Abstrict Disclosed is a crusher. A material is sucked in an upper part on
one side of a case part which is formed by horizontally coupling
a plurality of cases. The sucked material is horizontally moved
and discharged to a lower part on other side. A driving force of
a motor is transferred to a side of a rotary shaft which passes
through the center from one side to other side of the case part.
The crusher includes: a rotary blade part for maintaining an interval
from an internal peripheral surface of a central part of the case
part and being fixed to a central part of the rotary shaft and rotated
in one direction to generate a turbulence in multiple stages; a
ring gear part being fixed to an internal peripheral surface of
the center of the case part and maintaining a gap from a circumference
of the rotary blade part to form a crushing zone in multiple stages;
and a discharging fan being fixed to other end part of the rotary
shaft and rotated in one direction to discharge a completely crushed
grain.
Claims What is claimed is:
1. A crusher, comprising: a case part for forming a cylindrical
space, said case part having an inlet to suck a material to be crushed
and an outlet to discharge the material; a power supplying part
comprising a rotary shaft installed at the center of the case part
for supplying a driving force of a motor to said rotary shaft; a
rotary blade part fixed to the rotary shaft and rotated to generate
a turbulence in multiple stages; a ring gear part for maintaining
a gap from a circumference of the rotate blade part, said ring gear
part and said rotary blade part forming consecutively connected
multiple crushing zones, wherein said material spirally rotates
and is crushed consecutively when said material passes through said
crushing zones; and a discharging fan fixed to an end part of the
rotary shaft and rotated to discharge the crushed material.
2. The crusher of claim 1 wherein the case part includes: a first
case accommodating said inlet on one side of an upper part and provided
with a ventilation guide member having a guide hole; a second case
interconnecting with the first case by said guide hole through which
the material is transferred by a centrifugal force generated by
said rotary blade part; and a third case accommodating a discharging
mechanism and being consecutively connected to the second case.
3. The crusher of claim 2 wherein the rotary blade part includes:
a rotary boss fixed to the rotary shaft; a first circular disk and
a second circular disk mounted on said rotary boss, respectively,
said first circular disk facing said second circular disk; a plurality
of first rotary blades having a slope at a predetermined angle in
one direction, said plurality of first rotary blades mounted on
an outside surface of the first circular disk; a plurality of second
rotary blades having a slope at a predetermined angle in the same
direction as the plurality of first rotary blades, said plurality
of second rotary blades mounted on said outside surface of the first
circular disk, wherein said material passes through said guide hole,
said plurality of first rotary blades, and then said plurality of
second rotary blades; a plurality of third rotary blades radially
formed at uniform intervals between the first circular disk and
the second circular disk, each third rotary blade having an uneven
portion on the surface of each third rotary blade; and a plurality
of fourth rotary blades having a slope at a predetermined angle
on an outside of the second circular disk.
4. The crusher of claim 3 wherein the ring gear part includes:
a first ring gear fixed to the second case corresponding to an external
peripheral surface of the first rotary blades; a second ring gear
fixed to the second case corresponding to an external peripheral
surface of the third rotary blades; and a third ring gear mounted
on the third case corresponding to an external peripheral surface
of the plurality of fourth rotary blades.
5. The crusher of claim 4 wherein the third ring gear has unevenly
recessed friction grooves with a sharp blade edge.
6. The crusher of claim 4 wherein the third ring gear has circularly
recessed friction grooves.
7. A crusher, comprising: a case having an inlet through which
an air and a material to be crushed are fed and an outlet through
which the material is discharged; a shaft horizontally positioned
at the center of said case; a guide partitioning said case, said
guide having a center hole through which the material fed from said
inlet is transferred; a rotary boss mounted on said shaft; a first
circular disk and a second circular disk mounted on said rotary
boss for rotating along with said shaft, said first circular disk
facing said second circular disk; a plurality of blades comprising
first blades, second blades, third blades, and fourth blades, said
first blades and said second blades mounted on said first circular
disk, said third blades mounted between said first circular disk
and said second circular disk, said fourth blades mounted on said
second circular disk, said first, second, third, and fourth blades
generating a centrifugal force and a turbulence flow to radially
rotate said material; and a plurality of ring gears comprising a
first ring gear, a second ring gear, and a third ring gear, said
first, second and third ring gears forming crushing zones with said
second, third and fourth blades, respectively, wherein said material
is crushed in the crushing zones while the material is radially
rotating by the centrifugal force and the turbulence flow; and a
fan mounted on said shalt to discharge the crushed material through
said outlet.
