Elastic rubber sleeve for covering probe box mouth of internal liquid pressure intensity experiment device

Abstract

The invention provides an elastic rubber sleeve for covering a probe box mouth of an internal liquid pressure intensity experiment device. The elastic rubber sleeve for covering the box mouth is designed and manufactured especially based on characteristics of the box mouth of the probe of the internal liquid pressure intensity experiment device. The recessed circular elastic rubber sleeve has thestrict dimension and shape specifications and is an elastic rubber line with one circle of rolled edge. The circular diameter of the edge of the recessed circular elastic rubber sleeve is 26 mm to 30mm; the distance between the circle center of the elastic edge and the recessed bottom is 9mm to 6mm; and the recessed bottom is flat. The elastic rubber sleeve has the following beneficial effects: the sleeve can cover the box mouth of the probe of the internal liquid pressure intensity experiment device directly, tightly and firmly; the operation is simple and easy; the sealing effect is good; the experiment requirements are met; the trouble that the elastic rubber sleeve can not be tightened easily and the line can not be tied firmly even though the two workers carry out operation simultaneously based on good teamwork is eliminated; and the operation can be completed simply within short time only by one worker with two hands.

Description

【Technical field】 [0001] The invention relates to an elastic rubber cover covering the opening of a box, in particular to an elastic rubber covering covering the opening of a probe box of a "liquid internal pressure tester". 【Background technique】 [0002] In junior high school physics textbooks, the teaching of "The Pressure of Liquids" is both an important point and a difficult point. Only by using the "liquid internal pressure experimenter" to carry out experimental exploration and draw conclusions through analysis and induction of the law of internal pressure of liquids can students learn interestingly and thoroughly. [0003] The probe of the "liquid internal pressure tester" is a rotatable open garden box. Before the experiment, you must find an elastic rubber film and tie the rubber film tightly on the mouth of the probe box by yourself. It is very difficult. While stretching the rubber film with both hands, use both hands to fasten the thread tightly on the box mout...

AI Technical Summary

Problems solved by technology

[0003] The probe of the "liquid internal pressure tester" is a rotatable open garden box. Before the experiment, you must find an elastic rubber film and tie the rubber film tightly on the mouth of the probe box by yourself. It is very difficult. While stretching the rubber film with both hands, use both hands to fasten the thread tightly on the box mouth. Therefore, two people and four hands need to cooperate with each other to tie the thread to the box mouth. The elastic rubber film must be tightened and the thread fastened tightly. Therefore, it is time-consuming and troublesome to tie the rubber film on the box mouth.

[0004] Can the elastic "finger cots" that are widely used now be shortened and put on the box mouth directly? After repeated experiments, it has been proved that although it can be put on, the rubber film on the box mouth will not be pulled flat and easy to slip after putting on, which cannot meet the experimental requirements.

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