CN221573325U - Buoyancy type interesting fluid teaching demonstration device - Google Patents

Abstract

The utility model relates to the technical field of teaching aids and discloses a buoyancy type interesting fluid teaching demonstration device, which comprises a black box, a fluid mechanism and a buoyancy mechanism, wherein the fluid mechanism and the buoyancy mechanism are arranged in the black box; the black box is a rectangular box body with a hollow inside; the fluid mechanism comprises a funnel, an upper three-way pipe, a lower three-way pipe, a rubber pipe and a water tank; the buoyancy mechanism comprises an outer cylinder, an inner cylinder, an iron ball, a stay wire, a rubber plug and a support frame. The utility model can realize various teaching demonstration effects and simplify the structure through scientific structural design, has simple structure, low cost and easy manufacture, is favorable for students to recognize various mechanical principles, and excites the learning desire and the exploring spirit of the students, thereby achieving the aims of assisting teaching and being favorable for improving the learning interest and the learning score of the students.

Description

Buoyancy type interesting fluid teaching demonstration device

Technical Field

The utility model relates to the technical field of teaching aids, in particular to a buoyancy type interesting fluid teaching demonstration device for exploratory teaching.

Background

At present, along with the continuous progress of modern technology in China and the continuous expansion of school sources, the number of students to be examined is increased, so that the study pressure of students in the school is increased, most of the students are put on a computer network due to the influence of social environment, the study energy and actual operation capacity of the students are dispersed, and the overall quality of the students in the school is reduced, so that the study interest of the students is improved, the study performance of the students is comprehensively improved, the wisdom of the students is further developed, the students are placed in front of teachers, and the problem that the students commonly feel annoyance is solved.

The physical discipline has many basic principles such as theorem law, and in physical teaching, the theorem law is either too simple or abstract, and for the simple physical law, students often feel too simple and lack interest when receiving the law, or the law has certain difficulty, so that the understanding is difficult. Many laws of physics only lead in, lead out and verify through experiments, can make students understand more deeply and vividly.

The novel teaching aid can improve the learning interest of students, enrich the perceptual knowledge, help to form clear concepts and develop the observation capability and thinking capability of the students. Including basic education in middle and primary schools and conventional and professional teaching aids used in various specialized education in colleges and universities and middle schools. In general, there are real objects, and objective objects are directly presented to students so that the students can directly feel; simulation objects, including specimens, models, and other replicas, etc.

Hydrodynamic force, buoyancy interaction principle and the like are all important principles in physics, in physical teaching, a student can more vividly understand buoyancy theorem by demonstrating the physical principles by using a teaching aid, at present, when teaching the physical principles, only a few simple examples are usually lifted, and the conventional teaching aid is very inconvenient to use, high in cost and single in function. Because the teaching activities of speaking and demodulation are too simple and boring, the learning activities lack interestingness, and most students lack learning interests, especially the exploring spirit.

Disclosure of utility model

The utility model aims to provide a buoyancy interesting fluid teaching demonstration device, which realizes various teaching demonstration effects and simplifies the structure through scientific structural design, has simple structure, low cost and easy manufacture, is beneficial to the cognition of students on the buoyancy principle, and excites the learning desire and the exploration spirit of the students, thereby achieving the aims of assisting teaching and improving the learning interest and the learning score of the students.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

A buoyancy interesting fluid teaching demonstration device is characterized by comprising a black box, a fluid mechanism and a buoyancy mechanism, wherein the fluid mechanism and the buoyancy mechanism are arranged in the black box; the black box comprises a water inlet hole and a water outlet hole; the fluid mechanism comprises a funnel, an upper three-way pipe, a lower three-way pipe and a rubber pipe; the buoyancy mechanism comprises an outer cylinder, an inner cylinder, an iron ball, a stay wire, a rubber plug and a support frame; the barrel body of the outer barrel is a cylinder, the lower end of the outer barrel is in a gradually-reduced funnel shape, and the upper end and the lower end of the outer barrel are hollow barrels with openings; the cylinder body of the inner cylinder is a cylinder, the upper end and the lower end of the inner cylinder are hollow cylinders with openings, the lower end of the inner cylinder is provided with at least one opening, the inner cylinder and the outer cylinder are concentric circles, the inner cylinder is arranged in the outer cylinder, and the lower end of the inner cylinder is fixedly connected with the inner wall of the lower end of the outer cylinder; an annular supporting pad is arranged at the position 10mm away from the bottom end of the inner cylinder, the outer diameter of the annular supporting pad is equal to the inner diameter of the inner cylinder, the outer side wall of the annular supporting pad is fixedly connected with the inner wall of the inner cylinder, a cylindrical foam block capable of moving up and down is arranged above the annular supporting pad, the bottom surface of the foam block is smooth, and the lower surface of the foam block is in sealing connection with the upper surface of the annular supporting pad when in contact; the outer cylinder is directly larger than the diameter of the inner cylinder, and a first cavity is formed by the outer wall of the inner cylinder and the inner wall of the outer cylinder; the support pad and the foam block divide the inner barrel into a second cavity and a third cavity.

