CN211016150U

CN211016150U - Candle burning teaching demonstration instrument

Info

Publication number: CN211016150U
Application number: CN201921546467.0U
Authority: CN
Inventors: 刘宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-07-14
Anticipated expiration: 2029-09-17

Abstract

The utility model discloses a candle burning teaching demonstration appearance, establish including candle and cover the beaker of candle top, the beaker is in through the support frame back-off the top of candle, the beaker with still be provided with the carbon dioxide detector between the support frame, the carbon dioxide detector include the overlap joint in backup pad on the support frame with be fixed in lime wash storage tank in the backup pad, lime wash storage tank cover is located inside the beaker, offer the through-hole that is used for letting in the combustion products on the lime wash storage tank. The utility model adopts the above structure candle burning teaching demonstration appearance, the below of through-hole is arranged in to the candle that only needs to light during the experiment, and the water that the candle burning produced can condense into the drop of water at the beaker inner wall, and the carbon dioxide that produces simultaneously lets in the lime wash storage tank for the lime wash of inslot becomes muddy, inside most entering beaker because of the combustion products, the experiment phenomenon is obvious, and only need carry out once experiment, and is easy and simple to handle.

Description

Candle burning teaching demonstration instrument

Technical Field

The utility model relates to a candle burning demonstration experiment technique especially relates to a candle burning teaching demonstration appearance.

Background

The candle burning demonstration experiment that involves in the middle of first three chemical experiments needs to make the student know the product of candle burning through the demonstration of experiment, and figure 1 is current candle burning demonstration appearance arrangement diagram, and as shown in figure 1, in this experimentation, at first, cover a dry and cold beaker above the flame, can observe that the beaker inner wall appears colorless liquid drop, can draw the conclusion that the candle burning product is water. Then, after the beaker with the inner wall wetted by lime water is covered above the flame, the lime water is turbid, and the conclusion that the candle combustion product is carbon dioxide can be obtained, but the phenomenon is not obvious due to limited coverage of the lime water on the inner wall of the beaker; or the beaker is covered above the flame to collect the carbon dioxide, the carbon dioxide is taken down and poured into the lime water after a period of time, the collected carbon dioxide is easy to overflow in the process of taking down the beaker and pouring the lime water, so that the amount of the carbon dioxide in the beaker is insufficient, and the experimental phenomenon is not obvious. And has the following disadvantages:

1. the overall operation is somewhat tedious and requires two experiments to verify the experimental products (water and carbon dioxide).

2. The height of the beaker cover above the candle flame is not well controlled, namely, the candle is easy to be burnt insufficiently to generate carbon black and the like, and meanwhile, the heat generated by the candle is transferred to the beaker, so that the holding of the beaker becomes difficult; and the product water and carbon dioxide are not easy to collect when the beaker is too high, so that the experimental phenomenon cannot be observed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a candle burning teaching demonstration appearance, the below of through-hole is arranged in to the candle that only needs to light during the experiment, and the water that the candle burning produced can condense into the drop of water at the beaker inner wall, and the carbon dioxide that produces simultaneously lets in the lime wash storage tank for the lime wash of inslot becomes muddy, inside most entering beaker because of the combustion products, so experimental phenomenon is obvious, and only need carry out once experiment, and is easy and simple to handle.

In order to realize the above object, the utility model provides a candle burning teaching demonstration appearance, establish including candle and cover the beaker of candle top, the beaker is in through the support frame back-off the top of candle, the beaker with still be provided with the carbon dioxide detector between the support frame, the carbon dioxide detector including the overlap joint in backup pad on the support frame with be fixed in lime wash storage tank in the backup pad, lime wash storage tank cover is located inside the beaker, offer the through-hole that is used for letting in the combustion products on the lime wash storage tank.

Preferably, the candle is fixed on a backing plate, and the backing plate comprises at least one overlapped wood plate.

Preferably, the support frame is a tripod.

Preferably, the lime water accommodating groove is a square annular groove.

