Novel multifunctional experimental device for physics teaching

Abstract

The utility model provides a novel multifunctional experimental device for physics teaching, and belongs to the technical field of physics teaching experiments. Comprising a bottom plate and an adjusting mechanism, a threaded column is installed on the upper surface of the bottom plate, the adjusting mechanism comprises a circular plate, the circular plate is installed on the threaded column, a movable adjusting plate is installed below the circular plate, holes with different hole diameters are formed in the upper surface of the adjusting plate, and a connecting plate is stably installed on the threaded column. A movable adjusting plate is arranged outside a threaded column, a plurality of holes with different hole diameters are formed in the adjusting plate, a connecting plate is installed below the adjusting plate, a hollow cylinder is installed in the connecting plate, flames generated by an alcohol lamp penetrate through the interior of the hollow cylinder, the flames are changed to correspond to the holes with the different hole diameters, and therefore the flames can be changed into the hollow cylinder. The heating area of the flame to the object can be changed, so that students can conveniently research the experiment of the heating rate of the object under different heating areas, and the operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of physics teaching experiments, in particular to a novel multifunctional experimental device for physics teaching. Background Art

[0002] In physics teaching, it is necessary to combine teaching with experiments. In order to help students better understand and master knowledge, students will be allowed to do the operations themselves. When studying the relationship between the heating area and the object's heating rate, heat transfer and other physical phenomena, it is necessary to use test tubes, alcohol lamps and other items. The heated object is placed inside the test tube and heated by the alcohol lamp. According to the heating time, the heat transfer rate is studied.

[0003] Since the alcohol lamp is directly ignited when in use, it is necessary to change the heating area of ​​the object in the process of studying the heat transfer rate. However, there is currently no good method to control the size of the flame. The general way to control the size of the flame is to control the length of the wick. Since the heating area needs to be changed in actual operation, simply changing the length of the wick is very slow to meet the actual use needs and cannot meet the experimental operation requirements. Therefore, a new multifunctional experimental device for physics teaching is proposed to solve the above problem. Utility Model Content

[0004] In order to make up for the above deficiencies, the present invention provides a novel multifunctional experimental device for physics teaching that overcomes the above technical problems or at least partially solves the above problems.

[0005] The utility model is achieved in this way:

[0006] The utility model provides a novel multifunctional experimental device for physics teaching, comprising a bottom plate, and threaded columns are installed on the surface of the bottom plate;

[0007] An adjusting mechanism, the adjusting mechanism comprising:

[0008] A circular plate, the circular plate being mounted on the threaded column, a movable adjustment plate being mounted below the circular plate, and holes of varying diameters being opened on the upper surface of the adjustment plate;

[0009] A connecting plate, the connecting plate being stably mounted on the threaded column, and a hollow cylinder being mounted inside the connecting plate;

[0010] A sliding groove is provided on the upper surface of the adjusting plate, a moving block is provided inside the sliding groove, a connecting rod is installed on the upper surface of the moving block, and one end of the connecting rod is stably installed on the bottom of the circular plate for stable movement of the adjusting plate.

[0011] In a preferred scheme, the top of the threaded column is fixedly installed with a limiting block, and the outside of the threaded column is slidably installed with a rectangular plate, and the two ends of the rectangular plate are respectively and stably installed with a placing plate and a mounting plate.

[0012] In a preferred scheme, the upper surface of the placing plate is provided with a plurality of through holes and is uniformly arranged on the upper surface of the placing plate, and is used for solid placing heating.

[0013] In a preferred scheme, the upper surface of the mounting plate is provided with a circular hole, and an arc-shaped hole is arranged on the inner wall of the circular hole, the inner wall of the arc-shaped hole is fixedly installed with a spring, one end of the spring is fixedly connected with an arc-shaped block, and the arc-shaped block is arranged to slide in the arc-shaped hole.

[0014] In a preferred scheme, the threaded column is provided with a height adjusting mechanism, and the height adjusting mechanism comprises a first rotating nut and a second rotating nut.

[0015] In a preferred scheme, the first rotating nut and the second rotating nut are respectively and threadedly connected to the outside of the threaded column, the first rotating nut is arranged above the rectangular plate, and the second rotating nut is arranged below the rectangular plate.

