Tea cup having screwed cover and being easy to open and cup cover
A technology for cup lids and teacups, applied to drinking vessels, etc., can solve problems such as inconvenient tea drinking and difficulty in unscrewing cup lids, and achieve the effects of increasing competitiveness, eliminating pressure differences, and increasing costs
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[0017] figure 1 It is a push-type sealing device: as shown by the arrow, the top of the cup cover 2 has an opening 14 with a large aperture in the upper half and a small aperture in the lower half. The upper half (that is, the upper half of the opening 14 ) with the sealing ring 7 at the bottom and the middle column 6 is covered with the "I" shaped pressing block 3 with the spring 4 placed in the opening 14 . Under normal circumstances, due to the tension of the spring 4, the sealing ring 7 is lifted up to block the bottom end of the opening 14. The top of the pressing block 3 is equal to or slightly higher than the top of the cup cover 2 . For smoother air intake, an air intake groove 8 is arranged on the central pillar 6 .
[0018] Working principle: When people are making tea, the cup lid 2 is tightly screwed on the cup (the cup has no technical features, which are omitted in the figure). As the boiling water in the cup cools down, the volume of the water shrinks, and a s...
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