JPH11197583A - Solvent treating hermetic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lessen solvent loss and to embody treatment which enables the protection of the ozone strate, etc., by providing the bottom of hermetic vessel with plural treating vessels communicating with inside of the hermetic vessel 1 through an opening, pulling the materials to be treated in the respective treating vessels from the treating vessels by rotatable and vertically freely movable hangers and subjecting these materials to the treatment one after another. SOLUTION: A gas holder 4 which sucks the gas in the hermetic vessel 1 and redischarges the gas is installed to the hermetic vessel 1 and the radially extending plural hangers 7 are mounted on the inside end of a rotatable and vertically freely movable drive shaft 6 in the hermetic vessel 1. The materials 7 to be treated are hung at the front ends of the respective hangers 7 and the drive shaft 6 is pulled up, by which the materials 7 to be treated are pulled up from the treating vessels 3 through the apertures disposed at shielding plates 2. At least one of inlet/outlet vessel 13 among the treating vessels 3 is provided with a shutter 11 capable of hermetically closing the apertures and the outside walls of the treating vessels 3 are provided with hermetically closable shutters 12 for putting in and out of the materials to be treated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing apparatus using a solvent.

[0002]

2. Description of the Related Art As a processing apparatus using a solvent, a processing apparatus having an opening in an open state for taking in and out an object to be processed is generally used in terms of work efficiency. Since the shape of the object to be processed is small or complicated, it is usual to put it in a basket or the like and perform the processing operation. It is difficult to avoid the loss of the solvent and the deterioration of the working environment due to the leakage from the processing apparatus or the entrainment with the object to be processed.

[0003] Because of this, leakage of the solvent is inevitable, and the types of solvents that can be used are limited due to the toxicity and flammability of the solvent. Recently, chlorinated hydrocarbons and chlorinated fluorinated carbon Hydrogen is used. However, these solvents are said to cause ozone depletion on the earth and cause global warming, and their use has been restricted, and reduction in loss and conversion to other solvents are required.

[0004] On the other hand, there has been proposed a processing apparatus in which an object to be processed is installed in one processing tank, and the object to be processed is removed in a sealed state after solvent treatment and solvent removal, but the operation efficiency is poor.
Further, using a plurality of the same devices is not economical and complicated. In addition, double doors may be provided at the entrance of the processing object into and out of the processing equipment, or the leaked part of the processing equipment may be covered to collect the leaking solvent and collected by the solvent recovery equipment. Suggestions and attempts have been made.

[0005] However, all of these methods have disadvantages such as insufficient prevention of solvent loss, complicated operation, economy, and a large floor area. In order to solve such a drawback, the present inventor processes an object to be processed in a sealed processing apparatus, and brings in air from the outside when the object to be processed enters and exits the sealed processing apparatus. It was proposed by Japanese Patent Application No. 9-14471 as a device that does not take out the gas inside.

[0006] Although most of the problems have been solved by this, when implementing this, it is necessary to move an object to be processed in a closed system. However, it is not preferable to provide a device for driving a workpiece using an electronic part such as a limit switch or a fine bearing with lubricating oil inside the interior filled with the processing agent gas, which causes a failure and is not preferable. When the entrance and exit of the entrance / exit are also used, the movement of the object to be processed becomes complicated and causes a failure.

[0007] Further, the processing time for the movement of the object to be processed must be performed within the processing time of each processing tank, which may be an obstacle in some cases. Further, in the case of a separate access unit for the entrance and the exit as disclosed in Japanese Patent Application No. 9-14471, there is a drawback that the gas discharge operation is doubled, which is not preferable in terms of loss of the processing agent.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned drawbacks, and is provided in a closed container having a gas holder for sucking gas in the closed container or re-discharging the gas. A drive shaft that can rotate and move up and down while maintaining a sealed state while one end penetrates outside the closed container, a drive device connected to one end of the drive shaft that penetrates outside the closed container, and A plurality of hanging objects for the object to be processed radially extending from the shaft are provided, so that the object to be processed can be hung at the distal end thereof, and the object to be processed which is hung with the drive shaft pulled up. A shielding plate is provided in a closed container of a portion below the lower bottom, an opening is provided in the shielding plate, and a plurality of processing tanks and an opening where an object to be processed enters are connected, and at least one processing tank has , A shutter that can be hermetically closed is provided in the opening, and the processing tank is hermetically sealed. To provide a solvent treatment sealing apparatus characterized in that a shutter for entry and exit of sealable object to be processed vessel outer wall. .

