Science popularization demonstration device for buoyancy in water

Abstract

The utility model relates to the technical field of science popularization demonstration, and discloses a science popularization demonstration device for buoyancy in water, which comprises a water tank, the water tank is provided with an upward opening, two partition plates are fixedly mounted in the water tank, and an inner cavity of the water tank is averagely divided into three water tanks with the same size by the two partition plates. The top of the water tank is provided with an object placing plate which can be lifted up and down, the object placing plate is provided with three concave parts, the three concave parts of the object placing plate are respectively positioned in the three water tanks, the three concave parts of the object placing plate are respectively arranged in a hollow net shape, and hydraulic rods are fixedly arranged on two sides of the water tank. The three water tanks are not communicated by plugging the two sealing plugs in the through holes in the two partition plates, so that the buoyancy of articles with the same mass in different solutions can be tested; and the three water tanks are communicated by taking down the two sealing plugs, so that the buoyancy borne by objects with different masses in the same solution can be tested.

Description

Technical Field

[0001] The utility model belongs to the technical field of popular science demonstration, in particular to an underwater buoyancy popular science demonstration device. Background Art

[0002] The vertical upward force exerted on an object immersed in a fluid is called buoyancy, which is opposite to the direction of gravity. Buoyancy refers to the difference in fluid pressure on each surface of an object immersed in a fluid (liquid and gas) (the resultant force of the fluid on the object). When teaching buoyancy knowledge, in order to enable students to feel the performance of buoyancy more intuitively, a demonstration device is used. However, common demonstration devices used for buoyancy science cannot test the buoyancy of solutions of different densities on objects of the same mass at the same time, or cannot test the buoyancy of solutions of the same density on objects of different masses at the same time. If the test object sinks into the test solution, it is not convenient to take the object out. For this reason, the present application proposes an underwater buoyancy science demonstration device. Utility Model Content

[0003] In order to solve the problems raised in the above-mentioned background technology, the utility model provides the following technical solutions: an underwater buoyancy science demonstration device, including a water tank, which is arranged to open upward, and two partitions are fixedly installed inside the water tank, and the two partitions evenly divide the inner cavity of the water tank into three water tanks of the same size, and a storage plate that can be lifted up and down is arranged on the top of the water tank, and the storage plate is provided with three recessed parts, and the three recessed parts of the storage plate are respectively located in the three water tanks, and the three recessed parts of the storage plate are all arranged in a hollow mesh shape, and hydraulic rods are fixedly installed on both sides of the water tank, and the telescopic ends of the two hydraulic rods are respectively connected to the bottom of the two ends of the storage plate, and the bottoms of the two partition sides are opened with through holes, and sealing plugs are threadedly inserted in the two through holes.

[0004] Furthermore, slots are provided on the top of the water tank and on both sides of the three water tanks, and brackets are movably inserted into the two corresponding slots. A spring force gauge is fixedly installed at the bottom end of the horizontal portion of the bracket, and the spring force gauge is located directly above one of the water tanks.

[0005] Furthermore, screw holes are provided at both ends of the top of the storage plate, and bolts threadedly connected to the telescopic ends of the two hydraulic rods are threadedly inserted into the two screw holes.

[0006] Furthermore, the maximum extension of the hydraulic rod is greater than the depth of the recessed portion on the storage plate.

[0007] Furthermore, the water tank and the two partitions are made of transparent glass.

[0008] Furthermore, the size of the bottom end of the vertical portion of the bracket matches the size of the slot.

[0009] Furthermore, when the bottoms of both ends of the placement plate are in contact with the top of the water tank, the bottom of the recessed portion of the placement plate is lower than the liquid level of the solution in the water tank.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] By blocking the openings on the two partitions with two sealing plugs, the three water tanks are disconnected, so that the buoyancy of objects of the same mass in different solutions can be tested; by connecting the three water tanks by removing the two sealing plugs, the buoyancy of objects of different masses in the same solution can be tested, and the objects sunk in the solution can be taken out by pushing the placement plate up with a hydraulic rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] 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:

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the water tank, partition and storage plate of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the water tank and the partition of the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the storage plate of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the bracket and the spring force measuring device of the utility model;

[0018] In the figure: 1. water tank; 2. partition; 3. opening; 4. sealing plug; 5. storage plate; 6. hydraulic rod; 7. bolt; 8. slot; 9. bracket; 10. spring dynamometer. DETAILED DESCRIPTION

[0019] 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.

