Device for accurately measuring gas production rate of fermentation substance

Abstract

The utility model discloses a device for accurately measuring the gas production rate of fermentation substances, which comprises a base, a stirring tank mounted on the base, a driving unit arranged above an opening in the top of the stirring tank in a lifting manner, a sealing cover arranged in the stirring tank and a stirring unit in transmission connection with the bottom end of the driving unit, the two sides of the top of the sealing cover are connected with a first gas pipe and a second gas pipe respectively. The second gas pipe is sequentially connected with a gas flow controller and a trace gas flowmeter. The device has the advantages that the detection accuracy of the gas production rate of fermentation substances is improved, the safety risk caused by damage of glass instruments is eliminated, meanwhile, the labor intensity of detectors is relieved, stable control over the detection temperature is achieved, and the efficiency of a determination test is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical detection equipment, in particular to a device for accurately measuring the gas production of fermentation substances. Background Art

[0002] The gas evolution rate of disodium dihydrogen acid pyrophosphate is a key indicator of this product. Different gas evolution rates are used in different fields. The current disodium dihydrogen acid pyrophosphate gas evolution rate detection device is divided into two parts. The first part is a closed stirring device, whose main function is to simulate the fermentation process. After adding a certain amount of water to the base material, it is stirred; the second part is a fermentation gas collection device, whose main function is to collect all fermented gases and record the total volume of the gas. This device uses a gas collection device based on the principle of a U-tube water seal. It has the following defects: First, the U-tube water seal needs to keep the same horizontal plane on both sides for accurate measurement, but the gas produced by fermentation is discontinuous and the gas volume varies. The current manual lifting method is difficult to maintain continuous balance; second, the measuring device is a glass tube, and the glass container is often damaged; third, the density of the liquid fluctuates due to the influence of the ambient temperature, resulting in unstable test results. However, the temperature in the production workshop is relatively high, and it is difficult for the laboratory to stably control the temperature. Summary of the Invention

[0003] The technical problem to be solved by the utility model is that adopting a U-shaped tube to detect the collected gas not only results in large errors and low detection efficiency but also makes the detection device easily damaged.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a device for accurately measuring the gas production of fermented materials, including a base, a stirring tank installed on the base, a driving unit arranged to be lifted above the top opening of the stirring tank, a sealing cover arranged in the stirring tank and a stirring unit connected to the bottom end of the driving unit, a first air pipe and a second air pipe are respectively connected to the two sides of the top of the sealing cover, and the second air pipe is connected to the airflow controller and the trace gas flow meter in turn.

[0005] Preferably, the airflow controller is located in a sealed bag, and an adhesive area is provided in the sealed bag, and the adhesive area is located on both sides of the airflow controller connecting pipe.

[0006] Preferably, an annular water seal groove is provided at the bottom of the mixing tank, and the outer side wall of the sealing cover is in contact with the inner side wall of the water seal groove.

[0007] Preferably, the driving unit includes a stirring motor installed on a lifting frame on one side of the base, the output end of the stirring motor is coaxially fixed with an annular connecting sleeve, and a pin hole is radially provided at the bottom of the connecting sleeve. The stirring unit includes a stirring shaft and a stirring sheet connected to the bottom end of the stirring shaft, the top of the stirring shaft is matched with the connecting sleeve, and a fixing hole corresponding to the pin hole is provided at the top end of the stirring shaft.

[0008] Preferably, the stirring blade is L-shaped, the vertical section of the stirring blade is arranged parallel to the stirring shaft and fixed to the bottom end of the stirring shaft, and the bottom of the horizontal section of the stirring blade is evenly provided with comb teeth.

[0009] Preferably, the stirring blades are evenly arranged around the stirring shaft, and adjacent stirring blades are fixedly connected by arc-shaped pipes.

[0010] Preferably, an elastic and retractable key is provided on the top of the outer peripheral surface of the sealing cover, and the key is distributed at equal angles around the axis of the sealing cover. An annular protrusion is provided on the top of the mixing tank, and a card hole adapted to the key is provided on the inner side wall of the annular protrusion.

[0011] Preferably, a receiving tank for the stirring tank is provided in the middle of the bottom of the base, and a heating structure and a magnetic attraction structure are provided at the bottom of the receiving tank.

[0012] The utility model provides a device for accurately measuring the gas production of fermented materials. The device comprises the following steps: pouring disodium dihydrogen pyrophosphate acid powder into the middle of a stirring tank, mixing a certain amount of water into the disodium dihydrogen pyrophosphate powder, covering the powder with a sealing cover, then injecting water into the stirring tank to form a water seal, stirring the disodium dihydrogen pyrophosphate powder with water through a stirring unit, and measuring the generated gas through a trace gas flow meter on a second air pipe. The device is not only simple to operate but also has high measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0014] Figure 1 It is a structural schematic diagram of an embodiment of the present utility model.

