JP2767874B2 - Filling amount adjusting device of filling device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filling device, and more particularly, to a filling device in which a filling liquid flowing into an air pipe at the end of filling is returned into a container.

`` Prior art '' Conventionally, as a filling device, a detector that detects a liquid level in a filling liquid tank that stores a filling liquid, and a conduit that communicates the filling liquid tank with a supply source of the filling liquid are provided. An on-off valve,
A control device that receives the detection signal from the detector, controls the opening and closing of the on-off valve, and controls the height of the liquid level in the filling liquid tank, and the filling liquid that is provided in the filling liquid tank and fills the container. There is known a device provided with a filling valve for filling (JP-A-58-52090 and JP-A-58-90096).

The filling valve usually has a filling liquid passage communicating with the filling liquid tank, a liquid valve for opening and closing the filling liquid passage, a bottle packing for sealing the mouth of the container, and discharging air in the container. An air pipe is provided, and the liquid valve is opened to fill the container with the filling liquid, and the air in the container is discharged to the outside through the air pipe, and the filling liquid filled in the container flows into the air pipe. When the liquid level matches the liquid level in the filling liquid tank, the filling of the filling liquid is terminated, and when the container is unsealed, the filling liquid flowing into the air pipe is returned to the container. I have to.

Therefore, in this type of filling apparatus, the filling liquid that has flowed into the air pipe of the filling valve during the filling operation is finally returned to the container, and the amount including the filling liquid that has fallen from this air pipe is ultimately reduced. Is the total filling amount of the filling liquid filled in the container.

[Problem to be Solved by the Invention] In the filling device, the filling liquid filled in the container flows into the air pipe, and the liquid level of the filling pipe matches the liquid level of the filling liquid tank. Then, the filling of the filling liquid is completed, so that the same container is filled with the same volume of the filling liquid.

In this type of filling apparatus, in order to change the filling amount to be filled into the container, usually, the height position of the bottle packing for sealing the mouth of the container is changed to protrude downward from the bottle packing. The filling amount is changed by changing the amount of protrusion of the air pipe, thereby changing the volume of the remaining space remaining in the container when the filling liquid is filled.

However, in the conventional apparatus for changing the height position of the bottle packing, the change operation has been complicated.

"Means for solving the problem" In view of such circumstances, the present invention sets the liquid level in the filling liquid tank in the control device according to the filling amount of the filling liquid to be filled in the container. And a driving means for opening and closing the on-off valve so that the liquid level in the filling liquid tank matches the set value set by the input means.

[Operation] According to the above configuration, by changing the liquid level in the filling liquid tank, the liquid level of the filling liquid flowing into the air pipe at the end of filling is changed, thereby releasing the sealing of the container. In this case, the amount of the liquid to be returned from the air pipe to the container can be changed.

Therefore, it is possible to change the filling amount in the container very easily only by setting the different liquid level by the input means.

Embodiment The present invention will be described below with reference to the illustrated embodiment. In FIG. 1, the rotary filling apparatus includes a rotating body 1 driven to rotate in one direction, and a filling liquid 2 is provided on the rotating body 1. Is provided. In the illustrated embodiment, the filling liquid tank 3 is formed in an annular shape.
When the is rotated, the height difference between the inner liquid surface and the outer liquid surface is reduced.

A plurality of filling valves 5 for filling the container 4 with the filling liquid 2 are provided at predetermined intervals in the circumferential direction on the bottom surface of the filling liquid tank 3. At a lower position where the filling valve 5 is provided, an elevating table 6 for mounting and elevating the container 4 is provided. Each elevating table 6 is rotated integrally with the rotating body 1 and in a predetermined section. It is designed to be raised and lowered.

2a to 2c, when the lifting table 6 is raised, the lower end of the air pipe 10 is relatively inserted into the empty container 4 placed on the lifting table 6, and The upper end of the container 4 is pressed against the bottle packing 11 of the filling valve 5 to seal the container 4 (see FIG. 2a).

