Experimental device for measuring solid specific heat capacity through calorimetric method

Abstract

The invention discloses an experimental device for measuring the specific heat capacity of a solid through a calorimetric method. The experimental device comprises a movable base, a double-shaft stirring mechanism, a lifting mechanism, a rotary driving assembly and a steel ball heating mechanism. A box body and a control system are mounted on the movable base, and a feeding hopper and a temperature sensor are mounted on the box body; the double-shaft stirring mechanism is mounted in the box body; the lifting mechanism is mounted on the movable base, and a lifting seat is mounted at the lifting end of the lifting mechanism; the rotation driving assembly is installed on the lifting base, and a support is installed at the output end of the rotation driving assembly. The steel ball heating mechanism is installed on the support, and a discharging assembly is installed at the bottom of the steel ball heating mechanism. Wherein the discharging assembly, the steel ball heating mechanism, the rotary driving assembly, the lifting mechanism, the double-shaft stirring mechanism and the temperature sensor are all electrically connected with the control system. According to the invention, automatic discharging and efficient mixing can be realized, the heat transfer process is accelerated, and the working efficiency and the experiment effect are improved.

Description

Technical Field

[0001] The invention relates to the technical field of experimental devices, in particular to an experimental device for measuring the specific heat capacity of solids using a calorimetric method. Background Art

[0002] In the field of materials science, the specific heat capacity of solids is an important physical parameter that describes the ability of a substance to absorb or release heat under specific conditions. Traditional experimental setups often rely on manual operations, such as manually adding heated steel balls to water. This is not only inefficient but also difficult to ensure consistency in experimental conditions each time, thus affecting the accuracy and repeatability of experimental results. In addition, traditional stirring methods are relatively simple and cannot quickly and evenly mix water and high-temperature steel balls, resulting in delays and errors in temperature measurement. At the same time, experimental setups often lack flexibility and adaptability, and the position of steel ball heating and discharge cannot be easily adjusted, which limits work efficiency and experimental results.

[0003] Therefore, an experimental device for measuring the specific heat capacity of solids by calorimetry is proposed. Summary of the Invention

[0004] The object of the present invention is to provide an experimental device for measuring the specific heat capacity of solids by calorimetry, aiming to solve or improve at least one of the above-mentioned technical problems.

[0005] To achieve the above object, the present invention provides the following solution: The present invention provides an experimental device for measuring the specific heat capacity of solids by calorimetry, comprising:

[0006] A movable base, wherein a box and a control system are installed on the movable base, and a feed hopper and a temperature sensor are installed on the box;

[0007] A double-shaft stirring mechanism, the double-shaft stirring mechanism being installed in the box;

[0008] A lifting mechanism, the lifting mechanism being mounted on the movable base, and a lifting seat being mounted on the lifting end of the lifting mechanism;

[0009] A rotary drive assembly, the rotary drive assembly being mounted on the lifting seat, and a bracket being mounted on an output end of the rotary drive assembly;

[0010] A steel ball heating mechanism, the steel ball heating mechanism is installed on the bracket, and a discharge assembly is installed at the bottom of the steel ball heating mechanism;

[0011] Wherein, the discharge assembly, the steel ball heating mechanism, the rotary drive assembly, the lifting mechanism, the biaxial stirring mechanism and the temperature sensor are all electrically connected to the control system.

[0012] According to an experimental device for measuring the specific heat capacity of solids by calorimetry provided by the present invention, the biaxial stirring mechanism comprises:

[0013] A stirring motor, the stirring motor is installed on the top of the box, and the stirring motor is electrically connected to the control system;

[0014] A main rotating shaft, the main rotating shaft being mounted on the output shaft of the stirring motor via a coupling; the main rotating shaft extending into the housing, and a plurality of first stirring rods being mounted on the main rotating shaft;

[0015] a driving gear, the driving gear being mounted on the main shaft;

[0016] A secondary rotating shaft, the secondary rotating shaft being rotatably connected to the housing, and a plurality of second stirring rods being mounted on the secondary rotating shaft;

[0017] A driven gear is mounted on the auxiliary shaft and is meshed with the driving gear for transmission.

[0018] According to an experimental device for measuring specific heat capacity of solids by calorimetry provided by the present invention, the lifting mechanism comprises:

[0019] A vertical plate, the vertical plate is installed on the top surface of the movable base, and the vertical plate is located on one side of the box;

[0020] A screw motor, the screw motor being mounted on the bottom of the side wall of the vertical plate and electrically connected to the control system;

[0021] A screw rod, the screw rod being mounted on the side wall of the vertical plate through a bearing, and one end of the screw rod being axially connected to the output shaft of the screw motor through a coupling;

[0022] The sliding sleeve is arranged on the screw rod, and the lifting seat is installed on the sliding sleeve.