[0015] Figure 2 Schematic diagram of the internal structure of an embodiment of the present utility model.

[0016] In the figure: 1. Base; 2. Mixing tank; 3. Drive unit; 4. Sealing cover; 5. First air pipe; 6. Second air pipe; 7. Sealing bag; 8. Trace gas flow meter; 9. Air flow controller; 10. Mixing shaft; 11. Mixing blade; 12. Water seal groove; 13. Key. DETAILED DESCRIPTION

[0017] like Figure 1 and Figure 2 As shown, the utility model provides a device for accurately measuring the gas production of fermented materials, including a base 1, a stirring tank 2 installed on the base 1, a driving unit 3 that is lifted and arranged above the top opening of the stirring tank 2, a sealing cover 4 arranged in the stirring tank 2 and a stirring unit that is transmission-connected to the bottom end of the driving unit 3, and a first air pipe 5 and a second air pipe 6 are respectively connected to the two sides of the top of the sealing cover 4, and the second air pipe 6 is connected to an airflow controller 9 and a trace gas flowmeter 8 in sequence.

[0018] When testing the gas production of the fermented material, the fermented material (disodium dihydrogen pyrophosphate powder) is poured into the mixing tank 2, and the mixing tank 2 is then placed on the base 1. The fermented material is then sealed using the sealing cover 4, and water is injected into the mixing tank 2 to form a water seal to ensure that the inside of the sealing cover 4 is in a sealed state. Then, a set volume of water is injected into the sealing cover 4 through the first air pipe 5. After the water enters the sealing cover 4, the first air pipe 5 is folded in half and clamped using an air pipe clamp, and the driving unit 3 is controlled to descend so that the output end of the driving unit 3 contacts the top of the stirring unit. The driving unit 3 is connected to the stirring unit by transmission, and then the driving unit 3 is started to drive the stirring unit to stir the fermented material. During the stirring process, the air flow controller 9 controls the air flow flowing through the second air pipe 6 to reach the air volume value that can be measured by the trace gas flowmeter 8. After the air volume in the second air pipe 6 reaches 0.5 ml, the air flow controller 9 automatically turns on, and the air flow enters the trace gas flowmeter 8 and is recorded.

[0019] like Figure 1 As shown. The airflow controller 9 is located within the sealed bag 7, which has adhesive areas on both sides of the pipe connecting the airflow controller 9. By installing the airflow controller 9 within the sealed bag 7 and connecting the air pipes at the airflow controller 9's inlet and outlet, the sealed bag 7 is glued together to seal the airflow controller 9's inlet and outlet sections, preventing leakage during air volume detection.

[0020] like Figure 2 As shown, to improve the sealing performance of the sealing cover 4, an annular water seal groove 12 is provided at the bottom of the mixing tank 2. The outer wall of the sealing cover 4 mates with the inner wall of the water seal groove 12. When placing the fermentation material, the fermentation material is directly placed in the inner center of the water seal groove 12. The sealing cover 4 is buckled into place along the inner wall of the water seal groove 12, and the water seal groove 12 and the sealing cover 4 cooperate to seal the fermentation material. The water seal groove 12 also limits the sealing cover 4 in position, ensuring the stability of the mixing process.

[0021] like Figure 1As shown. The driving unit 3 includes a stirring motor installed on a lifting frame on one side of the base 1. The output end of the stirring motor is coaxially fixed with an annular connecting sleeve. The bottom of the connecting sleeve is radially provided with a pin hole. The stirring unit includes a stirring shaft 10 and a stirring blade 11 connected to the bottom end of the stirring shaft 10. The top of the stirring shaft 10 cooperates with the connecting sleeve, and the top of the stirring shaft 10 is provided with a fixing hole corresponding to the pin hole. The stirring unit is integrated in the sealing cover 4, and the driving unit 3 is integrated on the lifting frame. When stirring, the top of the lifting frame is controlled to descend so that the connecting sleeve on the output shaft of the stirring motor is sleeved on the top of the stirring shaft 10. The output shaft of the stirring motor is connected to the stirring shaft 10 by a pin. Then, the stirring shaft 10 is driven to rotate by the stirring motor, and the fermented material is fully stirred by the stirring blade 11.

[0022] like Figure 2 As shown, to improve stirring uniformity, the stirring blade 11 is L-shaped. The vertical section of the stirring blade 11 is arranged parallel to the stirring shaft 10 and fixed to the bottom end of the stirring shaft 10. The bottom of the horizontal section of the stirring blade 11 is evenly provided with comb teeth. The stirring blade 11 stirs through the horizontal section and disperses and mixes the food through the comb teeth.