When the lifting table 6 is further raised from this state, the annular member 12 to which the bottle packing 11 is attached is pushed upward against the elastic force of the spring 13. As a result, the annular valve element 14 provided at the lower end of the annular member 12 is separated from the valve seat 15 formed at the lower end of the air pipe 10, so that the liquid valve constituted by the valve element 14 and the valve seat 15 is provided. 16 is released.

Then, the filling liquid in the filling liquid tank 3 is filled into the container 4 through the filling liquid passage 18 formed inside the cylindrical valve body 17 for fixing the air pipe 10 to the filling liquid tank 3 (the first liquid). 2a).

When the filling liquid 2 flows into the container 4, the air in the container 4 sealed by the bottle packing 11 is discharged to the upper space in the filling liquid tank 3 through the air pipe 10, and
The liquid level of the filling liquid 2 filled in the inside of the air pipe 10
When reaching the lower end of the container, leaving a space above the container 4,
The filling liquid 2 in the container 4 further flows into the air pipe 10.

Thereafter, when the level of the filling liquid flowing into the air pipe 10 matches the level of the filling liquid 2 in the filling liquid tank 3, the inflow of the filling liquid ends (FIG. 2b). In this state, a predetermined amount v1 of the filling liquid 2 is filled in the container 4,
On the other hand, a predetermined amount v2 of the filling liquid 2 also flows into the air pipe 10.

Next, in this state, the elevating table 6 and the container 4 are lowered, so that the valve element 14 is seated on the valve seat 15 by the resilience of the spring 13 to close the liquid valve 16. Is separated from the bottle packing 11. As a result, the filling liquid 2 remaining in the air pipe 10 falls into the container 4, and finally a predetermined amount V (v1 + v2) of the filling liquid 2
Is filled.

Therefore, by controlling the liquid level in the filling liquid tank 3 and changing the amount v2 of the filling liquid returned from the air pipe 10 into the container 4, the amount of the filling liquid finally filled in the container 4 can be increased. V can be adjusted.

Next, as shown in FIG. 1, the filling liquid tank 3 can be supplied with a filling liquid from a filling liquid supply source 21. The filling liquid in the supply source 21 is supplied to a conduit 22 by a pump 22.
23, an on-off valve 24, a rotary joint 25 and a conduit 26 are fed into the filling liquid tank 3.

At a position upstream of the rotary joint 25, a hydraulic pressure sensor 27 for detecting a hydraulic pressure in the filling liquid tank 3 is provided. Liquid surface height H of filling liquid 2 in tank 3
Can be detected.

The control device 28 includes input means 31 for setting various liquid level heights, and the on-off valve so that the liquid level height H in the filling liquid tank matches the set value set by the input means 31. twenty four
And a driving means 32 for driving the opening and closing of the motor. Even if the input means 31 can directly input the liquid level or a numerical value corresponding thereto, or by inputting the type of the filling liquid, the liquid level corresponding to the liquid type is automatically set. It may be set.

In the above configuration, for example, when the container 4 is filled with 200 g of the liquid A having a specific gravity of 1.00, the total volume V of the liquid A to be finally filled into the container 4 may be 200 ml. In this case, in the state of FIG. 2b in which the inflow of the filling liquid has been completed, if the filling amount v1 filled in the container 4 is 180 ml,
The filling amount v2 in the air pipe 10 needs to be 20 ml.

In this case, when the input means 31 directly inputs the above 20 ml to the control device 28, or inputs that the type of the filling liquid is the liquid A, the control device 28 outputs the internal diameter of the air pipe 10 which has been input in advance. From the length and the like, the liquid level H is calculated so that the filling amount v2 in the air pipe 10 becomes 20 ml.

Further, the control device 28 detects the liquid surface height H in the filling liquid tank 3 based on a signal from the liquid pressure sensor 27, and controls the opening / closing valve 24 to be opened and closed by the driving means 32. Is controlled so that the liquid level height H in the inside coincides with the calculated liquid level height H.

Therefore, according to the present embodiment, 200 g of the liquid A is contained in the container 4.
Clearly, it can be filled.