[0023] According to the experimental device for measuring the specific heat capacity of solids by calorimetry provided by the present invention, the outer wall of the box is provided with a thermal insulation layer.

[0024] According to an experimental device for measuring the specific heat capacity of solids by calorimetry provided by the present invention, the rotation drive assembly includes a drive motor electrically connected to the control system, the drive motor is installed on the top of the lifting seat through a motor seat, and the bracket is installed on the output shaft of the drive motor.

[0025] According to an experimental device for measuring the specific heat capacity of solids by calorimetry provided by the present invention, the steel ball heating mechanism includes a shell mounted on the bracket, a heater and an aluminum bottle are installed in the shell, the heater is electrically connected to the control system, a plurality of steel balls are provided in the aluminum bottle, the bottom of the aluminum bottle is fixedly connected to and communicated with the discharge assembly, and the discharge assembly extends out of the shell.

[0026] According to an experimental device for measuring specific heat capacity of solids by calorimetry provided by the present invention, the discharge assembly includes a discharge pipe, a solenoid valve is installed on the discharge pipe, and the solenoid valve is electrically connected to the control system.

[0027] According to an experimental device for measuring the specific heat capacity of solids by calorimetry provided by the present invention, the movable base includes a base body, a lifting frame is installed at the bottom of the base body, universal wheels are installed at the four corners of the bottom of the lifting frame, and the box and the vertical plate are both installed on the base body.

[0028] The present invention discloses the following technical effects:

[0029] The present invention can control the heating temperature of the steel balls and maintain a constant temperature through the steel ball heating mechanism, and control the discharge assembly to open through the control system, thereby realizing the rapid and automatic discharge of the steel balls into the box. This not only improves the experimental efficiency, but also ensures that the initial conditions of the steel balls are consistent in each experiment, thereby improving the accuracy and repeatability of the experimental results.

[0030] The present invention can more effectively mix the room temperature water and the high temperature steel balls in the box through the dual-axis stirring mechanism, accelerate the heat transfer process, reduce the delay and error of temperature measurement, and more accurately capture the change of water temperature over time, providing reliable data support for the accurate calculation of the specific heat capacity of solids, thereby improving the experimental effect;

[0031] The present invention can conveniently adjust the height and position of the steel ball heating mechanism through the combined use of the lifting mechanism and the rotary drive assembly, so that the discharge assembly can be accurately aligned with the feed hopper, thereby improving the convenience and work efficiency of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 It is the front view of the present invention;

[0034] Figure 2This is a schematic diagram of the installation of the box and the movable base in the present invention;

[0035] Figure 3 It is a structural schematic diagram of the double-shaft stirring mechanism in the present invention.

[0036] Among them, 1. Box body; 2. Control system; 3. Feed hopper; 4. Temperature sensor; 5. Stirring motor; 6. Main shaft; 7. First stirring rod; 8. Drive gear; 9. Auxiliary shaft; 10. Second stirring rod; 11. Driven gear; 12. Vertical plate; 13. Screw motor; 14. Screw; 15. Sleeve; 16. Lifting seat; 17. Insulation layer; 18. Drive motor; 19. Bracket; 20. Shell; 21. Discharge pipe; 22. Solenoid valve; 23. Base body; 24. Lifting frame; 25. Universal wheel. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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.

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Reference Figure 1-Figure 3 The present invention provides an experimental device for measuring the specific heat capacity of solids by calorimetry, comprising:

[0040] A movable base, on which a box 1 and a control system 2 are installed, and a feed hopper 3 and a temperature sensor 4 are installed;

[0041] A double-shaft stirring mechanism is installed in the box 1;

[0042] A lifting mechanism is installed on a movable base, and a lifting seat 16 is installed at the lifting end of the lifting mechanism;

[0043] Rotary drive assembly, the rotary drive assembly is mounted on the lifting seat 16, and a bracket 19 is mounted on the output end of the rotary drive assembly;

[0044] The steel ball heating mechanism is mounted on the bracket 19, and a discharge assembly is installed at the bottom of the steel ball heating mechanism;

[0045] Among them, the discharge assembly, steel ball heating mechanism, rotary drive assembly, lifting mechanism, biaxial stirring mechanism and temperature sensor 4 are all electrically connected to the control system 2;

[0046] With such a configuration, the present invention can control the heating temperature of the steel balls and maintain a constant temperature through the steel ball heating mechanism, and control the discharge assembly to open through the control system 2, thereby realizing the rapid and automatic discharge of the steel balls into the box 1, which not only improves the experimental efficiency but also ensures that the initial conditions of the steel balls are consistent in each experiment, thereby improving the accuracy and repeatability of the experimental results;

[0047] The present invention can more effectively mix the room temperature water and the high temperature steel balls in the box 1 through the biaxial stirring mechanism, accelerate the heat transfer process, reduce the delay and error of temperature measurement, and more accurately capture the change of water temperature over time, providing reliable data support for the accurate calculation of the specific heat capacity of solids, thereby improving the experimental effect;

[0048] The present invention can conveniently adjust the height and position of the steel ball heating mechanism through the combined use of the lifting mechanism and the rotary drive assembly, so that the discharge assembly can be accurately aligned with the feed hopper 3, thereby improving the convenience and work efficiency of the experiment.

