Air compression ignition instrument

Abstract

The utility model relates to an air compression ignition instrument which comprises a cylinder body, a switch, a base, a connecting rod and a thermometer. The top of the cylinder body is connected with the connecting rod, and the bottom of the cylinder body is fixed on the base; the thermometer and the switch are fixed on the base, and the switch is connected with the thermometer through an internal wire to realize on-off control of the thermometer. According to the utility model, the temperature change caused by air compression is displayed by using the thermometer, and the experiment effect does not need to be indirectly observed by using inflammable substances, so that the experiment effect is more direct, and the experiment process is safer and more reliable.

Description

Technical Field

[0001] The utility model relates to the field of experimental teaching instruments, in particular to an air compression ignition instrument. Background Art

[0002] The air compression ignition instrument is a teaching tool used to demonstrate the phenomenon of temperature rise caused by air compression. In traditional educational experiments, teachers usually use nitrocellulose in a compressed gas cylinder to observe this phenomenon, but this method has limitations and safety hazards. Nitrocellulose is a flammable substance that may cause fires and other accidents. In addition, the experimental results are not intuitive enough and it is difficult to accurately convey the principle of air compression causing temperature rise. Utility Model Content

[0003] The purpose of the utility model is to provide an air compression ignition instrument. To achieve the above purpose, the utility model provides the following technical solutions:

[0004] An air compression ignition instrument comprises a cylinder, a switch, a base, a connecting rod and a thermometer; the top of the cylinder is connected to the connecting rod, and the bottom of the cylinder is fixed on the base; the thermometer and the switch are fixed on the base, and the switch is connected to the thermometer through internal wiring to realize the switch control of the thermometer.

[0005] Preferably, the air compression ignition instrument also includes a handle, an end cover and a base connector; the top of the connecting rod is connected to the handle; the end cover is fixed to the top of the cylinder body, and the connecting rod passes through the end cover and is connected to the cylinder body; the base connector is fixed between the cylinder body and the base.

[0006] Preferably, a piston is connected to the bottom of the connecting rod and can move up and down in the cavity of the cylinder body.

[0007] Preferably, a sealing ring is installed on the piston.

[0008] Preferably, a PT100 temperature sensor is installed at the bottom of the cylinder and is connected to the thermometer.

[0009] Preferably, the cylinder body is made of acrylic material.

[0010] Preferably, the base comprises an outer frame, a panel and a decorative shell, the decorative shell is fixed on the outer frame, the panel is fixed on the top of the decorative shell, and the thermometer and the switch are arranged on the panel.

[0011] Preferably, the outer frame is made of ABS.

[0012] Preferably, the panel is made of ABS.

[0013] Preferably, the decorative shell is formed by bending a galvanized steel plate, and the surface is epoxy sprayed.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model uses a thermometer to display the temperature change caused by air compression, and does not need to indirectly observe the experimental effect by using flammable substances, so that the experimental effect is more direct and the experimental process is safer and more reliable.

[0016] 2. This experiment uses a new PT100 temperature sensor, which is more sensitive to temperature and can display the experimental results more intuitively.

[0017] 3. The utility model improves the durability and stability of the equipment by adopting the outer frame and decorative shell made of ABS material. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an exploded view of the utility model;

[0019] Figure 2 This is a detailed schematic diagram of the base of the utility model;

[0020] Figure 3 It is a detailed schematic diagram of the end cover of the utility model;

[0021] Figure 4 It is a detailed schematic diagram of the connecting rod of the utility model;

[0022] Figure 5 This is a schematic diagram of the internal details of the cylinder body of the utility model;

[0023] Figure 6 This is a schematic diagram of the outer frame and the bottom of the panel of the utility model;

[0024] Figure 7 This is a detailed schematic diagram of the thermometer of the utility model;

[0025] In the figure: 1-base; 2-thermometer; 3-base connector; 4-cylinder; 5-end cover; 6-connecting rod; 7-handle; 8-switch; 9-piston; 11-outer frame; 111-first round hole; 12-decorative shell; 121-fifth threaded hole; 13-panel; 14-second round hole; 15-third slot; 16-first slot; 17-second slot; 18-circular workpiece; 181-fourth threaded hole; 21-first workpiece; 22-second workpiece; 221-fourth slot; 31-first threaded hole; 32-third threaded hole; 41-first thread; 42-second thread; 43-PT100 temperature sensor; 51-second threaded hole; 71-circular slot; 91-sealing ring. DETAILED DESCRIPTION

