Flange-sealed asbestos gasket and puller for mounting flange-sealed asbestos gasket

Abstract

The utility model discloses an asbestos gasket for flange sealing and a puller for mounting the asbestos gasket. The asbestos gasket comprises an asbestos gasket body 1, a drag hook 2, a spring 3 and a magnetic lifting ring 4. The asbestos gasket 1 is arranged to be an annular sealing body 101 and two extension strips 102 extending from the two symmetrical sides of the sealing body 101, a plurality of tearing holes 103 are machined in the junctions of the sealing body and the extension strips, and pulling holes 104 are machined in the outer sides of the extension strips. The draw hook 2, the spring 3 and the magnetic lifting ring 4 form a puller for mounting the asbestos gasket 1, and one asbestos gasket 1 is matched with two pullers for use. When the asbestos gasket is installed, the asbestos gasket is fixed by means of the puller, a specially-assigned person does not need to hold the asbestos gasket by hand, and construction personnel are reduced.

Description

Technical Field

[0001] The utility model relates to a gasket for flange sealing and a tool for installing the same. Background Art

[0002] When connecting pipeline flanges, gaskets are needed for sealing. Asbestos gaskets are widely used because of their low material cost, easy processing and high temperature resistance.

[0003] When installing a conventional asbestos gasket on a flange, someone needs to hold the gasket by hand to align it with the installation position. Otherwise, the gasket is likely to be misaligned or fall off during the alignment and installation process of the two flanges. Especially for a flat flange without convex and concave surfaces for gasket positioning, the installation is very inconvenient. Summary of the Invention

[0004] Aiming at the technical problems mentioned in the above background, the utility model provides an asbestos gasket for flange sealing and a pulling tool for installing the same. During installation, there is no need for a special person to hold the gasket by hand. Only by using this pulling tool can the asbestos gasket be fixed at the flange sealing end face.

[0005] Technical Solution: An asbestos gasket for flange sealing, which is characterized in that: the asbestos gasket is arranged as an annular sealing body and two extension strips extending from its symmetric two sides. The sealing body is installed at the flange sealing end face to play a sealing role, and the extension strips extend to the outside of the flange to play a fixing role; and, a plurality of tearing holes are processed at the junction of the sealing body and the extension strips, and a pulling hole is processed on the outside of the extension strips.

[0006] On the other hand, the utility model also provides a pulling tool for installing the asbestos gasket. The pulling tool includes a hook, a spring and a magnetic lifting ring; the hook is made of steel wire bent, the front part is a front hook, and the rear part is a tail ring. The front hook hooks on the pulling hole on the extension strip of the asbestos gasket, and the tail ring is connected to the spring; the magnetic lifting ring is composed of a pulling ring, a sheath and a magnet, and is adsorbed on the steel pipe outside the flange. The asbestos gasket is fixed at the flange end face by pulling the spring.

[0007] Further, a U-shaped middle ring is welded on the outside of the front hook of the hook to form a closed loop with the front hook. The size of the closed loop hole is larger than the finger diameter, which is convenient for the finger to be inserted into the middle ring, and the extension strip of the asbestos gasket is torn and disconnected by pulling the hook.

[0008] Compared with the existing background art, at least one of the above technical solutions adopted by one or more embodiments of this specification can achieve the following beneficial effects:

[0009] First, when installing the asbestos gasket, it is fixed with the aid of the pulling tool, eliminating the need for a dedicated person to hold it by hand, reducing the number of construction workers. Second, the extension strip of the asbestos gasket can be torn off after some bolts are pre-tightened during installation, without hindering the tightening of the remaining bolts. Finally, the pulling tool has a simple structure, low manufacturing cost, and is convenient to carry.

[0010] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory, and do not limit the present utility model.

[0011] Other features and aspects of the present utility model will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings herein are incorporated into and constitute a part of this specification. These drawings show embodiments consistent with the present utility model and, together with the specification, are used to explain the technical solutions of the present utility model.

[0013] Figure 1 Views of the asbestos gasket and the pulling tool for its installation;

[0014] Figure 2 View of the asbestos gasket;

[0015] Figure 3 View of the pulling tool for installation;

[0016] Figure 4 View of the hook of the pulling tool for installation;

[0017] Figure 5 View of the magnetic lifting ring of the pulling tool for installation;

[0018] Figure 6 View of the asbestos gasket fixed to a flange by its installation pulling tool;

[0019] Figure 7 View of two flanges aligning and clamping the asbestos gasket;

[0020] Figure 8 View of the extension strip of the asbestos gasket being torn off after some bolts and nuts of the two flanges are pre-tightened;

[0021] Figure 9 View of all bolts and nuts of the two flanges being tightened;

[0022] In the figure: 1 - asbestos gasket, 101 - sealing body, 102 - extension strip, 103 - tearing hole, 104 - pulling hole; 2 - hook, 201 - front hook, 202 - middle ring, 203 - tail ring; 3 - spring; 4 - magnetic lifting ring, 401 - pulling ring, 402 - sheath, 403 - magnet; 5 - flange; 6 - steel pipe; 7 - bolt and nut. Detailed implementation manners

[0023] Various exemplary embodiments, features and usage methods of the present utility model will be described in detail below with reference to the accompanying drawings. The same reference numerals in the drawings denote elements having the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings do not have to be drawn to scale unless otherwise specified.

