JPH0834412A - Rapid pressure reducing device - Google Patents

Abstract

PURPOSE:To provide a reservoir tank connected to a rotary pump serving as vacuum pump in a rapid pressure reducing device used in the vacuum packing of clothes or foods in order to rapidly change the atmospheric pressure, particularly inside a storing bag, to a pressure reduced condition, whereby the inner pressure of the storing bag can be fully reduced by the reservoir tank via an adapter. CONSTITUTION:An adapter 4 is inserted into the opening part of a storing bag to be reduced in pressure and a pressure reducing reservoir tank is connected to the storing bag through the hole 8a of the adapter 4. Both the side edges 4b of the adapter 4 are formed into an edge-like shape and the opening part of the storing bag in which the adapter 4 is inserted is held between a pair of upper and lower rubber members 6a and 6b, whereby the leakage upon reducing pressure can be fully prevented to permit the pressure inside the storing bag to be reduced rapidly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rapid decompression device used for vacuum packing of clothes and foods.

[0002]

2. Description of the Related Art Generally, when performing vacuum packing, clothes, foods, etc. are stored in a storage bag made of a plastic film such as polyethylene, the storage bag is put in a container with a closed lid, and the container is used as a rotary pump. Connect 0.1
The pressure is reduced to about atmospheric pressure. At that time, the mouth of the storage bag is left open, so that the inside of the storage bag is also in a reduced pressure state. Then, since the opening of the storage bag is closed by heat sealing inside the container, it means that clothes or foods are sealed in the storage bag in a reduced pressure state, and then air is put into the container. ,
The sealing lid is opened and the storage bag is taken out.

[0003]

By the way, in the conventional decompression means as described above, since the storage bag is put in the container with the closed lid and the inside of the container is decompressed, the decompression volume becomes large and the decompression operation is performed. Besides requiring a lot of time for
There is a problem in that the container needs to be made larger and larger because a heat seal or the like for sealing the storage bag is required in the container. The present invention provides a rapid decompression device, which improves the adapter to be inserted into the opening of the storage bag so that the inside of the storage bag can be directly decompressed, and can perform the decompression operation efficiently. With the goal.

[0004]

In order to achieve the above object, the rapid decompression device of the present invention comprises an adapter to be inserted into an opening of a storage bag and an opening of the storage bag into which the adapter is inserted. A pair of upper and lower rubber members that can be sandwiched, a drive mechanism that can adjust the mutual distance between these rubber members, and a through hole formed in the adapter for depressurizing the inside of the storage bag via the first valve. The adapter has a reservoir tank connected thereto and a rotary pump connected to the reservoir tank via a second valve, and a movable heat seal capable of heating and sealing the opening of the storage bag. Both side edges are formed in an edge shape so as to tightly clamp the opening edge wall of the storage bag in cooperation with the rubber member.

Further, the rapid depressurizing device of the present invention is characterized in that the rotary pump is connected to a through hole of the adapter through a third valve. Further, the rapid depressurization device of the present invention, after depressurizing the storage bag, to introduce an inert gas into the storage bag through the through hole of the adapter,
It is characterized in that an inert gas supply source is connected to the same hole through a fourth valve. Further, in the rapid depressurization device of the present invention, the rubber member has a suction port on the contact surface with the opening edge wall of the storage bag, and the reservoir tank is connected to the suction port via a fifth valve. Is characterized by.

[0006]

In the rapid depressurizing device of the present invention described above, first, the rotary pump is evacuated by the rotary pump. Then, the adapter is inserted into the opening of the storage bag, and the opening of the storage bag into which the adapter is inserted is tightly held by the pair of upper and lower rubber members.

By connecting the reservoir tank to the through hole of the adapter, the pressure inside the storage bag is reduced. At that time, the time when the valve is open is 1
It takes about 2 seconds, during which the rotary pump operates under a light load. In this way, if necessary, an inert gas (nitrogen gas or the like) is introduced into the depressurized storage bag. On the other hand, the operation of increasing the degree of vacuum of the reservoir tank is performed again by the rotary pump.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A rapid decompression device as one embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram showing its configuration, FIG. 2 is its piping system diagram, and FIG.
Is a perspective view showing the main part of the apparatus, and FIGS. 4 to 6 are explanatory views showing the operating state thereof.

