JPH0556839B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a separation stopper, in particular a plurality of connected airtight boxes in which a harmful substance is handled or a reaction that produces a harmful substance is carried out; Or, it relates to separation plugs used to separate multiple connected airtight boxes housing devices that handle hazardous substances or devices that require special atmospheres such as reducing, oxidizing, dry or humid atmospheres. be.

[Background of the invention]

The conventional separation plug for airtight boxes was developed in Japanese Patent Application Laid-Open No. 1986-
As described in Japanese Patent No. 125493, it was a device that connected a sealed container and an airtight box and opened and closed the lid of the sealed container without exposing it to the atmosphere. This separation stopper is an opening/closing device for a sealed container and an airtight box, and it is dimensionally difficult to maintain airtightness at the joint between the airtight boxes connected in two stages. The problem was that it was easy to open.

[Purpose of the invention]

An object of the present invention is to provide a separation stopper that can easily maintain the airtight state of each of a plurality of airtight boxes to be separated.

[Summary of the invention]

A feature of the present invention is that the first flange at the upper end of the cylindrical connection member has a third flange at the lower end of the upper airtight box.
When the upper airtight box and the lower airtight box of the airtight box device are separated from each other, the upper airtight box and the lower airtight box are separated from each other in an airtight box device in which a fourth flange at the upper end of the lower airtight box is removably attached to a second flange at the lower end of the cylindrical connecting member. Separation plugs that maintain the airtightness of each of the lower airtight boxes, including an upper airtight member that is seated on the second flange from above, and an upper airtight member that is located below the upper airtight member and is seated on the fourth flange from above. a lower airtight member removably engaged with the upper airtight member;
When the lower rotating shaft rotatably attached to the lower airtight member is disengaged from the upper airtight member, and the lower rotating shaft is rotated based on the rotation of the lower rotating shaft. When it comes into contact with the lower surface of the fourth flange due to movement along the
a lower lever that brings the lower airtight member into close contact with the fourth flange; an upper rotating shaft rotatably attached to the upper airtight member; and a lower lever that brings the lower airtight member into close contact with the fourth flange;
and a lower lever portion that brings the lower airtight member into close contact with the second flange when it comes into contact with the lower surface of the flange.

[Embodiments of the invention]

Before explaining a separation plug which is a preferred embodiment of the present invention, an example of the structure of a glove box to which the separation plug is applied will be described with reference to FIG. The glove box is constructed by connecting an upper glove box 1 and a lower glove box 2 with a short cylindrical connecting pipe 3. That is, the flange 21 provided at the upper end of the connecting short pipe 3 and the flange 23 provided at the lower surface of the upper glove box 1 are connected by bolts, and the flange 21 provided at the lower end of the connecting short pipe 3 is connected by a bolt. The flange 22 and a flange 24 provided on the upper surface of the lower glove box 2 are connected by bolts. The internal spaces of the upper glove box 1, the lower glove box 2, and the connecting short pipe 3 are communicated through openings 46 and 47, respectively, and are kept airtight from the outside atmosphere. The separation stopper is pre-placed in the lower glove box 2.

The separation plug 50 of this embodiment will be explained with reference to FIG. The separating plug has two gas-tight members 25 and 30. The airtight member 25 has an annular plate 26, a container-shaped connecting portion 27, and a boss portion 28. The container-shaped connecting portion 27 has a container-like shape that has a space inside which is opened at one end like a teacup. The container-shaped connecting portion 27 is arranged so that the opening faces downward, and is attached to the annular plate 26 near the opening. The annular plate 26 surrounds the container connecting portion 27 . The boss portion 28 is provided at the upper end of the container-like connecting portion 27 and at the center thereof. screw hole 43
is provided at the lower part of the boss portion 28. A plurality of reinforcing ribs are attached across the annular plate 26, the container-like connecting portion 27, and the boss portion 28. The airtight member 30 includes an annular plate 31, a container-shaped connecting portion 32, and a boss portion 33. The container-like connecting portion 32 has the same shape as the container-like connecting portion 27 and is arranged in the same manner. The annular plate 31 is attached to the container-like connection portion 32 near the opening of the internal space of the container-like connection 32 . A boss portion 33 is attached to the upper end of the container-like connecting portion 32 at its center. The container-like connecting portion 32 and the boss portion 33 are inserted into the internal space of the container-like connecting portion 27 . The outer peripheral portions of the annular plates 26 and 31 are tapered. Seal gaskets 5A and 5B are provided on the outer periphery of each disc. A lower lever 13 is rotatably attached to the inner part of the annular disk 31 by a pin 42.

