherein the conversion mechanism is a first bevel gear that is integrally rotatable with the operating shaft,
A second bevel gear that is provided on the valve shaft and that meshes with the first bevel gear, and a cam that is integrally rotatable with the second bevel gear and that includes a predetermined cam surface and can engage with the cam surface at the valve shaft A bearing provided on the first shaft, a first bevel gear, and a second shaft together with the operating shaft.
The gist is that the bevel gear and the cam are rotated to engage the cam surface with the bearing to reciprocate the valve shaft in the axial direction.

According to the configuration of the above invention, the configuration of the conversion mechanism is specified by the first bevel gear, the second bevel gear, the cam, the bearing, and the like, and the same action as the invention according to claim 1 is obtained.

In order to achieve the above object, the invention according to claim 4 is the invention according to claim 1, wherein the valve shaft, the operating shaft and the conversion mechanism are integrally rotated with respect to the body about the valve shaft. The purpose is to have a rotating mechanism for making it.

According to the structure of the above invention, the rotating mechanism enables the valve shaft, the actuating shaft and the converting mechanism to rotate integrally with the body about the valve shaft. It can be changed.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) A first embodiment of the manual valve of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows a side view of a manual valve 1 according to the present embodiment. In addition, FIG. 2 also shows the manual valve 1
4 is a plan view of the open state of FIG. 3, and FIG. 3 is a plan view of the handle portion in the closed state. The manual valve 1 is, for example, a floor surface 1.
It is used by being attached from a main pipe 11 arranged horizontally along 0 to a branch pipe 12 which branches at a right angle toward an apparatus (not shown).

As shown in FIG. 1, the manual valve 1 comprises a valve body 2, a conversion mechanism 3 and a handle 4. The valve body 2 has almost the same configuration as the manual valve 100 described in the section of the related art, and includes a body 20 in which a pair of pipe joints 22 and 23 are integrally provided, and nuts 24 and 25 in the body 20.
The holder 30 is integrally fastened. The manual valve 1 is supported by the branch pipe 12 by connecting one pipe joint 23 to a mating pipe joint 13 provided on the branch pipe 12.

As shown in FIGS. 2 and 3, the handle 4 has a substantially rhombic plan shape, and the rotation direction for opening and closing is indicated by an arrow on the upper surface. The conversion mechanism 3 includes a cover 34 and a cap 35, and the upper surface of the cover 34 has
Hold the holder 3 on the outside of the minor axis of the handle 4 and on the inside of the major axis of the handle 4.
There are two "OPEN" in parallel with 0, and holder 3
Two "CLOSE" are displayed vertically to 0.
Therefore, only "OPEN" is visible in the open state where the major axis of the handle 4 is parallel to the holder 30 (see FIG. 2), and only "CLOSE" is visible in the closed state where the major axis of the handle 4 is perpendicular to the holder 30. (See Figure 3). As described above, since either of them can be seen depending on the direction of the handle 4, the open / closed state of the manual valve 1 at that time can be seen at a glance.

Next, a sectional view of the manual valve 1 is shown in FIG. FIG. 4 shows the manual valve 1 in which the valve shaft 21 is arranged in the vertical direction and is rotated by 90 ° from the state shown in FIG. The body 20 of the manual valve 1 includes pipe fittings 22 and 23.
To the outside, two ports 26 and 27 are provided, and a valve seat 29 is provided in the middle of a flow path 28 that connects them. A diaphragm 31 as a valve body provided corresponding to the valve seat 29 has a periphery around the body 20 and the holder 3.
It is sandwiched between 0 and fixed. Inside the holder 30, a valve shaft 21 extending in a direction orthogonal to the direction in which the flow path 28 extends is provided. A flange 32 is provided at the base end of the valve shaft 21 so as to come into contact with the diaphragm 31. A spring 33 that urges the valve shaft 21 is attached to the flange 32.

The conversion mechanism 5 is provided on the tip side of the spring 33 of the holder 30. The conversion mechanism unit 3 includes a cover 3
4, the cap 35, and the conversion mechanism 5. Inside the holder 30, a thrust bearing 36 that assists the sliding of the valve shaft 21 is provided, and the cover 34 and the holder 30 are prevented from coming off with screws 37. Inside the handle 4, a substantially columnar link 41 is provided by being fixed to the handle 4 with a screw 42. Further, the link 41 is rotatably held by the cover 34 via an O-ring 38 and a C-shaped retaining ring 39. The operating shaft 50 is fixed to the center of the link 41, and the operating shaft 50 is orthogonal to the axis of the valve shaft 21 and
And the holder 30 is penetrated. The through hole 43 provided in the valve shaft 21 and penetrating the operating shaft 50 has a long cylindrical shape that is longer in the axial direction of the valve shaft 21 than the diameter of the operating shaft 50.

