DESCRIPTION

Technical field

The present invention relates generally to food packaging in light industry and specifically to aseptic packaging bag of liquid products, according to preamble of Claim 1.

Background

Existing standard aseptic bags have fully sealed gland type mouths.

Such mouth has the widest application, and is applicable for general aseptic bag filling machines. As such, mouth has a one-time press-in structure, and is pressed into the seat of the aseptic bag by means of shrink fit after filling, it cannot be pulled out after press-in. Thus, when the material in the bag needs to be exported, destructive process such as opening the bag by cutting has to be used.

Such mouth does not support liquid discharge, cannot be connected with automatic liquid discharge equipment such as bag-in-box (a kind of small volume aseptic bag) field preparation machine, and cannot realize quantified automatic liquid discharge. Such shortcoming causes great restriction to application of bag-in-box on field preparation machine.

The technical problem to be solved is to overcome the shortcoming of existing technology and provide a kind of aseptic bag quick connection device that can be both used for general aseptic bag filling machine and connected with field preparation machine for liquid discharge.

The above mentioned problem is solved by an aseptic bag quick connection device according to claim 1.

The aseptic bag mouth is fixed with the mouth sealing cover through spot welding.

The outline dimension of the aseptic bag mouth is consistent with that of existing standard aseptic bags, and holes are set in the middle of the mouth for liquid discharge.

The aseptic bag mouth has arc-shaped grooves on the upper surface, and the lower surface of the mouth is sealed with laminate compound film.

The arc-shaped heaves of the mouth sealing cover have the same shape as the arc-shaped grooves on the upper surface of the bag mouth, used for sealing.

The outer dimension of the inner rings of the heaves on the lower surface is consistent with the inner dimension of the holes in the mouth.

The dimension of the outer rings of the heaves on the lower surface is consistent with the dimension of the grooves in the mouth.

By virtue of the matching of these two parts, the bag mouth can be fastened tightly with the sealing cover. Meanwhile, the sealing cover is fixed with the bag mouth through spot welding.

After an aseptic bag is filled on a filling machine, the filling machine can press the bag mouth covered with the sealing cover into the seat of the aseptic bag to form close connection. Meanwhile, as the bottom of the bag mouth is sealed with laminate compound film, which can isolate the liquid in the bag from the atmosphere, the aseptic condition inside the bag after filling can be ensured.

As the outline dimension of the aseptic bag mouth in this invention is completely consistent with that of existing standard aseptic bags, aseptic bags with the mouths described in this utility model can be used freely for the existing standard aseptic bag filling machines.

The mouth connection piece is used to connect the aseptic bag mouth with the liquid tube of the field preparation machine at the time of liquid discharge, so that the liquid in the aseptic bag can be exported automatically through the field preparation machine without damage of the bag.

The lower part of the connection piece is for connection with the bag mouth, and the oblique edge (or tip) at the bottom of the connection piece is used to pierce the laminate compound film at the bottom of the bag mouth.

There are four discharge holes at the lower position of the connection piece, which are evenly distributed in a circle and are used for liquid discharge after connection with the bag mouth.

There are two sealing rings at the middle section of the connection piece, which can ensure complete sealing of the bag mouth.

The upper and middle part of the connection piece has a rotating arm, there is a slot in each end of the rotating arm, and the dimension of the slot is consistent with the dimension of the outer edge of the bag mouth adjacent to the arc-shaped groove.

When the connection piece is correctly connected to the bag mouth, the connection piece can be rotated by certain angle through the rotating arm, while the contact between the slot and the outer edge of bag mouth can realize fixing of the connection piece on the bag mouth.

The upper part of the connection piece is used for connection with liquid tube of the field preparation machine, where firmness of the liquid tube after inserting can be secured by the ratchets of the connection piece.

This invention is designed to ensure convenient and sanitary discharge and use of liquid products packaged in aseptic bags, and to realize quick and clean connection between aseptic bags and discharging equipment.

Compared with existing technologies, the beneficial effects of this invention are as follows:

1. The bag mouth in this invention is disposable, so that sanitation of product filling can be ensured;

2. This invention helps to realize automatic liquid discharge of aseptic bags connected with field preparation machine, which cannot be achieved using existing technology. With this invention, the application field of aseptic bags can be broadened;

3. As automatic liquid discharge can be realized, users do not need to cut the aseptic bags to use the liquid inside, so that the using process is more convenient and sanitary;

4. Under existing technical conditions, sometimes it is necessary to arrange a second discharge mouth to discharge the liquid without damaging the bag. In the case of this invention, the functions of filling and discharge is integrated into a whole, and additional discharge mouth is unnecessary, leading to reduced cost;

5. The dimension of the bag mouth in this invention is consistent with that in existing technology, and bags with such mouths can be used for all filling machines compatible with existing bag mouths;

6. Users may choose to use the mouth connection piece on one-time basis or on repeated basis, providing more options for users in terms of cost reduction.

