Carbon dioxide gas generation measurement device

Abstract

The utility model relates to the technical field of food determination test, and in particular to a device for determining the amount of carbon dioxide gas generated. A first bottle mouth is provided on the top of a gas generating flask, and a second bottle mouth which is inclined is provided on the front side thereof. A first rubber plug is movably provided in the first bottle mouth, and a second rubber plug is movably provided in the second bottle mouth. A dropping funnel is provided on one side of a condenser. Automatic stirring can be achieved through a heat-collecting magnetic stirrer, so that the convenience of use is improved, and the temperature can be kept constant, so that the determination accuracy is improved. By passing the liquid outlet end of the dropping funnel and the air inlet end of the condenser through the first rubber plug, an installation connection with the gas generating flask is formed, so that frequent disassembly and separation are not required, so that the structural stability and sealing degree are improved, leakage is prevented, and the test reliability is improved. Water and a sample are added to the gas generating flask from the second bottle mouth, and the second bottle mouth is sealed by the second rubber plug, so that the effect of rapid feeding can be achieved, and the determination accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of food determination test, in particular to a device for determining the amount of carbon dioxide gas generated. Background Art

[0002] At present, the production of baking powder requires the measurement of its carbon dioxide gas generation. According to the carbon dioxide gas generation measurement device mentioned in GB1886.245-2016 "National Food Safety Standard Food Additive Compound Leavening Agent", the specific measurement method is: rotate the three-way valve to make the device pass through the atmosphere, raise and lower the level bottle to move the internal displacement solution, and adjust the scale of the gas measuring tube to zero. Pass cooling water through the condenser tube, rotate the three-way valve to connect the condenser tube with the gas measuring tube. Remove the round-bottomed bottle for gas generation, add 100mL of water, and wrap about 1g of sample wrapped in soft paper, accurate to 0.0002g. Put it into the round-bottomed bottle for gas generation, quickly connect the flask, place it in a 75℃ water bath to heat, lower the level bottle, add 20mL of hydrochloric acid solution from the dropping funnel, immediately close the valve of the dropping funnel, and continue to shake the gas generating bottle slowly. After 3 minutes, adjust the position of the level bottle appropriately. When the liquid levels of the gas burette and the level bottle are balanced, read the liquid level scale V1 (mL) and the thermometer reading, and measure the atmospheric pressure at the same time. Find the calibration values ​​of atmospheric pressure and vapor pressure according to Appendix B and Appendix C. Perform a blank test according to the above steps. In the blank test, except that no sample is added, other operations and the types and amounts of reagents added (except the standard titration solution) are the same as those in the determination test.

[0003] However, the device in the national standard has the following shortcomings: First, the gas generating bottle needs to be shaken slowly during use. Since the gas generating bottle is placed in a 75°C water bath and is connected to a condensation device and a dropping funnel, the operation is very inconvenient and can easily cause the connection to loosen, resulting in gas leakage that affects the measurement results; second, the gas generating round-bottom flask needs to be removed for the sample to be put in and the flask needs to be quickly connected. Not only is the operation requirement high, but the bigger problem is that for some compound leavening agent samples, such as baking powder, which is composed of baking soda and acidic materials, the acidic and alkaline components dissolve in water at the same time when in contact with water, reacting to release carbon dioxide, resulting in part of the gas being unable to be collected from the process of feeding to the completion of the device connection, resulting in low measurement results; third, the gas generating round-bottom flask and the dropping funnel need to be frequently installed, connected, and disassembled and separated, thereby reducing the stability and sealing of the connection structure between the gas generating round-bottom flask and the dropping funnel, which is prone to leakage and leads to test failure. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a device for measuring the amount of carbon dioxide gas generated which is easy to use, has a high degree of sealing and high measurement accuracy.

[0005] The technical solution adopted by the utility model is:

[0006] A device for measuring the amount of carbon dioxide gas generated comprises a gas generating flask, a condenser, a gas measuring tube and a level bottle which are connected in sequence, and also comprises a heat-collecting magnetic stirrer. The gas generating flask is arranged in the heat-collecting magnetic stirrer. The top of the gas generating flask is provided with a first bottle mouth, and the front side thereof is provided with a second bottle mouth which is arranged in an inclined manner. A first rubber plug is movably provided in the first bottle mouth, and a second rubber plug is movably provided in the second bottle mouth. A dropping funnel is provided on one side of the condenser, and the liquid outlet end of the dropping funnel and the air inlet end of the condenser are both penetrated by the first rubber plug.

[0007] Preferably, a third rubber plug is movably provided in the top pipe opening of the gas measuring tube, the first glass tube and the thermometer are penetrated through the third rubber plug, the gas outlet end of the condenser is connected to a three-way valve through the first rubber hose, and the three-way valve is connected to the first glass tube.