As shown in the perspective view of FIG. 5, the conversion mechanism 5 is provided with a pair of substantially semicircular cams 51 and 52 that sandwich the valve shaft 21. The cams 51 and 52 have the actuating shafts 50 and 2
It is fixed to the link 41 by the book connecting rods 53 and 54, and is provided so as to be integrally rotatable. A pair of cams 51, 52
The cam surfaces 55 and 56 having the same shape are provided on the respective surfaces. A pair of bearings 57, 58 engageable with the cam surfaces 55, 56 are provided at the tip of the valve shaft 21.
It is rotatably supported around.

The cam surfaces 55 of the cams 51 and 52,
56 is a first cam surface 55a, 56a and a second cam surface 55b,
56b and a continuous curved surface including. The first cam surfaces 55a and 56a are valve opening cam surfaces that are in a valve open state when the bearings 57 and 58 are engaged, because the distance from the operating shaft 50 that is a rotating shaft is long, and the second cam surfaces 55b and 56b.
Is a valve-closing cam surface that is close to the operating shaft 50.

Next, the operation of the manual valve 1 configured as described above will be described with reference to the sectional views of FIGS. 4 and 6
In the state where the major axis of the handle 4 is parallel to the valve shaft 21, and the flange 32 of the valve shaft 21 is attached to the diaphragm 3
1, the diaphragm 31 is separated from the valve seat 29, and the flow path 28 is opened. At this time, as shown in FIG.
The bearing 57 is engaged with the first cam surface 55 a of the cam surface 55 of the cam 51. This allows the bearing 5
The valve shaft 21 is pushed upward together with 7 and the bearing shaft 59.

Here, when the handle 4 is manually rotated 90 °, the operating shaft 50 is rotated 90 ° via the link 41. Therefore, the cams 51 and 52 fixed to the operating shaft 50 and the link 41 also rotate 90 °, and the bearing 57 engages with the second cam surface 55b of the cam surface 55 of the cam 51, as shown in FIG. To do. Therefore, together with the bearing 57 and the bearing shaft 59, the valve shaft 21 is pushed down by the urging force of the spring 33, and the flange 32 is moved to the diaphragm 3.
Press 1 downwards. As a result, the diaphragm 31
Comes into contact with the valve seat 29, the flow path 28 is closed, and the valve is closed.
When the handle 4 is rotated by 90 ° from the state shown in FIG. 7, the state shown in FIG. 6 is restored and the valve is opened.

As described above, according to the manual valve 1 of this embodiment, the cams 51 and 52 are rotated by rotating the operating shaft 50 together with the handle 4. Due to this rotation, the valve shaft 21 is moved in the axial direction via the bearing 57, whereby the diaphragm 31 moves toward the valve seat 29.
And the manual valve 1 is closed or opened. Here, the operating shaft 50 that can rotate integrally with the handle 4
However, since it is provided in a state where the axis of the valve shaft 21 and the axis line thereof are orthogonal to each other,
The handle 4 is rotated on an axis different from that of the valve shaft 21, and the handle 4 is rotated in a direction different from that of the handle 130 that is rotated coaxially with the valve shaft 123 of the conventional manual valve 100. Therefore, the operability of the handle 4 can be improved. That is, even if the operator operates the handle 4 from above, the handle 4 faces upward even near the floor surface 10, so that the operator can easily operate the handle 4.
In addition, “OPEN” and “CLOS” attached to the case 34
The operator can visually recognize the letter “E” from above, and can easily confirm the operating state of the handle 4.

(Second Embodiment) Next, a manual valve 60 according to a second embodiment of the present invention will be described with reference to the sectional view of FIG. In this manual valve 60, the configuration of the holder 30 of the manual valve 1 (see FIG. 4) of the first embodiment is only changed, and the other parts are denoted by the same reference numerals and the description thereof is omitted. .

This manual valve 60 is a holder 30 for the manual valve 1.
Is divided into two members, a holder 61 and a sleeve 62, and the sleeve 62 is provided integrally with the cover 34 via a screw 37. As shown in FIG. 8, by tightening the screw 37 in the circumferential groove 64, the case 34,
The sleeve 62 and the like are fixed to the holder 61.