On the other hand, 200 g of liquid B having a specific gravity of 1.05 was placed in the same container 4.
In the case of filling, the total volume V of the liquid B to be finally filled in the container 4 is about 190.5 ml. Even in this case, since the filling amount v1 filled in the container 4 is 180 ml, the filling amount v2 in the air pipe 10 needs to be 10.5 ml.

Therefore, when the input means 31 directly inputs the above 10.5 ml, or inputs that the type of the filling liquid is the liquid B, the control device 28 determines whether the filling amount v2 in the air pipe 10 is sufficient.
The liquid level H in the filling liquid tank 3 is controlled so as to be 10.5 ml, so that the container 4 is filled with 200 g of the liquid B.

FIG. 3 shows another embodiment of the present invention. In the above embodiment, the liquid level sensor 27 can detect the liquid level H in the filling liquid tank 3. In the example, the liquid level H can be detected by the float 36 and the potentiometer 37.

That is, in this embodiment, the arm 39 is swingably supported by the fulcrum 38 in the filling liquid tank 3,
The float 36 is attached to the distal end of the arm 39, and a link 40 is attached to the end of the arm 39, so that the link 40 can be moved up and down as the float 36 moves up and down.

The vertical displacement of the link 40 can be detected by the potentiometer 37 provided outside the filling liquid tank 3, and the detection signal detected by the potentiometer 37 is controlled to open and close the on-off valve 24 via a slip ring (not shown). The control device 28 is input.

It is apparent that the same operation and effect as those of the above-described embodiment can be obtained by such a configuration.

Further, as another example of the present invention, the capacitance sensor may be immersed in the filling liquid to detect the liquid level from the capacitance that changes according to the fluctuation of the liquid level in the filling liquid tank. Good. In particular, if a plurality of the capacitance sensors are arranged at equal intervals in the circumferential direction in the filling liquid tank and the average value is calculated, the measurement error of the liquid level can be reduced.

"Effects of the Invention" As described above, according to the present invention, it is possible to change the filling amount in the container very easily by simply setting the required liquid level by the input means. can get.

[Brief description of the drawings]

FIG. 1 is an overall view showing one embodiment of the present invention, FIGS. 2a to 2c are cross-sectional views showing different states of the filling valve 5 in FIG. 1, and FIG. 3 is another embodiment of the present invention. It is a schematic structure figure of the important section shown. 2 Filling liquid 3 Filling liquid tank 4 Container 5 Filling valve 10 Air pipe 11 Bottle packing 16 Liquid valve 18 Filling liquid passage 21 Supply source , 23,26 ... Conduit 24 ... On-off valve, 27 ... Hydraulic pressure sensor (detector) 28 ... Control device, 31 ... Input means 32 ... Drive means 36 ... Float 37 ... Potentiometer (detection vessel)

Claims (1)

(57) [Claims] A detector for detecting a liquid level in a filling liquid tank for storing the filling liquid; an on-off valve provided in a conduit communicating the filling liquid tank with a supply source of the filling liquid; A control device that controls the opening and closing of the on-off valve in response to a detection signal from the container and controls the level of the liquid level in the filling liquid tank, and fills the filling liquid into the container provided in the filling liquid tank. A filling valve, wherein the filling valve is a filling liquid passage communicating with the inside of the filling liquid tank, a liquid valve for opening and closing the filling liquid passage,
A bottle-neck packing that seals the mouth of the container, and an air pipe that discharges air in the container are provided. The liquid valve is opened to fill the container with the filling liquid, and the air in the container is discharged through the air pipe. When the filling liquid filled in the container flows into the air pipe and the liquid level matches the liquid level in the filling liquid tank, the filling of the filling liquid is terminated, and the container is further sealed. In the filling device, the filling liquid flowing into the air pipe is returned to the container when the pressure is released, wherein the control device controls the liquid in the filling liquid tank according to a filling amount of the filling liquid to be filled in the container. Input means for setting the height of the surface, and driving means for opening and closing the open / close valve so that the liquid level in the filling liquid tank matches the set value set by the input means. Filling device Filling amount adjustment device.