Preferably, the lime water containing tank is made of glass.

Therefore, the utility model discloses an adopt candle burning teaching demonstration appearance of above-mentioned structure, the below of through-hole is arranged in to the candle that only needs to light during the experiment, and the water that the candle burning produced can condense into the drop of water at the beaker inner wall, and the carbon dioxide that produces simultaneously lets in the lime wash storage tank for the lime wash of inslot becomes turbid, inside most entering beaker because of the combustion products, the experiment phenomenon is obvious, and only need carry out once experiment, easy and simple to handle.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

FIG. 1 is a layout view of a prior candle burning demonstration apparatus;

fig. 2 is a schematic structural view of the candle burning teaching demonstration instrument according to the embodiment of the present invention.

Wherein: 1. a beaker; 2. a through hole; 3. a lime water accommodating groove; 4. a support plate; 5. a support frame; 6. a candle; 7. a backing plate.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, and it should be noted that the present embodiment is based on the technical solution, and the detailed embodiments and the specific operation processes are provided, but the protection scope of the present invention is not limited to the present embodiment.

Fig. 2 is the utility model discloses an embodiment a structural schematic diagram of candle burning teaching demonstration appearance, as shown in fig. 2, the utility model discloses a structure, establish beaker 1 in candle 6 top including candle 6 and cover, beaker 1 is through 5 back-offs of support frame in the top of candle 6, and is concrete, support frame 5 is the tripod, still be provided with the carbon dioxide detector between beaker 1 and the support frame 5, the carbon dioxide detector includes backup pad 4 of overlap joint on support frame 5 and is fixed in lime wash storage tank 3 on backup pad 4, wherein, lime wash storage tank 3 is the square ring channel, and the material of lime wash storage tank 3 is the glass material, lime wash storage tank 3 covers and is established inside beaker 1, offer the through-hole 2 that is used for letting in combustion products on the lime wash storage tank 3.

Preferably, the candle 6 is fixed on the backing plate 7, the backing plate 7 comprises at least one wood plate which is stacked, the thickness of the backing plate 7 can be changed by changing the number of the wood plates, and then the height between the candle 6 and the beaker 1 is changed, so that air can fully flow through flame, and the candle 6 can be combusted more fully.

The experimental steps are as follows:

1. a fixed support frame 5;

2. placing a carbon dioxide detector on the top of the support frame 5, and adding a proper amount of saturated lime water into the tank by using an injector;

3. reversely buckling the beaker 1 on the top of a support plate 4 of the carbon dioxide detector, and covering a lime water accommodating groove 3 of the carbon dioxide detector in the beaker 1;

4. placing the lighted candle 6 in the support frame 5 through the backing plate 7 and aligning with the through hole 2 of the lime water accommodating groove 3;

5. observation of the achievement phenomenon and recording.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solution of the present invention can still be modified or replaced by other equivalent means, and the modified technical solution can not be separated from the spirit and scope of the technical solution of the present invention.

Claims

1. The utility model provides a candle burning teaching demonstration appearance, includes that candle and cover establish the beaker of candle top, its characterized in that: the beaker is buckled upside down through the support frame above the candle, a carbon dioxide detector is further arranged between the beaker and the support frame, the carbon dioxide detector comprises a support plate and a lime water accommodating groove, the support plate is lapped on the support frame, the lime water accommodating groove is fixed on the support plate, the lime water accommodating groove is covered inside the beaker, and a through hole for introducing combustion products is formed in the lime water accommodating groove.

2. The candle burning teaching demonstration device of claim 1 wherein: the candle is fixed on the backing plate, and the backing plate comprises at least one wood plate which is spliced.

3. The candle burning teaching demonstration device of claim 1 wherein: the support frame is a tripod.

4. The candle burning teaching demonstration device of claim 1 wherein: the lime water accommodating groove is a square annular groove.

5. The candle burning teaching demonstration device of claim 1 wherein: the lime water accommodating groove is made of glass.