CN201339712Y - Strip gasket with reinforcing net sleeve - Google Patents

Abstract

A strip gasket with reinforcing net sleeve is arranged between involutory flanges, which is characterized in that the gasket comprises a sealing body and a coating layer arranged on the surface of the body, which are tightly combined into a flexible strip body, wherein the flexible strip body can be made into a flat shape, and is provided with self-adhering glue on one flat plane thereof, the sealing body is made from flexible graphite, and the coating layer is provided with a wired graphite wire tube. The strip gasket has the advantages that the strip gasket can be cut as requirement in accordance with the field construction conditions without processing and shaping, has convenient installation and reliable sealing, greatly improves the strength and the pressure medium resistance ability of the gasket, can prevent inner sealing material from deficiency, has wide use range, can avoid the weakness of bulk stock of shaped gasket, and saves materials.

Description

The banded pad that a kind of net strengthens

Technical field

The utility model relates to the fluid seals technology field, the banded pad that especially a kind of net strengthens

Background technique

Nonmetal or the metal enhanced seal pad of public use at present mainly is a forming gasket.As its name suggests, forming gasket is processed into the sealing surface shape in advance with gasket seal exactly.In order to adapt to the sealing surface of all size and shape, just need to be equipped with a large amount of shaping dies and stock.As big specification or non-regular shape, pad then is difficult for being processed into accurate sealing surface shape, influences sealing effect; As no corresponding specification among the stock, just can not in time safeguard, influence production.A kind of banded pad of expanded polytetrafluoroethylsealing of strip structure is arranged in addition, because PTFE easy-cold flow and creep, there is narrow limitation in using scope, can not satisfy the seal request under high temperature, the high pressure.

Summary of the invention:

The purpose of this utility model is to overcome above-mentioned deficiency, and the banded pad that provides a kind of net to strengthen places between the involutory flange, it is characterized in that this pad comprises sealed body and is arranged on the coating of main body appearance, and both combine closely into a flexible shoestring.Said flexible shoestring can be made into flat, and can be provided with the self-adhesion sticker on a flat horizontal surface; Sealed body can be Expanded graphite, and coating can be wired graphite line woven sleeve, and bed thickness is greater than 1.5mm.

Advantage of the present utility model and beneficial effect: when device context is safeguarded, can intercept the banded pad of respective length arbitrarily,, utilize the preliminary and flange of single-coated foam (as: adhesive sticker) to fix according to the tortuous one-tenth closo of the shape of sealing surface shape according to field working conditions.Wherein, the enhancing woven sleeve of outer wrap (as: strengthening the enhancing net that graphite line is compiled into by nickel wire) closely wraps up the sealing material main body of inside and contacts with flange, not only improve the intensity of pad and the ability of anti-pressure medium greatly, also can prevent the disappearance of inner sealing material.The sealed body material can have good plasticity and sealing with the nonmetal sealing material (as Expanded graphite) of fine and close flexibility.The belt pad flake products generally can be made into the wide 3～25mm of being, thick is 3～5mm, length is 30m, sealing occasion with the applicable multiple shape and size of a kind of specification, intercept as required and need not machine shaping, easy for installation, sealing is reliable, using scope is wide, it can avoid forming gasket to need the drawback of huge stocks, economical with materials.

Description of drawings:

Fig. 1, the 2nd, the closed connecting method when the utility model is used to seal;

Fig. 3 is the utility model user mode scheme of installation.

Embodiment

Referring to Fig. 1-3, the banded pad 7 that the self-sticking type net strengthens places between the involutory flanged surface 5,6, by the self-adhesive 3 of pad, on the pad sealing surface that sticks on flange 6 gradually, and according to the shape of flange 6 sealing surfaces, tentatively is fixed into close-shaped.Close tight another flange 5, and under the effect of bolt 4 tight power, pad is compressed, and the sealing surface of flange 5,6 is closely contacted and applying mutually with pad 7, the sealing material 1 of pad 7 inside is fit together more closely with enhancing net 2, self-adhesive 3, and embed mutually.Wherein strengthen net 2 and not only protect inner sealing material 1 not to be closed flange 5,6 pressure feedbacks, can prevent that also pad 7 from not punctured by pressure medium, improved gasket strength and compression resilience greatly, thereby obtained very excellent sealing effect.Closed mouthful of pad can be splicing (Fig. 1) or cross-lapping (Fig. 2), and two flanges are under the effect of the tight power of bolt, because gasket material has fabulous self-healing property, closed interface reaches complete and reliable sealing effect fully.

Claims (3)

1, the banded pad that strengthens of a kind of net places between the involutory flange, it is characterized in that this pad comprises sealed body and is arranged on the coating of main body appearance, and both combine closely into a flexible shoestring.

2, the banded pad that strengthens according to the described net of claim 1 is characterized in that flexible shoestring is flat, and be provided with the self-adhesion sticker on a flat horizontal surface.

3, according to the banded pad of claim 1 or 2 described nets enhancings, it is characterized in that sealed body is an Expanded graphite, coating is wired graphite line woven sleeve, and bed thickness is greater than 1.5mm.

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