JPS6239487A - Tank lining system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a novel method for connecting a plastic tank lining to a tank, typically having a pre-formed shape surrounding flanges, fittings and other inserts through the tank wall. Regarding the system.

It is well known that metal type tanks, vessels, and the like suffer from corrosion and other problems with long-term use. Tanks such as those used for water conditioning (11
have a liner that includes a painted interior, (2) rubber lined in the field for a full rubber lining, or (3) a lining formed from a sheet of vinyl material. Typically, water conditioning tanks have numerous flanged openings and hand holds, whether with a painted or rubberized interior.

Vinyl linings were only used on containers that had an outlet. Typically, vinyl linings are formed from sheet material, cut, and shaped to match the interior of the container. Next, the seam is covered by U.S. Patent No. 3,159,3.
06, or by any known technique such as solvent or impulse sealing. The vinyl is bonded by a near vacuum created between the liner and the container wall. In some cases adhesives are used to aid or provide adhesion.

Irregularities in openings, such as manholes, do not fit well with the sheet material liner without excessive wrinkles. During use, tank liner wrinkles are subject to damage and tearing when pressure is applied. Therefore, the beneficial existence of vinyl liners could not be realized where tanks have the numerous inserts that are normally present.

Main ball 1B block! It is therefore an object of the invention to allow the use of protective linings in tanks and containers with one or more openings or inserts.

Another object of the invention is to install a highly conformable shape over the flanges or other structural parts of openings passing through their sidewalls.

Yet another object of the invention is to provide a fit that can be highly matched between the matching members and the geometry of the opening through the tank or container wall.

Yet another object of the present invention is to provide an improved attachment of a mating shape to a flange or other portion of an insert passing through a container.

These and other objects are achieved by the present invention, which provides a positive tank lining having one or more fittings shaped to fit flanged openings, manholes, and the like. The pre-formed shape fits snugly over the bayonet structure that passes through the vessel wall and forms a smooth continuity with the vinyl lining without wrinkles or such non-smooth contact with the tank. Can be made from vinyl and similar materials such as plastisol and others.

BRIEF DESCRIPTION OF THE DRAWINGS Other objects of the invention and additional features contributing thereto and benefits derived therefrom will become apparent from the following description of preferred embodiments of the invention, which are illustrated in the accompanying drawings.

FIG. 1 is a perspective view of a container with a vinyl-lined interior and a matching collar of the present invention.

FIG. 2 is a cross-sectional view of the collar of the present invention taken along plane 2--2 of FIG.

FIG. 3 is a perspective view, partially cut away and partially in section, of the collar of the present invention.

FIG. 4 is a partial cross-sectional view of another embodiment of the invention having a mechanical connection of the collar to the flange of the container.

5 is a partial cross-sectional view of the collar of FIG. 2 with sealing means; FIG.

FIG. 6 is a perspective view of a container similar to FIG. 1 with a collar that can match the top.

FIG. 7 is an enlarged cross-sectional view taken along plane 7-7 of FIG.

FIG. 8 is a similar cross-sectional view of another embodiment of the invention.

1. Referring to FIG. 1, a typical inset shown generally by the reference numeral 2 and having one or more insets forming a manhole opening and the like passing through the tank outer wall 6 is shown in FIG. A pressure vessel or tank is shown. Insert 4 is
The novel sleeve member or cylinder may constitute any regular or irregular shape with cylindrical or other cross-section. The interior walls of tank 2 are lined with a vinyl plastic liner for protection against corrosion and other problems during storage of various liquids. As is well known, liner seams can be sealed using high frequency heat sealing techniques, solvent or other adhesive techniques, or impulse sealing. The liner adheres to the container wall by the near vacuum pressure that exists between the sheet material and the container interior surface. An adhesive can also be used to form a bond if desired. Although the lining 8 is described as a vinyl material, it is within the scope of the present invention to use other suitable liners in conjunction with the present invention.

1 and 2, the opening of the insert 4 through the side wall of the tank 2 can be fitted with a conventional cover 10, which is retained within the tank by bolt assemblies 12. Bolt assembly 12 has a threaded end that cooperates with spider 14. The inner end of the bolt assembly has a capture bracket member 1 for retaining the cover 10.
8 includes an enlarged end 16 held by 8.