8. The crusher of claim 7 wherein the third ring gear has unevenly
recessed friction grooves with a sharp blade edge.
9. The crusher of claim 7 wherein the third ring gear has circularly
recessed friction grooves.
10. The crusher of claim 7 wherein each of said first blades has
a slope at a predetermined angle in one direction.
11. The crusher of claim 10 wherein each of said second blades
has a slope at a predetermined angle in the same direction as the
first blades.
12. The crusher of claim 10 wherein said third blades are radially
formed at uniform intervals, and the outward surfaces of the third
blades are uneven.
13. The crusher of claim 7 wherein said third blades are radially
formed at uniform intervals, and the outward surfaces of the third
blades are uneven.
14. The crusher of claim 7 further comprising: a support plate
attached to the first blades and the second blades.
15. The crusher of claim 7 wherein said fourth blades are slantwise
formed at a predetermined angle on a circumference of said second
circular disk.
16. The crusher of claim 7 wherein the edges of the fourth blades
are more outwardly protruded than the edges of the second circular
disk.
17. A crusher, comprising: a case having an inlet through which
an air and a material to be crushed are fed and an outlet through
which the material is discharged; a shaft horizontally positioned
at the center of said case; a guide partitioning said case, said
guide having a center hole through which the material fed from said
inlet is transferred; a rotary boss mounted on said shaft; a first
circular disk and a second circular disk mounted on said rotary
boss for rotating along with said shaft, said first circular disk
facing said second circular disk; a plurality of blades comprising
first blades, second blades, third blades, and fourth blades, said
first blades and said second blades mounted on said first circular
disk, said third blades mounted between said first circular disk
and said second circular disk, said fourth blades mounted on said
second circular disk, said first, second, third, and fourth blades
generating a centrifugal force and a turbulence flow to radially
rotate said material, said first and said second blades having a
slope at a predetermined angle in one direction, said third blades
radially formed at uniform intervals, said fourth blades slantwise
formed at a predetermined angle on said second circular disk, wherein
the edges of the fourth rotary blades are more outwardly protruded
than the edges of the second circular disk; a plurality of ring
gears comprising a first ring gear, a second ring gear, and a third
ring gear, said first, second and third ring gears forming crushing
zones with said second, third and fourth blades, respectively; and
a fan mounted on said shaft, said fan discharging the crushed material
through said outlet, wherein said material is crushed in the crushing
zones while the material is radially rotating by the centrifugal
force and the turbulence flow.
18. The crusher of claim 17 wherein the third ring gear has unevenly
recessed friction grooves with a sharp blade edge.
19. The crusher of claim 17 wherein the third ring gear has circularly
recessed friction grooves.
Description TECHNICAL FIELD
The present invention relates to a crusher.
BACKGROUND ART
As well known, a crusher is used to crush materials used in various
industries as well as fibroid materials and sponge materials into
minute grains. The crusher has been suggested in various types.
By way of example, a rice hull crusher was assigned Korean Patent
Application No. 34568 filed in 1996.
As shown in FIGS. 1a and 1b (FIGS. 2 and 5 of Korean Patent Application
No. 34568), the rice hull crusher comprises: a crushing vessel having
a crushing part 12 which is formed in a direction of an inlet 111
and a discharging part 11 which is formed in a direction of an outlet
112; a coupler 15 being directly connected to a power shaft 14 which
is installed at the center of the crushing vessel 11 to be rotated
at a high speed; an impeller 16 being fixed to a side of the coupler
in a direction of the crushing part 12 to generate a whirlwind;
a ring frame 17 being fixed to the crushing vessel 11 on an outer
wall of the impeller 16 and allowing pulverized rice hull to pass
through the discharging part 13; and a discharging fan 18 being
fixed to a side of the coupler in a direction of the discharging
part 13 to discharge the pulverized rice hull of the discharging
part 13 to the outlet 112.
In the crush hull crusher, a crushing path is made in a horizontal-type
and a crushing zone is made in a one step-type, such that it is
applicable only to pulverization of a foxtail millet having relatively
large particle size like the rice hull. It has a difficulty in pulverization
of a fibroid material and a sponge material which require minute
particle size.
In particular, crushed grains are progressed in one direction,
such that a turbulence doesn't occur but a laminar flow occurs,
thereby deteriorating collision effect of the crushed grains and
resulting in non-uniform particle size. A temperature of the crusher
is increased since the crushing process is repeatedly performed,
whereby physical properties of the crushed object are changed due
to the temperature increase.
