Device for accurately detecting gas production performance of reagent

Abstract

The utility model discloses a device for accurately detecting the gas production performance of a reagent, which is characterized in that a reactor is respectively connected with a raw material tank and a condenser pipe, a first electromagnetic valve is arranged between the condenser pipe and the reactor, and the condenser pipe is respectively connected with a sucking pump and a spherical bottle provided with a liquid level meter; the spherical bottle provided with a liquid level meter is connected with the first spherical bottle; the top end of the spherical bottle provided with the liquid level meter is provided with the liquid level meter, and the liquid level meter is in circuit connection with the display controller; the detection method comprises the following steps: collecting produced gas in a spherical bottle provided with a liquid level meter, recording the produced gas through the liquid level meter, metering the extracted gas through an air extracting pump, converting the revolution of the air extracting pump into the volume of the produced gas, and calculating to obtain the generation amount of the gas, such as carbon dioxide, of a reagent. The gas production metering device has the advantages of simplicity in operation, small influence of human factors, accuracy in metering and the like, and can be popularized and applied to various reagents with gas production metering requirements.

Description

Technical Field

[0001] This utility model belongs to the field of gas production detection technology, specifically relating to a method and device for accurately detecting gas production. Background Technology

[0002] Leavening agents are substances added during food processing that cause products to rise and form a dense, porous structure, giving them a fluffy, soft, or crisp texture. They are also important additives that determine the volume of foods such as bread, steamed buns, cakes, and biscuits. The working principle of leavening agents is that when mixed into dough and baked at high temperatures, they decompose upon heating, releasing a large amount of gas, causing the product to rise and form a loose, porous structure. This porous structure allows saliva to quickly penetrate the spongy texture of the food during chewing, breaking down soluble substances and stimulating taste buds, allowing people to quickly appreciate the flavor of the food. Afterward, when the food enters the stomach, the loose, soft, spongy texture allows various digestive enzymes to enter quickly, enabling the food to be digested and absorbed rapidly, thus avoiding the loss of nutrients during digestion.

[0003] Therefore, it is evident that the amount and rate of gas production by leavening agents have a significant impact on the taste and volume of food. Low gas production results in insufficient fluffiness, while excessive gas production leads to excessive volume expansion, affecting taste. Too rapid a gas production rate causes rapid expansion in the early stages of baking, before the food has solidified, resulting in collapse and a coarse, uneven texture later on. Conversely, too slow a gas production rate results in slow expansion in the early stages of baking, leaving some leavening agent unreleased by the time the food solidifies, thus negating the purpose of using a leavening agent. However, currently, GB2760-2024 only specifies the usage and types of food additives, while GB1886.245-2016 provides a method for determining the amount of carbon dioxide produced. Specifically, the reagent is mixed with hydrochloric acid solution, shaken in a water bath, and after a period of time, the liquid level in the gas measuring tube is read. The volume of carbon dioxide produced is then corrected using atmospheric pressure under standard conditions.

[0004] Chinese patent CN101526458A discloses a method for monitoring the gas generation rate of disodium dihydrogen pyrophosphate. The method involves mixing flour, milk powder, salt, edible oil, sodium bicarbonate, and disodium dihydrogen pyrophosphate evenly, reacting the mixture in a stirrer at 27°C for at least 3 minutes, then adding experimental water at 27°C to the stirrer, sealing and stirring at a constant speed for 3 minutes. The total volume of gas generated per minute is measured using two instruments and a water level gauge. The reaction is stopped promptly after 10 minutes, and the gas generation rate of disodium dihydrogen pyrophosphate is calculated based on the total volume of gas generated in the first 8 minutes. This method features simple equipment, low investment, no pollution, and safety. Utility Model Content

[0005] The technical problem this invention aims to solve is that existing gas generation methods are relatively crude and easily affected by changes in atmospheric pressure or human reading deviations, impacting detection accuracy. To address this problem, this invention provides a method and apparatus for accurately detecting gas generation. The reagent to be tested is mixed with raw materials in a sealed reactor to generate gas. The generated gas is condensed and collected in a spherical bottle equipped with a level gauge. Gas generation time is measured by the change in liquid level, and the gas generation volume is visualized by observing the liquid level changes. Then, a vacuum pump is used to extract and measure the gas from the spherical bottle equipped with the level gauge. This allows for precise measurement of gas generation time and volume, enabling accurate detection of gas generation in products such as leavening agents. The method is highly accurate, simple, and eliminates the influence of human factors and external factors such as atmospheric pressure.

[0006] To address the aforementioned problems, this utility model provides the following technical solution.

[0007] Technical Solution 1: A device for accurately detecting the gas production performance of reagents, characterized in that: the device includes a reactor 3, a condenser 10, a spherical bottle 16 equipped with a level gauge, a vacuum pump 17, and a display controller 18; wherein, the reactor 3 is equipped with a raw material tank, the reactor 3 is connected to the condenser 10, and a first solenoid valve for controlling the opening and closing of the gas path is provided on the gas path between the reactor 3 and the condenser 10; the condenser 10 is connected to the vacuum pump 17 and the spherical bottle 16 equipped with a level gauge, and the spherical bottle 16 equipped with a level gauge contains a displacement liquid; the raw material tank includes at least one or more types;

[0008] The first solenoid valve and the level gauge 13 are each controlled by the display controller 18; the air pump 17 is connected to the display controller 18, and the start and stop of the air pump 17 are controlled by the display controller 18, which also reads the volume of gas extracted from the air pump 17; thereby achieving accurate detection of reagent gas production and / or gas production rate.

[0009] Technical Solution 2: The device for accurately detecting the gas production performance of reagents according to Technical Solution 1, characterized in that:

[0010] The raw material tank is equipped with a peristaltic pump connected to the display controller 18. The display controller 18 controls the addition of raw materials and / or test reagents through the peristaltic pump on the raw material tank.

