Uses and characteristics of film greenhouses.
From a geographical point of view, in addition to using this kind
of greenhouse for winter in the southern region, it can also keep
warm at night in spring and autumn. In summer, the agricultural
film is removed and used, and the film is generally replaced every
year. The northern area uses a film and quilt warm shed to resist
the severe cold in winter, and the same simple large shed as the
southern area can also be used for heat preservation at night in
spring and autumn.
From the perspective of the cost of agricultural users, the
greenhouse must be the most expensive, followed by the multi-span
film greenhouse, and the lowest is the single-span film greenhouse.
Briefly introduce the difference between the three film greenhouses
in the picture above. The south side of the warm shed is covered
with film and quilts. During the day, the quilts are rolled up to
heat up by the sun, and the quilts are put down for heat
preservation at night. The other three sides can be made of earthen
wall, brick wall or insulation board. The brick wall and insulation
board can be made into two Layer, better thermal insulation
performance. Multi-span film greenhouses are generally equipped
with external shading, internal shading, top ventilation, side
ventilation, fan wet curtains and other conventional temperature
and humidity adjustment equipment. Its advantage is that it is
highly expandable, such as automatic sprinkler irrigation, soilless
cultivation, heating All can be installed as high-end equipment of
the glass greenhouse according to customer needs. The cheapest is a
single-floor film greenhouse, which can meet basic ventilation and
sprinkler irrigation requirements.
How to install a greenhouse?
1, As a building structure, greenhouses generally have two types of
civil construction foundations. One is that all the uprights are
point-based. The other is that the surrounding walls are ring beam
foundations and the middle columns are point foundations. According
to the topography, areas with heavy rainfall and low-lying terrain
need to increase water dispersion and drainage ditches. Because of
the different soil quality in different places and the lighter load
of the greenhouse compared with the steel structure, some Party A
did not strictly follow the drawings when building the civil
foundation, which caused the foundation to sink and pull the column
to sink, deforming the skeleton and leaking rain. In addition, the
bolted embedded parts must be found to avoid misaligned image
installation with the column.
2, After the civil construction is completed, all that remains is
the construction above the zero level. All the greenhouses on the
ground are assembled with standard parts without welding, so the
experience requirements for workers are relatively high, and there
are many types of broken parts. If you need to look at the
installation drawings step by step, the construction period will be
serious. From the erection of the skeleton, the connection of the
truss and the girder, etc. must be done in one go. Whether it is a
simple thin-film greenhouse or a responsible smart greenhouse, all
components must be connected quickly and accurately, and finally
the installation of covering materials and greenhouse equipment is
completed. The second important point is that the glass and solar
panels must be sealed well, including the waterproofing of the rain
gutters.