The manual valve 60 allows relative rotation between the sleeve 62 and the holder 61 by loosening the screw 37. As a result, the case 34, the sleeve 62, the handle 4, the conversion mechanism 5, and the valve shaft 21 can be integrally rotated to rotate about the axis of the valve shaft 21.
You can change the direction of. The position of the handle 4 can be fixed again by tightening the screw 37 in the circumferential groove 64 in a state where the direction of the handle 4 is changed. Where the first
A configuration in which the holder 30 in the manual valve 1 according to the embodiment is divided into a holder 61 and a sleeve 62 so that relative rotation between them is possible corresponds to the rotation mechanism according to claim 4.

As described above, according to the manual valve 60 of the second embodiment, the valve shaft 21, the conversion mechanism 5, and the sleeve 6 are provided.
2. Since the case 34 and the handle 4 rotate integrally with the body 20, the direction of the handle 4 can be freely changed. Therefore, the operability of the handle 4 can be further improved as compared with the first embodiment.

(Third Embodiment) Next, a manual valve 70 according to a third embodiment of the present invention will be described with reference to the sectional view of FIG. In this manual valve 70, the configuration of the conversion mechanism 5 of the manual valve 1 (see FIG. 4) of the first embodiment is changed. The same parts as those of the manual valve 1 are designated by the same reference numerals and the description thereof will be omitted.

In the manual valve 70, a first bevel gear 71 is provided at the tip of the link 41. In this embodiment, the link 41 functions as an operating shaft. Also, the valve shaft 7
The second bevel gear 7 that meshes with the first bevel gear 71
3 is provided. Similarly, on the valve shaft 72, the second bevel gear 7
A substantially cylindrical cam 75 having a spiral cam surface 74 is provided so as to be overlapped with the third cam 3. The second bevel gear 73 and the cam 75 are integrally rotatably connected by two connecting pins 76 and 77. A pair of bearings 78, 79 engageable with the cam surface 74 are provided at the tip of the valve shaft 72.
It is rotatably supported around 0.

An O-ring 81 is provided between the link 41 and the handle 4. The handle 4 is fixed to the link 41 with a screw 82. The cover 34 is fixed to the tip of the substantially cylindrical holder 91. A bearing 93 is provided at the tip of the holder 91 between the holder 91 and the second bevel gear 73. Also, inside the bearing 93, the valve shaft 7
A stopper 94 for preventing rotation is provided so as to pass through 2.

Next, the manual valve 70 constructed as described above.
The operation of will be described. FIG. 9 shows the open state of the manual valve 70, and the major axis of the handle 4 is parallel to the valve shaft 72.
Here, when the handle 4 is manually operated and rotated by 90 °, the first bevel gear 71 rotates by 90 °, and the second bevel gear 73 meshed with the first bevel gear 71 also rotates by a predetermined amount. Since the cam 75 is connected to the second bevel gear 73, it rotates in the same manner as the second bevel gear 73 and the spiral cam surface 7 of the cam 75 is rotated.
The lower part of 4 engages with bearings 78, 79. As a result, the valve shaft 72 together with the bearings 78 and 79 and the bearing shaft 80 is pushed down by the urging force of the spring 33, and the diaphragm 31 comes into contact with the valve seat 29 to close the valve. At this time, the rotation of the second bevel gear 73 is smoothly performed by the bearing 93. Also, the valve shaft 72
Is held by the holder 94 while being stopped by the stopper 94.
It is connected to 1.

As explained above, according to the manual valve 70 of the third embodiment, the handle 4 and the first bevel gear 71 are provided.
Is rotated, the rotation is converted into movement of the bearings 78 and 79 in the axial direction of the valve shaft 72 via the second bevel gear 73 and the cam 75. As a result, the diaphragm 31 comes into contact with or separates from the valve seat 29, and the manual valve 70
Closes or opens. Here, since the link 41, which is the central axis of the handle 4, is provided in a state where the axis is orthogonal to the valve shaft 72, the handle 4 is rotated on an axis different from the valve shaft 72, and the conventional manual valve 100 Valve shaft 12
The handle 4 is rotated in a direction different from that of the handle 130 that is being rotated coaxially with the handle 3. Therefore, the operability of the handle 4 can be improved.