[0016] In a preferred scheme, the bottom of the rectangular plate is fixedly installed with a hard brush, and is used for cleaning the outer surface of the threaded column.

[0017] In a preferred scheme, the upper surface of the bottom plate is provided with a pad, and the upper surface of the pad is provided with an alcohol lamp.

[0018] The novel multifunctional experimental device for physical teaching has the following beneficial effects.

[0019] 1. The movable adjusting plate is arranged on the outside of the threaded column, a plurality of holes with different diameters are arranged on the adjusting plate, a connecting plate is arranged below the adjusting plate, a hollow cylinder is arranged in the connecting plate, the flame generated by the alcohol lamp passes through the inside of the hollow cylinder, the heating area of the flame on the object can be changed by changing the correspondence between the flame and the holes with different diameters, so that the students can easily study the object heating rate under different heating areas, and the operation is convenient.

[0020] 2. The first rotating nut and the second rotating nut are arranged on the threaded column, the rectangular plate can be moved when the position of the second rotating nut is adjusted, so that the positions of the placing plate and the mounting plate are changed, the rectangular plate is pressed and positioned under the action of the first rotating nut, the placing plate and the mounting plate can be stably used, and the object can be stably heated. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the connecting plate of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the adjustment plate of the utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of the circular hole of the utility model.

[0026] In the figure: 1. Base plate; 2. Threaded column; 3. Adjustment mechanism; 31. Circular plate; 311. Adjustment plate; 312. Hole; 32. Connecting plate; 321. Hollow cylinder; 33. Sliding groove; 331. Moving block; 332. Connecting rod; 4. Limit block; 5. Rectangular plate; 6. Placement plate; 7. Mounting plate; 8. Through hole; 9. Circular hole; 10. Spring; 11. Arc block; 12. Height adjustment mechanism; 121. First rotating nut; 122. Second rotating nut; 13. Spacer; 14. Alcohol lamp; 15. Brush. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example

[0029] Reference Figures 1-4The utility model provides a technical solution: a new multifunctional experimental device for physics teaching, including a base plate 1 and an adjusting mechanism 3, and a threaded column 2 is installed on the upper surface of the base plate 1, the adjusting mechanism 3 includes a circular plate 31, the circular plate 31 is installed on the threaded column 2, a movable adjusting plate 311 is installed under the circular plate 31, and holes 312 of different diameters are opened on the upper surface of the adjusting plate 311, a connecting plate 32 is stably installed on the threaded column 2, a hollow cylinder 321 is installed inside the connecting plate 32, a sliding groove 33 is opened on the upper surface of the adjusting plate 311, a moving block 331 is provided inside the sliding groove 33, and a connecting rod 332 is installed on the upper surface of the moving block 331, and one end of the connecting rod 332 is stably installed on the bottom of the circular plate 31 for stably moving the adjusting plate 311.

[0030] In a preferred embodiment, a limit block 4 is fixedly installed on the top of the threaded column 2, and a rectangular plate 5 is slidably installed on the outside of the threaded column 2. The two ends of the rectangular plate 5 are respectively stably installed with a placement plate 6 and a mounting plate 7. In order to prevent the rectangular plate 5 from sliding off the threaded column 2, this device will install a limit block 4 on the top of the threaded column 2. Under the action of the limit block 4, the rectangular plate 5 will be blocked, thereby setting the rectangular plate 5 to move within a controllable range, so that the positions of the mounting plate 7 and the placement plate 6 can be adjusted.

[0031] In a preferred embodiment, a plurality of through holes 8 are provided on the upper surface of the placement plate 6 and are evenly arranged on the upper surface of the placement plate 6 for placing and heating solid objects. When conducting experiments on solid objects, if a solid placement plate 6 is used, the heating effect on the object will be greatly reduced, resulting in an increase in the experimental time and affecting the experimental effect. Therefore, a plurality of through holes 8 are provided on the placement plate 6 to increase the fluidity of the air, enhance the heating effect on the object, and meet the requirements of use.