[0049] Further optimization scheme, the dual-axis stirring mechanism includes:

[0050] A stirring motor 5 is installed on the top of the box 1 and is electrically connected to the control system 2;

[0051] The main rotating shaft 6 is mounted on the output shaft of the stirring motor 5 through a coupling; the main rotating shaft 6 extends into the box body 1, and a plurality of first stirring rods 7 are mounted on the main rotating shaft 6;

[0052] A driving gear 8 is mounted on the main shaft 6;

[0053] A secondary rotating shaft 9, which is rotatably connected to the housing 1 and has a plurality of second stirring rods 10 mounted thereon;

[0054] Driven gear 11, driven gear 11 is mounted on auxiliary shaft 9, driven gear 11 is meshed with driving gear 8 for transmission;

[0055] With this arrangement, when in use, the control system 2 turns on the stirring motor 5, and the output shaft of the stirring motor 5 drives the main shaft 6 to rotate through the coupling; the first stirring rods 7 mounted on the main shaft 6 rotate accordingly, stirring the water in the box 1;

[0056] At the same time, the driving gear 8 on the main shaft 6 drives the driven gear 11 meshing with it to rotate. The driven gear 11 is installed on the secondary shaft 9, driving the secondary shaft 9 to rotate; several second stirring rods 10 installed on the secondary shaft 9 further stir the water body, forming a more complex fluid dynamics effect, ensuring that the water and the high-temperature steel balls can be mixed more quickly and evenly, thereby improving the accuracy and precision of the experiment.

[0057] To further optimize the solution, the lifting mechanism includes:

[0058] A vertical plate 12 is installed on the top surface of the movable base, and the vertical plate 12 is located on one side of the box body 1;

[0059] The lead screw motor 13 is mounted on the bottom of the side wall of the vertical plate 12 and is electrically connected to the control system 2;

[0060] The screw rod 14 is mounted on the side wall of the vertical plate 12 through a bearing, and one end of the screw rod 14 is axially connected to the output shaft of the screw motor 13 through a coupling;

[0061] The sliding sleeve 15 is arranged on the screw rod 14, and the lifting seat 16 is installed on the sliding sleeve 15;

[0062] With such an arrangement, when in use, the control system 2 controls the screw motor 13 to start, and the output shaft of the screw motor 13 drives the screw 14 to rotate through the coupling, thereby driving the sliding sleeve 15 and the lifting seat 16 to move up and down along the vertical plate 12 to achieve height adjustment of the steel ball heating mechanism.

[0063] To further optimize the solution, the outer wall of the box 1 is provided with an insulation layer 17 to reduce the heat exchange between the box 1 and the external environment, maintain the stability of the water temperature in the box 1, reduce heat loss during the experiment, and improve the accuracy and precision of the experiment.

[0064] To further optimize the solution, the rotation drive assembly includes a drive motor 18 electrically connected to the control system 2. The drive motor 18 is installed on the top of the lifting seat 16 through the motor seat, and the bracket 19 is installed on the output shaft of the drive motor 18; the control system 2 controls the start of the drive motor 18 to drive the bracket 19 to rotate, thereby realizing the adjustment of the position of the steel ball heating mechanism.

[0065] A further optimized solution is that the steel ball heating mechanism includes a shell 20 mounted on a bracket 19, a heater and an aluminum bottle are installed in the shell 20, the heater is electrically connected to the control system 2, a number of steel balls are provided in the aluminum bottle, the bottom of the aluminum bottle is fixedly connected and connected to the discharge assembly, and the discharge assembly extends out of the shell 20.

[0066] Further optimizing the solution, the discharge assembly includes a discharge pipe 21, and a solenoid valve 22 is installed on the discharge pipe 21, and the solenoid valve 22 is electrically connected to the control system 2;

[0067] The heater is started by the control system 2 to heat the steel balls in the aluminum bottle. The aluminum bottle has good thermal conductivity, which can ensure that the steel balls are heated evenly. When the steel balls reach the preset temperature, the discharge assembly is accurately aligned with the feed hopper 3 through the lifting mechanism and the rotary drive assembly. The control system 2 controls the solenoid valve 22 to open, and the steel balls in the discharge pipe 21 are discharged into the room temperature water in the box 1.

