A multi-purpose buoyancy experiment kit

Abstract

The utility model discloses a multipurpose buoyancy experiment kit, including work table, fixed box and measuring cylinder, the both sides of work table's top are provided with glass measuring vessel respectively, and the surface of glass measuring vessel is provided with scale line A, and fixed box sets up in the surface of work table, and the inside of fixed box is provided with L shaped block, the utility model discloses through the kit integrated liquid volume measurement: glass measuring vessel, measuring cylinder, object weighing: dynamometer, buoyancy contrast: balance etc. function can complete buoyancy size measurement, satisfy different teaching needs, through the lifting structure of L shaped block, can adjust the weighing mechanism height flexibly, through the cooperation design of balance and inverted Z shape pointer, make buoyancy contrast result through the intuitive presentation of pointer deflection, reduce student understanding difficulty, through liquid discharge through the automatic inflow of liquid outlet pipe measuring cylinder, avoid the error of manual transfer liquid, compact layout of integrated work table, reduce experimental apparatus to place time, make student more concentrate on principle inquiry.

Description

Technical Field

[0001] This utility model relates to the field of experimental teaching equipment technology, specifically a multi-purpose buoyancy experiment kit. Background Technology

[0002] The law of buoyancy is a fundamental principle of fluid statics. It states that an object immersed in a stationary fluid experiences a buoyant force equal to the weight of the fluid displaced by the object, directed vertically upwards through the centroid of the displaced fluid. This conclusion was first proposed by Archimedes, hence the name Archimedes' principle. The conclusion also applies to objects partially immersed in a liquid. The same conclusion can be extended to gases.

[0003] In existing technologies, traditional buoyancy experimental devices have limited functions, typically only capable of performing single buoyancy or volume measurements. For example, they may measure the volume of displaced liquid using a single graduated cylinder or measure the weight of an object using a spring balance. They cannot simultaneously perform operations such as liquid volume measurement, object weighing, and buoyancy comparison within the same device. Furthermore, due to the dispersed functions, different equipment needs to be frequently changed during experiments, making the operation process cumbersome and prone to errors. This makes it difficult to efficiently complete comprehensive experiments such as Archimedes principle verification and liquid density analysis, and thus fails to meet diverse teaching needs.

[0004] In light of this, we are introducing a multi-purpose buoyancy experiment kit. Utility Model Content

[0005] The purpose of this invention is to provide a multi-purpose buoyancy test kit to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-purpose buoyancy experiment kit, comprising: a workbench, a fixed box, and a measuring cylinder;

[0007] Glass measuring instruments are respectively provided on both sides of the top of the workbench, and scale line A is provided on the surface of the glass measuring instruments;

[0008] The fixing box is disposed on the surface of the workbench, and an L-shaped block is disposed inside the fixing box;

[0009] The graduated cylinder is positioned below the workbench, and the surface of the graduated cylinder is provided with scale line B;

[0010] The surface of the L-shaped block is equipped with a weighing mechanism. The balance, positioning column, inverted Z-shaped pointer, and display plate of the weighing mechanism are used in conjunction to observe the state of the balance.

[0011] Preferably, the weighing mechanism includes a slot formed on the surface of an L-shaped block, the slot and the L-shaped block being integrally formed, the balance being rotatably connected inside the slot, the positioning post being connected to the center of the top of the balance and being fixedly connected to the balance, the inverted Z-shaped pointer being connected to the top of the positioning post and being fixedly connected to the positioning post, the display plate being connected to one side of the top of the L-shaped block, the surface of the display plate being connected to a scale line C for the inverted Z-shaped pointer display, and force gauges being connected to both ends of the balance, the force gauges being bolted to the surface of the balance.

[0012] Preferably, the force gauge has a T-shaped slider inside, and a force measuring rod is connected to the bottom of the T-shaped slider. The force measuring rod and the T-shaped slider are fixedly connected. A hook is connected to the bottom of the force measuring rod. The hook is designed to facilitate the suspension of the object to be weighed, i.e., the buoyancy test kit.

[0013] Preferably, an indicator needle is connected to the side surface of the T-shaped slider, and the indicator needle is fixedly connected to the T-shaped slider. The surface of the force gauge is connected to a scale line D for observing the indicator needle, and the scale line D is integrally formed with the force gauge.

