Buoyancy demonstration device based on physics teaching

Abstract

The utility model discloses a buoyancy demonstration device based on physics teaching, which comprises a glass box, a bottom plate and a first fixing ring, one side of the upper surface of the bottom plate is fixedly connected with a supporting column, the supporting column is movably connected with the first fixing ring, and one side of the inner surface of the first fixing ring is in threaded connection with a first bolt; the outer surface of the first bolt is fixedly connected with a first supporting rod. According to the buoyancy demonstration device based on physics teaching, through the arrangement of the bottom plate, the supporting column, the first fixing ring, the first bolt and the first supporting rod, when the buoyancy demonstration device is used, after a teacher demonstrates buoyancy in water, the first bolt is twisted to reduce the looseness of the contact area with the first supporting rod, and the teacher holds the first supporting rod by hand and uplifts the first supporting rod, so that the buoyancy is demonstrated. The first fixing ring moves upwards until the first fixing ring is disengaged, dismounting is completed, a teacher can conveniently replace a buoyancy experiment device in the air, and the dismounting effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching tools, in particular to a buoyancy demonstration device based on physics teaching. Background Art

[0002] The buoyancy demonstration device is designed for teaching and experimental purposes to help understand and demonstrate the principle of buoyancy. This device usually relies on the Archimedes principle, that is, when an object is fully or partially immersed in a liquid (or gas), it will be subjected to an upward force equal to the weight of the fluid displaced by the object. The following are some key technical background and concepts of the buoyancy demonstration device: Archimedes principle This is the core principle of the buoyancy demonstration device. The Archimedes principle provides a method for calculating buoyancy, that is, the buoyancy is equal to the weight of the displaced fluid. Buoyancy demonstration devices are usually used in educational occasions, such as school physics classes or science fairs, to help students intuitively understand the principle of buoyancy. Through practical operation and observation, students can better grasp the concept of buoyancy, calculation methods and related physical principles.

[0003] After searching, China Patent Publication (Announcement) No. 201810856049.5 discloses a buoyancy demonstration device based on physics teaching. The patent is equipped with a support arm through a screw through a thread, and the guide rod passes through the support arm, and the guide rod and the support arm are movably installed. The horizontal part of one end of the support arm extends into the weighing cup, and the horizontal part of one end of the support arm is movably penetrated with a connecting rod, and the vertical part of one end of the support arm is fixed with a contact piece by a screw, and a contact block is fixedly installed at one end of the connecting rod, and the contact block is located below the contact piece, and a floating ball is fixedly installed at the other end of the connecting rod, and the floating ball is located below the horizontal part of one end of the support arm to complete the buoyancy test. Although the above patent can measure the buoyancy, it cannot be disassembled, so that the teacher cannot disassemble it by setting bolts. The demonstration of buoyancy in the air can be carried out by disassembly, and the effect of water on the buoyancy of the test object can be seen through the U-shaped glass box. The teacher twists the drain valve to make the water flow out, and the scale value is restored, so that the students remember it deeply and the drainage effect is achieved at the same time. Therefore, it is necessary to design a buoyancy demonstration device based on physics teaching. Summary of the invention

[0004] The main purpose of the utility model is to provide a buoyancy demonstration device based on physics teaching, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A buoyancy demonstration device based on physics teaching includes a glass box, a bottom plate and a first fixing ring, wherein a support column is fixedly connected to one side of the upper surface of the bottom plate, the support column is movably connected to the first fixing ring, a first bolt is threadedly connected to one side of the inner surface of the first fixing ring; and a first support rod is fixedly connected to the outer surface of the first bolt.

[0007] In order to achieve the effect of detecting the weight of an object, as a buoyancy demonstration device based on physics teaching, the utility model has a spring dynamometer fixedly connected to one side of the outer surface of the first support rod, a tension rod movably connected to one side of the lower surface of the spring dynamometer, and a first hook fixedly connected to one side of the lower surface of the tension rod.

[0008] In order to achieve the purpose of drainage, as a buoyancy demonstration device based on physics teaching of the utility model, the glass box is U-shaped, a drainage valve is fixedly connected to one side of the outer surface of the glass box, and a hose is fixedly connected to one side of the outer surface of the drainage valve.

