Greenhouse carbon dioxide release-increasing blending system

Abstract

The utility model discloses a greenhouse carbon dioxide release-increasing blending system, which belongs to the technical field of greenhouse planting and comprises a controller, a carbon dioxide liquefaction storage tank, a carbon dioxide conveying main pipeline, a pressure regulating electromagnetic valve, a planting area blending electromagnetic valve, a planting area carbon dioxide concentration sensor and a planting area carbon dioxide distribution pipe. The carbon dioxide liquefaction storage tank is connected with the planting area allocation electromagnetic valve through a carbon dioxide conveying main pipeline, the planting area allocation electromagnetic valve is connected with the planting area carbon dioxide distribution pipe through a carbon dioxide conveying branch pipeline, and the planting area carbon dioxide concentration sensor transmits carbon dioxide concentration information to the controller. And the controller regulates and controls the pressure regulating electromagnetic valve and the planting area allocation electromagnetic valve. According to the application, the maximum concentration of carbon dioxide in the greenhouse planting area can reach 1000ppm, the concentration can be accurately controlled within a set concentration range according to the needs of planted crops, and the method has the characteristics of being accurate in carbon dioxide concentration regulation and control, safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of greenhouse planting technology, specifically to a greenhouse carbon dioxide release and distribution system. Background Technology

[0002] Carbon dioxide is a key raw material for plant photosynthesis. Increasing the carbon dioxide concentration in greenhouses can promote photosynthesis, accelerate plant growth, and improve crop yield and quality. Studies have shown that increasing the carbon dioxide concentration in greenhouses to twice the normal atmospheric level can increase crop growth rate by more than 25% and yield by 10% to 30%. Furthermore, carbon dioxide can improve the efficiency of plant absorption and utilization of other nutrients, promote root growth, and increase the nutrient content of crops.

[0003] The carbon dioxide concentration in the greenhouse follows this pattern: After sunrise, as crop photosynthesis progresses, the carbon dioxide concentration gradually decreases. When there is ample sunlight, the crops are robust, and photosynthesis is vigorous, the carbon dioxide concentration drops rapidly, sometimes falling below the compensation point within 1-2 hours of sunlight exposure. After ventilation, outside air enters the greenhouse, replenishing the consumed carbon dioxide, but the concentration remains lower than in the outdoor atmosphere. By midday, due to abundant sunlight and vigorous photosynthesis, the carbon dioxide concentration decreases again, falling below the atmospheric concentration.

[0004] Existing carbon dioxide control technologies and their shortcomings:

[0005] 1. Ventilation method: When the carbon dioxide concentration inside the facility is lower than that in the atmosphere, forced ventilation or natural ventilation is used to increase the carbon dioxide concentration inside the facility to the same level as the atmospheric carbon dioxide concentration. However, this method can only increase the carbon dioxide concentration to about 300 ppm, which is not the optimal concentration for crop photosynthesis. It is also easily limited by the outside temperature, and its use in winter is difficult, so it cannot fully realize the effect of carbon dioxide in increasing yield and income.

[0006] 2. Soil fertilization method: This method involves applying various fertilizers that produce carbon dioxide to the soil, utilizing the carbon dioxide released during decomposition to continuously replenish the facility. For example, granular organic bio-fertilizer can be applied evenly between plant rows at a certain spacing, to a depth of 3 cm, while maintaining soil moisture at a relative humidity of around 80%. Soil microorganisms then ferment and produce carbon dioxide. However, this method is difficult to control the carbon dioxide concentration, often resulting in a small increase that is insufficient to meet the crop's growth needs.

[0007] 3. Ecological method: Implement intercropping of vegetables and edible fungi, which can produce carbon dioxide during the fermentation of fungal substrate; develop integrated greenhouse vegetable production, utilizing the carbon dioxide produced by animals to supply vegetable growth. However, the amount of carbon dioxide released is relatively limited.

