JPH032775Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a Gotsukuru valve that opens and closes a flow path by interposing a through hole or a blind plate between split valve bodies that form a flow path.

[Prior art]

In general, a piping flow path is provided with a shutoff valve to cut off communication with other parts when maintenance or inspection of equipment or equipment constituting the flow path or when equipment or equipment breaks down.

Shutoff valves used for such purposes are
Due to the need to completely prevent harmful gases, liquids, etc. from entering, some valves allow internal leaks, and some general valves (ball valves, ball valves, gate valve) cannot be used. Therefore, a highly reliable Gotsukuru valve is used, which has no internal leaks and whose open/closed state can be easily checked.

As shown in FIG. 1, the conventional Gotsukuru valve has a through hole 106 that opens the flow path 104 and a blind plate 10 that closes the flow path 104 between the divided valve bodies 105 that form the flow path 104.
7 are arranged in parallel, and the connecting flange 103 of the split valve main body 105 is attached.
are fastened with bolts 101.

The Gotsukuru valve configured in this way is attached to a pipe (not shown) via the flange 108,
When forming a flow path, as shown in FIG. The plate 107 side is positioned in the flow path 104 to block the flow path 104,
The goggle plate 102 protruding outward from the split valve body 105 is either on the through hole 106 side or on the blind plate 107.
The open/closed state of the flow path 104 can be determined by visually checking the sides.

[The problem that the idea aims to solve]

However, in the case of the above-mentioned Gotukul valve,
The following problems arose.

(1) When switching the valve open/close, loosen the many bolts 101, remove the bolts 101 completely, set the goggle plate 102 to the closed side or the open side, insert the bolts 101 again, and then tighten the bolts 101. This operation is time-consuming.

(2) When switching between opening and closing of the Gotsukuru plate 102, it is necessary to widen the distance between the surfaces of the connecting flange 103, but since piping (not shown) is connected to both ends of the split valve body 105, the distance between the surfaces can be increased. It was difficult to expand and required equipment to do so.

The present invention solves the above-mentioned drawbacks of the prior art and provides a goggle valve with a simplified structure and improved operability.

[Means to solve the problem]

In order to achieve the above object, the present invention installs a Gotsukuru plate, which has a through hole that opens the flow path and a blind plate that closes the flow path, between the split valve bodies that form the flow path, and connects the split valve bodies. In the gotsukuru valve in which the flanges are bolted together, a shaft hole is formed between the through hole of the gotsukuru plate and the blind plate, and the gotsukuru plate is attached to the connection flange so as to be pivotable about the shaft hole, and U so that the bolt can be removed radially outward from the tightening bolt hole.
The connecting flanges are formed in the shape of a letter, and are provided with jack bolts with right-hand threads and left-hand threads that space the flanges close to each other, and screw holes are formed in each flange into which the jack bolts are screwed. be.

[Effect]

When the flow path of the split valve main body is to be communicated, the through hole of the goggle plate is placed in the flow path, and when the flow path is blocked, a blind plate is placed in the flow path.

In addition, when switching between opening and closing the flow path, it is sufficient to loosen and remove the fastening bolts, rotate the jack bolts to widen the distance between the connecting flanges, and then rotate the Gotsukuru plate 180 degrees to switch. After that, it is sufficient to rotate the jack bolt in the opposite direction to bring the surfaces of the connecting flanges closer together, and then fasten them with the fastening bolt.

When attaching and detaching the fastening bolt, it is sufficient to attach and detach the fastening bolt with the nut loosened from the U-shaped bolt hole from the radially outer side.

Moreover, when switching the opening and closing of the flow path, all that is required is to rotate the jack bolt to widen the space between the surfaces of the connecting flanges, and then rotate the goggle plate 180 degrees, making the operation extremely easy.

〔Example〕

Embodiments of the present invention will be described based on the accompanying drawings.

FIGS. 2 to 5 show an embodiment of the Gotsukul valve of the present invention. In FIG. 4, numeral 9 denotes a dividing valve body forming a flow path 10, and one end side of these dividing valve bodies 9 is shown. A flange 11 is provided at each end to connect the split valve bodies 9 to each other, and a connecting flange 5 is provided at the other end to connect the divided valve bodies 9 to each other. There is.

As shown in FIG. 3, each of the connection flanges 5 is formed into a ring shape, and a plurality of U-shaped bolt holes 13 are formed at intervals in the circumferential direction, and the radially outer side is open. The fastening bolt 12 inserted therein can be attached and detached from the open radially outer side.

