JP6444343B2 - Cap-operated repair valve - Google Patents

Description

  The present invention relates to a cap-operated repair valve.

  The repair valve has flanges formed at both ends of the short straight pipe and is disposed between a fire hydrant or an air valve that branches vertically upward from a water pipe buried in the horizontal direction. Normally, the short straight line is in communication, but when repairing the fire hydrant and the air valve, the valve is rotated to close the short straight line in order to temporarily shut off the water from the water line. The valve body rotates within a range of about 90 degrees to communicate and block the short straight pipe line.

As a structure for rotating the valve body, there is a structure in which the rotation shaft of the valve body is projected outward from the repair valve as it is, and a lever orthogonal to the rotation shaft is attached to the end portion. Since the lever rotates in the range of 90 degrees, when the repair valve is viewed from above, the lever is attached so that it rotates 45 degrees to one side and 45 degrees to the other side while pulling to the near side.
In addition, “O” representing the meaning of communication is displayed on one side of the repair valve where the lever rotates, and “S” representing blocking is displayed on the other side. When the lever is tilted to either side, it stops at a position close to the indication of “O” or “S”, so it can be seen whether the repair valve is open or closed.

On the other hand, although the lever type is simple in construction, the operator must grasp and operate the lever from above, and the lever type cannot be used when the distance between the repair valve and the ground surface is long. Instead, a cap-operated repair valve is also used in which a gear box is installed and a rotatable cap is arranged, and the rotation of the cap is transmitted to the rotating shaft to rotate.
If it is a cap operation type | formula, even when a repair valve is arrange | positioned in the deep position, a handle can be inserted in a cap from the ground surface and can be rotated.

Repair valve for water supply JWWA B 126 Japan Water Works Association Public Permanent Investigation Committee Revised on November 26, 2013

  In the case of the above-described cap operation type, it does not simply rotate 90 degrees as in the lever type, but at least several rotations (for example, 2.5 rotations), the opening degree was not apparent in appearance. That is, once the handle was attached and turned in the opening direction or in the closing direction, it could be confirmed that the handle was open or closed if it did not turn. Therefore, misunderstandings occur, and it is often the case that a large amount of water squirts when you try to remove the fire hydrant when you think it is closed.

  By the way, a gate valve is used as a valve for communicating and closing the water pipe, and there is a cap operation type of the gate valve. In this case, the operator inserts the handle into the cap from the ground surface side and rotates the cap in a predetermined direction. In particular, in the case of a gate valve, the rotation is usually performed about 10 times, and there is a demand for knowing the opening degree of the valve body also in this gate valve. In the case of a gate valve, there is no fire hydrant or air valve above the water pipe, and the cap part just protrudes from the valve box. There is known a device that displays a valve body opening degree by providing a reduction gear that reduces the rotation to 1/10 or less.

However, in the case of a repair valve, since a fire hydrant, an air valve, etc. are arranged immediately above, a reduction gear cannot be installed around the rotation axis of the cap like a gate valve.
The present invention provides a cap operation type repair valve capable of knowing the opening even if it is a cap operation type.

  The present invention relates to a valve box in which flanges are formed at both open ends to form a straight pipe line, and a worm whose rotation axis is orthogonal to the straight pipe line. A valve body that is connected to the wheel shaft and communicates with or closes the straight pipe line; and a gear box that meshes with the worm wheel shaft and has a worm shaft that is disposed toward the pipe direction of the straight pipe line; A cap-operated repair valve having a cap connected to the worm shaft and oriented in a pipe line direction of the straight pipe line, wherein the gear box is connected to a side surface of the valve box and extends from the valve box to the valve box. The worm shaft is formed so as to protrude in the radial direction of the straight pipeline, and the worm shaft is rotatable at a position shifted in the circumferential direction of the straight pipeline with respect to the worm wheel shaft accommodated in the gear box. Supported by the worm wheel shaft The worm wheel shaft protrudes through the gear box radially outward, and an opening indicating rotating body is attached to the tip of the protruding worm wheel shaft. The display rotator displays “open” at one end and “closed” at the other end in a rotation range of approximately 90 degrees when viewed from the axial direction of the worm shaft while avoiding the installation position of the cap. It is as a configuration.

