JPS58112994A - Method and device for filling liquid - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in liquid filling methods and devices.

To explain the conventional liquid filling device with reference to Figs. 1 and 2, (α
) is the liquid tank, (h) is its filling tank, (C) is the exhaust chamber, (d) is the counter passage, (, 1 is the communication pipe, (R is the pulp block, (Al(j) is the valve, X&1) is the air cylinder, 0□)(k2) is the same air cylinder,
, )'s e-Stonrotsubi, (11iE exhaust valve, -) is the float, false) is the exhaust passage, (O) car! nt tube, (
p) is the filling tube, (r) is the liquid tube, (I) is the plunger, (
t) is the snift passage, (9) is the container, and when the container (q) is pressed against the pulp block (ylK), the valve (A) opens from the air cylinder C) 1) K, and the counter passage (d),
Carbon dioxide gas is introduced into the container (q) through the filling pipe (P). In this way, the internal pressure of the filling tank (h) and the container (
When the internal pressure of q) becomes the same as the internal pressure of air cylinder/(19
A) The valve is closed by K. In addition, liquid tank (α)
is composed of a filling tank (bl) and an exhaust chamber (C). Next, the valve (i) and the exhaust valve (1) are opened from the cylinder Ck1)K, and the liquid is filled. Also valve (
When the barrel) is opened, the pulp block (y) K*(A) is led from the filling tank (h) via the liquid pipe (r). The same liquid) flows into the container (q) from the filling pipe (P), and the gas in the container (q) flows into the vent tube (,).
Exhaust passage (n) float (→exhaust valve <1> communication pipe (-)
to the exhaust chamber (c).

Note that the pressure in the exhaust chamber (C) is lower than the pressure in the filling tank (b).
held at a certain pressure. When the liquid level of the liquid (A) that has flowed into the container (q) from the filling tube (F)l reaches the lower end of the India tube (O), the K liquid flows into the exhaust passage (fL) and the float ←) is pushed up and the exhaust passage (
F&) will be closed. As a result, the inflow of liquid (A) from the filling tank <b) is stopped, and filling is completed. Valve (i) and exhaust valve (1) are then closed by cylinder (kl). Next, a snift valve (not shown) is operated to open the snift passage (4), and after the pressure in the upper part of the container (9) is released to the atmosphere δ, the container (q) is lowered. During this descent, the upper part of the filling tube (7, 1) is communicated with the atmosphere by a means not shown, and the remaining liquid in the filling tube (Pl) falls into the container (q) in FIG. ) is removed from the filling device, the valve (A) opens and the filling tube (pi
When the residual liquid (adhesive liquid) in the tank is discharged outside the machine by carbon dioxide gas in the filling tank fhl, the trap and plunger (I)
is operated, and the remaining liquid in the exhaust tube (51 exhaust passage (rL) float) is discharged from the exhaust tube (6) to the outside of the machine due to the pressure inside the exhaust chamber (C). After cleaning the remaining liquid, the next container (9) to be filled is again pressed against the pulp block (!I) and the same process is repeated. Note that after the container is removed from the filling device as described above, the remaining liquid in the filling tube, ind tube (1), and exhaust passage (ship 70-toe) is discharged to the outside of the machine from the next container ( When ql is pressed against the pulp block (,!711tC) and the filling process is started again, the remaining liquid in the above area and the adhering liquid in the filling tube (P) are pumped into the container (q) by the counter gas. This is because the liquid may be scattered and cause foaming of the liquid during filling, the exhaust passage (1%) may be blocked and filling may become impossible, and residual liquid remaining in the above areas may cause the generation of bacteria, which is undesirable. be.

In the liquid filling device, the remaining liquid is discharged outside the machine before the next filling process, so it is not possible to prevent bacteria from forming inside the room, which is a factor that worsens the working environment. Ta.

The present invention addresses the above-mentioned problems, and includes a liquid filling method in which a long filling pipe is inserted close to the bottom of the container to fill the liquid from the liquid tank into the container. The residual liquid between the liquid tank and the filling pipe is allowed to fall into the container, and during this process, the counter gas is trapped in a part of the exhaust passage that communicates the upper part of the filling tank and the container filled with liquid, and is exhausted during sniffing. A liquid filling method characterized in that the residual liquid rising in the passage is pushed back into the container by expansion of the counter gas as the pressure in the upper space inside the container is reduced at that time, and a long filling pipe is inserted close to the bottom of the container. In a liquid filling device that fills liquid from a liquid tank into a container,
a counter passage extending from the liquid tank into the container, an atmosphere side passage whose one end is connected to the atmosphere Ili, an exhaust passage for counter gas in the container that is connected to the counter passage and the atmosphere side passage via a valve, and the atmosphere side A snift passage extending from a valve provided at the other end of the passage to the upper space inside the container, and a filling pipe side passage extending from the valve provided at the other end of the atmosphere side passage to the upper part of the filling pipe. Regarding the liquid filling device,
The purpose of this is to ensure reliable liquid filling without foaming or melting, and to prevent deterioration of the working environment.
Another object of the present invention is to provide an improved liquid filling method and apparatus that prevent liquid loss.

