CN2279508Y - Safe seal rubber ring for pressure cooker - Google Patents

Abstract

The utility model belongs to the improvement of a sealing ring of a pressure cooker. The basic ring edge of the sealing rubber ring of an ordinary pressure cooker is provided with a plurality of arc-shaped notches corresponding to the non-tooth position of a cooker cover. The rubber ring with the arc-shaped notches can be blown out of the edge of a cooker body via the pressure in the cooker when the air in the cooker is beyond the safe air pressure, and over-pressure air can be discharged so as to ensure the safe use of the pressure cooker. The utility model has the advantages of low cost, easy assembly and disassembly, safe use, etc. and can be matched with a household pressure cooker.

Description

Pressure cooker security seal cushion rubber

The utility model belongs to a kind of improvement of seal ring of pressure cooker.

Existing gasket cement of pressure cooker circle all designs for boost pressure pot sealing effect, and the factor of safety when using as for pressure cooker then increases safety valve or fuse sheet usually in addition on pot cover, this safety installations, production process is loaded down with trivial details, cost height, complex structure.

The purpose of the utility model is to provide a kind of and can seals, and can discharge the pressure cooker security seal cushion rubber of gas in the pot again when the pot body surpasses specified safe air pressure (120KPa) naturally.

The technical solution of the utility model is achieved in that it has one or two above arc-shaped notch on the position of the Ji Quan edge of usual pressure pot O-ring seal relative pot cover uncovered tooth; When the pot internal air pressure rose to specified safe air pressure, the pressure in the pot will eject a pot body edge with the cushion rubber lower seal lip limit of band arc-shaped notch part, form a relief hole, and overvoltage gas from then on relief hole is discharged, thereby guarantees the safety of pressure cooker use.

Below in conjunction with embodiment shown in the drawings the utility model is described in further detail.

Fig. 1 is a schematic cross-section of the present utility model.

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 3 is that the utility model is assemblied in the structural representation when sealing on the pressure cooker.

Fig. 4 is the B-B sectional view of Fig. 3.

Fig. 5 is the view of the utility model when the pressure cooker pressure release.

Fig. 6 is the C-C sectional view of Fig. 5.

Referring to Fig. 1, Fig. 2, the cross section of pressure cooker security seal cushion rubber 2 is " Y " shape, have several arc-shaped notch 1 on the Ji Quan edge of its cushion rubber 2, the position of each arc-shaped notch 1 is corresponding with uncovered tooth place on the pressure cooker lid 3, and arc-shaped notch 1 bore is less than the pot cover 3 contiguous arc length of covering between the tooth.Camber line recess 1 can for 1, more than 2 or 2, but be no more than the quantity of covering tooth at most, be generally 4-6 and be advisable.

Before the utility model uses, should be now with arc-shaped notch 1 contraposition at cushion rubber 2 Ji Quan edges in the position of pot cover 3 uncovered teeth, be fastened on the pressure cooker then.If gases are in normal range (NR) in the pot body 4, promptly pressure is 100KPa when following, and pot cushion rubber 2 that body 4 internal air pressures do not reach arc-shaped notch 1 place collapses from pot body 4 edges, sees Fig. 3, Fig. 4; At this moment, cushion rubber 2 seals.If it is that pressure is 120KPa when above that pot body 4 internal air pressures surpass specified safe air pressure, the cushion rubber of arc-shaped notch 1 will collapse body 4 edges that take the dish out of the pot, and the relief hole 5 in sealing lip limit on the cushion rubber 2 and the 4 edges formation of pot body is seen Fig. 5, Fig. 6; At this moment, overvoltage gas is drained gases by relief hole 5, thus the safety when having guaranteed that pressure cooker uses.

Obviously, after the utility model is assemblied on the pressure cooker, can omit on pot cover 3 additional safety installations, it has, and cost is low, easy to loading and unloading, good sealing effect, advantage such as safe in utilization, can with the supporting use of family's pressure cooker.

Claims (2)

1, a kind of pressure cooker security seal cushion rubber comprises that cross section is the cushion rubber of " Y " shape (2), is characterized in that: along the arc-shaped notch (1) that has on the base edge of cushion rubber (2) more than 1 or 2.

2, pressure cooker security seal cushion rubber according to claim 1 is characterized in that; The position of the arc-shaped notch of being opened (1) is corresponding with pot cover (3) uncovered tooth place.

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