An iodine sublimation demonstration device

Abstract

The utility model discloses an iodine sublimation demonstration device, comprising a base, a gripping handle fixedly connected to the top of the base, a high temperature resistant glass tube vertically placed inside the high temperature resistant test tube, and a plurality of groups of iodine particles placed at the bottom end inside the high temperature resistant glass tube. The iodine sublimation demonstration device is provided with a switch, an internal threaded tube seat, a heating wire, a ceramic heat conducting plate and a lithium battery. When in use, the heating wire in the internal threaded tube seat and the lithium battery are connected to conduct heat, and the bottom of the high temperature resistant test tube is heated by the ceramic heat conducting plate to heat the cold water inside the high temperature resistant test tube, which is used to demonstrate sublimation. If the switch on the left side is not turned on, the inside of the corresponding high temperature resistant test tube is still cold water, which is used to demonstrate condensation. During the demonstration, the high temperature resistant glass tube containing iodine particles is directly inserted into the corresponding high temperature resistant test tube, so that the function of rapid heating is realized, and the problem that the device does not have the function of rapid heating is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching equipment, in particular to iodine sublimation demonstration equipment. Background Art

[0002] Elemental iodine is purple-black crystals. It sublimates under slight heat to form purple iodine mist. After sublimation, it is easy to condense when cooled and re-condense into crystals. Due to its easy sublimation and condensation hot spots, it is often used as a teaching demonstration case for sublimation-condensation reactions in middle school chemistry classes.

[0003] At present, the equipment used to demonstrate the iodine sublimation phenomenon in campus classrooms is relatively troublesome to prepare. Two beakers need to be prepared, one for hot water and the other for cold water. Then a test tube is taken, a certain amount of iodine particles are placed inside and then sealed. The test tube is first inserted into the hot water beaker, and the iodine is heated and sublimated into purple iodine mist. The test tube containing iodine mist is inserted into the cold water beaker, and the iodine mist is condensed and turned back into particles. There are some functional deficiencies in the actual demonstration process, and there is room for improvement. For example, two cups of water need to be prepared separately. The conventional solution is to use an alcohol lamp to burn one cup on the spot, which is time-consuming. It is also troublesome to use a beaker to connect hot water, which is easy to burn your hands and does not have the function of rapid heating. Secondly, after the beaker is inserted into the test tube, it is not convenient to lift it up for display, and it is difficult for students in the back row to observe it, and it is not convenient to display the experimental effect. In addition, during the demonstration, the test tube needs to be held in the hands of the demonstrator all the time, and it is also tiring to display it for a long time, and it does not have the function of fixing the display tube.

[0004] Now, a new type of iodine sublimation demonstration equipment is proposed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide an iodine sublimation demonstration device to solve the problem of lack of rapid heating function proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an iodine sublimation demonstration device, comprising a base, a holding handle fixedly connected to the top of the holding handle, a top support fixedly connected to the top of the top support, two groups of switches are arranged at the front end of the top support, internally threaded tube seats are fixedly connected to the two sides of the top of the top support, a ceramic heat conducting plate is fixedly connected to the bottom end of the internally threaded tube seat, a heating wire is arranged at the bottom end of the ceramic heat conducting plate, a high-temperature resistant test tube is inserted into the internally threaded tube seat, a high-temperature resistant glass tube is vertically placed inside the high-temperature resistant test tube, multiple groups of iodine particles are placed at the bottom end of the high-temperature resistant glass tube, an external fixed ring is sleeved on the top end of the externally heated glass tube, side extension heads are fixedly connected to the two sides of the external fixed ring, a test tube clamp is fixedly connected to the bottom of the side extension head, and a USB charging port is arranged at the front end of the base.

[0007] Preferably, a lithium battery is installed inside the gripping handle, and the switch, heating wire and lithium battery are electrically connected.

[0008] Preferably, the internally threaded tube seat is symmetrically distributed about the vertical center line of the top support platform, and the outer diameter of the high-temperature resistant test tube is consistent with the inner diameter of the internally threaded tube seat.