[0011] Technical Solution 3: The device for accurately detecting the gas production performance of reagents according to Technical Solution 1 is characterized in that: the reactor 3 is provided with a stir bar 4 inside, a water bath 2 outside, and is fixed in the middle by a buckle 6;

[0012] The bottom of the water bath 2 is equipped with a magnetic stirrer 1, and the water bath 2 is equipped with a first temperature sensor 5.

[0013] Technical Solution 4: The device for accurately detecting the gas production performance of reagents according to Technical Solution 1 is characterized in that: the gas generated by the reaction in reactor 3 is condensed and collected in the spherical bottle 16 equipped with a level gauge via condenser tube 10; one end of condenser tube 10 is connected to the cooling water collection tank 12 pipeline, and the other end is connected to the cooling water storage tank 11 pipeline; a second temperature sensor 24 is provided on the upper part of condenser tube 10.

[0014] Technical Solution 5: The device for accurately detecting the gas production performance of reagents according to Technical Solution 4 is characterized in that: the temperature of the cooling water in the cooling water storage tank 11 is displayed and controlled by the display controller 18 so as to cool the inside of the condenser tube 10 through the cooling water.

[0015] Technical Solution 6: The device for accurately detecting the gas production performance of a reagent according to claim 1, characterized in that: the spherical bottle 16 equipped with a level gauge is connected to the first spherical bottle 14, the first spherical bottle 14 contains a replacement liquid, and the replacement liquid is supplied to the spherical bottle 16 equipped with a level gauge through the first spherical bottle 14.

[0016] Technical Solution 7: The device for accurately detecting the gas production performance of reagents according to Technical Solution 6 is characterized in that: the first spherical bottle 14 is connected to the displacement liquid storage tank 15 via the second solenoid valve 19, and the second solenoid valve 19 is connected to the display controller 18.

[0017] Technical Solution 8: The device for accurately detecting the gas production performance of reagents according to Technical Solution 7 is characterized in that: the replacement liquid in the replacement liquid storage tank 15 is replenished into the first spherical bottle 14 and the spherical bottle 16 equipped with a level gauge by using the second solenoid valve 19, wherein the second solenoid valve 19 is controlled by the display controller 18.

[0018] Technical Solution 9: The device for accurately detecting the gas production performance of reagents according to Technical Solution 1 is characterized in that: the gas pump includes a lead screw slide module 21, a metering injector 22, and a support plate 23.

[0019] Technical Solution 10: The device for accurately detecting the gas production performance of reagents according to Technical Solution 9 is characterized in that: one end of the metering injector 22 is connected to the condenser tube 10, and the other end is connected to the lead screw slide module 21, which is connected to the display controller 18; the lead screw slide module 21 is equipped with a stepper motor, which is controlled by the display controller 18 to start and stop the air pump 17 according to the signal collected by the level gauge 13.

[0020] Technical Solution 11: The device for accurately detecting the gas production performance of reagents according to Technical Solution 9 is characterized in that: the gas extracted by the vacuum pump 17 enters the metering injector 22, and the display controller can drive the lead screw slide module 21 of the vacuum pump 17 to rotate by driving the motor, and the volume of gas extracted by the vacuum pump is calculated by the number of rotations.

[0021] Technical Solution 12: The device for accurately detecting the gas production performance of reagents according to Technical Solution 11 is characterized in that: the formula for calculating the gas volume is V=C / 36*N, where V is the gas volume in mL, C is the number of times the lead screw slide module 21 of the vacuum pump 17 rotates 10°, and N is the amount of gas pumped by the vacuum pump 17 in one revolution.

[0022] Technical Solution 13: The device for accurately detecting the gas production performance of reagents according to Technical Solution 1 is characterized in that: the reading of the gas pump 17 is calculated by the computer connected to it and then input to the display controller 18, and displayed on the display controller 18.

[0023] Technical Solution 14: The device for accurately detecting the gas production performance of reagents according to any one of technical solutions 1-13 is characterized in that: when the display controller 18 controls the second solenoid valve 19 to add replacement liquid to the first spherical bottle or a spherical bottle equipped with a level gauge, or when the display controller 18 controls the start and stop of the pumping pump 17, or when the display controller records the change in liquid level of the level gauge 13, or when the display controller 18 controls the addition of reaction raw materials and / or test reagents by controlling the peristaltic pump, signal transmission is achieved through Wi-Fi, Bluetooth or circuit connection.

[0024] Technical Solution 15: An apparatus for accurately detecting the gas production performance of reagents according to any one of technical solutions 1-13, the apparatus comprising two or more reactors, each of the two or more reactors being connected to the condenser tube 10, such that the apparatus can measure the gas production performance of two or more reagents, and when detecting the gas production amount or gas production rate of one of the reagents, other solenoid valves provided between the other reactors and the condenser tube are in a closed state.

[0025] In one specific implementation, the device of the present invention for accurately detecting the gas production performance of reagents is characterized in that: the raw material tank includes at least one, two or three of the following: a first raw material tank 7, a second raw material tank 8 and a third raw material tank 9; preferably, the raw material tank is controlled by a display controller 18 to add raw materials and / or test reagents to the reactor 3; more preferably, the addition of raw materials and / or test reagents is controlled by a peristaltic pump provided on the raw material tank.

[0026] And / or, the level gauge 13 is disposed at the top of the spherical bottle 16 equipped with the level gauge;

[0027] More preferably, the level gauge 13 feeds back the detected level signal to the display controller 18, which controls the start and stop of the air pump and reads the volume of gas extracted from the air pump 17, thereby achieving accurate detection of reagent gas production and / or gas production rate.

[0028] It is also preferable to control the temperature of the cooling water in the cooling water storage tank 11 so as to cool the inside of the condenser tube 10 through the cooling water, and more preferably the temperature of the cooling water is displayed and controlled by the display controller 18.

[0029] Preferably, the first spherical bottle 14 is provided with an open opening 20, so that the first spherical bottle 14 is in contact with the atmosphere.