  In the above-described configuration, the cap-operated repair valve includes a valve box in which flanges are formed at both open ends to form a straight pipe line, and a valve body that is rotatably interposed in the straight pipe line of the valve box. The straight pipe line is communicated or closed by rotating the valve body. A rotating shaft of a worm wheel shaft arranged in a direction orthogonal to the straight pipe line is connected to the valve body, and the valve body can be rotated by rotating the worm wheel shaft.

  Since the worm shaft of the gear box is arranged toward the pipe direction of the straight pipe line and meshes with the worm wheel shaft, the worm wheel shaft can be rotated in any direction by rotating the worm shaft. Can be rotated. Since a cap oriented in the pipe direction of the straight pipe line is connected to the worm shaft, the worm shaft can be rotated through the cap by inserting a handle into the cap from the so-called ground surface side.

  By the way, the gear box is connected to a side surface of the valve box so as to protrude from the valve box in the radial direction of the straight pipe line, and the worm shaft is accommodated in the gear box. The wheel shaft is rotatably supported at a position shifted in the circumferential direction of the straight pipe with respect to the wheel shaft, and meshes with the worm wheel shaft. Further, the worm wheel shaft protrudes through the gear box outward in the radial direction, and an opening indication rotating body is attached to the tip of the protruding worm wheel shaft. Since the worm shaft is rotatably supported at a position shifted in the circumferential direction of the straight pipe with respect to the worm wheel shaft accommodated in the gear box, the same opening degree at the tip of the worm wheel shaft The display rotator is disposed at a position avoiding the installation position of the cap, and is rotated within a rotation range of approximately 90 degrees at the same position.

  Further, when the worm shaft rotates in a rotation range of approximately 90 degrees as viewed from the ground surface side, that is, from the ground surface side, the opening display rotating body displays “open” at one end and the other end at the other end. “Closed” is displayed, and the state of the opening can be visually recognized from the surface side.

  According to the cap operation type repair valve of the present invention, the opening degree of the valve body can be displayed even if it is a cap operation type.

It is a top view of the cap operation type repair valve concerning a 1st embodiment. It is a front view of the repair valve. It is a right view of the repair valve. It is a partially broken perspective view of the repair valve. It is a top view of the cap operation type repair valve concerning a 2nd embodiment. It is a front view of the repair valve. It is a right view of the repair valve. It is a side view of a scale needle. It is a front view of a scale needle. It is a top view of the cap operation type repair valve concerning a 3rd embodiment. It is a front view of the repair valve. It is a right view of the repair valve. It is sectional drawing of an opening display rotary body. It is a top view of an opening degree display rotary body. It is a top view of an opening degree display rotary body. It is a perspective view of the opening display rotary body concerning 4th Embodiment. It is a perspective view of one display state of the same opening degree display rotator. It is a perspective view of the other display state of the same opening display rotary body.

(First embodiment)
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 is a plan view of a cap-operated repair valve according to an embodiment of the present invention, FIG. 2 is a front view of the repair valve, and FIG. 3 is a right side view of the repair valve. FIG. 4 is a partially broken perspective view of the repair valve.
In the figure, the valve box 10 is composed of an upper part 11 and a lower part 12. The upper part 11 is formed of a cylindrical portion 11a that penetrates in the vertical direction and a flange 11b that expands in diameter from the upper end of the cylindrical portion 11a. The cylindrical portion 11a has a lower opening larger than the upper opening, and can accommodate a valve body (ball valve body) 20 described later from below. In addition, a shaft support tube portion 11c protruding in a cylindrical shape is provided on the side surface to insert the worm wheel shaft 30 therein.

  The lower part 12 is formed in a ring shape having substantially the same shape as the flange 11b, and is bolted from the lower side with respect to the fixed piece 11d formed to protrude outward at the outer periphery of the lower end of the cylindrical part 11a. Stopped and fixed. The fixing pieces 11d are formed at four locations, and the lower part 12 and the cylinder portion 11a are bolted and fixed at four locations. In addition, the lower part 12 is bolted and fixed to a flange of a water pipe (not shown) as a flange.

