www.joskin.com

Slurry distribution
-8-
SCALPER © macerator
A good macerator is essential to make sure the injector
works properly because all kinds of slurry (but
mainly cattle slurry) are full of fibres and foreign
bodies. Now, a blocked opening means an uneven
spreading pattern: then, the user has to
stop working and to clean the machine, which
is quite constraining!
The JOSKIN solution is the patented
system of the macerator with cutting and
self-sharpening discs: the JOSKIN
SCALPER © .
The cutting system of the
SCALPER © is merciless: free
rotating circular blades are
mounted on a rotating blade
head driven by a hydraulic
motor. There is a scissors
effect between the circular
blades and the elliptical arched
and off-centre openings
of the blade head, inevitably
cutting all foreign bodies in
the slurry.
When the blades strike against too hard
obstacles, the rotation direction of the
SCALPER © is reversed by the ‘‘Switch-
Matic’’ system (option) until the obstacle
is chopped.
The JOSKIN macerator is placed
by fitting and clipping. A multi-position
manual valve, fixed at the macerator
inlet, offers a step by step adjustment
of the injector feeding. The precise adjustment
is carried out by means of the
pressure relief valve and the chosen
type of contra-rotating blade.
Model -2, -1, 0 et 1 Model 2 Model 3
Flow: 7 to 20 m³/ha
Flow: 12 to 30 m³/ha
Flow: 25 to 50 m³/ha
The hydraulic circuit is isolated thanks to a cap. A drain makes it
possible to check wether the water seal is faulty.
The JOSKIN SCALPER © macerators are also sold separately
in order to equip existing injectors.
Macerator feeding
The macerator is standard fed through a 6’’ rubber hose and a 6’’
adjusting valve.
Vertical SCALPER © macerator
The working principle of
the vertical macerator,
fitting the Penditwist line
spreading booms, is the
same as for the horizontal
macerator: a rotating
blade head, driven by a
hydraulic motor, supports
eight self-sharpening
circular blades turning
freely against a contrarotating
blade. However,
as the macerator is fitted with openings on both sides, it is equipped
with two cutting systems. The slurry under pressure goes into
the central chamber of the macerator via a 6’’ inlet, before being
taken care of by the blades that cut the foreign bodies and evenly
distribute the slurry between the different openings (20, 26, 30 or
36 openings, according to the models). These are horizontal and
have a diameter of 42 mm. A 6’’ cap, acting as a stone trap, gives
access to the inside of the macerator.
The advantages of this vertical macerator are the small overal dimensions
and limited load losses in the injection pipes (less bends
in the pipes). As a result, slurry is more homogeneously distributed
in the line spreading booms.
Reference
Type
Number of
Macerator
outlets Ø mm Motor Type (cc)
B-model macerator with Ø 48 mm outlets downwards and Ø 6’’ inlet above
J60620121+2 12B 12 420 160
J60620141+2 14B 14 420 160
J60620161+2 16B 16 420 315
J60620201+2 20B 20 490 315
J60620240+2 24B 24 565 315
J60620281+2 28B 28 655 315
J60620320+2 32B 32 730 500
J60620360+2 36B 36 811 500
J60620400+2 40B 40 900 500
BC-model macerator with Ø 60 mm outlets downwards and Ø 6’’ inlet above
J60626142+3 14BC 14 565 160
J60626172+3 17BC 17 565 160
J60626206+3 20BC 20 565 315
J60626246+3 24BC 24 565 315
J60626326+3 32BC 32 730 500
J60626366+3 36BC 36 811 500
J60626406+3 40BC 40 900 500
VR-model vertical macerator with Ø 42 mm horizontal outlets and Ø 120 mm lateral
inlet (2 counterblades per macerator)
J60621203(04)-1 20VR L (R) 20 430 395
J60621263(64)-1 26 VR L (R) 26 430 395
J60621301(02)-1 30 VR L (R) 30 430 395
J60621363(64)-1 36 VR L (R) 36 430 500