[0030] In one specific embodiment, the method for accurately detecting the gas-generating performance of a reagent using the device described in this utility model is characterized by comprising the following steps:

[0031] (1) Inject the replacement fluid into a spherical bottle equipped with a level gauge, so that the liquid level in the spherical bottle equipped with the level gauge is level with the level gauge;

[0032] (2) Place the reagent and reaction raw materials whose gas production performance is to be tested into the reactor, open the first solenoid valve between the condenser and the reactor, and carry out the reaction;

[0033] (3) The gas produced by the reaction is condensed and collected in the spherical bottle equipped with a liquid level gauge;

[0034] (4) Close the first solenoid valve between the condenser and the reactor, and use the vacuum pump to draw the gas in the spherical bottle equipped with the level gauge into the vacuum pump. When the liquid level in the spherical bottle equipped with the level gauge returns to the initial position, stop the vacuum pumping and calculate the gas volume.

[0035] The system uses a display controller to control the start and stop of the air pump and records the changes in the liquid level of the level gauge to accurately detect the amount and / or speed of gas produced by the reagent.

[0036] In another specific embodiment, the method for accurately detecting the gas-generating performance of reagents using the device described in this utility model is characterized by comprising the following steps:

[0037] (1) Inject the replacement fluid into a spherical bottle equipped with a level gauge, so that the liquid level in the spherical bottle equipped with the level gauge is level with the level gauge;

[0038] (2) Place the reagent and reaction raw materials whose gas production performance is to be tested into the reactor, open the first solenoid valve between the condenser and the reactor, and carry out the reaction;

[0039] (3) The gas produced by the reaction is condensed and collected in the spherical bottle equipped with a liquid level gauge;

[0040] (4) Close the first solenoid valve between the condenser and the reactor, and use the vacuum pump to draw the gas in the spherical bottle equipped with the level gauge into the vacuum pump. When the liquid level in the spherical bottle equipped with the level gauge returns to the initial position, stop the vacuum pumping and calculate the gas volume.

[0041] The system uses a display controller to control the start and stop of the air pump and records the changes in the liquid level of the level gauge to accurately detect the amount and / or speed of gas produced by the reagent.

[0042] In another specific embodiment, the calculation of gas volume in step 4 further includes the blank air volume measured by pumping gas from the device to the metering injector 22 of the pumping pump 17 without adding the test reagent. The gas production is calculated by subtracting the blank air volume from the gas volume using the following formula (1):

[0043]

[0044] In the formula: 101.3 is the atmospheric pressure under standard conditions, and the unit is kilopascal (kPa);

[0045] 273 is the temperature under standard conditions, in Kelvin (K), and t is the reading of the temperature sensor (24) during the measurement, in Celsius (°C).

[0046] P1 is the corrected atmospheric pressure at the time of measurement, in kilopascals (kPa).

[0047] P2 is the corrected saturated vapor pressure of water at t℃, in kilopascals (kPa).

[0048] m represents the mass of the reagent, in grams.

[0049] V1 is the gas volume obtained by pumping the gas from the spherical bottle 16 equipped with a level gauge into the vacuum pump 17 after the reaction is completed. The gas volume is calculated by the number of rotations of the lead screw slide module 21, and the unit is mL.

[0050] V2 is the blank air volume of the spherical bottle equipped with a level gauge, measured by the metering sampler 22, when the entire reaction system is evacuated using a vacuum pump without the addition of the test reagent. The unit is mL.

[0051] Alternatively, the gas production can be calculated using the following formula (2):

[0052]

[0053] In the formula:

[0054] V----After the reaction is complete, the gas in the spherical bottle 16 equipped with a level gauge is drawn into the vacuum pump 17. The gas volume V is calculated by the number of rotations of the lead screw slide module 21, and the unit is mL.

[0055] m --- The actual mass of the reagent weighed, in grams.

[0056] The beneficial effects of this utility model are as follows:

[0057] 1. Opening the first solenoid valve records the gas production time. The gas produced by the reaction is condensed and collected in a spherical bottle equipped with a level gauge. The gas production volume is visualized by the change in the liquid level. Then, a vacuum pump is used to draw the gas collected in the spherical bottle equipped with the level gauge into the vacuum pump. The gas production volume is measured by the vacuum pump, and then the amount of gas generated by the reagent is calculated using the gas production volume. This achieves accurate measurement of reagent gas production without the need for manual reading, further improving the detection accuracy.

[0058] 2. The display controller controls the air pump to achieve automatic air pumping. In addition, the display controller also collects signal data from the level gauge and the air pump. The signal collected by the level gauge controls the start and stop of the air pump. Then, the reading of the air pump is calculated and directly displayed on the display controller, which makes it easy for operators to obtain the test results directly and reduces the complexity of calculation and operation.

[0059] 3. In a further optimized scheme, by using a display controller to control the second solenoid valve and / or the peristaltic pump on the raw material tank, automatic replenishment of replacement fluid and / or automatic addition of reaction raw materials can be achieved. Without disassembling the reactor, it can ensure that the reaction raw materials and the test reagent are in full contact. This not only simplifies the operation steps, but also ensures accurate liquid level detection during blank tests and improves the accuracy of operation.

[0060] 3. This utility model is applicable to the detection of various gas-producing substances, such as sodium bicarbonate, disodium dihydrogen pyrophosphate, and other leavening agents, as well as other substances that need to be tested for gas production, such as substances that produce carbon dioxide gas. It can be widely promoted and applied. Attached Figure Description

[0061] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model.