[0009] Preferably, the threads at the outer bottom end of the high temperature resistant test tube match the threads inside the internal threaded tube holder, and the bottom end of the high temperature resistant test tube is connected to the top end of the ceramic heat conducting plate.

[0010] Preferably, vertical center lines of the base, the gripping handle and the top support coincide with each other, and a counterweight is fixedly connected to the bottom of the base.

[0011] Preferably, the inner diameter of the outer fixing ring is consistent with the outer diameter of the high temperature resistant test tube, and the two are tightly connected.

[0012] Preferably, the side extension heads are symmetrically distributed about a vertical center line of the outer fixing ring.

[0013] Preferably, the test tube clamp is clamped at the edge of the high temperature resistant test tube, and the bottom end of the high temperature resistant glass tube is higher than the bottom end of the high temperature resistant test tube.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the iodine sublimation demonstration device not only realizes the function of rapid heating and conveniently displays the experimental effect, but also realizes the function of conveniently fixing the display tube;

[0015] (1) By setting a switch, an internal threaded tube seat, a heating wire, a ceramic heat conductive plate and a lithium battery, when in use, two high temperature resistant test tubes are first screwed into the internal threaded tube seat, and cold water is poured in. The switch on the right side of the top support is turned on, and the heating wire and the lithium battery in the corresponding internal threaded tube seat are connected and conduct heat. The bottom of the high temperature resistant test tube is heated by the ceramic heat conductive plate, so that the cold water inside it becomes hot, which is used to demonstrate sublimation. If the switch on the left side is not turned on, the inside of the corresponding high temperature resistant test tube is still cold water, which is used to demonstrate desublimation. During the demonstration, the high temperature resistant glass tube containing iodine particles is directly inserted into the corresponding high temperature resistant test tube, and the sublimation and desublimation phenomena are demonstrated by water heat conduction or cooling, thereby realizing the function of rapid heating;

[0016] (2) By providing a base, a gripping handle, a top support, a high-temperature test tube, a high-temperature glass tube and a counterweight, when in use, the high-temperature glass tube containing iodine particles is inserted into the corresponding high-temperature test tube. When sublimation or condensation occurs, the demonstrator can grab the gripping handle to pick up the entire device, which is convenient for students below to watch and can be placed directly on the desktop. The base, gripping handle and top support can also raise the position of the high-temperature test tube to facilitate the viewing of students in the back row. The counterweight can increase the stability of the device, thereby realizing the function of facilitating the display of experimental effects.

[0017] (3) By providing an external fixing ring, a side extension head and a test tube clamp, when the high temperature resistant glass tube is inserted into the corresponding high temperature resistant test tube, the test tube clamp outside the high temperature resistant glass tube can be directly clamped at the edge of the high temperature resistant test tube without the need for the demonstrator to hold it. The external fixing ring and the side extension head provide physical support for the installation and fixation of the test tube clamp, thereby realizing the function of facilitating the fixation of the display tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a partial cross-sectional structure of the utility model in a front view;

[0019] Figure 2 It is a schematic diagram of a top support platform of the utility model, a partial cross-section enlarged structure viewed from above;

[0020] Figure 3 For the utility model Figure 1 A partial cross-section at the center is an enlarged structural diagram;

[0021] Figure 4 It is a front view enlarged structural schematic diagram of the high temperature resistant glass tube of the utility model.

[0022] In the figure: 1. Base; 2. Holding handle; 3. Top support; 4. Switch; 5. Internal threaded tube holder; 6. Heating wire; 7. Ceramic heat conductive plate; 8. Lithium battery; 9. High temperature resistant test tube; 10. High temperature resistant glass tube; 11. Iodine particles; 12. External fixing ring; 13. Side extension head; 14. Test tube clamp; 15. USB charging port; 16. Counterweight. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1: Please refer to Figure 1-4, an iodine sublimation demonstration device, comprising a base 1, a top support 3 is fixedly connected to the top of a gripping handle 2, two sets of switches 4 are arranged at the front end of the top support 3, internal threaded tube seats 5 are fixedly connected to the two sides of the top of the top support 3, a ceramic heat conducting plate 7 is fixedly connected to the bottom end of the internal threaded tube seat 5, a heating wire 6 is arranged at the bottom end of the ceramic heat conducting plate 7, a high temperature resistant test tube 9 is inserted into the internal threaded tube seat 5, a high temperature resistant glass tube 10 is vertically placed inside the high temperature resistant test tube 9, a plurality of groups of iodine particles 11 are placed at the bottom end of the internal high temperature resistant glass tube 10, and a USB charging port 15 is arranged at the front end of the base 1;