The opening of the lower part 12 has substantially the same diameter as the opening on the upper side of the cylindrical part 11a, and is smaller than the diameter of the valve body 20. Thereby, when the valve body 20 is accommodated in the cylinder part 11a, it is supported rotatably inside, but cannot come out outside. In addition, valve seats 13a and 13b formed of an elastic body as a seal member are interposed inside the opening of the cylindrical portion 11a and the opening inside of the lower part 12.
Thus, the valve box 10 is formed with flanges at both open ends to form a straight pipe line.

  Although the valve body 20 is substantially spherical, it forms a pipe line that is hollowed out. The opening diameter of this pipe line is substantially the same diameter as the opening of the lower part 12 and the cylinder part 11a. The valve box 10 and the valve body 20 constitute a so-called ball valve. Accordingly, the valve body 20 rotates within a range of approximately 90 degrees within the valve box 10, and in a state where the opening of the conduit of the valve body 20 coincides with the opening of the lower part 12 and the cylindrical portion 11 a, When the valve body 20 is rotated 90 degrees and the pipe line of the valve body 20 is orthogonal to the opening axis of the cylindrical portion 11a, the ball valve closes the pipe line.

  The valve body 20 needs to rotate within a range of 90 degrees to change the opening direction of the pipe line, and the worm wheel shaft 30 can be inserted and engaged with the side surface of the valve body 20 serving as the rotation axis. It has become. The worm wheel shaft 30 is inserted into the cylindrical portion 11 a from a shaft supporting cylindrical portion 11 c that protrudes laterally from the cylindrical portion 11 a, and its tip engages with the side surface of the valve body 20. Therefore, when the worm wheel shaft 30 is rotated, the valve body 20 is rotated. The worm wheel shaft 30 is provided with an O-ring, and is supported so as to be rotatable in a watertight manner with the shaft support cylinder portion 11c.

  As described above, the valve body 20 is rotatably interposed in the straight pipe line of the valve box 10, and the rotation axis thereof is connected to the worm wheel shaft 30 orthogonal to the straight pipe line. Then, the valve body 20 rotates with the rotation of the worm wheel shaft 30 to communicate or close the straight pipe line.

  The worm wheel shaft 30 protrudes from the shaft support tube portion 11c, and the gear box 40 is bolted and fixed to the shaft support tube portion 11c so as to substantially accommodate the protruding portion. Inside the gear box 40, a gear groove 31 that can mesh with the worm gear is formed on the peripheral surface of the worm wheel shaft 30, and a worm shaft 41 that meshes with the gear groove 31 is also accommodated. Since the worm wheel shaft 30 is supported by the shaft support tube portion 11c so as to protrude sideways perpendicular to the tube portion 11a, and the worm shaft 41 is supported so as to mesh with the gear groove 31 on the peripheral surface thereof. The worm shaft 41 is disposed in the direction of the straight line formed by the valve box 10. A cap 50 is connected to the upper end of the worm shaft 41, and a collar 51 extending to the periphery is formed at the lower end of the cap 50. The cap 50 is used for a normal cap-operated valve. The cap 50 is formed such that a square column 52 extends above the rod 51, and a handle having a square recess (not shown) is pressed from above. Engage.

  Thus, in the gear box 40, the worm wheel shaft 30 and the worm shaft 41 are held in mesh with each other, and the worm shaft 41 is arranged in the direction of the straight line of the cylindrical portion 11a. It is supported in the installed state. Further, a cap is connected to the worm shaft 41 so as to be oriented at the end of the straight pipe line in the pipe direction. The cap operation type repair valve is comprised by the above structure.

