CN207396165U - A kind of device for solid sample extraction - Google Patents

Abstract

The utility model discloses a device for extracting solid samples, aiming to provide a device for extracting solid samples with high extraction efficiency. It includes a ground-mouthed conical extraction bottle with a suction filter opening on the upper part, a beam-mouth filter bag with a closing pull wire at the mouth, snap-fitted with the mouth of the ground-mouth cone-shaped extraction bottle, and a bottle mouth buckle for fixing the beam-mouth filter bag , a ground stopper adapted to the mouth of the ground-mouth conical extraction bottle, and a flat-bottomed glass funnel with several filter holes at the bottom; the beam mouth filter bag is made of degreasing filter paper; the outer wall of the flat-bottomed glass funnel has The frosted layer fits well with the mouth of the ground conical extraction bottle. The utility model omits the step of dumping and transferring the mixture of the residue and the extracting liquid, greatly saving manpower, material resources and test time; and because the operation is simple, the extraction efficiency can be effectively improved.

Description

A device for extracting solid samples

technical field

The utility model relates to the technical field of chemical analysis pretreatment experimental devices, in particular to a device for extracting solid samples.

Background technique

Extraction is a method of soaking a solid sample with a liquid solvent to extract the solute. With the development of industry and the improvement of people's living standards, the application fields of solid sample extraction are becoming more and more extensive, such as: making tea, frying Chinese medicine, extracting sugar from beets, extracting edible oil from plant seeds, extracting oil from various plants Chinese herbal medicine preparations, instant coffee, food seasonings and the production of food additives, etc.

When using a solvent to extract the target substance in the solid sample, after the extraction is completed, it is necessary to separate the solid sample residue from the extraction solution through filtration, suction filtration, etc., and then proceed to the next step. In the process of filtration and suction filtration, it is necessary to pour the mixture of the solid sample residue and the extraction solution in the extraction bottle into the glass funnel and Buchner funnel with filter paper in advance, and then wash the solid sample residue and the extraction bottle with solvent to recover the attached Soluble components on the residue and extraction bottle, and the filtered extract is collected in a collection bottle for subsequent purification and concentration. It can be seen that the process of filtration and suction filtration requires the use of glass funnels, Buchner funnels and collection bottles. The use of these test instruments may introduce new impurities. Splashing, thereby interfering with and affecting the analysis and detection of the target. Moreover, both glass funnels and Buchner funnels used in filtration and suction filtration need to place filter paper matching the size of the funnel on the funnel, and the cutting and placement of the filter paper increases the operational difficulty and time of the test. When the analysis task is heavy, there are many samples to be tested, and the batch detection is performed, the separation step of the residue after solid sample extraction and the extraction liquid is not only cumbersome to operate, but also requires a lot of time and manpower, which seriously affects the efficiency of detection; and may be due to impurities The introduction and splashing of the extract directly affect the repeatability of the detection work and the stability of the detection data.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a device for solid sample extraction that is simple to operate, saves time and effort, can effectively improve extraction efficiency, and has good stability of detection data.

In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

A device for extracting solid samples, comprising a ground-mouthed conical extraction bottle with a suction filter opening on the upper part, a beam-mouthed filter bag with a closing pull wire at the mouth, which is clamped with the mouth of the ground-mouthed conical extraction bottle for fixing The bottle mouth buckle of the beam filter bag, the ground plug matching the bottle mouth of the grinding cone extraction bottle, and the flat bottom glass funnel with several filter holes at the bottom; the beam filter bag is made of degreasing filter paper; The outer wall of the flat-bottomed glass funnel has a frosted layer, and fits with the mouth of the conical extraction bottle with a ground mouth.

Preferably, the buckle on the mouth of the bottle adopts a plastic ring or a rubber ring with an inverted L-shaped cross section.

Preferably, the buckle of the bottle mouth adopts a plastic ring or a rubber ring with a U-shaped cross section.

Preferably, the bottle mouth buckle adopts a split ring.

Preferably, nylon rope, cotton rope or hemp rope are used for the closing pull cord.

Compared with the prior art, the utility model has the following advantages:

(1) The utility model overcomes the cumbersome operation of separating the extracted solid sample residue from the extraction liquid when extracting the target substance in the solid sample, which consumes manpower, material resources and time, and seriously affects the detection work. Efficiency, and it may be due to the introduction of impurities and the splashing of extracts that directly affect the repeatability of the detection work and the stability of the detection data.

(2) The utility model realizes the direct and simple separation of the solid sample residue and the extraction liquid after the solid sample is extracted, and the separation of the solid sample residue and the extraction liquid can be completed only by using a flat-bottomed glass funnel and an extraction conical flask, reducing the The introduction of new impurities; the separation process does not need to dump the mixture of the transfer residue and the extract, which effectively prevents the splash of the extract, which is conducive to the repeatability of the detection work and the stability of the detection data; Put the small bag with solid sample residue into the flat-bottomed glass funnel, and then connect the vacuum pump to complete the separation of the residue and the extract. The filter bag with the beam mouth placed on the flat-bottomed glass funnel can play the role of isolation of the filter paper, so there is no need to cut the filter paper and placement, and saves the step of dumping and transferring the mixture of residue and extract, which greatly saves manpower, material resources and test time; due to the simple operation, it can effectively improve the extraction efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative work.

Fig. 1 is the structural representation of the utility model.