[0026] The background photoelectric suppression sensor housing of the utility model will be described in more detail below in conjunction with the schematic diagram, wherein the preferred embodiment of the utility model is shown, and it should be understood that the utility model described herein can be modified by those skilled in the art, while still achieving the beneficial effects of the utility model. Therefore, the following description should be understood as being widely known to those skilled in the art, and not as a limitation to the utility model.

[0027] For the sake of clarity, not all features of the actual embodiments are described. In the following description, well-known functions and structures are not described in detail because they would make the utility model confusing with unnecessary details. It should be recognized that in the development of any actual embodiment, a large number of implementation details must be made to achieve the developer's specific goals, such as changing from one embodiment to another according to the limitations of the relevant system or the relevant business. In addition, it should be recognized that such development work may be complex and time-consuming, but it is just routine work for those skilled in the art.

[0028] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0029] See also Figure 1-7 The utility model provides an air compression ignition instrument, including a base 1, a thermometer 2, a cylinder 4, a connecting rod 6 and a switch 8; the top of the cylinder 4 is connected to the connecting rod 6, and the bottom of the cylinder 4 is fixed on the base 1; the thermometer 2 and the switch 8 are fixed on the base 1, and the switch 8 is connected to the thermometer 2 through internal wiring to realize the switch control of the thermometer 2.

[0030] Specifically, the switch 8 and the thermometer 2 are also connected to an internal power supply to form a closed circuit. The circuit is connected by opening the switch 8 and disconnected by closing the switch 8, thereby realizing switch control of the thermometer 2.

[0031] Furthermore, the air compression ignition instrument also includes a base connector 3, an end cover 5 and a handle 7; the top of the connecting rod 6 is connected to the handle 7; the end cover 5 is fixed to the top of the cylinder body 4, and the connecting rod 6 passes through the end cover 5 and is connected to the cylinder body 4; the base connector 3 is fixed between the cylinder body 4 and the base 1.

[0032] For details, please combine Figure 1-Figure 3As shown, the base connector 3 is provided with a first threaded hole 31, the end cover 5 is provided with a second threaded hole 51, the bottom and top of the cylinder body 4 are respectively provided with a first thread 41 and a second thread 42, the bottom of the cylinder body 4 is fixed by screwing the first thread 41 into the first threaded hole 31 in the base connector 3, and the top of the cylinder body 4 is fixed by screwing the second thread 42 into the second threaded hole 51 in the end cover 5.

[0033] For further information, please refer to Figure 4 As shown, a piston 9 is connected to the bottom of the connecting rod 6 and can move up and down in the cavity of the cylinder body 4.

[0034] In one embodiment, a circular slot 71 is provided at the bottom of the handle 7 , and the handle 7 is engaged with the top of the connecting rod 6 via the circular slot 71 .

[0035] In one embodiment, please refer to Figure 5 As shown, a sealing ring 91 is also installed on the piston 9 to ensure sealing.

[0036] Please continue to refer to Figure 5 A PT100 temperature sensor 43 is also fixed to the bottom of the cylinder 4 to sense the temperature change in the cavity of the cylinder. For example, the PT100 temperature sensor 43 is screwed to the bottom of the cylinder 4 in the form of a thread, and a connecting wire is provided on the thread and connected to the thermometer 2, so that the PT100 temperature sensor 43 is connected to the thermometer 2 to display the temperature change in the cavity of the cylinder.

[0037] The PT100 temperature sensor has high accuracy, and the error range is usually ±(0.1℃ to 0.3℃). The platinum material used in the PT100 temperature sensor has high chemical and mechanical stability, which enables the PT100 sensor to maintain its performance during long-term use. Based on the above advantages, this experiment uses a new PT100 temperature sensor, which is convenient for long-term use, and is more sensitive to temperature during the experiment, and can more intuitively display the experimental results.

