CN202890064U - Design of asymmetrical double-layer interior thermal insulation greenhouse - Google Patents

Abstract

The utility model discloses the design of an asymmetrical double-layer inner heat preservation greenhouse, which belongs to the field of modern facility agricultural engineering. It is designed for the disaster weather and the lack of water resources in Northwest my country. The greenhouse is divided into shade shed and sun shed, which are back-to-back, and the span of the sun shed is larger than that of the shade shed. The two sheds are composed of inner and outer two-layer steel skeletons. The outer shed is composed of a double string skeleton and a film. The inner shed is composed of a single skeleton structure, insulation quilt, roller shutter machine, and film. The roller shutter machine is installed on the inner shed skeleton roller shutter machine on the stand. The roof of the rear roof is groove-shaped to store rainwater and snowmelt water, which is stored in the greenhouse reservoir through the drainage pipe. The advantages of the utility model are: 1. Improve the thermal insulation capacity of the greenhouse. 2. Improve land use efficiency. 3 Improve the ability of the greenhouse to resist natural disasters such as rain, snow, wind and sand. 4 Effective use of natural rainfall and snowfall resources is an effective way to solve the shortage of agricultural water in arid and semi-arid areas.

Description

Design of an asymmetrical double-layer inner heat preservation greenhouse

1 Technical field:

The invention relates to the design of an asymmetric double-layer inner heat preservation greenhouse, which can increase the indoor temperature, greatly improve the heat preservation and heat storage capacity of the greenhouse, and improve the land use efficiency, belonging to the technical field of modern facility agricultural engineering. the

2 background technology:

Solar greenhouse is a form of high-efficiency and energy-saving greenhouse that has developed rapidly in my country's "Three North" regions in recent years. At present, the national area has exceeded 700,000 hm ² , and it has become an important means of winter vegetable production and farmers' enrichment in the northern region, as well as an important technical choice for the adjustment of agricultural industrial structure in the construction of new countryside. The solar greenhouse has the characteristics of good thermal insulation performance and low cost. It has been widely promoted in the vast rural areas of the northern region, but there are still many problems in the actual production process:

(1) The solar greenhouse occupies a large area and the problem of low effective land utilization rate has always restricted the rapid development of this type of greenhouse. In the weak light season in winter, it is necessary to ensure that the front greenhouse does not block the light from the rear greenhouse, and a certain distance must be left between the two. The higher the latitude, the greater this spacing. In order to improve the thermal insulation performance of the greenhouse in the Northwest alpine region, the length of the back slope must be lengthened, resulting in severe shading in some areas of the greenhouse. In some areas, in order to avoid shading between the greenhouses, the distance between the greenhouses is blindly increased. reduce. the

(2) It is greatly affected by natural weather conditions, which restricts its further popularization and application. The solar greenhouse is a passive solar greenhouse, and its thermal performance is directly affected by the outdoor weather conditions. In Northwest China, the natural sunshine time in winter in alpine regions is very short, less than 9 hours from sunrise to sunset, and the extreme temperature outside is very low. The deep frozen layer of the soil increases the conduction heat of the soil in the greenhouse and causes more heat loss, which makes the soil temperature in the greenhouse too low, resulting in slow growth of crops planted in the energy-saving greenhouse in winter, lower yields, and lower benefits. the

(3) In the northwestern region of my country, the serious shortage of water resources has become the biggest obstacle restricting the sustainable development of agriculture. However, flood irrigation is mostly used in facility agricultural irrigation. With the advancement of agricultural water price reform, traditional irrigation methods make farmers suffer. heavy burden. the

3 Contents of the invention:

The purpose of the present invention is to overcome the deficiencies in the prior art, (1) through the design of the asymmetrical yin-yang side greenhouse, improve land utilization rate, increase the planting area of crops. (2) The built-in heat preservation is covered by double-layer film to improve the heat preservation effect of the greenhouse, and the inner liner air between the film is used as a buffer space, which is beneficial to increase the temperature of the greenhouse at night. (3) Utilize the solar greenhouse roof rain collection technology, pipe drainage, and water storage in the reservoir to improve the utilization efficiency of natural water resources. Therefore, the key point of the present invention is to provide an efficient and economical utility model plastic greenhouse, which has good thermal insulation performance in winter, and can grow different vegetables in the yin-yang shed according to the season and physiological characteristics of vegetables, so as to improve the profit of foreign exchange. the

Technical solution: An asymmetrical double-layer inner heat preservation greenhouse design, which is characterized in that the back wall of the traditional solar greenhouse is used, and the back-to-back type is adopted. The sun shed is set on the south side, and the shade shed is set on the north side. The span of the shade shed is smaller than that of the sun shed. span, improve light utilization efficiency. The walls of the yin-yang shed are constructed of bricks and concrete. The structure design of the yin-yang shed is similar to that of the sun shed, and they are covered by double-layer membranes for insulation. the

Both the sun shed and the shade shed are composed of an outer shed and an inner shed. The outer shed is composed of an outer frame and a film covering it, and the outer frame is a double-chord frame. The inner shed is composed of an inner frame, a film, a roller shutter machine and a thermal insulation quilt. The inner frame adopts a single skeleton structure, which is mainly used to carry the thermal insulation quilt. The roller blind machine is a left and right pull wire structure. the

