JPS58142073A - Seal device - Google Patents

Abstract

PURPOSE:To provide a seal device which can accomplish a reliable seal by locally clamping any part of a rubber packing so that the wall surface and the rubber packing are brought into contact with each other with uniform surface pressure at any part thereof. CONSTITUTION:A nut 9c of each clamping bolt 9 is substantially equally tightened to clamp a circular packing 2 with a main flange 6 and a subsidiary flange 7, and the circular rubber packing 2 is elastically deformed outward and inward in such a manner that the outer peripheral surface 2c and the inner peripheral surface 2b are sticked fast to the inner peripheral wall surface 5 of an outer pipe 8a and the outer peripheral wall surface 4 of an inner pipe 3b. A cylindrical bolt 11a of an adjusting mechanism 11 for a portion where leadage is caused is turned to expand a gap between a segmental intermediate plate 10 and the main flange 6, so as to increase the clamping force for the circular rubber packing 2 at that portion, whereby poor contact to both inner and outer peripheral wall surfaces 2b, 2c or leakage due to lack of pressure can be prevented completely.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a double piping system, or a companion system for sealing a gap formed between a member having a good outer circumferential wall surface, an inner F8 wall surface, and t, which correspond to each other, such as a partition wall and an inner F8 wall surface. This is a V-le device KM.

For the conventional ζa#i1o $/-A/eluent, a dark Kml-shaped rubber packing between the outer ** surface and the inner circumferential wall surface is fitted, and the tiii surface of the rubber packing is compressed with a multi-flange to seal the rubber packing. There is a model 40 that has 8 directions inside and outside in close contact with one surface of one pigeon ai and one surface of the outer peripheral wall for S/-A/.

However, if the outer wall surface and both wall surfaces are eccentric, or if the wall surface is distorted and the contact surface pressure between the outer wall box and the rubber seal is uniform at each location. Although this can be solved to some extent by tightening one piece of fluff on both sides, the 1mF capacity limit of the two fluffy VO pieces cannot be kept much larger than about 0IIl due to the structure, resulting in a large one-sided middle meeting. At present, it is not possible to prevent leakage if the

Therefore, the present invention is configured so that any part of the rubber seal can be locally compressed and thinned, so that the wall surface and the rubber seal are brought into contact with uniform surface pressure at each location, and reliable sealing properties can be obtained. It is intended to provide V-μ support.

Hereinafter, one embodiment of the present discussion will be described in detail based on the drawings.

1. In the V--device l shown in FIG. Piece 2 & seam 2 bt
It is formed in a dove-shaped shape and is loosely set.

This annular rubber gasket 2 is fitted into a gap S between the outer periphery 11 surface 4 of the inner tube 8b and the inner periphery wall surface 5 of the outer tube 8a of a double piping structure consisting of an outer tube 8a and an inner tube 8b.

6.7 is the main - one pair O hula, n □ Ji deshi, Kinpeng Yosusei 9
A through hole 8 is formed in the round theater.

The granite flanges 6.7 fit into the gap SK and are provided at corresponding positions sandwiching the annular rubber gasket 2.

9 is tightened with bolts, the main flange is inserted into the can through hole 8 of 7, fixed to the secondary flange, and screwed into threaded part 9b) 9G is used to tighten the main flange. 6 and the secondary flange 7 are pressed against both sides of the annular rubber gasket 2, so that the inner and outer surfaces of the mound-shaped rubber gasket 2 are the same.
b, 2c are for deforming the inner circumferential wall surface 6 and the outer circumferential wall surface 4 to press against each other.

lO Hirokinpeng〉It is a segment-shaped intermediate plate consisting of a main 7 piece l'8 and an annular rubber gasket 2, and two divided pieces 2.
They are interposed to correspond to aK, and a plurality of them are transparently provided in the circumferential direction.

11 is an adjustment mechanism), and a threaded portion llb of a cylindrical pole) llaL rotatably fitted to the outer cylinder of the tightening bolt/k) 9 is formed on the inner circumferential surface of the segment-shaped intermediate plate 1012) through-hole 10a. Screw it into the V hole 10b and insert the cylindrical hole 11aO hexagonal head fIKl 1 c2 + TS) 9c to raw-y fun v6
It is formed so that the distance between the main flap 6 and the seventh segment-shaped middle H&to can be increased or decreased by moving the cylindrical pole.

When sealing the gap s2 between the outer tube 8a and the inner tube 8b using the 9V-μ device 1 as described above, first each tightening bolt 9
(Natsu) 90 are tightened approximately evenly, and the annular rubber packing 2 is compressed by the main flange 6 and the sub-flange s/T, and the annular rubber packing 2 is made elastic and shaped in the inner and outer directions, and the outer 1i1u2c, the inner 2b, and the entire outer tube are tightened. 8a and the inner circumferential wall surface 5 and outward wall surface 4 of the inner tube 8b.