Further, the black box is a rectangular box body with a hollow inside, a water inlet hole is formed in the upper panel of the black box, and a water outlet hole is formed in the lower section of the side panel.

Further, the funnel is arranged outside the black box, a guide pipe of the funnel penetrates through the water inlet of the black box and is connected with the water inlet end of the upper three-way pipe arranged inside the black box, and the water outlet end of the upper three-way pipe is connected with one water inlet port of the lower three-way pipe arranged inside the black box through the rubber pipe.

Further, the box body of the black box is a rectangular box body made of opaque panels, and one side panel of the box body is hinged with other panels.

Further, the support frame is a member made of light aluminum alloy.

Furthermore, the liquid storage hopper is a funnel-shaped container with openings at the upper end and the lower end, and the opening at the upper end is wide and the opening at the lower end is narrow.

Further, one end of the supporting frame is fixedly connected with the outer cylinder, and the other end of the supporting frame is fixedly connected with the black box.

Further, the middle of the rubber plug is provided with a hole, and the rubber plug is connected with the third cavity through the rubber tube and is connected with the outside.

Further, the iron ball is fixedly connected with the center of the bottom end of the foam block through the stay wire, and when the foam block descends to the surface of the annular supporting pad, the iron ball just falls to the opening of the rubber plug and blocks the opening of the rubber plug.

Furthermore, the thickness of the annular supporting pad is 3-5mm, the surface of the annular supporting pad is smooth, and the annular supporting pad is made of aluminum or plastic.

Due to the adoption of the scheme, the buoyancy type interesting fluid teaching demonstration device provided by the utility model has the following beneficial effects:

1. The buoyancy type interesting fluid teaching demonstration device provided by the utility model can realize various teaching demonstration effects and simplify the structure through scientific structural design, has the advantages of simple structure, low cost and easiness in manufacture, is beneficial to the cognition of students on various mechanical principles, and excites the learning desire and exploration spirit of the students, thereby achieving the purposes of assisting teaching and improving the learning interest and learning score of the students.

2. The utility model has reasonable design, can realize demonstration of various physical and buoyancy principles through the combination of the parts, has simple operation, low cost, easy production and convenient installation, and is beneficial to students to learn simple physical knowledge and excite students to learn.

Drawings

Fig. 1 is a schematic diagram of an overall sectional structure of a teaching demonstration device according to an embodiment of the present utility model;

FIG. 2 is a schematic illustration of a fluid mechanism according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of a buoyancy mechanism according to an embodiment of the present utility model;

FIG. 4 is a schematic view of an inner barrel mechanism according to an embodiment of the present utility model;

FIG. 5 is a schematic view of the outer barrel mechanism according to the embodiment of the present utility model;

fig. 6 is a schematic perspective view of a supporting frame according to an embodiment of the utility model.

In the figure: 1. a black box; 2. a fluid mechanism; 3. a buoyancy mechanism; 4. an outer cylinder; 5. an inner cylinder; 51. an opening; 6. an annular support pad; 7. a foam block; 8. iron balls; 9. a pull wire; 10. a rubber plug; 11. a support frame; 12. a first cavity; 13. a second cavity; 14. a third cavity; 15. a water inlet hole; 16. a water outlet hole; 17. a funnel; 18. an upper tee; 19. a lower tee; 20. a rubber tube; 21. a beaker.

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.

