A laboratory nitrogen protection pressurized filter device

Abstract

The invention relates to the technical field of chemical synthesis preparation vessels, and discloses a nitrogen-protected pressurized filter device for laboratories, which includes a nitrogen bottle and a filter cartridge, a cover plate is fixedly installed on the top of the filter cartridge, and fixedly connected with The side cylinder, the left and right sides of the top output end of the nitrogen cylinder are fixedly connected with the second air intake pipe, the front side of the top output end of the nitrogen cylinder is fixedly connected with the first air intake pipe, and the two side cylinder cavities are provided with a pressure injection mechanism. The laboratory uses nitrogen to protect the pressurized filter device. After the nitrogen bottle of the present invention injects nitrogen into the filter cartridge chamber through the first air inlet pipe, nitrogen is injected into the filter cartridge chamber to increase the pressure. The material falls on the first filter screen and then passes through the injection After the nitrogen is pressurized and filtered through the second intake pipe, the nitrogen gas is injected into the side cylinder cavity, and after the side cylinder cavity is pressurized, the piston plate is pushed to further pressurize the filter cylinder cavity, and the filter cylinder is improved. Filtration efficiency of the first filter screen in the cavity for materials.

Description

technical field [0001] The invention relates to the technical field of chemical synthesis preparation vessels, in particular to a nitrogen-protected pressurized filtration device for laboratories. Background technique [0002] Nitrogen pressure filtration is a simple, fast and efficient separation method, which is suitable for chemical analysis, health inspection, petroleum industry, pharmaceutical industry, dye industry, etc. The principle is that the suspension passes through the medium under the action of external force, and the solid particles and other substances are intercepted by the filter medium, so that the solid and other substances are separated from the liquid. Commonly used filter devices in the laboratory include Buchner funnel and glass funnel, or can be connected with a vacuum pump to achieve suction filtration. When some chemicals are separated, they will deliquesce when encountering water vapor in the air, or degrade when encountering oxygen, or even catch...

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Problems solved by technology

[0003] The nitrogen protection pressurized filter device in the prior art often has the following disadvantages in the specific actual use process. First, it cannot be squeezed and filtered separately according to the capacity of the material. When the material is less, the realization of the same nitrogen will lead to waste. The problem of nitrogen, when there are many materials, it is easy to cause the material medium to block the filter screen. Second, the existing technology cannot perform linkage cleaning on the filter screen, which is prone to the problem of medium blocking the filter screen

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