JPH08192385A - Glove box - Google Patents

Abstract

PURPOSE: To provide a glove box, which can securely prevent the intrusion of the atmospheric air into a main body box. CONSTITUTION: This glove box is provided with a moisture sensor 17 for detecting quantity of moisture of an inner space 4 of a spare box 3 and an inside hatch closing means 30 for holding an inside hatch 6 in the closed condition when the moisture at the predetermined quantity or more is detected by the moisture sensor 17. When the air is left in the spare box 3, the moisture sensor 17 detect it, and the inside hatch 6 is held at the closing position by the inside hatch closing means 30, and the diffusion of oxygen and steam among the air from the spare box 3 to the main body box 2 is thereby prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glove box, and more particularly to a glove box capable of reliably preventing air from entering the main body box.

[0002]

2. Description of the Related Art A glove box is a dry or inert atmosphere for solids, powders, radioactive materials, extremely toxic materials, and materials that explode in reaction with oxygen in the air, which are unstable in the atmosphere. Used for handling work, vacuum sweeps the inside of the body box that divides the work space from the outside in an airtight manner, then dry air or nitrogen, argon,
A dry atmosphere or an inert atmosphere is formed in the main body box by filling it with an inert gas such as helium.

Further, an opening is provided on the front surface of the main body box so that a person can put his / her hand into the main body box for working in the main body box, and gloves are attached so as to seal the opening. .

The method of using the glove box used to be
Insert the bag and container together with the bag and container into the body box, which is dangerous to put in a dry or inert atmosphere sealed by a bag or container. After making the atmosphere
Put your hands in the main body box through gloves, open the bag, container, etc., and perform the necessary work.After processing, seal the processed product again in a dry or inert atmosphere with the bag, container, etc. of the processed product. The method of taking out from the main body box was adopted.

However, in this method, it takes a lot of time to dry or inactivate the atmosphere in the main body box after putting the processed substances in the main body box, and a large amount of the processed substances are continuously processed. In this case, there is a problem of low productivity.

Therefore, today, a main body box for partitioning the work space from the outside thereof in an airtight manner, a cylindrical spare box having one end communicating with the main body box and the other end communicating with the atmosphere, and this spare box A glove box including an inner hatch that opens and closes an inner opening that allows the inner space of the box to communicate with the main body box side and an outer hatch that opens and closes an outer opening that allows the inner space of the spare box to communicate with the atmosphere is used. There is.

When this glove box is used, the atmosphere inside the main body box is kept dry or inert,
With the inner opening of the spare box with a smaller volume than this closed with an inner hatch, put the processed material sealed in a dry atmosphere or an inert atmosphere by a bag or container in the spare box, and then open the outer opening to the outside. After closing with a hatch, after drying or inerting the atmosphere in the spare box, open the inner hatch and transfer the processed product sealed in a dry atmosphere or inert atmosphere by a bag, container, etc. into the main box, and After that, the inner hatch is closed again if necessary, and the processed product is taken out from the bag, the container or the like in the main body box and processed. After processing, the processed product is sealed in a dry atmosphere or an inert atmosphere with a bag, container, etc. in the main body box, then the inner hatch is opened if necessary, it is moved to the spare box, and then the inner hatch is closed. Then open the outer hatch and take out the bag or container from the spare box.

[0008]

By the way, when the inner hatch is opened while air remains in the atmosphere in the spare box of the glove box having the spare box, oxygen and water vapor in the air are stored in the main body box. May be diffused and the dry atmosphere or inert atmosphere in the main body box may be destroyed.In order to return the destroyed atmosphere in the main body box to the original dry atmosphere or inert atmosphere, close the outer hatch and then It is necessary to open the inner hatch and take a longer time than before to fill the vacuum sweep and dry air or inert gas in the main body box and the spare box, which causes a problem that the productivity is rather lowered.

In particular, when a substance that explodes or ignites when it reacts with oxygen in the air is handled in a glove box having a spare box, the substance remaining in the main body box is reserved. There is a problem that it may come into contact with oxygen diffused from the box and cause an explosion or fire.

In view of the above situation, the present invention prevents the inside hatch from being opened when air remains in the atmosphere in the spare box so that oxygen and water vapor in the air are mixed in the main body box. It is an object of the present invention to provide a glove box capable of reliably preventing the above.

