Information
-
Patent Grant
-
6701979
-
Patent Number
6,701,979
-
Date Filed
Wednesday, October 30, 200221 years ago
-
Date Issued
Tuesday, March 9, 200420 years ago
-
Inventors
-
Original Assignees
-
Examiners
- Huson; Gregory
- deVore; Peter
Agents
- Sapone; William J.
- Coleman Sudol Sapone, P.C.
-
CPC
-
US Classifications
Field of Search
-
International Classifications
-
Abstract
In a machine (1) for filling containers with a liquid substance, a rotating head (2) is carried rotatingly by a stationary structure (3) and a liquid substance delivering chamber (4) is made inside the rotating head (2). A plurality of distributors (6) are arranged along the edge of the rotating head (2) for delivering the liquid substance to filling nozzles (7) associated with the rotating head (2). A basin (30) is associated to the stationary structure (3) for collecting a sterilizing liquid introduced into the distributors (6) and flowing in the nozzles (7) for sterilizing, by washing, the distributors (6) and the nozzles (7). The basin (30) is closed by a cover (32), fastened to the rotating head (2).A plurality of vertical tubes (34) pass tightly through the cover (32) and extend inside the basin (30), so as to be connected to the nozzles (7) and to the distributors (6) by flexible pipes (25A, 25B).
Description
BACKGROUND OF THE INVENTION
The present invention relates to filling containers, in particular bottles and the like, with liquid substances.
DESCRIPTION OF THE PRIOR ART
In the pharmaceutical or cosmetic industry there are known filling machines which automatically fill bottles with measured quantities of liquid substances.
The above mentioned machines are usually equipped with a rotating head, which is carried by a stationary structure. The head rotates on a vertical axis. A liquid delivering chamber, fed by a suitable duct, is formed inside the head.
The rotating head features, arranged along the edge thereof, syringe-like distributors, which deliver the liquid substance to corresponding filling nozzles, associated with the rotating head by suitable three-way valves controlling the liquid substance passage.
The distributors are aimed, in two different moments, at batching liquid and at feeding the batched liquid to the nozzles.
The machines for filling bottles must be periodically sterilized by washing the areas, which are in contact with liquid substances, in particular after a working cycle is finished and when the liquid substance for filling the bottles is to be changed.
The machine is sterilized by feeding a suitable sterilizing liquid or steam to the distributors and to the nozzles, via the above areas being in contact with liquid substances, i.e. the distributing chamber of the rotating head.
The problem related to the sterilization operation concerns the collection and disposal of the sterilizing liquid.
Currently, in order to sterilize, it is necessary to stop the machine and to join thereto a basin, which conveys the sterilizing liquid going out of the areas being sterilized.
The open-topped collection basin usually includes two semi-circular portions which are fastened removably to the machine.
When the sterilization is completed, the collection basin is emptied and removed from the machine.
Besides obvious hygienic problems and environmental pollution risk, the above solution is very expensive, mainly because of operator labor.
Actually, the assembling and disassembling of the basin collecting the sterilizing liquid requires a lot of time, during which the machine does not work.
SUMMARY OF THE INVENTION
The object of the present invention is to solve the above problem by proposing a machine for filling bottles and the like, which allows to perform sterilizing operations in a simple and rapid way.
Another object of the present invention is to propose a machine the sterilization of which can be performed in an extremely efficient way, in absolutely hygienic conditions and without causing environment pollution.
A further object of the present invention is to propose a machine, in which sterilization operations require a reduced use of operators labor.
A still further object of the present invention is to propose a machine the construction of which is very simple and which is functional and versatile.
