JPH0441041Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a filling nozzle device for filling a bag of a bag-in-box with a cooled liquid.

[Prior art] A conventional filling nozzle device for filling the bag with cooled liquid by applying it to the bag spout of a bag-in-box is a device that is placed at the bottom of a sterile chamber 1' as shown in the explanatory view of FIG. There is an opening b for inserting a bag spout a, and a liquid filling nozzle 2 is fixed by hanging down from the top plate of the sterile chamber 1'. The liquid is filled in a sterile state, and c is the filling liquid feed pipe, and a steam seal is installed at the top of the sterile chamber 1' of the nozzle to prevent water droplets attached around the filling nozzle from entering the chamber. Some have a part d.

[Problem that the invention attempts to solve]

However, this nozzle device is inconvenient because the filling liquid that is injected when the device is stopped, which must be cold, is heated, and it is also mechanically complex.
In addition, water droplets due to condensation adhere to the outer circumference of the nozzle both outside and inside the sterile chamber 1, and this dripping water is prevented from entering the chamber from the outside above the sterile chamber. It must also be ensured that it does not enter the spout a of the bag from the bottom end.

Therefore, in view of the above-mentioned circumstances, the present invention prevents water droplets from entering the sterile chamber from the outside.
In addition, inside the sterile chamber, water droplets that condense on the outside of the nozzle are prevented from flowing down.
Furthermore, water droplets due to condensation that form at the tip of the nozzle
The purpose is to prevent it from entering the spout.

[Means for solving problems]

The present invention was developed in consideration of the above-mentioned problems, and consists of a sterile chamber whose interior is kept under positive pressure with sterile air and sprayed with sterile water; The sterile chamber is provided with a nozzle that can be raised and lowered, and has an opening at the bottom for inserting the spout of the bag, and a spout located at the lower surface of the bottom of the chamber for inserting the spout into the opening. and a spout holder that surrounds and closes the opening around the spout, and the top part has an integral cylindrical part made of a standing wall that surrounds the filling nozzle and has an inner diameter larger than the diameter of the filling nozzle, On the other hand, the filling nozzle has an umbrella-shaped part whose outer diameter at the lower end is larger than the diameter of the opening, and an outer cover with an open lower end, which is composed of a hanging wall surrounding the cylindrical part and having an inner diameter larger than the outer diameter of the cylindrical part. Provided is a filling nozzle device, characterized in that a space is provided between the upright wall of the cylindrical portion of the sterile chamber and the hanging wall of the outer cover of the filling nozzle, and the outer cover covers the cylindrical portion. It is something to do.

[Effect]

In the present invention, first, the inside of the sterile chamber is brought into a positive pressure state, the cylindrical part of the sterile chamber through which the filling nozzle passes is covered with the outer cover of the filling nozzle, and sterile air is passed between the cylindrical part and the outer cover. This prevents water droplets from entering the sterile chamber from outside the sterile chamber.

Furthermore, within the sterile chamber, sterile air flows from below to above along the filling nozzle between the cylindrical portion and its cover, thereby suppressing water droplets condensed on the nozzle from flowing down.

Even if water droplets condensed on the umbrella-shaped portion at the lower end of the filling nozzle fall, there is no risk of them falling into the spout portion because the diameter is larger than the opening.

[Example] The present invention will be further explained by referring to the illustrated example. Figure 1 is a cross-sectional explanatory diagram of the filling nozzle device of the present invention, where 1 is a sterile chamber, 2 is a filling nozzle,
One bag is filled with liquid for each stroke. The bottom of the sterile chamber 1 is provided with an opening 3 into which the spout A of the bag is inserted from below, and a spout holder 4 is provided on the lower surface of the bottom.When the spout A is locked with the spout holder 4 and the opening around the spout is closed, the chamber is sterilized. The chamber 1 is raised and the spout A is fixed to the lower end of the filling nozzle 2 of this filling nozzle device to be filled with liquid. 5, 5 is a chlorine water spray device, and 6 is a sterile air blowing device. The inside of the sterile chamber 1 is always maintained at a positive pressure state with sterile air, and a filling nozzle 2 passes through the center of the upper top plate of the sterile chamber 1 so as to be relatively movable up and down, and its lower end is connected to an umbrella. shape that opens outward (this umbrella-shaped part is 7
), the outer diameter of its lower end is at least larger than the diameter of the spout opening 3 at the bottom of the sterile chamber, and it expands outward, so that the outer periphery of the nozzle 2 is cooled by the filling liquid. Even if the water droplets 7a of condensation formed in the opening 3 flow down, since the periphery of the opening 3 rises slightly upward, the water droplets 7a will not flow down beyond this edge. Therefore, moisture in the sterile chamber and chlorinated water do not enter the spout.

