CN2713228Y - Vacuum seal ring - Google Patents

Abstract

The utility model relates to a vacuum seal ring, which is an elastic annular body whose upper surface and the lower surface are provided with teeth along the radical direction. The inner side and the outer side of the upper surface or the lower surface of the annular body take the step shapes; the radical profiles of the teeth on the annular body are the triangles or the trapezoids; the vacuum seal ring of the utility model and a connection clamping band are used simultaneously, which can cause the airtight performance of the butting flange plate to be excellent; the vacuum seal ring can keep the excellent vacuum degree of the equipment especially used for the vacuum-pumping equipment.

Description

Vaccum seal ring

Technical field

The utility model relates to a kind of vaccum seal ring.

Background technique

Seal ring is a kind of conventional machinery element, and it mainly is to solve the machinery sealing problem between the portion in addition, as prevent to leak, leakage of oil or gas leakage, its material is selected plastic material mostly for use.The structure of seal ring commonly used has O shape circle, v shaped ring, sheet shape circle or the like.Along with the development of technology, the innovation of mechanical structure, constantly performance and the structure to seal ring proposes new requirement, to adapt to different mechanical structures to the sealing requirement.

Generally between pipeline, housing, mostly adopt the flange plate butt joint, often be connected and fixed with bolt, Sealing commonly used is an O-ring seals, this being tightly connected, prevent dust escape still can, but to prevent gas leakage, effect is not good enough.In order to guarantee good sealing effect, the abutted flange dish can adopt ring-shaped clip, and is evenly fixing along hoop flange plate, and to keep good air-tightness, seal ring just must be improved or redesign for this reason.

The model utility content

The purpose of this utility model is to improve the shortcoming of prior art and a kind of vaccum seal ring is provided, and to improve tightness, guarantees the degree of vacuum in the vacuum structure.

For achieving the above object, the utility model is taked following design proposal: it is the rubber-like annular solid that a upper and lower surface radially is equipped with tooth, the upper surface of described annular solid or the inboard of lower surface become stepped with the outside, so that put the object of sealed connection on the ladder plane.Tooth radial section on the described annular solid is a triangle or trapezoidal.

The utility model vaccum seal ring and jointing clip use simultaneously, can make the air-tightness of abutted flange dish good, especially for vaccum-pumping equipment, can keep good degree of vacuum in the equipment.

Description of drawings

Fig. 1 the utility model structural representation

Fig. 2 the utility model user mode structural representation

Embodiment

As shown in Figure 1 and Figure 2, the utility model is the rubber-like annular solid 1 that a upper and lower surface radially is equipped with tooth 11.Tooth 11 radial sections on this annular solid are triangle or trapezoidal, the inboard of the lower surface of described annular solid becomes stepped with the outside, 12 put sealed connection object 2 on the ladder plane, and described abutted flange dish 3 adopts ring-shaped clip 4 evenly fixing along hoop flange plate.

Claims (3)

1, a kind of vaccum seal ring is characterized in that: it is the rubber-like annular solid that a upper and lower surface radially is equipped with tooth.

2, a kind of vaccum seal ring according to claim 1 is characterized in that: the tooth radial section on the described annular solid is a triangle or trapezoidal.

3, a kind of vaccum seal ring according to claim 1 is characterized in that: the upper surface of described annular solid or the inboard of lower surface become stepped with the outside.

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