JPH07125799A - Method and device for pouring out liquid in bag-in-box - Google Patents

Abstract

PURPOSE:To accurately pour out the contents of a bag-in-box in a fixed amount without causing damage to the pouring part and facilite its maintenance and control. CONSTITUTION:In a bag-in-box having a bag body consisting of two bags, inner and outer, a pouring nozzle 17 in communication with the inside of the inner bag 2 thereof is partially provided with a pressure deforming part 18, the pressure deforming part 18 is provided with a pressing means 23 for applying pressure thereagainst and the liquid inside the bag is poured out in a fixed amount by pressing the pressure deforming part 18 by the pressing means 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pouring device for pouring a fixed amount of content liquid from a pouring outlet of a bag-in-box.

[0002]

2. Description of the Related Art Conventionally, for handling a liquid such as a syrup of a beverage raw material, a so-called bag-in-box in which a bag having an openable lid or a tube for pouring is contained in an outer box is called. A container is used.

The bag body of the bag-in-box is composed of an inner bag and an outer bag. The inner bag is pressurized by supplying a pressure fluid (compressed air) between the inner bag and the outer bag. The bag 1 has a structure for pouring out the liquid filled therein. Generally, the bag 1 is welded to each opening of the flat inner bag 2 and the outer bag 3 as shown in a partial cross section in FIG. A nozzle main body 4 which is tightly fixed by means of a hose connection portion 6 for allowing compressed air to flow into a space portion 5 between the inner and outer bags 2 and 3 on a side portion of the nozzle main body 4. A pressure fluid supply path 7 communicating with 5 is formed. A tube 8 is connected to the tip of the nozzle body 4 and is housed in an outer box 9 to form a bag-in-box 10 as shown in FIG. 5, so that the liquid in the inner bag 2 is poured out through the tube 8. Has been done.

When the bag-in-box 10 described above is set in a beverage supply facility, the tube 8 drawn out from the nozzle body 4 of the bag-in-box 10 is used to dispense the liquid in a fixed amount, as shown in FIG. 6 (A). A rotary plate 11 is provided on the side of the position where the tube 8 is fixed, and the tube 8 is fixed to the fixed wall 13 by a few pins 12 protruding from one surface of the rotary plate 11.
The discharge mechanism is designed to stop the outflow of the liquid by crushing the tube 8 by pressing the tube 8 or pressing bodies 14, 15 on both sides of the tube 8 as shown in FIG. 6B.
In general, a pouring mechanism in which one pressing body 14 is moved by a solenoid 16 or the like to press the tube 8 against the pressing body 15 on the other side so as to crush the tube 8 and stop the outflow. ing.

[0005]

However, in any of the above-mentioned pouring mechanisms, since the tube 8 is mechanically crushed to stop the outflow, the tube 8 is pushed during repeated crushing operations. The crushed portion locally deteriorates, causes damage to the tube 8, loses the restoring property from the crushed state, gradually changes the flow passage cross-sectional area, and changes the flow rate to impair the accuracy of quantitative dispensing. There was a problem that Further, since the tube 8 is crushed in the middle, a long tube 8 is required, and since the contact surface with air is large, daily cleaning and sanitation are indispensable, and a lot of labor is required in terms of maintenance management. there were.

[0006] In view of this, the present invention enables reliable quantitative dispensing without damaging the dispensing portion of the bag-in-box, and is particularly suitable for dispensing liquid in a bag-in-box, which is suitable for dispensing liquid with emphasis on sterility. It is an object to provide a method and an apparatus thereof.

[0007]

As a means for solving the problems of the above-mentioned conventional techniques, the present invention provides a bag-in-box having a bag body composed of inner and outer double bags.
It is characterized in that a pressurizing and deforming portion is connected to a part of a pouring nozzle that communicates with the inside of an inner bag of a bag-in-box, and the pressurizing and deforming portion is pressed by an external pressure so as to pour out a liquid in a fixed amount. A method and apparatus for pouring a liquid into a bag-in-box, wherein the apparatus is provided with a pressurizing means for pressurizing the pressurizing and deforming section, and the pressurizing and deforming section is pressed by this pressurizing section for pouring out. It was done.

[0008]

When the pressurizing and deforming portion of the pouring nozzle is pressurized by the pressurizing means, the liquid in the pressurizing and deforming portion is extruded and ejected from the tip of the pouring nozzle. In this case, by making the amount of deformation of the pressurizing and deforming part constant, it is possible to perform a constant amount of dispensing regardless of properties such as the viscosity of the liquid, and even if the viscosity changes with temperature changes, the amount of dispensing is affected. There is no.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings.

In the embodiment shown in FIG. 1, a bellows-like pressure deformable portion 18 is formed on a part of a spouting nozzle 17 made of a synthetic resin material having elasticity and which is connected to a spouting portion of a bag-in-box 10.
Is formed, and the spout 19 is opened at the lower end thereof.
In this embodiment, the check valve 2 which allows only the outflow from the bag-in-box side between the spout of the bag-in-box 10 and the pressurizing and deforming portion 18 and the upstream side of the spout 19.
0 and 21 are installed.

A portion having the pressure deforming portion 18 is housed in an airtight closed case 22, and a pressure device 23 is attached to the closed case 22.

The pressurizing device 23 shown in FIG. 1 has a piston 24 which is hermetically slid in the hermetically sealed case 22.
The rod 25 of the piston 24 is led out to the outside of the hermetically sealed case 22 in an airtight manner, and the crank rod 27 of the crank 26 is connected to the rod 25. The crank 26 is driven in a unit of one rotation by driving means such as a motor and a rotary solenoid.