[0011]

SUMMARY OF THE INVENTION According to the present invention, a main body box for partitioning a work space from the outside thereof in an airtight manner, and a cylindrical spare having one end communicated with the main body box and the other end communicated with the atmosphere. A glove including a box, an inner hatch that opens and closes an inner opening that allows the interior space of the spare box to communicate with the main body box, and an outer hatch that opens and closes an outer opening that allows the interior space of the spare box to communicate with the atmosphere. In the box, the following measures are taken to achieve the above purpose.

That is, according to the present invention, a moisture sensor for detecting the amount of moisture in the internal space of the spare box, and an inner hatch closing means for holding the inner hatch in a closed state when the moisture sensor detects moisture of a predetermined value or more. It is a glove box characterized by having and.

The inner hatch closing means in the present invention may be constructed so as to hold the inner hatch in a closed state when the moisture sensor detects moisture of a predetermined value or more. A slide that moves in the direction orthogonal to the axial direction of the box, a gas cylinder that supports the inner hatch so that it can move back and forth in the axial direction of the spare box, and a dry gas or an inert gas is supplied to this gas cylinder. A gas supply path, an electromagnetic valve for opening and closing the gas supply path, and a gas supply path communicated with the electromagnetic valve when the water content sensor detects water having a predetermined value or more,
It may be configured with a control circuit that shuts off the gas supply path with an electromagnetic valve when the moisture sensor does not detect moisture above a predetermined value.

Further, the inner hatch closing means includes a vacuum suction port opened toward the inner hatch around the inner opening, a vacuum circuit for communicating the vacuum suction port with a vacuum source, and the vacuum circuit. Control to open and close the solenoid valve and the vacuum circuit with the solenoid valve when the moisture sensor detects moisture above a predetermined value, and to shut off the vacuum circuit with the solenoid valve when the moisture sensor does not detect moisture above the predetermined value It may be configured with a circuit.

Further, the inner hatch closing means operates an electromagnet that attracts the inner hatch to a closed position, and activates the electromagnet when the moisture sensor detects a moisture content above a predetermined value, and the moisture sensor above a predetermined value. It may be configured with a control circuit that releases the operation when the water content is not detected.

Further, according to the present invention, an oxygen sensor for detecting oxygen in the inner space of the spare box and an inner hatch closing means for holding the inner hatch in a closed state when the oxygen sensor detects oxygen are provided. It is a glove box characterized by.

The inner hatch closing means in the present invention may be constructed so as to hold the inner hatch in a closed state when the oxygen sensor detects oxygen in the spare box. For example, a spare box is provided on the main box side of the spare box. A slide that moves in the direction orthogonal to the axial direction of the box, a gas cylinder that supports the inner hatch so that it can move back and forth in the axial direction of the spare box, and a dry gas or an inert gas is supplied to this gas cylinder. A gas supply path, a solenoid valve for opening and closing the gas supply path, and a solenoid valve for communicating the gas supply path when the oxygen sensor detects oxygen, and a solenoid valve for supplying the gas supply path when the oxygen sensor does not detect oxygen. It may be configured with a control circuit that shuts off.

Further, the inner hatch closing means includes a vacuum suction port opened toward the inner hatch around the inner opening, a vacuum circuit for communicating the vacuum suction port with a vacuum source, and this vacuum circuit. A solenoid valve that opens and closes and a control circuit that connects the vacuum circuit with the solenoid valve when the oxygen sensor detects oxygen and that shuts off the vacuum circuit with the solenoid valve when the oxygen sensor does not detect oxygen may be used. .

Further, the inner hatch closing means operates an electromagnet for adsorbing the inner hatch to a closed position, and activates the electromagnet when the oxygen sensor detects oxygen, and deactivates when the oxygen sensor does not detect oxygen. And a control circuit for

[0020]

According to the present invention, when air remains in the spare box, the moisture sensor detects it, and the inner hatch closing means holds the inner hatch in the closed position. There is no risk of oxygen and water vapor diffusing into the body box.