This invention is usable in packaging of dairy, beverage and liquid food, and also in other fields involving flowing products.

Description of the drawings

- Figure 1 is a structure sketch of the aseptic bag mouth according to the present invention;

- Figure 2 is a structure sketch of the mouth sealing cover in this utility model; - Figure 3 is a structure sketch of the mouth connection piece according to the present invention;

- Figure 4 is an assembly drawing of the aseptic bag mouth and the mouth sealing cover;

- Figure 5 is an assembly drawing of the aseptic bag mouth and the mouth connection piece at the time of inserting;

- Figure 6 is an assembly drawing of the aseptic bag mouth and the mouth connection piece at the time of using.

DETALIED DESCRIPTION

This invention is further described below in combination with the drawings and the embodiments.

It should be understood that the embodiments described here are only for the purpose of explaining this invention but do not restrict this invention.

An aseptic bag quick connection device 100 (Figure 6) consists of three parts, respectively an aseptic bag mouth 1 , a mouth sealing cover 2 and mouth connection piece 3.

As shown in Figure 1 , the aseptic bag mouth 1 has arc-shaped grooves 11 on the upper surface 12, and the lower surface 13 of the mouth 1 is sealed with laminate compound film 14.

As shown in Figure 2, the mouth sealing cover 2 has arc-shaped heaves 21 on the two sides 22, and the arc-shaped heaves 21 are fastened with the arc-shaped grooves 11 on the upper surface 12 of the bag mouth 1 for sealing.

As shown in Figure 3, the mouth connection piece 3 is a hollow tube piece, the upper end 31 of the connection piece is a connection 32 for connection with silica gel tube, the upper 31 and middle part 33 of the connection piece has a rotating arm 34. There is a slot 35 in each end of the rotating arm 34, the dimension of the slot is consistent with the dimension of the outer edge of the bag mouth 1 adjacent to the arc-shaped groove 11.

There are two sealing rings 36 at the middle position 37 of the connection piece 3.

There are four liquid discharge holes 38 at the lower middle position 39 of the connection piece 3.

There is an oblique edge (or tip) 40 at the bottom of the connection piece 3.

The mouth sealing cover 2 has a dismountable structure, and is connected to the aseptic bag mouth 1 through spot welding.

Assembly of bag mouth 1 and sealing cover 2 is shown in Figure 4.

The aseptic bag mouth 1 and the mouth connection piece 3 are used as whole to realize quick and reliable connection between aseptic bag and field preparation machine.

Separate aseptic bag mouth or mouth connection piece cannot provide such function.

Assembly of aseptic bag mouth 1 and mouth connection piece 3 is shown in Figure 5 and Figure 6.

At the time of using, firstly take the mouth sealing cover 2 down from the bag mouth 1 and then insert the lower part of the mouth connection piece 3 into holes in the middle of the bag mouth till complete contact between the rotating arm 34 on the connection piece 3 and the upper surface of the bag mouth 1 (as shown in Figure 5).

When inserting, the oblique edge (or tip) 40 at the bottom of the connection piece 3 can pierce the lamiante compound film at the bottom of the bag mouth 1 to realize interconnection between the inside space of the bag and the outer space. Pay attention to the correct inserting position of the connection piece and ensure the rotating arm 34 can completely fall into the arc-shaped grooves 1 1 in the upper surface of the bag mouth after inserting (as shown in Figure 5).

After full and correct inserting of the connection piece 3, rotate the connection piece 3 by 90 degrees through the rotating arm 34. At this moment, the slots 35 on the two sides of the rotating arm 34 contact firmly with the protruding outer edge of the upper part of the bag mouth 1 to form reliable mechanical connection between the connection piece and the bag mouth 1 (as shown in Figure 6).

Meanwhile, the protruding sealing ring 38 at the bottom of the connection piece can realize reliable sealing between the connection piece 3 and the holes in the bag mouth 1 to prevent leakage of the liquid in the bag through the gaps between the bag mouth 1 and the connection piece 3.

It should be noted that the upper connector 31 of the connection piece 3 should be connected with the liquid discharge tube of field preparation machine before performing aforesaid connection, and the aseptic bag should be upside down (the upper surface of the bag mouth kept downward) during the operation.

Thus, after connection of the bag mouth 1 with the connection piece 3, the liquid in the aseptic bag can flow into the discharge tube of the field preparation machine through the four discharge holes 38 arranged in different directions at the lower position of the connection piece. At this moment, the user may start up the field preparation machine to perform automatic liquid discharging.

This aseptic bag quick connection device 100 helps to realize automatic liquid discharge of aseptic bags connected with field preparation machine, which cannot be achieved using existing technology.

With this aseptic bag quick connection device 100, the application field of aseptic bags can be broadened.

The above description is related to an embodiment only.

It should be pointed out that common technicians in this technical field may make some minor improvement and change within the principle of this invention, and such improvement and change should also be deemed protected by this invention.