[0009] In order to enable the disassembly function, as a buoyancy demonstration device based on physics teaching of the utility model, one side of the outer surface of the support column is interactively connected with a second fixing ring, one side of the inner surface of the second fixing ring is threadedly connected with a second bolt, and one side of the outer surface of the second fixing ring is fixedly connected with a second support rod.

[0010] In order to have the function of hanging objects, as a buoyancy demonstration device based on physics teaching of the utility model, one side of the outer surface of the second support rod is rotatably connected with a scale, and one side of the lower surface of the scale is fixedly connected with a second hook.

[0011] In order to achieve a weighing effect, as a buoyancy demonstration device based on physics teaching of the utility model, one side of the outer surface of the second hook is movably connected with weights, and the number of the weights is three.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. In the utility model, through the arrangement of the bottom plate, the support column, the first fixing ring, the first bolt and the first support rod, when in use, after the teacher has completed the demonstration of buoyancy in water, the teacher twists the first bolt to reduce the looseness of the contact area with the first support rod. The teacher holds the first support rod and lifts the first support rod upward to move the first fixing ring upward until it is detached, thereby completing the disassembly, making it convenient for the teacher to replace the buoyancy experiment equipment in the air and achieve the purpose of disassembly.

[0014] 2. In the utility model, through the arrangement of the glass box, the drain valve and the hose, when in use, the teacher pours water into one side of the glass box, and through the effect of pressure, the water in the glass box is made to reach a level effect, and by slowly adding water into the glass box, the water slowly rises to a point where the effect of water on the buoyancy of the test object can be seen. The teacher twists the drain valve to make the water flow out, and the scale value is restored, so that the students can remember deeply and the drainage effect can be achieved at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a right side structural schematic diagram of an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the glass box structure of an embodiment of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of a scale according to an embodiment of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the first fixing ring of an embodiment of the utility model.

[0019] In the figure: 1. glass box; 2. bottom plate; 3. first fixing ring; 4. support column; 5. first bolt; 6. first support rod; 7. spring dynamometer; 8. tension rod; 9. first hook; 10. drain valve; 11. hose; 12. second fixing ring; 13. second bolt; 14. second support rod; 15. scale; 16. second hook; 17. weight. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0021] like Figure 1-4 As shown, a buoyancy demonstration device based on physics teaching includes a glass box 1, a bottom plate 2 and a first fixing ring 3, a support column 4 is fixedly connected to one side of the upper surface of the bottom plate 2, the support column 4 is movably connected to the first fixing ring 3, and a first bolt 5 is threadedly connected to one side of the inner surface of the first fixing ring 3;

[0022] In this embodiment, the outer surface of the first bolt 5 is fixedly connected to the first support rod 6 .

[0023] During specific use, after demonstrating buoyancy in water, the teacher twists the first bolt 5 to reduce the looseness of the contact area with the first support rod 6. The teacher holds the first support rod 6 and lifts the first support rod 6 upward to move the first fixing ring 3 upward until it is detached, completing the disassembly, making it convenient to replace the buoyancy experiment equipment in the air to achieve the purpose of disassembly.

[0024] In this embodiment, a spring dynamometer 7 is fixedly connected to one side of the outer surface of the first support rod 6, a tension rod 8 is movably connected to one side of the lower surface of the spring dynamometer 7, and a first hook 9 is fixedly connected to one side of the lower surface of the tension rod 8.

[0025] When in use, a spring dynamometer 7 is fixedly connected to the first support rod 6, and a tension rod 8 and a first hook 9 are fixedly connected thereto, so that an object can be hung on the first hook 9 to detect the gravity of the object.

[0026] In this embodiment, the glass box 1 is in a U-shape, a drain valve 10 is fixedly connected to one side of the outer surface of the glass box 1 , and a hose 11 is fixedly connected to one side of the outer surface of the drain valve 10 .

[0027] When in use, water is poured into one side of the glass box 1, and the water in the glass box 1 is made level by pressure. Water is slowly added to the glass box 1, and the water slowly rises to a level so that the effect of water on the buoyancy of the test object can be seen. The teacher twists the drain valve 10 to make the water flow out, and the value of the scale 15 is restored, so that the students can remember it deeply and the drainage effect can be achieved at the same time.

