Chemical thermal safety reaction calorimeter for teaching

Abstract

The utility model relates to the technical field of reaction calorimeters, and discloses a chemical thermal safety reaction calorimeter for teaching, which comprises a thermostat, the thermostat consists of a heating system, a water bath and a control system, a processing table is fixedly mounted at the lower end of the thermostat, two groups of electronic scales are arranged on the side edge of the processing table, and liquid bottles are arranged at the upper ends of the electronic scales. Raw materials in a liquid bottle are read through an electronic scale, so that the number of the raw materials added into the reaction kettle from the interior of the liquid bottle is better controlled, a cleaning structure comprises a rotating rod, a reciprocating screw rod, a sleeve, a sliding groove, a connecting block and a scraper, and due to the fact that the rotating speed of a hollow shaft is increased, an extension spring on the inner wall of a notch is lengthened by centrifugal force; meanwhile, an extension spring has kinetic energy of inward rebounding, at the moment, the extension spring drives a T-shaped sliding rod to move outwards, and the T-shaped sliding rod moves outwards to drive a scraping plate to move to make contact with the inner wall of the reaction kettle, so that the scraping plate can repeatedly scrape the inner wall of the reaction kettle.

Description

Technical Field

[0001] The utility model relates to the technical field of reaction calorimeters, in particular to a chemical thermal safety reaction calorimeter for teaching. Background Art

[0002] Chemical engineering is the technology of using chemical methods to change the composition and structure of substances or to synthesize new substances. All of them belong to chemical production technology. The existing reaction tank can stir the slurry or emulsion polymerization reaction liquid through the internal stirring rotor during the test process to complete the chemical reaction.

[0003] For example, the publication number CN217410793U discloses a reaction calorimeter tank for chemical safety experimental equipment. The device drives the bearing seat to rotate by rotating the rotating shaft, so that the reciprocating screw can continuously move left and right when the bearing seat rotates, so that the moving box can continuously move left and right, so that the reaction liquid inside the tank can be shaken, and the reaction liquid can be fully mixed when working with the stirring rotor, so that the reaction rate of the reaction liquid can be accelerated.

[0004] However, when in use, the reaction structure can only shake the raw materials inside the reaction tank, and cannot intuitively observe the operating status inside the reaction tank, resulting in poor stirring effect, and cannot heat the raw materials added to the reaction tank, resulting in low temperature affecting the chemical reaction effect; in view of this, we propose a chemical thermal safety reaction calorimeter for teaching. Utility Model Content

[0005] The utility model aims to provide a chemical engineering thermal safety reaction calorimeter for teaching, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a chemical thermal safety reaction calorimeter for teaching, comprising a thermostat, a processing table is fixedly installed at the lower end of the thermostat, two sets of electronic scales are arranged on the side of the processing table, a liquid bottle is arranged at the upper end of the electronic scale, a cavity is opened at the upper end of the thermostat, two sets of temperature measuring platinum resistors are fixedly installed on the side walls of the cavity from top to bottom, and a processing cavity is opened inside the thermostat and the processing table;

[0007] A reaction kettle is fixedly installed on the inner wall of the processing chamber, a card slot is opened inside the processing table, a magnetic stirring motor is fixedly installed on the inner wall of the card slot, two groups of peristaltic pumps are fixedly installed on the side wall of the processing table through a support plate, a liquid pipe is fixedly installed on the lower end of the peristaltic pump, the lower end of the liquid pipe passes through the liquid bottle, one end of the preheating tube is fixedly installed on the lower end of the peristaltic pump, and the other end of the preheating tube is fixedly connected to the side wall of the reaction kettle;

[0008] The output shaft of the magnetic stirring motor passes through the inner wall of the reactor and is fixedly installed with a hollow shaft, stirring blades are fixedly installed on both sides of the hollow shaft, a through opening is opened at the upper end of the reactor, and a cleaning structure is arranged inside the reactor.

