CN203192281U

CN203192281U - Centrifugal force spin-drying demonstration instrument

Info

Publication number: CN203192281U
Application number: CN 201320259203
Authority: CN
Inventors: 包乌云特古斯
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-28
Filing date: 2013-04-28
Publication date: 2013-09-11
Anticipated expiration: 2023-04-28

Abstract

The utility model relates to an experiment teaching aid for centrifugal force, in particular to a centrifugal force spin-drying demonstration instrument. The centrifugal force spin-drying demonstration instrument is characterized in that the demonstration instrument is provided with a circular turntable (1), wherein a rotating shaft (2) is fixedly arranged under the turntable (1), mesh enclosures (4) or transparent cups (7) with visible inside are respectively and fixedly arranged at different radius parts on the turntable (1), and wet towels (6) and liquid are additionally adopted. The centrifugal force spin-drying demonstration instrument has the beneficial effects that after the turntable rotates, the throwing speed of liquid on the towels far away from the circle center is faster. Therefore the relationship between the centrifugal force and the rotation radius and the rotation speed can be shown and is particularly intuitional, the understanding is convenient, and in addition, the centrifugal force spin-drying demonstration instrument has the advantages that the structure is simple, the cost is low, the operation is convenient, and the like.

Description

The dehydrate demonstrator

Technical field

The utility model relates to a kind of experiment teaching aid about centrifugal force, i.e. a kind of dehydrate demonstrator.

Background technology

Centrifugal force refers to object in the power that deviates from the center of circle that produces when the center of circle moves in a circle, the size of its power and the angular velocity of object and object are directly proportional to the distance in the center of circle.In the past, main by the derivation of equation and the oral centrifugal force of separating by way of example, very not directly perceived in the teaching, the student understands relatively effort.

Summary of the invention

The purpose of this utility model provides and a kind ofly can show centrifugal force intuitively, is convenient to understand, and simple and practical experiment teaching aid.

Above-mentioned purpose is realized by following technical scheme: develop a kind of dehydrate demonstrator, be characterized in: this demonstrator has the rotating disk of a circle, rotating shaft is fixedly arranged below the rotating disk, in different radius guard or the transparent cup that can see inside arranged fixedly respectively above the rotating disk, other is furnished with towel and liquid.

Said rotating shaft is by driven by motor.

Said rotating shaft is driven by handle.

Said guard is the container that is surrounded by screen cloth, and the liquid of adapted is water.

Said transparent cup is glass cylinder, and the liquid of adapted is dark pigment.

The beneficial effects of the utility model are: after the dial rotation, very fast apart from the speed that the liquid on the towel far away of the center of circle is thrown out of, can show the relation of centrifugal force and the radius of gyration and rotating speed thus, directly perceived especially, be convenient to understand, and have advantages such as simple in structure, with low cost, easy to operate.

Description of drawings

Fig. 1 is the front view of first kind of embodiment;

Fig. 2 is the vertical view of first kind of embodiment;

Fig. 3 is the operating position synoptic diagram of first kind of embodiment;

Fig. 4 is the circuit diagram of first kind of embodiment;

Fig. 5 is the front view of second kind of embodiment;

Fig. 6 is the effect contrast figure of second kind of embodiment.

Among the figure as seen: rotating disk 1, rotating shaft 2, pickup groove 3, guard 4, motor 5, towel 6, transparent cup 7, gearing 8, handle 9.

Embodiment

The total design of the utility model is: wet towel is fixed on the position of rotating disk different radii, observes wet liquid after the dial rotation and throw away situation, action of centrifugal force is described.Introduce two kinds of embodiment below in conjunction with accompanying drawing.

First kind of embodiment: as shown in Figure 1, 2: this demonstrator has the rotating disk 1 of a circle, rotating shaft 2 is fixedly arranged below the rotating disk 1, have pickup groove 3 in different radius above the rotating disk 2, the guard 4 that screen cloth surrounds is installed in the pickup groove 3, rotating shaft 2 has electricity 5 to drive, and other is furnished with towel 6 and liquid.

Use-pattern: in conjunction with Fig. 5 as seen, fix three guards 4 above the rotating disk 1, one of them guard 4 is fixed on circle centre position, and another guard 4 is fixed on the center of circle between the edge, the 3rd edge that is fixed on rotating disk 1.Three towels 6 are together dipped in water, and redundant moisture is sloughed in extruding together, reaches identical humidity, is put into three guard 4 the insides then respectively.Start motor 5, drive rotating disk 1 high-speed rotation.Can see that the water of the towel of circle centre position seldom throws away this moment, the center of circle to the water of the towel between the edge throw away more, and the water that the towel of edge throws away is maximum.After rotating certain hour, when being preferably in towel 6 dryings at edge, shut down, take out three towels 6 and compare, will find that the towel of outside is the most dried, middle towel is not also done, and the towel of circle centre position also has a lot of water.This just can illustrate that radius is more big, the reason that centrifugal force is more big.

In conjunction with the circuit diagram that the visible motor of Fig. 45 is equipped with, be provided with fast, slow, stop three gears, can finish above-mentioned demonstration, can also carry out the centrifugal force contrast under the different rotating speeds.

Second kind of embodiment: demonstrator shown in Figure 5 is similar to the demonstrator structure that first kind of embodiment introduces, rotating disk 1 and rotating shaft 2 are also arranged, also be provided with pickup groove above the rotating disk 1, difference has 3 points: the one, and what install on the pickup groove is not guard, but transparent cup 8 can adopt glass cylinder.The 2nd, cancel motor, and adopted handle 8, drive rotating disk 2 by gearing 9 and rotate.The 3rd, the liquid that towel 6 dips in is not colourless water, but colored liquid.Recommend to adopt red liquid pigment, in order to better observe the demonstration effect.

During demonstration, three towels 6 are together dipped in the liquid of full redness, together be expressed to the humidity of No drip type body, put into each cup then respectively, shake handle 8, rotating disk 1 quick rotation, can see state shown in Figure 6: the transparent cup 7 of circle centre position is thrown on the wall of cup redness seldom, the center of circle is red obviously dark to the transparent cup 7 between the edge, and the redness on the transparent cup of ragged edge is the heaviest.The relation of radius and centrifugal force is described thus, can makes the student stay darker impression.

Claims

1. dehydrate demonstrator, it is characterized in that: this demonstrator has the rotating disk (1) of a circle, rotating shaft (2) is fixedly arranged below the rotating disk (1), in different radius guard (4) or the transparent cup (7) that can see inside arranged fixedly respectively above the rotating disk (1), other is furnished with towel (6) and liquid.

2. dehydrate demonstrator according to claim 1, it is characterized in that: said rotating shaft (2) is driven by motor (5).

3. dehydrate demonstrator according to claim 1, it is characterized in that: said rotating shaft (2) is driven by handle (9).

4. dehydrate demonstrator according to claim 1, it is characterized in that: said guard (4) is the container that is surrounded by screen cloth, and the liquid of adapted is water.

5. dehydrate demonstrator according to claim 1, it is characterized in that: said transparent cup (7) is glass cylinder, the liquid of adapted is dark pigment.