[0068] According to a further optimization scheme, the movable base includes a base body 23 , a lifting frame 24 is installed at the bottom of the base body 23 , universal wheels 25 are installed at the four corners of the bottom of the lifting frame 24 , and the box body 1 and the vertical plate 12 are both installed on the base body 23 .

[0069] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0070] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An experimental device for measuring the specific heat capacity of solids by calorimetry, characterized in that: include: A movable base, wherein a box (1) and a control system (2) are installed on the movable base, and a feed hopper (3) and a temperature sensor (4) are installed on the box (1); A double-shaft stirring mechanism, the double-shaft stirring mechanism being installed in the box (1); A lifting mechanism, the lifting mechanism being mounted on the movable base, and a lifting seat (16) being mounted on a lifting end of the lifting mechanism; A rotary drive assembly, the rotary drive assembly being mounted on the lifting seat (16), and a bracket (19) being mounted on an output end of the rotary drive assembly; A steel ball heating mechanism, the steel ball heating mechanism being mounted on the bracket (19), and a discharge assembly being mounted on the bottom of the steel ball heating mechanism; The discharge assembly, the steel ball heating mechanism, the rotary drive assembly, the lifting mechanism, the biaxial stirring mechanism and the temperature sensor (4) are all electrically connected to the control system (2).

2. The calorimetric experimental device for measuring specific heat capacity of solids according to claim 1, characterized in that: The biaxial stirring mechanism comprises: A stirring motor (5), the stirring motor (5) is installed on the top of the box (1), and the stirring motor (5) is electrically connected to the control system (2); A main rotating shaft (6), the main rotating shaft (6) is mounted on the output shaft of the stirring motor (5) through a coupling; the main rotating shaft (6) extends into the box (1), and a plurality of first stirring rods (7) are mounted on the main rotating shaft (6); a driving gear (8), wherein the driving gear (8) is mounted on the main shaft (6); A secondary rotating shaft (9), the secondary rotating shaft (9) is rotatably connected in the box body (1), and a plurality of second stirring rods (10) are installed on the secondary rotating shaft (9); A driven gear (11) is mounted on the auxiliary shaft (9), and the driven gear (11) is meshed with the driving gear (8) for transmission.

3. The calorimetric experimental device for measuring specific heat capacity of solids according to claim 1, characterized in that: The lifting mechanism comprises: A vertical plate (12), the vertical plate (12) being mounted on the top surface of the movable base, and the vertical plate (12) being located on one side of the box body (1); A screw motor (13), the screw motor (13) being mounted on the bottom of the side wall of the vertical plate (12), and the screw motor (13) being electrically connected to the control system (2); A screw rod (14), the screw rod (14) is mounted on the side wall of the vertical plate (12) through a bearing, and one end of the screw rod (14) is axially connected to the output shaft of the screw motor (13) through a coupling; A sliding sleeve (15) is slidably mounted on the screw rod (14), and the lifting seat (16) is mounted on the sliding sleeve (15).

4. The experimental device for measuring specific heat capacity of solids by calorimetry according to claim 1, characterized in that: The outer wall of the box body (1) is provided with a heat-insulating layer (17).

5. The experimental device for measuring specific heat capacity of solids by calorimetry according to claim 1, characterized in that: The rotary drive assembly includes a drive motor (18) electrically connected to the control system (2); the drive motor (18) is mounted on the top of the lifting seat (16) via a motor seat; and the bracket (19) is mounted on the output shaft of the drive motor (18).

6. The experimental device for measuring specific heat capacity of solids by calorimetry according to claim 1, characterized in that: The steel ball heating mechanism includes a shell (20) mounted on the bracket (19), a heater and an aluminum bottle are installed in the shell (20), the heater is electrically connected to the control system (2), a plurality of steel balls are arranged in the aluminum bottle, the bottom of the aluminum bottle is fixedly connected to and communicated with the discharge assembly, and the discharge assembly extends out of the shell (20).

7. The experimental device for measuring specific heat capacity of solids by calorimetry according to claim 6, characterized in that: The discharge assembly comprises a discharge pipe (21), a solenoid valve (22) is installed on the discharge pipe (21), and the solenoid valve (22) is electrically connected to the control system (2).

8. The experimental device for measuring specific heat capacity of solids by calorimetry according to claim 3, characterized in that: The movable base comprises a base body (23), a lifting frame (24) is installed at the bottom of the base body (23), universal wheels (25) are installed at the four corners of the bottom of the lifting frame (24), and the box (1) and the vertical plate (12) are both installed on the base body (23).

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