[0014] Preferably, the fixed box has an internal cavity, and the cavity and the fixed box are integrally formed. A threaded rod is connected inside the cavity, and a bearing is fitted at the bottom of the threaded rod. The bearing is embedded in the inner bottom wall of the cavity. The top of the threaded rod passes through the fixed box and is connected to a rotating disk. The rotating disk and the threaded rod are fixedly connected. Bolts can be installed on the surface of the rotating disk, and the bolts pass through the rotating disk and extend into the interior of the fixed box to fix the rotating disk and the threaded rod. The L-shaped block is screwed onto the surface of the threaded rod.

[0015] Preferably, the surface side of the L-shaped block is connected to a limiting block, and the inside of the fixing box is provided with a limiting groove for sliding the limiting block. The limiting groove and the fixing box are integrally formed. The cooperation between the limiting block and the limiting groove ensures that the movement of the L-shaped block is always in a vertical state, thus forming a limit.

[0016] Preferably, the glass measuring vessel is connected to a liquid outlet pipe on its side, and the liquid outlet pipe is located above the measuring cylinder. The liquid outlet pipe facilitates the discharge of liquid from the glass measuring vessel by a suspended object, which then discharges the liquid into the interior of the measuring cylinder through the liquid outlet pipe.

[0017] Preferably, the workbench is connected to four support legs at the bottom corners, and the bottom of the support legs is provided with anti-slip texture, which is in contact with the ground to increase friction.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] (1) This kit integrates functions such as liquid volume measurement: glass measuring instrument, measuring cylinder, object weighing: force gauge, buoyancy comparison: balance, etc., and can complete a variety of experiments such as buoyancy measurement, Archimedes principle verification, liquid density analysis, and object density calculation to meet different teaching needs.

[0020] (2) The height of the weighing mechanism can be flexibly adjusted by the lifting structure of the L-shaped block, namely the threaded rod and the limiting groove, to adapt to glass measuring instruments or experimental objects of different heights and enhance the versatility of the device.

[0021] (3) Through the combined design of the balance and the inverted Z-shaped pointer, the buoyancy comparison results are presented intuitively through pointer deflection, reducing the difficulty of students' understanding. The scale line D of the force gauge and the scale line B of the graduated cylinder provide accurate data and improve the accuracy of the experiment.

[0022] (4) The liquid is automatically discharged into the graduated cylinder through the outlet pipe, avoiding the error of manual liquid transfer; the integrated workbench has a compact layout, reducing the time spent setting up experimental equipment, and allowing students to focus more on exploring the principles. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the L-shaped block, balance, and force gauge connected in this utility model.

[0025] Figure 3 This is a schematic diagram of the force gauge of this utility model;

[0026] Figure 4 This is a side sectional view of the fixing box of this utility model.

[0027] In the diagram: 1. Support leg; 2. Worktable; 3. Glass measuring instrument; 4. Scale line A; 5. Measuring cylinder; 6. Scale line B; 7. Fixing box; 8. L-shaped block; 9. Rotating disk; 10. Limiting groove; 11. Threaded rod; 12. Balance; 13. Force gauge; 14. Liquid outlet pipe; 15. Hook; 16. Positioning pin; 17. Inverted Z-shaped pointer; 18. Display plate; 19. Scale line C; 20. Limiting block; 21. T-shaped slider; 22. Indicator needle; 23. Scale line D; 24. Force measuring rod; 25. Empty groove; 26. Cavity. Detailed Implementation

[0028] 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.

[0029] Please see Figure 1-4 This utility model provides a technical solution: a multi-purpose buoyancy test kit, including: a workbench 2, with glass measuring instruments 3 respectively provided on the top two sides of the workbench 2, the glass measuring instruments 3 can be connected by bolts, and the surface of the glass measuring instruments 3 is provided with scale lines A4;

[0030] The fixing box 7 is set on the surface of the workbench 2. The fixing box 7 is fixed to the workbench 2, or it can be connected by bolts. The fixing box 7 has an L-shaped block 8 inside.

[0031] Measuring cylinder 5 is located below the workbench 2. Measuring cylinder 5 can collect the liquid inside the glass measuring vessel 3. The surface of the measuring cylinder 5 is provided with graduation lines B6.

[0032] The surface of the L-shaped block 8 is provided with a weighing mechanism. The balance 12, positioning column 16, inverted Z-shaped pointer 17 and display plate 18 of the weighing mechanism are used in combination to make the state of the balance 12 visible.

