CN218212248U

CN218212248U - Pesticide residue extraction element

Info

Publication number: CN218212248U
Application number: CN202222398869.9U
Authority: CN
Inventors: 张淑霞; 李轲; 徐丹; 张守杰; 王向军; 田亚; 张利芬
Original assignee: Zhengzhou Customs Technology Center
Current assignee: Zhengzhou Customs Technology Center
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-01-03
Anticipated expiration: 2032-09-09

Abstract

The utility model relates to a pesticide residue extraction device, which effectively solves the problems of incomplete pesticide residue extraction and complex operation; the technical scheme for solving the problem is that the device comprises a box body, wherein a vertical rod is arranged in the box body and can swing left and right in a reciprocating manner; the upper end of the vertical rod is provided with a platform, and the platform is provided with a left buckle and a right buckle; the left and right buckles are respectively clamped with a test tube, and the openings of the left and right test tubes are opposite; the inside cartridge of controlling two test tubes has the sleeve, and both ends are provided with the filter screen about the telescopic, and the filter screen can be dismantled, the utility model discloses two test tubes make a round trip to reverse about utilizing, realize that buffer solution to the washing away of sample, can be abundant dissolve with wash away the incomplete farming on sample surface.

Description

Pesticide residue extraction element

Technical Field

The utility model relates to a medicine inspection field, especially a pesticide residue extraction element.

Background

In recent years, when pesticide residues in environmental organisms are analyzed, the sample extraction method commonly adopted comprises the following steps: solvent Extraction (SE) and Supercritical Fluid Extraction (SFE), and the purification method comprises the following steps: the method comprises the following steps of Solid Phase Extraction (SPE), matrix Solid Phase Dispersion (MSPD), solid Phase Microextraction (SPME), stirring adsorption solid phase extraction (SBSE) and the like, wherein common samples can be used for instrument analysis through two processes of extraction and purification, a solvent extraction method needs to put the samples into a solvent for oscillation, the prior art generally adopts manual oscillation and then settlement extraction, and the manual oscillation is troublesome; at present, some electric oscillation devices exist, for example, CN211216444U is a universal oscillator for sample pesticide residue pretreatment; this kind of vibrate equipment structure is numerous and diverse, and solution and little massive sample are together removed during the vibration, and the sample is limited by the dynamics of scouring to vibrate back sample and be littleer cubic by the breakage easily, be difficult for extracting solution, need follow-up solitary operation such as filtering. Therefore, there is a need for a more convenient and faster oscillation extraction device.

Disclosure of Invention

To the above situation, for solving the problem that exists among the prior art, the utility model aims at providing a pesticide residue extraction element, can effectively solve the incomplete problem of extracting complex operation of incomplete, the incomplete problem of incomplete extraction of pesticide residue.

The technical scheme for solving the problem is that the device comprises a box body, wherein a vertical rod is arranged in the box body and can swing left and right in a reciprocating manner; the upper end of the vertical rod is provided with a platform, and the platform is provided with a left buckle and a right buckle; the left and right buckles are respectively clamped with a test tube, and the openings of the left and right test tubes are opposite; the inside cartridge of controlling two test tubes has the sleeve, and both ends are provided with the filter screen about the sleeve, and the filter screen can be dismantled.

The lower end of the vertical rod is hinged inside the box body, a first gear is arranged at the hinged point of the vertical rod, an incomplete gear meshed with the first gear is arranged in the box body, and the incomplete gear is driven by a motor to rotate; a reset torsion spring is arranged between the vertical rod and the box body.

And a plurality of rubber rings are uniformly distributed on the outer edge surface of the sleeve.

The left end and the right end of the sleeve are provided with annular grooves, and the circumference of the filter screen is provided with a rubber band.

The utility model discloses the benefit: 1. the left test tube and the right test tube are reversed back and forth, so that the buffer solution can wash the sample, and pesticide residues on the surface of the sample can be fully dissolved and washed away.

2. Can directly carry out the separation of sample and buffer, do not need solitary filtration operation, improve detection efficiency.

Drawings

Fig. 1 is a front view partially sectional view of the present invention.

Fig. 2 is a front sectional view of the test tube of the present invention.

Fig. 3 is a front sectional view (exploded state) of the test tube of the present invention.

Fig. 4 is a partially enlarged view of a portion a in fig. 3.

Fig. 5 is a left side view of the buckle.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1 to 5, the utility model comprises a box body 1, wherein a vertical rod 2 is arranged in the box body 1, and the vertical rod 2 can swing back and forth left and right; the upper end of the vertical rod 2 is provided with a platform 3, and the platform 3 is provided with a left buckle 4 and a right buckle 4; the left buckle 4 and the right buckle 4 are respectively provided with a test tube 5 in a clamping way, and the openings of the left test tube 5 and the right test tube 5 are opposite; the inside cartridge of controlling two test tubes 5 has sleeve 6, and both ends are provided with filter screen 7 about sleeve 6, and filter screen 7 can be dismantled.