[0032] In a preferred embodiment, a circular hole 9 is opened on the upper surface of the mounting plate 7, and an arc-shaped hole is opened on the inner wall of the circular hole 9. A spring 10 is fixedly installed on the inner wall of the arc-shaped hole. One end of the spring 10 is fixedly connected to the arc block 11, and the arc block 11 is set inside the arc hole to slide. If the liquid is to be heated, the liquid needs to be loaded into the test tube. By heating the test tube, the liquid is indirectly heated. The liquid used in the experiment is generally water, so in actual operation, the test tube needs to be stably clamped to ensure that the experiment proceeds normally. By installing a movable arc block 11 inside the mounting plate 7, the arc block 11 is connected to the spring 10. The test tube will be stably clamped inside the mounting plate 7 under the clamping of the two arc blocks 11, thereby stably heating the test tube.

[0033] In actual use, due to the different heights of the test tubes, in the experiment, it is necessary to adjust the position of the test tubes so that the bottom of the test tubes are close to the upper surface of the adjustment plate 311 in order to heat the test tubes. A height adjustment mechanism 12 is installed on the threaded column 2. The height adjustment mechanism 12 includes a first rotating nut 121 and a second rotating nut 122. The first rotating nut 121 and the second rotating nut 122 are respectively threadedly connected to the outside of the threaded column 2, and the first rotating nut 121 is set above the rectangular plate 5, and the second rotating nut 122 is set below the rectangular plate 5. A hard brush 15 is fixedly installed on the bottom of the rectangular plate 5 for cleaning the outer surface of the threaded column 2. A pad 13 is placed on the upper surface of the base plate 1, and an alcohol lamp 14 is placed on the upper surface of the pad 13.

[0034] In actual use, when adjusting the position of the rectangular plate 5, the device can first rotate the second rotating nut 122 to move it downward. At this time, the rectangular plate 5 will move directly downward under the action of gravity and fall on the second rotating nut 122. After determining the position of the experiment, stop rotating the second rotating nut 122, and then rotate the first rotating nut 121, screw the first rotating nut 121 downward, so that the first rotating nut 121 squeezes the rectangular plate 5 and positions the rectangular plate 5, thereby stably using the placement plate 6.

[0035] Specifically, the working process or working principle of a new multifunctional experimental device for physics teaching is as follows: in studying the relationship between the heating area and the object's temperature rise rate, heat transfer and other physical phenomena, since the alcohol lamp 14 is directly ignited when in use, it is necessary to change the heating area of ​​the object in the process of studying the heat transfer rate. However, there is currently no good method to control the size of the flame. The general way to control the size of the flame is to control the length of the wick. Since the heating area needs to be changed in actual operation, simply changing the length of the wick is very slow to meet the actual use needs and cannot meet the experimental operation requirements. Therefore, this device is designed to solve this problem.

[0036] The present device can be used to change the size of the flame when the alcohol lamp 14 heats the test tube. By changing the size of the flame, the effect of changing the heating area on the heating rate of the test tube can be experimentally investigated. Specifically, the alcohol lamp 14 is placed on the pad 13 and, depending on the experimental object provided in the experiment, such as a solid or liquid, the object can be directly placed on the placement plate 6. Since the placement plate 6 is provided with a plurality of through holes 8, in actual operation, the position of the rectangular plate 5 is adjusted, and the placement plate 6 is moved to a position close to the adjustment plate 311. Then, the alcohol lamp 14 is ignited. The flame generated by the alcohol lamp 14 will pass through the interior of the hollow cylinder 321 and extend into the interior of the holes 312. As needed, the flame can be adjusted to burn in one of the holes 312. To increase the heating area of ​​the object, the hole 312 with a large aperture can be moved to the position of the flame. Conversely, the flame with a small aperture can be moved to the position of the flame. Moving holes 312 with different apertures to the position of the flame will change the heating area of ​​the object, thereby experimentally investigating the change in heating rate due to different heating areas.

