JPH08338897A - Glove box - Google Patents

Abstract

PURPOSE: To improve operability by providing an operation room to a box body for handling a sample and preparing a pressure difference holding means to the operation room and box body. CONSTITUTION: A ventilator 21 is operated while a manual regulating valve 23 is adjusted manually and the internal pressures of an operation room and a box body 10 are set at a minute pressure difference. Then, when the preset minute pressure difference is changed through opening or closing of an open/ close type door 18, a differential pressure gauge 24 detects the changes and the changed difference is restored to the preset pressure difference by adjusting an equalizing valve 22. An operator B enters the operation room 17 and puts his hands into gloves 16 for handling. Since the internal pressures of the operation room 17 and box body 10 are set at a minute pressure difference, the gloves 16 are made smaller in thickness than the conventional gloves 4 and the elasticity of a rubber plate 15 increases the degree of freedom of his arms, the operability for handling can be improved greatly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glove box equipped with an elastic material glove that handles radioactive substances, toxic substances, substances that are insensitive to air and moisture.

[0002]

2. Description of the Related Art As shown in FIGS. 3 to 5, a conventional glove box includes an insertion box 1 for inserting a sample, a box body 2 for handling the sample, and a box body 2 for handling the sample from an operation area A. The front wall 3 includes a pair of gloves 4 made of elastic material (for example, rubber) and a ventilation device 6 for ventilating the box body 2. Then, the operator inserts his / her hand into the glove 4 from the work area A to handle the sample inside the box body 2. Reference numeral 7 in the figure is a visual recognition window.

[0003]

The conventional glove 4 is
Since it is placed in the box main body 2 that is negatively pressured by ventilation, it is necessary to have hardness and strength to withstand the negative pressure, which hinders the operability of the operator when handling the sample.

The globe 4 is attached to the front wall 3 by a fixing ring 5 in a replaceable manner. Therefore, when the worker inserts his / her hand into the glove 4 to work, the arm is restrained by the fixing rings 5 and 5, and the operation range is largely restricted.

An object of the present invention is to provide a glove box with improved operability.

[0006]

According to the present invention, in a glow box provided with an elastic material glove that handles radioactive substances, toxic substances, substances that dislike air and moisture, an operation room is attached to the box body that handles samples. A pressure difference holding means for holding the inside of the operation chamber and the inside of the box body to a minute pressure difference is provided.

The pressure difference holding means detects a ventilator, a circuit connecting the ventilator to the operation chamber and the box body, a pressure equalizing valve interposed in the circuit, and an internal pressure of the operation chamber and the box body. A differential pressure gauge for adjusting the pressure equalizing valve so as to maintain a predetermined small pressure difference.

The elastic material globe is made of a soft thin elastic material and is integrally formed with a soft elastic material plate body which is detachably fixed to the front wall of the box body.

[0009]

In the glove box constructed as described above, a small pressure difference is maintained in the box body and the operation chamber by the pressure difference holding means. Therefore, since the glove can be formed of a soft elastic member and is formed integrally with the soft elastic plate fixed to the front wall, the degree of freedom of the arm is increased and the operability is improved.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1 and FIG. 2, the box body 10
An operation chamber 17 is attached to the front side of the airtightly and integrally. A visual recognition window 12 is formed on an upper portion of a front wall 11 of the box body 10, and a rectangular globe attachment opening 13 is formed in the middle thereof. In the opening 13,
A soft elastic material plate, that is, a rubber plate 15 is attached by the globe attachment frame 14. And this rubber plate 15
A pair of gloves 16 formed of a soft thin pressure elastic material, that is, a thin pressure rubber is integrally formed in the. In the figure, reference numeral 18 is an openable door and 19 is an insertion box.

On the other hand, there is provided a pressure difference holding means generally indicated by 20. The pressure difference holding means 20 includes a ventilation device 21, circuits L1 and L2 that connect the ventilation device 21, the operation chamber 17 and the box body 10, respectively, a pressure equalizing valve 22 interposed in the circuit L1, and a circuit L2. A pressure equalization valve connected to the operation chamber 17 and the box body 10 via circuits L3 and L4, respectively, and a differential pressure gauge 24 connected to the pressure equalization valve 22 via a circuit L5. It consists of and.

Next, the operation will be described.

When handling a sample, a manual adjustment valve 2
3 is manually adjusted and the ventilation device 21 is operated to set the internal pressure between the operation chamber 17 and the box body 10 to a minute pressure difference. Then, when the set minute pressure difference changes due to opening and closing of the openable door 18, the differential pressure gauge 24 detects the change, and the pressure equalizing valve 2
2 is adjusted and returned to the set minute pressure difference and held. For the work, the worker B enters the operation room 17 and puts his hand on the glove 16
Put it in. Since the internal pressures of the operation chamber 17 and the box body 10 are minute pressure differences as described above, the globe 16 is formed thinner than the conventional globe 4.
In addition, since the degree of freedom of the arm is increased by the elasticity of the rubber plate 15, the operability is greatly improved.

[0015]

Since the present invention is constructed as described above, the operability can be greatly improved and the workability and work range can be dramatically improved.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an embodiment of the present invention.

FIG. 2 is a view on arrow X in FIG.

FIG. 3 is a front view showing an example of a conventional glove box.

FIG. 4 is a left side view of FIG.

5 is a right side view showing a part of FIG. 3 in section.

[Explanation of symbols]

 A ... Operation area B ... Workers 1, 19 ... Insertion box 2, 10 ... Box body 3, 11 ... Front wall 4, 16 ... Gloves 5 ... Fixing ring 6 , 21 ... Ventilation device 7, 12 ... Viewing window 13 ... Opening portion 14 ... Glove mounting frame 15 ... Rubber plate 17 ... Operating room 18 ... Openable door 20 ...・ Pressure difference holding means 22 ... Pressure equalizing valve 23 ... Manual adjustment valve 24 ... Differential pressure gauge

Claims (3)

[Claims] 1. In a glove box equipped with an elastic material glove for handling radioactive substances, toxic substances, substances that dislike air and moisture, an operating room is attached to a box body for handling a sample, and the operating room and the inside of the box body are minute. A glove box provided with pressure difference holding means for holding a pressure difference. 2. The pressure difference holding means controls a ventilator, a circuit connecting the ventilator to the operation chamber and the box body, a pressure equalizing valve interposed in the circuit, and an internal pressure in the operation chamber and the box body. A glove box comprising: a differential pressure gauge that adjusts the pressure equalizing valve so as to detect and maintain a predetermined small pressure difference. 3. The elastic material glove is formed of a soft thin elastic material, and is integrally formed with a soft elastic material plate body detachably fixed to the front wall of the box body. Glove box.