Next, the liquid filling device of the present invention will be explained with reference to an embodiment shown in Fig. 4. In Fig. 3, (1) is a container filled with liquid, (2) is a filling tank, and (3) is a liquid filling device. Filling pipe, (5) is pulp block (4) K filling tank (2) and filling pipe (3)
(7) is a panel provided between the nozzle block (4) and the liquid valve (5), and (8) is the filling valve. A counter passage (10) is provided so as to communicate the upper space of the tank (2) with the inside of the container (1) whose mouth is sealed by the sealing member (9) provided with the nomilp block (4). Same counter aisle (8)
It is a counter valve that opens and closes the
A) (10C), (10α) (10b) is connected to the counter passage (8), and (10c) is the exhaust passage (described later).
11). Also, (11) is the counter valve (1
The opening of the container (1) is sealed by the sealing member (9) provided on the connection port (10C) of
) is an exhaust passage provided to communicate with the inside. Comparing the lower end of the navigating tank passage (8) and the lower end of the exhaust passage (11), the latter is located lower.

Further, (12) is a float valve provided with the exhaust passage (11)K, which includes a ball (12α), a stopper (12h), and a sealing surface (12C). Further, (13) is a passage that communicates between the counter valve (10) and the float valve (12) of the exhaust passage (11) and the atmosphere release tank (14) which is released to the atmosphere. ) and a small orifice (16). (17) is the passage (2
o) and the atmosphere release tank (14) side of the passage (13), and is provided with a large orifice (18) having a smaller restricting resistance than the small orifice (16). (
19) is a passage opening into the container (1) whose mouth is sealed by the sealing member (91), (20) is a passage extending from the connection port (15C) of the flow control valve (15), (21)
is a passage extending from the upper end of the filling pipe (3), and there is a connection port C22a at the confluence of the passages (19) (20X21).
)<22b)C22C) is provided. (23) is a lot 1 that is moved up and down by means not shown, and (24) is a container platform that is moved up and down by means not shown. Note that the pressure inside the filling tank (2) is normally higher than the atmospheric pressure inside the filling pipe (3), and the liquid valve (5) overcomes the force of the spring (7) and fills the filling tank (2)! (3) is cut off as shown in Figure 6. Further, the six valves mentioned above are opened and closed by mechanical means (not shown). Also counter valve (10)
is a state in which connection ports (10a) (IOh) (10C) are closed, (10α) and (IOA) are in communication, and (IOb) and (10C) are in communication. The flow control valve (15) is connected to the connection port (1
5 (ZX15h) (t5r) closed state, (xs
a) (15h) (x5c) i = It is possible to switch to the first state where they are in communication and the state where (15α) and (15A) are in communication, and the snift valve (22) is connected to the connection port (22α).
(22h) <22c> is closed, (22α) and <22b) are in communication, and (22α) and (22b) are in communication.
2? ), (22b) and (22?) can be switched to a state where they are in communication. In Fig. 4, (25) is the indexing screw, (26) is the artificial star wheel, (27) is the filling machine, (28) is the transfer star wheel, (29) is the capping machine, and (30) is the outlet. It's a star wheel.

Next, the operation of the liquid filling device will be explained. The containers are fed to the filling machine (27)K via an indexing screw (25) and an inlet starwheel (26). Around the filling machine (27), there is a container platform (24) that moves in synchronization with the pulp block (4) of the filling machine (27), and the container (1) is placed on the container platform (24) K. be done.

The container (1) moves with the rotation of the filling machine (27) in the direction of the arrow, during which time it is filled with liquid, sent to the capping machine (29) via the transfer star wheel (28), and capped.
It is discharged from the exit star wheel (30) K.

Next, details of the filling process will be explained. Container stand (24
), when the container (1) is pressed against the sealing member (9), the connection port (10αX
l0A) is communicated. On the other hand, between the connection port (10α) (10C) and (10AX10C) of the counter valve (lO) and the connection port (15α) (15A) of the flow control valve (15)
(15C) and the connection port (22) of the snift valve (22).
α)<22b) (220) and the liquid valve (5) is closed. Counter valve (lO) connection port (10αXl0b
), counter gas is introduced from the filling tank (2) into the container (1) via the counter passage (8),
The inside of the container (1) is at the same pressure as the inside of the filling tank (2). When the inside of the container (1) reaches the same pressure as the inside of the filling tank (2), a rod (23) (not shown) is attached to the rod to close the connection port (10α) (10h) of the counter valve (10). The liquid valve (5) is lifted by the force of the sword, and the filling tank (2) and the filling pipe (3) communicate with each other.
Filling of liquid begins.

