CN221101551U

CN221101551U - Buoyancy demonstration device

Info

Publication number: CN221101551U
Application number: CN202322582279.6U
Authority: CN
Inventors: 余志德
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-09-22
Filing date: 2023-09-22
Publication date: 2024-06-07
Anticipated expiration: 2033-09-22

Abstract

The utility model discloses a buoyancy demonstration device, which comprises: the bottom plate, the top fixedly connected with three graduated flask and dead lever of bottom plate, the inside sliding connection of dead lever has the slider. When the utility model is used, different liquids can be loaded into the three measuring cylinders, then the sliding blocks are pushed to move left and right in the fixing rods, the adjusting floating balls are respectively arranged in the three measuring cylinders, reading of the spring balance is observed and recorded, further more visual experiments are carried out, understanding is facilitated, the learning effect is good, the easy-to-accept effect is achieved, meanwhile, air enters the adjusting floating balls by pressing the pressurizing bag, the balancing weight synchronous piston is lifted in the adjusting floating balls, so that the volume and the buoyancy of the adjusting floating balls are increased, the numerical value on the spring balance is recorded again, experiments with the same weight and different volumes of unified liquid are completed, the experimental mode is more flexible and changeable, and the benefit of convenient control and adjustment is achieved.

Description

Buoyancy demonstration device

Technical Field

The utility model relates to the technical field of buoyancy demonstration, in particular to a buoyancy demonstration device.

Background

The primary school science teaches a section of buoyancy, an object immersed in the liquid can be subjected to gravity and buoyancy in different liquids, and when the buoyancy is greater than the gravity, the object floats on the surface of the liquid; when the buoyancy force is equal to the gravity force, the object is suspended in the liquid; when the buoyancy is smaller than the gravity, the object sinks in the liquid, and the principle of buoyancy generation is not understood and is not suitable for students to accept by adopting the teaching method, so that the learning effect is affected.

The buoyancy demonstration device comprises a main box body (11), wherein the main box body (11) is divided into a first box body (1), a second box body (2) and a third box body (3) through partition plates, a frame body (4) is arranged at the upper part of the main box body (11), three spring scales (5) are respectively hung on the upper parts of the first box body (1), the second box body (2) and the third box body (3), a connecting reed (6) is respectively installed at the bottom of each spring scale (5) through a first traction rope (12), a second traction rope (10) which also serves as an air channel is buckled on each connecting reed (6), each second traction rope (10) is respectively communicated with a floating ball (8) with a cavity through a counterweight (7), and an electric drainage pump (9) which is respectively communicated with the cavity of the floating ball (8) is arranged at the bottom of each floating ball (8); by adopting the structure, the buoyancy demonstration device has the advantages of simple structure, direct observation, convenient understanding, good learning effect and easy acceptance, but the buoyancy demonstration device has the advantages that the structure is simple, the buoyancy and the volume of a bearing object can not be changed, and the limitation of experiments is affected, so that a new buoyancy demonstration device is needed to be provided to solve the technical problems.

Disclosure of utility model

The utility model aims to provide a buoyancy demonstration device which has the advantage of being convenient to control and adjust and solves the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a buoyancy demonstration device comprising: the bottom plate, the top fixedly connected with three graduated flask and dead lever of bottom plate, the inside sliding connection of dead lever has the slider, the bottom fixedly connected with spring balance of slider, the bottom fixedly connected with couple of spring balance, the bottom of couple is hung and is equipped with the regulation floater; the adjusting component comprises an air pipe, the air pipe is fixedly connected to the outside of the adjusting floating ball, the end part of the air pipe is fixedly connected with a pressurizing bag and is clamped at the top of the fixing rod, when the adjusting component is used, different liquids can be loaded into the three measuring cylinders, then the sliding block is pushed to move left and right in the fixing rod, the adjusting floating ball is respectively arranged in the three measuring cylinders, reading of the spring balance is observed, further more visual experiments are conducted, the learning effect is good and easy to accept, meanwhile, the pressurizing bag is pressed, air enters the inside of the adjusting floating ball, the balancing weight synchronous piston is lifted in the inside of the adjusting floating ball, the volume and the buoyancy of the adjusting floating ball are increased, numerical values on the spring balance are recorded again, experiments of unified liquid with same weight and different volumes are completed, and the experimental mode method is more flexible and changeable.