As shown in FIG. 1, a storage bag 1 made of a plastic film to be depressurized is sequentially opposed to an adapter 4 of this apparatus via a conveyor 3 while containing a storage item 2 such as clothes and foods therein. It is supposed to be carried to the position where you want to. The adapter 4 has a running portion 4a, so that the adapter 4 can be inserted into the opening 1a of the storage bag 1.
The adapter 4 can be inserted and the adapter 4 can be pulled out from the opening 1a.

A movable heat seal 5 for closing the opening 1a of the storage bag 1 is provided between the conveyor 3 and the adapter 4, and the opening 1a of the storage bag 1 into which the adapter 4 is inserted is provided. A pair of upper and lower rubber members 6a and 6b that can be held and a hydraulic drive mechanism 7 that can adjust the mutual distance between the rubber members 6a and 6b are provided.
Both side edges 4b of the adapter 4 are formed in an edge shape so that the upper and lower rubber members 6a and 6b are tightly held. (See Figure 3)

As shown in FIG. 3, the adapter 4 is formed with a suction through hole 8a and an inert gas (nitrogen gas) introducing through hole 8b. The suction through hole 8a is shown in FIG. As shown, the reservoir tank 9 is connected via the first valve 11. A rotary pump 10 is connected to the reservoir tank 9 via a second valve 12,
10 can be communicated with the suction through hole 8a through the third valve 13.

Further, an inert gas supply source (cylinder) 16 is connected to the inert gas introducing hole 8b of the adapter 4 via a fourth valve 14. The through hole 8b may be omitted and the inert gas supply source 16 may be connected to the through hole 8a via the fourth valve 14.

As shown in FIG. 3, a pair of upper and lower rubber members 6
a and 6b are provided with a large number of suction ports 17 on the contact surface with the opening edge wall of the storage bag 1, and the suction ports 17 are provided with a flexible pipe 18 and a fifth valve 15 shown in FIG. The reservoir tank 9 is connected. Inside the casing 19 in FIG. 1, each member surrounded by a broken line 20 in FIG. 2 is housed.

Since the rapid decompression device of this embodiment is constructed as described above, first the first valve 11 and the third valve 11
13 and fifth valve 15 closed and second valve
After opening 12, the rotary pump 10 evacuates the reservoir tank 9 to perform a vacuum operation.

On the other hand, the opening 1a of the storage bag 1 is shown in FIGS.
When the fifth valve 15 shown in FIG. 2 is opened with the upper rubber member 6a being lowered and the opening edge wall of the opening 1a being sandwiched between the upper and lower rubber members 6a and 6b as shown in FIG. Since the opening edge wall of the storage bag 1 is adsorbed by the suction port 17 that has been made negative pressure by the tank 9, the opening of the storage bag 1 becomes wide open by raising the upper rubber member 6a next. . In this state, the operation of inserting the adapter 4 into the opening of the storage bag 1 by advancing the adapter 4 by the traveling portion 4a is performed.

Then, when the rubber member 6a is lowered again,
Since both side edges 4b of the adapter 4 are formed in an edge shape in the opening 1a of the storage bag 1, the rubber members 6a and 6b can be tightly held. (See FIG. 4) In such a state of being sandwiched by the rubber members 6a and 6b, as shown in FIG.
When the first valve 11 shown in is opened, the storage bag 1 is depressurized in a moment by the action of the vacuum reservoir tank 9. However, in order to increase the degree of vacuum, the first valve 11 and the second valve 11 are 12 is closed, the third valve 13 is opened, and the rotary pump 10 further inhales air from the inside of the storage bag 1.

After the inside of the storage bag 1 is sufficiently depressurized in this way, the opening of the storage bag 1 may be immediately closed using the heat seal 5 as shown in FIG. Before using, the fourth valve 14 shown in FIG. 2 may be opened to introduce an inert gas such as nitrogen gas from the inert gas supply source 16 into the storage bag 1. Note that FIG. 6 exemplifies a case where the storage bag 1 is hermetically sealed in a vacuum.

It is desirable that the volume of the reservoir tank 9 is sufficiently larger than the volume of the storage bag 1. For example, if the volume of the reservoir tank 9 is set to be 10 times the volume of the storage bag 1, the two will communicate with each other. Since the pressure in the storage bag 1 drops to about 0.1 atm (1/11 atm strictly) within 1 to 2 seconds, the pressure inside the storage bag 1 is directly reduced by using the adapter 4, and food and cleaning are performed. The subsequent operation of enclosing the clothes and the like in the storage bag 1 can be easily performed in a short time.