[0028] In this embodiment, one side of the outer surface of the support column 4 is interactively connected with a second fixing ring 12, one side of the inner surface of the second fixing ring 12 is threadedly connected with a second bolt 13, and one side of the outer surface of the second fixing ring 12 is fixedly connected with a second support rod 14.

[0029] During specific use, the second bolt 13 is twisted to reduce the looseness of the contact area with the second support rod 14. The teacher holds the second support rod 14 and lifts the second support rod 14 upward to move the second fixing ring 12 upward until it is detached, thereby completing the disassembly.

[0030] In this embodiment, a scale 15 is rotatably connected to one side of the outer surface of the second support rod 14 , and a second hook 16 is fixedly connected to one side of the lower surface of the scale 15 .

[0031] When used specifically, by arranging the scale 15 on the second support rod 14, the measuring object is hung through the second hook 16, and the balloon containing gas is suspended, so that the effect of ascending and descending movement is achieved.

[0032] In this embodiment, one side of the outer surface of the second hook 16 is movably connected with a weight 17 , and the number of the weights 17 is three.

[0033] When used specifically, by hanging the weight 17 on the second hook 16, the weight 17 is added during measurement until the balloon stays on the air balance turntable, thereby obtaining the purpose of experimental results.

[0034] Working principle: In use, the teacher installs an object on the first hook 9 of the spring dynamometer 7, measures the weight of the object through the spring dynamometer 7, and records the data. At the same time, the object is suspended above the glass box 1 without touching the bottom and side walls of the glass box 1. The teacher adds a sufficient amount of water to one side of the glass box 1, and the spring dynamometer 7 displays the weight of the object in the water. The buoyancy is obtained by F buoyancy = F air buoyancy - F liquid buoyancy to complete the experiment. The teacher twists the drain valve 10 to make the water flow out, and the scale 15 value is restored, which makes the students remember deeply and achieves the effect of drainage. After the teacher demonstrates the buoyancy in water, By twisting the first bolt 5, the contact area with the first support rod 6 is reduced and loosened. The teacher holds the first support rod 6 and lifts the first support rod 6 upward to move the first fixing ring 3 upward until it is detached, completing the disassembly, which is convenient for replacing the buoyancy experiment equipment in the air. By providing a scale 15 on the second support rod 14, the measuring object is hung through the second hook 16, and the balloon containing gas is hung to reach the recorded weight that can be moved up and down. The weight 17 is hung on the second hook 16, so that the weight 17 is added during measurement until the balloon stays on the air balance turntable to obtain the purpose of the experimental result.

[0035] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A buoyancy demonstration device based on physics teaching, comprising a glass box (1), a bottom plate (2) and a first fixing ring (3), characterized in that: A support column (4) is fixedly connected to one side of the upper surface of the base plate (2); the support column (4) is movably connected to the first fixing ring (3); a first bolt (5) is threadedly connected to one side of the inner surface of the first fixing ring (3); and a first support rod (6) is fixedly connected to the outer surface of the first bolt (5).

2. A buoyancy demonstration device based on physics teaching according to claim 1, characterized in that: A spring dynamometer (7) is fixedly connected to one side of the outer surface of the first support rod (6), a tension rod (8) is movably connected to one side of the lower surface of the spring dynamometer (7), and a first hook (9) is fixedly connected to one side of the lower surface of the tension rod (8).

3. A buoyancy demonstration device based on physics teaching according to claim 1, characterized in that: The glass box (1) is in a U-shape, and a drainage valve (10) is fixedly connected to one side of the outer surface of the glass box (1), and a hose (11) is fixedly connected to one side of the outer surface of the drainage valve (10).

4. A buoyancy demonstration device based on physics teaching according to claim 1, characterized in that: One side of the outer surface of the support column (4) is interactively connected to a second fixing ring (12), one side of the inner surface of the second fixing ring (12) is threadedly connected to a second bolt (13), and one side of the outer surface of the second fixing ring (12) is fixedly connected to a second support rod (14).

5. A buoyancy demonstration device based on physics teaching according to claim 4, characterized in that: A scale (15) is rotatably connected to one side of the outer surface of the second support rod (14), and a second hook (16) is fixedly connected to one side of the lower surface of the scale (15).

6. A buoyancy demonstration device based on physics teaching according to claim 5, characterized in that: One side of the outer surface of the second hook (16) is movably connected to a weight (17), and the number of the weights (17) is three.

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