JP4426705B2 - Valve body open / close display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a valve body open / close display device, and more particularly, to a valve body open / close display device for displaying an open / closed state of a ball valve or the like used for a repair valve of an underground fire hydrant or a water valve.
[0002]
[Prior art]
For example, underground fire hydrants, water supply air valves, and the like are attached to branch pipes rising from water pipes via repair valves (sub-valves). This repair valve is closed when performing maintenance work or the like of the fire hydrant main body or air valve main body, and is normally open, and is closed when performing maintenance work or the like. .
[0003]
In such repair valves, a ball valve that opens and closes by rotating the valve body by 90 degrees about a horizontal axis is often used, and the opening and closing operation is for opening and closing the valve body that is mounted on the ball valve. This is done by operating the lever.
[0004]
As such a valve body opening / closing lever, for example, one described in Japanese Patent No. 2532140 is known. The valve body opening / closing lever described in this publication uses a valve body opening / closing lever bent in a U-shape, whereas the conventional valve body opening / closing lever is linear. The open state and the closed state of the valve body can be recognized in the direction of the tip.
[0005]
[Problems to be solved by the invention]
However, the valve body opening / closing lever bent in the shape of a letter has a valve open state when the lever tip is directed in the vertical direction and a valve closed state when it is directed in the horizontal direction. The position of the tip of the lever in the closed state is deeper than the normal one. For example, when the valve is open, the lever reaches the tip of the lever, but the lever in the closed position does not reach. Such a problem may occur in the operability of the lever.
[0006]
Furthermore, when the tip of the lever faces in the horizontal direction, the tip of the lever protrudes from the side of the ball valve or the like in the horizontal direction. Therefore, a ball valve or the like is placed at the center of a general valve box (manhole). When installing, a large valve box capable of absorbing the protruding portion of the lever tip is required, which causes a problem of a significant increase in cost. In addition, in order to reduce the size of the valve box, a ball valve or the like can be shifted to one side of the valve box and eccentrically arranged, but in this case, the axis of the riser and the central axis of the valve box are shifted. Therefore, in the construction, sufficient attention is required for the protruding direction of the lever tip, that is, the mounting direction of the ball valve or the like, which causes deterioration in workability.
[0007]
Therefore, an object of the present invention is to provide a valve body opening / closing display device that can easily check the open / closed state of the valve without impairing operability when opening and closing the valve body and without impairing workability. .
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a valve body opening / closing display device according to the present invention is a valve body opening / closing display device for displaying an open / closed state of an underground buried type repair valve, and is provided on a valve shaft protruding from a valve box. The base end portion of the opening / closing lever is fixed, and the valve body opening / closing lever protrudes from the base end portion in the valve shaft radial direction and from the intermediate portion of the lever portion to both sides of the lever portion. And an operation member engaging portion for engaging an operation member for indirectly operating the valve body opening / closing lever, and a display portion for displaying the opening / closing direction of the valve body is protruded in the radial direction around the valve shaft. And the protrusion amount was made into below the length of the said valve body opening / closing lever, It is characterized by the above-mentioned.
[0009]
Further, the display unit is provided integrally with the valve body opening / closing lever, the display unit is provided so as to be parallel to the fluid flow direction when the valve is opened, and the fluid flow when the valve is opened. The display portion protruding downstream in the direction is shaped like an arrow. Further, the valve body opening / closing lever has a valve shaft so that a lever rotating position in a valve-opening state and a lever rotating position in a valve-closing state are symmetrical with respect to a vertical line centering on the valve shaft. It is characterized by being attached to. Still further, the operation member engaging portion protrudes from the intermediate portion of the lever portion at an opening angle of 45 degrees with respect to the distal end direction of the lever portion .
[0010]
Another configuration of the valve body opening / closing display device is a valve body opening / closing display device for displaying the open / closed state of the underground buried type repair valve, and the valve body opening / closing means is provided on one valve shaft protruding from the valve box. The valve body opening / closing lever includes a lever portion extending in the valve shaft radial direction from the base end portion, and a valve body opening / closing lever that protrudes from the middle portion of the lever portion to both sides of the lever portion. And an operating member engaging portion for engaging the operating member to be operated manually, and a display portion for displaying the opening / closing direction of the valve body on the other valve shaft protruding from the valve box is centered on the valve shaft. It is characterized by protruding in the direction. Further, the operation member engaging portion protrudes from the intermediate portion of the lever portion at an opening angle of 45 degrees with respect to the distal end direction of the lever portion .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
1 to 3 show an example of a valve body opening / closing display device of the present invention. FIG. 1 is a front view showing an open state of a ball valve provided with a valve body opening / closing display device, and FIG. FIG. 3 is a front view of a valve body opening / closing lever integrally formed with a valve body opening / closing display device.