[0062] Figure 2 This is a schematic diagram of the air pump in the device of this utility model;

[0063] Figure 3 This is a schematic diagram of the structure of a gas-generating device in the prior art;

[0064] In the diagram, 1 is a magnetic stirrer, 2 is a water bath, 3 is a reactor, 4 is a stir bar, 5 is a first temperature sensor, 6 is a snap fastener, 7 is a first raw material tank, 8 is a second raw material tank, 9 is a third raw material tank, 10 is a condenser, 11 is a cooling water storage tank, 12 is a cooling water collection tank, 13 is a level gauge, 14 is a first spherical bottle, 15 is a displacement fluid storage tank, 16 is a spherical bottle equipped with a level gauge, 17 is a vacuum pump, 18 is a display controller, 19 is a second solenoid valve, 20 is an open port, 21 is a lead screw slide module, 22 is a metering injector, 23 is a support plate, and 24 is a second temperature sensor; 1a is a round-bottom flask for gas generation; 2a is a water bath; 3a is a dropping funnel; 4a is a condenser; 5a is a three-way valve; 6a is a gas measuring tube with an outer jacket; 7a is a level bottle; 8a is a thermometer; 9a is a rubber stopper; and 10a is a rubber tubing. Detailed Implementation

[0065] The technical solution of this utility model will be further explained below with reference to the accompanying drawings and specific embodiments. It is worth noting that the following embodiments are only preferred embodiments of this utility model and should not be construed as limiting this utility model. The protection scope of this utility model should be determined by the content of the claims. Modifications or substitutions made by those skilled in the art to the technical solution of this utility model without creative effort all fall within the protection scope of this utility model.

[0066] Structure of the detection device in Example 1

[0067] like Figure 1 As shown, the device of this utility model includes a reactor 3, a condenser 10, a spherical bottle 16 equipped with a level gauge, a vacuum pump 17, and a display controller 18.

[0068] The reactor 3 is equipped with a raw material tank and is connected to the condenser tube 10. A first solenoid valve (not shown) is provided between the reactor 3 and the condenser tube 10 to control the opening and closing of the gas path for the generated gas. The condenser tube 10 is connected to the vacuum pump 17 and the spherical bottle 16 equipped with a level gauge. The spherical bottle 16 with the level gauge contains a displacement liquid. The gas generated by the reaction in the reactor 3 is condensed and collected in the spherical bottle 16 with the level gauge via the condenser tube 10.

[0069] The first solenoid valve is connected to the display controller 18, and the level gauge 13 is also connected to the display controller 18. Both the first solenoid valve and the level gauge 13 are controlled by the display controller 18. The display controller 18 controls the opening and closing of the first solenoid valve and records the gas production time. The level gauge 13 is controlled by the display controller 18 and records the liquid level change. The vacuum pump 17 is connected to the display controller 18, and the start and stop of the vacuum pump 17 are controlled by the display controller 18, which also reads the volume of gas extracted from the vacuum pump 17, thereby achieving accurate detection of reagent gas production and / or gas production rate. Furthermore, the display controller 18 can generate graphs based on the detected gas production volume, gas production time, and gas production rate data for industrial production research.

[0070] In other words, the display controller 18 opens the first solenoid valve to open the gas path between the reactor 3 and the condenser tube 10, releasing gas into the condenser. At the same time, the gas production time is recorded. The generated gas enters the spherical bottle 16 equipped with a level gauge after condensation. The level gauge 13 feeds back the signal that the liquid level has returned to the initial height to the display controller 18. The display controller 18 controls the air pump to be turned off. In this way, the change in the liquid level height of the level gauge is recorded to accurately detect the amount of gas produced by the reagent and / or the gas production rate.

[0071] In one specific embodiment, the method for accurately detecting the gas-generating performance of a reagent using the device of this invention is characterized by comprising the following steps:

[0072] (1) Inject the replacement fluid into a spherical bottle equipped with a level gauge, so that the liquid level in the spherical bottle equipped with the level gauge is level with the level gauge;

[0073] (2) Place the reagent and reaction raw materials whose gas production performance is to be tested into the reactor, open the first solenoid valve between the condenser and the reactor, and carry out the reaction;

[0074] (3) The gas produced by the reaction is condensed and collected in the spherical bottle equipped with a liquid level gauge;

[0075] (4) Close the first solenoid valve between the condenser and the reactor, and use the vacuum pump to draw the gas in the spherical bottle equipped with the level gauge into the vacuum pump. When the liquid level in the spherical bottle equipped with the level gauge returns to the initial position, stop the vacuum pumping and calculate the gas volume.

[0076] The system uses a display controller to control the start and stop of the air pump and records the changes in the liquid level of the level gauge to accurately detect the amount and / or speed of gas produced by the reagent.

[0077] The method for accurately detecting the gas production performance of the reagent described above is characterized in that: the first solenoid valve is connected to a display controller, which controls the opening and closing of the gas path generated by the reaction by controlling the opening and closing of the first solenoid valve; the level gauge is connected to the display controller, which detects the liquid level height and transmits the liquid level height signal to the display controller; and the pump is connected to the display controller, which transmits the pumping volume signal from the pump to the display controller during the pumping process, and the display controller controls the start and stop of the pump.

[0078] Preferably, in step (2), the addition of the reaction raw materials is controlled by a display controller; and / or the reaction time is recorded while the display controller controls the opening and closing of the first solenoid valve.

[0079] In one specific embodiment of this utility model, such as Figure 1 As shown, the device for accurately detecting gas production of this utility model includes a reactor 3 connected to a first raw material tank 7, a second raw material tank 8, a third raw material tank 9, and a condenser pipe 10. The first raw material tank 7, the second raw material tank 8, and the third raw material tank 9 store different raw materials and supply them to the reactor 3. A peristaltic pump is installed on the raw material supply pipeline of each of the three tanks, and the peristaltic pump is connected to a display controller 18 to control the supply volume and speed. The condenser pipe 10 is used to condense the generated gas and remove water vapor. The condenser tube 10 is connected at one end to the cooling water collection tank 12 and at the other end to the cooling water storage tank 11. A second temperature sensor 24 is provided on the upper part of the condenser tube 10. Preferably, the temperature of the cooling water in the cooling water storage tank 11 is controlled so as to cool the inside of the condenser tube 10 through the cooling water. More preferably, the temperature of the cooling water is displayed and controlled by the display controller 18. The condenser tube 10 is connected to the air pump 17 and the spherical bottle 16 with a level gauge. The spherical bottle 16 with a level gauge is connected to the first spherical bottle 14.