Hereinafter, the present invention will be described in detail with reference to the drawings. This is only an example of the embodiment, and other specific methods can be adopted. In FIG. 1, reference numeral 1 denotes an airtight container, which has a cylindrical portion and a shielding plate 2 on a disk, and has five openings through which an object to be described later can enter, and a rectangular tube communicating with the opening. Treatment tanks 3 each of which is formed in a shape of a closed container,
The closed container 1 is integrally formed. One of the five processing tanks has a shutter 11 that can be closed and opened and closed at the opening portion, and a sealable entrance / exit 12 for an object to be processed is provided on a side surface.

[0010] The capacity of the closed vessel 1 is changed so that the pressure does not substantially change in accordance with the amount of gas retained therein, so that gas is not discharged from the closed vessel 1 to the outside or air is introduced from the outside. The gas holder 4 is connected. A drive shaft 6 penetrates through a central portion of the cylindrical ceiling through a seal portion 5, and five hanging members 7 for the objects to be processed are attached from the drive shaft 6 in the closed container 1. The drive shaft 6 is rotated and moved up and down by a drive shaft operating device 8 outside the sealed container.

[0011] At the tip of the hanging member 7 for the object to be processed, objects to be processed 9 containing the objects to be processed are hung.
By lowering the height of the processing tank 3, the processing tank 3 is installed on each of the workpiece mounting tables 10 provided inside the five processing tanks 3. The hanging tool 7 for the object to be processed is designed so that the object to be processed 9 can be hooked by only moving the drive shaft 6 up and down and rotating.

[0012] For example, as shown in FIG.
The tip of the L-shape is set to an L-shape, the processing container 9 is set on the processing table 10, and the drive shaft 6 is lowered and rotated.
This is achieved by moving the L-shaped part under the hanging part of the workpiece holder 9 and then pulling up the drive shaft 6. Conversely, when the object container 9 is installed on the object mounting table 10, the above operation can be performed in the reverse order.

In the drawings, the hanging member 7 for the object to be processed is in the shape of a bar. However, the present invention is not limited to this. For example, it may be in the shape of a disk, and its surface may be flat or uneven. Further, the closed container is not necessarily cylindrical, and may be rectangular or polygonal. Furthermore, the shape of the container for the object to be processed may be an appropriate shape. At this time, if the shape can be accommodated, the shape of the processing tank of the rectangular cylindrical closed container may be an appropriate shape.

Next, an operation example using the apparatus according to the present invention will be described with reference to FIGS. In each of the processing tanks 3, five processing tanks are arranged at equal intervals on the circumference, and the processing container 9 is placed on each processing tank installation table 10 for processing. The processing tank is filled with a solvent such as chlorinated fluorinated hydrocarbon or chlorinated hydrocarbon, and one of the tanks is provided with the above-mentioned shutters on the upper part and the side part, respectively. The object to be processed is taken in and out from here (hereinafter, referred to as an in / out tank). Shutter 1 in entrance / exit tank 11
2 is closed, and a processing container 9 containing a new processing object is placed on the processing object setting table 10 in the processing tank.

An object to be processed is mounted on the drive shaft so that the object to be processed is placed at an appropriate position for lifting the object to be processed in the processing tank arranged on the circumference or installing the object in the processing tank.

First, when a new container 9 to be treated is charged into the closed container 1, the air in the inlet / outlet tank 13 that accompanies the container 9 is sucked using a vacuum pump (not shown) and discharged to the outside. Next, a gas deposited in the gas holder 4 (a gas deposited when an object to be processed is taken out of an inlet / outlet tank, which will be described later) is introduced into the inlet / outlet tank 13 in the closed container 1 to make the internal pressure and the uniform pressure of the closed container. Next, the shutter 11 is opened, the drive shaft 6 is lowered, and the respective workpiece holders 9 including the entrance / exit tank are hooked to the tip of the hanging tool 7 for each workpiece, and the drive shaft 6 is raised.