[0012]
First, as shown in FIGS. 1 and 2, the ball valve 10 is formed by a hemispherical valve body 11 and a valve box 12 that houses the valve body 11. The valve box 12 has a lower opening 13 and an upper opening 14, and has valve shaft insertion holes 15 on opposing wall surfaces in the height direction, and the valve body 11 has both valve shaft insertion holes 15. The main valve shaft 16 and the sub-valve shaft 17 inserted in the horizontal direction across the flow path axis are rotatably supported in the valve box 12. The valve body 11 is provided with an opening 18 corresponding to the upper opening 14 and a closing part 19 for closing the upper opening 14. The valve body 11 is rotated to match the opening 18 with the upper opening 14. As a result, the upper opening 14 is closed by the closing portion 19 to be fully closed.
[0013]
In this way, the valve body opening / closing display device 20 provided in the valve that opens and closes by rotating the valve body 11 around the horizontal valve shafts 16 and 17 opens and closes the valve body 11 as shown in FIG. It is formed integrally with a valve body opening / closing lever 21 for rotating in the direction. The valve body opening / closing lever 21 includes a lever base end portion 22 fixed to the distal end portion of the main valve shaft 16 protruding from the valve box 12 and a lever portion 23 extending from the lever base end portion 22 in the valve shaft radial direction. And the operation member engaging portions 25a and 25b for engaging the operation member 24 for indirectly operating the valve body opening / closing lever 21. The valve body opening / closing display device 20 includes the lever base end portion 22. Are formed by display portions 20a and 20b made of small projecting pieces projecting symmetrically on both sides in the valve shaft radial direction.
[0014]
As shown by the solid line in FIG. 1, the valve element opening / closing lever 21 is opened when the lever part 23 is rotated 45 degrees from the vertical line to the left side of the front, and the phantom line in FIG. As shown, the lever portion 23 is positioned so as to be in a closed state when it is rotated 45 degrees from the vertical line to the right side when viewed from the front. That is, the rotation position of the lever portion 23 in the valve body opened state and the rotation position of the lever portion 23 in the valve body closed state are symmetrical with respect to the vertical line centering on the main valve shaft 16. Is set to
[0015]
When the lever portion 23 is in the valve open state, the open / close display portion 20 is shown when the display portions 20a and 20b face in the vertical direction and the lever portion 23 is in the valve closed state, as shown by a solid line in FIG. As indicated by imaginary lines in FIG. 1, the display units 20a and 20b are provided so as to face the horizontal direction. The amount of protrusion of the display portions 20a and 20b is arbitrary as long as sufficient visibility is obtained, but if it is too large, it will protrude greatly to the side of the valve box. In particular, it is preferable that the lever portion 23 be within a lateral projecting range.
[0016]
The operating member engaging portions 25a and 25b protrude from the intermediate portion of the lever portion 23 at an opening angle of 45 degrees with respect to the tip direction of the lever portion, and the tip shape thereof is the same as the tip shape of the lever portion 23. It is formed into a shape. When the ball valve 10 is embedded at a relatively deep position, the operation member engagement portions 25a and 25b are formed, for example, by connecting the pipe-like operation member 24 to the tip of the lever portion 23 and the operation member engagement portions 25a and 25b. The ball valve 10 is opened and closed by rotating the valve body opening / closing lever 21 sequentially in a predetermined direction, for example, by rotating each 30 degrees in three portions. I can do it.
[0017]
4 and 5 show an example in which the ball valve 10 provided with the valve body opening / closing display device 20 is used as a repair valve for an underground fire hydrant 31 installed in a valve box 30, and FIG. FIG. 5 shows the valve state, and FIG. 5 shows the valve closed state.
