Special liquid taking device for flammable liquid

A technology for flammable liquids and liquid needles, which can be applied to measuring tubes/pipettes, laboratory containers, chemical instruments and methods, etc. Solve the effect of slow failure of reagents, high work efficiency and simple operation

Inactive Publication Date: 2017-01-18
SICHUAN TONGSHENG BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a special liquid-taking device for flammable liquids, which is a taking tool designed for extremely dangerous flammable liquid chemical re

Method used

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  • Special liquid taking device for flammable liquid
  • Special liquid taking device for flammable liquid
  • Special liquid taking device for flammable liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as Figure 1-Figure 2 As shown, a special liquid-taking device for flammable liquids includes a liquid-taking cylinder 1, a piston 3 is set inside the liquid-taking cylinder 1, a liquid-taking port 6 is provided at the bottom of the liquid-taking cylinder 1, and the liquid-taking port 6 A liquid-taking needle 61 is provided at the position, and a protective air bag 2 is provided on the side of the liquid-taking cylinder 1. The upper and lower ends of the protective air bag 2 are respectively provided with an air inlet 21 and a ventilation port 22. The air inlet 21 is An air intake pipe 211 is provided, and the air intake pipe 211 extends into the protective airbag 2. An air intake valve is provided on the air intake pipe 211. The air intake valve includes a spring member one 212 and an air pressure cover one 215. The air pressure cover one 215 is located at Protect the outlet of the air intake pipe 211 in the air bag 2, and the spring member one 212 connects the ai...

Embodiment 2

[0030] Further optimization is carried out on the basis of a special liquid-taking device for flammable liquids described in Embodiment 1. The junction of the air intake pipe 211 and the air pressure cap 215 is provided with a guide groove 1 213 along the axial direction of the intake pipe 211, The corresponding position of the air pressure cover one 215 is provided with a guide post one 214, and the guide post one 214 is sleeved inside the guide groove one 213, and the connection between the air intake pipe 211 and the air pressure cover one 215 is provided with a sealing ring; The embodiment can effectively prevent the displacement of the air pressure cover 1 215 and ensure the airtightness of the device.

Embodiment 3

[0032] Such as image 3 As shown, further optimization is carried out on the basis of a special liquid-taking device for flammable liquids described in Embodiment 1, a spring member 2 223 is provided inside the vent tube 221, and an air pressure tube 223 is provided at the outer end of the vent tube 221. Cover two 224, the air exchange tube 221 and the air pressure cover two 224 are connected through the spring part two 223. In this embodiment, when the gas inside the protective airbag 2 is drawn out, the inside of the protective airbag 2 is negative pressure, and the spring part 223 Under the pulling force of the second and the effect of the external atmospheric pressure, the air pressure cover 224 blocks the ventilation pipe 221, preventing external gas from entering the inside of the protective airbag 2.

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PUM

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Abstract

The invention discloses a special liquid taking device for a flammable liquid, and relates to the field of dangerous chemical agent taking tools. The special liquid taking device comprises a liquid taking cylinder, wherein a piston is sleeved by the liquid taking cylinder; a liquid taking hole is formed in the bottom of the liquid taking cylinder; a liquid taking needle is arranged at the liquid taking hole; a protection airbag is arranged on a side of the liquid taking cylinder; an air inlet and an air exchange hole are respectively formed in the upper end and the lower end of the protection air bag; the air inlet and the air exchange hole are fixed on the liquid taking cylinder; an air inlet tube, a spring I and an air pressure cover I are arranged at the air inlet; the air inlet tube extends into the protection air bag; the air pressure cover I is arranged at the outlet of the air inlet tube inside the protection airbag; the spring I is connected with the air inlet tube and the air pressure cover I; an air exchange tube is arranged at the air exchange hole; the air exchange tube is communicated with the interior of the protection airbag; the air exchange tube is sleeved by the air exchange cover; the air exchange tube is further connected with an air communicating tube; the air communicating tube is connected with an air needle or is sleeved by a protection cover.

Description

technical field [0001] The invention relates to the field of taking tools for dangerous chemical reagents, in particular to a special liquid taking device for flammable liquids. Background technique [0002] In organic chemistry experiments, it is inevitable to use dangerous and flammable chemical reagents that undergo violent chemical reactions when meeting water and oxygen at room temperature, such as butyllithium, which is prone to exothermic reactions when meeting water and oxygen. High concentrations (greater than 1.0M) of butyllithium Lithium-based solution is easy to burn rapidly when it encounters humid air, and the solvent in the packaging container is generally a flammable and explosive liquid with a low boiling point. Attention should be paid to the use of liquid dangerous and flammable chemical reagents that can undergo violent chemical reactions when they meet water and oxygen at room temperature. [0003] In the prior art, there are no tools specifically for t...

Claims

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Application Information

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IPC IPC(8): B01L3/02
CPCB01L3/0293B01L3/0217B01L2200/06B01L2200/0689B01L2200/082B01L2200/16
Inventor 陈纹锐黄春黄青春李德勇燕青白顺强张丽李根
Owner SICHUAN TONGSHENG BIOTECH
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