As described above, the gear box 40 is connected to the side surface of the valve box 10 and is formed so as to protrude from the valve box 10 in the radial direction of the straight pipe line. Since the worm shaft 41 meshes with the worm wheel shaft 30 accommodated in the gear box 40, the worm shaft 41 is naturally supported rotatably at a position shifted in the circumferential direction with respect to the straight pipe path of the cylindrical portion 11a. It will be.
On the side of the worm wheel shaft 30 opposite to the side engaged with the valve body 20, the tip is narrowed and protrudes through the gear box 40. A scale needle 61 is connected to the protruding portion. The scale needle 61 is connected to the tip of the worm wheel shaft 30 and protrudes in the radial direction from the shaft core like a watch hand. FIG. 3 shows the mounting angle of the scale needle 61 so that it can be seen. In terms of the short hand of the watch, the range of 90 degrees from the 10:30 position to the 1:30 position is the movable range. In FIG. 3, the scale needle 61 is located at 10:30. At this time, the valve body 20 with which the worm wheel shaft 30 is engaged is in a state in which the communication port is directed in the vertical direction, and the straight pipe line is in communication. It is. On the other hand, the scale needle 61 indicated by a two-dot chain line in FIG. 3 is located at 1:30, but at this time, the valve body 20 with which the worm wheel shaft 30 is engaged is in a state where the communication port is rotated 90 degrees. Therefore, the straight pipe line is in a closed state.

  The tip of the scale needle 61 is formed in a chevron shape having a top, and is bent toward the valve box 10 side by 90 degrees when approaching the rotational axis of the scale needle 61 slightly from the chevron part. Assuming that the bent tip portion is a pentagonal needle tip 61a and that the scale needle 61 is at the 12 o'clock position, the plane of the needle tip 61a is in a direction perpendicular to the straight pipe path of the cylindrical portion 11a, and is installed. Sometimes in a direction that is almost horizontal. As a result, when the operator looks down from above in the installed state, the pentagonal needle tip 61a is positioned in a state of being almost horizontal, which makes it very easy to visually recognize. Since the scale needle 61 is held at the 10:30 position or the 1:30 position, the needle tip 61a is inclined by 45 degrees with respect to the horizontal plane. Is sufficiently visible.

  Since the gear box 40 needs to be inserted so that the worm shaft 41 does not come out, the upper surface portion is covered with a lid 42. The lid 42 covers the gear box 40 in a state substantially parallel to the horizontal plane and is fixed with bolts. A scale plate 62 parallel to the horizontal plane is fixed by using this bolted fixing portion. The scale plate 62 is formed such that an edge 62a is positioned at a position that is parallel to the rotation range of the scale needle 61 and does not interfere with the scale needle 61, and the scale needle 61 is moved to the edge 62a. The notation which displays the opening degree of the valve body 20 along the range is described.

  Since FIG. 1 is a plan view of this cap operation type repair valve, the scale plate 62 arranged in the horizontal direction can be seen from directly above. When the scale needle 61 is at the 10:30 position, “O” (meaning open) is printed as the opening degree notation at the position indicated by the needle tip 61a. When the scale needle 61 is at the 1:30 position, “S” (meaning closed) is printed as the opening degree notation at the position indicated by the needle tip 61a.

  Thus, the worm wheel shaft 30 protrudes through the gear box 40 radially outward, and a scale needle 61 as an opening indication rotating body is attached to the tip of the protruding worm wheel shaft 30. It has been. The opening indication rotating body can be grasped as a structure including not only the scale needle 61 but also the stationary scale plate 62. The opening display rotating body displays “open” at one end in a rotation range of approximately 90 degrees when viewed from the axial direction of the worm wheel shaft while avoiding the installation position of the cap 50, and “ “Closed” is displayed.

The opening indication rotating body has a scale needle 61 that is connected to the worm wheel shaft 30 and extends in the radial direction, and the scale needle 61 has the axial direction of the worm shaft as a 12 o'clock direction. On the other hand, it rotates together with the valve body 20 in the range from the rotation position of plus 45 degrees (10:30) to the rotation position of minus 45 degrees (1:30). Further, the scale plate 62 as a part of the opening indication rotating body is disposed between the worm wheel shaft 30 and the cap 50, and is disposed in parallel with a plane orthogonal to the straight pipe path. On the scale plate 62, a notation for displaying the opening degree of the valve body 20 corresponding to the needle point 61a which is the tip position of the scale needle 61 is displayed.
In this embodiment, the scale plate 62 is formed with an edge 62a corresponding to the movable range of the scale needle 61. The scale needle 61 moves along the edge 62a and the tip of the scale needle 61 is placed on the scale plate. It is bent toward the 62 side, and the needle tip 61a is positioned closer to the cap 50 than the scale plate 62 for display.