As can be seen in FIG. 2, the cylinder 4 forming the insert is
It is generally surrounded by a homemade highly conformable collar which forms an effective extension of the liner 8 on the insert. As seen in FIG. 3, the collar 20 can be made of any vinyl or similar elastomeric material, such as plastisol, into a circular, oval or other similar cross-sectional shape closely approximating the shape of the container fitting. It is formed as a highly conformable member. The collar 20 can be formed by any known method such as dip molding, slip molding, injection molding, transfer molding, etc. In some molding methods, the collar 20 is molded with a continuous cross section, with sections 2
1 is cropped at the periphery from the collar.

The design of the collar 20 is constructed as a close-fitting overlay that conforms to any irregular shape of the structure forming the opening through the tank. Furthermore, as shown in FIG.
It has a hollow interior delimited by a U-shaped portion 22 formed by 2c. In its hemmed state, it will be appreciated that the outer edge of the collar 20 projects outwardly from the wall 22c to form a flange 24 which is connected to the vinyl lining 8. The outer end of the collar projects from the wall 22a in the fringed configuration and forms an outer flange 26.

In FIG. 2, the collar 20 is mounted in surrounding relation to the cylindrical insert 4. In FIG. The U-shaped portion of the collar has a wall 22a covering the annular inner wall of the insert 4 and a wall 22b covering the annular inner wall of the insert 4.
and 22c are arranged to cover the interior of the insert and over its outer surface within container 2, respectively. Flange 24
is bonded to the liner 8 using high frequency heat sealing techniques or solvents and becomes an integral part of the liner. The outer flange 26 is held flush against the outer surface of the bayonet cylinder 4. An end surface 28 of spider 14 is pressed against a portion of flange 26 to retain cover 10.

As shown in FIG. 4, the collar may cover only part of the plug-in structure 4. In addition, in Figure 4, color 2
Continuous or divided male protrusion 2 on wall 22b of 0
9 may be provided and inserted, for example, into a corresponding groove 29" formed in the insert on the inner end wall of the flange structure. Mechanical adhesion of such a collar 20 is achieved during passage of the vinyl liner into the wall. Particularly advantageous for fastening.

In FIG. 5, a plastic gasket 30, such as an elastomeric material, is optionally located between the wall 22b and the cover member 10, so that the pressure within the container 2 and the force applied to the cover 10 can cause the vinyl Prevents unwanted cold flora. The presence of gasket 30 has been found to be effective in preventing such cold flow problems and increases the thickness of the material between the cover and flange.

Referring to FIG. 6, the tank 2 has a top opening 34 in the tank wall 6, as shown more clearly in FIGS. 7 and 8. In FIG. 7, a metal ring 36 is secured to the top wall 6 of the metal tank 2 by suitable securing means 38, such as solder. The metal ring 36 is
It can be seen that the wall 6 extends outwardly from the tank 2 in the opening-forming part. In the embodiment of FIG. 7, the collar 22 includes a flange 24, a first wall 40 continuous therewith and extending substantially perpendicular thereto, and a first wall 40 extending substantially at right angles thereto.
a second wall 42 continuous with and extending substantially perpendicular thereto. Flange 24 is connected to vinyl liner 8 in the embodiment of FIG. 7 in the same manner as flange 24 is connected to vinyl liner 8 in the embodiment of FIGS. 1-4. A first wall 40 extends outwardly from the tank in the axial direction of the opening 34 and a first collar wall extends outwardly from the tank in the axial direction of the opening 34.
substantially parallel to the axis of 4. Second color wall 42
are substantially parallel to collar flange 24 and flange 24 . It can be seen that the first wall 40 and the second wall 42 have a generally U-shaped cross-sectional shape. Second
The wall 42 is positively connected to the metal ring 36 by a bolt 44 that extends through a spacer 46, through a circular opening in the second wall 42, and into a threaded hole 50 in the metal ring 36. Ru. In the illustrated embodiment, there are six bolts 44, all connected in the manner just described.

In the manner described above, the flange 24 is connected to the vinyl liner 8 and the first wall 40 and the second wall 42 are connected to the metal ring 3.
6, thereby providing a snug fit between the vinyl liner 8 and the metal ring 36.