[0008] Preferably, the lower end of the gas measuring tube is connected with a second glass tube, and the second glass tube is connected with one side of the level bottle through a second rubber hose. The level bottle is flat-bottomed, and a support plate is abutted against its bottom.

[0009] Preferably, a limit ring is connected to the top of the support plate, the limit ring is arranged on the outside of the level bottle, and a avoidance opening is provided on one side of the level bottle. A third glass tube is connected to one side of the level bottle, the third glass tube is connected to the second rubber hose, and runs through the avoidance opening.

[0010] Preferably, a lifting block is connected to the side of the limit ring away from the avoidance opening, the lifting block is connected to a stud via a thread, one end of the stud is movably abutted against the first support rod, and the other end is connected to a torsion plate, and the lifting block is slidably sleeved on the outer side of the first support rod.

[0011] Preferably, a first tube clamp is connected to the outer side of the gas measuring tube, and the first tube clamp is connected to the second supporting rod.

[0012] Preferably, the bottom of the gas meter is in contact with a rubber gasket, the bottom of the rubber gasket is in contact with a support block, the bottom of the support block is connected to a third support rod, and the second glass tube passes through the rubber gasket and the support block in sequence.

[0013] Preferably, a flask clamp is connected to the outer side of the first bottle mouth, and the flask clamp is connected to the fourth support rod.

[0014] Preferably, a second tube clamp is connected to the outer side of the condenser tube, and the second tube clamp is connected to a fifth support rod.

[0015] The beneficial effects of the utility model are:

[0016] The device for measuring the amount of carbon dioxide gas generated can achieve automatic stirring through a heat-collecting magnetic stirrer, thereby improving ease of use, ensuring constant temperature, and improving measurement accuracy. The liquid outlet end of the dropping funnel and the air inlet end of the condenser are passed through the first rubber plug to form an installation connection with the gas generating flask, eliminating the need for frequent disassembly and separation, thereby improving structural stability and sealing, preventing leakage, and improving test reliability. Water and a sample are added to the gas generating flask from the second bottle mouth, and the second bottle mouth is sealed by the second rubber plug, thereby achieving a rapid feeding effect and improving measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a first stereoscopic schematic diagram of the utility model.

[0018] Figure 2 for Figure 1 A magnified schematic diagram of center A.

[0019] Figure 3 It is a second stereoscopic schematic diagram of the utility model.

[0020] Figure 4 for Figure 3 A magnified schematic diagram of point B in the middle.

[0021] Figure 5 for Figure 3 Enlarged schematic diagram of point C in the middle.

[0022] Figure 6 It is the front view of the utility model.

[0023] Figure 7 This is a connection diagram of the limit ring.

[0024] In the figure: 1. gas generating flask; 2. condenser; 3. gas measuring tube; 4. level bottle; 5. heat collecting magnetic stirrer; 6. first bottle mouth; 7. second bottle mouth; 8. first rubber plug; 9. second rubber plug; 10. dropping funnel; 11. third rubber plug; 12. first glass tube; 13. thermometer; 14. first rubber hose; 15. three-way valve; 16. second glass tube; 17. second rubber hose; 18. support plate; 19. limiting ring; 20. avoidance opening; 21. third glass tube; 22. lifting block; 23. stud; 24. first support rod; 25. torsion plate; 26. first pipe clamp; 27. second support rod; 28. rubber gasket; 29. ​​support block; 30. third support rod; 31. flask clamp; 32. fourth support rod; 33. second pipe clamp; 34. fifth support rod. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-Figure 7 The utility model provides a technical solution: a device for measuring the amount of carbon dioxide gas generated, comprising a gas generating flask 1, a condenser 2, a gas measuring tube 3 and a level bottle 4 connected in sequence, and also comprising a heat collecting magnetic stirrer 5, the gas generating flask 1 is arranged in the heat collecting magnetic stirrer 5, the top of the gas generating flask 1 is provided with a first bottle mouth 6, and the front side thereof is provided with a second bottle mouth 7 arranged in an inclined manner, a first rubber plug 8 is movably provided in the first bottle mouth 6, and a second rubber plug 9 is movably provided in the second bottle mouth 7, a dropping funnel 10 is provided on one side of the condenser 2, and the liquid outlet end of the dropping funnel 10 and the air inlet end of the condenser 2 are both penetrated through the first rubber plug 8;

[0027] By placing the gas generating flask 1 in a heat-collecting magnetic stirrer 5, the material in the gas generating flask 1 can be automatically stirred, thereby improving the ease of use, ensuring a constant temperature, and improving the measurement accuracy. By passing the liquid outlet end of the dropping funnel 10 and the air inlet end of the condenser 2 through the first rubber plug 8, an installation connection with the gas generating flask 1 is formed, and there is no need for frequent disassembly and separation, thereby improving the structural stability and sealing degree, preventing leakage, and improving the test reliability. Water and a sample are added to the gas generating flask 1 through the second bottle mouth 7, and then the second bottle mouth 7 is sealed through the second rubber plug 9, which can achieve the effect of rapid feeding, is easy to operate, avoids gas loss during the sampling process when the original device tests some samples, and improves the measurement accuracy.

