JPS59219000A - Bang for glove exchange in shield box - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention provides a container or a shielding box (hereinafter referred to as "shielding substance") capable of shielding radioactive substances that cannot be directly touched, or equipment that is operated in an atmosphere that cannot be touched (hereinafter referred to as "shielding material"). (simply referred to as a glove box), and a glove for internal operations attached to the wall of the glove box, or a plastic bag for entering and exiting items, etc., is sealed with the wall of the glove box as the border. When doing
The present invention relates to an improvement in the structure of a sealing device (hereinafter simply referred to as a glove changing bang) used as an airtight maintenance means for the sealing.

In general, a glove box in which shielding substances are operated, as shown in Fig. 1, seals the inside of the glove box 1 from the outside, and also includes gloves 3 that can be obtained from outside the box 1, and gloves that are necessary or unnecessary in the box 1 for work. When an article is generated, the contaminants contained in the polyvinyl chloride bag 4 and box 1 used for loading and unloading the article are filtered.
air supply filter 5 and exhaust air filter 5' for
etc. are installed on the wall. Moreover, in this case, for example, if we look at the structure of the boat part 6 to which the glove 3 is attached, we can see that the through hole in the wall 2 has a concave cross section, as shown in the enlarged view M in Figure NS'2. A cylindrical fixed boat 8 is fixed via a ring-shaped backing 7, and a base 9 of the glove 3 is attached to an O-ring 10 and a sealing tightening band 11 on the outer periphery of the boat 8.
It has a structure that is tightly fixed with fasteners such as.

and dig in box 1 by glove 3 for example
thing? 1 can be operated extremely safely and easily by inserting the hand into the glove 3 from outside the box 1.

In such a structure, when the glove 3 needs to be replaced due to the lapse of its service life, the following method is used.

First, the new glove 12 (hereinafter referred to as the new glove).

) is placed by inserting the fingertip side of the new glove 12 into the old glove 3 following the old glove 3 (hereinafter referred to as the old glove), and as shown in FIG.
．． 14. Operate the glove replacement bung 17, which is composed of a thick cylindrical rubber 15, a tightening handle 16, etc., to inflate the rubber 15 outward (in the radial direction) as shown by the broken line, and remove the new and old gloves 12. A part of the circumferential surface of .3 is pressed against the inner circumferential surface of the fixed boat 8 to seal the inside of the box 1 from the outside. Next, remove the sealing tightening band 11,
Fold back the base 9 of the old glove 3 to the O-ring 10.

In this case, there is a possibility that minute amounts of contaminants may adhere to the surface of the folded base 9 and the outer peripheral surface of the fixed boat 8, and if they do, it is necessary to carefully remove them using an appropriate method.

Next, although not shown, the base 18 of the new glove 12 is positioned on the circumference of the fixed boat 8 beyond the base 9 of the folded old glove 3, and its outer circumference is sealed with the tightening band 11 around the outer circumference of the fixed boat 8. I'm going to take it.

After that, when operating the handle 16, loosen the bang 17, grab the old glove 3 from inside the new glove 12, and put the old glove 3 together with the O-ring 10 into the box.
The old and new gloves 12.3 are exchanged by pulling them inward, dropping them into the box 1, and finally pulling a new O-ring 10 onto the base 18 of the new glove 12.

It goes without saying that the bag exchange 4 is carried out in a similar manner.

In addition, in this case, if we look at the specific structure of the glove exchange bung 17 used when exchanging the gloves 12 and 3, as shown in an enlarged view in Figure 3, it mainly consists of a seal around the inner circumference of the fixed boat 8. a rubber cylindrical body 15 for use, and a disc-shaped desk 14a that is applied to both end surfaces of the rubber cylindrical body 15.
3 and a concave plate 13, the head part is welded to the center of the plate 13 (welded part 19), and the outer peripheral surface of the small hole 20 of the cylindrical body 15 is connected to the plates 1 to 13 and the washer 21.
Integrated clamping and crimping (crimping part 22) t! A bolt 23 consisting of a L-shaped bolt 23, a tightening shaft 24 having a threaded hole that can be screwed into the bolt 23 and made of material [Ii3], and a handle attached to the tightening jaws 71-24. Tighten the bolt 23 by rotating the shaft 16 (advance it into the screw hole of the shaft 24 to bring the desk 14 and the plate 13 closer together, and deform the rubber cylindrical body 15 in the radial direction to form a bulging structure. .

However, the bang 17 having such a structure is, for example, damaged due to the expiration of its service life or damage. Since the bang 17 is integrated, it cannot be easily attached or detached, resulting in the entire bang 17 being thrown away as waste.