Further, the crusher has another problem in economical effect.
Since the impeller and the discharging fan are connected to one
power shaft, if the crusher is operated for a long time, a severe
vibration is caused due to a bending of the power shaft, whereby
a cost for repairing and maintaining the crusher is greatly increased
due to damage on a bearing. In addition, the crusher has still another
problem. Since the discharging fan is formed on an external peripheral
surface of a pipe, fine powder generated during the crushing operation
is stuck to an internal peripheral surface of the pipe and the alien
substance stuck to the internal peripheral surface of the pipe drops
off during operation and gets to be included in a normally crushed
grain, thereby deteriorating quality.
The applicant disclosed a crusher(Korean Patent Application No.
59427 filed in 1999) wherein a first crushing is performed by forming
turbulence and making grains collide together, a second crushing
is performed by delaying a residence time of the first crushed grain
and shearing the first crushed grain at the same time, and a third
crushing is performed by stirring the second crushed grain at a
high speed and making the same colliding together. According to
the crusher, a heat radiation area of a casing is enlarged so that
heat generated inside can be effectively discharged.
As drawn in FIG. 2 the crusher has a crushed object inlet 211
at the center of an upper part of a top casing 21 an air inlet
212 on a side, a discharging mechanism 221 on a side of a lower
part of a casing 22 to discharge a completely crushed grain to the
outside, an impeller 23 being mounted on an upper part of a rotary
shaft S at the center of the ring gear casing 22 and a discharging
wing 231 on an inside corresponding to the discharging mechanism
221 the crusher comprises: a first crushing part 24 including a
central rotary wing 241 and a first rotary wing 242 which are integrally
formed with a first rotary plate 233 on an inside and an outside
of an upper end of a fixing member 232 rested on an upper part of
the impeller 23 and also including a first ring gear 243 which
is formed on an inside wall of the ring gear casing 22 corresponding
to the first rotary wing 242; a second crushing part 25 including
radially spaced-apart second rotary wings 251 between an edge portion
of a lower surface of the first rotary plate 233 and an edge portion
of an upper part of a second rotary plate 234 horizontally fixed
to a lower end of the fixing member 232 and including a second
ring gear 252 which is formed on an inside wall of a central part
of the ring gear casing 22 corresponding to a side of the second
rotary wings 251; a third crushing part 26 including radially spaced-apart
third rotary wings 261 which form double steps on an edge portion
of a lower surface of the second rotary plate 234 and including
a third ring gear 262 which is formed on an inside wall of a lower
part of the ring gear casing 22 corresponding to a side of the third
rotary wings 261; and a heat radiation groove 222 being formed on
a surface of the ring gear casing 22.
In the earlier application crusher, the first, second, and third
crushing parts are formed in a vertical gravity settling type, such
that as a residence time of the crushed material becomes shorter,
a crushing effect is deteriorated. The third crushing part is semicircular-shaped,
such that a crushing efficiency with respect to a crushed object
containing lots of fibroid material is deteriorated.
All revolving bodies are connected to one fixing member, such that
a high vibration is caused. A part of a bearing for supporting the
rotary shaft is positioned inside the crushing part, such that a
temperature within the crushing part is increased due to a friction.
Therefore, viscosity of grease injected into the bearing is deteriorated
in a short time, causing a burning of the bearing. A load is applied
respectively to a rotational direction and an axial direction during
the operation, thereby causing a greater load.
Furthermore, the discharging wings are radially connected around
the external peripheral surface of the pipe, such that the fine
crushed grain is stuck to the inside of the pipe and the alien substance
stuck to the internal peripheral surface of the pipe drops off during
the operation and gets to be included in the normally crushed grain,
thereby deteriorating quality. Moreover, in order to clean the inside
of the equipment, a plurality of multi-stepped cases should be disadvantageously
dismantled and all components inside should be taken to pieces.
BRIEF DESCRIPTION OF THE DRAWINGS
Further objects and advantages of the invention can be more fully
understood from the following detailed description taken in conjunction
with the accompanying drawings, in which:
FIG. 1a illustrates a sectional view of a conventional rice hull
crusher and FIG. 1b illustrates a side view of the conventional
rice hull crusher;
FIG. 2 is a sectional view of a crusher of an earlier application;
FIG. 3 is a front sectional view according to the present invention;
FIG. 4 is a side view according to the present invention;
FIGS. 5a to 5c are side sectional views of FIG. 3 according to
the present invention, especially FIG. 5a illustrating a sectional
view taken through a line A--A, FIG. 5b illustrating a sectional
view taken through a line B--B, and FIG. 5c illustrating a sectional
view taken through a line C--C; and
FIG. 6 is a side sectional view of a third ring gear according
to another preferred embodiment of the present invention.
