Buoyancy demonstration equipment for physical experiment

Abstract

The buoyancy demonstration equipment comprises an equipment base, a concave platform is arranged in the equipment base, two groups of liquid storage tanks are arranged in the concave platform, openings are formed in the upper ends of the liquid storage tanks, a supporting frame is arranged on the equipment base, the supporting frame is of a C-shaped structure, guide sliding grooves are formed in the opposite side walls in the supporting frame, and the guide sliding grooves are communicated with the concave platform. A lifting adjusting plate is slidably arranged in a guide sliding groove of the supporting frame, a buoyancy testing assembly is arranged at the bottom of the lifting adjusting plate, an adjusting screw is rotatably arranged on the concave table, the upper end of the adjusting screw is rotatably arranged at the bottom of the supporting frame, and an adjusting knob is rotatably arranged at the top of the supporting frame. The utility model relates to the technical field of teaching aids, and particularly provides buoyancy demonstration equipment for a physical experiment.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching aids, in particular to buoyancy demonstration equipment for physical experiments. Background Art

[0002] Buoyancy is the upward force exerted by a fluid on an object immersed in it. The buoyancy demonstration experiment is an important experiment in physics teaching. It is usually performed by fixing a heavy object on a spring scale and immersing it in the liquid. The magnitude of the buoyancy is reflected by the change in the value of the spring scale.

[0003] The existing buoyancy demonstration method is relatively simple. The size of the buoyancy is related to the fluid density and the size of the object. The object volume used in the existing demonstration equipment is mostly fixed, and the liquid density cannot be adjusted, so the demonstration effect is not intuitive enough. Utility Model Content

[0004] The utility model aims to solve the technical problem that the buoyancy demonstration method is relatively simple, the volume of the demonstration object is fixed, and the fluid density cannot be adjusted.

[0005] The utility model provides the following technical solutions: the utility model proposes a buoyancy demonstration device for physical experiments, including a device base, a recessed platform is provided in the device base, two groups of liquid storage tanks are provided in the recessed platform, the upper ends of the liquid storage tanks are open, a support frame is provided on the device base, the support frame is a C-shaped structure, guide grooves are provided on the opposite side walls of the support frame, a lifting adjustment plate is slidably provided in the guide grooves of the support frame, a buoyancy test assembly is provided at the bottom of the lifting adjustment plate, an adjusting screw is rotatably provided on the recessed platform, the upper end of the adjusting screw is rotatably provided at the bottom of the support frame, an adjusting knob is rotatably provided on the top of the support frame, the adjusting knob is connected to the adjusting screw, and the adjusting screw is connected to the lifting adjustment plate through a thread.

[0006] Furthermore, the buoyancy test assembly includes a spring scale, an inflatable ball and a counterweight. The spring scale is arranged at the bottom of the lifting adjustment plate and corresponds to the liquid storage tank. The upper end of the inflatable ball is connected to the weighing end of the spring scale, and the counterweight is connected to the bottom of the inflatable ball by a rope.

[0007] Furthermore, the liquid storage tank is a transparent organic glass liquid storage tank, and a liquid level mark is provided on the front wall of the liquid storage tank.

[0008] Furthermore, a stirring rod is rotatably provided in the liquid storage tank, a stirring blade is provided on the stirring rod, a stirring knob is provided at the bottom of the equipment base, the stirring knob is connected to the stirring rod, and a spoiler hole is also provided on the stirring blade.

[0009] Furthermore, the two groups of liquid storage tanks are connected via a liquid pipe, and a valve is provided on the liquid pipe.

[0010] Furthermore, a drain pipe is provided at the bottom of the equipment base, and the drain pipe is connected to the inside of the liquid storage tank.

[0011] Furthermore, a handle is hingedly provided on the top of the support frame.

[0012] The utility model provides a buoyancy demonstration device for physical experiments, and the beneficial effects achieved by adopting the above structure are as follows:

[0013] (1) The lifting and adjusting plate is driven downward by adjusting the screw rod, and the value of the spring balance changes due to the buoyancy of the liquid on the inflatable ball and the counterweight. By continuously inflating the inflatable ball, its volume gradually increases, thereby dynamically observing the value change of the spring balance;

[0014] (2) Salt can be added to the liquid by cooperating with the stirring rod and stirring blades to fully mix and stir the liquid to increase the density, so as to observe the change in the value of the spring balance; the two groups of liquid storage tanks can be used for comparative cross-tests, and the volume of the experimental object and the liquid density can be changed respectively for dynamic observation. The demonstration is intuitive and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 The overall structure of a buoyancy demonstration device for physical experiments proposed by the utility model is shown in FIG. Figure 1 ;

[0017] Figure 2 The overall structure of a buoyancy demonstration device for physical experiments proposed by the utility model is shown in FIG. Figure 2 ;

[0018] Figure 3 A schematic diagram of the cross-sectional structure of a buoyancy demonstration device for physical experiments proposed by the utility model Figure 1 ;

[0019] Figure 4 A schematic diagram of the cross-sectional structure of a buoyancy demonstration device for physical experiments proposed by the utility model Figure 2 .