[0025] A lithium battery 8 is installed inside the gripping handle 2, and the switch 4, the heating wire 6, and the lithium battery 8 are electrically connected. The internal threaded tube seat 5 is symmetrically distributed about the vertical center line of the top support platform 3. The outer diameter of the high temperature resistant test tube 9 is consistent with the inner diameter of the internal threaded tube seat 5. The thread at the bottom end of the outside of the high temperature resistant test tube 9 is consistent with the thread inside the internal threaded tube seat 5. The bottom end of the high temperature resistant test tube 9 is connected to the top of the ceramic heat conducting plate 7, which can directly heat water for convenient and quick demonstration.

[0026] Specifically, Figure 2 and Figure 3 As shown, the high temperature resistant test tube 9 is screwed into the internal threaded tube seat 5, and cold water is poured into it, and the switch 4 on the right side of the top support platform 3 is turned on. The heating wire 6 and the lithium battery 8 in the corresponding position of the internal threaded tube seat 5 are connected and conduct electricity to generate heat, and the bottom of the high temperature resistant test tube 9 is heated through the ceramic heat conductive plate 7 to heat the cold water inside it for demonstrating sublimation. If the switch 4 on the left is not turned on, the corresponding high temperature resistant test tube 9 still has cold water inside it, which is used to demonstrate condensation.

[0027] Embodiment 2: A gripping handle 2 is fixedly connected to the top of the base 1, and the vertical center lines of the base 1, the gripping handle 2, and the top support 3 coincide with each other. A counterweight 16 is fixedly connected to the bottom of the base 1, which is convenient for students below to watch and for the demonstrator to pick up and display;

[0028] Specifically, Figure 1 and Figure 3 As shown, when sublimation or condensation occurs, the demonstrator can grasp the handle 2 to pick up the entire device, which is convenient for students below to watch, and place it directly on the desktop. The base 1, the handle 2, and the top support 3 can also raise the position of the high-temperature resistant test tube 9 to facilitate viewing by students in the back row. The counterweight 16 can increase the stability of the device.

[0029] Embodiment 3: The top of the outer surface of the high temperature resistant glass tube 10 is sleeved with an outer fixing ring 12, and the two sides of the outer fixing ring 12 are respectively fixedly connected with side extension heads 13, and the bottom of the side extension head 13 is fixedly connected with a test tube clamp 14. The inner diameter of the outer fixing ring 12 is consistent with the outer diameter of the high temperature resistant test tube 9, and the two are tightly connected. The side extension heads 13 are symmetrically distributed about the vertical center line of the outer fixing ring 12, and the test tube clamp 14 is clamped at the edge of the high temperature resistant test tube 9. The bottom end of the high temperature resistant glass tube 10 is higher than the bottom end of the high temperature resistant test tube 9, which is convenient for fixing the test tube without the need for the demonstrator to support it with his hands;

[0030] Specifically, Figure 1 and Figure 4 As shown, the test tube clamp 14 on the outside of the high temperature resistant glass tube 10 can be directly clamped on the edge of the high temperature resistant test tube 9 without the need for the demonstrator to hold it. The external fixing ring 12 and the side extension head 13 provide physical support for the installation and fixation of the test tube clamp 14.

