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Agrispiral
srl
Via Togliatti, 54
12038 Savigliano (CN)
Tel. 0172 713230 - Fax 0172 713990
P. IVA 00295130041
www.agrispiral.it - info@agrispiral.it |
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Production of metal spirals and conveyor components |
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The endless spiral is the best and most economical solution
should you need to convey large quantities of material in
a short time. Our company's sophisticated production technology,
capillary checks and overall control on the finished product,
besides over 30 years' experience allow Agrispiral to supply
a proven quality product, a punctual service, in compliance
with every customer's requirements.
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Endless spirals can be either carbon
steel or stainless steel. They are cold rolled.
The versatility of our production range allows us to produce
spirals 45 to over 1000 mm outer diameter and in a gauge ranging
from 3 to 12 mm. |
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| Fe 360 steel and
other similar metals |
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STANDARD LENGTH: 3 m bars (± 2%). |
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OUTER DIAMETER:
according to the strip width and inner diameter. |
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INNER DIAMETER:
in view of the shaft, even less than 1/5 of the outer diameter. |
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PITCH: same as
the outer diameter. For special conveyors, a different pitch,
even less than 2/3 of the outer diameter or more than 1.5
times the diameter can be provided. |
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GAUGE: approx.
twice as the outer gauge on the inner diameter. |
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COILING DIRECTION:
to the right and to the left to be specified upon order. |
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| Clockwise
rotation: |
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| Righthanded spiral |
Left-handed
spiral |
Conveyor
direction |
| Warning: by reversing
the spiral, the direction of rotation does not change. |
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| TOLERANCE |
| RATED OUTER DIAMETER |
INNER DIAMETER |
PITCH |
OUTER DIAMETER |
| fino a 150
mm. |
-0 + 20/10 |
± 5 % |
- 8/10 + 20/10 |
| 150 - 250
mm. |
-0 + 25/10 |
± 5 % |
- 8/10 + 25/10 |
| 250 - 500
mm. |
-0 + 32/10 |
± 5 % |
- 20/10 + 42/10 |
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STANDARD
PITCH (SQUARE):
pitch equal to the outer diameter for almost all types of
conveyors. |
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REDUCED
PITCH:
used for mixers and conveyors with
a slant of more than 20° (usually a reduction down to 2/3
of the outer diameter, if the outer diameter exceeds 300 the
reduction shall be higher). |
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EXTENDED
PITCH:
for fast conveyors of running materials or for liquid mixers. (even more than 1.5 times the outer diameter |
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SPIRAL
STRIP:
for viscous or damp material transportation for snowplow. etc. (sticking between coil and shaft is avoided) |
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Influence of the slant on conveyor rate
The hourly conveyor RATE varies considerably depending on
the product to be conveyed: size, humidity, auger diameter,
slant, speed of rotation, filling degree, etc.
Please see the table below for the indicative values for grain
conveyors with an 80 diameter spiral (100 diameter tube)
650/700 rpm see table below |
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| Slant |
0° |
15° |
30° |
45° |
60° |
90° |
| Conveyor
rate t/h |
10 |
9 |
7,5 |
6,5 |
6 |
3,5 |
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| click
here to display the standard sizes |
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The company can also supply every kind of non standard
spirals upon the customer's specifications.
Endless spirals can be applied in various agricultural and
industrial activities thanks to its versatility and effectiveness,
for instance: cereal storage in silos, the production of
snowplows, drills, mixing wagons, cement augers, feeders
in heating installations using pellets and biomass, microproportioners,
treatment of sludge and compactors, harvest bars for combined
harvesters, oil production installations and wine making
appliances, extruders.
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| Site
Map |
Copyright
© Agrispiral srl, 2005 |
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