Device for mixing and conveying carbon dioxide in fresh water microalgae culture air

Abstract

The utility model provides a device for mixing and conveying carbon dioxide in fresh water microalgae culture air. According to the device, an air compressor and a standby air compressor are installed on an installation frame, air filters are installed on the air compressor and the standby air compressor respectively, one-way gas valves are installed on pipelines, communicated with an air output pipe, of the air compressor and the standby air compressor respectively, and a condensate water inlet pipe and a condensate water outlet pipe are installed on a condenser respectively. The two ends of the condenser are communicated with the outlet end of the air output pipe and the inlet end of the mixed gas pipe respectively, a gas flow adjusting valve is installed on the carbon dioxide output pipe, one end of the carbon dioxide output pipe is communicated with the carbon dioxide storage tank, and the other end of the carbon dioxide output pipe is communicated with the mixed gas pipe. Carbon dioxide introduced by the device is mixed with air according to the amount of 1%-5% of the air content, the technical problem that a carbon source is needed in the growth process of microalgae is solved, and the device is reasonable in design, easy to operate, high in automation degree and suitable for most microalgae cultivation enterprises or research institutions.

Description

Technical Field

[0001] This utility model relates to the field of mechanical and mechatronics technology, and in particular to a device for the mixed transport of carbon dioxide in the air for freshwater microalgae cultivation. Background Technology

[0002] The growth of freshwater microalgae requires comprehensive consideration of factors such as light, temperature, nutrients, pH, and the culture system. Different species and environments require targeted optimization of conditions. Artificial cultivation requires environmental control to ensure stable pH to promote growth. The stability of pH is closely related to the amount of carbon dioxide introduced. The impact of carbon dioxide concentration on the growth of freshwater microalgae can be discussed from several aspects. First, carbon dioxide gas can serve as a carbon source for the growth of freshwater microalgae, and an appropriate amount of carbon dioxide will promote the growth of freshwater microalgae. On the other hand, if too much carbon dioxide gas is introduced into the algal solution, carbon dioxide will combine with water to form carbonic acid, causing the pH of the algal solution to drop rapidly. The pH of the algal solution can be maintained by adjusting the amount of carbon dioxide introduced from the air. The content of carbon dioxide introduced into the air is generally around 1%-5%. Therefore, excessively high carbon dioxide concentration in the air will inhibit the growth of freshwater microalgae, and in severe cases, it will lead to large-scale death of microalgae.

[0003] Currently, existing technologies rely on the naturally present carbon dioxide in the air to sustain freshwater microalgae. There is no dedicated device for detecting pH levels in microalgae liquids, making accurate control of the carbon dioxide content impossible. It largely depends on the operator's experience to determine whether to add carbon dioxide. Furthermore, the carbon dioxide inlet pipe and air inlet pipe are separate; normally, the carbon dioxide inlet pipe is closed, only opening when carbon dioxide needs to be introduced into the microalgae liquid. This operating method significantly impacts microalgae production.

[0004] Therefore, the person skilled in the art has designed a device for the mixed transport of carbon dioxide in the air for freshwater microalgae cultivation. Summary of the Invention

[0005] The purpose of this invention is to provide a device for mixing and conveying carbon dioxide in the air for freshwater microalgae cultivation. The technical problem this invention aims to solve is: utilizing an air compressor, air filter, and condenser to filter and condense the air, and mixing the introduced carbon dioxide at a concentration of 1%-5% with the air, thus addressing the technical issue of the carbon source required for the growth of freshwater microalgae.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A device for mixing and conveying carbon dioxide in freshwater microalgae cultivation air includes: a mounting frame, an air compressor, an air output pipe, a condensate inlet pipe, a condensate outlet pipe, a condenser, a mixing pipe, an air filter, a carbon dioxide output pipe, a gas flow regulating valve, an air inlet pipe, a carbon dioxide storage tank, a standby air compressor, a one-way gas valve, a standby one-way gas valve, and a control console. The device has an air compressor and a standby air compressor mounted on the mounting frame, each with an air filter. The air filters are connected to the air compressor and the standby air compressor respectively via the air inlet pipe. The air compressor and the standby air compressor are connected to the air output pipe. One-way gas valves are installed on the pipelines connecting them. Condensate inlet and outlet pipes are installed on the condenser. The condensate inlet and outlet pipes are connected to the circulating water system. One end of the condenser is connected to the outlet end of the air output pipe, and the other end is connected to the inlet end of the mixing pipe. A gas flow regulating valve is installed on the carbon dioxide output pipe. One end of the carbon dioxide output pipe is connected to the carbon dioxide storage tank, and the other end is connected to the mixing pipe. The tail end of the mixing pipe is connected to the gas input end of the microalgae cultivation.