At the start of filling, the connection ports (15α) (15b) (15
Since part C) is closed, the flow rate of the liquid is kept very low as the gas pressure inside the container increases, and therefore, the impact upon collision with the bottom of the container is alleviated, minimizing foaming and gas entrainment. can be kept to a minimum. Next, the connection ports (15eL) (15A) of the flow rate control valve (15) are communicated, and the gas in the container (1) flows from the lower end of the exhaust passage (11) through the float valve (12) to the 9 passage (13). The gas flows through the atmosphere release tank (14) and is discharged to the atmosphere while being throttled by the small orifice (16). In this process, the filling speed progresses while being kept low, and when the filling liquid level reaches the lower end of the filling pipe (3), the connection port (15α) (15A) (1
5C) are communicated with each other, and the gas in the container (1) is discharged through the small orifice (16) and the large orifice (18) to the atmosphere release tank (14).

Therefore, the amount of gas discharged from the container (1) increases, and the filling speed increases. The filling liquid level rises and the liquid flows into the exhaust passage (1
1) flows into the exhaust passage (11) from the lower end and pushes up the ball (12α) of the float valve (12), causing the ball (
12α) is pressed against the sealing surface (12') K,
The gas discharge passage in the container (1) is blocked, and the liquid container (L
The flow into the container (11) is stopped, and the head gas in the container (11 is -
Gas is trapped in the gas. This means that the exhaust passage (11
) means that the final liquid level after filling is determined by the lower end position. Next, the liquid valve (5) is closed by pressing down the liquid valve (5).The liquid valve (5) is closed after waiting for the air bubbles in the liquid in the container (1) to rise. (
(hold stroke) may be performed.

At the same time as the liquid valve (5) is closed, the flow control valve (15)
When the connection port (15α) (15AX15C) is closed, the connection port (IOA) of the counter valve (10) (
10C) and the connection port (22α) of the snift valve (22)
)<226), communication is established. At this time, the counter valve (
10) connection port (10α) (IOb), (10αX1o
C) and the connection port (22α) of the snift valve (22)
<22c), C22b) (22C) is closed.

Between the connection port (IOb) (10c) of the counter valve (10), the connection 0 (10c) of the counter valve (10) and the sealing surface (12c) ff are pressed against the ball (12α).
) is a part of the exhaust passage (11) between the filling tank (2)
The counter passage (8) is filled with counter gas and then closed. Snift valve (22) connection port (22α)
(225) communicates with the internal pressure of the container (11) and the filling pipe (
3) becomes the same pressure, and the liquid in the filling tube (3) falls into the container (1). Next, connect the snift valve (22) (224X22c), (22A) (22c) h:
The gas in the container (1) and the filling tube (3) join from the passage (19) and (21) through the snift valve (22), and the passage (17) and the large orifice (18) The head gas is discharged to the atmosphere from the atmosphere release tank (14) while being further constricted, and the head gas in the container (1) becomes atmospheric pressure.

As the pressure inside the container (1) is reduced, the counter gas filling the exhaust passage (11) and a part of the passage (13) expands, and the sealing surface ( The ball (12α) that was blocking the sealing surface (12C) is pushed down, and the stone, R (12b) K is pressed, flowing from the lower end of the exhaust passage (11) and the ball (12α) is pressed against the sealing surface (12?)K. The liquid that was in the container (1) is pushed back into the container (1). The reason for doing this above is that the passage for the liquid that has risen in the exhaust passage (11)K is narrow, so even if both ends of the exhaust passage (11) are opened to the atmosphere, the liquid is retained due to the surface tension of the liquid. This is to solve the problem of not falling.

When the above filling process is completed, the container platform (24) is lowered, and the container (1) is transferred to the transfer star wheel (28) by the movement of the container platform (24).

As described above, when the container is pressed against the sealing member after the filling of the liquid into the container is completed, a residual whistle is generated between the filling pipe and the lower end of the exhaust passage and the float valve. Since the liquid is pushed back into the container, reliable liquid filling without foaming or liquid clogging is guaranteed.Also, since there is no discharge of liquid to the outside of the machine, it is possible to prevent deterioration of the working environment, etc. Loss can also be prevented.

