JP3007506B2 - Shutter device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter device mainly used for piercing a gas pipe in a leak-free manner.

[0002]

2. Description of the Related Art When branching of a gas pipe is performed while passing gas through the inside, or when a hole is drilled to insert a gas bag into the gas pipe, gas flows out therefrom. Therefore, combining a shutter device between the drilling machine and the gas pipe,
There is known a so-called shutter device devised so that a drilling operation can be performed in a leak-free manner.

[0003]

However, in the case of the above-mentioned known example, since a large number of parts are combined in order to secure airtightness with opening and closing (sliding) of the shutter plate, the structure becomes complicated and the assembling is performed. Also has the disadvantage that it takes a lot of trouble.

An object of the present invention is to propose a shutter device that can reliably maintain airtightness with a simple structure.

[0005]

The construction of the shutter device according to the present invention is as follows.

A round U-shaped shutter plate slide flat groove is formed on the upper surface, a circular hole is formed in the center thereof, and a pin engagement hole is provided at both ends on the opening side of the slide flat groove. Forming a packing fitting groove, and attaching a seal ring to the upper surface around the hole, forming a shutter plate sliding groove in the horizontal direction, and forming a loop-shaped lip above and below the sliding groove; A round packing provided at both ends with a pin hole for inserting a parallel pin, and configured to be fitted into the round packing fitting groove of the lower body from above, and slidable in a slide groove of the round packing. A shutter plate formed with stoppers on both sides on the front end side and a shutter handle attached to the rear end side, and the lower body side in the center. A flat SU gasket is formed on both sides of the rear end to hold the round packing so as to be wound around from the outside. And an upper body having a configuration in which a round packing fitting groove with a parallel pin engagement hole is formed on the lower surface and on the rear end side, and which is fixed to the lower body with the SU gasket interposed therebetween by bolts. And a shutter device comprising:

[0007]

[Action] The shutter plate is inserted into the shutter plate slide groove in the round packing in advance, and in this state, the shutter plate is aligned with the shutter plate slide flat groove formed on the upper surface of the lower body, and the round packing is fitted with the round packing. Fit into the groove and set the parallel pin through the pin holes at both ends. Next, the SU gasket is placed on the lower main body in alignment with the lower gasket, and the holding portion of the SU gasket is engaged with the round packing. Next, the upper body is aligned and placed on the SU gasket, the round packing is aligned with the round packing fitting groove formed on the lower surface, the parallel pin is engaged with the pin engaging hole, and the bolt is used. Then, it is integrally connected to the lower body at the four corners, and the assembly is completed.

[0008] The shutter plate has a shutter plate handle,
The hole is opened by pulling and closed by pushing. The drill is mounted on the upper body.

[0009]

FIG. 1 is an exploded perspective view of a shutter device according to the present invention. Reference numeral 1 denotes a U-shaped shutter plate slide flat groove 2 formed on the upper surface, a circular hole 3 formed in the center thereof, and a pin engagement hole formed at both ends on the opening side of the slide flat groove 2. 5 is a lower main body formed with a round packing fitting groove 4 provided with a seal ring 6 on an upper surface around the hole 3.

Reference numeral 7 denotes a shutter plate slide groove 8 in the horizontal direction.
And pin holes for inserting parallel pins 10 at both ends of the slide groove.
11 is a round packing fitted into the round packing fitting groove 4 of the lower body 1 from above.

Reference numeral 12 denotes a shutter plate which is slidably inserted into the slide groove 8 of the round packing 7, forms stoppers 13 on both sides on the front end side, and has a shutter handle 14 attached on the rear end side.

A hole 15 is formed at the center of the hole 16 so as to face the hole 3 on the side of the lower body 1, and the round packing 7 is formed on both sides at the rear end.
This is a flat SU gasket which forms a holding portion 17 for holding it by being rolled up from the outside, and is in close contact with the upper surface of the lower body 1.

Reference numeral 18 denotes a drilling machine mounting hole 19 formed in the center, a round packing fitting hole 20 having a parallel pin engaging hole 21 formed on the lower surface and a rear end side, and the SU gasket 15 is formed.
Is an upper body that is fixed to the lower body 1 with bolts 22 sandwiching.

The shutter plate 12 is inserted into the shutter plate slide groove 8 in the round packing 7 in advance. In this state, the shutter plate 12 is fitted into the shutter plate slide flat groove 2 formed on the upper surface of the lower body 1 and the round plate is inserted. The packing 7 is fitted into the round packing fitting groove 4, and the parallel pins 10 are set through the pin holes 5 at both ends. Next, the SU gasket 15 is placed on the lower body 1 so as to be aligned therewith.
And the holding part 7 of the SU gasket 13 is round packing 7
To be engaged. Next, the upper body 18 is placed on the SU gasket 15 with the round packing 7 aligned with the round packing fitting groove 20 and the parallel pin 10 is engaged with the pin engaging hole 21. The assembly is completed by integrally connecting the lower body 1 at the four corners with the use of 20.

The shutter plate 12 has a shutter plate handle 14 and pulls to open a gap between the upper and lower main bodies 1 and 18.
Closes by pushing.

[0016]

The shutter device according to the present invention has the above-described configuration and has the following effects. a. Since the main part of the shutter device is composed only of the lower body, the round packing, the shutter plate, the SU gasket, and the upper body, the number of parts is only five, and the production and assembly are very simple. b. In the state where the shutter plate is closed, a seal ring is provided between the lower body and the main body, and the airtightness is maintained between the upper body and the SU gasket. Airtightness can be maintained. c. Since the seal part has a three-point configuration of a seal ring, a round packing, and a SU gasket, the airtight surface is reduced as compared with the conventional example, and the airtight performance is improved and the durability is improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a shutter device according to the present invention.

FIG. 2 is a sectional view of a state where the shutter device according to the present invention is assembled.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower main body 6 Seal ring 7 Round packing 10 Parallel pin 12 Shutter plate 15 SU gasket 18 Upper main body

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F16L 55/00 F16L 55/10

Claims (1)

(57) [Claims] 1. A U-shaped shutter plate slide flat groove is formed on the upper surface, a circular hole is formed in the center thereof, and a pin engagement hole is provided at both ends on the opening side of the slide flat groove. A lower body having a round packing fitting groove formed therein and a seal ring attached to an upper surface around the hole, a shutter plate slide groove formed in a horizontal direction, and a loop lip formed above and below the slide groove. And a round packing provided at both ends with pin holes for inserting parallel pins and configured to be fitted into the round packing fitting groove of the lower body from above, and in a slide groove of the round packing. A shutter plate that is slidably fitted, forms stoppers on both sides on the front end side, and has a shutter handle attached to the rear end side, and the lower body side in the center A flat plate-shaped SU gasket is formed on both sides of the rear end to hold the round packing so as to be wound around from the outside, and a flat SU gasket that is in close contact with the upper surface of the lower body. A structure in which a mounting hole is formed, a round packing fitting groove with a parallel pin engaging hole on the lower surface and a rear end side is formed, and the SU gasket is interposed therebetween and is fixed to the lower body with bolts. A shutter device comprising: an upper main body;