In order to realize the swing of the vertical rod 2, the lower end of the vertical rod 2 is hinged inside the box body 1, a first gear 8 is arranged at the hinged point of the vertical rod 2, an incomplete gear 9 meshed with the first gear 8 is arranged in the box body 1, and the incomplete gear 9 is driven by a motor to rotate; a reset torsion spring is arranged between the vertical rod 2 and the box body 1.

In order to realize that the sleeve 6 is clamped in the test tube 5, a plurality of rubber rings 10 are uniformly distributed on the outer edge surface of the sleeve 6.

In order to enable the filter screen 7 to be conveniently installed at the left end and the right end of the sleeve 6, annular grooves 11 are formed in the left end and the right end of the sleeve 6, and rubber bands 12 are arranged on the circumference of the filter screen 7.

When the utility model is used, a representative vegetable sample is selected at first, the soil on the surface of the sample is wiped off, the vegetable sample is cut into 1cm square fragments, and a sample 1g is placed in the sleeve 6; then, mounting filter screens 7 at two ends of the sleeve 6, and when the filter screens 7 are mounted, clamping the filter screens 7 in annular grooves 11 at the end parts of the sleeve 6 through rubber bands 12 at the circumferences of the filter screens 7 to fix the filter screens 7; the sample will then be retained inside the sleeve 6.

Then, 5ml of buffer solution is added into one test tube 5, one end of the sleeve 6 is inserted into the test tube 5, and then the other test tube 5 is sleeved at the other end of the sleeve 6; see the form shown in fig. 2. The two test tubes 5 together with the sleeve 6 can then be fixed to the platform 3. The test tube 5 is clamped by a buckle 4 on the platform 3.

Then, the motor can be started, and the motor can drive the platform 3 to swing in a reciprocating manner, and the specific principle is that after the incomplete gear 9 rotates clockwise, when the toothed part of the incomplete gear 9 is meshed with the first gear 8, the first gear 8 can be driven to rotate anticlockwise; when the toothless part of the incomplete gear 9 corresponds to the first gear 8, the first gear 8 is reset clockwise by the reset torsion spring. This reciprocation realizes the shaking of the platform 3.

Through the shaking of the platform 3, the buffer solution in the test tubes 5 flows back and forth left and right, namely flows back and forth in the two test tubes 5; while the sleeve 6 is in the middle position of the two test tubes 5; therefore, when flowing, the buffer solution passes through the interior of the sleeve 6 and washes the sample in the sleeve 6; so that pesticide residues on the surface of the sample are washed away and are dissolved into the buffer solution. On the one hand, the pesticide residues on the sample can be thoroughly extracted through chemical absorption and on the other hand through flushing of water flow with impact force.

After shaking for 3-5 minutes, stopping swinging; platform 3 can resume to vertical state under the effect of torsional spring, keeps test tube 5 to be in the state about promptly, listens the stationary back of short time, under the effect of gravity, fuses that the incomplete buffer solution of farming can flow to being in the test tube 5 of bottom. The entire device can then be removed from the platform 3 and the test tube 5 and sleeve 6 located above are removed, resulting in a buffer-only test tube 5. Then, a proper amount of color developing agent can be directly added into the test tube 5 for color development; alternatively, the buffer in the test tube 5 is added to a developer to develop color.

Test tube 5, sleeve 6 after handling, can wash the back, repetitious usage, and filter screen 7 can be according to material and effect, single or repetitious usage.

This device seals the sample in the inside of sleeve 6 through setting up sleeve 6, utilizes two test tubes 5 about, makes a round trip to reverse, realizes that buffer solution is to the washing away of sample, and incomplete with the farming that washes away the sample surface that can be abundant.

This device can directly carry out the separation of sample and buffer after the oscillation, does not need solitary filtration operation, has improved detection efficiency.

This device utilizes the motor to realize automatic vibrations, and the frequency and the dynamics of shaking can be adjusted to speed isoparametric through the regulation motor, have alleviateed the manpower, have improved the incomplete extraction ability of farming.

Claims

1. A pesticide residue extraction device comprises a box body (1), and is characterized in that a vertical rod (2) is arranged in the box body (1), and the vertical rod (2) can swing back and forth left and right; the upper end of the vertical rod (2) is provided with a platform (3), and the platform (3) is provided with a left buckle and a right buckle (4); the left buckle and the right buckle (4) are respectively provided with a test tube (5), and the openings of the left test tube (5) and the right test tube (5) are opposite; the inside cartridge of controlling two test tubes (5) has sleeve (6), and both ends are provided with filter screen (7) about sleeve (6), and filter screen (7) can be dismantled.

2. The pesticide residue extraction device as claimed in claim 1, wherein the lower end of the vertical rod (2) is hinged inside the box body (1), a first gear (8) is installed at the hinged point of the vertical rod (2), an incomplete gear (9) meshed with the first gear (8) is installed in the box body (1), and the incomplete gear (9) is driven by a motor to rotate; a reset torsion spring is arranged between the vertical rod (2) and the box body (1).

3. The pesticide residue extraction device of claim 1, wherein the outer edge surface of the sleeve (6) is uniformly provided with a plurality of rubber rings (10).

4. The pesticide residue extraction device of claim 1, wherein the sleeve (6) is provided with annular grooves (11) at the left and right ends, and the circumference of the filter screen (7) is provided with a rubber band (12).