[0009] Preferably, the cleaning structure includes a rotating rod rotatably connected to the inner wall of the hollow shaft, reciprocating screws are fixedly mounted on the surfaces of both ends of the rotating rod, a sleeve is threadedly connected to the surface of the reciprocating screw, four groups of sliding grooves are provided at the upper and lower ends of the hollow shaft, one end of a connecting block is fixedly mounted on four sides of the sleeve, a scraper is fixedly mounted on the other end of the connecting block, and a movable structure is arranged inside the connecting block.

[0010] Preferably, the movable structure includes a notch opened on the side wall of the connecting block, one end of a tension spring is fixedly installed on the inner wall of the notch, a T-shaped slide bar is fixedly installed on the other end of the tension spring, and the side wall of the T-shaped slide bar is fixedly connected to the side wall of the scraper.

[0011] Preferably, one end of the scraper away from the connecting block is configured as an arc-shaped structure.

[0012] Preferably, a rotating motor is fixedly installed on the side wall of the reactor, the output shaft of the rotating motor passes through the inner wall of the side wall of the reactor and is fixedly installed with a rotating rod, a first bevel gear is fixedly installed on the end of the rotating rod, and a second bevel gear is fixedly installed on the surface of the rotating rod.

[0013] Preferably, an observation port is provided on the front side of the processing table, and an observation window is fixedly installed on the inner wall of the observation port.

[0014] Compared with the prior art, the utility model provides a chemical thermal safety reaction calorimeter for teaching, which has the following beneficial effects:

[0015] 1. The chemical heat safety reaction calorimeter used for teaching is convenient for improving the processing efficiency during chemical reactions by setting up a thermostat, a processing table, an electronic scale, a liquid bottle, a processing chamber, a reactor, a magnetic stirring motor and other devices. The reactor can be accurately controlled at the set temperature by setting a thermostat, and the temperature of the thermostat can be read in real time to control the chemical reaction. The operating status in the reactor can be intuitively observed by setting an observation window, and a magnetic stirring motor with controllable speed is set at the lower end of the reactor. The output shaft of the magnetic stirring motor in the reactor can be controlled by computer software to run at the set speed, thereby further improving the use effect of the device.

[0016] 2. The chemical thermal safety reaction calorimeter used for teaching is provided with a cleaning structure and a moving structure so as to facilitate the cleaning of the raw materials on the inner wall of the reactor. The user can start the magnetic stirring motor to drive the hollow shaft to rotate, thereby driving the scraper to move left and right, and at the same time start the rotating motor to drive the rotating rod to rotate, so that the sleeve moves up and down on the surface of the reciprocating screw, so that the scraper can also move up and down during the rotation cleaning to scrape off the raw materials attached to the inner wall of the reactor, thereby improving the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the reactor of the utility model;

[0019] Figure 3 This is a schematic diagram of the sectional three-dimensional structure of the internal part of the reactor of the utility model;

[0020] Figure 4 It is a partial cross-sectional three-dimensional structural schematic diagram of the rotating rod of the utility model;

[0021] Figure 5 It is a partial cross-sectional three-dimensional structural schematic diagram of the connection block of the utility model.

[0022] In the figure: 1. thermostat; 2. processing table; 5. electronic scale; 6. liquid bottle; 8. processing chamber; 9. reactor; 10. magnetic stirring motor; 11. peristaltic pump; 12. preheating tube; 13. through port; 3. cleaning structure; 4. moving structure; 31. rotating rod; 32. reciprocating screw rod; 33. sleeve; 34. slide groove; 35. connecting block; 36. scraper; 41. notch; 42. tension spring; 43. T-shaped slide rod; 15. observation port; 16. observation window; 17. rotating motor; 18. rotating rod; 19. first bevel gear; 20. second bevel gear; 14. hollow shaft. DETAILED DESCRIPTION

