Title: Impact-type rotary fining, homogenizing and emulsifying device
Abstract: An impact-type rotary fining, homogenizing and emulsifying device is constituted by a casing body disposed on a base, a feed port and a discharge port disposed in the casing body, and a power shaft disposed inside of the casing body. The power shaft is equipped with rotary impellers in such a manner that the rotary impellers are disposed on the power shaft and include a first rotary impeller rotated in a positive direction and a second rotary impeller rotated in negative direction. A power shaft portion is located in the feed port and is equipped with a feed impeller. A valuable advantage is obtained in that its new and distinct structure and innovative design enable the device to heighten the impact velocity applied to treated materials many fold, without raising the rotating speed of the impellers. Functions of fining, homogenizing and emulsifying are improved, while effectively enhancing the overall performance of the apparatus, within the motor's allowable rotational speed.
Patent Number: 6,997,598 Issued on 02/14/2006 to Ding
| Inventors:
|
Ding; Nan (Yao Gang Lu Fu 31 Hao 3-208, Nan Tong City, Jang Su 226006, CN)
|
| Appl. No.:
|
422775 |
| Filed:
|
April 25, 2003 |
Foreign Application Priority Data
| Apr 26, 2002[CN] | 02112974 A |
| Current U.S. Class: |
366/164.6; 366/264; 366/296; 366/317 |
| Current Intern'l Class: |
B01F 5/12 (20060101) |
| Field of Search: |
366/131,164.6,295,296,317,264
241/185.6,186.5,188.1,188.2,189.1,243
|
References Cited [Referenced By]
U.S. Patent Documents
| 6902 | Nov., 1849 | Learned et al.
| |
| 53912 | Apr., 1866 | Whitcomb.
| |
| 90758 | Jun., 1869 | Leach.
| |
| 614522 | Nov., 1898 | Whiting et al.
| |
| 894753 | Jul., 1908 | Smith.
| |
| 1947953 | Feb., 1934 | Otto.
| |
| 1970330 | Aug., 1934 | Mason.
| |
| 2075506 | Mar., 1937 | Crites et al.
| |
| 2113040 | Apr., 1938 | Anderson.
| |
| 2502022 | Mar., 1950 | Paul.
| |
| 2619330 | Nov., 1952 | Willems.
| |
| 4883363 | Nov., 1989 | Pillon et al.
| |
Primary Examiner: Sorkin; David
Attorney, Agent or Firm: Guss; Paul A.
Claims
What is claimed is:
1. An impact-type rotary fining, homogenizing and emulsifying device comprising:
a casing body positioned on a base;
a feed port positioned in said casing body;
a discharge port positioned in said casing body;
a power shaft disposed inside said casing body and equipped with rotary impellers,
wherein said rotary impellers are disposed on said power shaft and include a
first rotary impeller rotated in a positive direction and a second rotary impeller
rotated in a negative direction, and
wherein a terminal end portion of said power shaft is suspended in a cantilever
fashion substantially centrally in said feed port such that materials can be fed
into said feed port from a position in front of said terminal end portion of said
power shaft, said terminal end portion of said power shaft being equipped with
a feed impeller.
2. The impact-type rotary fining, homogenizing and emulsifying device according
to claim 1, wherein said power shaft comprises a hollow power shaft member and
a solid power shaft member disposed inside said hollow power shaft member, and
wherein said first rotary impeller rotated in the positive direction and said second
rotary impeller rotated in the negative direction are mounted respectively on said
hollow power shaft member and said solid power shaft member.
3. The impact-type rotary fining, homogenizing and emulsifying device according
to claim 2, wherein said feed impeller comprises a centrifugal pump impeller.
4. The impact-type rotary fining, homogenizing and emulsifying device according
to claim 2, wherein said first rotary impeller rotated in the positive direction
comprises a plurality of first rotary impellers, and said second rotary impeller
rotated in the negative direction comprises a plurality of second rotary impellers.
5. The impact-type rotary fining, homogenizing and emulsifying device according
to claim 4, wherein said plurality of first rotary impellers rotated in the positive
direction and said plurality of second rotary impellers rotated in the negative
direction are positioned in a staggered relationship with respect to each other
in a radial direction on a common axis.
6. The impact-type rotary fining, homogenizing and emulsifying device according
to claim 4, wherein said first rotary impeller and said second rotary impeller
are each constructed of a multi-blade impeller structure.
7. The impact-type rotary fining, homogenizing and emulsifying device according
to claim 4, wherein said first rotary impeller and said second rotary impeller
are each constructed of a plurality of separate blade elements which are joined
together to provide a multi-blade impeller structure.
8. The impact-type rotary fining, homogenizing and emulsifying device according
to claim 1, wherein said first rotary impeller rotated in the positive direction
comprises a plurality of first rotary impellers, and said second rotary impeller
rotated in the negative direction comprises a plurality of second rotary impellers.