Preferably, the inside sliding connection of adjusting the floater has the piston, the bottom fixedly connected with balancing weight of piston, the balancing weight can be synchronous piston at the inside upper and lower slip of adjusting the floater.

Preferably, the inside of dead lever has seted up the spout, slider sliding connection is in the inside of spout, slider and spout combination can make and adjust the floater and can horizontal displacement to experiment in different liquid inside.

Preferably, the outside of three the graduated flask all is provided with the scale strip, the scale strip belongs to laser scale, the scale strip is convenient for experimenter's record and observes.

Preferably, the outside fixedly connected with relief valve of pressurization bag, the bottom fixedly connected with of bottom plate four foundation columns, four the foundation column can be with whole device steady rest.

Preferably, three groups of grooves are formed in the sliding groove, two convex buttons are connected to the sliding block in a sliding mode, the convex buttons can be completely clamped into the grooves, and the sliding block after displacement can be further limited.

Preferably, two slotted holes are formed in the sliding block, return springs are fixedly connected to the inner portions of the two slotted holes, the end portions of the return springs are fixedly connected with the convex buttons, and the return springs can enable the convex buttons to repeatedly slide along the inner portions of the slotted holes.

Compared with the prior art, the utility model has the following beneficial effects: when the device is used, different liquids can be loaded into the three measuring cylinders, then the sliding blocks are pushed to move left and right in the fixing rods, the adjusting floating balls are respectively arranged in the three measuring cylinders, reading of the spring balance is observed and recorded, further more visual experiments are conducted, understanding of convenience is brought to understanding, the learning effect is good, the air enters the adjusting floating balls by pressing the pressurizing bag, the balancing weights synchronously lift the adjusting floating balls, the volume and the buoyancy of the adjusting floating balls are increased, the numerical values on the spring balance are recorded again, experiments with the same weight and different volumes of unified liquid are completed, and the experimental mode method is more flexible and changeable, so that the control and adjustment are convenient.

Drawings

FIG. 1 is a schematic diagram of a buoyancy demonstration device according to the present utility model;

FIG. 2 is a schematic diagram of the internal structure of a buoyancy demonstration device according to the present utility model;

FIG. 3 is a schematic view of the internal structure of the adjusting floating ball according to the present utility model;

fig. 4 is an enlarged internal structure of fig. 3a according to the present utility model.

In the figure: 1. a bottom plate; 2. a fixed rod; 3. a measuring cylinder; 4. a scale bar; 5. a bottom post; 6. a pressurizing bag; 7. an air pipe; 8. adjusting the floating ball; 9. a chute; 10. a slide block; 11. a spring balance; 12. a groove; 13. a hook; 14. a pressure release valve; 15. a piston; 16. balancing weight; 17. a slot hole; 18. a return spring; 19. a knob.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 4, the present utility model provides a technical solution: a buoyancy demonstration device comprising: the bottom plate 1, the top fixedly connected with three graduated flask 3 and dead lever 2 of bottom plate 1, the inside sliding connection of dead lever 2 has slider 10, the bottom fixedly connected with spring balance 11 of slider 10, the bottom fixedly connected with couple 13 of spring balance 11, the bottom of couple 13 hangs and is equipped with regulation floater 8; the adjusting component comprises an air pipe 7, the air pipe 7 is fixedly connected to the outside of an adjusting floating ball 8, the end part of the air pipe 7 is fixedly connected with a pressurizing bag 6 and is clamped at the top of a fixed rod 2, when the adjusting component is used, different liquids can be loaded into the three measuring cylinders 3, then a sliding block 10 is pushed to move left and right in the fixed rod 2, the adjusting floating ball 8 is respectively placed in the three measuring cylinders 3, reading of a spring balance 11 is observed, further more visual experiments are carried out, understanding is facilitated, learning effect is good and easy to accept, meanwhile, air enters the inside of the adjusting floating ball 8 by pressing the pressurizing bag 6, a balancing weight 16 is synchronously lifted in the inside of the adjusting floating ball 8, accordingly, the volume and buoyancy of the adjusting floating ball 8 are increased, numerical values on the spring balance 11 are recorded again, experiments of the same weight and different volumes of unified liquid are completed, and the experimental mode method is more flexible and changeable.

