Atmospheric pressure demonstration device

Abstract

The utility model discloses an atmospheric pressure demonstration device, which comprises a container A, a container B and a container C. The container A is an open container, the container B and the container C are both closed containers, the container B is filled with colored water, the bottom of the container A is communicated with the container C through a first hose, the container A is communicated with the container B through a second hose, and the container B is communicated with the container C through a third hose. The container B is communicated with the container C through a third hose; the length of the portion, stretching into the first container, of the first hose is smaller than the length of the portion, stretching into the first container, of the second hose, the other end of the second hose stretches into the second container, a pipe opening of the second hose is immersed into the colored water, and one end of the third hose stretches into the second container, and a pipe opening of the third hose is not immersed into the colored water. And the other end of the third hose extends into the top of the third container. The atmospheric pressure experimental device is simple in structure, easy and convenient to implement, remarkable in experimental effect and ornamental, students can directly feel atmospheric pressure, the learning interest of the students is easily stimulated, the thinking of the students is inspired, and the teaching effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of physics teaching equipment technology, specifically to an atmospheric pressure demonstration device. Background Technology

[0002] In junior high school physics textbooks covering fluid pressure experiments, three experiments are used to demonstrate the existence of atmospheric pressure: the inverted cup experiment, the plastic suction cup pressed against a smooth wall, and sucking a beverage from a cup with a straw. While these experiments explain the phenomenon of atmospheric pressure, based on past teaching experience, students often remain skeptical, primarily due to the emphasis on the word "suction." Students may perceive the inverted cup experiment as water "sucking" onto a piece of paper, the suction cup as "adhering" to a wall, and the straw as the mouth "sucking" the beverage into their mouth. This perception is qualitative, deeply ingrained, and difficult to change. To address this issue, innovative experiments demonstrating atmospheric pressure are necessary. Therefore, a simple, easy-to-implement, effective, and visually appealing atmospheric pressure demonstration device is needed. This device should allow students to directly experience atmospheric pressure, easily stimulating their interest, inspiring their thinking, and improving teaching effectiveness. Utility Model Content

[0003] The purpose of this invention is to provide an atmospheric pressure demonstration device that is simple in structure, easy to implement, has significant experimental effects and is visually appealing, allows students to have a direct experience of atmospheric pressure, easily stimulates students' learning interest, inspires students' thinking, and improves teaching effectiveness.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an atmospheric pressure demonstration device, comprising container A, container B, and container C. Container A is an open container, while containers B and C are both closed containers. Container B contains colored water. The bottom of container A is connected to container C via a first flexible tube, container A is connected to container B via a second flexible tube, and container B is connected to container C via a third flexible tube. The length of the first flexible tube extending into container A is less than the length of the second flexible tube extending into container A. The other end of the second flexible tube extends into container B and its opening is immersed in the colored water. One end of the third flexible tube extends into container B and its opening is not immersed in the colored water. The other end of the third flexible tube extends into the top of container C.

[0005] Furthermore, container A is fixed in place by an iron frame, with the bottom of container A being higher than the top of container C.

[0006] Furthermore, a first regulating valve, a second regulating valve, and a third regulating valve are respectively installed on the first hose, the second hose, and the third hose.

[0007] The beneficial effects of this utility model are as follows: The atmospheric pressure demonstration device disclosed in this utility model, when in use, first opens all regulating valves and injects colorless water into container A, so that the water level overflows the first flexible tube opening but is lower than the second flexible tube opening. At this time, the water flows into container C through the first flexible tube. The injection of water compresses the gas volume in container C, generating air pressure. The compressed air enters container B through the third flexible tube, causing the air pressure in container B to continuously increase. This forces the colored water in container B to enter container A through the second flexible tube, forming a fountain-like spray in container A. By adjusting the first regulating valve, the amount of water sprayed from the fountain can be increased or decreased. The experimental effect is good, visually appealing, and refreshing. This device utilizes recycled materials readily available to students, has a simple structure, is easy to implement, allows students to directly experience atmospheric pressure, and provides significant and visually appealing experimental results. It easily stimulates students' learning interest, inspires their thinking, and improves teaching effectiveness. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0009] In the diagram: 1-Iron frame, 2-First hose, 21-First regulating valve, 3-Second hose, 31-Second regulating valve, 4-Container A, 5-Container B, 6-Third hose, 61-Third regulating valve, 7-Container C. Detailed Implementation

