Cold region floating seedling raising warming system

Abstract

The utility model provides a cold region floating seedling raising warming system which comprises a heating room, a heating furnace is installed in the heating room, a burner is installed on the heating room, a feeding hopper is arranged on the burner, a fan is installed at the side end of the heating room, an air outlet is further formed in the heating room, and the air outlet is communicated with the heating room. A heat conveying belt matched with the air outlet in diameter is installed at the air outlet, and part of the belt body of the heat conveying belt is arranged in the seedling raising area; by arranging the heating room, the heating furnace, the burner, the feeding hopper, the fan, the heat conveying belt and the air holes, air can be used as a heating medium for conveying, so that the temperature in the greenhouse is effectively increased, the water temperature in the greenhouse is guaranteed, meanwhile, many factors such as cost and safety are considered, and the purposes of further popularizing floating seedling raising and other seedling raising modes and improving the seedling raising efficiency are achieved. A cold region floating seedling production scheme is perfected, the maturity of tobacco leaves is enhanced, the tobacco leaf quality is improved, and high generalization performance is achieved.

Description

Technical Field

[0001] This utility model relates to the field of seedling warming technology, and in particular to a floating seedling warming system for cold regions. Background Technology

[0002] In tobacco cultivation, seedling technology plays a crucial role in tobacco leaf yield and quality. Traditional tray seedling raising methods have many drawbacks: early sowing and a long seedling period lead to high labor demands for transplanting and require multiple leaf prunings, consuming significant manpower and resources. Furthermore, with the development of tobacco seedling technology, it has become increasingly inadequate to meet the application requirements of modern tobacco seedling raising. In contrast, floating seedling raising technology, with its significant advantages such as shorter seedling period, lower cost, and higher land utilization, has become the mainstream choice for modern tobacco seedling raising. This technology not only effectively reduces labor and costs but also improves tobacco leaf maturity, facilitating mechanical transplanting.

[0003] However, floating seedling cultivation technology has stringent environmental requirements, especially the water temperature in the seedling greenhouse or polytunnel must reach the optimal temperature for tobacco seed germination during the seedling stage. Taking the tobacco-growing areas of Heilongjiang Province as an example, working backward from the transplanting time, floating seedling cultivation typically requires sowing at the end of March (March 25-28), at which time the water temperature inside the greenhouse must reach 25-28℃. However, Heilongjiang is located in a cold region, and the chill of late March still lingers, making it difficult to achieve this temperature requirement under natural conditions.

[0004] Meanwhile, Heilongjiang Province, as the province with the largest outflow of population in China, faces severe challenges in agricultural production due to the migration of rural residents to cities, including difficulties and high costs of hiring labor. The traditional tray seedling raising method, with its high labor requirements, is becoming increasingly problematic and unable to meet the needs of modern tobacco cultivation. Furthermore, the frequent occurrence of extreme weather events in recent years, with early spring temperatures dropping, has led to a gradual decline in seedling quality and forced extension of the seedling raising cycle, severely impacting the maturity of flue-cured tobacco and consequently damaging the appearance and internal quality of the leaves. Although floating seedling raising technology can alleviate these problems to some extent, its high temperature requirements within the greenhouse have become a bottleneck restricting its widespread application in cold regions. Therefore, developing a floating seedling raising and warming system suitable for cold regions to ensure the temperature requirements for floating seedling production in tobacco has become a crucial issue that urgently needs to be addressed in cold-region tobacco cultivation. Utility Model Content

[0005] The purpose of this utility model is to provide a floating seedling raising and warming system for cold regions, which aims to improve the problem that the water temperature in the greenhouse cannot reach the optimal temperature for seed germination when floating seedlings are raised in cold regions. This solves the problems of poor seedling quality, long cycle, and low maturity of flue-cured tobacco caused by this, alleviates labor shortages, and improves the quality of tobacco leaves.

[0006] This utility model is implemented as follows:

[0007] A cold-region floating seedling warming system includes a heating chamber, a heating furnace installed inside the heating chamber, a burner installed on the heating chamber, a feed hopper installed on the burner, a fan installed on the heating furnace, an air outlet installed on the heating chamber, a heat transfer cable with a diameter adapted to the air outlet installed at the air outlet, a portion of the heat transfer cable is located in the seedling area, and air holes are provided on the portion of the heat transfer cable located in the seedling area; a drying room temperature controller is installed on the heating chamber.

[0008] Furthermore, the seedling area also includes a greenhouse, seedling pools, exhaust ducts, fans, temperature and humidity sensors, and a temperature and humidity controller. The seedling pools are installed inside the greenhouse. The inner wall of the greenhouse has through holes, and an exhaust duct with a diameter adapted to the through holes is installed at the through holes. The exhaust duct is located above and to the side of the seedling pools. A fan is installed inside the exhaust duct. The temperature and humidity sensors are distributed and installed inside the greenhouse, and the temperature and humidity controller is installed on the side of the greenhouse.

[0009] Furthermore, a smoke exhaust pipe is provided on the upper side of the heating chamber, and the building material of the heating chamber is color steel.

