JP3486218B2 - Siphon filling device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a siphon type filling device using a siphon effect which can be used in a filling machine of a food machine for filling a container such as a bottle or a can with a filling liquid such as drinking water up to a preset level. It is a thing.

[0002]

2. Description of the Related Art Conventionally, as a back pressure type filling valve for filling a bottle into which a liquid in a filler bowl is filled with a bottle, a conventional filling valve 3-8
The one shown in Japanese Patent No. 4797 is proposed. As shown in FIG. 2, a filling valve 108 is provided with a spacer 110 at the bottom of the filler bowl 109, and the clamp 1
11 is attached using a stud bolt 112 and a nut 113. Also, the filling valve 108
An inner actuating lever 115 is attached to an outer actuating lever 116 by bolts 117 and nuts 118 in order to move the charging cup 114 up and down. FIG. 2 shows a state in which the bottle 102 is clamped to the filling valve 108, and the air valve, the liquid valve, and the sniff hole are all closed. The filler bowl 109 is filled with a liquid to be bottled, and a counter pressure is applied to the upper portion thereof. Then, when the outer operation lever 116 is rotated clockwise by a mechanical operation in this state, the charging cup 114 is lifted by the force of the charging spring 120 to open the air valve, and the counter pressure in the filler bowl 109 is increased by the upper stem 121. , Lower stem 124, vent tube 13
4 through the vent hole 134a into the bottle 102, and the inside of the bottle becomes the same pressure as the inside of the filler bowl 109, the force of the spring 127 works to lift the lower stem 124,
The liquid valve is opened, and the liquid flows into the bottle through the elongated hole 123a of the spring case 127 and the screen 136.

At the same time, the air in the bottle 102 returns to the inside of the filler bowl 109 by going back through the passage under the counter pressure, so that the filling of the bottle is promoted. When the level of the liquid containing liquid rises and reaches the vent hole 134a, the bottle 10
The return air passage from inside 2 is closed, the pressure inside the bottle rises, and the surface tension of the screen 136 stops the flow of the liquid flowing from the filler bowl 109 into the bottle. At this time, the liquid that has already flowed from the screen 136 to the spreader 135 falls into the bottle 102 (this is called "god"). In addition, bottle part and filler bowl 1
The liquid is pushed up from the vent hole 134a to the inside of the vent tube 134 and the inside of the lower stem 124 by the pressure difference in 09, and the bottle filling ends in balance. After that, when the outer operating lever 116 is turned counterclockwise and returned to its original position by a mechanical operation, the air valve and the liquid valve are pushed down by the inner operating lever 115 and closed. After that, when the switching valve 143 is pressed, the concave groove 155 is formed in the lower sniff block 1.
30, the counter pressure of the counter chamber 158 flows into the bottle 102 through the pipe 159, and the pressure causes the liquid filled in the bottle above the vent hole 134a to flow through the vent tube 134, the lower stem 124, and the upper stem 121. After that, the packing 145 forming the check valve is pushed up and returned into the filler bowl 109 from the passage.
After that, the switching valve 143 is returned to the original state, and the sniff button 137 is pressed to open the conventional bottle mouth portion to the atmospheric pressure.
Then, the bottle 102 is lowered to complete the bottle filling process.

[0004]

However, in such a conventional rotary type filling machine for beverages, in order to fill at high speed while satisfying the taste accuracy, only a complicated mechanical structure and an expensive sensor are required. However, in order to fill with high capacity, a large number of filling valves are required, and thus there are many problems in terms of cost and maintenance. The present invention is intended to solve various problems in the conventional filling device, and provides a siphon-type filling device having a simple structure, a small number of movable parts, low maintenance cost, good maintainability, and high filling accuracy. Is what you are trying to do.

[0005]

For this reason, the present invention provides an injection pipe that is inserted into a container up to the filling liquid filling level, a supply pipe for supplying the filling liquid from the filling liquid storage tank to the injection pipe, and a surplus pipe. A collection pipe for collecting the filling liquid into a collection tank located below the filling liquid filling level of the container, and a connecting pipe between the filling pipe, the supply pipe, and the collecting pipe, and the filling pipe is provided when filling the filling liquid. And a switching valve for connecting the injection pipe to the recovery pipe when the filling liquid is not filled, which serves as a means for solving the problem. Further, the present invention closes when the filling liquid in the container reaches the filling level due to the siphon effect and opens and closes to prevent the filling liquid in the injection pipe from dropping into the container when the container is removed from the injection pipe. A valve is provided between the injection pipe and the recovery pipe, and an opening / closing valve is further provided at the tip of the injection pipe, or the switching valve has the function of the opening / closing valve. It is a means for solution.