This would be extremely uneconomical. Furthermore, when the tightening shaft 24 is rotated, as the tightening port approaches the end, the elastic force in the axial direction of the rubber cylindrical body 15 that acts in the opposite direction to the direction in which the desk 14 and the plate 13 approach increases. Therefore, due to the pressing force of the washer 25, the washer 25
Damage may occur, such as the surface of the desk 14 that is in direct contact with the bolt being scratched, or the threaded surface of the bolt 23 being scratched by the tightening shaft 24. Moreover, depending on the galling condition, the handle 16 may not rotate smoothly, so the rubber cylindrical body 15 may have sufficient sealing effect (or
There is also a risk that a sufficient bulge (5) may not be obtained. In addition, the degree of sealing of the inner peripheral surface of the fixed port 8 by this bung 17 is determined by the amount of tightening determined by the operator's intuition (=J
Because of this, the sealing effect differs from worker to worker, and there may be cases where an unnecessary amount of tightening is required.

In view of the above points, the present invention aims to provide a bank that is economical, has constant tightening force at all times, and can be tightened with low torque, and can be tightened safely by anyone. The main idea is that one end is made of a cylindrical body made of a stretchable elastic body with a small hole in the center in the axial direction, and the cylindrical body is applied to both end faces of the cylindrical body. One end of the plate is removably fixed to the outer circumferential surface of the small hole of the cylindrical body, and the intermediate part is connected by screwing within the cylindrical body, and the other end passes through the through hole of the other plate. A screwing mechanism, such as a bolt-nut type, in which the plate tightening part of the flanged part is in contact with the outside, a stopper mechanism that adjusts the tightening of the screwing mechanism, and a plate that connects the flanged part and the other plate. The glove replacement bang consists of a thrust bearing interposed between the two.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In FIG.
7 and a large hole 28 at the other end, and a thick-walled rubber cylinder made of stretchable Roloprene rubber and having a ring-shaped groove on the outer periphery, and 29 a small hole 27 that is placed against one end surface of the rubber cylinder 26 It is a dish-shaped plate made of stainless steel (SUS) having a similar small π30 in the center, and its outer diameter is smaller than the outer diameter of the rubber cylindrical body 26.

Reference numeral 31 designates a disk-shaped desk made of duralumin (aluminum alloy) or reinforced plastic material, which has a small hole 32 in the center that is placed against the other end surface of the rubber cylindrical body 26, and the outside thereof is plated with chrome, for example. A handle 33 made of brass material is rotatably attached. Moreover, the outer diameter of the desk 31 is smaller than that of the rubber cylindrical body 26. 34 is a screw type M4 for connecting and integrating the rubber cylindrical body 26, the plates 1 to 29 applied to both ends thereof, and the disk 31; in this case, it is mainly inserted through the small hole 30 of the plate 29. A bolt 36 made of stainless steel with a man-diameter head 35 inserted into the small hole 30 of the desk 31 and a pongee shaft 37 inserted so as to be screwed into the bolt 36 from the small hole 32 side of the desk 31. In addition, the bolt 36 is made of a trapezoidal thread to prevent galling, and the bolt 36 is made of a trapezoidal thread to prevent the shaft 37 from being inserted from the small hole 32 outside of the small hole 32. A flange 38 with a large diameter is formed, and a tightening part 39 made of a hexagonal surface similar to the head of a bolt for screwing the shaft 37 into the ports 1 to 36 is formed on the outside of the flange 38. It has become. Moreover, in this case, the bolt 36 on the plate 29 side
In the head 35, the trapezoidal screws of ports 1 to 36 are placed between the washer 42 and the plate 29 by tightening a nut 41 that is screwed into a threaded portion 40 on which another screw is formed. A 1 m portion of the outer periphery of the small hole 27 of the rubber cylindrical body 26 is firmly clamped and integrated with the bolt 36.

Reference numeral 43 denotes a thrust bearing disposed between the collar portion 38 and the desk 31, which characterizes a part of the present invention. 44
is fitted in the rubber cylindrical body 26 between the end face of the tightening shaft 17 and the bolt 3G. Sada () If you screw together with bolt 36 and proceed,
Further cocoon selection by the shaft 37 is prevented.

Reference numeral 45 is a T-shaped wrench that can be fitted into the tightening cylinder 3 of the tightening shaft 37 and is used to move the shaft 37 forward and backward.

When assembling something with such a configuration, the procedure shown in Figure 5 is 1-
Bolt 36, plate 29, washer 42, nut 41, t, (screw 44, rubber cylinder 26, screw to prevent the tightening shaft 37 from slipping to the desk 31 but 11)
The tubing ring 46, J member (casting prevention) 1, 2, 7, 47, desk 31, thrust bearing 43, and tightening shaft 37 are arranged in this order, and fitted into each other in 0, 1, 1, and screwed together. The Lee glove replacement bang shown in Figure 4 is extremely easy to assemble.