[0010] Furthermore, the heating chamber is provided with a through groove for connecting the burner to the heating furnace, and the material of the heat transfer cable is Oxford cloth; the heat transfer cable can also be called a conveyor belt, or a pipeline can be used instead.

[0011] Furthermore, the heating chamber is built around the heating furnace, and the space inside the burner, heating furnace, and fan is used for the transport of heat medium.

[0012] Furthermore, the air vents are arranged in a double-row staggered pattern on one side of the heat transfer cable, and an air outlet slot is provided on the side to connect with the air supply end of the heat transfer cable.

[0013] Compared with existing technologies, the advantages of this invention are as follows: This invention innovatively integrates core components such as a heating chamber, heating furnace, burner, feeding hopper, fan, and heating tape to construct a highly efficient heating system using air as the heat transfer medium. The system generates heat energy by driving the heating furnace with a burner, and uses a fan to directionally transport hot air through the air vents of the heating tape into the shed, achieving precise heat transfer and uniform distribution. Compared with traditional heating methods, this solution uses air as the heat transfer medium, significantly reducing energy consumption and operating costs, while avoiding safety hazards such as gas leaks and electrical short circuits. It balances economy and safety while ensuring stable water temperature inside the shed.

[0014] This invention not only effectively solves the temperature control problem in cold-region floating seedling cultivation, but is also applicable to various seedling cultivation scenarios, providing a standardized and replicable solution for cold-region floating seedling production. It demonstrates significant effectiveness in improving tobacco leaf maturity and quality, and is of great importance for optimizing tobacco production processes and promoting the high-quality development of the tobacco industry, showcasing extremely high value for widespread application. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a side view of the present invention.

[0017] Figure 3 This is an exploded view of part of the structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the rear view structure of this utility model;

[0019] Figure 5 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 6 This is a partial structural cross-sectional view of the present invention.

[0021] Attached reference numerals: 1. Greenhouse body; 2. Heating chamber; 3. Heating furnace; 4. Burner; 5. Feed hopper; 6. Fan; 7. Heater cable; 8. Air vent; 9. Seedling pond; 10. Exhaust duct; 11. Fan; 12. Temperature and humidity sensor; 13. Temperature and humidity controller; 14. Drying room temperature controller. Detailed implementation method:

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0024] like Figures 1-6As shown, this utility model embodiment provides a cold-region floating seedling heating system, including a heating chamber 2, a heating furnace 3 installed inside the heating chamber 2, a burner 4 installed on the heating chamber 2, an air inlet near the burner 4, a feed hopper 5 on the burner 4, a fan 6 installed on the heating furnace 3, an air outlet on the heating chamber 2, and a heat transfer cable 7 with a diameter adapted to the air outlet. Part of the heat transfer cable 7 is set in the seedling area, and air holes 8 are provided on the part of the heat transfer cable 7 located in the seedling area. A drying room temperature controller 14 is installed on the heating chamber 2. As the air pressure inside the heating chamber 2 increases, the heated gas will carry heat through the heat transfer cable 7 and finally be discharged through the air hole 8 on one side, so that it enters the greenhouse 1.

[0025] like Figures 4-6 As shown, the seedling area also includes a greenhouse 1, seedling pools 9, exhaust ducts 10, fans 11, temperature and humidity sensors 12, and a temperature and humidity controller 13. The seedling pools 9 are installed inside the greenhouse 1. The inner wall of the greenhouse 1 has through holes, and exhaust ducts 10 with a diameter matching the through holes are installed at the through holes. The exhaust ducts 10 are located above the side of the seedling pools 9. Fans 11 are installed inside the exhaust ducts 10. Temperature and humidity sensors 12 are distributed and installed inside the greenhouse 1, and the temperature and humidity controller 13 is installed on the side of the greenhouse 1. The temperature and humidity sensors 12 distributed inside the greenhouse 1 will detect the humidity and temperature in the air in real time. When the humidity or temperature is high, the fans 11 inside the exhaust ducts 10 will be activated through the temperature and humidity controller 13, thereby achieving the effect of cooling and dehumidification.

[0026] like Figure 2 , 3 As shown in Figure 5, a smoke exhaust pipe is installed on the upper side of the heating chamber 2. The building material of the heating chamber 2 is color steel. Because the heating chamber 2 is placed inside the shed and needs to occupy the space inside the shed, the biomass combustion pellets face the problem of incomplete combustion due to insufficient oxygen. The burner 4 is placed inside the shed, which poses fire safety hazards. Therefore, the heating chamber 2 is set outside the shed body 1 at a distance of three to five meters.

[0027] like Figure 3 , Figure 5 , Figure 6 As shown, the heating chamber 2 has a through-slot for connecting the burner 4 to the heating furnace 3, and the heating cable 7 is made of Oxford cloth. The Oxford cloth heating cable 7 not only has the characteristics of being wear-resistant, durable, waterproof, and stain-resistant, but it can also effectively transfer the heat medium, has excellent and stable fire resistance, and is relatively more affordable.