[0023] like Figure 2 As shown, to improve the stability of the stirring blades 11, the stirring blades 11 are evenly arranged around the stirring shaft 10, and adjacent stirring blades 11 are fixedly connected by arc-shaped pipes. No less than two stirring blades 11 are installed on the stirring shaft 10, and the stirring blades 11 are evenly distributed along the stirring shaft 10. The vertical sections are connected to the stirring shaft 10 by welding, and arc-shaped pipes are added for auxiliary fixation.

[0024] like Figure 2 As shown, in order to improve the stability of the sealing cover 4 during the stirring process. The top of the outer peripheral surface of the sealing cover 4 is provided with an elastic and retractable card key 13, and the card key 13 is distributed at equal angles around the axis of the sealing cover 4. The top of the inner side of the mixing tank 2 is provided with an annular protrusion, and the inner side wall of the annular protrusion is provided with a card hole adapted to the card key 13. The card key 13 is a conventional spring column. The sealing cover 4 is buckled into the mixing tank 2. By compressing the spring inside the card key 13, the movable end of the card key 13 is contracted, and the movable end of the card key 13 enters the card hole and completes the adaptation, fixing the sealing cover 4 in the mixing tank 2. When taking out the sealing cover 4, by pressing the card key 13 inward at the same time, the movable end of the card key 13 is separated from the mixing tank 2, and the sealing cover 4 can be taken out from the mixing tank 2.

[0025] like Figure 2As shown, to improve the stability of the mixing tank 2 installed in the base 1, a storage tank for the mixing tank 2 is set in the middle of the bottom of the base 1. The bottom of the storage tank is equipped with a heating structure and a magnetic structure. After the mixing tank 2 is placed in the storage tank on the base 1, the magnetic structure tightly adsorbs the mixing tank 2 on the base 1, and the heating structure controls the temperature so that the temperature inside the mixing tank 2 is at the set temperature for fermentation and gas production.

Claims

1. A device for accurately measuring the gas production of a fermentation substance, characterized by: The invention comprises a base (1), a stirring tank (2) mounted on the base (1), a driving unit (3) arranged to be lifted above the top opening of the stirring tank (2), a sealing cover (4) arranged in the stirring tank (2), and a stirring unit connected to the bottom end of the driving unit (3) via a transmission, wherein the first air pipe (5) and the second air pipe (6) are connected to the top of the sealing cover (4) on both sides respectively, and the second air pipe (6) is connected to the air flow controller (9) and the trace gas flow meter (8) in sequence.

2. A device for accurately measuring the gas production of a fermented substance according to claim 1, characterized in that: The airflow controller (9) is located in the sealing bag (7), and an adhesion area is provided in the sealing bag (7), and the adhesion area is located on both sides of the connection pipe of the airflow controller (9).

3. A device for accurately measuring gas production of fermented materials according to claim 1, characterized in that: An annular water seal groove (12) is provided at the inner bottom of the mixing tank (2), and the outer side wall of the sealing cover (4) is in contact with the inner side wall of the water seal groove (12).

4. A device for accurately measuring gas production of fermented materials according to claim 1, characterized in that: The driving unit (3) comprises a stirring motor mounted on a lifting frame on one side of the base (1); an annular connecting sleeve is coaxially fixedly mounted on the output end of the stirring motor; a pin hole is radially provided at the bottom of the connecting sleeve; the stirring unit comprises a stirring shaft (10) and a stirring blade (11) connected to the bottom end of the stirring shaft (10); the top of the stirring shaft (10) is engaged with the connecting sleeve, and a fixing hole corresponding to the pin hole is provided at the top end of the stirring shaft (10).

5. A device for accurately measuring the gas production of a fermentation substance according to claim 4, characterized in that: The stirring blade (11) is L-shaped, the vertical section of the stirring blade (11) is arranged parallel to the stirring shaft (10) and fixed to the bottom end of the stirring shaft (10), and the bottom of the horizontal section of the stirring blade (11) is evenly provided with comb teeth.

6. A device for accurately measuring gas production of fermented materials according to claim 5, characterized in that: The stirring blades (11) are evenly arranged around the stirring shaft (10), and adjacent stirring blades (11) are fixedly connected via arc-shaped pipes.

7. A device for accurately measuring gas production of fermented materials as claimed in claim 1, characterized in that: An elastic and retractable latch key (13) is provided on the top of the outer peripheral surface of the sealing cover (4), and the latch keys (13) are distributed at equal angles around the axis of the sealing cover (4). An annular protrusion is provided on the top of the inner side of the stirring tank (2), and a latch hole adapted to the latch key (13) is provided on the inner side wall of the annular protrusion.

8. The device for accurately measuring the gas production of a fermentation substance according to claim 1, wherein: A receiving groove for the stirring tank (2) is provided in the middle of the bottom of the base (1), and a heating structure and a magnetic attraction structure are provided at the bottom of the receiving groove.

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