In this case, if the inner peripheral wall surface 5 and the outer wall surface 4 are eccentric or distorted, the dimensions of the IILS are uneven, so there is a part of the annular rubber gasket 2 and both the inner and outer breasts. There may be areas where the adhesion to the walls 4 and 5 is poor or the pressure is insufficient.
Failure to ensure thorough study may result in omissions.

In that case, the gap between the annular rubber gasket 2 at that one location can be adjusted by rotating the adjustment mechanism llO granite hole or y)liar at the location where the leak is occurring to enlarge the distance between the segment-shaped intermediate plate IO and the main flange 6. If the pressure is increased, it is possible to completely prevent trout from leaking due to insufficient pressure force in the case of trout that have poor adhesion to both the inner and outer surfaces 2b and lc of the annular rubber gasket 2.

In the above embodiment, the annular rubber gasket is formed of t-m divided pieces, but even if an integrally molded one is used, the same effects can be obtained.

In addition, the shape of the abutment part of the segment-shaped intermediate plate should be formed straight, and if a double pipe is used, a segment-shaped intermediate plate with a curvature corresponding to the diameter of the double pipe is required.
As shown in the figure, the segmented intermediate plate lOO abutment 5toc
, when formed in an arc shape that matches each other VC43,
i No large gap is created between the Sedanon F-shaped intermediate plates 100 even if they are arranged in any curvature, and the length Lt of the intermediate plates 10
- By making it shorter, if it is a double pipe with a large diameter, the intermediate plate 10 in the form of a single segment can be used in common.

Furthermore, the adjustment mechanism is not inferior to that of the nine examples above,
Each segment-shaped intermediate plate 1 of the main flange 6 as shown in FIG.
A screw hole 6ak is provided at a location corresponding to 0, a bolt 12 is screwed into the screw hole 6tL, and the spacing between the main flange 6 and the segment-shaped intermediate plate IO can be increased or decreased by using the suppressing action of the hole 6tL. It may be formed as follows.

In addition, in the iiJ memory loss example, M
'+1, but this is not limited to the gap between the piping of an oil storage tank and the concrete melting wall, or the gap between the end of the buried pipe and the outer peripheral wall material, etc. Inside I'
Any gap formed by walls can be used.

As shown in the above examples, according to the V-ru device of the present invention, the distance between the main flange and each segment-shaped intermediate plate can be individually increased or decreased. Since the i-section mechanism is provided, regardless of the permissible limit for one wheel of both the main and sub-wheels, the clamping force at the location corresponding to each segment-shaped intermediate plate of the annular rubber seal can be individually adjusted by a small amount, and therefore, the clamping force can be adjusted by small amounts, thereby reducing the It is possible to completely eliminate leakage by eliminating poor adhesion and insufficient crimping that occur in a part of the annular rubber packing due to eccentric strain, and a ridiculous V-ru effect can be expected.

In addition, since the annular rubber packing is formed from 9 pieces that are joined in both directions, the diameter can be changed arbitrarily by changing the number of pieces M'k, and the joints of each piece are Since it is formed into a round shape, the adhesion at the joints of each divided piece is good regardless of the curvature state.

Furthermore, since the apricot openings of the segmented intermediate plates are formed into arcuate shapes that match each other, by shortening the length of the segmented intermediate plates, the diameters of the inner and outer surfaces are relatively thick. In one case, if the packing width is the same, the same segment-shaped intermediate plate can be used regardless of the diameter of the inner and outer Il boxes, resulting in cost reduction.

[Brief explanation of the drawing]

Figures 1-sIl! 3 shows one embodiment of the present invention, at
Zusha vertical sectional view. FIG. 2 is a plane view of II1-FIG. 0A-Al1. The am diagram is number 1! FIG. 0B-B sectional view. FIG. 4 and FIG. 6 are sectional views showing different examples. 2...Annular rubber backing 6...Main flange 7...Secondary flange V9...
・Tightening bolt 10...Segment-shaped intermediate plate 11...Pongegobushi mechanism 4...Outer peripheral wall surface b...
Inner wall surface 40

Claims (1)

[Scope of Claims] 1. Fit an annular rubber gasket and a pair of main side flange with the rubber gasket facing down between the corresponding outer peripheral wall surface and inner peripheral wall surface, is formed so as to be pressed into contact with the annular rubber packing with a tightening bolt, and between the main 7 flange and the annular rubber packing, a segment-shaped intermediate plate of W number is built in the circumferential direction, and the main flange and each segment-shaped intermediate plate A sealing device characterized by being provided with an adjustment mechanism for increasing or decreasing the distance between the two. The oV-ru device described in item 1 of the following patent, in which a two-ring rubber gasket is formed of divided pieces having a base film and ridges in the circumferential direction, and the joints of each divided piece are formed in a dovetail N shape. 8. The abutment s of the segment-shaped intermediate plate is formed into a mutually matching arc shape as described in claim 1 0 $' -j
”gMlljt.