Further, a piston 15 is slidably connected to the inside of the adjusting floating ball 8, a balancing weight 16 is fixedly connected to the bottom of the piston 15, and the balancing weight 16 can slide up and down in the adjusting floating ball 8 in synchronization with the piston 15.

Further, the inside of dead lever 2 has seted up spout 9, slider 10 sliding connection is in the inside of spout 9, slider 10 and spout 9 combination can make the regulation floater 8 can horizontal displacement to carry out the experiment in different liquid inside.

Further, the three measuring cylinders 3 are provided with scale bars 4 outside, the scale bars 4 belong to laser scales, and the scale bars 4 are convenient for experimenters to record and observe.

Further, the pressure release valve 14 is fixedly connected to the outside of the pressure bag 6, four bottom posts 5 are fixedly connected to the bottom of the bottom plate 1, and the four bottom posts 5 can stably support the whole device.

Further, three groups of grooves 12 are formed in the sliding groove 9, two buttons 19 are slidably connected in the sliding block 10, the buttons 19 can be integrally clamped into the grooves 12, and the sliding block 10 after displacement can be further limited.

Further, two slots 17 are formed in the slider 10, return springs 18 are fixedly connected to the two slots 17, the ends of the return springs 18 are fixedly connected to the buttons 19, and the return springs 18 can enable the buttons 19 to repeatedly slide along the slots 17.

Working principle: when the buoyancy demonstration device is used, different liquids can be loaded into the three measuring cylinders 3, then the sliding block 10 is pushed to move left and right in the fixing rod 2, the adjusting floating balls 8 are respectively arranged in the three measuring cylinders 3, reading of the spring balance 11 is observed and recorded, further more visual experiments are carried out, understanding is facilitated, learning effects are good and easy to accept, meanwhile, air enters the adjusting floating balls 8 by pressing the pressurizing bag 6, the balancing weights 16 synchronize the piston 15 to lift in the adjusting floating balls 8, accordingly the volume and buoyancy of the adjusting floating balls 8 are increased, numerical values on the spring balance 11 are recorded again, experiments of uniform liquid with same weight and different volumes are completed, and experimental methods are more flexible and changeable.

The standard components used in the present embodiment may be purchased directly from the market, but the nonstandard structural components according to the descriptions of the specification and the drawings may also be obtained by unambiguous processing according to the conventional technical knowledge, and meanwhile, the connection manner of each component adopts the conventional means mature in the prior art, and the machinery, the components and the equipment all adopt the conventional types in the prior art, so that the specific description will not be made here.

Although embodiments of the present utility model 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 therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A buoyancy demonstration device, comprising:

The automatic weighing device comprises a bottom plate (1), wherein three measuring cylinders (3) and a fixed rod (2) are fixedly connected to the top of the bottom plate (1), a sliding block (10) is slidably connected to the inside of the fixed rod (2), a spring scale (11) is fixedly connected to the bottom of the sliding block (10), a hook (13) is fixedly connected to the bottom of the spring scale (11), and an adjusting floating ball (8) is hung at the bottom of the hook (13);

The adjusting assembly comprises an air pipe (7), the air pipe (7) is fixedly connected to the outside of the adjusting floating ball (8), and the end part of the air pipe (7) is fixedly connected with a pressurizing bag (6) and is clamped at the top of the fixing rod (2).

2. The buoyancy demonstration device according to claim 1 wherein: the inside sliding connection of regulation floater (8) has piston (15), the bottom fixedly connected with balancing weight (16) of piston (15).

3. The buoyancy demonstration device according to claim 1 wherein: the inside of dead lever (2) has seted up spout (9), slider (10) sliding connection is in the inside of spout (9).

4. The buoyancy demonstration device according to claim 1 wherein: the three measuring cylinders (3) are provided with scale strips (4) outside, and the scale strips (4) belong to laser scales.

5. The buoyancy demonstration device according to claim 1 wherein: the outside fixedly connected with relief valve (14) of pressurization bag (6), the bottom of bottom plate (1) is fixedly connected with four foundation column (5).

6. A buoyancy demonstration device according to claim 3 wherein: three groups of grooves (12) are formed in the sliding groove (9), and two protruding buttons (19) are connected in the sliding block (10) in a sliding mode.

7. The buoyancy demonstration device according to claim 1 wherein: two slotted holes (17) are formed in the sliding block (10), and reset springs (18) are fixedly connected to the inner parts of the two slotted holes (17).