[0023] like Figure 1-Figure 5As shown, the utility model provides a technical solution: a chemical thermal safety reaction calorimeter for teaching, including a thermostat 1, the thermostat 1 is composed of a heating system, a water bath and a control system, which can accurately control the reactor 9 at the set temperature, and read the temperature of the thermostat 1 in real time to improve the processing effect, a processing table 2 is fixedly installed at the lower end of the thermostat 1, two sets of electronic scales 5 are arranged on the side of the processing table 2, and a liquid bottle 6 is arranged on the upper end of the electronic scale 5. The raw material in the liquid bottle 6 is read by the electronic scale 5, so that the amount of raw material added from the liquid bottle 6 to the reactor 9 can be more accurate. The thermostat 1 has a cavity at the top, and two groups of temperature measuring platinum resistors are fixedly installed on the side walls of the cavity from top to bottom. A processing cavity 8 is opened inside the thermostat 1 and the processing table 2, and a reaction kettle 9 is fixedly installed on the inner wall of the processing cavity 8. A card slot is opened inside the processing table 2, and a magnetic stirring motor 10 is fixedly installed on the inner wall of the card slot. The output shaft of the magnetic stirring motor 10 in the reaction kettle 9 can be controlled by computer software to run at a set speed, thereby further improving the mixing effect of the device. Two groups of peristaltic pumps 11 are fixedly installed on the side walls of the processing table 2 through a support plate. The lower end of the peristaltic pump 11 A liquid-passing pipe is fixedly installed, and the lower end of the liquid-passing pipe passes through the liquid bottle 6. One end of a preheating pipe 12 is fixedly installed at the lower end of a peristaltic pump 11, and the other end of the preheating pipe 12 is fixedly connected to the side wall of the reactor 9. The peristaltic pump 11 is used to extract the raw materials in the liquid bottle 6 and move them through the preheating pipe 12 to add them into the reactor 9. The preheating pipe 12 is used to heat the raw materials in the liquid bottle 6. The output shaft of the magnetic stirring motor 10 passes through the inner wall of the reactor 9 and is fixedly installed with a hollow shaft 14. Stirring blades are fixedly installed on both sides of the hollow shaft 14. A liquid-passing pipe 12 is fixedly installed at the upper end of the reactor 9. Port 13, a cleaning structure 3 is arranged inside the reactor 9. When the raw materials inside the reactor 9 react, the operating status inside the reactor 9 can be intuitively observed through the observation port 15. Combined with the data curve and intuitive observation, chemical engineering students can intuitively learn the thermal safety knowledge related to chemical reactions, intuitively observe the changes in the properties of the reactions, and intuitively see the direct relationship between the feed changes and the reaction temperature through the data. Professional data indicators related to chemical safety can be obtained through data analysis. One end of a liquid outlet pipe is also arranged on the side wall of the reactor 9, and the other end of the liquid outlet pipe is located outside the processing table 2.

[0024] Specifically, the cleaning structure 3 of the technical solution of the utility model includes: a rotating rod 31, a reciprocating screw rod 32, a sleeve 33, a slide groove 34, a connecting block 35, and a scraper 36.

[0025] In one embodiment of the utility model, a cleaning structure 3 and a moving structure 4 are provided to facilitate cleaning of the raw materials on the inner wall of the reactor 9. When the inner wall of the reactor 9 needs to be cleaned, the user can increase the power of the magnetic stirring motor 10 to increase the rotation speed of the hollow shaft 14. Since the rotation speed of the hollow shaft 14 is increased, the tension spring 42 on the inner wall of the slot 41 will be stretched by the centrifugal force, and the tension spring 42 will have the kinetic energy to rebound inward. At this time, the tension spring 42 drives the T-shaped slide bar 43 to move outward, and the outward movement of the T-shaped slide bar 43 drives the scraper 36 to move and contact the inner wall of the reactor 9, so that the scraper 36 can repeatedly scrape the inner wall of the reactor 9.