Examples

Referring to fig. 1-6, the buoyancy type interesting fluid teaching demonstration device provided by the embodiment of the utility model is mainly designed according to the teaching requirement of fluid chapters, is convenient to demonstrate in a classroom, and is convenient for students to intuitively know the characteristics and features of fluid, and comprises a black box 1, a fluid mechanism 2 and a buoyancy mechanism 3 which are arranged in the box body of the black box 1; the black box 1 is a rectangular box body with a hollow interior (the black box is provided with six faces and is internally closed after being connected with each other by six panels), and the black box 1 comprises a water inlet hole 15 and a water outlet hole 16; the fluid mechanism 2 comprises a funnel 17, an upper tee 18, a lower tee 19 and a rubber tube 20; the buoyancy mechanism 3 comprises an outer cylinder 4, an inner cylinder 5, an iron ball 8, a stay wire 9, a rubber plug 10 and a supporting frame 11; the barrel body of the outer barrel 4 is a cylinder, the lower end of the outer barrel 4 is a gradually shrinking funnel-shaped, and the upper end and the lower end of the outer barrel 4 are hollow barrels with openings; the cylinder body of the inner cylinder 5 is a cylinder, the upper end and the lower end of the inner cylinder 5 are hollow cylinders with openings, at least one opening 51 is formed in the lower end of the inner cylinder 5, the inner cylinder 5 and the outer cylinder 4 are concentric circles, the inner cylinder 5 is arranged in the outer cylinder 4, and the lower end of the inner cylinder 5 is fixedly connected with the inner wall of the lower end of the outer cylinder 4; an annular supporting pad 6 is arranged at the position 10mm away from the inner wall of the bottom end of the inner cylinder 5, the outer diameter of the annular supporting pad 6 is equal to the inner diameter of the inner cylinder 5, the outer side wall of the annular supporting pad 6 is fixedly connected with the inner wall of the inner cylinder 5, a cylindrical foam block 7 capable of moving up and down is arranged above the annular supporting pad 6, the bottom surface of the foam block 7 is flat and smooth, and the lower surface of the foam block 7 is in sealing connection when in contact with the upper surface of the annular supporting pad 6; the outer cylinder 4 is directly larger than the diameter of the inner cylinder 5, and a first cavity 12 is formed by the outer wall of the inner cylinder 5 and the inner wall of the outer cylinder 4; the pad and foam block divide the inner barrel 5 into a second cavity 13 and a third cavity 14.

The black box 1 is a rectangular box body with a hollow inside, a water inlet hole 15 is formed in the upper panel of the black box 1, and a water outlet hole 16 is formed in the lower section of the side panel.

The funnel 17 is arranged outside the black box 1, a conduit of the funnel passes through the water inlet 15 of the black box 1 and is connected with the water inlet end of the upper three-way pipe 18 arranged inside the black box 1, the water outlet end of the upper three-way pipe 18 is connected with one water inlet port of the lower three-way pipe 19 arranged inside the black box 1 through the rubber pipe 20, and liquid (such as water) for demonstration is added into the funnel 17 from the beaker 21 outside and flows outside through the upper three-way pipe 18, the lower three-way pipe 19 and the rubber pipe 20 to carry out teaching demonstration.

The black box 1 is a rectangular box body made of opaque panels, and one side panel of the box body is hinged with other panels.

The supporting frame 11 is a member made of light aluminum alloy.

The funnel 17 is a funnel-shaped container with openings at the upper end and the lower end, the opening at the upper end is wide, and the opening at the lower end is narrow, and the capacity is 200-500ml.

One end of the supporting frame 11 is fixedly connected with the outer cylinder 4, and the other end of the supporting frame 11 is fixedly connected with the black box 1.

The middle of the rubber plug 10 is provided with a hole, and the rubber plug is connected with the third cavity 14 through a rubber tube 20 and is connected with the outside.

The iron ball 8 is fixedly connected with the bottom center of the foam block 7 through the stay wire 9, and when the foam block 7 descends to the surface of the annular supporting pad 6, the iron ball 8 just falls to the opening of the rubber plug 10 and blocks the opening of the rubber plug 10.

The thickness of the annular supporting pad 6 is 3-5mm, the surface of the annular supporting pad 6 is smooth, and the annular supporting pad 6 is made of aluminum or plastic.

The utility model also needs to pay attention to the following matters in the concrete manufacturing process:

1. An annular supporting pad 6 is fixed at a distance of about 1cm from the bottom of the inner cylinder, the surface of the annular supporting pad 6 is smooth, the thickness is about 3-5mm, the annular supporting pad 6 is not easy to deform, AB glue is used for fixing, sealing is tight, the foam block 7 is polished by fine sand paper to be standard, and particularly the bottom is polished flat, so that the tightness of the annular supporting pad is ensured when the foam block is contacted with the surface of the annular supporting pad 6, and water in the second cavity 13 cannot flow into the third cavity 14.