Next, the drive shaft 6 is rotated by one section of the processing tank 3, the drive shaft 6 is lowered, and the objects to be processed 9 are set on the mounting table 10 of each processing tank 3. As a result, the newly placed object container 9 enters the first treatment tank, the first tank to the second tank, the second tank to the third tank, the third tank to the fourth tank, and the fourth tank to the fourth tank. Move to the fifth tank and from the fifth tank to the access tank. The objects to be processed stored in the objects to be processed set in the second to fifth processing tanks are successively processed in the respective processing tanks.
In the loading / unloading tank 13, the processing container into which the processed object is placed moves from the fifth processing tank and is set on the installation table. Every time you open the shutter of the entrance and exit tank like this,
There is an advantage that a new object to be processed is loaded into the closed container and the processed object to be processed is taken out of the closed container into and out of the closed container. An operation is performed to remove the object without entrainment of the solvent gas.

First, the shutter 11 is closed, and then the access tank 1
The gas in 3 is sucked by a vacuum pump (not shown) and introduced into closed container 1. The gas introduced into the closed container 1 by the vacuum pump is deposited in the gas holder 4. This gas is a gas corresponding to the gas introduced into the inlet / outlet tank 13 when the object to be processed is charged into the closed container 1. Next, access tank 13
After the air is introduced into the inside and the inside of the inlet / outlet tank 13 is brought to the atmospheric pressure, the shutter 12 is opened, and the article to be treated 9 containing the article to be treated after the solvent treatment is taken out from the in / out vessel 13. Next, the processing object container 9 containing a new unprocessed object is placed in the access tank 1.
3 and close the shutter 12 to return to the beginning.

Next, a method for doubling the processing capacity will be described with reference to FIG. There are two entry / exit tanks (9A, 9
B) Yes, the object to be processed is put in and out alternately. The objects to be processed placed in the A-series entry / exit tanks are processed in the same order as the A-series second, third, fourth, and fifth entry / exit tanks as described above. Prevention of air intrusion into the closed system, prevention of outflow of the closed system gas out of the system, operation of the drive shaft, and the like are the same as described above. The same applies to the operation of the B series. When the processing conditions are the same, the second processing tank to the fifth processing tank preferably use the A series and the B series as one common tank because it is simple and preferable. The movement of the workpiece by the drive shaft is A series,
The B-series is performed alternately, and the object to be processed is doubled under the same processing time in the processing tank. Here, the description has been made with respect to two series, but three or more series can be used.

[0020]

According to the present invention, the use of the solvent treatment sealing device according to the present invention can spread a solvent treatment device having a small solvent loss and a small device failure, protecting the ozone layer, preventing global warming, preventing environmental pollution, and improving working conditions. Etc. can be contributed.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating one embodiment of the present invention.

FIG. 2 is an explanatory view of a processing object container and a processing object suspending tool tip portion illustrating an embodiment of the present invention.

FIG. 3 shows a processing tank arrangement in a case where the processing tanks according to an example of the present invention are arranged in one line.

FIG. 4 shows a processing tank arrangement in a case where the processing tanks according to an example of the present invention are of two lines.

[Explanation of symbols]

1 is a closed container 2 is a disk-shaped shielding plate 3 is a processing tank 4 is a gas holder 5 is a seal part 6 is a drive shaft 7 is a hanging tool 8 for a workpiece.
Is a drive shaft operating machine 9 is an object holder 9A is an A-series object holder 9B is a B-series object holder 10 is an object mounting table 11, a shutter 12, a shutter 13 is an access tank.

Claims (1)

[Claims] 1. A closed container having a gas holder for sucking a gas in the closed container or re-discharging the gas, one end of which penetrates the outside of the closed container while maintaining a sealed state while rotating and moving up and down. A drive shaft, a drive device connected to one end of the drive shaft that penetrates outside the closed container, and a plurality of objects to be hanged radially extending from the shaft in the closed container. An object to be processed can be hung at each of the distal ends, and a shield plate is provided in a closed container at a portion below a lower bottom of the object to be hung with the drive shaft being pulled up, and an opening is provided in the shield plate. A plurality of processing tanks into which an object to be processed enters and an opening, and at least one of the processing tanks is provided with a shutter that can be sealed at the opening, and the processing tank is sealed with an outer wall of a closed container of the processing tank. It is equipped with a shutter for entering and exiting the object to be processed. That solvent treatment sealers.