[0033] The weighing mechanism includes a slot 25 formed on the surface of an L-shaped block 8. The slot 25 and the L-shaped block 8 are integrally formed. The balance 12 is rotatably connected inside the slot 25. The positioning post 16 is connected to the center of the top of the balance 12 and is fixedly set with the balance 12. The inverted Z-shaped pointer 17 is connected to the top of the positioning post 16 and is fixedly set with the positioning post 16. The display plate 18 is connected to one side of the top of the L-shaped block 8. The surface of the display plate 18 is connected with a scale line C19 for the inverted Z-shaped pointer 17 to display. Force gauges 13 are connected to both ends of the balance 12. The force gauges 13 can be bolted to the surface of the balance 12.

[0034] The force gauge 13 has a T-shaped slider 21 inside, and a force measuring rod 24 is connected to the bottom of the T-shaped slider 21. The force measuring rod 24 and the T-shaped slider 21 are fixedly connected. The bottom of the force measuring rod 24 is connected to a hook 15. The hook 15 is designed to facilitate the suspension of the object to be weighed, i.e., the buoyancy test kit.

[0035] The surface of the T-shaped slider 21 is connected to an indicator needle 22, which is fixedly connected to the T-shaped slider 21. The surface of the force gauge 13 is connected to a scale line D23 for observing the indicator needle 22, which is integrally formed with the force gauge 13.

[0036] The fixed box 7 has an internal cavity 26, which is integrally formed with the fixed box 7. A threaded rod 11 is connected inside the cavity 26. A bearing is fitted at the bottom of the threaded rod 11 and embedded in the inner bottom wall of the cavity 26. The top of the threaded rod 11 passes through the fixed box 7 and is connected to a rotating disk 9. The rotating disk 9 and the threaded rod 11 are fixedly connected. Bolts can be installed on the surface of the rotating disk 9 and extend through the rotating disk 9 into the interior of the fixed box 7 to fix the rotating disk 9 and the threaded rod 11. The L-shaped block 8 is screwed onto the surface of the threaded rod 11.

[0037] The L-shaped block 8 is connected to the side of the surface of the limiting block 20. The inside of the fixing box 7 is provided with a limiting groove 10 for sliding the limiting block 20. The limiting groove 10 and the fixing box 7 are integrally formed. The cooperation between the limiting block 20 and the limiting groove 10 ensures that the movement of the L-shaped block 8 is always in a vertical state, thus forming a limit.

[0038] The glass measuring vessel 3 is connected to a liquid outlet pipe 14 on its side, and the liquid outlet pipe 14 is located above the measuring cylinder 5. The liquid outlet pipe 14 facilitates the discharge of liquid from the glass measuring vessel 3 by a suspended object, and the liquid is discharged into the interior of the measuring cylinder 5 through the liquid outlet pipe 14.

[0039] The workbench 2 is connected to four support legs 1 at the bottom corners. The bottom of the support legs 1 is provided with anti-slip texture, and the anti-slip texture is in contact with the ground to increase friction.

[0040] Specifically, in use, first, pour the liquid required for the experiment (such as water) into the glass measuring vessels 3 on both sides of the top of the workbench 2. Read and control the liquid volume through the scale line A4. Rotate the rotating disk 9 to drive the threaded rod 11 in the fixed box 7 to rotate. Since the L-shaped block 8 is screwed to the threaded rod 11 and the limiting block 20 on the side of the L-shaped block 8 slides in the limiting groove 10 of the fixed box 7, the L-shaped block 8 will rise and fall vertically along the threaded rod 11. After adjusting to a suitable height, stop rotating. The cooperation between the limiting block 20 and the limiting groove 10 ensures that the movement of the L-shaped block 8 is always in a vertical state, thus forming a limit.

[0041] The balance 12 is rotatably connected to the surface of the L-shaped block 8 through the slot 25. Before the experiment, it is necessary to ensure that the balance 12 is in a horizontal state. At this time, the inverted Z-shaped pointer 17 at the top of the positioning column 16 should point to the zero mark C19 on the display plate 18 (the center position). If it is not aligned, it can be zeroed by adjusting the initial position of the force gauge 13 or calibrating the balance 12.