2. The iron ball 8 is fixedly connected with the bottom center of the foam block 7 through the stay wire 9, when the foam block 7 descends to the surface of the annular supporting pad 6, the iron ball 8 just falls to the opening of the rubber plug 10 and is blocked but not completely sealed, only the speed of water flowing out of the third cavity 14 is slowed down compared with the speed of water flowing out of the first cavity 12 into the third cavity 14, so that the water of the first cavity 12 can be ensured to fill the third cavity 14, the foam block 7 can be floated, the second cavity 13 is connected with the third cavity 14, the water of the second cavity 13 flows into the third cavity 14, flows into the rubber tube 20 along the opening of the rubber plug 10 and flows out.

3. At least one opening 51 is arranged at the lower end of the inner cylinder 5, and the opening 51 can quickly shoot the water in the first cavity 12 into the third cavity 14, so that the speed of flowing water cannot be blocked.

The demonstration process of the utility model is as follows: when teaching demonstration is carried out, the beaker 21 is used for the first time, water is added into the funnel 17 from the water inlet, a part of water flows into the inner cylinder 5 of the buoyancy mechanism, as the iron balls 8 at the bottom of the foam block 7 pull the foam block 7 through the pull wires 9, the foam block 7 has a certain pressure on the annular supporting pad 6, and further water is prevented from flowing into the third cavity 14 along the annular supporting pad 6, the water flowing into the inner cylinder 5 does not exceed the height of the inner cylinder wall, the water in the inner cylinder 5 does not overflow into the first cavity 12 and the third cavity 14, the water still stays in the inner cylinder 5, the other part of water directly flows out from the other rubber tube 20, the water received for the first time is the water directly flows out from the rubber tube 20, and the water flowing out from the third cavity 14 in the buoyancy mechanism is not generated, so the water received for the first time is smaller than the water poured in.

The water received for the first time is poured into the funnel 17 again for the second time, wherein a part of water directly flows to the outside from the rubber tube 20, the other part of water flows into the inner tube 5, the liquid level is gradually increased along with the increase of the water flowing into the inner tube 5, the water in the second cavity 13 overflows from the inner tube 5 quickly because the water remained for the first time in the inner tube 5, the water in the inner tube 5 flows to the third cavity 14 along the first cavity 12 in the middle of the inner tube 5 and the outer tube 4 and along the first cavity 12 through the opening 51 at the lower end of the inner tube 5, the overflowed water also increases along with the continuous increase of the poured water, when the overflowed water fills the third cavity 14, the water is contacted with the foam block 7, the foam block 7 rises upwards under the action of the buoyancy, the second cavity 13 and the third cavity 14 are connected, meanwhile, the foam block 7 pulls the iron ball 8 from the mouth 10 through the pull wire 9 at the bottom in the rising process, the water in the cavity flows out to the outside along the first cavity 14, the water flows into the outside, the water in the second cavity is poured into the second cavity 13 again, and the water is not bad in the second cavity is recovered again.

And thirdly, four times are the same as the original first and second times, the number of times is less, and the number of times is more, so that curiosity of students is caused, and the learning of simple buoyancy knowledge by the students is facilitated, and the learning desire of the students is stimulated.

The demonstration of the utility model can achieve the following auxiliary teaching effects:

(1) The peculiar demonstration effect of the teaching aid is utilized to excite the learning interest and the learning desire of students.

(2) Through experimental demonstration, students are enabled to know an effective way for solving actual problems by using learned knowledge, the knowledge is integrated into an intelligent energy generating technology, and the aim is to develop divergent thinking and innovative consciousness of the students.

(3) As a typical case of learning, a method of exploratory learning and a exploratory idea are transmitted to students.

The utility model has the following effects after demonstration and test in a small range under the secret keeping condition:

(1) The utility model covers the content of a plurality of chapters, which are used for the application of physical buoyancy of junior middle school and the like in the individual chapter demonstration experiments, and the utility model shows the novel and peculiar characteristics to students, improves the acceptance of the students to new knowledge and stimulates the students to create the desire.

(2) The utility model is used for the physical introduction lessons of junior middle school and the opening lessons of related knowledge chapters, and aims to excite learning interests and learning desire of students by utilizing the peculiar effect of teaching aids.

(3) The utility model is used in the research learning of the junior middle school comprehensive practice activity course, and is used as a typical case of the research learning, and transmits a method and a research idea of the research learning to students.