[0028] In order to facilitate the connection between the gas measuring tube 3 and the three-way valve 15 and the thermometer 13, in the present embodiment, preferably, a third rubber plug 11 is movably provided in the top pipe opening of the gas measuring tube 3, and a first glass tube 12 and a thermometer 13 are penetrated through the third rubber plug 11. The gas outlet end of the condenser 2 is connected to the three-way valve 15 through the first rubber hose 14, and the three-way valve 15 is communicated with the first glass tube 12.

[0029] In order to facilitate the taking and placing of the level bottle 4, in the present embodiment, preferably, the lower end of the gas measuring tube 3 is connected to a second glass tube 16, and the second glass tube 16 is connected to one side of the level bottle 4 through a second rubber hose 17. The level bottle 4 is flat-bottomed, and a support plate 18 is abutted against its bottom. The purpose is to support the level bottle 4 through the support plate 18, so that the level bottle 4 does not need to be clamped and fixed with a clamp, thereby facilitating the taking and placing of the level bottle 4.

[0030] In order to improve the reliability of the structure and prevent the level bottle 4 from falling off the support plate 18, in the present embodiment, preferably, a limit ring 19 is connected to the top of the support plate 18, the limit ring 19 is arranged on the outside of the level bottle 4, and a avoidance opening 20 is provided on one side thereof, and a third glass tube 21 is connected to one side of the level bottle 4, the third glass tube 21 is connected to the second rubber hose 17, and the third glass tube 21 passes through the avoidance opening 20, so as to limit the level bottle 4 by the limit ring 19, prevent the level bottle 4 from falling off the support plate 18, and improve the reliability of the structure.

[0031] In order to facilitate the adjustment of the height position of the level bottle 4, in the present embodiment, preferably, a lifting block 22 is connected to the side of the limit ring 19 away from the avoidance opening 20, and the lifting block 22 is connected to a stud 23 through a threaded connection. One end of the stud 23 is movably abutted against the first support rod 24, and the other end is connected to a torsion plate 25. The lifting block 22 is slidably sleeved on the outer side of the first support rod 24, so as to move the stud 23 to the side away from the first support rod 24 by twisting the torsion plate 25 to form a loosened state, and then the lifting block 22 is lifted and lowered along the first support rod 24. After the adjustment is completed, the torsion plate 25 is twisted in the opposite direction to move the stud 23 to the side close to the first support rod 24, and the first support rod 24 is pressed to form a locked state.

[0032] In order to improve the installation stability of the gas measuring tube 3 , in this embodiment, preferably, a first tube clamp 26 is connected to the outer side of the gas measuring tube 3 , and the first tube clamp 26 is connected to a second support rod 27 .

[0033] In order to further improve the installation stability of the gas measuring tube 3, in this embodiment, preferably, the bottom of the gas measuring tube 3 is abutted with a rubber gasket 28, the bottom of the rubber gasket 28 is abutted with a support block 29, the bottom of the support block 29 is connected to a third support rod 30, and the second glass tube 16 passes through the rubber gasket 28 and the support block 29 in sequence. The purpose is to improve the installation stability of the gas measuring tube 3 by placing the rubber gasket 28 on the upper side of the support block 29 and supporting the gas measuring tube 3.

[0034] In order to improve the installation stability of the gas generating flask 1 , in the present embodiment, preferably, a flask clamp 31 is connected to the outer side of the first bottle mouth 6 , and the flask clamp 31 is connected to the fourth support rod 32 .

[0035] In order to improve the installation stability of the condenser 2 , in this embodiment, preferably, a second tube clamp 33 is connected to the outer side of the condenser 2 , and the second tube clamp 33 is connected to a fifth support rod 34 .