[0008] The air compressor, gas flow regulating valve, standby air compressor, one-way gas valve, and standby one-way gas valve in the device are connected to the control unit in the control console by wires.

[0009] The air compressor, gas flow regulating valve, one-way gas valve, air filter, and condenser in the device are all mature products in the existing technology.

[0010] Compared with the prior art, the positive effects of this utility model are as follows:

[0011] 1. This device uses an air compressor, air filter and condenser to filter and condense the air. The carbon dioxide introduced is mixed with the air at 1%-5% of the air content, which solves the technical problem of freshwater microalgae needing a carbon source during the growth process.

[0012] 2. The filter in this device filters the air blown in by the air compressor, removing impurities to ensure the purity of the air in the transported microalgae liquid. At the same time, the condenser cools the blown air to ensure that the air is transported at room temperature, and the air is transported through a one-way gas valve.

[0013] 3. The device introduces carbon dioxide from the carbon dioxide storage tank into the mixing pipe through a pipeline to mix with air, and the amount of carbon dioxide delivered is controlled by the control console through a gas flow regulating valve.

[0014] 4. The air compressor, air filter, and one-way gas valve in this device are combined in a way that they are in use and in standby as a group, and can be combined into multiple groups of air delivery mechanisms when needed.

[0015] 5. The device is reasonably designed, easy to operate, and highly automated, making it suitable for most freshwater microalgae cultivation enterprises or research institutions. Attached Figure Description

[0016] To more clearly illustrate the technology of this utility model in its embodiments, the accompanying drawings are briefly introduced below. The drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without any creative effort.

[0017] The accompanying drawings, including their structure, proportions, and sizes, are only intended to complement the content disclosed in this specification and to enable those skilled in the art to understand and read them. They are not intended to limit the conditions under which this utility model can be implemented. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 Schematic diagram of the main structure of the mixing conveying device;

[0019] Figure 2 A top view of the structural design of the mixing conveying device;

[0020] Figure 3 A diagram showing the connection between each component and the control console.

[0021] In the diagram: 1. Mounting bracket, 2. Air compressor, 3. Air output pipe, 4. Condensate inlet pipe, 5. Condensate outlet pipe, 6. Condenser, 7. Mixing pipe, 8. Air filter, 9. Carbon dioxide output pipe, 10. Gas flow regulating valve, 11. Air inlet pipe, 12. Carbon dioxide storage tank, 13. Standby air compressor, 14. One-way gas valve, 15. Standby one-way gas valve, 16. Control console. Detailed Implementation

[0022] The technical solution of this utility model will be further described clearly and completely below with reference to the accompanying drawings. The specific embodiments described below are only used to further illustrate this application and should not be construed as limiting the scope of protection of this application. Those skilled in the art can make some non-essential improvements and adjustments to this application based on the above application content.

[0023] See appendix Figure 1-3The installation and connection of the device involves mounting air compressor 2 and standby air compressor 13 on mounting brackets 1, respectively. Air filters 8 are installed on air compressor 2 and standby air compressor 13, respectively. Air filters 8 are connected to air compressor 2 and standby air compressor 13 via air inlet pipes 11. One-way gas valves 14 are installed on the pipelines connecting air compressor 2 and standby air compressor 13 to air outlet pipe 3. Condensate inlet pipe 4 and condensate outlet pipe 5 are installed on condenser 6, respectively, and are connected to the circulating water system. One end of condenser 6 is connected to the outlet end of air outlet pipe 3, and the other end is connected to the inlet end of mixing pipe 7. Gas flow regulating valve 10 is installed on carbon dioxide outlet pipe 9, one end of which is connected to carbon dioxide storage tank 12, and the other end is connected to mixing pipe 7. The tail end of mixing pipe 7 is connected to the gas input end for freshwater microalgae cultivation.