[0006]

With the siphon-type filling device according to the present invention having the above-described structure, first, the container is positioned below the injection pipe in a state where the supply pipe and the injection pipe are closed by the switching valve, Move the container up until the inlet at the tip of the injection tube is located at the filling level, or place the injection tube at the mouth of the container and then lower the same to lower the inlet at the tip of the injection tube to the filling level. Located in FL. After that, the switching valve is switched to connect the injection pipe to the supply pipe during a certain period of time corresponding to the injection of the filling liquid to the filling level FL or above, or during the passage of a certain flow rate, so that the filling level of the container is higher than the appropriate filling level. Fill up to position with fill liquid. In addition, in the non-filling state where the filling operation is completed without considering the filling accuracy, the switching valve is switched to connect the injection pipe to the recovery pipe,
In this state, the excess filling liquid of the filling level FL or higher in the container is collected in the collection tank by the siphon effect, and
The container is filled with a fixed amount of the filling liquid defined by the filling level FL with high precision, and satisfactory filling accuracy can be obtained.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments of the drawings. FIG. 1 shows an embodiment of the present invention in which a container such as a bottle 1 penetrates a cap 3 having a communication hole 2 for communicating with the atmosphere. , The filling pipe 5 into which the filling port 15 at the lower end is inserted up to the filling liquid filling level FL, and the filling liquid 5 from the filling liquid storage tank (not shown).
A supply pipe 6 for supplying the filling liquid 4 to the injection pipe 4, and a recovery pipe 9 for recovering the excess filling liquid 7 in the shaded portion in the drawing into the recovery tank 8 at a position below the filling liquid filling level FL of the bottle 1 by the siphon effect. Is integrally connected, and a switching valve 10 that connects the injection pipe 4 to the supply pipe 6 when filling the filling liquid and connects the injection pipe 4 to the recovery pipe 9 when the filling liquid is not filled is provided. In the present embodiment, the switching valve 10 driven by the electromagnetic solenoid 11 is used, but it goes without saying that a switching valve driven by an air cylinder or the like can be used.
Further, the electromagnetic solenoid 11 is located above the valve switching position, but it may be located below.

On the other hand, when the filling liquid 5 in the bottle 1 reaches the filling level FL due to the siphon effect and then is closed and the bottle 1 is removed from the filling pipe 4, the filling liquid 5 remaining in the filling pipe 4 is closed.
An on-off valve 12 is mounted on the tip of the injection pipe 4 to prevent the water from falling into the bottle 1 by driving an electromagnetic solenoid 13, for example. It is also possible to employ an air cylinder instead of the electromagnetic solenoid 13. It should be noted that the drop-off prevention on-off valve 12 is most surely attached to the tip end portion of the injection pipe 4, but in reality, even if it is attached between the injection pipe 4 and the recovery pipe 9, the drop-off prevention is sufficiently prevented. As a result, it is possible to secure the filling accuracy. Further, the switching valve 10 is provided with the injection pipe 4, the supply pipe 6, and the recovery pipe 9 fully closed.
As the stage switching, the switching valve 10 can also be provided with the function of the on-off valve 12 for confining the injection pipe 4. Here, the on-off valve 12 can be turned on and off by pressure detection by a pressure detector (not shown), but can also be closed after a certain time by a timer. In this case, of course, it can be opened by switching the electromagnetic solenoid 13.