As shown in FIG. 4, a goggle plate 1 for opening and closing the flow path 10 of the split valve main body 9 is installed between each of the connecting flanges 5, as shown in FIG. As shown, it is shaped like glasses and has handles 6 at both ends thereof. A blind plate 1a for blocking a flow path is formed on one side of the goggle plate 1 for eyeglasses, and a through hole 1c for forming a flow path is formed on the other side 1b. Further, a shaft hole 2 is formed between the blind plate 1a and the through hole 1c as shown in the figure, and the connecting flange 5 is rotatably mounted around the shaft hole 2 as a pivot center.

In addition, the connection flange 5 has the parts shown in FIGS.
As shown in the figure, jack bolts 4 are provided to space the surfaces of the connecting flanges 5 close to each other.
This jack bolt 4 has a right-handed thread on one end and a left-handed thread on the other end, and a threaded hole 3 into which each threaded portion of the jack bolt 4 is screwed is formed in the connecting flange 5.

In this embodiment, the jack bolt 4 is
The upper jack bolt 4, which is provided above and below the connection flange 5, is inserted into the shaft hole 2 of the goggle plate 1.
It is inserted through and serves as the pivot axis of the Gotsukuru plate 1.

Furthermore, a cylindrical spacer 8 is interposed between the connecting flanges 5, as shown in FIG. The spacer 8 is provided in the upper and lower screw holes 3 of the connection flange 5, and the intermediate portion of the jack bolt 4 that is screwed into the screw hole 3 is inserted through the spacer 8.

As shown in FIG. 5, a ring-shaped packing 7 made of neoprene rubber or the like is interposed between the goggle plate 1 installed between the connecting flanges 5 and the flange 5. The spacer 8 restricts compression when the connecting flanges 5 are connected, and also maintains a good state of preventing leakage of the fluid in the flow path 10.

Next, the operation of this embodiment will be explained.

When the flow path 10 of the split valve body 9 is to be communicated, the through hole 1c of the Gotsukuru plate 1 is positioned in the flow path 10, and when the flow path 10 is blocked, the blind plate 1a is positioned in the flow path 10. Just let it happen.

In addition, when switching between opening and closing the flow path 10, loosen and remove the fastening bolt 12, rotate the jack bolt 4 to widen the distance between the connecting flanges 5, and then switch by rotating the goggle plate 1 by 180 degrees. If so, after switching, the jack bolts 4 may be rotated in the opposite direction to bring the surfaces of the connecting flanges 5 closer together, and then the fastening bolts 12 may be used to fasten the connections.

When attaching and detaching the fastening bolt 12, it is only necessary to attach and detach the fastening bolt 12 from the radially outer side with the nut loosened in the U-shaped bolt hole 13, and it is extremely easy to attach and detach the fastening bolt 12.

In addition, when switching the opening and closing of the flow path 10, it is only necessary to rotate the jack bolt 4 to widen the space between the surfaces of the connecting flange 5, and then rotate the goggle plate 1, so the operation is extremely simple.

Furthermore, since the spacer 8 is interposed between the connecting flanges 5, the gasket 7 can be held well and the life of the gasket 7 can be extended.

[Effect of idea]

According to the present invention, when attaching and detaching the fastening bolt, it is only necessary to attach and detach the fastening bolt from the radial direction with the nut loosened in the U-shaped bolt hole, so it is extremely easy to attach and detach the fastening bolt. be. In addition, when switching the flow path, all you have to do is rotate the jack bolt to widen the space between the connecting flanges, and then rotate the gotsukuru plate 180 degrees, making the operation extremely simple. demonstrate.

[Brief explanation of the drawing]

Figure 1 is a sectional view showing a conventional Gotsukuru valve, Figure 2
3 is a plan view showing an example of the connecting flange of the invention, FIG. 4 is a front view showing the gotsukuru plate of the invention in an open state, and FIG. FIG. 5 is a sectional view showing the vicinity of the jack bolt shown in FIG. 4. In the figure, 1 is a Gotsukuru plate, 1a is a blind plate, 1
c is a through hole, 2 is a shaft hole, 3 is a screw hole, 4 is a jack bolt, 5 is a connection flange, 9 is a split valve body,
10 is a flow path, 12 is a fastening bolt, and 13 is a bolt hole.

Claims (1)

[Scope of utility model registration request] In the Gotsukuru valve, a gotsukuru plate is installed between the split valve bodies that form a flow path, and the gotsukuru plate has a through hole that opens the flow path and a blind plate that closes the flow path, and the connecting flange of the split valve main body is bolted. A shaft hole is formed between the through hole of the Tsukuru plate and the blind plate, and the Gotsukuru plate is attached to the connection flange so as to be able to rotate freely around the shaft hole, and the bolt is radially outward from the fastening bolt hole of the connection flange. A jack bolt is formed in a U-shape so that it can be removed, and has a right-hand thread and a left-hand thread that space the flanges closely apart between the connecting flanges, and a screw hole is formed in each flange into which the jack bolt is screwed. The characteristic Gotsukuru valve.