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2018
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Spray‑based Humidification Automation Control System for Sprout Cultivation
Author:
Humidity Control in Sprout Cultivation - Spray Humidification Control System
Sprout cultivation involves using plant seeds or bud shoots and, through the creation of an artificially optimized environment, inducing germination to produce sprouts, seedlings, or tender shoots that are consumed as a vegetable. This method is characterized by a short growing cycle, rapid growth, crisp and tender texture, and high nutritional value.
Moreover, the cultivation of sprouts is not constrained by climate or season; throughout the year, plastic greenhouses in fields, urban apartment buildings, or even abandoned factory spaces—after appropriate modifications—can all serve as production sites. However, traditional sprout‑cultivation methods are rather labor‑intensive, requiring substantial manpower and making it a labor‑heavy industry. This is particularly evident in the management stages of the growing process, such as seed soaking, sowing, stacking trays for germination, misting and watering, adjusting tray positions, and removing spoiled seeds. Under entirely manual operation, it is difficult to achieve scientific and precise control over environmental factors. For instance, the specific requirements of sprouts regarding temperature, humidity, light, and moisture can only be managed empirically, making standardization challenging. As a result, sprout production remains largely at the level of small family‑run operations, hindering efforts toward large‑scale, industrialized, automated, and standardized production.
After years of continuous refinement and improvement, Guangzhou Aogong has developed an efficient, environmentally friendly mist‑spraying humidification and cooling system. This equipment delivers outstanding dust removal, cooling, humidification, and disinfection performance through a straightforward design, featuring a simple structure, ease of use, low operating costs, and strong adaptability. It places no special demands on water quality or pressure, produces a high spray volume with long reach, generates fine, evenly dispersed mist, resists clogging, requires no maintenance, and is easy to operate—simply connect it to power and a water source. It is the ideal solution for atomized humidification and cooling. Guangzhou Aogong’s products have enjoyed steady sales for many years and are highly regarded by users.
Working principle of the mist‑cooling and humidifying device: It uses a high‑pressure pump and precision micro‑nozzles to generate extremely fine mist particles that disperse evenly throughout the surrounding area, achieving uniform humidification. This method relies on advanced manufacturing techniques to produce nozzles that conform to fluid dynamics principles, while the high‑pressure pump pressurizes water to a level of… 7MPa , it is conveyed through a high-pressure pipeline system to the nozzle, where it is atomized into fine mist. The manufacture of such nozzles requires advanced technology, and the system entails a relatively high capital cost. The high-pressure micro-mist spraying system enables the tiny droplets to achieve 5~30 Microns in size, thereby greatly enhancing evaporation efficiency; as a result, water evaporation is significantly boosted. During the vaporization process, heat is absorbed, leading to a reduction in temperature and an increase in relative air humidity. Moreover, throughout the entire process, there is no dripping, the atomization is fine, the spray range is long, and it can… 24 Long-term continuous operation over several hours.
Industrialized sprout production process;
1. Seed soaking : The seeds are screened to remove shriveled grains and other impurities, then poured into a metal mesh basket and placed in… 20 In the constant-temperature water bath, the water in the tank circulates continuously, each… 1h Circulates once, passing through 3~5h Remove after impregnation.
2. Germination promotion : Pour the soaked seeds into… 50cmX20cmX4cm In the wooden box, first line the bottom with a layer of highly absorbent paper before pouring in the seeds; the seed layer should be about… thick. 3cm On the left and right, place a layer of absorbent paper over the seeds, then transfer them to a location with a temperature of approximately… 22 °C, with a relative humidity of 70%~75% In the germination chamber, wooden boxes used for germination can be placed on multi-tiered metal racks. 24h~36h.
3. Sowing: Place the pre-germinated seeds directly into the automatic seeder, which sows them one seed per hole. 260~280 The seeds are sown into the polystyrene seedling trays at a controlled rate.
4. Control of water and fertilizer supply, as well as other environmental conditions; after the seeds are sown into the seedling trays, they must be misted daily. 1~2 Next, and after germination 1~4d, To initiate nutrient solution delivery, you can use overhead misting or apply direct control.
5. Greening: From sowing to seedling cultivation, it takes approximately 4~5 After a few days, the seedling trays should be moved into the greenhouse for growth. 2~3d. Nutrient solution temperature control.
Precautions for sprout production;
One, Pay attention to disinfection to prevent bacterial growth.
Two, The temperature during the production process should be properly controlled.
During the growth of the callus, the temperature should be maintained at 25~30 Within a certain temperature range, excessively high temperatures can lead to etiolation, resulting in weak seedlings, reduced yields, poor market appearance, and diminished quality. Conversely, overly low temperatures slow growth, extend the growing cycle, and negatively impact economic returns. (An automated misting cooling and humidification system, such as the Aogong model, can be employed, providing fully automatic control of constant temperature and humidity throughout the entire process—eliminating the need for manual intervention.)
Three, Control lighting
Four, Control moisture
Throughout the entire growth period, it is essential to carefully regulate water supply. Excessive humidity can lead to rot, so particular care should be taken during seedling cultivation to avoid overwatering. Conversely, when growing under light, insufficient moisture must be avoided to prevent young plants from dehydrating and wilting.
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