The above mentioned objects are obtained in accordance with the contents of the claims, by a machine for filling containers with a liquid substance, the machine including:
a rotating head carried rotatingly by a stationary structure;
a liquid substance delivering chamber made inside said a rotating head;
at least one distributor arranged along the edge of said rotating head for delivering the liquid substance;
at least one filling nozzle associated with said rotating head and connected with said distributor;
the machine being characterized in that it includes:
container means associated to said stationary structure for collecting a sterilizing liquid introduced into said distributor and flowing in the corresponding filling nozzle;
covering means applicable to said container means for closing tightly said container means;
conveying means for conveying said sterilizing liquid substance, said conveying means being connected to said covering means and associated to said nozzle and to said distributor for connecting tightly said nozzle and said distributor with said container means.
DESCRIPTION OF THE DRAWINGS
The characteristic features of the present invention will be pointed out in the following description of a preferred, but not only embodiment, with reference to the enclosed drawings, in which:
FIG. 1
shows a schematic vertical section view of a preferred embodiment of the proposed machine for filling bottles and the like with liquid substances;
FIGS. 2
a,
2
b
and
2
c
show vertical section views of a distributing device of the filling machine, in different operation steps;
FIG. 3
shows a vertical section view of a nozzle of the filling machine;
FIG. 4
shows a connection of the distributing device of FIG.
3
and the nozzle to a basin, associated to the machine for collecting the sterilizing liquid;
FIGS. 5
a
and
5
b
show vertical section views of the above sterilizing liquid collecting basin, in an opening and closing position, respectively.
BEST MODE OF CARRYING OUT THE INVENTION
With reference to the above figures, reference numeral
1
indicates the machine for filling bottles with a liquid substance.
The machine
1
includes a head
2
rotating on a vertical axis, The head
2
is carried by a stationary structure
3
forming the machine base.
Inside the rotating head
2
there is formed a liquid substance delivering chamber
4
. A duct
5
feeds the chamber
4
with the liquid substance.
Along its edge, the rotating head
2
features a plurality of syringe-like distributors
6
which deliver the liquid substance to corresponding filling nozzles
7
(
FIG. 3
) mounted to the rotating head, via suitable three-way valves
17
for controlling the liquid substance flow.
The syringe-like distributors
6
include a cylindrical sleeve
8
, in which a piston
9
slides.
The upper part of the sleeve
8
features a hole
10
, through which the liquid substance is delivered (
FIG. 2
a
).
The lower part of the cylindrical sleeve
8
features a ring-like area
18
with widened diameter, in correspondence of which there is made at least one discharge hole
11
.
The discharge hole
11
communicates with a duct
12
formed in a cap
13
covering the base of the cylindrical sleeve
8
.
The stem
19
of the piston
9
passes axially and tightly through the cap
13
.
Under the cylindrical sleeve
8
, the cap
13
defines a chamber
14
. The bottom of the chamber
14
communicates with the duct
12
through a discharge hole
16
.
A connecting element
160
is fastened to the end of the duct
12
(
FIGS. 2
a,
2
b
and
2
c
).
The top of each nozzle
7
communicates with a corresponding valve means
17
(see FIG.
1
.
The nozzle
7
is introduced into a collar
21
, in coaxial relation therewith.
The lower part of the collar
21
is closed and the upper part thereof is fastened tightly to the rotating head.
The collar
21
is introduced into an outer tubular sheath
22
, fastened tightly to the collar
21
and equipped, in its lower part, with a joint
26
.
The upper part of the collar
21
features a series of holes
23
, and the lower part of the collar
21
features a hole
24
of small diameter, which allows to drain possible accumulated condensed liquid (FIG.
3
).
The holes
23
connect a first cylindrical space I
1
, defined between the outer cylindrical edge surface SP of the nozzle
7
and the collar
21
, with a second cylindrical space I
2
between the collar
21
and the tubular sheath
22
.
Substantially, the collar
21
(and the relative lower hole
24
and the upper hole
23
) together with the tubular sheath
22
(with the relative joint
26
) form a device
50
, which allows to sterilize the nozzle
7
by washing, during the stops for maintenance operation of the machine
1
.
