Demonstration teaching aid for fluid mechanics teaching

Abstract

The utility model discloses a fluid mechanics teaching demonstration teaching aid, and belongs to the technical field of teaching aids. The teaching aid comprises a bottom plate, a steel plate is fixedly installed on the bottom plate, and two magnetic candle seats are arranged on the steel plate and used for fixing candles. A steel plate strip is vertically mounted on the steel plate, a magnetic blowing nozzle seat is arranged on the steel plate strip, and a blowing nozzle is fixed on the magnetic blowing nozzle seat; a plunger type blowing cylinder is arranged on the bottom plate; and an air outlet of the plunger type blowing cylinder is connected with a blowing nozzle through a hose. The steel plate is provided with a grid scale, the steel plate and the bottom plate are provided with blind holes used for installing steel plate strips, and the bottom plate is further provided with a candle clamping seat and a steel plate strip clamping seat. The plunger type air blowing cylinder is pressed to blow air, so that the influence of airflow on flame can be visually displayed, and students are helped to understand the fluid mechanics principle. The device is simple in structure and convenient to operate, store and store.

Description

Technical Field

[0001] This utility model belongs to the field of teaching aids technology, specifically relating to a teaching demonstration aid for fluid mechanics. Background Technology

[0002] In physics teaching, fluid mechanics concepts are relatively abstract, posing a challenge for students. This is especially true for aerodynamics, where students cannot observe airflow, and concepts like air velocity and pressure cannot be readily grasped through theoretical explanations alone. Currently, there is a lack of simple, easy-to-operate teaching aids that clearly demonstrate this phenomenon, resulting in poor teaching effectiveness. Therefore, developing an experimental demonstration tool that can visually demonstrate the effect of airflow on flames is of significant practical importance. Utility Model Content

[0003] The purpose of this invention is to provide a teaching demonstration tool for fluid mechanics. Through a simple structure and operation, it can intuitively demonstrate the effect of airflow on flame, helping students to better understand the principle of the interaction between airflow and flame in fluid mechanics and improve teaching effectiveness.

[0004] The purpose of this utility model is achieved as follows: A teaching demonstration tool for fluid mechanics includes a base plate, on which a steel plate is fixedly installed. Two magnetic candle holders that can be attached to the steel plate for fixing candles are set on the steel plate. A steel strip is vertically installed on the steel strip, on which a magnetic mouthpiece holder that can be attached to the steel strip is set. An air nozzle is fixed on the magnetic mouthpiece holder. A plunger-type air blower is also set on the base plate. The bottom end of the air blower has an air outlet, and a flexible hose is connected between the air outlet and the air nozzle.

[0005] Preferably, a grid scale is provided on the steel plate. This is used to mark the position of the candles and set the spacing between them.

[0006] Preferably, blind holes are provided on the steel plate and the base plate for mounting the steel strips, which are detachably mounted on the blind holes. This design allows the steel strips to be removed for easy storage.

[0007] Preferably, a candle holder and a steel strip holder are provided on the base plate. This design allows the candle and steel strip to be laid flat and fixed, making it convenient for storage.

[0008] Demonstration of working principle: Light two candles and manually press the plunger-type air blower to supply air. The air is blown out from the nozzle through the hose. When the nozzle is aimed at the space between the two candle flames, according to the principles of fluid mechanics, the air velocity around the flame changes, causing the flame to shift. This visually demonstrates the effect of airflow on the flame.

[0009] Compared with the prior art, the beneficial effects of this utility model include:

[0010] (1) The phenomenon of flame displacement can be seen intuitively, which helps students understand the direction of air flow and can intuitively explain the physical phenomena and principles of airflow and pressure in the air.

[0011] (2) Two magnetic candle holders are installed on the steel plate to fix the candles; the candles can be fixed stably and the candle placement position can be adjusted.

[0012] (3) A magnetic nozzle holder that can be attached to the steel strip is set on the steel strip, and the nozzle is fixed on the magnetic nozzle holder; the position of the nozzle can be easily and flexibly adjusted according to the height of the candle.

[0013] (4) The overall structure is simple, easy to manufacture, and easy to operate. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the fluid mechanics teaching demonstration tool of this utility model in use.

[0015] Figure 2 This is a three-dimensional structural diagram of the fluid mechanics teaching demonstration tool of this utility model in its stored state.

[0016] In the diagram: 1. Base plate, 2. Steel plate, 3. Candle, 4. Magnetic candle holder, 5. Steel strip, 6. Magnetic nozzle holder, 7. Air nozzle, 8. Plunger-type air pump, 9. Air outlet, 10. Hose, 11. Grid ruler, 12. Blind hole, 13. Candle holder, 14. Steel strip holder. Detailed Implementation

[0017] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0018] Example: As shown in Figures 1 and 2, a fluid mechanics teaching demonstration tool includes a base plate 1, a steel plate 2 fixedly mounted on the base plate 1, two magnetic candle holders 4 for fixing candles 3 attached to the steel plate 2, and a steel strip 5 vertically mounted on the steel plate 2. A magnetic nozzle holder 6 for attaching to the steel strip 5 is mounted on the steel strip 5, and an air nozzle 7 is fixed to the magnetic nozzle holder 6. A plunger-type air pump 8 is also mounted on the base plate 1, with an air outlet 9 at its bottom end. A flexible hose 10 connects the air outlet 9 to the air nozzle 7. A grid ruler 11 is provided on the steel plate 2 to mark the position of the candles 3 and set the spacing between them. Blind holes 12 are provided on the steel plate 2 and the base plate 1 for mounting the steel strip 5, and the steel strip 5 is detachably mounted on the blind holes 12. A candle holder 13 and a steel strip holder 14 are provided on the base plate 1, which can lay the candle 3 and the steel strip 5 flat and fix them in place, making them easy to store.

[0019] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A teaching demonstration tool for fluid mechanics, characterized in that, The system includes a base plate (1), on which a steel plate (2) is fixedly installed. Two magnetic candle holders (4) are provided on the steel plate (2) for fixing candles (3) by adsorbing onto the steel plate (2). A steel strip (5) is vertically installed on the steel plate (2). A magnetic mouthpiece holder (6) is provided on the steel strip (5) for adsorbing onto the steel strip (5). An air nozzle (7) is fixed on the magnetic mouthpiece holder (6). A plunger-type air blower (8) is also provided on the base plate (1). An air outlet (9) is provided at the bottom end of the air blower (8). A hose (10) is connected between the air outlet (9) and the air nozzle (7).

2. The fluid mechanics teaching demonstration aid according to claim 1, characterized in that: A grid scale (11) is provided on the steel plate (2).

3. The fluid mechanics teaching demonstration aid according to claim 1, characterized in that: Blind holes (12) for installing the steel strip (5) are provided on the steel plate (2) and the base plate (1), and the steel strip (5) is detachably installed on the blind holes (12).

4. The fluid mechanics teaching demonstration aid according to any one of claims 1 to 3, characterized in that: A candle holder (13) and a steel strip holder (14) are provided on the base plate (1).

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