greenhouse climate control equipment

SANHE greenhouse ventilation fans are divided into five types according
to their different models the push-pull fan (centrifugal
fan),the swinging heavy balance hammer fan,double shutter fan,
double-sided net fan,horn-cone fan. The main differences among these
five models of fan lies in the following the different ways of the shutter
opening, different thicknesses of the fans frame, different outlooks, and
the different sealing degrees of the shutters.
The above is just a push-pull fan. The shutter opening is mainly driven by
the centrifugal push-pull body in the middle part. When the fan runs,
the push-pull body will be forced to make the shutter open. No matterhow many years in the future the device is used, the shutter of the fan
will always be kept opening at a 90 degree. The advantage of this
kind of the fan lies in ,that the shutter opening at a 90 degree will
guarantee no obstacle from the shutter to the fan blade, thus in a result
of big air flow and high operating rate. The fan of this type needs only
4 hours to discharge the air, with one hour shortened , compared with
the other kinds of the fans of different import power. Thus this fan
will relatively reduce the operating cost.
ompared with other factories in china, the fan of this type produced by
Compared with other factories in china, the fan of this type produced by
our factory has the following advantages
1. 1.the guide bar or the pole on the push-pull, being separated from
the whole device, and fixed in the metal flange on the back
accurately, thus ensure that the bearings both in the front and in the
back always keep concentric operation under any circumstances,
and that the push-pull body will operate without any working
question. For example, imagine that be the guide bar and the
push-pull device in a whole integration, when the nylon shrinks
and deforms, the front bearing and the back one will easily be out
of the controlling of the whole concentricity, which will leave a bad
effect on the quality of the air blower. The different concentricity
of the front bearing and the back one occurs just because of the
nylon raw material made in the device of the push-pull. once the
nylon product is finished and comes out from the mold, it will
stretch and deform, affected by the temperature and humidity in the
air. What is more, when the temperature and humidity of the air
change in variety, the deformation will vary in a large scale, which
is hard to be controlled. Therefore we take this good way of
separating the guiding bar or pole from the push-pull device as a
positive result of avoiding the possible damage on the push-pull
device.
2. The fan of this type adopt B-shaped belt instead of A-shaped,
which will ensure that the belt of the fan will last longer time
because the belt of B-shaped is three times as thick as the A-shaped
one.
3. With automatic belt Tensioner device on our fans that can
automatically adjust the force of the belt , we can ensure that the
belt of our fans can run more steadily in the future. However,
originally, we did not use the device of the belt tensioner, which
result in that the belt of the air-blower will skid and be lost ,as the
belt will get longer and looser after the fan running for some time.
What is worse, the belt will even fall down when it becomes loose
to a certain degree as the result of the damage of the shutter.
Therefore, the unnecessary consequences are all avoided after the

automatic belt tensioner device is adopt.
4. There is always a layer of colorless and transparent film attached to
the surface of our push-pull fan blades, which will ensure that
unnecessary wears and tears on the blade will happen without any
possibility. 5. All our blades being trained by balancing correction can keep them
running steadily, and also reduce the vibration of the fan, thus
extending the service life of the air blower.
5. 6.our blower fan with the special design of recessed carrying handle,
not only makes the removal work of the fan easy, but also does not
affect the installation and appearance of the blower.(put handle out
when carrying, and in when not carrying.)
7.the fans we are currently producing have two sizes: one is
1380*1380*450mm,the other one is 1000*1000*450mm.
1380*1380*450mm,
1000*1000*450mm