Liquid seal device
A technology of liquid sealing device and sealing medium, which is applied in the direction of laboratory utensils, laboratory containers, chemical instruments and methods, etc., can solve the problems of reaction system damage and reaction system pollution, and achieve the effect of simplifying operation
Inactive Publication Date: 2008-05-14
LANZHOU UNIVERSITY
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Problems solved by technology
[0003] When using the existing technology, the operator needs to be extra careful to operate, and a little carelessness will cause serious accidents, for example, the liquid seal device is not disconnected from the reaction system during vacuum operation; or, when the reaction system is full If the liquid seal device is not disconnected from the reaction system before inert gas, or the liquid seal device is not disconnected from the external environment in time, the negative pressure inside the reaction system will cause the sealing medium in the liquid seal device or even the outside air to Inhaled back into the reaction system, resulting in contamination of the reaction system
Method used
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[0010] The present invention is explained below in conjunction with embodiment and accompanying drawing:
[0011] in the attached Figures 1 to 4 In the examples given, except for the Figure 4 Except for the structure, the structures of other embodiments are basically similar, that is, the space is divided into the upper part 2 and the lower part 5 by the partition 3, and the pipeline 4 connecting 2 and 5 is provided on the partition 3 , the lower end of which is located near the lower bottom of part 5 of the device, and a pipe 7 connecting the external environment and the interior of the device is provided in the space 5 near the partition 3. The pipeline 1 connected to the reaction system is arranged at the top of the upper space of the partition 3, and the pipeline 7 connected with the external environment is arranged at the lower space of the partition 3 close to the partition 3, and communicates with the top and bottom of the partition 3 The lower end of part of the pi...
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This invention relates to a glass liquid sealing device used in chemical waterless and oxygen-less experiment, characterized in that it sets at least one one-way bucket valve which lets air flow outside the device in the duct line connecting with the reaction system or condition. When the system evacuated, the one-way bucket valve will be closed in the negative pressure of the system, so the reaction system will be isolated with the outside; while filling inactive gas, the one-way bucket valve will be also closed when the system still in negative pressure condition, and when the system in positive pressure condition the valve will be opened.
Description
technical field [0001] The invention relates to a glass-made liquid seal device for chemical anhydrous and oxygen-free tests, in particular to a liquid seal device which needs to be protected by an inert gas after the reaction system is vacuumed. Background technique [0002] In chemical experiments, it is often necessary to evacuate the reaction system, and then fill the reaction system with inert gas to protect the reaction process from the influence of water and oxygen in the air. A liquid seal is required for this purpose. In the prior art, this liquid sealing device generally uses an Erlenmeyer flask with an open pipe on the side wall. A rubber stopper is installed on the mouth of the Erlenmeyer flask, and a section of pipeline is inserted on the rubber stopper. The upstream opening of the pipeline communicates with the reaction system. The opening of the lower end is located near the bottom of the flask. At the same time, liquid paraffin or other sealing medium is pou...
Claims
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IPC IPC(8): B01L3/00
Inventor 武同兴
Owner LANZHOU UNIVERSITY