[0031] Working principle: When the utility model is in use, first, two high-temperature resistant test tubes 9 are screwed into the internally threaded tube seat 5, and cold water is poured in, and the switch 4 on the right side of the top support platform 3 is turned on, and the heating wire 6 and the lithium battery 8 in the corresponding position of the internally threaded tube seat 5 are connected to conduct heat, and the bottom of the high-temperature resistant test tube 9 is heated by the ceramic heat-conducting plate 7 to heat the cold water inside it, which is used to demonstrate sublimation. If the switch 4 on the left is not turned on, the corresponding high-temperature resistant test tube 9 still has cold water inside, which is used to demonstrate condensation. During the demonstration, the high-temperature resistant glass tube 10 containing iodine particles 11 is directly inserted into the corresponding high-temperature resistant test tube 9, and the sublimation and condensation phenomena are demonstrated by water heat conduction or cooling. Insert the high temperature resistant glass tube 10 filled with iodine particles 11 into the corresponding high temperature resistant test tube 9. When sublimation or condensation occurs, the demonstrator can grab the gripping handle 2 to pick up the entire device, which is convenient for students below to watch and can be placed directly on the desktop. The base 1, gripping handle 2, and top support 3 can also raise the position of the high temperature resistant test tube 9 to facilitate the viewing of students in the back row. The counterweight 16 can increase the stability of the device. When inserting the high temperature resistant glass tube 10 into the corresponding high temperature resistant test tube 9, the test tube clamp 14 on the outside of the high temperature resistant glass tube 10 can be directly clamped at the edge of the high temperature resistant test tube 9 without the demonstrator holding it. The external fixing ring 12 and the side extension head 13 provide physical support for the installation and fixation of the test tube clamp 14.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An iodine sublimation demonstration device, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a gripping handle (2), the top of the gripping handle (2) is fixedly connected to a top support platform (3), the front end of the top support platform (3) is provided with two sets of switches (4), the two sides of the top of the top support platform (3) are respectively fixedly connected to internal threaded pipe sockets (5), the bottom end of the internal threaded pipe socket (5) is fixedly connected to a ceramic heat conducting plate (7), the bottom end of the ceramic heat conducting plate (7) is provided with an electric heating wire (6), and the internal threaded pipe socket (5) is plugged with a high temperature resistant test tube (9), a high temperature resistant glass tube (10) is vertically placed inside the high temperature resistant test tube (9), a plurality of groups of iodine particles (11) are placed at the bottom end of the high temperature resistant glass tube (10), an external fixing ring (12) is sleeved on the top end of the outside of the high temperature resistant glass tube (10), side extension heads (13) are fixedly connected to the two sides of the external fixing ring (12), a test tube clamp (14) is fixedly connected to the bottom of the side extension head (13), and a USB charging port (15) is provided at the front end of the base (1).

2. An iodine sublimation demonstration device according to claim 1, characterized in that: A lithium battery (8) is installed inside the gripping handle (2), and the switch (4), the heating wire (6), and the lithium battery (8) are electrically connected.

3. An iodine sublimation demonstration device according to claim 1, characterized in that: The internal threaded tube seat (5) is symmetrically distributed about the vertical center line of the top support platform (3), and the outer diameter of the high temperature resistant test tube (9) is consistent with the inner diameter of the internal threaded tube seat (5).

4. An iodine sublimation demonstration device according to claim 1, characterized in that: The threads at the outer bottom end of the high temperature resistant test tube (9) match the threads inside the internal threaded tube holder (5), and the bottom end of the high temperature resistant test tube (9) is connected to the top end of the ceramic heat conducting plate (7).

5. An iodine sublimation demonstration device according to claim 1, characterized in that: The vertical center lines of the base (1), the gripping handle (2) and the top support platform (3) coincide with each other, and a counterweight (16) is fixedly connected to the bottom of the base (1).

6. An iodine sublimation demonstration device according to claim 1, characterized in that: The inner diameter of the outer fixing ring (12) is consistent with the outer diameter of the high temperature resistant test tube (9), and the two are tightly connected.

7. An iodine sublimation demonstration device according to claim 1, characterized in that: The side extension heads (13) are symmetrically distributed about the vertical center line of the outer fixing ring (12).

8. An iodine sublimation demonstration device according to claim 1, characterized in that: The test tube clamp (14) is clamped at the edge of the high temperature resistant test tube (9), and the bottom end of the high temperature resistant glass tube (10) is higher than the bottom end of the high temperature resistant test tube (9).

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