Hourglass

Abstract

The invention discloses an hourglass, which comprises bottle bodies (1), a communicating tube (2) and an hourglass neck (3), wherein the bottle bodies (1) have a dumbbell shape and are made of transparent materials; two ends of the bottle bodies (1) are provided with cavities; the middle of the dumbbell-shaped bottle bodies (1) is provided with the hourglass neck (3); a connecting part of the cavities and the hourglass neck (3) is provided with a conical joint; a sealing surface of the same cavity opposite to the joint is an end face; the two cavities are communicated through the hourglass neck (3); water (4) is filled in the bottle bodies (1); the stored quantity of the water (4) accounts for 10 to 60 percent of a cavity; the communicating tube (2) is arranged outside the bottle bodies (1); and one end of the communicating tube (2) is arranged at a position equivalent to 65-70 percent of the length of the cavity from the end face, and the other end of the communicating tube (2) is arranged at the same position of the symmetrical cavity. The hourglass has high timing precision, a closed structure and an attractive appearance, and is convenient to carry.

Description

Technical field [0001] The present invention involves the measurement field of time interval, which specifically involves a kind of water droplet leak. Background technique [0002] People need to use timing tools in most work and leisure activities. Ancient timing tools include hourglass and water leakage, but now the water leakage has not improved much.The shortcomings such as short timing range still exist, and the details are as follows. [0003] The hourglass is composed of two glass balls and a narrow pipeline.Sand full of glass balls on the top of the glass ball through the narrow pipeline flows into the bottom glass ball to measure the time.When all the sand flows to the bottom glass ball, the hourglass can be turned upside down for time measurement.Due to the granular characteristics of the internal substance, the hourglass has a larger timing error, and the smaller the volume, the shorter the length of the timing, and the larger timing value also means a huge volume, po...

AI Technical Summary

Problems solved by technology

This is the basic style and principle of the current hourglass, but the granularity of the sand makes the structure of the bottle body must be streamlined and smooth, resulting in a single configuration of the bottle body, and the fluidity of the sand particles is not as good as that of water, resulting in low timing accuracy and short timing length.

If the sand is simply replaced with water, the leak necks of the upper and lower bottles of the hourglass must be enlarged so that both water and gas can pass through, and the width of the leak neck will inevitably be enlarged. As a result, water will quickly flow into another bottle, and the timing effect will be reduced lost

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