  The tip position of the worm wheel shaft 30 is inevitably below the cap 50 having the flange 51, but the cap 50 is circumferentially separated from the worm wheel shaft 30 because the worm shaft 41 meshes with the side surface of the worm wheel shaft 30. Therefore, the position is barely visible when looking down from above. Further, as shown in FIG. 2, since the portion protruding from the gear box 40 extends in the radial direction, the worm wheel shaft 30 is not unnecessarily lengthened and the entire apparatus is not enlarged.

(Second Embodiment)
FIG. 5 is a plan view showing a cap-operated repair valve according to the second embodiment, FIG. 6 is a front view of the repair valve, and FIG. 7 is a right side view of the repair valve. It shows by. FIG. 8 shows the scale needle by a side view, and FIG. 9 shows the scale needle by a front view.
In the present embodiment, the configuration of the opening display rotating body is different from that of the first embodiment, and the description of the configuration common to the first embodiment is omitted.

  Whereas the scale needle 61 is formed by bending a substantially plate-like member, the scale needle 161 of the present embodiment has a thickness of about 5 mm to 10 mm and penetrates the tip of the worm wheel shaft 30. A base portion 161b to be fixed and a needle portion 161c extending from the base portion 161b in the radial direction and gradually narrowing at the distal end side are integrally formed. The tip is referred to as the needle tip 161a.

  As shown in FIG. 7, the thick scale needle 161 rotates in the range from the 10:30 position to the 1:30 position of the needle portion 161 c. As shown in FIG. 9, the needle tip 161 a has a cylindrical shape when viewed in cross section, and the peripheral surface is a cylindrical side surface. If this part is painted red, for example, when the scale needle 161 is rotated within a range of 90 degrees, half of the cylindrical surface can be looked down from above when looking down from above, and visibility is good.

On the other hand, the scale plate 162 is formed with a slit 162b so as to avoid the movable range of the scale needle 161. The movable range of the scale needle 161 is completely stored as the slit 162b, not the edge 62a. At both ends in the longitudinal direction of the slit, “O” (open) and “S” (closed) indicating the opening degree of the valve body 20 are indicated.
When the scale needle 161 is in the 10:30 state, the needle tip 161a is in a position closest to the notation “O” in the slit 162b, and the valve body 20 is in a communicating state. When the worm wheel shaft 30 is rotated 90 degrees and the scale needle 161 is in the state of 1:30, the needle tip 161a moves to the position closest to the notation of “S” in the slit 162b, and the valve body 20 It becomes blocked.

  As described above, the scale plate 162 is provided with the slit 162b serving as an opening window corresponding to the movable range of the needle portion 161c of the scale needle 161, and the needle tip 161a of the scale needle 161 is provided with the slit (opening window). ) The display is moved within the 162b.

(Third embodiment)
FIG. 10 is a plan view showing a cap operation type repair valve according to the third embodiment, FIG. 11 is a front view of the repair valve, and FIG. 12 is a right side view of the repair valve. It shows by. FIG. 13 is a sectional view showing the opening degree indicating rotator, FIG. 14 is a plan view showing the opening degree indicating rotator, and FIG. The state seen from the angle which can be visually recognized is shown with the top view.
This embodiment is different from the first and second embodiments in the configuration of the opening display rotating body, and the description of the configuration common to the first embodiment is omitted.