The upper shaft 8 has protrusions 2 at its lower end and at its upper part, respectively.
9 and 37 are provided. The lower end of the upper shaft 8 and the projection 29 are rotatably attached to the boss 28 . An upper handle 7 is provided at the upper end of the upper shaft 8. The hanging fixture 4 is attached to the handle 7 on an extension of the axis of the upper shaft 8. A support member 38 is supported by the protrusion 37 and is attached to the upper shaft 8 so as to rotate around the protrusion 37 . The upper lever 6 having the guide groove 40 is connected to the pin 3
9 is attached to the support member 38 so as to be rotatable in the axial direction of the upper shaft 8. The upper boss 9 provided with the link portion 47 meshes with a screw provided at the lower part of the upper shaft 8. A pin 41 provided at the tip of the link portion 47 is inserted into the guide groove 40 .

The lower shaft 11 has a protrusion 35 at its upper end,
Further, a threaded portion 44 is provided above the protrusion 35 . The protruding portion 35 and the threaded portion 44 are rotatably inserted into the boss portion 33. The holding member 34 is attached to the lower surface of the boss portion 33 with a screw and supports the projection portion 35. The lower boss 12 connected to the presser member 34 by a plurality of ribs 46 is connected to the lower shaft 1
It engages with the screw provided at the bottom of 1. The lower shaft 11 passes through the presser member 34. lower handle 1
0 is provided at the lower end of the lower shaft 11. Lower boss 1
2. The holding member 34 and the rib 46 are inserted into the internal space of the container-like connecting portion 32.

FIG. 3 shows a state in which the upper and lower parts of the separation plug 50 are connected. That is, the separation plug 50
are the threaded part 44 and boss part 28 at the upper end of the lower shaft 11.
By engaging with the screw hole 43 of the airtight member 2
5 and the airtight member 30 are connected, and the upper part of the separation plug 50 and the lower part thereof are connected. In this state, the lower surface of the annular plate 26 is in contact with the upper surface of the annular plate 31, the upper surface of the boss portion 33 is in contact with the container-shaped connecting portion 27, and the axis of the upper shaft 8 and that of the lower shaft 11 are aligned. ing. Furthermore, the lower boss 12 has been raised to a position where it does not come into contact with the lower lever 13, and the lower boss 12
can rotate around pin 42. The upper boss 9 is also located near the boss portion 28, and the upper lever 6 is oriented diagonally downward. The separation plug 5 is stored in the lower glove box 2 in the state shown in FIG.

Upper glove box 1 and lower glove box 2
When separating the upper glove box 1, the hanging fitting 4 is lifted using a device (not shown) provided in the upper glove box 1, the annular plates 26 and 31 are inserted into the openings 47 of the flanges 22 and 24, and the seal is removed. The gasket 5A is seated on the flange 22, and the seal gasket 5B is seated on the flange 24 (FIG. 3). The opening 47 sides of the flanges 22 and 24 are tapered like the outer peripheries of the annular plates 26 and 31. With each seal gasket seated on each flange, the upper handle 7 is rotated, the upper shaft 8 is rotated, and the upper boss 9 is moved upward. For this reason, the pin 41 provided in the link portion 47 is inserted into the guide groove 40.
, the upper lever 6 rotates upward. Eventually, the tip of the upper lever 6 is inserted into the notch 45 provided in the flange 21, and
It contacts the lower surface of the flange 23. In this state,
The seal gasket 5A is pressed against the flange 22 and comes into close contact with it. Next, the handle 10 is rotated to rotate the lower shaft 11 and move the lower boss 12 downward. Due to this movement, the portion of the lower lever 13 near the pin 42 is pushed downward by the lower boss 12, and the lower lever 13 rotates around the pin 42. Eventually, the tip of the lower lever 13 comes into contact with the lower surface of the annular plate 31, and a pressing force acts on the seal gasket 5B. In this way, the seal gasket 5B is brought into close contact with the flange 24. Due to the rotation of the lower shaft 11 that moves the lower boss 12 downward, the threaded portion 44 is removed from the screw hole 43, and the airtight member 25 and the airtight member 30 are removed.
The connection state with is canceled. FIG. 2 shows this state.