Figure 5 shows another embodiment in which an exhaust passage (11) and a restrictor (31) are added between the counter valve (10) and the float valve (12), and the container (1) is filled with liquid. Valve (5) The operation until the flow rate control valve (15) is closed is the same as in the previous embodiment, but the operation thereafter is as follows.

Connection port (22α) of snift valve (22) < 22b
) is communicated with the liquid in the filling tube (3) to the container (1).
fall inside. Next, connect the connection port (2) of the snift valve (22).
2α) (22r) and C22h) (22') are communicated, and the gas in the container (1) and the filling tube (3) is connected to the passage (1).
9) Join from (21) via the snift valve (22),
4-JF is discharged to the atmosphere from the atmosphere release tank (14) while being constricted by the passageway (17) and the large orifice (18).
The pressure in the container (1) becomes atmospheric.

After that, connect the connection port (22α) (22) of the snift valve (22).
c), (22 (22c) remains in communication, and the flow control valve (15) connection port C15a) C15b) <15e)
remains closed, and the connection port (1) of the counter valve (10)
0AX10c) is communicated, and the counter gas of the filling tank (2) is throttled (31) through the counter passage (8).
Push down the ball (12α) pressed against the sealing surface (12c) while being squeezed by K, and open the exhaust passage (11
) The liquid that was flowing into the container (1) is pushed back into the container (1),
The pressurized air inside the container head sweep is discharged to the atmosphere from the atmosphere release tank (14) via the air intake valve (22) and the large orifice (18). When the liquid in the exhaust passage (11) is pushed back, the connection port (IOA) of the counter valve (1o) (
10C) should be closed.

When the above filling process is completed, the container +1) becomes the star wheel (28) as in the embodiment shown in FIG. passed on. In both the embodiments shown in FIGS. 3 and 5, the liquid flows through the exhaust passage (1
1), the ball (12α) hits the sealing surface (12C
), when the liquid level inside the container is against the exhaust passage (
11) It rises from the lower end, and in the process of pushing the liquid in the exhaust passage (11) back into the container (1), the exhaust passage (11)
) is discharged into the liquid in the container (1), but in the embodiment shown in FIG.
Since the counter gas from the filling tank (2) is supplied in an amount commensurate with the throttling ratio, the liquid in the exhaust passage (11) is slowly discharged into the liquid in the container (1). ) The foaming of the liquid in the liquid can be suppressed to a low level. In addition, when the liquid in the exhaust passage (11) is pushed back, the pressure inside the container (1) is released to atmospheric pressure by operating the snift valve (22), and then the container (1) is lowered while being lowered. (
It is also possible to carry out the process when the liquid level in the exhaust passage 11 is lower than the lower end of the exhaust passage.

The present invention has been described above with reference to embodiments, but of course the present invention is not limited to such embodiments, and the design of the seed food may be modified without departing from the spirit of the present invention. be.

[Brief explanation of the drawing]

FIG. 1 is a vertical side view showing a conventional liquid filling device, FIG. 2 is an enlarged vertical side view thereof, FIG. 6 is a vertical side view showing a liquid filling device according to the present invention (one embodiment), and FIG. A construction drawing showing the liquid filling device and surrounding equipment, and FIG. 5 is a vertical sectional side view showing another embodiment of the liquid filling device of the present invention. Tank, (3)...
Filling pipe, (8)...Counter passage, (11)...
・Exhaust passage, (13X17X20)...Atmospheric side passage, (19)...Snift passage, (21)・
...Filling pipe side passage, (10X15X22)...Valve. Sub-agent: Patent attorney: Shige Okamoto, 2 other people

Claims (1)

[Scope of Claims] l) In a liquid filling method in which a long filling pipe is inserted close to the bottom of the container to fill the liquid from the liquid tank into the container, after the filling of the liquid into the container is completed, the inside of the liquid tank and the pipe are During the process, the counter gas is trapped in a part of the exhaust passage that communicates the upper part of the tank with the container filled with liquid, and the residual liquid that rises up the exhaust passage during sniffing is removed. A liquid filling method characterized in that the liquid is pushed back into the container by expansion of the counter gas as the pressure in the upper space inside the container is reduced at that time. 2) In a liquid filling device that inserts a long filling pipe close to the bottom of the container to fill the liquid from the liquid tank into the container, there is a counter passage extending from the liquid tank into the container, and an atmosphere side passage whose one end is connected to the atmosphere side. , an exhaust passage for the counter gas in the container which is connected to the counter passage and the atmosphere side passage through a valve, and a snift passage extending from the valve provided at the other end of the atmosphere side passage to the upper space inside the container; A liquid filling device comprising a filling tube side passage extending from a valve provided at the other end of the atmosphere side passage to an upper part of the filling pipe.