Therefore, one revolution of the crank 26 causes the piston 24 to reciprocate once through the crank rod 27,
At the time of the forward movement, the internal pressure of the closed case 22 is increased, and the pressure deforms the compression deformable portion 18 so that the liquid inside the check valve 21
Through the outlet 19. When the piston 24 retracts, the pressure in the closed case 22 disappears, and the pressurizing and deforming portion 18 returns to its original shape. At that time, the check valve 20 opens and liquid from the bag-in-box 10 enters the pressurizing and deforming portion 18. It is filled and ready for the next pouring. In this case, the pressure deforming portion 18
Has a bellows structure, it deforms into a linear line when pressure is applied, and it is possible to dispense a fixed amount without uneven discharge.

FIG. 2 shows another embodiment of the pressurizing device 23. A pressurizing fluid pipe 28 is connected to the closed case 22, and the pipe 28 is branched into two passages 29 and 30 on the way. A switching valve 31 having a three-way cock structure is inserted in the branch portion, and the flow direction of the pipeline is switched by rotating the switching valve 31 by a predetermined angle by a driving means 32 such as a rotary solenoid. There is.

A pressurizing pump 33 is connected to the conduits 29 and 30, one conduit 29 being a discharge side and the other conduit 30 being a suction side. Incidentally, 34 and 35 are accumulators.

Therefore, the positive pressure is applied to the pipe 29 by driving the pressurizing pump 33, and by switching the switching valve 31 to bring the pipe 29 and the closed case 22 into communication with each other, the closed case 22 is closed. The pressure is introduced to increase the internal pressure, the pressurizing and deforming portion 18 is compressed, and the liquid therein is discharged from the spout 19.

When the switching valve 31 is switched after the fixed amount pouring, the conduit 30 on the shadow pressure side and the closed case 22 are communicated with each other,
The pressure inside the closed case 22 disappears, the pressure deforming portion 18 is returned to its original shape, and new liquid is sucked in to prepare for the next pouring.

In FIG. 3, a bellows-like pressurizing and deforming portion 18 is continuously provided on the side of the pouring nozzle 17, and a pressurizing device 23 such as a solenoid is joined to the outer end of the pressurizing and deforming portion 18. The pressurizing and deforming portion 18 is pressed by driving the pressurizing device 23, and the liquid is poured out.

In any of the above embodiments, a spring for returning may be provided when quickness at the time of restoration of the pressure deforming portion 18 is required.

[0020]

As described above, according to the present invention, a pressure-deformation portion is provided in the discharge nozzle of the spout of the bag-in-box, and the liquid inside is injected by compressing the pressure-deformation portion. Since it is set to be dispensed, a dispensed amount proportional to the deforming pressure (deformation amount) of the pressurizing and deforming portion can be obtained, and accurate quantitative dispensing can be performed, and moreover, like a beverage syrup whose viscosity easily changes due to temperature changes. Even if it is a liquid, stable quantitative dispensing can be performed without being affected by the viscosity. Furthermore, since the liquid does not come into contact with the outside, daily cleaning and sanitation are not required, maintenance is easy, and it is ideal for automatic beverage supply equipment.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of the present invention.

FIG. 2 is a schematic sectional view showing another embodiment of the present invention.

FIG. 3 is a schematic sectional view showing still another embodiment of the present invention.

FIG. 4 is a schematic sectional view showing an example of a bag body of a bag-in-box.

FIG. 5 is a perspective view showing an external appearance example of a bag-in-box.

6A and 6B are explanatory views showing a conventional pouring device.

[Explanation of symbols]

 1 bag 2 inner bag 3 outer bag 4 spout nozzle main body 6 hose connection part 8 tube 9 outer box 10 bag-in-box 17 spout nozzle 18 pressurizing deformation part 19 spout 20, 21 check valve 22 sealed case 23 addition Pressure device 24 Piston 26 Crank 28 Pressurized fluid conduit 31 Switching valve 33 Pressurized pump

Claims (6)

[Claims] 1. A bag-in-box having a bag body composed of inner and outer double bags, wherein a pressure-deformation portion is connected to a part of a pouring nozzle communicating with the inside of the inner bag of the bag-in-box, A method for pouring a liquid in a bag-in-box, characterized in that the pressurizing and deforming portion is pressed by an external pressure to pour out the liquid in a fixed amount. 2. A bag-in-box having a bag body consisting of inner and outer double bags, wherein a pressure-deformation portion is connected to a part of a pouring nozzle communicating with the inside of the inner bag of the bag-in-box, A bag-in-box, characterized in that a pressurizing means for pressurizing the pressurizing and deforming portion is attached to the pressurizing and deforming portion, and the liquid inside is quantitatively poured out by pressurizing the pressurizing and deforming portion. Liquid dispenser. 3. The bag according to claim 2, wherein a portion where the pressure deforming portion is present is housed in a closed case, and a pressurizing device for increasing the internal pressure of the closed case to press the pressure deforming portion is attached. In-box liquid dispenser. 4. The pressurizing device is composed of a piston member provided in the hermetically sealed case so as to be slidable in an airtight manner, and a crank mechanism connected to a rod of the piston member to reciprocate the piston member. 4. The bag-in-box liquid pouring device according to claim 3. 5. The pressurizing device comprises a pressurized fluid pipe connected to the closed case, a pressurizing pump connected to the pipe, and a flow of pressurized fluid connected to the pipe. The liquid pouring device for a bag-in-box according to claim 3, which is configured with a switching valve for switching directions. 6. The liquid pouring device for a bag-in-box according to claim 2, wherein the pressurizing and deforming portion is formed of a bellows.