A Demonstration Device of Atmospheric Pressure and Vacuum Suction for Teaching Experiments
A technology of vacuum suction and demonstration device, applied in the field of teaching instruments, can solve the problems of insufficient dynamics, insufficient interest, inability to truly feel atmospheric pressure energy, etc., and achieve the effect of strong interest and strong function
Active Publication Date: 2016-10-05
韦佐
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Problems solved by technology
However, unfortunately, in this experiment, the students could not really feel the energy brought by the atmospheric pressure, the dynamics were not enough, the interest was not enough, and the value of the atmospheric pressure could not be calculated
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[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.
[0020] Such as figure 1 and figure 2 As shown, the present invention provides a demonstration device for atmospheric pressure and vacuum suction for teaching experiments, including:
[0021] Water tank 5, which is arranged on an L-shaped support, is used to store water, and the height of water tank 5 in the vertical direction is adjustable;
[0022] A vacuum box 1 is provided with a manual vacuum pump 13 on one side and a drain pipe 14 on the other side; the upper part of the vacuum box 1 is vertically connected to a main conduit 2, and the upper end of the main conduit 2 is extended to form a first branch pipe 3 and the second branch pipe 4, the first branch pipe 3 and the second branch pipe 4 are respectively provided with a first valve 11 and a second valve 12, and the ...
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The invention discloses an atmospheric pressure and vacuum suction presentation device for teaching experiments. The presentation device comprises a water tank and a vacuum box. The upper portion of the vacuum box is vertically connected with a main guide pipe, the upper end of the main guide pipe extends to form a first branch pipe and a second branch pipe, a first valve and a second valve are arranged on the first branch pipe and the second branch pipe respectively, and the first branch pipe and the second branch pipe are each divided into an arc segment and a vertical segment. The first branch pipe is transparent, and the lower end of the vertical segment of the first branch pipe extends into the water tank and is located below the water level. The vertical segment of the second branch pipe is provided with a piston, and a tray is hung at the lower end of the piston through a hook and used for bearing weights. The section of the main guide pipe is a rectangle, a waterwheel is arranged on the portion, close to the vacuum box, of the main guide pipe, a rotating shaft of the waterwheel penetrates through the main guide pipe to be connected with a generator, and the generator supplies power to a bulb through a wire. The presentation device is high in interestingness and multifunctional.
Description
technical field [0001] The invention belongs to the field of teaching instruments, in particular to a demonstration device for atmospheric pressure and vacuum suction used in teaching experiments. Background technique [0002] At the stage of primary and middle school education, atmospheric pressure and vacuum suction are taught in physics classes. Since atmospheric pressure is invisible and intangible, certain devices must be used to demonstrate it. The usual practice is to use a water glass to demonstrate the existence of atmospheric pressure by covering the mouth of a water-filled glass with a glass piece and holding the glass piece through atmospheric pressure. The material of this method is easy to obtain and the operation is simple. But, unfortunately, in this experiment, the students could not really feel the energy brought by the atmospheric pressure, the dynamics were not enough, the fun was not enough, and the value of the atmospheric pressure could not be calcula...
Claims
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IPC IPC(8): G09B23/12
CPCG09B23/12
Inventor 韦佐
Owner 韦佐