[0037] When adjusting the position of the rectangular plate 5, the device can first rotate the second rotating nut 122 to move it downward. At this time, the rectangular plate 5 will directly move downward under the action of gravity and fall on the second rotating nut 122. After determining the experimental position, stop rotating the second rotating nut 122, and then rotate the first rotating nut 121. Screw the first rotating nut 121 downward so that the first rotating nut 121 squeezes the rectangular plate 5 and positions the rectangular plate 5, thereby stably using the placement plate 6.

[0038] If liquid is to be heated, the liquid can be placed in a test tube, which is clamped at the position of the arc block 11. Under the action of the spring 10, the test tube is stably mounted inside the mounting plate 7. Then, the rectangular plate 5 is rotated to move the test tube to the top of the adjustment plate 311. According to the above method, the position of the hole 312 is changed to change the area of ​​heating the test tube. After testing within a certain period of time, experimental data can be obtained to meet the requirements of use.

[0039] When the adjustment plate 311 is moved, in order to ensure that the adjustment plate 311 moves stably, a connecting rod 332 is provided at the bottom of the circular plate 31. The connecting rod 332 is fixedly connected to the moving block 331, and the moving block 331 is installed inside the sliding groove 33. Under the traction of the connecting rod 332, the adjustment plate 311 will move stably, avoiding one end of the adjustment plate 311 from tilting and affecting use.

Claims

1. A new multifunctional experimental device for physics teaching, characterized in that: It comprises a base plate (1), and a threaded column (2) is installed on the upper surface of the base plate (1); An adjusting mechanism (3), the adjusting mechanism (3) comprising: A circular plate (31), the circular plate (31) being mounted on the threaded column (2), a movable adjustment plate (311) being mounted below the circular plate (31), and holes (312) of varying diameters being formed on the upper surface of the adjustment plate (311); A connecting plate (32), wherein the connecting plate (32) is stably mounted on the threaded column (2), and a hollow cylinder (321) is mounted inside the connecting plate (32); A sliding groove (33) is provided on the upper surface of the adjusting plate (311), a moving block (331) is provided inside the sliding groove (33), a connecting rod (332) is installed on the upper surface of the moving block (331), and one end of the connecting rod (332) is stably installed on the bottom of the circular plate (31) for stably moving the adjusting plate (311).

2. The novel multifunctional experimental device for physics teaching according to claim 1 is characterized in that: A limiting block (4) is fixedly installed on the top of the threaded column (2), a rectangular plate (5) is slidably installed on the outside of the threaded column (2), and a placement plate (6) and a mounting plate (7) are stably installed on both ends of the rectangular plate (5).

3. The novel multifunctional experimental device for physics teaching according to claim 2 is characterized in that: The upper surface of the placement plate (6) is provided with a plurality of through holes (8) which are evenly arranged on the upper surface of the placement plate (6) and are used for placing and heating solids.

4. The novel multifunctional experimental device for physics teaching according to claim 3 is characterized in that: A circular hole (9) is provided on the upper surface of the mounting plate (7), and an arc-shaped hole is provided on the inner wall of the circular hole (9). A spring (10) is fixedly installed on the inner wall of the arc-shaped hole. One end of the spring (10) is fixedly connected to the arc-shaped block (11), and the arc-shaped block (11) is arranged to slide inside the arc-shaped hole.

5. The novel multifunctional experimental device for physics teaching according to claim 4 is characterized in that: A height adjustment mechanism (12) is installed on the threaded column (2), and the height adjustment mechanism (12) comprises a first rotating nut (121) and a second rotating nut (122).

6. The novel multifunctional experimental device for physics teaching according to claim 5 is characterized in that: The first rotating nut (121) and the second rotating nut (122) are respectively threadedly connected to the outside of the threaded column (2), and the first rotating nut (121) is arranged above the rectangular plate (5), and the second rotating nut (122) is arranged below the rectangular plate (5).

7. The novel multifunctional experimental device for physics teaching according to claim 6 is characterized in that: A hard brush (15) is fixedly mounted on the bottom of the rectangular plate (5) for cleaning the outer surface of the threaded column (2).

8. The novel multifunctional experimental device for physics teaching according to claim 7 is characterized in that: A pad (13) is placed on the upper surface of the base plate (1), and an alcohol lamp (14) is placed on the upper surface of the pad (13).

Images