[0026] At the same time, the user can start the rotating motor 17 to work, and the output shaft of the rotating motor 17 drives the rotating rod 18 on its surface to rotate, and the first bevel gear 19 on its surface is driven to rotate by the rotation of the rotating rod 18, and the second bevel gear 20 meshing with it is driven to rotate by the rotation of the first bevel gear 19, and the rotating rod 31 inside it is driven to rotate by the rotation of the second bevel gear 20, and the reciprocating screw 32 on its surface is driven to rotate by the rotation of the rotating rod 31, and the four groups of connecting blocks 35 on its surface are driven to move up and down on the inner wall of the slide groove 34 by the rotation of the reciprocating screw 32. The movement of the connecting block 35 will also drive the scraper 36 to move, so that the scraper 36 can also move up and down to scrape the raw materials attached to the inner wall of the reactor 9 when rotating for cleaning, thereby improving the use effect of the device.

[0027] Please continue reading Figure 1-Figure 5 The cleaning structure 3 includes a rotating rod 31 rotatably connected to the inner wall of the hollow shaft 14, and a reciprocating screw rod 32 is fixedly installed on the surface of both ends of the rotating rod 31. A sleeve 33 is threadedly connected to the surface of the reciprocating screw rod 32. Four sets of sliding grooves 34 are opened at the upper and lower ends of the hollow shaft 14. One end of a connecting block 35 is fixedly installed on the four sides of the sleeve 33. A scraper 36 is fixedly installed on the other end of the connecting block 35. A moving structure 4 is arranged inside the connecting block 35. The moving structure 4 includes a notch 41 opened on the side wall of the connecting block 35. One end of a tension spring 42 is fixedly installed on the inner wall of the notch 41. A T-shaped slide bar 43 is fixedly installed on the other end of the extension spring 42, and the side wall of the T-shaped slide bar 43 is fixedly connected to the side wall of the scraper 36. The end of the scraper 36 away from the connecting block 35 is set as an arc structure. A rotating motor 17 is fixedly installed on the side wall of the reactor 9. The output shaft of the rotating motor 17 passes through the inner wall of the side wall of the reactor 9 and is fixedly installed with a rotating rod 18. A first bevel gear 19 is fixedly installed on the end of the rotating rod 18, and a second bevel gear 20 is fixedly installed on the surface of the rotating rod 31. An observation port 15 is opened on the front of the processing table 2, and an observation window 16 is fixedly installed on the inner wall of the observation port 15.

[0028] During operation, the user can control the peristaltic pump 11 to extract the raw materials in the liquid bottle 6 and move them through the preheating tube 12 to add them into the reactor 9, and then control the output shaft of the magnetic stirring motor 10 in the reactor 9 to run at the set speed. During the chemical reaction, the operating status in the reactor 9 can be intuitively observed through the observation port 15. After the processing is completed, the liquid is discharged through the liquid outlet pipe, and then the power of the magnetic stirring motor 10 is increased to increase the speed of the hollow shaft 14. At this time, the tension spring 42 on the inner wall of the notch 41 will be stretched by the centrifugal force. At this time, the tension spring 42 drives the T-shaped slide bar 43 to move outward, and the outward movement of the T-shaped slide bar 43 drives the scraper 36 to move and contact the inner wall of the reactor 9, so that the scraper 36 can repeatedly scrape the inner wall of the reactor 9. At the same time, the rotating motor 17 is started to work, and the output shaft of the rotating motor 17 is rotated to drive the rotating rod 18 on its surface to rotate, and the first bevel gear 19 on its surface is rotated by the rotation of the rotating rod 18, and the second bevel gear 20 meshing with it is rotated by the rotation of the first bevel gear 19, and the rotating rod 31 inside it is rotated by the rotation of the second bevel gear 20, and the reciprocating screw 32 on its surface is rotated by the rotation of the rotating rod 31, and the four groups of connecting blocks 35 on its surface are moved up and down on the inner wall of the slide groove 34 by the rotation of the reciprocating screw 32. The movement of the connecting block 35 will also drive the scraper 36 to move, so that the scraper 36 can also move up and down to scrape the raw materials attached to the inner wall of the reactor 9 when rotating for cleaning, thereby improving the processing effect of the device.