[0042] The object to be measured is suspended on the force measuring rod 24 at the bottom of the force measuring meter 13 via the hook 15. The object's weight causes the T-shaped slider 21 to slide down inside the force measuring meter 13. The indicator needle 22 displays the object's weight value corresponding to the scale line D23. At this time, the two ends of the balance 12 are in equilibrium, and the inverted Z-shaped pointer 17 remains at the zero scale line position.

[0043] When a suspended object is slowly immersed in the liquid in glass measuring vessel 3, the object is subjected to buoyancy, and the reading of force gauge 13 (i.e., the pulling force) decreases. According to the buoyancy formula F_buoyancy = GF_pull (where G is the weight of the object and F_pull is the reading of force gauge 13), the magnitude of the buoyancy can be calculated. At the same time, the liquid displaced by the object flows into the measuring cylinder 5 below through the liquid outlet tube 14 on the side of glass measuring vessel 3. The volume of the displaced liquid is read through the scale line B6, and Archimedes' principle can be verified by combining the liquid density.

[0044] If it is necessary to compare the buoyancy of different objects or different liquids in the experiment, the object and the weight (or another object) can be suspended by the force gauges 13 at both ends of the balance 12, and the direction of the deflection of the inverted Z-shaped pointer 17 can be observed to determine whether the forces at both ends are balanced, so as to intuitively compare the magnitude of the buoyancy.

[0045] Multi-scenario extended applications

[0046] Experiments with different liquid densities: Change the liquid in glass measuring vessel 3 (such as alcohol, salt water, etc.), repeat the above steps, and analyze the effect of liquid density on buoyancy by measuring the change in the reading of force gauge 13 and the volume of liquid displaced.

[0047] Object volume measurement: For irregular objects, the volume of the displaced liquid collected by graduated cylinder 5 can be used to directly obtain the object volume, and the object density can be calculated by combining the weighing data.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-purpose buoyancy experiment kit, characterized in that, include: Workbench (2), with glass measuring instruments (3) respectively provided on the top two sides of the workbench (2), and scale lines A (4) provided on the surface of the glass measuring instruments (3). Fixing box (7), the fixing box (7) is set on the surface of the workbench (2), and an L-shaped block (8) is set inside the fixing box (7); Measuring cylinder (5), the measuring cylinder (5) is set below the workbench (2), and the surface of the measuring cylinder (5) is provided with scale line B (6). The surface of the L-shaped block (8) is provided with a weighing mechanism, which includes a balance (12), a positioning column (16), an inverted Z-shaped pointer (17), a display plate (18), and a force gauge (13) connected to both ends of the balance (12). The balance (12) is rotatably connected to a slot (25) opened on the surface of the L-shaped block (8). The positioning column (16) is connected to the top center of the balance (12). The inverted Z-shaped pointer (17) is connected to the top of the positioning column (16). The display plate (18) is connected to one side of the top of the L-shaped block (8), and the surface of the display plate (18) is provided with a scale line C (19) for the inverted Z-shaped pointer (17) to indicate.

2. The multi-purpose buoyancy experiment kit according to claim 1, characterized in that, The force gauge (13) has a T-shaped slider (21) inside, and a force measuring rod (24) is connected to the bottom of the T-shaped slider (21). A hook (15) is connected to the bottom of the force measuring rod (24).

3. The multi-purpose buoyancy experiment kit according to claim 2, characterized in that, The surface of the T-shaped slider (21) is connected to an indicator needle (22), and the surface of the force gauge (13) is connected to a scale line D (23) for observing the indicator needle (22).

4. The multi-purpose buoyancy experiment kit according to claim 1, characterized in that, The fixed box (7) has a cavity (26) inside, and a threaded rod (11) is connected inside the cavity (26). The top of the threaded rod (11) passes through the fixed box (7) and is connected to a rotating disk (9). The L-shaped block (8) is screwed onto the surface of the threaded rod (11).

5. A multi-purpose buoyancy experiment kit according to claim 4, characterized in that, The L-shaped block (8) has a limiting block (20) connected to its surface side, and the fixed box (7) has a limiting groove (10) for sliding the limiting block (20).

6. A multi-purpose buoyancy experiment kit according to claim 1, characterized in that, The glass measuring instrument (3) is connected to a liquid outlet pipe (14) on its side, and the liquid outlet pipe (14) is located above the measuring cylinder (5).

7. A multi-purpose buoyancy experiment kit according to claim 1, characterized in that, The workbench (2) is connected to support legs (1) at the four corners of its bottom.

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