CN209861795U

CN209861795U - Seedling bed heating system

Info

Publication number: CN209861795U
Application number: CN201920369776.9U
Authority: CN
Inventors: 李建辉; 刘丽丽; 石子建
Original assignee: QUZHOU INSTITUTE OF AGRICULTURAL SCIENCES
Current assignee: QUZHOU INSTITUTE OF AGRICULTURAL SCIENCES
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2019-12-31
Anticipated expiration: 2029-03-22

Abstract

The utility model relates to an agricultural cultivation field of growing seedlings specifically relates to a seedling bed system of heating. The seedling raising bed heating system comprises a seedling raising bed, a heat exchange pipe laid below the seedling raising bed, a heat collection pipe used for absorbing sunlight to heat circulating water and a first water pump, wherein the heat exchange pipe is connected with the heat collection pipe through a water pipe, and the water pipe is provided with the first water pump driving water to flow in a circulating manner. Through the technical scheme, the utility model discloses among the seedling bed system of heating, come the heated cycle water through solar energy collection pipe and go into the hot exchange pipe under the seedling bed with the circulating water pump to this heats the seedling bed.

Description

Seedling bed heating system

Technical Field

The utility model relates to an agricultural cultivation field of growing seedlings specifically relates to a seedling bed system of heating.

Background

Seedling raising refers to the whole operation process from sowing or cutting to planting, and actually creates environment conditions suitable for germination and emergence of seeds or cutting slips and seedling growth artificially. The method has the advantages of less land for seedling cultivation, seed and cutting, convenient fine management and pest control, good for cultivating strong seedlings, early maturing, prolonged supply, increased cropping index, and improved yield and quality.

At present, the common facilities for seedling culture comprise: greenhouse, plastic film arched shed, electric heating hotbed, etc. The greenhouse and plastic film arched shed seedling raising is to sow seeds or to cut cutting shoot in seedling raising container with matrix and to provide proper illumination, temperature, humidity and ventilation conditions for seedling raising with glass or plastic film. However, the structure of the greenhouse is relatively complex and the cost is high. The electric heating hotbed increases the ground temperature and the near-surface temperature by consuming electric energy, and has higher consumption of electric energy although the automatic temperature control can be realized. There are some seedling raising boxes, but the seedling raising box is suitable for small-scale batch seedling raising work in a laboratory and cannot be used for large-scale batch seedling raising production.

SUMMERY OF THE UTILITY MODEL

The utility model provides a seedling bed system of heating, this seedling bed system of heating have effectively utilize solar energy to provide the consumption that the heat reduces the electric energy for seedling bed. Simultaneously the utility model also provides a method for using the heating and heat-preserving body system of the seedling bed, and the method can reduce the day and night temperature difference of the seedling bed.

In order to realize the above purpose, the utility model provides an aspect provides a seedling bed system of heating, including seedling bed, lay in seedling bed heat exchange pipe, the thermal-collecting tube and the first water pump that is used for absorbing sunlight heating circulating water under the seedling bed, the heat exchange pipe passes through water pipe line and connects the thermal-collecting tube, water pipe line sets up the first water pump that drives the hydrologic cycle flow.

Preferably, the seedling bed heating system further comprises a water storage tank, and the water storage tank is connected with the heat collecting pipe and the heat exchange pipe through pipelines respectively.

Preferably, a second water pump is arranged in the middle of a pipeline connecting the water storage tank and the heat collecting pipe.

Preferably, the water pipe and the water storage tank are externally coated with heat insulation layers.

Preferably, the heating and heat-preserving system for the seedling bed further comprises a heater, and the heater heats circulating water through electric heating and/or combustion.

Preferably, a heat insulation layer is further arranged in the seedling raising bed and is arranged below the heat exchange tube.

Through the technical scheme, the utility model discloses among the seedling bed system of heating, come the heated cycle water through solar energy collection pipe and go into the hot exchange pipe under the seedling bed with the circulating water pump to this heats the seedling bed.

Drawings

FIG. 1 is a schematic structural view of a heating system of a seedling bed of the present invention;

fig. 2 is a sectional view on the seedling bed of the seedling bed heating system of the utility model.

Description of the reference numerals

1-seedling bed 2-heat exchange tube

3-heat collecting pipe 4-water storage tank

5-second Water Pump 6-first Water Pump

7-thermal insulation layer 8-heater

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, left, and right" generally means upper, lower, left, and right as illustrated with reference to the accompanying drawings; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. The present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments.

The utility model provides an aspect provides a seedling bed system of heating, including seedling bed 1, lay in seedling bed 1 under hot exchange pipe 2, be used for absorbing sunlight heating circulating water's thermal-collecting tube 3 and first water pump 6, hot exchange pipe 2 leads to pipe line and connects thermal-collecting tube 3, pipe line sets up the first water pump 6 that drives the hydrologic cycle and flows.

