Organic liquid film drying dynamics experiment testing device

Abstract

The invention discloses an organic liquid film drying dynamics experiment testing device, and belongs to the technical field of drying devices. The device comprises a fresh air system, a circulating system, a drying chamber, a waste gas system and a control panel, drying in complex wind directions can be achieved by arranging the horizontal air valve and the vertical air valve, the quality can be measured in real time at the high temperature through the supporting rod connection design, the control panel is electrically connected with the electronic component, and parameters such as wind temperature, air volume, combustible gas concentration, vacuum degree and material quality can be collected in real time. The device can adjust parameters such as air temperature, air volume and vacuum degree in real time, can realize real-time quality measurement and complex air direction adjustment at high temperature, can realize functions of process control, automatic acquisition, display and storage of experimental data and the like, and can realize drying experiments of materials under complex conditions.

Description

Technical Field

[0001] The invention relates to an organic liquid film drying dynamics experimental testing device in the technical field of drying devices, in particular to an organic liquid film drying dynamics experimental testing device with automatic data acquisition. Background Art

[0002] The drying process of wet materials is a complex heat and mass transfer process that is widely used in various fields. For materials whose drying characteristics have not yet been clearly defined, it is usually necessary to conduct drying kinetic experiments to determine the changes in the moisture content and average temperature of the materials over time in order to guide the design of large-scale drying equipment. In traditional drying experiments, researchers need to regularly take out the materials together with the trays for measurement and record the weight, temperature and other key parameters of the materials. This manual recording method is not only time-consuming and labor-intensive, but also may affect the validity of the data due to the discontinuity in recording time. In addition, the drying rate of materials is faster at high temperatures, and the process of taking out and measuring leads to large errors in mass measurement, which in turn affects the research on the drying characteristics of materials and the formulation of the optimal drying process. Existing hot air drying kinetic experimental devices are difficult to achieve real-time measurement of material mass under conditions of high temperature and large air volume. Moreover, most existing experimental devices can only achieve drying in a single wind direction, and it is difficult to simulate the actual process to achieve drying under complex wind directions. Summary of the Invention

[0003] In order to solve the problems existing in the prior art, the present invention provides an organic liquid film drying dynamics experimental test device, which uses a sensor set outside the drying chamber to indirectly measure the change in material mass during the drying process through a support rod; according to the readings of the temperature sensor and flow meter, the fan frequency and heater power are adjusted in real time to ensure the stability of the material drying conditions; by setting horizontal and vertical air inlets, various wind direction conditions are simulated in accordance with the actual production process; and by connecting electronic instruments to a computer control panel, process control and automatic collection, display and storage of experimental data are realized.

[0004] The technical solution adopted by the present invention to solve the technical problem is: an organic liquid film drying dynamics experimental test device, the device includes a fresh air system, a circulation system, a drying chamber, an exhaust system and a control panel;

[0005] The fresh air system is connected to the circulation system, the circulation system is connected to the air inlet and outlet of the drying chamber, and the air outlet of the drying chamber is also connected to the exhaust system;

[0006] The drying chamber is provided with a loading platform and an air knife, the loading platform is provided at one end of a support rod, and the other end of the support rod passing through the drying chamber acts on a mass sensor, and the mass sensor is electrically connected to the control panel;

[0007] The drying chamber is provided with a horizontal air inlet and a vertical air inlet. The circulation system is connected to the horizontal air inlet through a horizontal air valve, and is connected to the vertical air inlet and the wind knife through a vertical air valve. The ratio of the vertical wind and the horizontal wind of the incoming air is controlled by the vertical air valve and the horizontal air valve to perform hot air drying in different wind directions.

[0008] Furthermore, the fresh air system includes a fresh air duct and a fresh air valve. One end of the fresh air duct is connected to the air, and the other end is connected to the circulating air duct. The fresh air valve is arranged on the fresh air duct.

[0009] Furthermore, the circulation system includes a circulating air duct, a circulating air valve, a fresh air fan, a mixed air flow meter, a mixed air temperature sensor, an electric heater, a vertical air valve, and a horizontal air valve; the air duct after the electric heater is divided into two branches, a vertical air duct and a horizontal air duct. The vertical air duct is connected to the vertical air inlet above the drying chamber after passing through the vertical air valve, and the horizontal air duct is connected to the horizontal air inlet of the drying chamber after passing through the horizontal air valve; the circulating air valve, the fresh air fan, the mixed air flow meter, the mixed air temperature sensor, and the electric heater are connected and arranged in sequence along the wind direction.