[0010] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0011] Please see Figure 1 This utility model provides a technical solution: an atmospheric pressure demonstration device, including container A 4, container B 5, and container C 7. Container A 4 is an open container, while containers B 5 and C 7 are both closed containers. Container B 5 contains colored water. The bottom of container A 4 is connected to container C 7 via a first flexible tube 2, and container A 4 is connected to container B 5 via a second flexible tube 3. Container B 5 is connected to container C 7 via a third flexible tube 6. The length of the first flexible tube 2 extending into container A 4 is less than the length of the second flexible tube 3 extending into container A 4. The other end of the second flexible tube 3 extends into container B 5 and its opening is immersed in the colored water. One end of the third flexible tube 6 extends into container B 5 and its opening is not immersed in the colored water. The other end of the third flexible tube 6 extends into the top of container C 7.

[0012] Container A 4 is fixedly mounted on an iron frame 1, with its bottom higher than the top of container C 7. This allows colorless water to flow down into container C 7 through the first flexible hose 2.

[0013] The first hose 2, the second hose 3, and the third hose 6 are respectively equipped with a first regulating valve 21, a second regulating valve 31, and a third regulating valve 61. This facilitates the control of water flow and enhances the demonstration effect of the device.

[0014] In use, this invention first opens all regulating valves and injects colorless water into container A 4, ensuring the water level overflows the opening of the first flexible hose 2 but is below the opening of the second flexible hose 3. The water then flows into container C 7 through the first flexible hose 2. The injection of water compresses the gas volume within container C 7, creating air pressure. This compressed air enters container B 5 through the third flexible hose 6, continuously increasing the air pressure within container B 5. This forces the colored water in container B 5 through the second flexible hose 3 into container A 4, forming a fountain-like spray. By adjusting the first regulating valve 21, the volume of water sprayed from the fountain can be increased or decreased. The experimental effect is significant, visually appealing, and refreshing. This device utilizes readily available recycled materials, is simple in structure, easy to implement, and produces significant and visually appealing results. It allows students to directly experience atmospheric pressure, easily stimulating their learning interest, inspiring their thinking, and improving teaching effectiveness.

Claims

1. An atmospheric pressure demonstration device, characterized in that: The container includes container A (4), container B (5) and container C (7). Container A (4) is an open container, while container B (5) and container C (7) are both closed containers. Container B (5) contains colored water. The bottom of container A (4) is connected to container C (7) through a first flexible tube (2). Container A (4) is connected to container B (5) through a second flexible tube (3). Container B (5) is connected to container C (7) through a third flexible tube (6). The length of the first flexible tube (2) extending into container A (4) is less than the length of the second flexible tube (3) extending into container A (4). The other end of the second flexible tube (3) extends into container B (5) and its opening is immersed in the colored water. One end of the third flexible tube (6) extends into container B (5) and its opening is not immersed in the colored water. The other end of the third flexible tube (6) extends into the top of container C (7).

2. The atmospheric pressure demonstration device according to claim 1, characterized in that: Container A (4) is fixedly mounted on an iron frame (1), with the bottom of Container A (4) higher than the top of Container C (7).

3. The atmospheric pressure demonstration device according to claim 1, characterized in that: The first hose (2), the second hose (3), and the third hose (6) are respectively equipped with a first regulating valve (21), a second regulating valve (31), and a third regulating valve (61).

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