In the specific implementation process, the heat exchange tube 2 is embedded in soil of the seedling bed 1 in advance, the depth of the heat exchange tube 2 is preferably 20cm-30cm, and as shown in figure 2, the heat loss can be reduced while the root system of the plant seedling does not contact the heat exchange tube 2. The arrangement of the heat exchange tubes 2 may be such that the heat exchange tubes 2 are arranged in parallel as shown in figure 1, with liquid entering from one side and exiting from the other, which is a simple arrangement with high energy efficiency, but with the liquid entering one side at a higher temperature than the exiting one; therefore, it is preferable that the positions of the liquid inlet and the liquid outlet of a part of the heat exchange tubes 2 are exchanged, and it is further preferable that the number of the part of the heat exchange tubes 2 is half of the total number, and the heat exchange tubes 2 with the positions of the liquid inlet and the liquid outlet exchanged are sequentially arranged at intervals with another part of the heat exchange tubes 2. The arrangement of the heat collecting pipes 3 for heating the circulating water does not influence the lighting of the seedling bed 1, the preferred heat collecting pipes 3 are arranged on the open ground adjacent to the seedling bed 1, and further the preferred plurality of heat collecting pipes 3 are arranged into a plane which is inclined relative to the horizontal plane, and the normal line of the plane faces the sun; meanwhile, the heat collecting pipe 3 is arranged on one side, far away from the sun, of the seedling bed 1, the occupied area can be effectively reduced, and a temperature sensor for measuring the temperature of the seedling bed 1 is embedded in soil of the seedling bed 1.

In a preferred scheme, due to the day and night law of solar energy, the heat collecting pipe 3 can not work continuously when the temperature is reduced at night, the seedling bed heating system further comprises a water storage tank 4 for heating the seedling bed 1 at night and other environments, and the water storage tank is connected with the heat collecting pipe 3 and the heat exchange pipe 2 through pipelines respectively. The storage tank 4 can store hot water. A liquid level meter and a thermometer are arranged in the water storage tank 4 and used for measuring the water level and the water temperature in the water storage tank 4, and a safety valve is arranged on a tank body of the water storage tank 4 to adjust the internal pressure of the water storage tank 4. One preferred solution is to provide an electric heater 8 in the water storage tank 4, which electric heater 8 can be temporarily turned on to increase the water temperature in case of insufficient solar energy. The reason for using water as the medium is that water has a high specific heat capacity while being easily available at low cost.

The water pipe is provided with a first water pump 6 which drives water to circularly flow. The first water pump 6 can drive circulating water to flow between the heat collecting pipe 3 and the heat exchanging pipe 2. In order to enable circulating water in the water storage tank 4 to circulate with the heat collecting tube 3, a second water pump 5 is arranged between the water storage tank 4 and a pipeline connected with the heat collecting tube 3 and used for driving the circulating water to flow between the heat collecting tube 3 and the water storage tank 4, and preferably, a third water pump is arranged between the heat collecting tube 2 and the water storage tank 4.

In order to reduce the loss of heat, the pipeline and the water storage tank 4 are externally coated with heat insulation layers.

In order to cope with the problem that the heat collecting pipes 3 are not enough to heat the seedling bed 1 to a predetermined temperature, a separate heater 8 may be provided in the seedling bed warming system to heat the circulating water by electric heating and/or combustion, in addition to the previously proposed method of providing the electric heater 8 in the water storage tank 4. The preferred heater 8 is connected to the water storage tank 4, and the heater 8 heats the circulating water stored in the water storage tank 4, which has the advantage that the heater 8 does not need to be turned on all the time. When the mode of preferred when adopting the burning heating, the waste gas after the boiler burning can lead to and educate seedling bed 1 department, can further improve the temperature of educating seedling bed 1 and effectively utilize the energy, and carbon dioxide in the waste gas is favorable to the growth of plant simultaneously.

Meanwhile, in order to reduce the energy loss of the seedling raising bed 1, a heat insulation layer 7 is further arranged in the seedling raising bed 1, and the heat insulation layer 7 is arranged below the heat exchange tube 2. The distance between the heat insulation layer 7 and the heat exchange tube is 25cm-10 cm.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide the technical solution of the present invention with a plurality of simple modifications, including combining each specific technical feature in any suitable manner, and in order to avoid unnecessary repetition, the present invention does not provide additional description for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. A seedling raising bed heating system is characterized by comprising a seedling raising bed (1), a heat exchange pipe (2) laid under the seedling raising bed (1), a heat collection pipe (3) used for absorbing sunlight to heat circulating water and a first water pump (6), wherein the heat exchange pipe (2) is connected with the heat collection pipe (3) through a water pipe, and the water pipe is provided with the first water pump (6) driving water to circularly flow;

the seedling raising bed (1) heating system further comprises a water storage tank (4), and the water storage tank (4) is respectively connected with the heat collecting pipe (3) and the heat exchange pipe (2) through pipelines; a second water pump (5) is arranged in the middle of a pipeline connecting the water storage tank (4) and the heat collecting pipe (3); a third water pump is arranged between the heat exchange pipe (2) and the water storage tank (4).

2. The seedling bed heating system as claimed in claim 1, wherein the water pipe and the water storage tank (4) are externally coated with heat insulating layers.

3. The system for heating the nursery bed as claimed in claim 1, further comprising a heater (8) in the system for heating and insulating the nursery bed, wherein the heater (8) heats the circulating water by electric heating and/or combustion.

4. Nursery seedling bed warming system according to claim 1, characterized in that a heat insulating layer (7) is further provided in the nursery seedling bed (1), and the heat insulating layer (7) is provided under the heat exchanging pipe (2).