  In the first and second embodiments, in the opening display rotating body, the member connected to the worm wheel shaft 30 and rotating is a so-called clock-like member, but in this embodiment, the worm wheel shaft 30 A cylindrical body 261 that covers all or part of the cylinder body 261 is connected to the worm wheel shaft 30, so that the surface of the cylindrical body 261 also rotates at a predetermined position as the worm wheel shaft 30 rotates. A scale notation is displayed on the outer surface of the cylindrical body 261. FIG. 15 shows a state in which the cylindrical body 261 is viewed from an angle at which this notation can be viewed at a time. Since the worm wheel shaft 30 rotates 90 degrees, a pattern in which the red coating range gradually changes from narrow to wide is applied to a range of 90 degrees on the peripheral surface of the cylindrical body 261, and further, The letter “O” (open) is displayed so as to be adjacent to the part, and the letter “S” (closed) is displayed so as to be adjacent to the narrowest part. The distance from the center of the character “O” to the center of the character “S” is approximately 90 degrees.

  FIG. 10 is a plan view when the valve body 20 is in a communicating state. At this time, the letter “O” on the peripheral surface of the cylindrical body 261 is at the 12 o'clock position. When looking down from above, the letter “O” is clearly visible because it is at the 12 o'clock position. At this time, since the character “S” is at the 9 o'clock position, the character “S” is almost invisible when looking down from above. Then, when the worm wheel shaft 30 is rotated and rotated 90 degrees, the valve body 20 is closed as shown in FIG. 14, and the letter “S” at the 9 o'clock position is 12 o'clock. Since it is in position, it will be clearly visible from above. Also, since the letter “O” comes to the 3 o'clock position, the letter “O” is hardly visible when looking down from above.

  The cylindrical body 261 may have a complete cylindrical surface, or may not have a cylindrical surface in a portion not related to display as in this embodiment. In this sense, a cylindrical body that covers all or part of the worm wheel shaft 30 may be used. Moreover, a cylindrical surface is only an example and is good also as a polygonal cylinder surface.

(Fourth embodiment)
It goes without saying that the present invention is not limited to the embodiments described above.
FIG. 16 is a perspective view showing an opening degree display rotator according to the fourth embodiment, FIG. 17 is a perspective view showing one display state of the opening degree indication rotator, and FIG. The other display state of the same opening degree indication rotary body is shown with the perspective view.
The opening display rotating body 361 has two surfaces 361 a and 361 b that are orthogonal to each other, and is connected to the worm wheel shaft 30. One surface 361a orthogonal to one end of the rotation range of the worm wheel shaft 30 is parallel to a plane orthogonal to the straight pipe line, and the other surface 361b orthogonal to the other end of the rotation range of the worm wheel shaft 30 is a straight tube. It is parallel to a plane perpendicular to the road. In this way, when viewed from the side where the cap 50 is disposed, one of the surfaces 361a and 361b perpendicular to the opening of the valve body 20 is parallel to the horizontal plane and the other is orthogonal to the horizontal plane. Therefore, when looking down from above, only the surface representing the opening degree of the valve body 20 is visible.

  In embodiment mentioned above, the valve body 20 and the valve case 10 are formed with the ball-type valve body. However, it is also possible to form with a butterfly valve body.

Needless to say, the present invention is not limited to the above embodiments. It goes without saying for those skilled in the art,
-Applying the combination of the mutually replaceable members and configurations disclosed in the above-described embodiments as appropriate-The above-described embodiments are not disclosed in the above-described embodiments, but are publicly known techniques. The members and structures that can be mutually replaced with the members and structures disclosed in the above are appropriately replaced, and the combination is changed and applied. It is an embodiment of the present invention that a person skilled in the art appropriately replaces the members and configurations that can be assumed as substitutes for the members and configurations disclosed in the above-described embodiments, and changes the combination to apply. It is disclosed as.

DESCRIPTION OF SYMBOLS 10 ... Valve box, 11 ... Upper part, 11a ... Tube part, 11b ... Flange, 11c ... Shaft support cylinder part, 11d ... Fixed piece, 12 ... Lower part, 13a ... Valve seat, 13b ... Valve seat, 20 ... Valve body , 30 ... Worm wheel shaft, 31 ... Gear groove, 40 ... Gear box, 41 ... Worm shaft, 42 ... Lid, 50 ... Cap, 51 ... Saddle, 52 ... Square pillar, 61 ... Needle, 61a ... Needle tip, 62 ... Scale plate, 62a ... Edge, 161 ... Scale needle, 161a ... Needle tip, 161b ... Base, 161c ... Needle part, 162 ... Scale plate, 162b ... Slit, 261 ... Cylindrical body, 361 ... Opening display rotating body.