[0008] 4. Chemical Reaction Method: This method utilizes the reaction of acid and carbonate to produce carbon dioxide, which is currently the main way to increase carbon dioxide application in facilities. The raw materials used are mostly sulfuric acid and ammonium bicarbonate fertilizer. After the reaction, carbon dioxide and ammonium sulfate fertilizer are produced, without generating substances harmful to crops. However, the reaction process requires careful handling to avoid acid splashing and causing damage.

[0009] In summary, current techniques for controlling carbon dioxide in greenhouse cultivation suffer from several drawbacks, including insufficient carbon dioxide concentration, difficulty in achieving control, and sometimes, certain safety hazards. Utility Model Content

[0010] The purpose of this invention is to provide a greenhouse carbon dioxide release and distribution system that provides carbon dioxide to meet the needs of greenhouse planting and features precise carbon dioxide concentration control and safety and reliability.

[0011] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0012] A greenhouse carbon dioxide enhancement and distribution system includes a controller, a carbon dioxide liquefaction storage tank, a main carbon dioxide delivery pipeline, a pressure regulating solenoid valve, a planting area distribution solenoid valve, a planting area carbon dioxide concentration sensor, and a planting area carbon dioxide distribution pipe. The carbon dioxide liquefaction storage tank is connected to the planting area distribution solenoid valve through the main carbon dioxide delivery pipeline. The planting area distribution solenoid valve is connected to the planting area carbon dioxide distribution pipe through a branch carbon dioxide delivery pipeline. The planting area carbon dioxide distribution pipe has multiple carbon dioxide discharge holes distributed on its pipe wall. The pressure regulating solenoid valve is installed on the main carbon dioxide delivery pipeline. The planting area carbon dioxide concentration sensor transmits carbon dioxide concentration information in the planting area to the controller. The controller regulates the pressure regulating solenoid valve and the planting area distribution solenoid valve.

[0013] Furthermore, there are two carbon dioxide liquefaction storage tanks, which are connected in parallel with the main carbon dioxide transmission pipeline.

[0014] Furthermore, an electromagnetic master control valve is installed at the outlet of the carbon dioxide liquefaction storage tank.

[0015] Furthermore, a manual air valve is provided on the main carbon dioxide delivery pipeline.

[0016] Furthermore, the maximum tank pressure of the carbon dioxide liquefaction storage tank is 200 bar, and the volume is not less than 1 m³. 3 .

[0017] Furthermore, the main carbon dioxide delivery pipe is made of PVC pipe.

[0018] Furthermore, it also includes a sunlight sensor, which is electrically connected to the controller. When there is no sunlight, the controller will close the electromagnetic master valve.

[0019] The beneficial effects of this utility model are as follows: This application can ensure that the concentration of carbon dioxide in the greenhouse planting area can reach a maximum of 1000ppm, and can be precisely controlled within the set concentration range according to the needs of the planted crops. It also has the characteristics of precise carbon dioxide concentration control and safety and reliability. Attached Figure Description

[0020] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort:

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] In the diagram: 1. Carbon dioxide liquefaction storage tank; 2. Main carbon dioxide delivery pipeline; 3. Pressure regulating solenoid valve; 4. Planting area distribution solenoid valve; 5. Controller; 6. Planting area carbon dioxide concentration sensor; 7. Planting area carbon dioxide distribution pipe; 8. Carbon dioxide delivery branch pipeline; 9. Carbon dioxide discharge port; 10. Planting area; 11. Solenoid main control valve; 12. Manual gas valve; 13. Sunlight sensor. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper surface", "lower surface", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "forward", "reverse", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] like Figure 1As shown, a greenhouse carbon dioxide release and distribution system includes a controller 5, a carbon dioxide liquefaction storage tank 1, a main carbon dioxide delivery pipeline 2, a pressure regulating solenoid valve 3, a planting area distribution solenoid valve 4, a planting area carbon dioxide concentration sensor 6, and a planting area carbon dioxide distribution pipe 7. The carbon dioxide liquefaction storage tank 1 is connected to the planting area distribution solenoid valve 4 via the main carbon dioxide delivery pipeline 2. The planting area distribution solenoid valve 4 is connected to the planting area carbon dioxide distribution pipe 7 via a carbon dioxide delivery branch pipeline 8. Multiple carbon dioxide discharge holes 9 are distributed on the pipe wall of the planting area carbon dioxide distribution pipe 7. The pressure regulating solenoid valve 3 is installed on the main carbon dioxide delivery pipeline 2. The planting area carbon dioxide concentration sensor 6 transmits the carbon dioxide concentration information in the planting area 10 to the controller 5. The controller 5 regulates the pressure regulating solenoid valve 3 and the planting area distribution solenoid valve 4. The main carbon dioxide delivery pipeline 2 is made of PVC pipe.

