Multilayer plastic thermal insulation greenhouse and manufacturing method thereof

Abstract

The invention discloses a multilayer plastic thermal insulation greenhouse which comprises a plastic membrane, a greenhouse beam and frame strips. The greenhouse beam is arc-shaped, a cross section of the greenhouse beam is I-shaped, a connection neck, an upper wall and a lower wall are arranged on the greenhouse beam, extending ends are arranged at two ends of the upper wall and / or the lower wall of the greenhouse beam, and the space enclosed by every two extending ends forms a pressing sheet groove. A primary pressing membrane groove and a second pressing membrane groove are arranged on the inner walls of the extending ends and are corrugation-shaped. Protruding necks are arranged in the pressing sheet grooves on the upper wall and / or the pressing sheet grooves on the lower wall, primary pressing membrane grooves and secondary pressing membrane grooves are arranged on two sides of the protruding necks and correspond to the primary pressing membrane grooves and the second pressing membrane grooves on the extending ends. The multilayer plastic thermal insulation greenhouse is simple in structure, convenient to use, less in construction, firm and durable, strong in wind and snow resistance, high in strength, strong in pressure resistance, corrosion resistive, long in service life, easy to install, low in construction cost, good in thermal-insulation and moisturizing effect and capable of replacing a damaged plastic membrane easily.

Description

Technical field: [0001] The invention relates to the technical field of agricultural plastic greenhouse films, in particular to a multi-layer plastic thermal insulation greenhouse and a manufacturing method thereof. Background technique: [0002] The composition of the greenhouse is basically as follows: the plastic greenhouse film is covered on the outer surface of the beam skeleton structure, and the four sides of the greenhouse film are compacted on the surface or buried underground. So far, the thermal insulation greenhouse has been formed. However, most of the existing thermal insulation greenhouses use a single-layer plastic greenhouse film. This single-layer plastic greenhouse film has poor thermal insulation effect in winter, and the temperature difference between day and night is large. Facilities, such as stoves or heating channels, etc. In addition, it is also necessary to cover straw curtains, quilts, etc. on the outer surface of the single-layer plastic greenho...

AI Technical Summary

Problems solved by technology

The traditional greenhouse beams are wood products, bamboo products or metal products. The disadvantages of wood products and bamboo products are that the strength of the arch frame is low, the ability to resist wind and snow is poor, and it is easy to decay. It needs to be repaired and replaced every year, and the operation and management are inconvenient

Although metal products have high strength and strong compression resistance, they are easy to corrode and cost high. Even if galvanized or aluminum-coated steel pipes are used, the problem of corrosion cannot be solved. , Sunshine and other environments, the service life is still not ideal, generally need to be replaced in 5-8 years, and installation often requires welding, more civil work, etc., that is, it is not easy to install

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