The roof of the greenhouse is groove-shaped, and drainage holes are set on both sides, which are connected to the reservoir in the greenhouse through drainage pipes to store rainwater and snowmelt water, which can be used for facility agricultural irrigation. the

Compared with the prior art, the beneficial effects of the utility model are reflected in:

(1) By adding shade sheds, the shady area behind the back wall is converted into a production area, making full use of the back wall of ordinary greenhouses and increasing the planting area; the temperature of the shade shed is low in winter and the light is poor, so it can be planted with low temperature resistance. Edible mushroom vegetables with less light. Oversummer vegetables can be planted in summer, and two seasons can be planted a year, increasing the variety of greenhouse vegetables. (2) The outer film covering improves the anti-wind and sand ability of the whole greenhouse, which is suitable for the northwestern region of my country; the inner film covering the insulation quilt makes the temperature inside the greenhouse in winter 4-8 ℃ higher than that of the previous double-layer greenhouse, which can basically meet the requirements. Warm-loving vegetables in Northwest my country survive winter safely. (3) The buffer liner-type heat insulation layer between the greenhouse films can alleviate the magnitude of external climate changes, increase the temperature of the greenhouse at night, and reduce the area of high-temperature areas during the day in time. (4) Utilizing the storage of natural precipitation and winter snowmelt water for facility agricultural irrigation can effectively solve the problem of agricultural water shortage in Northwest China. the

Description of drawings:

Attached Figure 1: Schematic diagram of the structural section of the main view

Attachment 2: Plane schematic diagram

Numbers in the picture: 1. Outer frame galvanized pipe, 2. Inner frame galvanized pipe, 3. Film, 4. Thermal insulation quilt, 5. Roller shutter machine, 6. Drainage hole, 7. Drainage pipe, 8. Production door, 9. Cistern

Detailed ways:

The greenhouse of this example is a kind of asymmetrical double-layer inner insulation greenhouse, as shown in Fig. 1 and Fig. 2, it includes two greenhouses in the north and the south, and an outer shed and an inner shed. The south is the sun shed, the north is the shade shed, the span of the sun shed is 8-10m, and the span of the shade shed is 5-6m. Among them, the outer shed adopts a double skeleton structure, and the inner shed adopts a single skeleton structure. It is especially aimed at the climate characteristics of many disaster weathers in Northwest my country. The outer shed plays a role in preventing wind and sand, so that the heat preservation quilt in the inner shed plays a role of sufficient heat preservation and moisture resistance. The outer skeleton galvanized pipe 1 is a double-skeleton structure, and the steel skeleton is covered with a film 3, wherein the film 3 is pressed on the arch beam of the outer skeleton galvanized pipe 1 by a laminating line, and the inner shed is composed of an inner skeleton galvanized pipe 2, a film 3, Insulation quilt 4 and wire-guide roller shutter 5 constitute, and the wire-guide roller shutter is placed on the autocratic support of inner skeleton galvanized pipe 2, selects the supporting stay cord with it, divides the insulation quilt of respectively pulling both sides about. the

As shown in Figure 2, the wall at the junction of the roof behind the yin-yang shed forms a groove shape, and the east and west sides are sealed with concrete and mortar to accumulate rainwater. The drainage hole 6 is built into the bottom and connected to the drainage pipe 7. The drainage pipe Extending downward, the bottom part flows to the yin and yang sheds and transports them to the reservoir 9 respectively. The drainage pipes can also be connected to only one shed, which can be flexibly arranged according to the actual conditions such as the water demand characteristics of growing vegetables and the setting of production doors. the

When constructing the collecting tank, flexibly control according to the length of the shed and the local rainfall, and lay an anti-seepage film to prevent water leakage. Lined with concrete and mortar, can be connected to a drip irrigation water supply system according to the actual situation. the

Claims (5)

1. the design of the interior heat-insulating greenhouse of asymmetric bilayer, it is characterized in that: utilize the rear wall of greenhouse body to build cloudy canopy in the north side, the south is Yang Peng, and cloudy canopy span is less than positive canopy span.

2. the design of heat-insulating greenhouse in a kind of asymmetric bilayer according to claim 1 is characterized in that: Yang Peng and cloudy canopy inside form by Nei Peng and outer canopy, and outer canopy skeleton is two string skeleton structures, and interior canopy skeleton is the monoskeleton structure.

3. the design of heat-insulating greenhouse in a kind of asymmetric bilayer according to claim 2, it is characterized in that: interior canopy is comprised of inner frame, film, shutter and thermal insulation quilt.

4. the design of heat-insulating greenhouse in a kind of asymmetric bilayer according to claim 3 is characterized in that: above-mentioned shutter adopts left and right sides stay-supported structure, and shutter is installed on the shutter support of interior canopy inner frame ceiling.

5. the design of heat-insulating greenhouse in a kind of asymmetric bilayer according to claim 1, it is characterized in that: greenhouse roof is the groove shape, and osculum is respectively established in both sides, is connected in the greenhouse in the cistern by drainage pipeline.

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