[0024] In addition, in order to better illustrate the present utility model, numerous specific details are given in the following detailed implementation manners. Those skilled in the art should understand that the present utility model can be implemented without some specific details. In some instances, methods, means and elements well known to those skilled in the art are not described in detail so as to highlight the gist of the present utility model.

[0025] As Figure 1 shown, an asbestos gasket for flange sealing and a pulling tool for its installation include an asbestos gasket 1, a hook 2, a spring 3, and a magnetic lifting ring 4; among them, the hook 2, the spring 3, and the magnetic lifting ring 4 form a pulling tool for installing the asbestos gasket 1.

[0026] As Figure 2 shown, the asbestos gasket is provided with a circular sealing body 101 and two extension strips 102 extending from its symmetric two sides. The sealing body is installed at the sealing end face of the flange 5 to play a sealing role, and the extension strips extend to the outside of the flange 5 to play a fixing role; and, several tearing holes 103 are processed at the junction of the sealing body and the extension strips, and a pulling hole 104 is processed on the outside of the extension strips.

[0027] As Figures 3 to 5 shown, the hook is made of wire bending. The front part is a front hook 201, and the rear part is a tail ring 203. The front hook hooks on the pulling hole 104 on the extension strip 102 of the asbestos gasket 1, and the tail ring connects the spring; a U-shaped middle ring 202 is welded outside the front hook 201 of the hook 2 to form a closed loop with the front hook. The size of the closed loop hole is larger than the finger diameter, which is convenient for the finger to be inserted into the middle ring, and the extension strip 102 of the asbestos gasket 1 is torn and disconnected by pulling the hook; the magnetic lifting ring is composed of a pulling ring 401, a sheath 402, and a magnet 403, adsorbs on the steel pipe 6 outside the flange 5, and fixes the asbestos gasket at the end face of the flange 5 by pulling the spring.

[0028] As Figures 6 to 9As shown, one asbestos gasket 1 of the present utility model is used in conjunction with two of the said pulling tools. The specific usage method is as follows:

[0029] First, magnetically suspend the magnetic suspension rings 4 of the two pulling tools symmetrically above and below or left and right on the steel pipe 6 outside a flange 5. Stick the asbestos gasket 1 by hand at the sealing end face of the flange 5. Hook the two hooks 2 on the pulling holes 104 on the extension strip 102 of the asbestos gasket 1. Let go of the hand and adjust the position of the asbestos gasket 1 to align with the sealing end face of the flange 5. The asbestos gasket 1 is pulled and adhered to the sealing end face of the flange 5 and fixed in place, as Figure 6 shown.

[0030] Then, align another flange with the gasketed flange 5, and the two flanges 5 clamp the asbestos gasket 1, as Figure 7 shown; Connect some bolts and nuts on the two flanges and pre-tighten them to clamp the asbestos gasket 1. By pulling the hook 2, tear off the extension strip 102 of the asbestos gasket 1 and remove the said pulling tool, as Figure 8 shown.

[0031] Finally, connect all the bolts and nuts on the two flanges and tighten them to achieve the purpose of gasket sealing, as Figure 9 shown.

Claims

1. An asbestos gasket for flange sealing, characterized in that: The asbestos gasket comprises an asbestos gasket (1), the asbestos gasket is arranged in the form of a circular sealing body (101) and two extension strips (102) extending symmetrically from its two sides, the sealing body is installed at the sealing end face of the flange (5) to play a sealing role, and the extension strip extends to the outside of the flange (5) to play a fixing role; and a plurality of tear holes (103) are processed at the junction of the sealing body and the extension strip, and a pulling hole (104) is processed on the outside of the extension strip.

2. A puller for installing an asbestos gasket, applied to the asbestos gasket for flange sealing according to claim 1, characterized in that: It comprises a draw hook (2), a spring (3), and a magnetic hanging ring (4); the draw hook is made of bent steel wire, the front part is a front hook (201), and the rear part is a tail ring (203); the front hook is hooked on a pulling hole (104) on an extension strip (102) of an asbestos gasket (1), and the tail ring is connected to the spring; the magnetic hanging ring is composed of a draw ring (401), a sheath (402), and a magnet (403), and is adsorbed on a steel pipe (6) outside a flange (5), and the asbestos gasket is fixed to the end face of the flange (5) by pulling the spring.

3. The puller for installing an asbestos gasket according to claim 2, characterized in that: A U-shaped middle ring (202) is welded on the outside of the front hook (201) of the pull hook (2) to form a closed loop with the front hook. The size of the closed loop hole is larger than the diameter of a finger, so that the finger can be inserted into the middle ring easily. The outer strip (102) of the asbestos gasket (1) can be torn and disconnected by pulling the pull hook.

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