[0010] Furthermore, the loading platform in the drying chamber faces the wind knife, and a uniformly distributed wind plate is provided at the air outlet of the wind knife; a hot air temperature sensor, a vacuum meter, and a combustible gas concentration detector are also provided in the drying chamber.

[0011] Furthermore, the exhaust system is provided with an exhaust air duct, an exhaust air valve, an induced draft fan, an exhaust flow meter, and an exhaust temperature sensor in sequence along the direction.

[0012] Furthermore, the control panel is electrically connected to the fresh air fan, mixed air flow meter, mixed air temperature sensor, electric heater, hot air temperature sensor, vacuum meter, combustible gas concentration detector, induced draft fan, exhaust gas flow meter, and exhaust gas temperature sensor.

[0013] Furthermore, the hot air temperature sensor, mixed air flow meter, and mixed air temperature sensor transmit the air temperature and air volume information to the control panel, which controls the air volume by adjusting the frequency of the fresh air fan and the induced draft fan, and controls the air temperature by adjusting the power of the electric heater.

[0014] The beneficial effects of the present invention are as follows: the material quality of the device can be measured in real time at high temperatures, and the problem of the mass sensor being unable to work at high temperatures is avoided by extending the support rod connected to the loading platform outside the drying chamber and connecting it to the quality sensor. The wind temperature and air volume information are transmitted to the control panel through the hot air temperature sensor, the mixed air flow meter, and the mixed air temperature sensor. The power of the fresh air fan, the induced draft fan, and the electric heater are adjusted through the control panel to control the air volume and air temperature, thereby achieving controllable wind temperature and air volume in the drying chamber. The device controls the ratio of vertical and horizontal air intakes through vertical air valves and horizontal air valves to achieve hot air with different wind directions in the drying chamber to dry the material. The device adjusts the vacuum degree in the drying chamber through the circulation air valve, the fresh air fan, the vertical air valve, the horizontal air valve, the exhaust air valve, and the induced draft fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 Schematic diagram of the wind uniforming plate structure.

[0017] Shown in the figure: 1. Fresh air duct; 2. Circulating air duct; 3. Drying chamber; 4. Exhaust air duct; 5. Control panel; 6. Fresh air valve; 7. Circulating air valve; 8. Fresh air fan; 9. Mixed air flow meter; 10. Mixed air temperature sensor; 11. Electric heater; 12. Vertical air valve; 13. Horizontal air valve; 14. Air knife; 15. Drying chamber door; 16. Hot air temperature sensor; 17. Vacuum gauge; 18. Combustible gas concentration detector; 19. Loading platform; 20. Support rod; 21. Mass sensor; 22. Exhaust air valve; 23. Induced draft fan; 24. Exhaust air flow meter; 25. Exhaust gas temperature sensor. DETAILED DESCRIPTION

[0018] The present invention further illustrates the composition and connection relationship of the device of the present invention with reference to the accompanying drawings.

[0019] like Figure 1 As shown, the organic liquid film drying dynamics experimental test device has a fresh air system, a circulation system, a drying chamber 3, an exhaust system and a control panel 5;

[0020] The fresh air system is connected to the circulation system, the circulation system is connected to the air inlet and outlet of the drying chamber 3, and the air outlet of the drying chamber 3 is also connected to the exhaust system;

[0021] A loading platform 19 and an air knife 14 are provided in the drying chamber 3. The loading platform 19 faces the air knife 14. The loading platform 19 is provided at one end of a support rod 20. The other end of the support rod 20 passes through the drying chamber 3 and acts on a mass sensor 21. The mass sensor 21 is electrically connected to the control panel 5.

[0022] The drying chamber 3 is provided with a horizontal air inlet and a vertical air inlet. The circulation system is connected to the horizontal air inlet through a horizontal air valve 13, and is connected to the vertical air inlet and the wind knife 14 through a vertical air valve 12. The ratio of the vertical wind and the horizontal wind of the incoming air is controlled by the vertical air valve 12 and the horizontal air valve 13 to perform hot air drying in different wind directions.