Regarding the method of using the negative-use nozzle for glove exchange with such a configuration, tighten it with a T-type wrench 45 (=I 8H39 is the same as in the case shown in Figure 2). Although the explanation thereof will be omitted, when compared with the conventional one not shown in Fig. 3, it is shown in Fig. 4. Therefore, the service life is generally the shortest (1 rubber PJ tube 26, and other parts can be easily replaced, making it extremely economical. Also, the flange 38 and desk 3
Since a thrust bearing 43 is interposed between the
There is no galling on the threaded surfaces of the poles 1 to 23 or on the surface of the desk 14 as in the past, and anyone can tighten the screws with a low torque (approximately 30 kg-cm).

Also, even if the tightening shaft 37 is moved forward, the stopper spring 4
4, if the shaft 37 is advanced to the specified length, the shaft 37 will be stirred, so there is no risk of adding unnecessary tightening amount, and therefore the tightening force will be constant even if anyone does it. .

In addition, since the handle 33 is pre-attached to the desk 31, it is convenient for attaching the handle 33 when carrying around or changing gloves at a high place in the glove box 1.

Moreover, since the outer circumferences of the desk 31 and plays 1 to 29 are arranged inside the outer circumferential surface of the rubber cylindrical body 26, the new glow 712 inserted as a replacement may be damaged by the desk 31 or the plate 29. There is no fear that it will happen.

In one embodiment of the present invention, the screwing mechanism 44 has a screw hole on the I shaft 37 side, but conversely, the tightening shaft 37 side has a bolt, and the bolt 36
It is also possible to use bolts on the desk 31 side and the plate 29 side, and use a so-called turnbuckle-like type in which the ends of these poles are connected to each other. It falls within the scope of the organization.

Further, in this invention, the material of the bolt 36 is made harder than the material of the tightening shaft 37 in consideration of galling prevention, but the material is not particularly limited thereto.

Furthermore, in consideration of weight reduction, the desk 31 and the like are made of duralumin, reinforced plastic, etc., but the desk 31 and the like are not limited thereto, and may be made of the same material in cases where weight reduction is not a particular problem.

Also, in this embodiment, the stopper lXff #+'/r
Although a helical spring is used as the spring 44, it is also possible to use a rubber sleeve-like spring.

According to this invention, the bank structure is easy to replace by unitizing each part, so it is extremely economical, and the parts can be handled safely and easily. Value is extremely human.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a general glove box, Fig. 2 is an explanatory view of main parts showing a general glove exchange state, Fig. 3 is an explanatory view showing a conventional bung, and Fig. 4 is an explanatory view of the present invention. FIG. 5 is an explanatory diagram showing one embodiment, and FIG. 5 is a perspective view showing the assembled state of FIG. 4. 1 Nigelrobe Box, 2: Wall, 3, 12 Nigelrobe,
4: Bag, 5.5-: Filter, 6: Bow part structure, 7: Packing, 8: Fixed boat, 9.18: Tool part,
10:0 ring, 11: tightening band, 13.29 nibrate, 1'l-, 31: desk, 15.26: rubber cylinder, 16: handle, 17: hang, 19: melt shield part, 2
0.27, 28° 30.32: hole, 21.25, 42:
Washer, 22: Caulking part, 23, 36: Bolt, 24
゜37: Shimei"shi V No. 1~. 33: Toride, 34: '
IA combined IKM structure, 35: Head, 38: Flange, 39: Tightening fj part, 40: Threaded part, 41: Nut, 43 Ni-last bearing, 44: Spring, 45: T-type wrench, 46: Stop ring, 47 : Damage prevention ring.

Claims (1)

[Scope of Claims] 1. A cylindrical body made of a stretchable elastic body having a small hole approximately in the center in the axial direction; a plate applied to both end surfaces of the cylindrical body; The plate is fixed to the outer circumferential surface of the small hole of the cylindrical body in a disassembly manner, the intermediate part thereof is connected by screwing within the cylindrical body, and the other end passes through the other plate through-hole to form a flange-like part on the outside of the through-hole. A screwing mechanism, such as a bolt-nut type, in which the plate tightening portions are in contact with each other, a stopper mechanism for adjusting the tightening level of the screwing mechanism, and a stopper mechanism interposed between the flanged portion and the other plate. A bung for glove replacement in a shielding box, characterized by comprising a thrust bearing. 2. The screwing mechanism includes a bolt at one end, and a long nut that can be screwed onto the bolt at the other end. Bank for. 3. The bank for glove replacement in a shielding box according to claim 2, wherein the port 1 is made of long oak 1 to hardwood. 4. The glove changing bank in a shielding box according to claim 3, wherein the square screw is a trapezoidal screw. 5. The glove changing bang in a shielding box according to claim 1, wherein the stopper mechanism is constituted by a helical spring. 6. The glove-changing bang for a shielding box according to claim 1, wherein the plate is made of aluminum alloy or reinforced plastic.