[0080] Reactor 3 is connected to the raw material tank. The condenser is connected to the reactor via a pipe (e.g., a hose or glass tube). A first solenoid valve is also installed between the condenser and the reactor. The opening and closing of the gas path is controlled by the display controller 18. The vacuum pump 17 is connected to the display controller 18 and is used to control the start and stop of the vacuum pump 17, read the volume of gas pumped by the vacuum pump 17, and display the volume reading. The level gauge 13 is positioned at the top of the liquid surface and is used to detect changes in the liquid level. The level gauge feeds back the detected signal to the display controller 18, which determines whether to start or stop the vacuum pump 17 based on the liquid level. Specifically, after the reaction is completed, the first solenoid valve is closed to isolate the gas path between the condenser and the reactor. Then, vacuuming begins. Vacuuming stops when the liquid level returns to the initial liquid level height. The volume of gas pumped by the vacuum pump is displayed on the display controller 18.

[0081] In a preferred embodiment, the reactor 3 is equipped with a stirrer 4, which is used to stir and mix the raw materials under magnetic force to ensure a complete reaction. The reactor is also equipped with a detachable water bath 2 to provide a water bath environment as needed for testing.

[0082] In a further preferred embodiment, the bottom of the water bath 2 is provided with a magnetic stirrer 1 for driving the stir bar 4 to help mix the raw materials; the water bath 2 is provided with a first temperature sensor 5 to detect the temperature inside the water bath 2 in real time.

[0083] In a preferred embodiment, one end of the condenser tube 10 is connected to the cooling water collection tank 12 pipeline, and the other end is connected to the cooling water storage tank 11 pipeline. The temperature of the cooling water in the cooling water storage tank 11 is controlled so as to cool the inside of the condenser tube 10 through the cooling water. The cooling water temperature is displayed and controlled by the display controller 18. A second temperature sensor 24 is provided on the upper part of the condenser tube 10 to detect the saturated vapor temperature t of the water, thereby obtaining the saturated vapor pressure of the water.

[0084] In a preferred embodiment, a level gauge 13 is installed at the top of the spherical bottle 16 equipped with a level gauge. The level gauge 13 is positioned level with the top of the liquid surface and is used to detect the time and status of liquid level changes. The level gauge 13 is controlled by a display controller 18 and is equipped with a recording unit and an indicator light to record the liquid level status. The level gauge transmits the liquid level height signal to the display controller through the recording unit. The display controller 18 controls the opening and closing of the gas path between the condenser 10 and the reactor 3 by controlling a first solenoid valve. When the reaction begins, the display controller 18 opens the first solenoid valve, and the gas generated by the reaction flows into the spherical bottle 16 equipped with the level gauge. During this process, the level gauge 13 transmits the detected liquid level signal. The signal is transmitted to the display controller 18. When the reaction ends after a specified time, the first solenoid valve is closed via the display controller 18 to disconnect the gas path between the condenser and the reactor. Then, the vacuum pump 17 is started via the display controller 18 to pump out the gas. When the liquid level in the spherical bottle 16 equipped with a level gauge returns to its initial height, the level gauge 13 transmits the detected liquid level signal to the display controller 18. Then, the vacuum pump 17 is turned off. The volume of gas pumped by the vacuum pump 17 is displayed via the display controller 18. The reading of the vacuum pump 17 is calculated by the connected computer and then input to the display controller 18 for display. The display controller 18 is connected to a computer, and the various data obtained can be exported for industrial production research.

[0085] In a preferred embodiment, the first spherical bottle 14 is connected to the displacement fluid storage tank 15 via a second solenoid valve 19. The second solenoid valve 19 is used to replenish the displacement fluid in the displacement fluid storage tank 15 into the first spherical bottle 14 and the spherical bottle 16 equipped with a level gauge. The solenoid valve 19 is controlled by a display controller 18. In another specific embodiment, to reduce costs, the second solenoid valve 19 may be omitted, and the displacement fluid may be manually added from the displacement fluid storage tank 15 to the spherical bottle 16 equipped with a level gauge. Alternatively, the displacement fluid storage tank 15 may be omitted, and the second solenoid valve 19 may be absent, with the displacement fluid being manually added directly to the spherical bottle 16 equipped with a level gauge. A drain valve (not shown) installed on the pipeline between the first spherical bottle 14 and the spherical bottle 16 equipped with a level gauge can be used to drain the displacement fluid from the system. Additionally, the first spherical bottle 14 has an open port 20, allowing it to be open to the atmosphere.

[0086] In a preferred embodiment, the air pump 17 is connected to the display controller 18 for controlling the start and stop of the air pump 17, reading the volume of air pumped in the air pump 17, and displaying the volume reading.

[0087] In a more preferred embodiment, the vacuum pump consists of a lead screw slide module 21, a metering injector 22, and a support plate 23.

[0088] In a further preferred embodiment, one end of the metering injector 22 is connected to the condenser tube 10, and the other end is connected to the lead screw slide module 21. The lead screw slide module 21 is connected to the display controller 18. When evacuating, the display controller 18 drives the motor to rotate the lead screw slide module 21, drawing gas from the device into the metering injector 22. The gas volume is calculated by the number of rotations of the lead screw slide module 21, and the gas volume is finally displayed on the display controller 18. The lead screw slide module 21 is equipped with a stepper motor, and the rotation speed of the stepper motor is adjustable. The rotation speed is inversely proportional to the detection accuracy.

