Gas mixing device for fermenters

Abstract

This utility model discloses a gas mixing device for a fermenter, comprising a fermenter, a controller, a gas analyzer, and three mixing gas paths. The inlet ends of the three mixing gas paths are connected to different gas sources, and the outlet ends of the three mixing gas paths are connected to the fermenter. Each mixing gas path includes a first pressure sensor, a solenoid valve, and a flow controller arranged sequentially. The gas analyzer is connected to the fermenter via a pipeline, and its signal output end is connected to the signal input end of the controller. The signal output end of the controller is connected to the flow controller. This utility model can automatically distribute gas into the fermenter, ensuring the atmospheric environment inside the fermenter, and simultaneously control the liquid inside the fermenter to maintain a constant temperature, further ensuring the fermentation environment within the fermenter.

Description

Technical Field

[0001] This utility model relates to the field of gas mixing device technology, and in particular to a gas mixing device for fermenters. Background Technology

[0002] During fermentation, the atmosphere inside the fermenter (the atmosphere formed by different concentrations of carbon dioxide, hydrogen, and oxygen) needs to be strictly controlled. Current technology controls this atmosphere by directly introducing a pre-mixed gas mixture into the fermenter, but this method is costly. Therefore, there is an urgent need for a low-cost gas mixing device for fermenters. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a gas mixing device for fermenters, which can automatically distribute gas into the fermenter to ensure the atmosphere environment inside the fermenter, and at the same time control the liquid inside the fermenter to maintain a constant temperature, further ensuring the fermentation environment inside the fermenter.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A gas mixing device for a fermenter includes a fermenter, a controller, a gas analyzer, and three gas mixing paths. The inlet ends of the three gas mixing paths are connected to different gas sources, and the outlet ends of the three gas mixing paths are connected to the fermenter. Each gas mixing path includes a first pressure sensor, a solenoid valve, and a flow controller arranged sequentially.

[0006] The gas analyzer is connected to the fermenter via a pipeline. The signal output terminal of the gas analyzer is connected to the signal input terminal of the controller, and the signal output terminal of the controller is connected to the flow controller.

[0007] Furthermore, a first flame stop valve and a second flame stop valve are sequentially provided in the mixed gas path. The first flame stop valve is located between the gas source and the first pressure sensor, and the second flame stop valve is located between the flow controller and the fermenter.

[0008] Furthermore, a filter is also provided in the mixed gas path, and the filter is located between the gas source and the first fire stop valve.

[0009] Furthermore, the fermenter is provided with an air venting path, and an air venting valve is provided on the air venting path.

[0010] Furthermore, the fermenter is equipped with a second pressure sensor.

[0011] Furthermore, the fermenter is also connected to a thermostatic bath for controlling the temperature inside the fermenter.

[0012] Furthermore, the constant temperature bath is connected to a constant temperature water machine via a water pipe.

[0013] Furthermore, the fermenter is equipped with a temperature sensor.

[0014] The beneficial effects of this utility model are:

[0015] This invention can automatically supply gas into the fermenter to ensure the atmosphere inside the fermenter, and at the same time control the liquid inside the fermenter to maintain a constant temperature, further ensuring the fermentation environment inside the fermenter. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the gas mixing device used in the fermenter in an embodiment of this utility model;

[0017] In the diagram, 1. Fermentation tank; 2. Controller; 3. Gas analyzer; 4. First fire stop valve; 5. First pressure sensor; 6. Solenoid valve; 7. Flow controller; 8. Second fire stop valve; 9. Filter; 10. Drain valve; 11. Second pressure sensor; 12. Thermostatic bath; 13. Thermostatic water heater; 14. Temperature sensor. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] See Figure 1 This utility model provides a technical solution:

[0020] Example:

[0021] like Figure 1 As shown, a gas mixing device for a fermenter includes a fermenter 1, a controller 2, a gas analyzer 3, and three gas mixing paths. The inlet ends of the three gas mixing paths are connected to different gas sources, and the outlet ends of the three gas mixing paths are connected to the fermenter 1. Each gas mixing path includes a filter 9, a first flame stop valve 4, a first pressure sensor 5, a solenoid valve 6, a flow controller 7, and a second flame stop valve 8 arranged in sequence.

