JPH08159392A - Refilling method to spray can, and device therefor - Google Patents

Abstract

PURPOSE: To provide an easy, quick and highly safe refilling method to a spray can having a plurality of injection ports (valves) allowing refilling, and a device therefor. CONSTITUTION: This device is formed of a spray can 1 having at least one or more injection ports allowing refilling and at least one or more nozzles, a filter vessel for filling up a filler, a propellant vessel 7 for filling up a propellant, and popes 3-6a for connecting them.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refilling method and apparatus capable of repeatedly refilling a refillable spray can with a filler and a propellant, and being simple, quick and highly safe.

[0002]

2. Description of the Related Art Since conventional spray cans are disposable, it is necessary to make a hole from the viewpoint of safety when incinerated after use, which is troublesome. Therefore, a simple perforator has been developed, but spray cans are thrown away as garbage, which poses a problem in terms of environmental protection. In addition, when the usage amount is large, a large amount of inventory is required, and purchase management / inventory management is also required, so that it is necessary to secure the inventory location. Further, since it is disposable, there is a problem in terms of resource saving. Therefore, it has been desired to develop a method for refilling a spray can and a device therefor. Currently, regarding these, JP-A-60-217970, "Discharge device for soluble substance, method for filling or refilling the substance, and apparatus for carrying out the method", JP-A-4-87969 "Valve device for sealed container and use thereof" There are published techniques for "filling the contents", but none of them relate to a spray can having a plurality of inlets and do not teach the present invention.

[0003]

DISCLOSURE OF THE INVENTION The present invention provides a refilling method and apparatus for a refillable spray can having a plurality of inlets (valves), which is simple, quick, and highly safe.

It is another object of the present invention to provide an automated device and method capable of safely and quickly refilling a safe spray can withstanding at least 8 atm.
The use of these methods also aims at environmental protection and resource saving.

[0005]

In order to achieve the above object, a spray can and a propellant container having a plurality of injection ports (valves), and a hose, a valve and a holder for guiding propellant and the like from these containers to the spray can. It is composed of ingredients. or,
To achieve the above object, the present invention provides a spray can having a plurality of inlets (valves) for refilling the filler and the propellant, a filler container and a propellant container, and propelling them from the spray can. It is composed of a hose, a valve, and a holder for guiding the agent and the like.

The spray can of the present invention comprises a container body (1d), a button (1a), a head having an ejection port (1b), a base (1c) for connecting it to the container body, and an injection port (1e). ing.

The spray can of the present invention has a structure that can withstand a pressure of 8 atm or more, and is highly safe. Therefore, the material is preferably metallic.

The injection port (1e) of the spray can of the present invention may be provided at any position on the main body of the can, and it may be provided at one or more positions.
It is preferable to install it in one place.

Further, the injection port (1b) of the spray can may be provided at any place on the main body of the can, and it may be provided at one or more places, but it is preferable to install one at the head for handling and structure. Further, the injection port and the ejection port may be valve devices which are usually used.

The spray can according to the present invention can be detached from the head by the mouthpiece (1c).
Powder, granular filler, etc. can be injected.

By fitting the spray can into the holding table (2) of the present invention, the injection port (1e) and the connection fitting (3) can be easily connected.

The connecting fitting (3) at one end of the device for guiding the filler or propellant of the present invention from the filling container to the spray can is properly connected to the inlet installed in the spray can, and the connecting fitting (6a) at the other end. Is connected to the filler container (7). On the other hand, a connecting container (6a, 6b, 6c) is used to fill a filling container (7, 8,
9) can be connected. A filler and the like can be introduced into the spray can by using a flexible hose and a metal pipe (4) between these connecting fittings. These flexible hoses can be replaced appropriately depending on the filler and propellant.
The material may be plastic, metal or the like.
Between the connection fittings, the branch point (5) and the connection fittings (6a, 6b,
It is used to control the introduction of propellant etc. by installing a valve between it and 6c). The valve may be for manual operation or may be automatically operable such as a solenoid valve. As the solenoid valve, a two-way solenoid valve is preferable. Further, the connecting fitting used in the present invention may be an ordinary connector.

The connecting fittings may be formed in different shapes in order to prevent mistaken insertion of the filler or the propellant.

The filler in the present invention includes chemicals such as bactericides and deodorants used in food factories, food service centers, etc.
Includes detergents and sizing agents used in laundry stores and cosmetics used in beauty salons.