BEST MODE FOR CARRYING OUT THE INVENTION
Reference will now be made in detail to the preferred embodiments
of the present invention, examples of which are illustrated in the
accompanying drawings. FIG. 3 is a front sectional view according
to the present invention, and FIG. 4 is a side view according to
the present invention.
A crusher according to the present invention comprises a case part
30 forming a cylindrical space to suck a material on an upper part
on one side and discharge the suck material to a lower part on other
side by horizontally moving the suck material; a power supplying
part 40 for supplying a driving force of a motor to a rotary shaft
43 installed at the center of the case part 30; a rotary blade part
50 being fixed to a central part of the rotary shaft 43 and rotated
in one direction to form a turbulence in multiple stages; a ring
gear part 60 for maintaining a gap from a circumference of the rotary
blade part 50 to form a crushing zone in multiple stages; and a
discharging fan 70 being fixed to other end part of the rotary shaft
43 and rotated in one direction to discharge a completely crushed
grain.
The case part 30 includes a first case 31 being connected to an
inlet 32 on a side of an upper part of a cylinder whose both sides
are perforated, allowing a flange to be formed on a circumference
of the both sides, and having a ventilation guide member 33 with
a guide hole 331 of a predetermined diameter on an internal peripheral
surface on other side to guide a material introduced to the inlet
32 to the center on other side; a second case 34 being perforated
on both sides, and allowing a flange to be formed on a circumference
of the both sides; and a third case 35 being connected to a discharging
mechanism 351 on a side of a lower part of a cylinder whose both
sides are perforated and allowing a flange to be formed on a circumference
on the both sides.
The first, second and third cases 31 34 and 35 make the respective
flanges coinciding with each other to be arranged in a straight
line. The flange of the first case 31 on one side and the flange
of the third case 35 on other side are closely contacted with covers
36 and 36' which are perforated at the center thereof, and then
a fixing shaft 37 passes from the cover 36 on one side to the cover
36' on the other side to be coupled with a nut 371 on other side.
The power supplying part 40 respectively fixes couplings 41 and
41' on an outside of the center of the covers 36 and 36', and the
rotary shaft 43 is installed to pass through the center of the couplings
41 and 41'. A pulley 42 is connected to a side end part of the rotary
shaft 43 to supply a power of a motor(not shown) to the rotary shaft.
The rotary blade part 50 is fixed to an outer wall of the rotary
shaft 43. For this, a rotary boss 51 allows circular disks 511 and
511' which are perforated at the center and have the same diameter
to face each other on both sides thereof. As illustrated in FIG.
5a, a plurality of rotary blades 52 having a slope at a predetermined
angle in a direction are formed on a circumference of an outside
surface of the circular disk 511 on the one side of the rotary boss
51 and a plurality of second rotary blades 53 having a slope at
a predetermined angle in the same direction as the first rotary
blades 52 are formed on a perimeter inwardly spaced from the first
rotary blades 52. A support plate 56 is attached and fixed to an
outside surface of the first rotary blades and the second rotary
blades 52 and 53.
As shown in FIG. 5b, a plurality of third rotary blades 54 are
radially formed at uniform intervals on a circumference of an outer
wall between the circular disks 511 and 511' of the rotary boss
51 and allow an uneven portion to be formed on an outside surface
thereof. As shown in FIG. 5c, a plurality of fourth rotary blades
55 are slantly formed at a predetermined angle on a circumference
of an outside surface of the circular disk 511' on other side of
the rotary boss 51. A blade edge on an external peripheral side
of the fourth rotary blades 55 is more outwardly protruded than
a diameter of the circumference of the circular disk 511' on the
other side of the rotary boss 51.
In the ring gear part 60 as shown in FIG. 5b, a first ring gear
61 is fixed to an internal peripheral wall on a side of the second
case 34 corresponding to an external peripheral surface of the first
rotary blade 52 of the rotary blade part 50. As shown in FIG. 5b,
a second ring gear 62 is fixed to an internal peripheral wall on
other side of the first ring gear 61 corresponding to an external
peripheral surface of the third rotary blade 54. The first ring
gear 61 and the second ring gear 62 are same in construction as
the ring gear of the earlier application.