[0018]
First, FIG. 4 shows a valve open state during normal use in which the opening 18 of the valve body 11 is in an open position that matches the upper opening 14 of the valve box 12. Therefore, the lever part 23 of the valve body opening / closing lever 21 is inclined 45 degrees to the left, and the display parts 20a, 20b of the opening / closing display device 20 are oriented in the vertical direction.
[0019]
In this state, the lever part 23 of the valve body opening / closing lever 21 is directly operated by hand, or, as indicated by an imaginary line in the figure, the operation member 24 is connected to the operation member engaging part 25a facing upward on the right side. The lower end is engaged to rotate the valve body opening / closing lever 21 by a predetermined amount. Next, the operation member 24 is sequentially engaged with the lever portion 23 and the operation member 24 is sequentially engaged with the left operation member engagement portion 25b. 5 to achieve the valve closing state shown in FIG.
[0020]
In the valve-closed state shown in FIG. 5, the closing portion 19 of the valve body 11 is in the closed position where the upper opening 14 of the valve box 12 is closed, the lever portion 23 is tilted 45 degrees to the right, and the display portion of the opening / closing display device 20 20a, 20b will be in the state which faced the horizontal direction.
[0021]
Therefore, when viewing from the upper opening of the valve box 30, the display units 20a and 20b indicate that the display units 20a and 20b of the open / close display device 20 are in the open state when the display units 20a and 20b face the vertical direction and are hardly visible. It can be easily confirmed from above the valve box 30 that the valve is in a closed state when is facing the horizontal direction and visible from above. In addition, the display units 20a and 20b can be appropriately colored or glossed to improve visibility.
[0022]
FIG. 6 is a front view of a ball valve showing another shape example of the open / close display device, and FIGS. 7 and 8 use the ball valve provided with the open / close display device as a repair valve for an underground fire hydrant installed in the valve box. FIG. 7 shows the opened state, and FIG. 8 shows the closed state. In the following description, the same components as those of the above-described embodiment are given the same reference numerals, and detailed description thereof is omitted.
[0023]
The open / close display device 26 shown in this embodiment is similar to the above-described embodiment in that the display portions 26a and 26b are formed of small protrusions at symmetrical positions on both sides in the valve shaft radial direction from the lever base end portion 22 of the valve body opening / closing lever 21. And an arrow-shaped portion 26c is provided at the tip of the display portion 26a that faces the downstream side in the fluid flow direction when the valve is opened. By providing such an arrow-shaped part 26c, the flow direction of the fluid in the ball valve 10 can be confirmed, and it can be more easily recognized that the valve is open.
[0024]
In this embodiment, the ball valve is illustrated as a valve that opens and closes by rotating the valve body around the valve shaft. However, the present invention can also be applied to other types of valves, such as butterfly valves. In addition, the display part can be integrally formed at the lever base end part to reduce the number of parts and the cost, but another member may be fixed with a bolt or the like.
[0025]
Further, as shown in FIG. 9, the main valve shaft 16 and the sub valve shaft 17 are protruded from the valve box 12, a valve body opening / closing lever 41 is provided on the main valve shaft 16, and an open / close display device 42 is provided on the sub valve shaft 17. Can also be provided. In this case, the main valve shaft 16 may be equipped with valve body opening / closing means other than the valve body opening / closing lever 41, for example, a gear type.
[0026]
In addition, since a normal valve body opening / closing lever has a lever portion that extends linearly from the base end portion, when the opening / closing display device is provided, the opening / closing display device is hidden behind the lever portion so that it cannot be seen. However, when the distal end side 43a of the lever portion 43 is offset outward, for example, as shown in FIG. 10, the open / close display device 44 has a lever proximal end portion. 45 (radial direction) can be provided.
[0027]
Further, the open / close display device is preferably made to visually recognize both the open state and the closed state, but may be formed so that only the open state or only the closed state can be visually recognized. For example, as shown in FIG. 10, it can be seen from above the valve box that the open / close display device 44 protrudes from the lever base end portion 45 in the closed state, but in the open state, as shown in FIGS. The open / close display device 44 may be difficult to visually recognize from above the valve box. Further, like the open / close display device 46 shown in FIG. 13, it protrudes to the side of the lever base end portion 45 in the closed state, and is hidden under the lever base end portion 45 in the open state as shown by an imaginary line. There may be.
