Atmospheric pressure and vacuum suction presentation device 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 calculate atmospheric pressure, etc., and achieve the effect of strong function and strong interest
Active Publication Date: 2015-02-25
韦佐
View PDF6 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
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
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0020] 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.
[0021] Such as figure 1 with figure 2 As shown, the present invention provides a demonstration device for atmospheric pressure and vacuum suction for teaching experiments, including:
[0022] 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;
[0023] 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...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
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 present invention is a teaching instrument field, which involves a demonstration device for atmospheric pressure and vacuum suction for teaching experiments. Background technique [0002] At the stage of education in primary and secondary schools, atmospheric pressure and vacuum suction power should be described in physics classes. Because the atmospheric pressure is invisible, it must be demonstrated by certain devices.The usual method is to use a water cup, cover it with glass slices filled with water cups, and demonstrate the existence of atmospheric pressure through the atmospheric pressure.This method is easy to obtain and simple operation.However, unfortunately, in this experiment, students cannot truly feel the energy brought by the atmospheric pressure. Insufficient dynamics, insufficient interest, and not calculating the value of the atmospheric pressure. Invention content [0003] Based on the above deficiencies, the present invention has dev...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/12
CPCG09B23/12
Inventor 李长久
Owner 韦佐