[0089] The present invention describes a display controller 18 that controls the second solenoid valve 19 to add replacement fluid to the first spherical bottle or a spherical bottle equipped with a level gauge, or the display controller 18 that controls the start and stop of the vacuum pump 17, or the display controller that records the liquid level height change of the level gauge 13, or the display controller 18 that controls the addition of reaction raw materials or reagents for testing gas production in the raw material tank (preferably by controlling the addition of reaction raw materials and / or test reagents by controlling a peristaltic pump), and the signal transmission is achieved through Wi-Fi, Bluetooth or circuit connection.

[0090] In a preferred embodiment, the device of this invention comprises two or more reactors, each of which is connected to the condenser tube 10 (sharing a common condenser tube). This allows the device to measure the gas production performance of two or more reagents. When detecting the gas production amount or rate of one reagent, other solenoid valves between the other reactors and the condenser tube are closed. In other words, the device of this invention can detect the gas production performance of multiple reagents.

[0091] Detection Example 1: Application of Detection

[0092] Taking Angel Yeast's Baizuan Double-Action Baking Powder as an example, the gas production test is conducted using the following steps:

[0093] (1) System self-test and initial calibration: Turn on the display controller 18 to perform system self-test and initial calibration, and balance the atmospheric pressure P1; among which, add ultrapure water to the first raw material tank 7 and hydrochloric acid solution to the second raw material tank 8, and then control the peristaltic pump to discharge the gas in the raw material delivery pipeline for calibration; turn on the water bath to maintain the temperature at 75°C and then heat the entire device. After the temperature is balanced, the second temperature sensor 24 detects the saturated vapor temperature t of the water, and refer to Appendix C of GB1886.245-2016 to obtain the corrected saturated vapor pressure P2 of the water;

[0094] (2) Preparation of replacement solution: Weigh 100g of sodium chloride and place it in a beaker. Add 350mL of water to dissolve it. Then add 1g of sodium bicarbonate and 2 drops of methyl orange indicator solution. Add hydrochloric acid solution until the solution turns slightly red. Then place the replacement solution in the replacement solution storage tank 15.

[0095] (3) Adjust the liquid level to be level with the level gauge 13 by adding replacement fluid: Open the second solenoid valve 19 to add replacement fluid from the replacement fluid storage tank 15 to the spherical bottle 16 equipped with the level gauge through the first spherical bottle 14, so that the liquid level in the spherical bottle 16 equipped with the level gauge is level with the level gauge 13. At this time, the level gauge 13 lights up red; at the same time, cooling water is introduced into the condenser tube 10.

[0096] (4) Add reagent Baizuan double-effect baking powder to the reactor: turn on the water bath 2 to keep the temperature at 75℃, accurately weigh 1.0002g of reagent Baizuan double-effect baking powder (m) and add it to the reactor 3. Then seal the reactor 3 with the buckle 6, connect the pipeline and place it in the water bath 2.

[0097] (5) Use the display controller 18 to control the peristaltic pump between the reactor and the raw material tank to add ultrapure water and hydrochloric acid to the reactor for reaction: control the peristaltic pump to add 100ml of ultrapure water and 20mL of hydrochloric acid solution (prepared according to the volume ratio of 37% concentrated hydrochloric acid and water of 1:2) to the reactor 3 respectively, and at the same time control the magnetic stirrer 1 to turn on, so that the stir bar in the reactor 3 rotates, mixes the reagent and the solution, and fully reacts to produce gas;

[0098] (6) When the reaction reaches the specified time, the first solenoid valve between the condenser and the reactor is closed after the reaction ends, the gas path is cut off and the reaction is ended. The recorded reaction time is: when the liquid level in the spherical bottle 16 equipped with a liquid level gauge begins to drop, the red light of the liquid level gauge 13 goes out, and when the liquid level returns to the initial height, the gas extraction is stopped.

[0099] (7) The display controller 18 is used to control the gas pump to extract gas from the spherical bottle and calculate the gas extraction volume V1. The motor in the screw slide module 21 is turned on to extract the gas from the spherical bottle 16 equipped with a liquid level gauge into the metering injector 22. The gas volume V1 is calculated by the number of rotations of the screw slide module 21. The calculation formula is V1=C / 36*N. In the formula, V1 is the gas volume in mL, C is the number of times the gas pump rotates 10°, 36 represents the degree of each part after dividing 360° into 10 parts, and N represents the gas extraction volume of the gas pump in one rotation. In this device, the value of N is 7.33mL.

[0100] (8) Repeat steps (4)-(7) without adding the test reagent to perform a blank experiment and obtain the gas volume V2;

[0101] (9) Calculate the amount of carbon dioxide gas W generated by the baking powder. The calculation formula is as follows:

[0102]

[0103] In the formula: 101.3 is the atmospheric pressure under standard conditions, and the unit is kilopascal (kPa);

[0104] 273 is the temperature under standard conditions, in Kelvin (K), and t is the reading of temperature sensor 24 at the time of measurement, in Celsius (°C).

[0105] P1 is the corrected atmospheric pressure at the time of measurement, in kilopascals (kPa).

[0106] P2 is the corrected saturated vapor pressure of water, in kilopascals (kPa).

[0107] V1 is the volume of gas in the spherical bottle 16 equipped with a level gauge, which is evacuated into the metering injector 22 after the reaction is completed. The volume of gas is calculated by the number of rotations of the lead screw slide module 21, and the unit is mL.

[0108] V2 is the blank air volume in the spherical bottle equipped with a level gauge, measured by the metering sampler 22 before the reaction is completed without the addition of the test reagent (the blank test is the same as the determination test except that the test reagent is not added). The entire reaction system is evacuated by a vacuum pump. The unit is mL.

[0109] The results showed that the measured gas volume V1-V2 was 64.437057 mL, therefore the calculated carbon dioxide volume W produced per gram of reagent was 56.09 mL / g.