[0028]
【The invention's effect】
As described above, according to the valve body open / close display device of the present invention, the open / close state of the ball valve or the like can be easily confirmed without impairing the opening / closing operation of the valve body and without impairing the installation property. .
[Brief description of the drawings]
FIG. 1 is a front view showing an open state of a ball valve provided with a valve body opening / closing display device.
FIG. 2 is a sectional side view showing the closed state.
FIG. 3 is a front view of a valve body opening / closing lever integrally formed with a valve body opening / closing display device;
FIG. 4 is a front view showing a valve opening state when a ball valve with a valve body opening / closing display device is used as a repair valve for an underground fire hydrant installed in a valve box.
FIG. 5 is a front view of the valve closing state.
FIG. 6 is a front view of a ball valve showing another shape example of the open / close display device.
FIG. 7 is a front view showing a valve opening state when a ball valve provided with a valve body opening / closing display device of another shape is used as a repair valve for an underground fire hydrant.
FIG. 8 is a front view of the valve closing state.
FIG. 9 is a schematic side view showing an example in which an opening / closing display section is provided on the auxiliary valve shaft.
FIG. 10 is a schematic plan view of a closed state showing still another shape example of the open / close display device.
FIG. 11 is a schematic front view of the same opened state.
FIG. 12 is a schematic plan view of the same open state.
FIG. 13 is a schematic front view of a closed state showing still another shape example of the open / close display device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Ball valve, 11 ... Valve body, 12 ... Valve box, 13 ... Lower opening, 14 ... Upper opening, 15 ... Valve shaft insertion hole, 16 ... Main valve shaft, 17 ... Sub valve shaft, 18 ... Opening, 19 DESCRIPTION OF SYMBOLS ... Blocking part, 20 ... Open / close display device, 20a, 20b ... Display part, 21 ... Valve body opening / closing lever, 22 ... Lever base end part, 23 ... Lever part, 24 ... Operation member, 25a, 25b ... Operation member engagement 26: Open / close display device, 26a, 26b ... Display unit, 30 ... Valve box, 31 ... Underground fire hydrant, 41 ... Valve body open / close lever, 42 ... Open / close display device, 43 ... Lever portion, 44 ... Open / close display device, 45 ... Lever base end, 46 ... Open / close display device

Claims (6)

A valve body opening / closing display device for displaying an open / closed state of an underground buried type repair valve, wherein a base end portion of a valve body opening / closing lever is fixed to a valve shaft protruding from a valve box, and the valve body opening / closing lever is A lever portion extending in the valve shaft radial direction from the base end portion, and an operation member for indirectly operating the valve body opening / closing lever that protrudes from the intermediate portion of the lever portion to both sides of the lever portion. and an operation member engaging portion for a display unit for displaying the opening and closing direction of the valve body protrudes in the radial direction around the valve stem, and the projection amount to less than the length of the valve opening and closing lever A valve body opening / closing display device characterized by that.   The valve body opening / closing display device according to claim 1, wherein the display unit is provided integrally with the valve body opening / closing lever.   The display section is provided so as to be parallel to the fluid flow direction when the valve is opened, and the display section that protrudes downstream in the fluid flow direction when the valve is opened has an arrow shape. The valve body opening / closing display device described.   The valve body opening / closing lever is mounted on the valve shaft so that the lever turning position in the valve-opening state and the lever turning position in the valve-closing state are symmetrical with respect to a vertical line centering on the valve shaft. The valve body opening / closing display device according to claim 1, wherein the valve body opening / closing display device is provided. A valve body opening / closing display device for displaying an open / closed state of an underground buried type repair valve, wherein a valve body opening / closing means is provided on one valve shaft protruding from a valve box, and the valve body opening / closing lever includes An operation for engaging a lever portion extending in the valve shaft radial direction from the end portion and an operation member for indirectly operating the valve body opening / closing lever that protrudes from the intermediate portion of the lever portion to both sides of the lever portion. A valve body opening and closing characterized by having a display portion that displays the opening and closing direction of the valve body on the other valve shaft that protrudes from the valve box and protrudes in the radial direction about the valve shaft Display device. The valve according to any one of claims 1 to 5, wherein the operating member engaging portion protrudes from an intermediate portion of the lever portion with an opening angle of 45 degrees with respect to a distal end direction of the lever portion. Body open / close display device .

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