[0028] like Figures 2-3 As shown, the heating chamber 2 is built around the heating furnace 3. The space between the heating chamber 2 and the heating furnace 3 is used for the transportation of heat medium. Outside air is introduced into the heating chamber 2, and the temperature of the air will be rapidly increased after the air enters the heating chamber 2.

[0029] like Figures 5-6 As shown, the air vents 8 are arranged in a double-row, staggered pattern on one side of the heating cable 7, with an air outlet slot on the side for connecting to the air outlet end of the heating cable 7. By providing the air outlet slot on the side of the heating chamber 2, the installation work with the Oxford cloth can be effectively carried out. Furthermore, the diameter of both the air outlet slot and the heating cable 7 is forty centimeters, which can effectively reduce the residual heat accumulation inside the heating chamber 2. Through simulation experiments, two types of customized Oxford cloth heating cables 7 were laid inside the shed 1.

[0030] There are several layout options for the heat transfer tube 7 and the seedling pool 9. For example: Option 1: Lay the heat transfer tube 7 with openings on both sides in the middle of the shed 1, and plan to build seedling pools 9 on both sides; Option 2: Lay the heat transfer tube 7 with openings on one side in the passageway at one end of the shed 1, and build the other side as a whole seedling pool 9.

[0031] Temperature sensors were installed at four points inside greenhouse 1. After the system stabilized, the temperature of the four sensors in greenhouse 1 was measured over a period of time, and their mean difference and standard deviation were calculated. According to the experimental results, the mean difference and standard deviation of Scheme 2 were both less than those of Scheme 1, indicating that the data dispersion of Scheme 2 was less than that of Scheme 1, and the temperature inside the greenhouse was more uniform.

[0032] In operation, this invention works as follows: First, biomass pellets are poured into the feed hopper 5. The temperature and humidity controller 13 detects the temperature inside the shed 1. When the temperature inside the shed is below 14 degrees Celsius, the temperature controller 14 automatically starts the burner 4 and begins heating. Then, under the action of the burner 4, the biomass pellets are burned, generating a large amount of heat energy, which simultaneously increases the temperature inside the heating furnace 3 and the heating chamber 2. The fan 6 is started, and outside air is introduced into the heating chamber 2 through the burner 4. After the air enters the heating chamber 2, it is heated by the furnace 3. The air temperature is increased. As the fan 6 runs, the heated gas carries heat through the heating cable 7 and is finally discharged through the vent 8 on one side, allowing it to enter the greenhouse 1. This increases the temperature inside the greenhouse 1 and the water temperature in the seedling pool 9, thus completing the heating work. Then, the temperature and humidity sensors 12 distributed inside the greenhouse 1 will detect the humidity and temperature in the air in real time. When the humidity or temperature is high, the fan 11 in the exhaust duct 10 will be activated through the temperature and humidity controller 13, thereby achieving the effect of cooling and dehumidification.

[0033] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cold-region floating seedling raising and heating system, comprising a heating room (2), characterized in that: A heating furnace (3) is installed inside the heating chamber (2). A burner (4) is installed on the heating chamber (2). A feed hopper (5) is provided on the burner (4). A fan (6) is installed on the heating furnace (3). An air outlet is also provided on the heating chamber (2). A heat transfer cable (7) with a diameter matching the air outlet is installed at the air outlet. Part of the heat transfer cable (7) is set in the seedling area. Air holes (8) are provided on the part of the heat transfer cable (7) located in the seedling area. A drying room temperature controller (14) is installed on the heating chamber (2).

2. The cold-region floating seedling raising and warming system according to claim 1, characterized in that: The seedling area also includes a shed (1), a seedling pool (9), an exhaust duct (10), a fan (11), a temperature and humidity sensor (12), and a temperature and humidity controller (13). The seedling pool (9) is installed inside the shed (1). The inner wall of the shed (1) has a through hole. An exhaust duct (10) with a diameter matching the through hole is installed at the through hole. The exhaust duct (10) is located above the side of the seedling pool (9). A fan (11) is installed inside the exhaust duct (10). The temperature and humidity sensor (12) is distributed and installed inside the shed (1). The temperature and humidity controller (13) is installed on the side of the shed (1).

3. The cold-region floating seedling raising and warming system according to claim 1, characterized in that: The heating room (2) is provided with a smoke exhaust pipe on its upper side, and the building material of the heating room (2) is color steel.

4. The cold-region floating seedling raising and warming system according to claim 1, characterized in that: The heating chamber (2) has a through slot for connecting the burner (4) to the heating furnace (3), and the heat transfer cable (7) is made of Oxford cloth.

5. The cold-region floating seedling raising and warming system according to claim 1, characterized in that: The heating chamber (2) is built around the heating furnace (3), and the space inside the heating chamber (2) separated from the heating furnace (3) is used for the transport of heat medium.

6. The cold-region floating seedling raising and warming system according to claim 1, characterized in that: The air vents (8) are arranged in a double-row staggered pattern on one side of the heat transfer cable (7), and the heating chamber (2) is provided with an air outlet trough on the side for connecting to the air supply end of the heat transfer cable (7).

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