[0023] In the fresh air system, the left end of the fresh air duct 1 is connected to the air, where a fresh air valve 6 is provided, and the other end is connected to the circulating air duct 2.

[0024] The circulation system includes a circulation air duct 2, a circulation air valve 7, a fresh air fan 8, a mixed air flow meter 9, a mixed air temperature sensor 10, an electric heater 11, a vertical air valve 12, and a horizontal air valve 13.

[0025] The air duct above the electric heater 11 is divided into two directions: left and upward. The upward air duct passes through the vertical air valve 12 and is connected to the vertical air inlet above the drying chamber 3. The left air duct passes through the horizontal air valve 13 and is connected to the horizontal air inlet of the drying chamber 3.

[0026] The circulating air valve 7, the fresh air fan 8, the mixed air flow meter 9, the mixed air temperature sensor 10, and the electric heater 11 are connected and arranged in sequence along the wind direction; the fresh air duct 1 is connected between the circulating air valve 7 and the fresh air fan 8.

[0027] The drying chamber 3 includes an air knife 14, a drying chamber door 15, a hot air temperature sensor 16, a vacuum gauge 17, a combustible gas concentration detector 18, a loading platform 19, a support rod 20, and a mass sensor 21. The drying chamber 3 is connected to the circulating air duct 2 upward through the air knife 14 and directly connected to the circulating air duct 2 to the right.

[0028] A uniformly distributed air plate is provided at the air outlet of the wind knife 14; a glass window is provided on the drying chamber door 15; a hot air temperature sensor 16 is provided near the bottom of the wind knife 14;

[0029] In the exhaust system, an exhaust duct 4, an exhaust air valve 22, an induced draft fan 23, an exhaust flow meter 24, and an exhaust temperature sensor 25 are arranged in sequence along the wind direction; the exhaust duct 4 is connected to the drying chamber 3 to the right and to the circulating air duct 2 downward.

[0030] The control panel 5 and electronic components (fresh air fan 8, mixed air flow meter 9, mixed air temperature sensor 10, electric heater 11, hot air temperature sensor 16, vacuum gauge 17, combustible gas concentration detector 18, induced draft fan 23, exhaust gas flow meter 24, exhaust gas temperature sensor 25) are all electrically connected;

[0031] The material quality of the organic liquid film drying dynamics experimental test device can be measured in real time at high temperature. By extending the support rod 20 connected to the sample stage 19 outside the drying chamber 3 and connecting it to the mass sensor 21, the problem that the mass sensor 21 cannot work at high temperature is avoided; the wind temperature and air volume in the drying chamber are controllable, specifically through the hot air temperature sensor 16, the mixed air flow meter 9, and the mixed air temperature sensor 10 to transmit the wind temperature and air volume information to the control panel 5, and the control panel 5 adjusts the power of the fresh air fan 8, the induced draft fan 23 and the electric heater 11 to control the air volume and air temperature.

[0032] The hot air in the drying chamber 3 flows evenly, which is specifically achieved by an air knife 14 equipped with a uniform air distribution plate; the experimental device can dry materials with hot air in different wind directions, which is achieved by controlling the ratio of vertical wind and horizontal wind of the incoming air through the vertical air valve 12 and the horizontal air valve 13; the experimental device can adjust the vacuum degree in the drying chamber 3, which is achieved by jointly adjusting the circulating air valve 7, the fresh air fan 8, the vertical air valve 12, the horizontal air valve 13, the exhaust air valve 22, and the induced draft fan 23.

[0033] Working methods

[0034] When working with the above technical solution, the following steps are taken:

[0035] 1. Turn on the power and adjust the valves as needed, so that: the fresh air valve 6 is half-open, the horizontal air valve 13 is closed, the vertical air valve 12, the exhaust air valve 22, and the circulating air valve 7 are fully open, and check and make sure that the values ​​of each instrument remain stable;

[0036] 2. Turn on the fresh air fan 8 and the induced draft fan 23, and set the fan power output;

[0037] 3. Turn on the heating switch of the electric heater 11, set the power value, and the dryer starts to heat up;

[0038] 4. Adjust the power of the fresh air fan 8, the induced draft fan 23 and the electric heater 11 so that the air temperature and air volume in the drying chamber meet the predetermined conditions;

[0039] 5. When all parameters in the drying chamber 3 remain basically stable, prepare a dry, smooth, clean glass plate and evenly coat the prepared material on the glass plate;

[0040] 6. Open the drying chamber door 15 and quickly place the coated glass plate onto the loading platform in the drying chamber. Close the drying chamber door 15 to begin drying. Adjust the fan and heater power in real time to maintain constant experimental conditions. Monitor the drying process parameters in real time. When the mass sensor reading is basically stable, remove the glass plate and the drying cycle is complete.