[0022] The gas analyzer 3 is connected to the fermenter 1 via a pipeline (for detecting the concentration of each gas in the fermenter 1 and sending the detection results to the controller 2). The signal output terminal of the gas analyzer 3 is connected to the signal input terminal of the controller 2, and the signal output terminal of the controller 2 is connected to the flow controller 7.

[0023] The fermenter 1 is equipped with an air exhaust path, a second pressure sensor 11 for detecting the internal pressure of the fermenter 1, and a temperature sensor 14 for detecting the internal temperature of the fermenter 1. An air exhaust valve 10 is provided on the air exhaust path.

[0024] The fermentation tank 1 is also connected to a constant temperature bath 12 for controlling the temperature inside the fermentation tank 1. The constant temperature bath 12 is connected to a constant temperature water machine 13 via a water pipe.

[0025] Working principle: Three mixed gas paths are connected to hydrogen, oxygen and carbon dioxide gas sources (which can be, but are not limited to, high-pressure gas cylinders). Different gases enter fermenter 1 after being filtered, pressure detected and flow controlled by the mixed gas paths, ensuring the atmosphere inside fermenter 1.

[0026] This embodiment uses oxygen concentration control as an example for explanation. During oxygen concentration control, three adjustments are made to achieve the target oxygen concentration. In the first adjustment, the total amount of oxygen introduced is 90% of the target total oxygen. When the gas analyzer 3 detects that the oxygen concentration in fermenter 1 has reached 90%, the flow controller 7 is controlled to reduce the amount of oxygen supplied.

[0027] The second adjustment is concentration replenishment. When the gas analyzer 3 detects that the oxygen concentration in the fermenter 1 has reached 90%-95% of the target concentration, it controls the flow controller 7 to further reduce the amount of oxygen supplied until the oxygen concentration in the fermenter 1 reaches 95%-100% of the target concentration to complete the gas distribution.

[0028] Meanwhile, the fermentation tank 1 is connected to a constant temperature bath 12, which uses a constant temperature water heater 13 to control (heat) the liquid in the fermentation tank 1 to ensure that the liquid temperature in the fermentation tank 1 is constant.

[0029] This invention can automatically supply gas to the fermenter 1 to ensure the atmosphere inside the fermenter 1, and at the same time control the liquid inside the fermenter 1 to maintain a constant temperature, further ensuring the fermentation environment inside the fermenter 1.

[0030] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A gas mixing device for a fermenter, characterised in that: It includes a fermenter, a controller, a gas analyzer, and three mixing gas paths. The inlet ends of the three mixing gas paths are connected to different gas sources, and the outlet ends of the three mixing gas paths are connected to the fermenter. Each mixing gas path includes a first pressure sensor, a solenoid valve, and a flow controller arranged in sequence. The gas analyzer is connected to the fermenter via a pipeline. The signal output terminal of the gas analyzer is connected to the signal input terminal of the controller, and the signal output terminal of the controller is connected to the flow controller.

2. The gas mixing device for a fermenter according to claim 1, wherein: The mixed gas path is provided with a first flame stop valve and a second flame stop valve in sequence. The first flame stop valve is located between the gas source and the first pressure sensor, and the second flame stop valve is located between the flow controller and the fermenter.

3. The gas mixing device for a fermenter according to claim 2, wherein: The mixing gas path is also equipped with a filter, which is located between the gas source and the first fire stop valve.

4. The gas mixing device for a fermenter according to claim 1, wherein: The fermenter is equipped with an air venting path, and an air venting valve is installed on the air venting path.

5. The gas mixing device for a fermenter according to claim 1, characterized in that: The fermenter is equipped with a second pressure sensor.

6. The gas mixing device for a fermenter according to claim 1, characterized in that: The fermenter is also connected to a thermostatic bath for controlling the temperature inside the fermenter.

7. The gas mixing device for a fermenter according to claim 6, characterized in that: The constant temperature bath is connected to the constant temperature water machine via water pipes.

8. The gas mixing device for a fermenter according to claim 7, characterized in that: The fermenter is equipped with a temperature sensor.

Images