In particular, the inner channel as well as the outer cylindrical edge surface of the nozzle
7
are washed with a suitable sterilizing liquid introduced into the distributor
6
and going out from the nozzle
7
and flowing along the above first cylindrical space I
1
and second cylindrical space I
2
, as will be explained later on.
A substantially ring-like basin
30
for collecting the sterilizing liquid, is associated to the stationary structure
3
and connected to a discharge channel
31
(see
FIGS. 5
a,
5
b
).
The basin
30
can be closed by closing means
100
including a cover
32
, fastened to the rotating head
2
and equipped with a sealing plate
33
.
A plurality of vertical tubes
34
pass tightly through the cover
32
and extend inside the basin
30
, in correspondence to the above mentioned distributors
6
and sterilizing devices
50
, to which they are connected by flexible pipes
25
A,
25
B (FIG.
4
).
At their tops, the vertical tubes
34
feature respective joints
36
, which are to be connected to the above flexible pipes
25
A,
25
B and are closed during the production cycle by relative plugs
35
.
The basin
30
is operated, by suitable operating means, not shown, to move vertically (arrow X in
FIG. 5
b
) between a lowered opening position A (
FIG. 5
a
) and a raised closing position C (
FIG. 5
b
), in which it goes in abutment against the seal
33
.
During normal operation conditions, the basin
30
is situated in the lowered position A, so as to avoid rubbing of the seal
33
, rotated together with the rotating head
2
, on the basin
30
.
When the sterilization is to be performed by washing of the machine
1
, during normal machine
1
maintenance operations, the basin
30
is moved to the raised closing position C, in which it goes in abutment against the seal
33
.
Moreover, it is necessary to join each nozzle
7
with the relative sterilization device
50
, in a way as described above.
Finally, the vertical tubes
34
are connected to the distributors
6
and sterilization devices
50
by the flexible pipes
25
A,
25
B (FIG.
4
), which feature joints, which are complementary to the joints
160
,
26
,
36
of the distributors
6
, of the sterilization devices
50
and of the covering means
100
.
In this configuration, the sterilization is performed by feeding a suitable sterilizing liquid to the areas in contact with liquid substances, i.e. the delivering chamber
4
of the rotating head
2
, the distributors
6
and the nozzles
7
.
The sterilizing liquid is sucked into the distributors
6
by the motion of the piston
9
, which moves, starting from the top dead center (
FIG. 2
a
).
The piston
9
is imposed a stroke, whose amplitude is bigger than the maximum amplitude of the stroke in normal operation condition, indicated with broken line
9
a
in
FIG. 2
b,
so as to uncover the ring-like area
18
, having widened diameter, of the cylindrical sleeve
8
, which thus gets in contact with the sterilizing liquid.
During the subsequent upwards stroke of the piston
9
, the sterilizing liquid is pumped through the hole
10
and the sterilizing liquid which filled the area
18
, goes down along the cylindrical sleeve
8
up to the chamber
14
of the cap
13
.
Thus, the whole cylindrical sleeve
8
is in contact with the sterilizing liquid.
The sterilizing liquid, pumped by the distributors
6
, flows into the nozzles
7
, from which it goes out, so as to go upwards through the first cylindrical space I
1
and, to go down again by the upper holes
23
and through the second cylindrical space I
2
, so as to be conveyed to the basin
30
by the relative pipe
25
B, according to a continuous feeding flow of the sterilizing liquid.
Finally, the sterilizing liquid collected in the basin
30
is discharged through the discharge channel
31
.
Therefore, the proposed machine allows a simple and rapid sterilization operation by washing.
Actually, in order to perform the sterilization step, it is sufficient, when the machine
1
is stopped, to connect each nozzle
7
with the relative sterilizing device
50
, to close the collecting basin
30
, fastened to the structure of the machine and to connect, by the flexible pipes
25
A,
25
B, the distributors
6
and the tubular elements with the joints
36
of the basin cover
32
.