Further, according to the present invention, when oxygen remains in the spare box, the oxygen sensor detects it.
Since the inner hatch closing means holds the inner hatch in the closed position, there is no risk of oxygen in the spare box diffusing into the main box.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A glove box according to an embodiment of the present invention will be described in detail with reference to the drawings.

As shown in the front view of FIG. 1, a glove box 1 according to an embodiment of the present invention has a main body box 2 for partitioning a work space from the outside thereof in an airtight manner, and one end of the main body box 2 communicating with the main body box 2. And a tubular spare box 3 having the other end communicated with the atmosphere, an inner hatch 6 for opening and closing an inner opening 5 for communicating the internal space 4 of the spare box 2 with the main body box 2, and the spare box. An outer hatch 8 that opens and closes an outer opening 7 that allows the inner space 4 of 3 to communicate with the atmosphere.
With.

The upper part of the front surface of the main body box 2 is covered with a window glass 9 which is inclined obliquely upward, and the lower part is formed with a pair of openings 10 for putting a person's hand inside the main body box 2. The opening 10 is covered with gloves in an airtight manner, and is further closed with a removable lid 11 for blocking the inside and outside of the main body box 2 when not in use.

A vacuum pipe 12 for communicating the inside of the main body box 2 with the suction port of a vacuum pump (not shown) is provided below the main body box 2, and an atmospheric gas such as dry air or an inert gas is supplied into the main body box 2. And a gas supply pipe 13 for communicating with each other.
4A are communicated with each other, and an oxygen meter or a moisture sensor (dew point meter) is branched and connected to the purge pipe 14A through a branch pipe 15 so that the atmosphere in the main body box 2 can be confirmed.

That is, when an oxygen meter is used, the amount of oxygen inside the main body box 2 is measured to confirm whether the atmosphere inside the main body box 2 has been replaced with an atmospheric gas such as an inert gas.

Further, normal atmospheric air contains a large amount of water vapor. On the other hand, atmospheric gas such as dry air and inert gas does not contain water vapor. Therefore,
When the air in the atmosphere in the body box 2 is exhausted and the atmosphere in the body box 2 is replaced with the atmospheric gas, the amount of water in the body box 2 is significantly reduced. Body box 2 with moisture sensor
By detecting the amount of water inside, it is possible to confirm whether or not the atmosphere inside the main body box 2 is replaced with the atmospheric gas. For example, when the water content is 1000 PPM or less, it can be determined that the atmosphere gas is normally substituted. When a more strict replacement state with the atmospheric gas is required, it may be judged that the replacement is completed when the water content becomes 100 PPM or less. A dew point meter can be used as the moisture sensor.

The spare box 3 is not particularly limited, but is arranged on the horizontal axis in order to enhance workability of the work for putting the processed product in and out of the main body box 2 through the spare box 3, one end of which is the main body. For example, the right side wall 16 of the box 2
It is fixed airtightly to.

Further, one end of the spare box 3 is projected into the main body box 2, one end surface of which is completely opened to form an inner opening 5, and the other end surface of which is completely opened. The outer opening 7 is formed. An air purge pipe 14B for air purging of the spare box 3 and an argon gas supply pipe 14C are provided above the spare box 3.
And a moisture sensor 17 configured by a dew point meter that detects the amount of moisture in the internal space 4 are connected.

As shown in the side view of FIG. 2, the inner hatch 6
Is supported by a plate-shaped slider 19 that slides in the left-right direction by a pair of left and right slide rails 18 via a support means 20 so as to be movable back and forth in the axial direction of the auxiliary box 3.

As shown in the sectional view of FIG. 3, the supporting means includes a boss 21 fixed to the slider 19 and the boss 2.
1, a screw seat 22 fitted in the spline so as to be slidable in the axial direction of the spare box 3, a spring 23 for urging the screw seat 22 toward the main body box 2, and a main body box 2 side of the screw seat 22. Of the screw seat 22 disposed in the main body box 2 and the screw shaft 25 that moves back and forth within the predetermined range in the axial direction of the auxiliary box 3 with respect to the screw seat 22. In addition to receiving the end surface on the box 2 side, the tip of the screw shaft 25 projecting from the holding lid 24 into the main body box 2 is provided with a handle 26 slidably fitted in the axial direction of the auxiliary box 3. There is.