In the present invention, as the propellant, a safe inert gas such as HFC134a gas, which is a substitute for CFC, or carbon dioxide gas or nitrogen gas existing in the atmosphere can be selected and used in consideration of environmental protection.

Further, a cleaning agent and a clean gas in fields requiring a high degree of cleanliness, such as precision machinery, electronic substrates, and silicon wafer manufacturing, are properly selected and can be selectively applied as fillers and propellants to this apparatus. it can.

The filling method in the present invention includes a method of filling only the propellant and a method of filling the filling agent and the propellant. The former is a method in which a propellant container is directly connected to a spray can, residual gas is exhausted by residual pressure, and then propellant is filled. The latter includes a method of separately filling a filler and a propellant and a method of previously mixing and filling in one container. As a method of individually injecting, the residual gas etc. is evacuated from the spray can by a vacuum pump in advance, the pressure is made negative, and then the filler is sucked,
Then, a method of filling the propellant, a method of installing a pump between the valve (10c) and the connection fitting (6c), injecting the filler with the pump, and then filling the propellant, and a spray can It is possible to adopt a method in which the mouthpiece (1c) is removed, a filler is injected from the opening, the mouthpiece is closed after the injection, and then the propellant is filled. Further, in the latter case, it is possible to employ a method in which a filler and a propellant are mixed in advance and put in one container, and then the spray can is preliminarily made to have a negative pressure by a vacuum pump and then filled. In these cases, the vacuum pump may be between the branch point (5) and the connecting fitting (3), or on the opposite side.

Further, a load cell is installed on the holding table (2) of the spray can or the propellant container table (14, 15) and the like, and when the set weight instruction value is reached, the solenoid valve (11a, 11a, It is possible to adopt a filling method in which an opening / closing instruction is sent to 11b, 11c) to automatically control the filling amount and the filling pressure can be controlled by a pressure switch.

[0019]

By using the above method, the refilling operation can be performed easily, quickly and safely.

[0020]

Embodiment 1 In Embodiment 1, a method of filling a spray can for cleaning an electronic substrate will be described with reference to FIG. To fill
The holder (2) and the HFC134a gas-filled propellant container (20L) (7) are connected via fittings (3, 6a),
Solenoid valve (connection shape NPT3 / 8 minimum operating pressure difference 0 f /
c G), pressure switch (connection shape NPT3 / 8, adjustment range -50 Hg to 6 f / c G8 to 30 f / c)
G 2 contacts), pressure gauge (φ60 connection shape R1 / 4 pressure range 0 to 10 f / c ■ G), safety valve (diameter φ8 connection shape PF3 / 8 (primary side) PT3 / 8 (secondary side) setting Pressure 9
■ Flexible hose with f / c ■ G (caliber 8A)
Design pressure 10 f / c G) and metal piping (C1220)
T-1 / 2H 8A × t0.76 Design pressure 9 f / c
G) are connected. Next, a metallic spray can (Spraytech, Germany, capacity 600 ml, external dimensions φ6
By inserting 4 × 216 (3) into the holder (2), the spray can is fixed, and the injection port at the bottom of the spray can is connected to the connecting device (3). The solenoid valve (11c) opens,
Residual gas is exhausted by residual pressure while the other solenoid valves (11a, 11b) are closed. When the pressure becomes 0 or less, the solenoid valve (11c) is closed, the solenoid valves (11a, 11b) are opened, and the propellant container Load cell installed below (rated capacity 10
The weight reduction of the propellant container is measured by 0 kgf minimum scale 0.1 kg accuracy 0.1% FS 1 contact, and the gas is automatically injected until the preset value is reached, and the solenoid valve (11a, 11b) Is closed and the filling work is completed. Therefore, by repeating this operation, refilling can be performed an infinite number of times.

In a second embodiment, a method for filling a cleaner for OA equipment will be described with reference to FIG. For filling, by inserting the spray can into the holding jig (2) to which the connection fitting (3) is connected, the injection port at the bottom of the spray can and the connection device (3) are connected, and via a flexible hose, Propellant container (7) filled with HFC134a gas by connecting metal fittings (6a, 6b, 6c), vacuum pump (8) and DME
It is connected to a filler container (9) filled with (dimethyl ether). First, the valve (10b) is opened, the residual gas is discarded by a vacuum pump, the valve (10b) is closed, the valve (10c) is opened, and DME is sucked and injected. After that, the valve (10c) is closed, the valve (10a) is opened, and the pressure gauge (12) is used for HF.
The filling operation is completed by injecting C134a gas at a constant pressure and closing the valve.