Reference numeral 8 denotes a filling liquid feeding pipe through which normally cooled filling liquid is sent.

Furthermore, in the center of the top of the sterile chamber 1, there is an integral cylindrical part 1a consisting of an upright wall surrounding the filling nozzle, and its outer periphery and top are fixed by an outer cover 9 with an open bottom surface consisting of a hanging wall attached to the filling nozzle 2. covered with a spacing of The sterile air flows to the outside of the sterile chamber 1 through the gap between the two walls, causing the umbrella 7 of the filling nozzle 2 to
A flow of sterile air flows from the bottom to the top around the filling nozzle 2, except for the filling nozzle 2. It goes without saying that the overlapping length of the cylindrical portion 1a and the outer cover 9 is longer than the length of the vertical movement of the sterile chamber. Furthermore, the outer cover 9 can prevent water droplets from condensation on the outer periphery of the hanging wall and the liquid feeding pipe 8 through which the filling liquid passes from entering the sterile chamber 1 . Reference numeral 10 denotes a steam barrier section through which steam S flows through a steam pipe 10a.

When the spout A is set in the spout holder 4, a certain amount of filling liquid is automatically injected from the filling nozzle 2 of the filling nozzle device into the bag via the spout A, and when it is finished, the sterile chamber 1 is lowered and the filling liquid is injected into the bag.
A predetermined amount of liquid is automatically filled into the bag with each stroke. The filling liquid is often at a temperature of 5 to 10℃,
Since airborne bacteria adhere to condensed water droplets, it is important to prevent water droplets from entering the chamber 1. In the sterile chamber 1, water droplets due to condensation of water in chlorinated water or sterilized air travel along the outer circumference of the nozzle and fall, but the umbrella-shaped part 7 that expands at the tip of the nozzle causes them to flow down to a position outside the spout opening 3. Therefore, entering into spout A is completely prevented.

[Effect of idea]

The filling nozzle device of the present invention has the above-mentioned configuration, and the inside of the sterile chamber is in a positive pressure state, and sterile air is passed between the cylindrical part of the sterile chamber and the outer cover of the filling nozzle that covers it. Since it flows to the outside, water droplets generated outside the sterile chamber are prevented from entering the sterile chamber, and water droplets condensed on the outer surface of the cylindrical portion and the outer surface of the outer cover are also prevented from entering the sterile chamber.

Furthermore, in the sterile chamber, sterile air flows from the bottom to the top along the filling nozzle, so that water droplets condensed on the outer surface above the umbrella-shaped part are prevented from falling.

Even if the water droplets that have condensed on the outer surface above the umbrella-shaped part start to flow down the umbrella-shaped part, and the water droplets that have condensed on the umbrella-shaped part start to flow down from here, the umbrella-shaped part can at least be inserted into the spout. Since it extends outward from the mouth, it does not enter the spout and can be filled in an aseptic state.

[Brief explanation of the drawing]

FIG. 1 is an explanatory sectional view of a filling nozzle device of the present invention, and FIG. 2 is an explanatory sectional view of a conventional filling nozzle device. 1... Sterile chamber, 1a... Cylinder part, 2...
Filling nozzle, 3... Opening, 4... Spout holder, 5... Chlorine water spray device, 6... Sterile air blowing device, 7... Umbrella-shaped part, 7a... Condensation, 8
...liquid feeding pipe, 9...outer cover, 10...steam barrier section, 10a...steam pipe, A...spout.

Claims (1)

[Scope of Claim for Utility Model Registration] The sterile chamber consists of a sterile chamber whose interior is maintained under positive pressure with sterile air and sprayed with sterile water, and a filling nozzle inserted from the top of the sterile chamber. is provided to be able to be raised and lowered freely, and has an opening at the bottom for charging the spout of the bag, and an opening around the spout located at the lower surface of the bottom of the chamber to surround the spout inserted into the opening. It has a spout holder that closes, and the top part has an integral cylindrical part that surrounds the filling nozzle and consists of an upright wall whose inner diameter is larger than the diameter of the filling nozzle. It has an umbrella-shaped part with an outer diameter larger than the diameter of the opening, and an outer cover with an open bottom end consisting of a hanging wall that has an inner diameter larger than the outer diameter of the cylindrical part and surrounds the cylindrical part. A filling nozzle device characterized in that the outer cover covers the cylindrical portion with a space provided between the upright wall of the cylindrical portion and the hanging wall of the outer cover of the filling nozzle.