As illustrated in FIG. 5c, a third ring gear 63 is fixed to an
internal peripheral wall on a side of the third case 35 corresponding
to an external peripheral surface of the fourth rotary blade 55.
In the third ring gear 63 circularly recessed friction grooves
632 are consecutively formed on an inside surface of an annular
body 631 having a width capable of accommodating a side surface
on an edge portion of the fourth rotary blade 55. Such a construction
of the third ring gear 63 is used when a solid material such as
a powder is crushed into a fine powder.
According to another preferred embodiment of the third ring gear
63 as shown in FIG. 6 the unevenly recessed friction grooves 633
with a sharp blade edge are consecutively formed on the inside surface
of the annular body 631 with a width capable of accommodating the
side surface of the edge portion of the fourth rotary blade 55.
This third ring gear 64 is selectively used to crush a fibroid material
into a fine powder.
Hereinafter will be explained operation of the crusher constructed
as above according to the present invention.
If a motor is operated and the rotary shaft 43 connected to the
pulley 42 is rotated in one direction, the rotary blade part 50
fixed to the central part of rotary shaft 43 is rotated. When a
suction force is accordingly generated inside the equipment, the
object to be crushed is introduced through the inlet 32 formed on
the upper part on one side of the first case 31 and the air is sucked
from the outside the same time. The object to be crushed and the
air introduced into the inside of the first case 31 through the
inlet 32 are rapidly forwarded to the central part on one side of
the second case 34 via the guide hole 331 of the ventilation guide
member 33 which is mounted on other side of the first case 31.
The object introduced into the second case 34 along with the air
is first crushed in the crushing zone between the first ring gear
61 and the first and second rotary blades 52 and 53 by receiving
an energy which is consecutively accelerated by the first and the
second rotary blades 52 and 53 of the rotary blade part 50. Then,
the object is crushed in the crushing zone between the second ring
gear 62 and the third rotary blade 54 by receiving an energy which
is accelerated by the third rotary blade 54. The object is further
crushed in the crushing zone between the third ring gear and the
fourth rotary blade 55 and then discharged to the outside through
the discharging mechanism 351 connected to the lower part on one
side of the third case 35 by a blast force of the discharging fan
70.
As a consequence, according to the crusher of the present invention,
the crushed object introduced along with the air in the crushing
process is spirally rotated in a horizontal direction to form a
strong air current, and uniformly crushed in the crushing zone defined
between the rotary blade part 50 in which the four rotary blades
52 53 54 and 55 are consecutively formed and the ring gear part
60 in which the three ring gears 61 62 and 63 are consecutively
formed.
In the horizontal-type structure, the load generated during the
operation is applied only in a rotational direction, whereby load
and noise of the driving force are reduced, the crushed grain is
prevented from being stuck to between components which are rotated
at a high speed, and respective components are easily and successively
dismantled for cleaning and replacing purposes.
The forgoing embodiments are merely exemplary and are not to be
construed as limiting the present invention. The present teachings
can be readily applied to other types of apparatuses. The description
of the present invention is intended to be illustrative, and not
to limit the scope of the claims. Many alternatives, modifications,
and variations will be apparent to those skilled in the art.
INDUSTRIAL APPLICABILITY
As stated above, according to a crusher of the present invention,
a material is sucked in an upper part on one side of a case part
which is formed by horizontally coupling a plurality of cases. The
sucked material is horizontally moved and discharged to a lower
part on other side. A driving force of a motor is transferred to
a side of a rotary shaft which passes through the center of the
case from one side to other side. The crusher includes: a rotary
blade part for maintaining an interval from an internal peripheral
surface of a central part of the case part, and being fixed to a
central part of the rotary shaft and rotated in one direction to
generate a turbulence in multiple stages; a ring gear part being
fixed to an internal peripheral surface of the center of the case
part for maintaining a gap from a circumference of the rotary blade
part to form a crushing zone in multiple stages; and a discharging
fan being fixed to other end part of the rotary shaft and rotated
in one direction to discharge a completely crushed grain. The crusher
according to the present invention can minimize a crushing deviation
and effectively crush a high fibroid material and a high molecular
substance by enabling the material introduced along with the air
from the outside to be spirally rotated in the horizontal direction
so as to form a strong air current, achieve easy repair and maintenance
and extend the life of the equipment by enabling a load generated
during an operation to be applied only in the rotational direction
so as to minimize load and noise of a driving force, and improve
quality of a grain and ensure an easy cleaning and replacing by
preventing a crushed grain from being stuck to rotating components.
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