In the figure: 1- conical extraction bottle with ground mouth; 2- filter bag with beam mouth; 3- bottle mouth buckle; - filter holes.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The device for solid sample extraction shown in Fig. 1 comprises the conical extraction flask 1 with a ground mouth with a suction filter opening 5 on the top, the filter bag 2 with a beam opening with a pull wire 4 at the mouth, and 1 conical extraction flask with a ground mouth Mouth clamping, bottle mouth buckle 3 for fixing bundle mouth filter bag 2, ground mouth stopper 6 suitable for the mouth of ground mouth conical extraction bottle 1, and flat bottom glass funnel 7 with several filter holes 8 at the bottom ; The mouth filter bag 2 is made of degreasing filter paper;

The bottle mouth buckle 3 preferably adopts a plastic ring or a rubber ring with an inverted L-shaped cross section. Obviously, the bottle mouth buckle 3 can also use a plastic ring or a rubber ring with a U-shaped cross section, or a commonly used ring such as a split ring. The bottle mouth fixing mechanism.

Said backguy 4 can adopt nylon rope, cotton rope or hemp rope etc.

The use process of the present utility model is as follows:

1. Fix the beam mouth filter bag 2 to the mouth of the ground conical extraction bottle 1 through the bottle mouth buckle 3;

2. According to the specific requirements of the detection method, a certain amount of sample to be tested is weighed in the mouth filter bag 2;

3. After the sample is weighed, unfasten the buckle 3 of the bottle mouth, remove the filter bag 2 from the mouth of the conical extraction bottle 1, and pull the closing cable 4 to close the mouth of the filter bag 2 tight;

4. Put the beam mouth filter bag 2 with the tightened bag mouth into the bottom of the ground-mouth conical extraction bottle 1, hang the closing pull wire 4 on the mouth of the ground-mouth conical extraction bottle 1, and place the end of the pull wire in the ground-mouth conical extraction bottle 1 outside;

5. According to the specific requirements of the detection method, add a certain amount of extractant in the ground-mouth conical extraction bottle 1;

6. Plug the ground-mouth conical extraction bottle 1 with the ground-mouth plug 6;

7. Carry out sample extraction according to the specific requirements of the detection method;

8. After the sample is leached, remove the ground plug 6, and take out the beam filter bag 2 from the ground conical extraction bottle 1 through the closing pull wire 4;

9. Place the beam opening filter bag 2 in the flat-bottomed glass funnel 7, place the flat-bottomed glass funnel 7 on the bottleneck of the ground-mouthed conical extraction bottle 1, and make the flat-bottomed glass funnel 7 connect with the ground-mouthed conical extraction bottle 1. Mouth fit tightly;

10. Open the mouth of the filter bag 2 with the beam mouth, and make the bottom of the filter bag 2 with the beam mouth covered with the bottom of the flat-bottomed glass funnel 7;

11. Connect the suction filter port 5 to the vacuum pump through a hose;

12. Turn on the vacuum pump, and after the extraction solution in the beam mouth filter bag 2 is suction-filtered into the ground-mouth conical extraction bottle 1, wash the solid sample residue in the beam mouth filter bag 2 with a small amount of extractant, and reclaim the residue attached to the residue. Soluble components;

13. After the suction filtration is completed, unplug the 5 hoses at the suction filter port, turn off the vacuum pump, and remove the flat-bottomed glass funnel 7 and the filter bag 2 containing the solid sample residue from the mouth of the ground-mouth conical extraction bottle 1 .

The utility model realizes the direct and simple separation of the solid sample residue and the extraction liquid after the solid sample is extracted, and the separation of the solid sample residue and the extraction liquid can be completed only by using a flat-bottomed glass funnel and a conical flask for extraction, reducing the risk of new impurities Introduction; the separation process does not need to dump the mixture of the transfer residue and the extract, which effectively prevents the splash of the extract, which is conducive to the repeatability of the detection work and the stability of the detection data; after the extraction of the solid sample is completed, only the solid sample Put the small bag of residue into the flat-bottomed glass funnel, and then connect the vacuum pump to complete the separation of the residue and the extract. The beam mouth filter bag can be placed on the flat-bottomed glass funnel to isolate the filter paper, so there is no need to cut and place the filter paper. Moreover, the step of dumping and transferring the mixture of residue and extract is omitted, which greatly saves manpower, material resources and test time.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (5)

1. a kind of device for solid sample extraction, it is characterised in that：There is suction filtration mouth including top（5）Ground taper carry Take bottle（1）, oral area is with closing in bracing wire（4）Beam make a slip of the tongue filter bag（2）, with ground taper extraction flask（1）Bottleneck is clamped, for solid Determine beam to make a slip of the tongue filter bag（2）Bottleneck buckle（3）, with ground taper extraction flask（1）The grinding port plug that bottleneck is adapted（6）And bottom Portion has several filter hole（8）Flat bottom glass funnel（7）；The beam is made a slip of the tongue filter bag（2）It is made of fat-free filter paper；It is described flat Bottom glass funnel（7）Lateral wall have frosted layer, and with ground taper extraction flask（1）Bottleneck mutually agree with.

2. according to claim 1 for the device of solid sample extraction, it is characterised in that：The bottleneck buckle（3）Using Section is in the plastic hoop or rubber ring of inverted L-shaped.

3. according to claim 1 for the device of solid sample extraction, it is characterised in that：The bottleneck buckle（3）Using The plastic hoop or rubber ring that section takes the shape of the letter U.

4. according to claim 1 for the device of solid sample extraction, it is characterised in that：The bottleneck buckle（3）Using Split ring.

5. for the device of solid sample extraction according to claim 1-4 is any, it is characterised in that：The closing in bracing wire （4）Using nylon rope, cotton cord or the rope made of hemp.