[0026] The carbon dioxide liquefaction storage tank 1 is provided in two units, with a maximum tank pressure of 200 bar and a volume of not less than 1 m³. 3 .

[0027] Two carbon dioxide liquefaction storage tanks 1 are connected in parallel with the main carbon dioxide transmission pipeline 2. An electromagnetic master control valve 11 is installed at the outlet of the carbon dioxide liquefaction storage tank 1. A manual gas valve 12 is installed on the main carbon dioxide transmission pipeline 2 to improve safety.

[0028] It also includes a sunlight sensor 13, which is electrically connected to the controller 5. When there is no sunlight, the controller 5 will close the electromagnetic master control valve 13.

[0029] The scope of application of this utility model is: the planting area in a greenhouse.

[0030] The requirements for the use of this utility model are: to ensure that the concentration of carbon dioxide in the greenhouse planting area can reach a maximum of 1000 ppm, and to be able to control the concentration within a set range according to the needs of the crops being planted, and to shut off the carbon dioxide supply under conditions of greenhouse ventilation and no light.

[0031] Furthermore, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of those different embodiments or examples, without contradiction. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A greenhouse carbon dioxide enhancement and distribution system, characterized in that: The system includes a controller, a carbon dioxide liquefaction storage tank, a main carbon dioxide delivery pipeline, a pressure regulating solenoid valve, a planting area distribution solenoid valve, a planting area carbon dioxide concentration sensor, and a planting area carbon dioxide distribution pipe. The carbon dioxide liquefaction storage tank is connected to the planting area distribution solenoid valve via the main carbon dioxide delivery pipeline. The planting area distribution solenoid valve is connected to the planting area carbon dioxide distribution pipe via a branch carbon dioxide delivery pipeline. The planting area carbon dioxide distribution pipe has multiple carbon dioxide discharge holes distributed on its pipe wall. The pressure regulating solenoid valve is installed on the main carbon dioxide delivery pipeline. The planting area carbon dioxide concentration sensor transmits the carbon dioxide concentration information in the planting area to the controller, and the controller regulates the pressure regulating solenoid valve and the planting area distribution solenoid valve.

2. The greenhouse carbon dioxide enhancement and distribution system according to claim 1, characterized in that: The carbon dioxide liquefaction storage tank is provided in two parts, and the two carbon dioxide liquefaction storage tanks are connected in parallel with the carbon dioxide transmission main pipeline.

3. The greenhouse carbon dioxide enhancement and distribution system according to claim 2, characterized in that: The carbon dioxide liquefaction storage tank is equipped with an electromagnetic master control valve at its outlet.

4. The greenhouse carbon dioxide enhancement and distribution system according to claim 1, characterized in that: The main carbon dioxide delivery pipeline is equipped with a manual air valve.

5. The greenhouse carbon dioxide enhancement and distribution system according to claim 1, characterized in that: The maximum tank pressure of the carbon dioxide liquefaction storage tank is 200 bar, and the volume is not less than 1 m³. 3 .

6. The greenhouse carbon dioxide enhancement and distribution system according to claim 1, characterized in that: The main carbon dioxide delivery pipe is made of PVC pipe.

7. The greenhouse carbon dioxide enhancement and distribution system according to claim 3, characterized in that: It also includes a sunlight sensor, which is electrically connected to the controller. When there is no sunlight, the controller will close the electromagnetic master valve.

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