[0110] Comparative Example 1

[0111] Referring to A.3 of Chinese National Standard GB1886.245-2016, the baking powder in Example 1 was added according to the material ratio of Example 2. Figure 3 In the round-bottom flask 1a of the apparatus shown, the specific operating steps were carried out according to the standard, and the amount of carbon dioxide gas generated was measured. The results showed that the volume of gas generated, V1-V2, was 64 mL. Therefore, the calculation formula was the same as in Example 1, and the volume of carbon dioxide generated per gram of reagent, W, was calculated to be 55.71 mL / g.

[0112] Detection Example 2

[0113] Taking commercially available disodium dihydrogen pyrophosphate as an example, the specific steps for detecting the gas production after the reaction of an acidic salt with sodium bicarbonate are as follows:

[0114] (1)-(3) System calibration and initialization, replacement fluid replenishment and level gauge adjustment are the same as in test example 1.

[0115] (4) Add reagents to the reactor: accurately weigh 0.5000g of reagent disodium dihydrogen pyrophosphate (m) and 0.5000g of sodium bicarbonate into reactor 3, and then seal reactor 3 with buckle 6;

[0116] (5) Use display controller 18 to control and add ultrapure water to the reactor for reaction: add 50 mL of ultrapure water to the reactor 3 by controlling the peristaltic pump, and at the same time control the magnetic stirrer 1 to turn on, so that the stir bar in the reactor 3 rotates, mixes the reagent with the solution, and fully reacts to produce gas.

[0117] (6) End of reaction: After 5 minutes of reaction, close the first solenoid valve between the condenser and the reactor to cut off the gas path.

[0118] The process of pumping air, blank test, and calculation results are the same as steps (7)-(9) in Example 2;

[0119] The results showed that the measured gas volume V1-V2 was 59.482970 mL, which was the same as the calculation formula in Example 1. The calculated carbon dioxide volume W produced per gram of reagent and sodium bicarbonate was 103.73 mL / g.

[0120] Comparative Example 2

[0121] Referring to A.3 of Chinese National Standard GB1886.245-2016, the reagents in Example 3 were added according to the material ratio of Example 3. Figure 3 In the round-bottom flask 1a of the apparatus shown, the specific operating steps were carried out according to the standard, and the amount of carbon dioxide gas generated was measured. The results showed that the volume of gas produced, V1-V2, was 58 mL. The calculation formula was the same as in Example 1. The volume of carbon dioxide W produced per gram of reagent and sodium bicarbonate was calculated to be 101.14 mL / g.

[0122] Detection Example 3

[0123] Taking baking powder produced by Angel Yeast Co., Ltd. as an example, the specific steps for testing gas production are as follows:

[0124] (1)-(3) System calibration and initialization, replacement fluid replenishment and level gauge adjustment are the same as in Example 2.

[0125] (4) Add reagents to reactor: accurately weigh 1.7000g baking powder (m) into reactor 3, and then seal reactor 3 with buckle 6;

[0126] (5) Turn off the water bath heating, and use the display controller 18 to control and add ultrapure water and sulfuric acid to the reactor for reaction: add 10 mL of sulfuric acid solution (prepared according to the volume ratio of 98% concentrated sulfuric acid and water of 1:5, i.e., 1 part acid and 5 parts water) to the reactor 3 by controlling the peristaltic pump, and at the same time control the magnetic stirrer 1 to turn on, so that the stir bar in the reactor 3 rotates, mixes the reagent with the solution, and fully reacts to produce gas;

[0127] (6) End of reaction: After 5 minutes of reaction, close the first solenoid valve between the condenser and the reactor to cut off the gas path.

[0128] The air extraction process is the same as step (7) in Example 2;

[0129] (8) Calculate the amount of carbon dioxide gas generated by the baking powder, W, using the following formula (using the formula in standard AACC-12-20.01):

[0130]

[0131] In the formula:

[0132] V----After the reaction is complete, the gas in the spherical bottle 16 equipped with a level gauge is pumped into the vacuum pump 17. The gas volume V is calculated by the number of rotations of the screw slide module 21, in mL. Since the 10 mL of sulfuric acid solution added in step (5) is added after the reactor is sealed, the 10 mL needs to be subtracted from the gas volume V when calculating the carbon dioxide gas generation W using the formula in standard AACCI-12-20.01.

[0133] m --- The actual mass of the reagent weighed, in grams;

[0134] The correction value is obtained by referring to table AACC-12-29.01 based on the gas temperature and pressure during evacuation.

[0135] The results showed that the measured gas volume V was 183.625971 mL, therefore the carbon dioxide production rate of the reagent was calculated to be 17.38%.

[0136] Comparative Example 3

[0137] The reagent in Example 4 was tested according to the material ratio of Example 3, based on the contents of the method in standard AACC-12-29.01. The specific operation steps were carried out according to the standard, and the amount of carbon dioxide gas generated was measured. The results showed that the volume of gas produced, V, was 181 mL, which was the same as the calculation formula in Example 3. Therefore, the carbon dioxide gas production of the reagent was calculated to be 17.11%.

[0138] Clearly, as can be seen from the comparative examples 1-3 above, existing technologies, according to current standard methods, determine the volume of gas produced during a reaction by visually observing changes in the liquid level, unlike the device of this invention, which can be controlled via a display controller; furthermore, Figure 3 The addition of reactants, such as hydrochloric acid solution and water, to the apparatus is all done manually. Therefore, the following methods are employed: Figure 3 The existing devices and standard methods cannot accurately detect all the gas generated during the process. However, the device of this invention controls the addition of reactants by setting a display controller, and controls the opening and closing of the gas path between the reactor and the condenser by using a first solenoid valve, thereby determining when to start evacuation. It also acquires the liquid level height change signal detected by the liquid level gauge to determine when to stop evacuation. In addition, the gas volume can be calculated by the number of rotations of the evacuation pump screw slide module, and the information is transmitted to the display controller to calculate the gas volume and gas production rate per unit weight of reagent, forming a curve.

[0139] The above embodiments and comparative examples demonstrate that the device and method of this invention are applicable to the detection of various gas-producing substances, such as sodium bicarbonate, disodium dihydrogen pyrophosphate, and other leavening agents, as well as other substances that require detection of gas production. Therefore, they can be widely applied.