[0020] Among them, 1. Equipment base, 2. Concave table, 3. Liquid storage tank, 4. Support frame, 5. Guide slide, 6. Lifting adjustment plate, 7. Adjusting screw, 8. Adjusting knob, 9. Spring scale, 10. Inflatable ball, 11. Counterweight, 12. Liquid level mark, 13. Stirring rod, 14. Stirring blade, 15. Stirring knob, 16. Turbulator hole, 17. Liquid pipe, 18. Valve, 19. Drain pipe, 20. Handle. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0023] like Figures 1 to 4 As shown, the technical solution adopted by the utility model is as follows: a buoyancy demonstration device for physical experiments, including a device base 1, a recessed platform 2 is provided in the device base 1, two groups of liquid storage tanks 3 are provided in the recessed platform 2, the upper end of the liquid storage tank 3 is open, a support frame 4 is provided on the device base 1, the support frame 4 is a C-shaped structure, the opposite side walls of the support frame 4 are provided with guide grooves 5, a lifting adjustment plate 6 is slidably provided in the guide groove 5 of the support frame 4, a buoyancy test assembly is provided at the bottom of the lifting adjustment plate 6, an adjusting screw 7 is rotatably provided on the recessed platform 2, the upper end of the adjusting screw 7 is rotatably provided at the bottom of the support frame 4, and an adjusting knob 8 is rotatably provided on the top of the support frame 4, and the adjusting knob 8 and the adjusting knob 8 are rotatably provided. The adjusting screw 7 is connected, and the adjusting screw 7 is connected to the lifting adjustment plate 6 by a thread; the liquid storage tank 3 is a transparent organic glass liquid storage tank 3, and the front wall of the liquid storage tank 3 is provided with a liquid level mark 12; a stirring rod 13 is rotatably provided in the liquid storage tank 3, and a stirring blade 14 is provided on the stirring rod 13, and a stirring knob 15 is provided at the bottom of the equipment base 1, and the stirring knob 15 is connected to the stirring rod 13, and a turbulent hole 16 is also provided on the stirring blade 14; the two groups of liquid storage tanks 3 are connected through a liquid pipe 17, and a valve 18 is provided on the liquid pipe 17; a drain pipe 19 is provided at the bottom of the equipment base 1, and the drain pipe 19 is connected to the inside of the liquid storage tank 3; a handle 20 is also hinged on the top of the support frame 4.

[0024] like Figure 2 and Figure 3 As shown, the buoyancy test assembly includes a spring scale 9, an inflatable ball 10 and a counterweight 11. The spring scale 9 is arranged at the bottom of the lifting adjustment plate 6 and corresponds to the liquid storage tank 3. The upper end of the inflatable ball 10 is connected to the weighing end of the spring scale 9, and the counterweight 11 is connected to the bottom of the inflatable ball 10 through a rope.

[0025] During specific use, the equipment base 1 is placed stably, and the test liquid is added to the liquid storage tank 3. Then, by turning the adjusting knob 8, the adjusting knob 8 drives the adjusting screw 7 to rotate, and then drives the lifting adjustment plate 6 to move downward, so that the counterweight block 11 and the inflatable ball 10 enter the liquid, so that the value of the spring scale 9 changes, and then by injecting gas into the inflatable ball 10, the volume of the inflatable ball 10 gradually increases, thereby slowly increasing the buoyancy. At the same time, edible salt can be added to the liquid storage tank 3, and then the stirring knob 15 is turned to drive the stirring rod 13 and the stirring blade 14 to rotate, thereby accelerating the dissolution of the edible salt, so that the solution concentration gradually increases, thereby changing the value of the spring scale 9. The different solution concentrations in the two groups of liquid storage tanks 3 can demonstrate the buoyancy effects of solutions of different concentrations.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, material or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, material or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A buoyancy demonstration device for physical experiments, comprising a device base, characterized in that: A recessed platform is provided in the base of the equipment, and two groups of liquid storage tanks are provided in the recessed platform. The upper ends of the liquid storage tanks are open. A support frame is provided on the base of the equipment, and the support frame is a C-shaped structure. The opposite side walls of the support frame are provided with guide grooves, and a lifting adjustment plate is slidably provided in the guide grooves of the support frame. A buoyancy test assembly is provided at the bottom of the lifting adjustment plate. An adjusting screw is rotatably provided on the recessed platform, and the upper end of the adjusting screw is rotatably provided at the bottom of the support frame. An adjusting knob is rotatably provided on the top of the support frame, and the adjusting knob is connected to the adjusting screw, and the adjusting screw is connected to the lifting adjustment plate through a thread.

2. A buoyancy demonstration device for physical experiments according to claim 1, characterized in that: The buoyancy test assembly includes a spring balance, an inflatable ball and a counterweight. The spring balance is arranged at the bottom of the lifting adjustment plate and corresponds to the liquid storage tank. The upper end of the inflatable ball is connected to the weighing end of the spring balance, and the counterweight is connected to the bottom of the inflatable ball through a rope.

3. A buoyancy demonstration device for physical experiments according to claim 2, characterized in that: The liquid storage tank is a transparent organic glass liquid storage tank, and a liquid level mark is arranged on the front wall of the liquid storage tank.

4. A buoyancy demonstration device for physical experiments according to claim 3, characterized in that: A stirring rod is rotatably arranged in the liquid storage tank, and a stirring blade is arranged on the stirring rod. A stirring knob is arranged at the bottom of the equipment base, and the stirring knob is connected to the stirring rod. A flow disturbance hole is also arranged on the stirring blade.

5. A buoyancy demonstration device for physical experiments according to claim 4, characterized in that: The two groups of liquid storage tanks are connected through a liquid pipe, and a valve is provided on the liquid pipe.

6. A buoyancy demonstration device for physical experiments according to claim 5, characterized in that: A liquid drain pipe is provided at the bottom of the equipment base, and the liquid drain pipe is communicated with the interior of the liquid storage tank.

7. A buoyancy demonstration device for physical experiments according to claim 6, characterized in that: A handle is also hingedly provided on the top of the support frame.

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