On the other hand, in the conventional decompression system without the reservoir tank 9, since the operation of decompressing the inside of the container 1 is performed only by the rotary pump 10, the working time becomes long and the working efficiency is lowered. Become. The reason for this is that the rotary pump 10 is generally inefficient and disadvantageous in bringing a container under atmospheric pressure into a vacuum state.

Since the rotary pump 10 does not have a sufficient pumping speed for a while after starting, rapid pumping is difficult,
In the rapid depressurization device of the present embodiment, the rotary pump 10 is always in the operating state, and the rotary pump 10 keeps the reservoir tank while the storage bag 1 is being conveyed and the opening 1a of the storage bag 1 is closed by the heat seal 5. Since the action of sucking air from 9 is performed, there is an advantage that the highly efficient vacuum packing work can be performed.

[0021]

As described above in detail, according to the rapid decompression device of the present invention, the following effects and advantages can be obtained. (1) By connecting the reservoir tank that is evacuated by the rotary pump to the storage bag to be depressurized by using the adapter with both edges formed in an edge shape, the storage bag can be depressurized quickly and accurately. Can be (2) Both side edges of the adapter are formed in an edge shape,
Since the storage bag opening into which the adapter is inserted is sandwiched between the pair of upper and lower rubber members, the reservoir bag and the inert gas supply source can be surely connected to the storage bag. (3) The rubber member has a suction port on the contact surface with the opening edge wall of the storage bag, and when the reservoir tank is connected to the suction port, the opening edge wall of the storage bag is attracted to the rubber member. The opening operation is performed efficiently, and the adapter can be easily inserted into the opening. (4) The inert gas can be introduced into the storage bag directly by using the above-mentioned adaptor, whereby the inert gas can be used without waste. (5) Since the rotary pump can be maintained in the continuous operation state, the work efficiency is improved as a whole.

[Brief description of drawings]

FIG. 1 is a schematic view showing a rapid decompression device as one embodiment of the present invention.

FIG. 2 is a piping system diagram of the apparatus of FIG.

FIG. 3 is a perspective view of a main part of the apparatus shown in FIG.

FIG. 4 is an explanatory view showing a working state of the apparatus of FIG.

5 is an explanatory view showing another operation state of the device of FIG. 1. FIG.

FIG. 6 is an explanatory view showing still another operation state of the apparatus of FIG.

[Explanation of symbols]

 1 Storage Bag 1a Opening 2 Stored Items 3 Conveyor 4 Adapter 4a Adapter Traveling Part 4b Edge-like Side Edge 5 Movable Heat Seal 6a, 6b Rubber Member 7 Hydraulic Drive 8a, 8b Through Hole 9 Reservoir Tank 10 Rotary Pump 11th 1st valve 12 2nd valve 13 3rd valve 14 4th valve 15 5th valve 16 Inert gas supply source (cylinder) 17 Suction port 18 Flexible piping 19 Casing

Claims (4)

[Claims] 1. An adapter to be inserted into an opening of a storage bag, a pair of upper and lower rubber members capable of holding the opening of the storage bag into which the adapter is inserted, and an interval between these rubber members is adjusted. Drive mechanism, a reservoir tank connected via a first valve to a through hole formed in the adapter to reduce the pressure inside the storage bag, and a reservoir tank connected to the reservoir tank via a second valve. And a movable heat seal capable of heating and sealing the opening of the storage bag, and both side edges of the adapter cooperate with the rubber member to open the opening edge wall of the storage bag. A rapid decompression device characterized by being formed in an edge shape so as to be tightly clamped. 2. The rapid depressurization device according to claim 1, wherein the rotary pump is connected to a through hole of the adapter through a third valve. 3. The rapid depressurization device according to claim 1, wherein after the storage bag is depressurized, a fourth gas is introduced into the storage bag so as to introduce an inert gas into the storage bag through the through hole of the adapter. A rapid decompression device, characterized in that an inert gas supply source is connected through a valve. 4. The rapid depressurization device according to claim 1, wherein the rubber member has a suction port on a contact surface with the opening edge wall of the storage bag, and the suction port has a fifth valve. A rapid depressurization device, characterized in that the reservoir tank is connected via a.