A similar but modified assembly is shown in FIG. Referring to FIG. 8, the metal member 36' therein is
It consists of an outward extension of the tank wall 6 extending at right angles to the tank wall 6 and parallel to the axis of the opening 34 . A metal ring 52 is secured to the metal member 36', and the ring 52
A number of threaded holes 54 are provided to accommodate bolts 44. In the embodiment of FIG. 8, collar 22 is similar to collar 22 of FIG. 7, and flange 24. first wall 4
0 and a second wall 42. The second wall 42 has a number of openings for receiving ports 44, the bolts extending through spacers 46 as in the embodiment of FIG. 7, and flanges 24 secured to the vinyl liner in the same manner as described above. be done. The collar 22 in the specific example of FIG. 8 is a metal member 3.
6° and closely matched with ring 52, lining 8
and the metal member with the ring extension 52.

Although the invention has been described with reference to preferred embodiments, those skilled in the art will appreciate that various modifications can be made and elements thereof can be replaced by equivalents without departing from the scope of the invention. be.

In addition, the teachings of the present invention may be adapted to a particular situation and material without departing from the scope of the invention.
Many modifications can be added.

Therefore, the invention is not limited to the particular embodiment disclosed as the best mode of the invention, but the invention is intended to include all embodiments that fall within the scope of the appended claims.

[Brief explanation of drawings]

1 is a perspective view of an internally lined tank having a collar of the present invention; FIG. 2 is an enlarged cross-sectional view taken along the first line 2-2; FIG. 3 is a perspective view of a collar of the present invention; 4 is a partial sectional view of the mechanical connection of the collar according to another embodiment, FIG. 5 is a partial sectional view of the collar of FIG. 2 using a gasket, and FIG. 6 is a partial sectional view of the collar of FIG. A perspective view of a similar tank; FIG. 7 is a cross-sectional view taken along line 7--7 of FIG. 6;
FIG. 8 is a similar cross-sectional view of another embodiment. 2 is the tank, 6 is the tank wall, 8 is the seat lining, 2
0 is the collar, 22 is the U-shaped part, 24 is the flange, 26
is the outer flange. Mouth G, 7

Claims (10)

[Claims] (1) a tank having a wall with an aperture; a sheet lining adhered to an inner surface of the wall and having an aperture aligned with the aperture in the tank wall; and a sheet lining extending outwardly from the aperture in the tank wall; a collar having a metal member; a flange; a first wall extending substantially perpendicular to the flange; and a second wall extending substantially perpendicular to the first wall; means for connecting a flange to the sheet lining adjacent an opening thereof; and means for positively connecting the second collar wall to the metal member, the first wall and the second wall comprising: A tank lining system adapted to be disposed in close fit with said metal member, thereby creating a snug fit between said seat lining and metal member. (2) the metal member extends outwardly from the tank in the axial direction of the tank opening, the first collar wall being substantially parallel to the axis of the tank opening, and the second collar wall being relative to the collar flange; The tank lining system of clause 1, wherein the collar flanges, the first and second collar walls have a generally U-shaped cross-sectional configuration. (3) The tank lining system of paragraph 1, wherein the collar is made of elastomer or plastic. (4) The tie lining system of paragraph 1, wherein said positive connection means comprises a bolt securing the second wall to a metal member. (5) a tank having a wall with an opening; a sheet lining adhered to the inner surface of the wall and having an opening aligned with the opening in the tank wall; and a lining having a similar shape to the opening; a bayonet fitting extending through the opening into the interior of the tank and having an outer surface, an end surface and an inner surface; a flange surrounding the periphery of the opening; and a flange surrounding the outer surface of the bayonet fitting and extending into the tank. a first wall extending inwardly and generally perpendicular to the flange; a first wall extending inwardly and generally perpendicular to the flange;
a collar having a second wall extending generally perpendicular to the wall of the seat lining and thus having a generally Z-shaped cross-sectional shape; and means for connecting the collar flange to the sheet lining adjacent the opening thereof; The first and second walls of the collar are positioned in close conformity with the outer and end surfaces of the bayonet fitting, respectively, thereby providing a snug fit between the seat lining and the bayonet fitting. Tank lining system that is meant to be formed. 6. The tank lining system of claim 5, wherein said collar includes a third wall that closely mates with said interior surface of said bayonet fitting. (7) the end surface of the plug-in fitting and the second portion of the collar;
5. The tank lining system of clause 5, wherein the wall has connection means for providing a positive connection. (8) The tank lining system of clause 7, wherein the connecting means comprises a protrusion and a complementary shaped groove structure. (9) a cover member in the tank for closing an opening in the tank wall, the cover member covering the end surface of the plug-in fitting and the second wall of the collar; tank lining system. (10) The tank lining system of clause 9 including a gasket interposed between the cover member and the second wall.