[0140] The above are specific embodiments of the device and method of this utility model. Various changes and substitutions can be made to this utility model without departing from the spirit and principles of this utility model, and all such changes and substitutions are within the protection scope of this utility model.

Claims

1. A device for accurately detecting the gas-generating performance of reagents, characterized in that: The device includes a reactor (3), a condenser (10), a spherical bottle (16) equipped with a level gauge, a vacuum pump (17), and a display controller (18); wherein, the reactor (3) is equipped with a raw material tank, the reactor (3) is connected to the condenser (10), and a first solenoid valve for controlling the opening and closing of the gas path is provided on the gas path between the reactor (3) and the condenser (10); the condenser (10) is connected to the vacuum pump (17) and the spherical bottle (16) equipped with a level gauge respectively, and the spherical bottle (16) equipped with a level gauge contains a displacement liquid; the raw material tank includes at least one or more types; The first solenoid valve and the level gauge (13) are each controlled by the display controller (18); the air pump (17) is connected to the display controller (18), and the start and stop of the air pump (17) are controlled by the display controller (18) and the volume of gas extracted from the air pump (17) is read; thereby realizing accurate detection of reagent gas production and / or gas production speed.

2. The apparatus for accurately detecting the gas-generating performance of reagents according to claim 1, characterized in that: The raw material tank is equipped with a peristaltic pump connected to the display controller (18), and the display controller (18) controls the addition of raw materials and / or test reagents through the peristaltic pump on the raw material tank.

3. The apparatus for accurately detecting the gas-generating performance of reagents according to claim 1, characterized in that: The reactor (3) is equipped with a stir bar (4) inside and a water bath (2) outside, and is fixed in the middle by a buckle (6); The bottom of the water bath (2) is equipped with a magnetic stirrer (1), and the water bath (2) is equipped with a first temperature sensor (5).

4. The apparatus for accurately detecting the gas production performance of reagents according to claim 1, characterized in that: in, The gas produced by the reactor (3) is condensed and collected in the spherical bottle (16) equipped with a level gauge via the condenser tube (10); one end of the condenser tube (10) is connected to the cooling water collection tank (12) and the other end is connected to the cooling water storage tank (11); a second temperature sensor (24) is provided on the upper part of the condenser tube (10).

5. The apparatus for accurately detecting the gas production performance of reagents according to claim 4, characterized in that: The temperature of the cooling water in the cooling water storage tank (11) is displayed and controlled by the display controller (18) so as to cool the inside of the condenser tube (10) by means of the cooling water.

6. The apparatus for accurately detecting the gas-generating performance of reagents according to claim 1, characterized in that: The spherical bottle (16) equipped with a level gauge is connected to the first spherical bottle (14), which contains a replacement fluid. The replacement fluid is supplied to the spherical bottle (16) equipped with a level gauge through the first spherical bottle (14).

7. The apparatus for accurately detecting the gas-generating performance of reagents according to claim 6, characterized in that: The first spherical bottle (14) is connected to the replacement fluid storage tank (15) via the second solenoid valve (19), and the second solenoid valve (19) is connected to the display controller (18).

8. The apparatus for accurately detecting the gas production performance of reagents according to claim 7, characterized in that: The replacement fluid in the replacement fluid storage tank (15) is replenished into the first spherical bottle (14) and the spherical bottle (16) equipped with a level gauge by using the second solenoid valve (19), wherein the second solenoid valve (19) is controlled by the display controller (18).

9. The apparatus for accurately detecting the gas production performance of reagents according to claim 1, characterized in that: The air pump includes a lead screw slide module (21), a metering injector (22), and a support plate (23).

10. The apparatus for accurately detecting the gas production performance of reagents according to claim 9, characterized in that: One end of the metering injector (22) is connected to the condenser tube (10) and the other end is connected to the lead screw slide module (21). The lead screw slide module (21) is connected to the display controller (18). The lead screw slide module (21) is equipped with a stepper motor. The display controller (18) controls the stepper motor to start and stop the air pump (17) according to the signal collected by the level gauge (13).

11. The apparatus for accurately detecting the gas production performance of reagents according to claim 9, characterized in that: The gas extracted by the vacuum pump (17) enters the metering injector (22). The display controller drives the motor to rotate the lead screw slide module (21) of the vacuum pump (17), and calculates the volume of gas extracted by the vacuum pump by the number of rotations.

12. The apparatus for accurately detecting the gas production performance of reagents according to claim 11, characterized in that: The formula for calculating the gas volume is V=C / 36*N, where V is the gas volume in mL, C is the number of times the lead screw slide module (21) of the air pump (17) rotates 10°, and N is the amount of air pumped in one revolution of the air pump (17).

13. The apparatus for accurately detecting the gas production performance of reagents according to claim 1, characterized in that: The reading of the air pump (17) is calculated by the computer connected to it and then input to the display controller (18), where it is displayed.

14. The apparatus for accurately detecting the gas production performance of reagents according to claim 7 or 8, characterized in that: When the display controller (18) controls the second solenoid valve (19) to add replacement fluid to the first spherical bottle (14) or the spherical bottle (16) equipped with a level gauge, or when the display controller (18) controls the start and stop of the vacuum pump (17), or when the display controller records the change in the liquid level of the level gauge (13), or when the display controller (18) controls the addition of reaction raw materials and / or test reagents by controlling the peristaltic pump, signal transmission is achieved through Wi-Fi, Bluetooth or circuit connection.

15. The apparatus for accurately detecting the gas production performance of a reagent according to any one of claims 1-13, characterized in that: The device contains two or more reactors, each of which is connected to the condenser (10), so that the device can measure the gas production performance of two or more reagents. When the gas production amount or gas production rate of one of the reagents is detected, the other solenoid valves set between the other reactors and the condenser are in the closed state.

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