A male screw 27 is formed on the portion of the screw shaft 25 on the side of the auxiliary box 3, and the tip of the screw shaft 25 on the side of the auxiliary box 3 is rotatably connected to the approximate center of the inner hatch 6. As a result, when the handle 26 is pushed against the spring 23 toward the auxiliary box 3 by a certain amount and rotated, the female screw 28 formed on the inner periphery of the screw seat 22 is formed.
The female screw 28 is tightened, and the inner hatch 6 is driven toward the slider 19. When the handle 26 is released with the female screw 27 and the female screw 28 opened, the spring 23 moves the screw seat 22 and the handle 26 to the main body box 2 side, and the screw shaft 25 and the inner hatch 6 are released. It becomes possible to freely come into contact with and separate from the inner opening 5 within a predetermined range.

As shown in FIG. 2, in this glove box 1, a moisture sensor 17 for detecting the amount of moisture in the spare box 3 detects moisture of a predetermined value or more.
Inner hatch closure means 30 is provided for holding the inner hatch closed when detecting moisture above 0 PPM, preferably above 100 PPM.

The inner hatch closing means 30 may be constituted so as to hold the inner hatch 6 in the closed state when the moisture sensor 17 detects the moisture in the spare box 3 at a predetermined value or more. An argon gas cylinder 31 supported by the slide 19 and supporting the inner hatch 6 so as to be able to advance and retreat in the axial direction of the auxiliary box 3, and an argon gas supply path 33 for supplying the argon gas cylinder 21 with argon from an argon gas container 32. , A double solenoid valve 34 for opening and closing the argon gas supply passage 33, and a double solenoid valve 34 when the moisture sensor 17 detects moisture of a predetermined value or more.
To connect the argon gas supply path 32 with each other, and when the moisture sensor 17 does not detect moisture above a predetermined value, the double solenoid valve 3
4, a control circuit 35 for shutting off the argon gas supply passage 32 is provided.

The above-mentioned argon gas cylinders 31 are provided in a plurality of two or more, and as shown in FIG.
Body 36 fixed to the side surface of the main body box 2 of
6 is capable of advancing and retracting into a cylinder chamber 37 formed in 6, and
A piston 38 fitted in an airtight manner and a piston rod 39 penetrating the end wall of the piston 38 and the tubular body 36 on the side of the auxiliary box 3 are provided. The inner hatch 6 is provided at the end of the piston rod 39 on the auxiliary box 3 side. Be connected.

A connecting portion for connecting the argon gas supply passage 33 to a pressure receiving chamber 40 defined in the cylinder chamber 37 on the body box 2 side of the piston 38 is provided at an end portion of the cylinder base 36 on the body box 2 side. 41 is provided.

Further, a joint 42 is fixed to an end wall of the tubular body 36 on the main body box 2 side, and an end portion of the piston rod 39 on the main body box 2 side is slidable in a gas passage 43 in the joint 42. And it is fitted in an airtight manner. Further, by making the piston rod 39 hollow, the joint 4
The second gas passage 43 is communicated with the internal space 4 of the spare box 3, and the argon gas container 32 is connected to this joint 42 via another argon gas supply passage 44 and the double solenoid valve 34 as shown in FIG. By connecting, when the moisture sensor 17 detects moisture above a predetermined value, the argon gas supply passage 44 is communicated with the two solenoid valves 34 to supply the argon gas to the internal space 4 of the spare box 3, When the moisture sensor 17 does not detect moisture above a predetermined value, the double solenoid valve 34 shuts off the argon gas supply passage 44 to stop the supply of the argon gas to the internal space 4.

As shown in FIG. 4, a return spring 45 for urging the piston 38 and the piston rod 39 toward the pressure receiving chamber 40 is provided in the cylinder chamber 37.

Further, as shown in FIG. 2 or 4, an elastic member such as rubber is formed around the inner opening 5 so that the auxiliary box 3 and the inner hatch 6 can be closed in an airtight manner. The seal 29 consisting of is fixed.