[0029] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A chemical thermal safety reaction calorimeter for teaching purposes, comprising a thermostat (1), a processing table (2) being fixedly mounted at the lower end of the thermostat (1), characterized in that: Two sets of electronic scales (5) are arranged on the side of the processing table (2), and a liquid bottle (6) is arranged on the upper end of the electronic scale (5). A cavity is opened on the upper end of the thermostat (1), and two sets of temperature measuring platinum resistors are fixedly installed on the side walls of the cavity from top to bottom, respectively. A processing cavity (8) is opened inside the thermostat (1) and the processing table (2); A reaction kettle (9) is fixedly mounted on the inner wall of the processing chamber (8); a slot is provided inside the processing table (2); a magnetic stirring motor (10) is fixedly mounted on the inner wall of the slot; two groups of peristaltic pumps (11) are fixedly mounted on the side wall of the processing table (2) through a support plate; a liquid passage tube is fixedly mounted on the lower end of the peristaltic pump (11); the lower end of the liquid passage tube passes through the liquid bottle (6); one end of a preheating tube (12) is fixedly mounted on the lower end of the peristaltic pump (11); the other end of the preheating tube (12) is fixedly connected to the side wall of the reaction kettle (9); The output shaft of the magnetic stirring motor (10) passes through the inner wall of the reaction kettle (9) and is fixedly mounted with a hollow shaft (14), stirring blades are fixedly mounted on both sides of the hollow shaft (14), a through opening (13) is opened at the upper end of the reaction kettle (9), and a cleaning structure (3) is arranged inside the reaction kettle (9) for removing residual raw materials on the inner wall of the reaction kettle (9).

2. A chemical thermal safety reaction calorimeter for teaching according to claim 1, characterized in that: The cleaning structure (3) comprises a rotating rod (31) rotatably connected to the inner wall of the hollow shaft (14); reciprocating screws (32) are fixedly mounted on the surfaces of both ends of the rotating rod (31); a sleeve (33) is threadedly connected to the surface of the reciprocating screw (32); four groups of sliding grooves (34) are provided at both upper and lower ends of the hollow shaft (14); one end of a connecting block (35) is fixedly mounted on four sides of the sleeve (33); a scraper (36) is fixedly mounted on the other end of the connecting block (35); and a movable structure (4) is arranged inside the connecting block (35).

3. A chemical thermal safety reaction calorimeter for teaching according to claim 2, characterized in that: The movable structure (4) comprises a notch (41) formed on the side wall of the connecting block (35); one end of a tension spring (42) is fixedly mounted on the inner wall of the notch (41); a T-shaped slide bar (43) is fixedly mounted on the other end of the tension spring (42); and the side wall of the T-shaped slide bar (43) is fixedly connected to the side wall of the scraper (36).

4. A chemical thermal safety reaction calorimeter for teaching according to claim 3, characterized in that: One end of the scraper (36) away from the connecting block (35) is configured as an arc-shaped structure.

5. A chemical thermal safety reaction calorimeter for teaching according to claim 4, characterized in that: A rotating motor (17) is fixedly mounted on the side wall of the reaction kettle (9); an output shaft of the rotating motor (17) passes through the inner wall of the side wall of the reaction kettle (9) and is fixedly mounted with a rotating rod (18); a first bevel gear (19) is fixedly mounted on the end of the rotating rod (18); and a second bevel gear (20) is fixedly mounted on the surface of the rotating rod (31).

6. The chemical thermal safety reaction calorimeter for teaching according to claim 1, characterized in that: An observation port (15) is provided on the front of the processing table (2), and an observation window (16) is fixedly mounted on the inner wall of the observation port (15).

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