[0036] The working principle and use process of the utility model are as follows: start the heat-collecting magnetic stirrer 5 and preheat it in a water bath at 75°C, rotate the three-way valve 15 to connect the device to the atmosphere, raise and lower the level bottle 4 to move the internal replacement solution, adjust the scale of the gas measuring tube 3 to zero, pass cooling water through the condenser 2, and rotate the three-way valve 15 to connect the condenser 2 with the gas measuring tube 3;

[0037] The heat collecting magnetic stirrer 5 is equipped with a magnetic stirrer for realizing magnetic stirring. The gas generating flask 1 is flat-bottomed. 100 mL of water is added into the gas generating flask 1 through the second bottle opening 7, and the magnetic stirrer is placed into the gas generating flask 1 from the second bottle opening 7. Then, about 1 g (accurate to 0.0002 g) of a sample wrapped in soft paper is put into the gas generating flask 1 from the second bottle opening 7. The second bottle opening 7 is quickly sealed by the second rubber stopper 9, the valve of the dropping funnel 10 is opened, 20 ml of hydrochloric acid solution is added from the dropping funnel 10, and then the dropping funnel is immediately closed. Close the valve of bucket 10, start the heat-collecting magnetic stirrer 5 to make the magnetic stirrer stir slowly and continuously. After 3 minutes, adjust the position of level bottle 4 appropriately. When the liquid levels of gas measuring tube 3 and level bottle 4 are balanced, read the liquid level scale V (mL) of gas measuring tube 3 and the reading of thermometer 13, and measure the atmospheric pressure at the same time. According to Appendix B and Appendix C of GB1886.245-2016, find out the correction values ​​of atmospheric pressure and vapor pressure, and perform a blank test according to the above steps. Except for not adding sample in the blank test, other operating steps and the type and amount of added reagents are the same as those in the determination test.

[0038] Finally, it should be noted that the above description is only a preferred example of the present utility model and is not intended to limit the present utility model. Although the present utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A device for measuring the amount of carbon dioxide gas generated, comprising a gas generating flask (1), a condenser (2), a gas measuring tube (3) and a level bottle (4) connected in sequence, and also comprising a heat collecting magnetic stirrer (5), wherein the gas generating flask (1) is arranged in the heat collecting magnetic stirrer (5), characterized in that: The gas generating flask (1) is provided with a first bottle mouth (6) on the top and a second bottle mouth (7) arranged in an inclined manner on the front side. A first rubber plug (8) is movably provided in the first bottle mouth (6), and a second rubber plug (9) is movably provided in the second bottle mouth (7). A dropping funnel (10) is provided on one side of the condenser (2), and the liquid outlet end of the dropping funnel (10) and the air inlet end of the condenser (2) are both passed through the first rubber plug (8).

2. The device for measuring the amount of carbon dioxide gas generated according to claim 1, characterized in that: A third rubber plug (11) is movably provided in the top pipe opening of the gas measuring tube (3), and a first glass tube (12) and a thermometer (13) are penetrated through the third rubber plug (11). The gas outlet end of the condenser (2) is connected to a three-way valve (15) via a first rubber hose (14), and the three-way valve (15) is in communication with the first glass tube (12).

3. The device for measuring the amount of carbon dioxide gas generated according to claim 1, characterized in that: The lower end of the gas measuring tube (3) is connected to a second glass tube (16), and the second glass tube (16) is connected to one side of a level bottle (4) through a second rubber hose (17). The level bottle (4) is flat-bottomed, and a support plate (18) is abutted against its bottom.

4. The device for measuring the amount of carbon dioxide gas generated according to claim 3, characterized in that: The top of the support plate (18) is connected to a limit ring (19), the limit ring (19) is arranged on the outside of the level bottle (4), and one side of the limit ring is provided with an avoidance opening (20), one side of the level bottle (4) is connected to a third glass tube (21), the third glass tube (21) is connected to the second rubber tube (17), and the third glass tube (21) passes through the avoidance opening (20).

5. The device for measuring the amount of carbon dioxide gas generated according to claim 4, characterized in that: A lifting block (22) is connected to the side of the limiting ring (19) away from the avoidance opening (20); the lifting block (22) is connected to a stud (23) via a thread; one end of the stud (23) is movably abutted against a first support rod (24); the other end is connected to a torsion plate (25); the lifting block (22) is slidably sleeved on the outer side of the first support rod (24).

6. The device for measuring the amount of carbon dioxide gas generated according to claim 1, characterized in that: The outer side of the gas measuring tube (3) is connected to a first tube clamp (26), and the first tube clamp (26) is connected to a second support rod (27).

7. The device for measuring the amount of carbon dioxide gas generated according to claim 3, characterized in that: The bottom of the gas metering tube (3) is in contact with a rubber gasket (28), the bottom of the rubber gasket (28) is in contact with a support block (29), the bottom of the support block (29) is connected to a third support rod (30), and the second glass tube (16) passes through the rubber gasket (28) and the support block (29) in sequence.

8. The device for measuring the amount of carbon dioxide gas generated according to claim 1, characterized in that: The outer side of the first bottle mouth (6) is connected to a flask clamp (31), and the flask clamp (31) is connected to a fourth support rod (32).

9. The device for measuring the amount of carbon dioxide gas generated according to claim 1, characterized in that: The outer side of the condenser tube (2) is connected to a second tube clamp (33), and the second tube clamp (33) is connected to a fifth support rod (34).

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