In the above configuration, with the inner hatch 6 facing the inner opening 5, for example, the outer hatch 8 is opened or incompletely closed, or after the outer hatch 8 is closed, the inside is closed. When the air purging of the space 4 is incomplete, air is present in the inner space 4, the moisture sensor 17 detects the water vapor contained in the air, and the water content shows a value equal to or larger than a predetermined value. That is, as described above, normal atmospheric air contains a large amount of water vapor, and atmospheric gases such as dry air and an inert gas do not contain water vapor. Therefore, as the air in the internal space 4 decreases, the water content decreases significantly. Therefore, when the moisture sensor 17 detects a predetermined value of moisture, for example, 1000 PPM or more, for example, the outer hatch 8 is opened or incompletely closed, or after the outer hatch 8 is closed, the inner space 4 of the inner space 4 is closed. Since the air purge may be incomplete, the control circuit 35 switches the two solenoid valves 34 based on the detection result, and the pressure is applied to the pressure receiving chamber 40 of the argon gas cylinder 31 via the argon gas supply passage 33. Argon gas is supplied to extend the argon gas cylinder 31, and thereby the inner hatch 6 is brought into close contact with the inner opening 5 to securely close the inner hatch 6.

At the same time, the argon gas supply path 4
4, argon gas is supplied to the internal space 4 of the auxiliary box 3 through the gas passage 43 of the joint 42 and the hollow portion of the piston rod 39.

When the air in the internal space 4 is exhausted,
The water content of the moisture sensor 17 becomes less than a predetermined value, and the control circuit 35 switches the two solenoid valves 34 to stop the supply of the argon gas to the internal space 4 and supply the argon gas to the argon gas cylinder 31. When stopped, the argon gas cylinder 31 is shortened and the inner hatch 6 is opened.

Therefore, as long as there is air in the internal space 4, the inner hatch 6 will not be opened, so that the diffusion of oxygen and water vapor in the air from the spare box 3 to the main body box 2 is surely prevented, and the main body is surely prevented. When the oxygen remaining in the box 2 is brought into contact with the oxygen, it is possible to surely prevent the contact between the substance and the oxygen that ignites or explodes.

Further, since the inner hatch can be opened at the same time when the air purging in the spare box 3 is completely completed, it is possible to move from the insertion of the processed product into the spare box to the main body box of the processed product. It is possible to shorten the time until it is performed.

Further, in this embodiment, since the inner hatch 6 is supported by the slider 19 which slides in the direction orthogonal to the axis of the auxiliary box 3 so as to be able to move forward and backward in the axial direction of the auxiliary box 3, the inner hatch 6 is moved. Since the space inside the body box 2 is not sacrificed for opening and closing 6, the work space inside the body box 2 can be widely utilized.

In another embodiment of the present invention shown in FIG. 5, the inner opening 5 is continuously formed around the entire circumference, or alternatively,
Vacuum suction port 5 that intermittently opens toward the inner hatch 6
1, a vacuum circuit 53 that connects the vacuum suction port 51 to a vacuum source 52 composed of a vacuum pump, an electromagnetic valve 54 that opens and closes the vacuum circuit 53, and when the moisture sensor 17 detects moisture of a predetermined value or more. There is provided an inner hatch closing means 50 including a control circuit 55 which connects the vacuum circuit 53 with an electromagnetic valve 54 and shuts off when the moisture sensor 17 does not detect a predetermined value of moisture.

This embodiment has an advantage that the argon gas does not flow out from the spare box 3 when the outer hatch 8 is opened or incompletely closed, and the consumption of the argon gas can be reduced.

Further, it is only necessary to add the vacuum suction port 51, the vacuum circuit 53 with the electromagnetic valve 54 interposed, and the control circuit 55 to the conventional glove box, which can be implemented easily and inexpensively. The present embodiment can be implemented by easily and inexpensively modifying an existing glove box.

Since the other constructions, functions and effects of this embodiment are the same as those of the above-mentioned one embodiment, their description will be omitted to avoid duplication.

In another embodiment of the present invention shown in FIG. 6, an electromagnet 61 for adsorbing the inner hatch 6 in the closed position, and the electromagnet 61 is operated when the moisture sensor 17 detects a predetermined amount of moisture, An inner hatch closing means 60 is provided which comprises a control circuit 62 which is deactivated when the moisture sensor 17 does not detect a predetermined amount of moisture.

