阅读说明：本技术 一种回流提取的防溅装置 (Splash-proof device that backward flow was drawed ) 是由 宋霞 刘亚蓉 吴立斌 李永鹏 卜晨琛 王珺 乔亚玲 张春平 于 2020-05-22 设计创作，主要内容包括：本发明公开了一种回流提取的防溅装置,属于分析装置领域。该装置包括滤网,所述滤网用于安装至回流管的下端部,所述滤网的中心处向下凸起。本发明提供一种回流提取的防溅装置,滤网的设置,可以使爆沸带动的待提取物溅射在滤网上,回流的液体在表面张力的作用下,不会直接留下,而会沿着滤网流动到最低点再低落,由于滤网的中心处向下凸起,因此回流的液体会在滤网上流动,将待提取物带动至滤网的中心处,而后当回流的液体的表面张力不足以支撑液体的重力时,液体会带动待提取物一同滴落至烧杯中,进行继续提取。(The invention discloses a splash-proof device for reflux extraction, and belongs to the field of analysis devices. The device comprises a filter screen for mounting to the lower end of a return pipe, the centre of the filter screen being downwardly convex. The invention provides a splash-proof device for reflux extraction, wherein a filter screen is arranged, so that an extract to be extracted driven by bumping can be sputtered on the filter screen, the refluxed liquid cannot be directly left under the action of surface tension and can flow to the lowest point along the filter screen and then fall, and the center of the filter screen is downwards convex, so that the refluxed liquid can flow on the filter screen, the extract to be extracted is driven to the center of the filter screen, and then when the surface tension of the refluxed liquid is not enough to support the gravity of the liquid, the liquid can drive the extract to be extracted to drop into a beaker together for continuous extraction.)

1. The splash-proof device of the backflow extraction device is characterized by comprising a filter screen, wherein the filter screen is used for being installed at the lower end part of a backflow pipe, and the center of the filter screen is downwards protruded.

2. The anti-splash device of the backflow extraction device, according to claim 1, wherein the filter screen is of a hemispherical thin-wall structure, elastic pieces are uniformly arranged on the periphery of the filter screen in the circumferential direction, and the elastic pieces are matched with the inner diameter of the backflow pipe.

3. The anti-splash device of the backflow extraction device, as claimed in claim 1 or 2, further comprising a magnetic block, wherein the elastic sheet is made of a magnetic material, and the magnetic block is fixed to the outer side of the lower end of the backflow pipe for adsorbing the filter screen.

4. The anti-splash device of the backflow extraction device, wherein the magnetic block comprises a first semi-annular magnetic ring and a second semi-annular magnetic ring, the end of the first magnetic ring is arranged opposite to the end of the second magnetic ring, and when the first magnetic ring and the second magnetic ring are embraced at the lower end of the backflow pipe, the end of the first magnetic ring and the end of the second magnetic ring have a gap.

5. The anti-splash device of claim 4, wherein the first magnetic ring and the second magnetic ring are soft magnetic strips.

6. The anti-splash device of claim 3, wherein the magnetic block is an electromagnet.

7. The anti-splash device of claim 4, wherein the magnetic block is an electromagnet.

Technical Field

The invention relates to the field of analysis devices, in particular to a splash-proof device of a reflux extraction device.

Background

Reflux extraction is a common method of drug extraction. The reflux method is a method of extracting medicinal components with volatile organic solvent such as ethanol, heating and distilling the leachate, condensing the volatile solvent after distilling, and repeatedly refluxing the volatile solvent into the leacher to extract medicinal materials, wherein the steps are repeated until the effective components are completely extracted by reflux.

The reflux extraction pipe is a device for implementing a reflux extraction method, and generally comprises a condensation pipe and a reflux pipe, wherein the condensation pipe is sleeved outside the reflux pipe and is used for introducing cold water so as to take away heat of the reflux pipe. During the use, be connected to the beaker with the lower extreme of back flow, the medicinal material etc. are placed in the beaker, heat the beaker, and the organic solvent can extract effective substance evaporation and get into the back flow, and steam meets the condensation knot in the back flow pipe, flows back downwards under the action of gravity, gets back to in the beaker again.

Because during the backward flow, the liquid temperature of condensation is lower, directly drips into the beaker in, can cause the liquid in the beaker to explode and boil, and the explosion boiling can lead to the extract to be splashed to the back flow. On one hand, the extract to be extracted is attached to the inner wall of the reflux pipe, so that the effective components cannot be fully extracted, the final experimental result is influenced, and the experimental result is inaccurate; on the other hand, the extract is attached to the inner wall of the return pipe, and is not easy to clean after being dried, so that the subsequent other time is polluted.

Disclosure of Invention

The invention provides a splash-proof device of a reflux extraction device, which can solve the problem of poor precision in reflux extraction analysis in the prior art.

The utility model provides a backward flow extraction element's splashproof device, includes the filter screen, the filter screen is used for installing to the lower tip of back flow, the center department of filter screen is protruding downwards.

Preferably, the filter screen is hemispherical thin-walled structure, the peripheral circumference of filter screen evenly is provided with the elastic sheet, the elastic sheet with the internal diameter phase-match of back flow.

Preferably, still include the magnetic block, the elastic sheet is made for magnetic material, the magnetic block is fixed to the lower extreme outside of back flow pipe is used for adsorbing the filter screen.

Preferably, the magnetic block comprises a first semi-annular magnetic ring and a second semi-annular magnetic ring, the end of the first magnetic ring and the end of the second magnetic ring are arranged in an opposite manner, and when the first magnetic ring and the second magnetic ring are clasped at the lower end of the return pipe, a gap is formed between the end of the first magnetic ring and the end of the second magnetic ring.

Preferably, the first magnetic ring and the second magnetic ring are soft magnetic strips.

More preferably, the magnetic block is an electromagnet.

More preferably, the magnetic block is an electromagnet.

The invention provides a splash-proof device of a reflux extraction device, wherein a filter screen is arranged, so that an extract to be extracted driven by bumping can be sputtered on the filter screen, the refluxed liquid can not directly flow down under the action of surface tension and can flow to the lowest point along the filter screen and then drip, the center of the filter screen is downwards convex, so that the refluxed liquid can flow on the filter screen, the extract to be extracted is driven to the center of the filter screen, and then when the surface tension of the refluxed liquid is not enough to support the gravity of the liquid, the liquid can drive the extract to be extracted to drip into a beaker together for continuous extraction.

Drawings

FIG. 1 is a schematic view of a reflux extraction apparatus;

fig. 2 is a schematic structural diagram of a splash guard of the backflow extraction device provided by the invention;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

FIG. 4 is a schematic diagram of a strainer of the anti-splash device;

FIG. 5 is a front view of FIG. 4;

fig. 6 is a schematic view of the mounting structure of the magnetic block.

Description of reference numerals:

10. the device comprises a condensation pipe 101, a connecting part 11, a return pipe 20, a filter screen 21, an elastic sheet 30, a magnetic block 301, a first magnetic ring 302 and a second magnetic ring.

Detailed Description

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.