This causes a reduced external time and minimal use of manpower, which results in costs reduction and productivity increase.
The sterilization performed by the proposed machine takes place in absolutely hygienic conditions and without causing environment pollution.
It is understood that what above, has been described as a pure, not limitative example, therefore, possible variants of the invention remain within the protective scope of the present technical solution, as described above and claimed hereinafter.
Claims
- 1. A machine (1) for filling containers with a liquid substance, the machine including:a rotating head (2) carried rotatingly by a stationary structure (3); a liquid substance delivering chamber (4) made inside said a rotating head (2); at least one distributor (6) arranged along the edge of said rotating head (2) for delivering the liquid substance; at least one filling nozzle (7) associated with said rotating head (2) and connected with said distributor (6); the machine being characterized in that it includes: container means (30) associated to said stationary structure (3) for collecting a sterilizing liquid introduced into said distributor (6) and flowing in the corresponding filling nozzle (7); covering means (100) applicable to said container means (30) for closing tightly said container means (30); conveying means (34,25A,25B) for conveying said sterilizing liquid substance, said conveying means being connected to said covering means (100) and associated to said nozzle (7) and to said distributor (6) for connecting tightly said nozzle (7) and said distributor (6) with said container means (30).
- 2. A machine, according to claim 1, wherein said container means (30) include:a basin (30) collecting said sterilizing liquid substance and said covering means (100) include a cover (32) fastened to said rotating head (2); operating means for moving said basin (30) between a lowered opening position (A) and a raised closing position (C), in which it goes in abutment against said cover (32); a seal (33) interposed between said basin and said cover.
- 3. A machine, according to claim 2, wherein said cover (32) is equipped with a seal (33), substantially a plate-like seal engaging edges of said basin (30).
- 4. A machine, according to claim 1, wherein said distributor (6) includes:a cylindrical sleeve (8); a piston (9) sliding inside said sleeve (8); a ring-like area (18) defined in a lower part of said cylindrical sleeve (8); at least one discharge hole (11) made in said ring-like area (18); a duct (12) connected with said discharge hole (11) and connected to said container means (30) by said conveying means (25A).
- 5. A machine, according to claim 4, wherein said duct (12) is defined by a cap (13), which incorporates the base of said cylindrical sleeve (8), with a stem (19) of said piston (9) passing axially and tightly through said cap (13), said cap (13) defining, under said cylindrical sleeve (8), a chamber (14), set in communication with said duct (12) through a discharge hole (16).
- 6. A machine, according to claim 1, further including a device (50) for washing each of said filling nozzles (7), said device (50) including:a collar (21) with a lower part closed and with an upper part fastened tightly to said rotating head (2), said collar (21) being coupled with the nozzle (7); a first space (I1) defined between the outer cylindrical edge surface (SP) and said collar (21), with a lower part of said first space (I1) communicating with said nozzle (7); a tubular sheath (22) with an upper part fastened tightly to said rotating head (2), said tubular sheath (22) containing said collar (21), said tubular sheath (22) together with said collar (21) defining a second space (I2) set in communication with said first space (I1) by at least one through hole (23) made in the upper part of said collar (21); said tubular sheath (22) forming in its lower part a joint (26) for connecting with said conveying means.
- 7. A machine, according to claim 6, wherein a hole (24) of small diameter, is made in the lower head of said collar (21), so as to allow to drain possible accumulated condensed liquid.
Priority Claims (1)
Number |
Date |
Country |
Kind |
B02000A0255 |
May 2000 |
IT |
|
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
PCT/IB01/00711 |
|
WO |
00 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO01/85594 |
11/15/2001 |
WO |
A |
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4667709 |
Fischer et al. |
May 1987 |
A |
4967813 |
Ponvianne et al. |
Nov 1990 |
A |
Foreign Referenced Citations (2)
Number |
Date |
Country |
0 486 438 |
May 1992 |
EP |
2 067 499 |
Aug 1971 |
FR |