[0041] The above embodiments are only used to illustrate the present invention. Any equivalent transformations and improvements based on the technical solution of the present invention should not be excluded from the protection scope of the present invention.

Claims

1. An organic liquid film drying dynamics experimental test device, characterized by: The device includes a fresh air system, a circulation system, a drying chamber (3), an exhaust system and a control panel (5); The fresh air system is connected to the circulation system, the circulation system is connected to the air inlet and the air outlet of the drying chamber (3), and the air outlet of the drying chamber (3) is also connected to the exhaust system; A loading platform (19) and an air knife (14) are provided in the drying chamber (3); the loading platform (19) is provided at one end of a support rod (20); the other end of the support rod (20) passes through the drying chamber (3) and acts on a mass sensor (21); and the mass sensor (21) is electrically connected to the control panel (5); The drying chamber (3) is provided with a horizontal air inlet and a vertical air inlet. The circulation system is connected to the horizontal air inlet via a horizontal air valve (13), and is connected to the vertical air inlet and the air knife (14) via a vertical air valve (12). The ratio of the vertical air to the horizontal air of the air intake is controlled by the vertical air valve (12) and the horizontal air valve (13), so that hot air drying with different wind directions is performed.

2. The organic liquid film drying dynamics experimental test device according to claim 1, characterized in that: The fresh air system comprises a fresh air duct (1) and a fresh air valve (6); one end of the fresh air duct (1) is connected to the air, and the other end is connected to the circulating air duct (2); the fresh air valve (6) is provided on the fresh air duct (1).

3. The organic liquid film drying dynamics experimental test device according to claim 1, characterized in that: The circulation system comprises a circulation air duct (2), a circulation air valve (7), a fresh air blower (8), a mixed air flow meter (9), a mixed air temperature sensor (10), an electric heater (11), a vertical air valve (12), and a horizontal air valve (13); the air duct after the electric heater (11) is divided into two branches, a vertical air duct and a horizontal air duct; the vertical air duct is connected to the vertical air inlet above the drying chamber (3) after passing through the vertical air valve (12), and the horizontal air duct is connected to the horizontal air inlet of the drying chamber (3) after passing through the horizontal air valve (13); the circulation air valve (7), the fresh air blower (8), the mixed air flow meter (9), the mixed air temperature sensor (10), and the electric heater (11) are connected and arranged in sequence along the wind direction.

4. The organic liquid film drying dynamics experimental test device according to claim 1, characterized in that: The loading platform (19) in the drying chamber (3) faces the air knife (14), and a uniformly distributed air plate is provided at the air outlet of the air knife (14); a hot air temperature sensor (16), a vacuum meter (17), and a combustible gas concentration detector (18) are also provided in the drying chamber (3).

5. The organic liquid film drying dynamics experimental test device according to claim 1, characterized in that: The exhaust gas system is provided with an exhaust gas duct (4), an exhaust gas air valve (22), an induced draft fan (23), an exhaust gas flow meter (24), and an exhaust gas temperature sensor (25) in sequence along the wind direction.

6. The organic liquid film drying dynamics experimental test device according to claim 1, characterized in that: The control panel (5) is electrically connected to the fresh air fan (8), the mixed air flow meter (9), the mixed air temperature sensor (10), the electric heater (11), the hot air temperature sensor (16), the vacuum meter (17), the combustible gas concentration detector (18), the induced draft fan (23), the exhaust gas flow meter (24), and the exhaust gas temperature sensor (25).

7. The organic liquid film drying dynamics experimental test device according to claim 1, characterized in that: The hot air temperature sensor (16), the mixed air flow meter (9), and the mixed air temperature sensor (10) transmit the air temperature and air volume information to the control panel (5). The control panel (5) adjusts the power of the fresh air fan (8) and the induced draft fan (23) to control the air volume, and adjusts the power of the electric heater (11) to control the air temperature.

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