[0024] The air compressor 2, gas flow regulating valve 10, standby air compressor 13, one-way gas valve 14, and standby one-way gas valve 15 in the device are connected to the control unit in the control console 16 by wires.

[0025] Before use, adjust the gas flow regulating valve 10 to allow the carbon dioxide to be introduced to account for 1%-5% of the air content, and store the data in the control panel 16. Simultaneously, store the process parameters for air compressor 2, standby air compressor 13, one-way gas valve 14, and standby one-way gas valve 15 in the control panel 16. During use, the operator starts air compressor 2 via the control panel 16 and simultaneously opens one-way gas valve 14. Air enters air compressor 2 through air filter 8 and air inlet pipe 11. Air compressor 2 then delivers the incoming air to condenser 6 via one-way gas valve 14 and air outlet pipe 3. Condensate enters condenser 6 through condensate inlet pipe 4 to cool the incoming air, and then is discharged into the circulating water system through condensate outlet pipe 5. The output end of the condenser 6 delivers the cooled air to the mixing pipe 7. The carbon dioxide in the carbon dioxide storage tank 12 enters the mixing pipe 7 through the carbon dioxide output pipe 9 and the gas flow regulating valve 10, and mixes with the air in the mixing pipe 7. The tail end of the mixing pipe 7 is connected to the gas input end of the freshwater microalgae cultivation, and the mixed gas is delivered to the freshwater microalgae cultivation device through the gas input end of the freshwater microalgae cultivation.

[0026] When air compressor 2 has been running for a period of time or when air compressor 2 malfunctions and needs to be shut down for maintenance, the operator stops the operation of air compressor 2 through control panel 16, closes one-way gas valve 14 and gas flow regulating valve 10, and starts standby air compressor 13 at the same time, and opens standby one-way gas valve 15 and gas flow regulating valve 10. The operation of mixing air and carbon dioxide is the same as the above operation process.

[0027] The above description is only a non-limiting embodiment of the present utility model, and a large number of embodiments can be derived. For those skilled in the art, without departing from the inventive concept of the present utility model and without making creative efforts, several modified and improved embodiments can be made, all of which fall within the protection scope of the present utility model.

Claims

1. A device for transporting mixed carbon dioxide from air in freshwater microalgae cultivation, comprising: The device comprises a mounting frame (1), an air compressor (2), an air output pipe (3), a condensate inlet pipe (4), a condensate outlet pipe (5), a condenser (6), a mixing pipe (7), an air filter (8), a carbon dioxide output pipe (9), a gas flow regulating valve (10), an air inlet pipe (11), a carbon dioxide storage tank (12), a standby air compressor (13), a one-way gas valve (14), a standby one-way gas valve (15), and a control console (16). The device is characterized in that an air compressor (2) and a standby air compressor (13) are respectively mounted on the mounting frame (1), and each of the air compressors (2) and the standby air compressor (13) is equipped with an air filter (8). The air filters (8) are connected to the air compressor (2) and the standby air compressor (13) respectively through the air inlet pipe (11). The compressor (13) is connected. One-way gas valves (14) are installed on the pipelines connecting the air compressor (2) and the standby air compressor (13) to the air output pipe (3). Condensate inlet pipe (4) and condensate outlet pipe (5) are installed on the condenser (6). The condensate inlet pipe (4) and condensate outlet pipe (5) are connected to the circulating water system. One end of the condenser (6) is connected to the outlet end of the air output pipe (3), and the other end is connected to the inlet end of the mixing pipe (7). A gas flow regulating valve (10) is installed on the carbon dioxide output pipe (9). One end of the carbon dioxide output pipe (9) is connected to the carbon dioxide storage tank (12), and the other end is connected to the mixing pipe (7). The tail end of the mixing pipe (7) is connected to the gas input end of the microalgae cultivation.

2. The device for mixing and transporting carbon dioxide in freshwater microalgae cultivation air according to claim 1, characterized in that: The air compressor (2), gas flow regulating valve (10), standby air compressor (13), one-way gas valve (14), and standby one-way gas valve (15) in the device are connected to the control unit in the control console (16) by wires.

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