A third embodiment will be described with reference to FIG. 3 for an automatic refilling device using a load cell / pressure switch. When the spray can is inserted into the holding jig (2) in which the load cell (16) is installed, the solenoid valve (11e) is actuated, the pressure inside the spray can is reduced to a set pressure, and then the electromagnetic force is applied until the set weight instruction value is reached. The filler is injected by opening and closing the valve (11f), and then the solenoid valve (11f) is reached up to the value indicated by the pressure sensor.
Propellant is automatically filled by opening / closing d).

The fourth embodiment will be described with reference to FIG. 4, which is the simplest automatic refilling apparatus only for filling the propellant. When the spray can is inserted into the holding jig, the solenoid valve opens and the pressure switch injects the propellant up to the set pressure to close the solenoid valve. Although not shown in FIGS. 2, 3 and 4, the safety valve is naturally installed in one or more places in the device to give consideration to double safety.

[0024]

The following effects can be obtained by using the above refilling method. 1. The safety is high because the pressure resistance of the spray can is increased,
The ejection ability can be improved. 2. The spray main body and the head can be easily separated by the mouthpiece, so that the filler can be easily injected through the opening of the spray can. 3. Since the injection port is at the bottom, it can be easily connected to the filling device only by inserting it into the holding jig, and the handling property is improved. 4. By selecting compressed gas from the atmosphere, safety is improved for both human body and environment. 5. Since the filling amount and filling pressure can be controlled by the automatic filling device, refilling of the filling agent and the propellant can be performed easily and safely. Moreover, since the modified filler and propellant remaining by the vacuum pump can be removed before filling, safety can be improved. As described above, the refilling work can be performed easily and quickly and safely.
Therefore, there is no need to dispose of them, there is no need for large purchases, large stocks, and inventory management of spray cans, and the use of these methods is a solution to environmental conservation and resource saving.

[Brief description of drawings]

FIG. 1 shows a schematic diagram of a first embodiment of the present invention.

FIG. 2 shows a schematic diagram of Example 2 of the present invention.

FIG. 3 shows a schematic diagram of Example 3 of the present invention.

FIG. 4 shows a schematic diagram of Example 4 of the present invention.

[Explanation of symbols]

1 spray can 1a button 1b spout 1c mouthpiece 1d body 1e injection port 2 holding jigs 3, 6a, 6b, 6c connection fitting 4 flexible hose 5 branch point 7 propellant container 7a propellant 8 vacuum pump 9 filler container 9a filler 10a, 10b, 10c Valves 11a, 11b, 11c, 11d, 11e, 11f
Solenoid valve 12 Pressure gauge 13 Pressure switch 14, 15 Load cell 16, Safety valve

Claims (10)

[Claims] 1. A spray can (1) having at least one or more refillable inlets and at least one or more spouts, a propellant container (7) and a pipe (3) connecting them.
A device consisting of ~ 6a). 2. A spray can (1) having at least one refillable inlet and at least one jet outlet, a filler container (9) for filling the filler, and a propellant-filled propellant. Agent container (7) and pipe (3) connecting them
~ 6a, 6b, 6c). 3. The apparatus according to claim 1, wherein the refillable spray can has a pressure resistance of (8 atm) or higher. 4. A device according to claim 1, wherein the spray body and the heads (1a, 1b) can be separated from each other. 5. The device according to claim 1, wherein the inlet (1e) is located at the bottom. 6. A device according to claim 1, wherein alternative CFC gas is used as propellant (7a). 7. A device according to claim 1, wherein a compressed gas or compressed air selected from atmospheric gases is used as the propellant. 8. A device according to claim 2, wherein the filler (9a) is a filler selected from chemicals, detergents and cosmetics. 9. The filling method according to claim 1, wherein when the spray can is filled with the filler or propellant, the filler or propellant remaining in the spray can is once removed. 10. The apparatus according to claim 1 or 2, wherein a weighing instrument is installed, and when a set weight instruction value is reached, an opening / closing instruction is automatically sent to a valve (11a, 11b, 11c) installed in the filling circuit. A filling method capable of controlling the filling amount.