In this embodiment, there is an advantage that the argon gas does not flow out from the spare box 3 when the outer hatch 8 is opened or incompletely closed, and the consumption of the argon gas can be reduced.

In addition, the electromagnet 6 is added to the conventional glove box.
Since it suffices to add 1 and the control circuit 62, it can be implemented more easily and cheaply, and the existing glove box can be modified more easily and cheaper to implement this embodiment. .

Since the other construction, operation and effect of this embodiment are the same as those of the above-mentioned one embodiment, their description will be omitted to avoid duplication.

In each of the above-mentioned embodiments, the inner hatch 6 is supported by the slider 19 which moves in the direction orthogonal to the axial direction of the auxiliary box 3 so as to be movable back and forth in the axial direction of the auxiliary box 3. The example can also be applied to a glove box of a type in which the inner hatch 6 is opened and closed by rotating around a support shaft set at one side or one side thereof.

In each of the above-described embodiments, the presence of air in the internal space 4 is detected by using the moisture sensor 17. However, in the case where the object to be treated reacts with oxygen and explodes, it is more reliable. In order to detect oxygen, an oxygen sensor may be used instead of the moisture sensor 17 so that the inner hatch 6 does not open as long as there is oxygen in the internal space 4. As oxygen sensor, hot wire type semiconductor gas sensor, catalytic combustion type gas sensor, gas heat conduction type gas sensor, potentiostatic electrolysis type gas sensor, thin film type gas sensor, diaphragm galvanic cell type gas sensor, semiconductor type gas sensor, orgusta type gas sensor, etc. The gas sensor of can be used.

When the oxygen sensor composed of these gas sensors is used to detect oxygen in the internal space 4, the inner hatch 6 in each of the above embodiments is kept closed. And when the oxygen sensor does not detect oxygen,
The inner hatch 6 can be opened. Therefore, as long as there is oxygen in the internal space 4, the inner hatch 6 is not opened, so that the diffusion of oxygen from the spare box 3 to the main body box 2 is surely prevented and remains inside the main body box 2. It is possible to reliably prevent contact between oxygen and a substance that ignites or explodes when it comes into contact with oxygen.

Other constitutions, functions and effects of the embodiment using the oxygen sensor are the same as those of the above-mentioned embodiments, and therefore their explanation is omitted to avoid duplication.

[0058]

As described above, in the glove box of the present invention, the moisture sensor for detecting the amount of moisture in the internal space of the spare box and the inner hatch when the moisture sensor detects moisture of a predetermined value or more. Since the inner hatch closing means for holding the closed state is provided, when air remains in the spare box, the moisture sensor detects it and the inner hatch closing means holds the inner hatch in the closed position. Oxygen and water vapor in the air inside the box will not diffuse into the main box.

With this, it is possible to surely prevent contact between oxygen and a substance that ignites or explodes when it contacts oxygen remaining in the main body box, and it is possible to enhance the safety of the work of treating such a substance. .

In the present invention, in particular, a slide for moving the inner hatch closing means to the main body box side of the spare box in a direction orthogonal to the axial center direction of the spare box, and the inner hatch is attached to the slide in the axial direction of the spare box. A gas cylinder that can move forward and backward, a gas supply path that supplies a dry gas or an inert gas to this gas cylinder, an electromagnetic valve that opens and closes this gas supply path, and the moisture sensor detects moisture above a predetermined value. In the spare box, when it is configured with a control circuit that connects the gas supply passage with a solenoid valve when the The inner hatch can be opened at the same time when the oxygen purging of the It is possible to reduce the time to move into the body box, it becomes possible to widely use the working space by reducing the space for the inner hatch opening and closing of the main box.

Further, in the present invention, in particular, the inner hatch closing means has a vacuum suction port opened toward the inner hatch at the periphery of the inner opening, and a vacuum circuit for connecting the vacuum suction port to a vacuum source. And a solenoid valve that opens and closes the vacuum circuit, and a control circuit that connects when the moisture sensor detects moisture above a predetermined value and shuts off when the moisture sensor does not detect moisture above a predetermined value. In some cases, when the outer hatch is opened or incompletely closed, argon gas does not flow out of the backup box, reducing the consumption of argon gas, and adding a vacuum suction port and solenoid valve to the conventional glove box. The vacuum circuit
Only by adding a control circuit, the present invention can be implemented easily and inexpensively, and the existing glove box can be easily and inexpensively modified to implement the present invention.