The present invention is not limited to the above-described embodiments, but may be implemented with appropriate modifications without departing from the spirit of the invention. For example, although the valve shafts 21, 72 and the actuating shafts 50, 41 are orthogonal to each other in each of the above-described embodiments, the shape of the cam surface or the like may be changed so as to intersect diagonally.

[0035]

According to the configuration of the invention described in claim 1, since the operating shaft which is integrally rotatable with the handle is provided in a state where the axis of the valve intersects with the axis of the valve, the handle is provided on an axis different from the axis of the valve. Therefore, the handle is rotated in a direction different from that of the conventional handle that rotates coaxially with the valve shaft. Therefore, the operability of the handle can be improved.

According to the configuration of the invention described in claim 2, since the configuration of the conversion mechanism is specified by the cam and the bearing, the same effect as that of the invention of claim 1 is exhibited.

According to the configuration of the invention described in claim 3, the configuration of the conversion mechanism is specified by the first bevel gear, the second bevel gear, the cam, the bearing, etc. It has the same effect.

According to the configuration of the invention described in claim 4, since the rotation mechanism can change the direction of the handle, the effect of the invention described in any one of claims 1 to 3 In contrast, the operability of the steering wheel can be further improved.

[Brief description of drawings]

FIG. 1 is a side view showing a manual valve according to a first embodiment.

FIG. 2 is likewise a plan view of the manual valve.

FIG. 3 is likewise a plan view of the handle portion of the manual valve.

FIG. 4 is likewise a sectional view of the manual valve.

FIG. 5 is a perspective view showing a manual valve conversion mechanism.

FIG. 6 is likewise a sectional view of the manual valve.

FIG. 7 is likewise a sectional view of the manual valve.

FIG. 8 is a sectional view showing a manual valve according to a second embodiment.

FIG. 9 is a sectional view showing a manual valve according to a third embodiment.

FIG. 10 is a side view of a conventional manual valve.

FIG. 11 is a plan view of a conventional manual valve.

FIG. 12 is a partial cross-sectional view of a conventional manual valve.

[Explanation of symbols]

1 Manual valve 4 handles 5 conversion mechanism 20 body 21 valve stem 28 channels 29 seat 31 diaphragm 41 links 50 working axis 51 cam 52 cam 55 Cam surface 56 Cam surface 57 Bearing 58 bearing 60 manual valve 70 Manual valve 71 First Bevel Gear 72 valve shaft 73 Second Bevel Gear 74 Cam surface 75 cam 78 Bearing 79 bearings

Claims (4)

[Claims] 1. A flow path provided in a body, a valve seat provided in the flow path, a valve body provided in correspondence with the valve seat, and the valve body applied to the valve seat. The valve shaft is provided so as to reciprocate in the axial direction intersecting with the flow path so as to come into contact with or separate from the flow channel, and a handle that is rotated to reciprocate the valve shaft. To move the valve body forward to bring the valve body into contact with the valve seat, thereby closing the valve body, and by returning the valve shaft by the handle to move the valve body away from the valve seat to open the valve body. In the configured manual valve, the operating shaft is provided so as to be rotatable integrally with the handle, the operating shaft having an axis intersecting with the valve shaft, and the operating shaft provided between the valve shaft and the operating shaft. And a conversion mechanism for converting the movement of the shaft in the axial direction. A manual valve characterized by that. 2. The conversion mechanism includes a cam that is integrally rotatable with the actuating shaft and includes a predetermined cam surface, and a bearing that is engageable with the cam surface by the valve shaft. The manual according to claim 1, wherein the cam is rotated together with the actuating shaft to engage the cam surface and the bearing to reciprocate the valve shaft in an axial direction thereof. valve. 3. The conversion mechanism includes a first bevel gear that is integrally rotatable with the operating shaft, a second bevel gear that is provided on the valve shaft and meshes with the first bevel gear, and the first bevel gear. Two
A cam having a predetermined cam surface that is integrally rotatable with the bevel gear, and a bearing that is provided so as to engage with the cam surface at the valve shaft, and the first bevel gear together with the operating shaft; The said 2nd bevel gear and the said cam are rotated, the said cam surface and the said bearing are made to engage, and it comprised so that the said valve shaft may be reciprocated in the axial direction. Manual valve. 4. The rotating mechanism for integrally rotating the valve shaft, the actuating shaft, and the converting mechanism with respect to the body about the valve shaft. Manual valve.