When the bolts connecting the flanges 22 and 24 are removed and the upper glove box 1 is lifted, the upper glove box 1, connecting short pipe 3, and lower glove box 2 are separated as shown in FIG. The separated upper glove box 1 is kept airtight by sealing the opening 47 provided in the flange 22 of the connecting short pipe 3 with the airtight member 25. In addition, the separated lower glove box 2 has the opening 47 of the flange 24 connected to the airtight member 25.
It is kept airtight by sealing it.

According to this embodiment, the following effects can be obtained.

(1) Since the separation plug 50 can integrate the airtight members 25 and 30 by engaging the screw portion 44 and the screw hole 43, it can be easily transported within the glove box and the work time required for transportation is shortened. can.

(2) The airtight members can be attached to the separated upper and lower glove boxes 1 and 2 using one handle each, and the time required for the attachment is short.

(3) By rotating the lower shaft 11, the airtight member 25 and the airtight member 30 can be easily separated, and the upper glove box 1 and the lower glove box 2 can be easily separated while maintaining airtightness between them.

(4) The atmosphere inside the upper glove box 1 and the lower glove box 2 can be separated without releasing them to the atmosphere.

(5) It can be attached to the opening of a glove box that is conventionally connected to other glove boxes, and can be connected to other glove boxes while maintaining airtightness.

〔Effect of the invention〕

According to the present invention, when separating a plurality of connected airtight boxes, the airtightness of each airtight box can be easily maintained, and the work for maintaining the airtightness can be done in a short time.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a state in which a plurality of airtight boxes are connected, and FIG. 2 is an explanatory diagram showing a state in which a separation plug, which is a preferred embodiment of the present invention, is attached to the connection part of each airtight box. Figure 3 is an explanatory diagram showing the state of the separation plugs before they are installed in each airtight box.
FIG. 4 is an explanatory diagram showing the state of the separated airtight box closed by the separation plug. 1...Upper glove box, 2...Lower glove box, 3...Connection short pipe, 4...Hanging fitting, 5
A, 5B... Seal gasket, 6... Upper lever, 7... Upper handle, 8... Upper shaft, 9... Upper boss, 10... Lower handle, 11... Lower shaft, 12...
...Lower boss, 13...Lower lever, 25, 30...Airtight member.

Claims (1)

[Scope of Claims] 1. The third flange at the lower end of the upper airtight box of the first flange at the upper end of the cylindrical connection member is removable, and the fourth flange at the upper end of the lower airtight box is removable from the second flange at the lower end of the cylindrical connection member. A separation plug that maintains the airtightness of each of the upper and lower airtight boxes when the upper airtight box and the lower airtight box of the airtight box device attached to the airtight box are separated, the separation plug maintaining the airtightness of each of the upper and lower airtight boxes, the separation plug being attached to the second flange from above. an upper airtight member to be seated; a lower airtight member located below the upper airtight member and seated on the fourth flange from above; and detachably engaged with the upper airtight member and rotatable to the lower airtight member. a lower rotating shaft attached to the lower rotating shaft; and when the engagement between the lower rotating shaft and the upper airtight member is released, and the lower rotating shaft is moved along the lower rotating shaft based on the rotation of the lower rotating shaft, the fourth a lower lever portion that brings the lower airtight member into close contact with the fourth flange when it comes into contact with the lower surface of the flange; an upper rotating shaft rotatably attached to the upper airtight member; and based on the rotation of the upper rotating shaft. A separation plug comprising a lower lever portion that brings the lower airtight member into close contact with the second flange when it comes into contact with the lower surface of the third flange by moving along the upper rotation axis.