In the siphon-type filling device 14 thus constructed, first, the switching valve 10 closes the gap between the supply pipe 6 and the injection pipe 4 and the open / close valve 12 is closed in the solid line state of FIG. , The bottle 1 is located below the filling pipe 4, and the bottle 1 is moved upward until the filling port 15 at the tip of the filling pipe 4 is located at the filling level FL, or the filling pipe is placed above the mouth of the filling pipe 1. After positioning 4, the injection pipe 4 is lowered to position the injection port 15 at the tip of the injection pipe 4 at the filling level FL. Although the on-off valve 12 is installed here, if the switching valve 10 is configured to close the injection pipe 4 to prevent the filling liquid 5 from flowing out, the on-off valve 12 need not be installed. There is no problem because the effect of flavoring due to fluffing is small. After that, the opening / closing valve 12 is opened and the switching valve 10 is opened.
Is switched to the dotted line state in FIG. 1, the supply pipe 6 and the injection pipe 4 are connected, and the filling of the filling liquid 5 is started. When the filling liquid 5 is injected to the filling level FL or higher by the start of the filling, the injection pipe 4 is connected to the supply pipe 6 for a certain period of time or while passing a certain flow rate, so that the filling level of the bottle 1 is appropriately adjusted. FL
The filling liquid 5 is filled up to the above position. Further, in the non-filling state in which the filling operation is completed without considering the filling accuracy, the switching valve 10 is switched from the dotted line state in FIG. 1 to the solid line state, and the injection pipe 4 is connected to the recovery pipe 9 below the filling level FL position. In this state, the excess filling liquid 7 having the filling level FL or more in the bottle 1 is recovered by the siphon effect in the recovery tank 8
At the same time, the bottle 1 is highly accurately filled with a fixed amount of the filling liquid 5 defined by the filling level FL, and a satisfactory filling accuracy can be obtained.

Further, the on-off valve 12 is closed after the collection of the surplus filling liquid 7 due to the siphon effect is completed, and the bottle 1 is prevented in a state in which the filling liquid 5 slightly remaining at the downward tip of the injection pipe 4 is prevented from dropping.
Is removed from the injection tube 4, the next bottle 1 is set, and the above-mentioned operation is repeated, whereby the taste accuracy can be further improved, and even if the filling liquid containing a solid substance is filled, the filling is clogged. It is possible to repeat the filling without interruption. Needless to say, the filling liquid 5 collected in the collection tank 8 can be filled again in the container as the filling liquid 5. Further, the liquid is supplied to the supply pipe 6 by pumping, or a tank (not shown) is installed at a position higher than the supply pipe,
The filling liquid 5 can also be supplied. Also, the switching valve 1
It goes without saying that other switching valves can be used for 0 as well within the scope of the present invention.

[0011]

As described above in detail, according to the present invention, since the filling liquid overfilled in the container is sucked up and collected by the siphon effect, there are few moving parts and maintenance is easy, and the structure is simple and the production cost is low. Is cheap. Furthermore, since a large filler bowl and a liquid level control device, which are conventionally used, are not required, a filling device with good filling accuracy can be obtained at low cost. Moreover, there is a space in the upper portion of the injection pipe, the structure of the injection pipe portion is simple, and the setting and resetting of the container corresponding to the filling operation can be operated in an optimum state. Further, since a complicated device is not required above the container to be filled, the sanitary property can be further improved.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a siphon type filling device showing one embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a conventional back pressure filling valve.

[Explanation of symbols]

1 bottle 2 communication holes 3 caps 4 injection tubes 5 Filling liquid 6 supply pipes 7 Excess filling liquid 8 collection tanks 9 Recovery pipe 10 switching valve 11 Electromagnetic solenoid 12 open / close valve 13 Electromagnetic solenoid 14 Siphon type filling device 15 Inlet

Continuation of the front page (56) Reference JP-A-2-242785 (JP, A) JP-A-5-170288 (JP, A) Actual opening 4-62604 (JP, U) Actual opening 3-84797 (JP , U) Jitsuko Sho 8-17967 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) B67C 3/18

Claims (4)

(57) [Claims] 1. An injection pipe inserted into a container up to the filling liquid filling level, a supply pipe for supplying the filling liquid from the filling liquid storage tank to the filling pipe, and an excess filling liquid at the filling liquid filling level of the container. A collection pipe for collecting in a collection tank located below, and a connection part between the injection pipe, the supply pipe, and the collection pipe, the injection pipe is connected to the supply pipe when filling the filling liquid, and the filling pipe is filled when the filling liquid is not filled. A siphon-type filling device, comprising: 2. The siphon-type filling device according to claim 1, wherein the filling liquid in the container is closed when the filling liquid reaches a filling level due to the siphon effect, and the filling liquid in the filling pipe is filled when the container is removed from the filling pipe. A siphon-type filling device, characterized in that an on-off valve is provided between the injection pipe and the recovery pipe to prevent it from falling inside. 3. The siphon-type filling device according to claim 2, wherein the on-off valve is provided at the tip of the injection pipe. 4. The siphon-type filling device according to claim 2, wherein a switching valve has a function of the opening / closing valve.