Access door and sealing box provided with same

Abstract

The invention discloses an access door which is fixedly arranged on any mounting surface of a sealing box. The access door comprises an inner door and an outer door, wherein the inner door is arrangedat one side, towards the inner cavity, of the sealing box; the edge of the inner door and the edge of the outer door are separately in sealing and opening-closing connection with the inner side of amounting surface of the sealing box; and a leakage buffer room is formed between the inner door and the outer door. The invention further discloses the sealing box provided with the access door. A double-layer door is arranged and the leakage buffer room is arranged in the double-layer door, so that purity, in an operating space, of the sealing box is ensured, external substance leakage and invasion which possibly appears as a result of seams or fine diffusion is effectively isolated, water oxygen impurities in the sealing box is kept to be lower than 1 PPM, and gas purity and pressure intensity in the sealing box are effectively controlled.

Description

technical field [0001] The invention relates to the technical field of glove boxes, in particular to an inspection door and a sealed box with the same. Background technique [0002] A sealed box is a box made of metal, glass or plastic. The main box has multiple openings for fittings such as windows, transition chambers and glove ports. The operator uses gloves to operate the materials and equipment in the box to meet the requirements of isolating one or several active components in the air such as oxygen, moisture, carbon dioxide and other sensitive components in the scientific research and production process to achieve airtight operating within the environment. [0003] At present, all airtight boxes have the problem of air leakage. Even if a airtight box is filled with high-purity gas, it is difficult to make the water and oxygen impurity contents inside each less than 1PPM (part per million). During normal use, water and oxygen will continue to rise gradually, making t...

AI Technical Summary

Problems solved by technology

[0003] At present, all the sealed boxes have the problem of air leakage. Even if a sealed box is filled with high-purity gas, it is difficult to make the water and oxygen impurities inside each less than 1PPM (one part per million).

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