[0038] Please continue to refer to Figure 1 The base includes an outer frame 11, a decorative shell 12 and a panel 13; the decorative shell 12 is fixed on the outer frame 11, the panel 13 is fixed on the top of the decorative shell 12, and the thermometer 2 and the switch 8 are arranged on the panel 13.

[0039] In one embodiment, please refer to Figure 1 and Figure 6As shown, the outer frame 11 is provided with four first circular holes 111, the decorative shell 12 is provided with four fifth threaded holes 121, the outer frame 11 is mounted on the bottom of the decorative shell 12, and is fixed by screws passing through the first circular holes 111 and screwing into the fifth threaded holes 121. The top of the decorative shell 12 is provided with a first slot 16, and the panel 13 is connected to the decorative shell 12 through the first slot 16.

[0040] Specifically, the panel 13 is further provided with a second circular hole 14 , and the switch 8 is connected to the base 1 through the second circular hole 14 .

[0041] The bottom of the bottom connecting member 3 is provided with four third threaded holes 32 (such as Figure 2 As shown), a circular workpiece 18 is provided at the bottom of the panel 13 (as shown Figure 6 The circular workpiece 18 is provided with four fourth screw holes 181, the bottom connecting member 3 passes through the circular workpiece 18, and the third threaded hole 32 of the bottom connecting member 3 is fixed to the fourth threaded hole 181 by screws.

[0042] Please combine Figure 1 , Figure 6 and Figure 7 A second card slot 17 and a third card slot 15 are also provided on the top of the panel 13. A first workpiece 21 and a second workpiece 22 are provided on the thermometer 2. The first workpiece 21 is connected to the bottom of the panel 13 through the third card slot 15. A fourth card slot 221 is also provided on the second workpiece 22. The thermometer 2 is connected to the second workpiece 22 through the fourth card slot 221 and is connected to the top of the panel through the second card slot 17.

[0043] In the present invention, the cylinder body 4 is made of acrylic material; the outer frame 11 is made of ABS; the panel 13 is made of ABS; the decorative shell is made of galvanized steel plate by bending, and the surface is epoxy sprayed.

[0044] In summary, in the background suppression photoelectric sensor housing provided by the embodiment of the present invention, the above is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any technician in the relevant technical field, without departing from the scope of the technical solution of the present invention, makes any form of equivalent replacement or modification to the technical solution and technical content disclosed in the present invention, which does not depart from the content of the technical solution of the present invention and still falls within the protection scope of the present invention.

Claims

1. An air compression ignition instrument, characterized in that: It includes a cylinder, a switch, a base, a connecting rod and a thermometer; the top of the cylinder is connected to the connecting rod, and the bottom of the cylinder is fixed on the base; the thermometer and the switch are fixed on the base, and the switch is connected to the thermometer through internal wiring to realize the switch control of the thermometer.

2. The air compression ignition device according to claim 1, characterized in that: It also includes a handle, an end cover and a base connector; the top of the connecting rod is connected to the handle; the end cover is fixed to the top of the cylinder body, and the connecting rod passes through the end cover and is connected to the cylinder body; the base connector is fixed between the cylinder body and the base.

3. The air compression ignition instrument according to claim 1, characterized in that: The bottom of the connecting rod is connected with a piston, which can move up and down in the cavity of the cylinder body.

4. The air compression ignition instrument according to claim 3, characterized in that: A sealing ring is installed on the piston.

5. The air compression ignition instrument according to claim 1, characterized in that: A PT100 temperature sensor is installed at the bottom of the cylinder and is connected to the thermometer.

6. The air compression ignition device according to claim 1, characterized in that: The cylinder body is made of acrylic material.

7. The air compression ignition instrument according to claim 1, characterized in that: The base comprises an outer frame, a panel and a decorative shell. The decorative shell is fixed on the outer frame, the panel is fixed on the top of the decorative shell, and the thermometer and the switch are arranged on the panel.

8. The air compression ignition instrument according to claim 7, characterized in that: The outer frame is made of ABS.

9. The air compression ignition device according to claim 7, characterized in that: The panel is made of ABS.

10. The air compression ignition device according to claim 7, characterized in that: The decorative shell is formed by bending a galvanized steel plate, and the surface is epoxy sprayed.

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