Grinding filter used for biological teaching

Abstract

The invention discloses a grinding filter used for biological teaching. The grinding filter comprises a grinding bar, a top cover and an outer sleeve. The grinding filter is characterized in that thegrinding bar is arranged in the outer sleeve and is of a hollow structure, a plurality of liquid permeating holes are formed in a bar body of the grinding bar, a grinding head is arranged at the lowerend of the grinding bar, the top cover is composed of an upper top cover body and a lower top cover body, the lower top cover body is arranged at the upper end of the grinding bar, a lower liquid outlet is formed in the lower top cover body, a plurality of inserting holes are formed in the upper surface of the lower top cover body, the upper top cover body is arranged at the upper end of the lower top cover body, a filter net is mounted between the upper top cover body and the lower top cover body, a plurality of inserting strips are arranged on the lower surface of the upper top cover body,an upper liquid outlet is formed in the upper top cover body, and a liquid outlet cover is arranged on the upper liquid outlet. When the grinding filter is used for experiments, operation is easy andconvenient, using by a student is easy, an extracting solution can be extracted without using other devices, and the experiment efficiency is effectively improved.

Description

technical field [0001] The invention belongs to the field of biology teaching equipment, and in particular relates to a grinding filter for biology teaching. Background technique [0002] In biology teaching, there are many experiments that need to extract soluble components in biological materials. In order to facilitate the experiment, an experimental instrument that integrates two operations of grinding and filtering is needed, which can be carried out simultaneously during the grinding process of materials. Filtration, the application number is 200620158416.7, the patent name is the invention patent of grinding filter, this invention has three functions of solid crushing, stirring extraction and solid-liquid separation, and the mechanism is simple, easy and fast to operate, and can effectively prevent solvent volatilization. However, while the invention achieves the filtering effect, it is necessary to manually clamp a filter screen between the grinding rod and the grind...

AI Technical Summary

Problems solved by technology

However, while the invention achieves the filtering effect, it is necessary to manually clamp a filter screen between the grinding rod and the grinding head. The grinding cover on the top of the grinding rod uses a rubber dropper to suck out the filtrate in the outer sleeve. During this process, students are likely to cause damage to the rubber dropper and affect the efficiency of the experiment. In view of the above problems, it is necessary to design a simple-to-use Convenient, high-efficiency biological teaching grinding filter

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