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 (10)

1. The buoyancy type interesting fluid teaching demonstration device is characterized by comprising a black box (1), a fluid mechanism (2) and a buoyancy mechanism (3), wherein the fluid mechanism (2) and the buoyancy mechanism (3) are arranged in the box body of the black box (1); the black box (1) comprises a water inlet hole (15) and a water outlet hole (16); the fluid mechanism (2) comprises a funnel (17), an upper three-way pipe (18), a lower three-way pipe (19) and a rubber pipe (20); the buoyancy mechanism (3) comprises an outer cylinder (4), an inner cylinder (5), iron balls (8), a stay wire (9), a rubber plug (10) and a supporting frame (11); the barrel body of the outer barrel (4) is a cylinder, the lower end of the outer barrel (4) is in a gradually-reduced funnel shape, and the upper end and the lower end of the outer barrel (4) are hollow barrels with openings; the cylinder body of the inner cylinder (5) is a cylinder, the upper end and the lower end of the inner cylinder (5) are hollow cylinders with openings, at least one opening (51) is formed in the lower end of the inner cylinder (5), the inner cylinder (5) and the outer cylinder (4) are concentric circles, the inner cylinder (5) is arranged in the outer cylinder (4), and the lower end of the inner cylinder (5) is fixedly connected with the inner wall of the lower end of the outer cylinder (4); an annular supporting pad (6) is arranged at the position 10mm away from the inner wall of the bottom end of the inner cylinder (5), the outer diameter of the annular supporting pad (6) is equal to the inner diameter of the inner cylinder (5), the outer side wall of the annular supporting pad (6) is fixedly connected with the inner wall of the inner cylinder (5), a cylindrical foam block (7) capable of moving up and down is arranged above the annular supporting pad (6), the bottom surface of the foam block (7) is smooth, and the lower surface of the foam block (7) is in sealing connection with the upper surface of the annular supporting pad (6) when in contact; the diameter of the outer cylinder (4) is larger than that of the inner cylinder (5), and a first cavity (12) is formed by the outer wall of the inner cylinder (5) and the inner wall of the outer cylinder (4); the support pad and the foam block divide the inner cylinder (5) into a second cavity (13) and a third cavity (14).

2. The buoyancy fun fluid teaching demonstration device according to claim 1, wherein: the black box (1) is a rectangular box body with a hollow inside, a water inlet hole (15) is formed in the upper panel of the black box (1), and a water outlet hole (16) is formed in the lower section of the side panel.

3. The buoyancy fun fluid teaching demonstration device according to claim 1, wherein: the funnel (17) is arranged outside the black box (1), a guide pipe of the funnel penetrates through the water inlet (15) of the black box (1) to be connected with the water inlet end of an upper three-way pipe (18) arranged inside the black box (1), and the water outlet end of the upper three-way pipe (18) is connected with one water inlet port of a lower three-way pipe (19) arranged inside the black box (1) through the rubber pipe (20).

4. The buoyancy fun fluid teaching demonstration device according to claim 1, wherein: the black box (1) is a rectangular box body made of opaque panels, and one side panel of the box body is hinged with other panels.

5. The buoyancy fun fluid teaching demonstration device according to claim 1, wherein: the supporting frame (11) is a member made of light aluminum alloy.

6. The buoyancy fun fluid teaching demonstration device according to claim 3, wherein: the funnel (17) is a funnel-shaped container with openings at the upper end and the lower end, and the opening at the upper end is wide and the opening at the lower end is narrow.

7. The buoyancy fun fluid teaching demonstration device according to claim 1, wherein: one end of the supporting frame (11) is fixedly connected with the outer cylinder (4), and the other end of the supporting frame (11) is fixedly connected with the black box (1).

8. The buoyancy fun fluid teaching demonstration device according to claim 3, wherein: the middle of the rubber plug (10) is provided with a hole, and the rubber plug is connected with the third cavity (14) through the rubber tube (20) and is connected with the outside.

9. The buoyancy fun fluid teaching demonstration device according to claim 1, wherein: the iron ball (8) is fixedly connected with the bottom center of the foam block (7) through the stay wire (9), and when the foam block (7) descends to the surface of the annular supporting pad (6), the iron ball (8) just falls to the opening of the rubber plug (10) and blocks the opening of the rubber plug (10).

10. The buoyancy fun fluid teaching demonstration device according to claim 1, wherein: the thickness of the annular supporting pad (6) is 3-5mm, the surface of the annular supporting pad (6) is smooth, and the annular supporting pad (6) is made of aluminum or plastic.