Furthermore, in the present invention, in particular, the inner hatch closing means operates an electromagnet for adsorbing the inner hatch to the closed position, and the electromagnet is operated when the oxygen sensor detects oxygen, and the moisture sensor has a predetermined value. If it is equipped with a control circuit that deactivates when the above moisture is not detected, the argon gas will not be washed away from the spare box when the outer hatch is opened or incompletely closed, reducing the consumption of argon gas. Besides, you can add an electromagnet and a control circuit to the conventional glove box,
The present invention can be implemented more easily and cheaply, and the present invention can be implemented by modifying an existing glove box more easily and cheaper.

Further, the glove box of the present invention is provided with an oxygen sensor for detecting oxygen in the internal space of the spare box, and an inner hatch closing means for holding the inner hatch in a closed state when the oxygen sensor detects oxygen. Therefore, when oxygen remains in the spare box, the oxygen sensor detects it, and the inner hatch closing means holds the inner hatch in the closed position, so the oxygen in the spare box may diffuse into the main box. Disappears.

As a result, it is possible to reliably prevent contact between oxygen and a substance that ignites or explodes when it contacts oxygen remaining in the main body box, and it is possible to enhance the safety of the work for treating such a substance. .

In the present invention, in particular, a slide for moving the inner hatch closing means to the main body box side of the spare box in a direction orthogonal to the axial center direction of the spare box, and the inner hatch is attached to the slide in the axial direction of the spare box. A gas cylinder that can be moved forward and backward, a gas supply path that supplies a dry gas or an inert gas to this gas cylinder, a solenoid valve that opens and closes this gas supply path, and a solenoid valve when the oxygen sensor detects oxygen. When the oxygen sensor is configured to include a control circuit that connects the gas supply path with each other and shuts off the gas supply path with a solenoid valve when the oxygen sensor does not detect oxygen, when the oxygen purge in the spare box is completely completed. At the same time, it will be possible to open the inner hatch, so move from the insertion of the object to be processed into the main box of this object. It is possible to reduce the time to become widely available working space by reducing the space for the inner hatch opening and closing of the main box.

Further, in the present invention, in particular, the inner hatch closing means has a vacuum suction port opened toward the inner hatch at the periphery of the inner opening portion, and a vacuum circuit for communicating the vacuum suction port with a vacuum source. And a solenoid valve that opens and closes this vacuum circuit, and a control circuit that communicates when the oxygen sensor detects oxygen and shuts off when the oxygen sensor does not detect oxygen. Argon gas does not flow out of the spare box when opened or incompletely closed, reducing the consumption of argon gas.In addition, a vacuum suction port in a conventional glove box, a vacuum circuit with a solenoid valve interposed, and a control circuit It is only necessary to add and, and it can be implemented easily and inexpensively,
The present invention can be implemented by modifying an existing glove box easily and inexpensively.

Further, in the present invention, in particular, the inner hatch closing means operates an electromagnet for adsorbing the inner hatch to the closed position, and activates the electromagnet when the oxygen sensor detects oxygen, and the oxygen sensor detects oxygen. If it is equipped with a control circuit that deactivates when it does not detect, argon gas does not flow out from the backup box when the outer hatch is opened or incompletely closed, and it is possible to reduce the consumption of argon gas. Since it is only necessary to add an electromagnet and a control circuit to the glove box,
Moreover, the present invention can be implemented at low cost, and the existing glove box can be modified more easily and more inexpensively to implement the present invention.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a configuration diagram of an inner hatch closing means according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a supporting means according to an embodiment of the present invention.

FIG. 4 is a sectional view of an argon gas cylinder according to an embodiment of the present invention.

FIG. 5 is a configuration diagram of inner hatch closing means of another embodiment of the present invention.

FIG. 6 is a configuration diagram of an inner hatch closing means according to still another embodiment of the present invention.