9. The impact-type rotary fining, homogenizing and emulsifying device according
to claim 8, wherein said plurality of first rotary impellers rotated in the positive
direction and said plurality of second rotary impellers rotated in the negative
direction are positioned in a staggered relationship with respect to each other
in a radial direction on a common axis.
10. The impact-type rotary fining, homogenizing and emulsifying device according
to claim 8, wherein said first rotary impeller and said second rotary impeller
are each constructed of a multi-blade impeller structure.
11. The impact-type rotary fining, homogenizing and emulsifying device according
to claim 8, wherein said first rotary impeller and said second rotary impeller
are each constructed of a plurality of separate blade elements which are joined
together to provide a multi-blade impeller structure.
12. The impact-type rotary fining, homogenizing and emulsifying device according
to claim 1, wherein said feed impeller comprises a centrifugal pump impeller.
13. The impact-type rotary fining, homogenizing and emulsifying device according
to claim 1, wherein a central axis of said feed port is substantially parallel
to an axis of said power shaft.
14. The impact-type rotary fining, homogenizing and emulsifying device according
to claim 13, wherein said central axis of said feed port is coaxial with said axis
of said power shaft.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to physical methods and techniques of mixing, fining,
homogenizing and emulsifying using a device, and to a machine for mixing, fining,
homogenizing and emulsifying. More specifically, the invention is directed to an
impact-type rotary fining, homogenizing and emulsifying device.
2. Description of the Related Art
Impact-type rotary fining, homogenizing and emulsifying machines are
known, which are made up of fining, homogenizing and emulsifying parts and machinery,
and have been widely used industrially over a long period of time. All current
machines have at least one fixed disk and rotational impellers, which are staggered
with respect to each other in the radial direction on a common axis. In order to
improve the performance of such machines in conducting fining, homogenizing and
emulsifying, in addition to increasing the rotating speed or diameters of the impellers,
a lot of research has been expended investigating the shapes of the impellers and
the blades used thereon. For example, among such efforts, attempts have been made
to reduce the gap between the fixed disk and the rotational impellers, decrease
the width of the notches formed between blades, to increase the number of disks
and/or impellers used, or to increase the number of blades used on the impellers.
Although increasing the rotating speed of the impellers to quicken impact applied
to treated materials by the impellers is one effective means of achieving a desired
result, raising the rotating speed of the impellers is limited by the motor's allowable
rotating speed. Motors with higher rotational speeds disadvantageously add to the
total weight and bulkiness of the device.
SUMMARY OF THE INVENTION
An object of the present invention is to provide an impact-type rotary fining,
homogenizing and emulsifying device which can raise and increase many fold the
impact velocity applied to treated materials, without requiring any increase in
the rotating speed of the impellers.
To solve and attain the above object, the present invention is constituted by
an impact-type rotary fining, homogenizing and emulsifying device, comprising a
casing body positioned on a base, a feed port and a discharge port positioned in
the casing body, and a power shaft disposed inside the casing body equipped with
rotary impellers. The rotary impellers attached to the power shaft include a first
rotary impeller rotated in a positive direction and a second rotary impeller rotated
in a negative direction. A power shaft portion is located in the feed port and
is equipped with a feed impeller.
According to the present invention, the power shaft equipped with impellers
rotated in positive and negative directions is composed of a hollow power shaft
member and a solid power shaft member located inside the hollow power shaft member.
The first rotary impeller rotated in the positive direction and the second rotary
impeller rotated in the negative direction are installed on or attached respectively
to the hollow power shaft member and the solid power shaft member. The number of
impellers used for each of the first and second rotary impellers is one at least,
and the impellers having different rotary directions are staggered radially with
respect to each other on the same axis.
In case there are at least two for each of the rotary impellers, the first rotary
impeller rotated in the positive direction and the second rotary impeller rotated
in the negative direction may be made of an integrated structure, or from a plurality
of individual blade elements which are joined together, to provide a multi-blade
impeller structure. As discussed above, a centrifugal pump impeller may be used
as the feed impeller.
The valuable effect of this invention is that a novel and distinct structure,
based on a clever design, is provided to heighten the impact velocity applied to
treated materials many fold, without requiring any increase in the rotating speed
of the impellers, to thereby improve the functions of fining, homogenizing and
emulsifying. Thus, restraints on the device's overall performance, resulting from
limits on the allowable rotational speed of the motor, can be overcome.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a structural drawing of an impact-type rotary fining, homogenizing
and emulsifying device according to the present invention.
FIG. 2 is a sectional view taken along the line C—C in FIG. 1;
FIG. 3 is a diagram for explaining the fundamental operation and effect of the
present invention;
FIG. 4 is an enlarged view of structural details of the impellers which are
rotated in positive and negative directions according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
As shown in FIG. 1, the present invention includes a base or pedestal
1
which supports a bearing box
2, a seal casing
3, a sealing plate
4, a body
5 for encasing the emulsifying machine, a bolt
6,
and a casing body
7 attached to the front of the fining, homogenizing and
emulsifying device.
