SU1456676A1 - Sealing arrangement - Google Patents

Abstract

The invention relates to a sealing technique, in particular, to devices for sealing articles on the inner surface of a rolling toroid-shaped shell. The purpose of the invention is to increase reliability and expand technological capabilities by eliminating wrinkling and casing of the shell and reducing its wear rate. The device contains a court pus with a lodgement along a lateral surface mounted in the axial cavity of a flexible toroidal shell filled with a fluid medium. The casing with the shell is installed in the loading window of the chamber, and the chamber and the housing can be connected by a rod. On the surface of the body, along the length of the cradle, uniformly circumferentially made longitudinal protrusions are rounded, while the perimeter of the body section with the projections is equal to the outer perimeter of the shell section. When loading / entering the chamber of the workpiece, for example a pipe, the toroid-like shell turns out in the cavity of the product, rolling over its inner surface and slipping along the surface of the cradle, while due to the specified equality of the perimeters, a tight fit of the shell surface without folds and cm occurs. ti. 1 hp f-ly, 2 ill. with S (L

Description

one

The invention relates to a sealing technique, in particular, to devices for sealing articles on the inner surface of a rolling toroid-shaped shell.

The purpose of the invention is to increase the reliability of work and the expansion of technological capabilities.

Figure 1 shows a sealing device; figure 2 - section aa in figure 1.

The sealing device comprises a housing 1 with a lodgement along a lateral surface mounted in the axial cavity of a flexible toroid-shaped

shell 2 filled with fluid 3, such as compressed air.

The housing 1 with the shell 2 is installed in the loading window 4 of the chamber 5, equipped with an elastic seal 6. The tibka toroidal shell 2 is installed on the housing backing of the housing 1 with the possibility of its axial slipping in the axial direction of its inner branch along the surface of the cradle when inserting or removing the tubular product 7 from the chamber cavity 8 5. For this the surface of the lodgement .. Covered with a layer of antifriction material, for example Teflon film.

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In order to exclude craving by product 7 into the cavity of chamber 5 of body t with a toroidal shell 2, the device is equipped with a rod 9, one end of which is attached to body 1 and the other end to the opposite wall of chamber 5. On the surface of body 1 along the length of the lodgment evenly around the circumference the longitudinal projections 10 are rounded, and the perimeter of the cross section of the shell 2 is equal to the perimeter of the cross section of the housing 1 with the projections 10,

The device works as follows.

A workpiece, for example a pipe 7, when loaded into chambers 5, for example, electroplating through a loading window 4, draws its front end onto a flexible toro with a second shell 2. At the same time, said window is compacted on the outer surface of the product with elastic material 6, and the inner surface is a toroidal sheath 2. As the product 7 is moved, the flexible toroidal sheath is continuously turned inside the cavity and the LIA rolls along its inner surface. When this occurs, continuous slippage of the surface of the shell. On the antifriction surface of the cradle.

The housing 1 in the sealing zone is held by a tangy .9 fixed by a condom in the cavity of chamber 5. Since the outer perimeter of the housing 1 along the length of the lodgement with the projections 10 is equal to the outer perimeter of the toroidal shell 2, then upon transition of the outer surface of the shell into

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a tight fit of the casing surface to the inside occurs without wrinkling and creasing of the casing, which reduces the wear rate of the casing. In the pauses between loading operations, a reliable sealing of the loading window is ensured by the pressure of compressed gas in the closed cavity 3 of shell 2.

The technical and economic efficiency of the device consists in achieving reliable and durable compaction work on tubular products. their inner surface.

Claims (2)

1. A sealing device containing a housing with a lodgment installed coaxially with the loading window of the chamber to be sealed and a flexible toroidal shell filled with a fluid and installed in the lodgment with the possibility of slippage in the axial direction, characterized by the fact that the purpose of increasing reliability and expanding technological capabilities, housing. with lzhement located in the axial channel of the toroidal shell, on the surface of the lodgment evenly circumferentially made longitudinal protrusions, The perimeter of the housing cross section with protrusions is made equal to the outer perimeter of the shell cross section, 2. The device according to claim 1, about tl, which is provided with a shtanga placed in the cavity of the chamber and installed coaxially with the loading window, one end of the shtanga attached to the body and the other to the inner wall of the chamber. Fig, 1 Compiled by G, P1urenko Editor A. Kozoriz Tehred L. Oliynyk Proofreader V. But ha Order 7465/33 Tirah 721 Subscription VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Ayu ten Schig.1