[Explanation of symbols]

 1 Glove Box 2 Body Box 3 Spare Box 4 Inner Space 5 Inner Opening 6 Inner Hatch 7 Outer Opening 8 Outer Hatch 17 Moisture Sensor 19 Slide 31 Argon Gas Cylinder 33 Argon Gas Supply Path 34 Two-way Solenoid Valve 35 Control Circuit 50 Inside Hatch closing means 51 Vacuum suction port 53 Vacuum circuit 54 Solenoid valve 55 Control circuit 60 Inner hatch closing means 61 Electromagnet 62 Control circuit

Claims (8)

[Claims] 1. A main body box for partitioning a work space in an airtight manner from the outside thereof, a cylindrical spare box having one end communicated with the main body box and the other end communicated with the atmosphere, and the inside of the spare box. A glove box including an inner hatch that opens and closes an inner opening that communicates the space with the main body box, and an outer hatch that opens and closes an outer opening that communicates the inner space of the spare box with the atmosphere, the interior of the spare box A glove box provided with a moisture sensor for detecting the amount of moisture in the space, and an inner hatch closing means for holding the inner hatch in a closed state when the moisture sensor detects moisture of a predetermined value or more. 2. The slide, wherein the inner hatch closing means moves toward the main body box side of the spare box in a direction orthogonal to the axial center direction of the spare box, and the inner hatch can be moved back and forth on the slide in the axial center direction of the spare box. A gas cylinder that supports the gas cylinder, a gas supply path that supplies a dry gas or an inert gas to the gas cylinder, a solenoid valve that opens and closes the gas supply path, and an electromagnetic valve when the moisture sensor detects moisture above a predetermined value. The glove box according to claim 1, further comprising a control circuit that connects the gas supply path with a valve and shuts off the gas supply path with an electromagnetic valve when the moisture sensor does not detect moisture above a predetermined position. 3. The vacuum suction port, wherein the inner hatch closing means is opened toward the inner hatch around the inner opening, and a vacuum circuit for communicating the vacuum suction port with a vacuum source.
An electromagnetic valve that opens and closes the vacuum circuit, and a control circuit that communicates when the moisture sensor detects moisture above a predetermined value and shuts off when the moisture sensor does not detect moisture above a predetermined value. The glove box according to Item 1. 4. The inner hatch closing means is an electromagnet for adsorbing the inner hatch to a closed position, and the electromagnet is activated when the moisture sensor detects moisture above a predetermined value, and the moisture sensor is above a predetermined value. The glove box according to claim 1, further comprising a control circuit that is deactivated when moisture is not detected. 5. A main body box for airtightly dividing a work space from the outside, a cylindrical spare box having one end communicating with the main body box and the other end communicating with the atmosphere, and the inside of the spare box. A glove box including an inner hatch that opens and closes an inner opening that communicates the space with the main body box, and an outer hatch that opens and closes an outer opening that communicates the inner space of the spare box with the atmosphere, the interior of the spare box A glove box provided with an oxygen sensor for detecting oxygen in the space and an inner hatch closing means for holding the inner hatch in a closed state when the oxygen sensor detects oxygen. 6. The slide, wherein the inner hatch closing means moves toward the main body box side of the spare box in a direction orthogonal to the axial center direction of the spare box, and the inner hatch can be moved back and forth on the slide in the axial center direction of the spare box. A gas cylinder that supports the gas cylinder, a gas supply path that supplies a dry gas or an inert gas to the gas cylinder, a solenoid valve that opens and closes the gas supply path, and a solenoid valve that supplies gas when the oxygen sensor detects oxygen. The glove box according to claim 5, further comprising a control circuit that connects the passages and shuts off the gas supply passage with an electromagnetic valve when the oxygen sensor does not detect oxygen. 7. A vacuum suction port in which the inner hatch closing means is opened toward the inner hatch at a peripheral portion of the inner opening, and a vacuum circuit for communicating the vacuum suction port with a vacuum source.
The glove box according to claim 5, further comprising: a solenoid valve that opens and closes the vacuum circuit; and a control circuit that communicates when the oxygen sensor detects oxygen and shuts off when the oxygen sensor does not detect oxygen. 8. The inner hatch closing means includes an electromagnet that adsorbs the inner hatch to a closed position, and activates the electromagnet when the oxygen sensor detects oxygen, and deactivates when the oxygen sensor does not detect oxygen. The glove box according to claim 5, further comprising a control circuit.