[0020] Depend on Figure 1-5The utility model includes a water tank 1, which is arranged to open upward, and has two partitions 2 fixedly installed inside the water tank 1, the two partitions 2 evenly divide the inner cavity of the water tank 1 into three water tanks of the same size, and a storage plate 5 that can be lifted up and down is arranged on the top of the water tank 1, the storage plate 5 is provided with three recessed parts, and the three recessed parts of the storage plate 5 are respectively located in the three water tanks, and the three recessed parts of the storage plate 5 are arranged in a hollow mesh shape, and hydraulic rods 6 are fixedly installed on both sides of the water tank 1, and the telescopic ends of the two hydraulic rods 6 are respectively connected to the bottom of the two ends of the storage plate 5, and the bottom of the sides of the two partitions 2 are provided with through holes 3, and sealing plugs 4 are threadedly inserted in the two through holes 3.

[0021] At the same time, slots 8 are provided at the top of the water tank 1 and on both sides of the three water tanks. Brackets 9 are movably inserted into the two corresponding slots 8. A spring force gauge 10 is fixedly installed at the bottom end of the horizontal portion of the bracket 9. The spring force gauge 10 is located directly above one of the water tanks.

[0022] In addition, screw holes are provided at both ends of the top of the storage plate 5 , and bolts 7 threadedly connected to the telescopic ends of the two hydraulic rods 6 are threadedly inserted into the two screw holes.

[0023] Furthermore, the maximum extension of the hydraulic rod 6 is greater than the depth of the recessed portion on the storage plate 5 .

[0024] Furthermore, the water tank 1 and the two partitions 2 are all made of transparent glass.

[0025] In addition, the size of the bottom end of the vertical portion of the bracket 9 is matched with the size of the slot 8 .

[0026] It should also be noted that when the bottoms of both ends of the placement plate 5 are in contact with the top of the water tank 1 , the bottom of the recessed portion of the placement plate 5 is lower than the liquid level of the solution in the water tank 1 .

[0027] 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", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device 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, article or device.

[0028] 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. An underwater buoyancy science demonstration device, comprising a water tank (1), characterized in that: The water tank (1) is arranged to be opened upwards, and two partitions (2) are fixedly installed inside the water tank (1), and the two partitions (2) evenly divide the inner cavity of the water tank (1) into three water tanks of the same size. A lifting and lowering storage plate (5) is arranged on the top of the water tank (1), and the storage plate (5) is provided with three recessed parts, and the three recessed parts of the storage plate (5) are respectively located in the three water tanks, and the three recessed parts of the storage plate (5) are arranged in a hollow mesh shape. Hydraulic rods (6) are fixedly installed on both sides of the water tank (1), and the telescopic ends of the two hydraulic rods (6) are respectively connected to the bottom of the two ends of the storage plate (5), and the bottoms of the two side surfaces of the two partitions (2) are provided with through openings (3), and sealing plugs (4) are threadedly inserted in the two through openings (3).

2. The underwater buoyancy science demonstration device according to claim 1, characterized in that: Slots (8) are provided on the top of the water tank (1) and on both sides of the three water tanks. Brackets (9) are movably inserted into two corresponding slots (8). A spring force gauge (10) is fixedly installed at the bottom end of the horizontal portion of the bracket (9). The spring force gauge (10) is located directly above one of the water tanks.

3. The underwater buoyancy science demonstration device according to claim 1, characterized in that: Screw holes are provided at both ends of the top of the storage plate (5), and bolts (7) threadedly connected to the telescopic ends of the two hydraulic rods (6) are threadedly inserted into the two screw holes.

4. The underwater buoyancy science demonstration device according to claim 1, characterized in that: The maximum extension of the hydraulic rod (6) is greater than the depth of the recessed portion on the storage plate (5).

5. The underwater buoyancy science demonstration device according to claim 1, characterized in that: The water tank (1) and the two partitions (2) are both made of transparent glass.

6. The underwater buoyancy science demonstration device according to claim 2, characterized in that: The size of the bottom end of the vertical portion of the bracket (9) is compatible with the size of the slot (8).

7. The underwater buoyancy science demonstration device according to claim 1, characterized in that: When the bottoms of both ends of the placement plate (5) are in contact with the top of the water tank (1), the bottom of the recessed portion of the placement plate (5) is lower than the liquid level of the solution inside the water tank (1).

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