The internal components of the device include a centrifugal pump impeller
8,
a first rotary impeller
9 rotated in a positive direction, a second rotary
impeller
10 rotated in a negative direction, a key
11, a base plate
12 for supporting the first rotary impeller
9 rotated in the negative
direction, a machine seal or seal packing
13, a bearing
14 and bearing
platen
15, and an oil seal
16. The power shaft mechanism comprises
a hollow power shaft member
17, and a solid power shaft member
18
disposed inside the hollow power shaft member
17. Pulleys or gears
19
and
22 are attached respectively to the power shaft members
17 and
18 at the back of the apparatus, along with a nut
20.
The impact-type rotary fining, homogenizing and emulsifying device of the present
invention is basically constructed as described above. The specific manner of operation
of the device shall now be described.
FIGS. 1 and 2 illustrate an exemplary embodiment of the present invention.
The first rotary impeller
9 which is rotated in a positive direction and
the second rotary impeller
10 which is rotated in a negative direction may
each be constructed as an integrated structure. A casing body is positioned on
the base
1, and a feed port
30 and a discharge port
32 are
disposed in the casing body. A power shaft composed of a hollow power shaft member
17 and a solid power shaft member
18 is rotatably disposed inside
the casing body and is equipped with the rotary impellers
9 and
10.
Such rotary impellers are different from those used in the conventional technique
in that the rotary impellers located on the power shaft include a first rotary
impeller
9 rotated in the positive direction and a second rotary impeller
10 rotated in the negative direction. More specifically, the first rotary
impeller
9 is constructed from a plurality of impeller blade members
9-
1,
9-
2,
9-
3, etc., as shown in detail in FIGS. 2 through
4. Similarly, the second rotary impeller
10 is constructed from a plurality
of impeller blades members
10-
1,
10-
2, etc., shown
in detail in FIGS. 2 through 4.
A power shaft portion
18 is located in the feed port
32 and is
equipped
with a feed impeller
8. Further, the power shaft, which is equipped with
the first rotary impeller
9 rotated in the positive direction and the second
rotary impeller
10 rotated in the negative direction, is composed of a hollow
power shaft member
17 and a solid power shaft member
18 positioned
inside the hollow power shaft member
17.
The first rotary impeller
9 rotated in the positive direction and the
second rotary impeller
10 rotated in the negative direction are respectively
installed on or attached to the hollow power shaft member
17 and the solid
power shaft member
18. The number for each of the impellers is at least
one, wherein the impellers
9 and
10 have different or opposite rotary
directions and are staggered with respect to each other in the radial direction
on a common axis.
In the case that there are at least two (i.e., more than one) for each of the
rotary impellers, the first rotary impeller
9 rotated in the positive direction
and the second rotary impeller
10 rotated in the negative direction are
each made up of impeller blade members having an integrated or split structure.
A centrifugal pump impeller is used as the feed impeller
8.
FIG. 4 shows in detail the split structure used for each of the first rotary
impeller
9 rotated in the positive direction and the second rotary impeller
10 rotated in the negative direction. More specifically, as shown in the
figure, the first rotary impeller
9 is composed of respective impeller blade
members
9-
1,
9-
2 and
9-
3 which are separately
formed but joined together to provide a plurality of impeller blades. Similarly,
the second rotary impeller
10 is composed of respective impeller blade members
10-
1 and
10-
2, which are separately formed but joined
together to provide a plurality of impeller blades. As noted previously, it is
also possible for the first and second rotary impellers
9 and
10
to be formed as an integrated structure, rather than from a plurality of separately
joined impeller blade members.
In summary, the fundamental operating principals of the present invention are
as follows, as illustrated in the explanatory drawing shown by FIG. 3.
After obtaining a high centrifugal force owing to the action of the blades
9-
1 of the first rotary impeller
9 rotated in a positive (or
negative) direction, the liquid, semi-solid or solid material impacts, at high
speed in the direction shown by the arrow in FIG. 3, onto the blades
10-
1
of the second rotary impeller
10 which is rotated in a negative (or positive)
direction. Thereby, the material to be treated is mixed and emulsified through
pulverizing and fining, and then continues to impact on the next-stage blades
9-
2
and
10-
2, etc., under the action from the blades of the rotary impellers
9 and
10 rotated in opposite (negative and positive) directions.
The process continues to go round, i.e. is repeated and begins again, in this way
until the treated material reaches the discharge port
32. In other words,
because the material to be treated is thrust in a first direction by action of
the impeller blades
9-
1 and
9-
2, the impact force of
the material is increased by coming into contact with impeller blades
10-
1
and
10-
2 which are rotated in a direction opposite to the blades
9-
1 and
9-
2.
Thus, the impact force applied to the material to be treated can be increased
without requiring use of a motor having a higher rotational speed; that is, within
the limit of the operating rotational speed of the motor used, the impact force
applied to the material to be mixed and emulsified through pulverizing and fining
can be increased.
*