Claims (2)

A valve box formed with flanges at both open ends to form a straight line;
A valve body rotatably interposed in the straight pipe line of the valve box, the rotation axis of which is connected to a worm wheel shaft orthogonal to the straight pipe line, and communicating or closing the straight pipe line;
A gear box having a worm shaft that meshes with the worm wheel shaft and is disposed toward the pipe direction of the straight pipe;
A cap-operated repair valve having a cap connected to the worm shaft and oriented in the pipe direction of the straight pipe line,
The gear box is connected to a side surface of the valve box and is formed so as to protrude in the radial direction of the straight pipe line from the valve box,
The worm shaft is rotatably supported at a position shifted in the circumferential direction of the straight pipe with respect to the worm wheel shaft accommodated in the gear box, and meshes with the worm wheel shaft.
The worm wheel shaft protrudes through the gear box outward in the radial direction, and an opening indication rotating body is attached to the tip of the protruding worm wheel shaft,
The same opening indication rotating body displays “open” at one end in a rotation range of approximately 90 degrees when viewed from the axial direction of the worm wheel shaft while avoiding the installation position of the cap, and “ "Closed" is displayed ,
The gear box is covered with a bolted and fixed lid that is arranged in parallel with a plane orthogonal to the straight pipe line,
The opening indication rotating body has a scale needle connected to the worm wheel shaft and extending in the radial direction, and the scale needle is minus 45 degrees from a rotational position of plus 45 degrees with respect to the axial direction of the worm shaft. Rotate with the valve body in the range up to the rotation position of degrees,
Furthermore, between the worm wheel shaft and the cap, a scale plate is disposed in parallel with a plane orthogonal to the straight pipe path by using a bolted fixing portion of the lid body. The tip of the scale needle is parallel to the rotation range of the scale needle and has an edge corresponding to the movable range of the scale needle at a position that does not interfere with the scale needle. Is displaying a notation that displays the opening of the valve body,
The scale needle moves along the same edge, the tip of the scale needle is bent toward the scale plate, and the needle tip is positioned on the cap side with respect to the scale plate to display. Cap operation type repair valve. A valve box formed with flanges at both open ends to form a straight line;
A valve body rotatably interposed in the straight pipe line of the valve box, the rotation axis of which is connected to a worm wheel shaft orthogonal to the straight pipe line, and communicating or closing the straight pipe line;
A gear box having a worm shaft that meshes with the worm wheel shaft and is disposed toward the pipe direction of the straight pipe;
A cap-operated repair valve having a cap connected to the worm shaft and oriented in the pipe direction of the straight pipe line,
The gear box is connected to a side surface of the valve box and is formed so as to protrude in the radial direction of the straight pipe line from the valve box,
The worm shaft is rotatably supported at a position shifted in the circumferential direction of the straight pipe with respect to the worm wheel shaft accommodated in the gear box, and meshes with the worm wheel shaft.
The worm wheel shaft protrudes through the gear box outward in the radial direction, and an opening indication rotating body is attached to the tip of the protruding worm wheel shaft,
The same opening indication rotating body displays “open” at one end in a rotation range of approximately 90 degrees when viewed from the axial direction of the worm wheel shaft while avoiding the installation position of the cap, and “ "Closed" is displayed ,
The opening indication rotating body has two surfaces orthogonal to each other and is connected to the worm wheel shaft, and the one surface orthogonal to one end of the rotation range of the worm wheel shaft is a plane orthogonal to the straight pipe line. The other surface orthogonal to the other end of the rotation range of the worm wheel shaft is parallel to the plane orthogonal to the straight pipe line, and is orthogonal to the surface when viewed from the side where the cap is disposed. Is a cap-operated repair valve characterized by the indication of opening .

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