CN216847642U

CN216847642U - Food pesticide residue inspection instrument

Info

Publication number: CN216847642U
Application number: CN202220286678.0U
Authority: CN
Inventors: 赵义廷
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-06-28
Anticipated expiration: 2032-02-14

Abstract

The utility model discloses a food pesticide residue inspection instrument belongs to pesticide residue and detects technical field, including detecting the storehouse, the filter screen intussuseption is filled with filtering material, filters impurity in network management and the filtering material filtration parting fluid, and the parting fluid spills over to detecting the storehouse and detects pesticide residue through gas chromatography with the union coupling in the U type pipe, and the waste liquid washes the discharge through the water injection in the detection cabin, and two openings of U type pipe are the setting of a high level. The utility model discloses a food pesticide residue inspection instrument, it filters to filter the suspended solid impurity that network management and filtering material contained in to the parting liquid, the parting liquid after the filtration overflows to detecting the under-deck through the U type pipe, gas chromatography and mass spectrometry chromatograph carries out the pesticide residue to the parting liquid that overflows in detecting the under-deck and detects, need not the manual parting liquid of getting, avoid the manual suspended solid impurity that gets the liquid and bring in, it can filter suspended solid impurity in the parting liquid to filter network management and filtering material, improve detection efficiency and testing result.

Description

Food pesticide residue inspection instrument

Technical Field

The utility model relates to a pesticide residue detects technical field, in particular to food pesticide residue inspection instrument.

Background

Food pesticide residue detection is generally carried out by adopting a gas chromatograph-mass spectrometer;

the Chinese patent application No. CN201811152282.1, entitled pesticide residue detection method in Chimonanthus salicifolius fruit, is to take about 100g of Chimonanthus salicifolius fruit, wash and cut up the Chimonanthus salicifolius fruit, take three parts, 10g of each part, add 10mL of acetonitrile, 4g of sulfuric acid I and 1g of sodium chloride into each part, soak the mixture for 10min, centrifuge (11000rpm,10min) and take supernatant. 100g of activated carbon is treated with 1L of nitric acid with the concentration of 0.05mol/L at 70 ℃ for 50min and then dried at 100 ℃ for 10h for standby. Adding 30g of treated activated carbon and 300mg of magnesium sulfate into 3mL of supernatant, stirring and mixing for 30min, filtering by using a filter screen with a pore diameter of 10um, and performing gas chromatography and mass spectrometry on the supernatant. The gas chromatograph was equipped with a fused silica capillary column (i.e., DB-5, 30m inner diameter x 0.25 mm) coated with 5% phenyl and 95% methylpolysiloxane (thickness 0.25 μm). Setting the initial temperature of the gas chromatograph at 160 ℃ for 2 min; then heating to 220 ℃, wherein the heating rate is 3 ℃/min, and keeping for 3 min; finally reaching 280 ℃ and the heating rate of 5 ℃. The injector port and detector temperatures were set to 295 deg.c and 315 deg.c, respectively. The capillary column used in the gas chromatography-mass spectrometry is the same as that used for the gas chromatography analysis. The jet temperature of the gas chromatograph-mass spectrometer is set to be 270 ℃, and the temperatures of the ion source and the transmission line are respectively set to be 230 ℃ and 295 ℃; has the advantages that: by adopting the technical scheme, the active carbon prepared by the method is used for extracting and adsorbing polar and semi-polar organic acids and pigments in the chimonanthus salicifolius fruits in the pretreatment process, so that the interference on the detection of pesticide residues in the chimonanthus salicifolius fruits and the possible damage to analytical instruments in the follow-up process are greatly reduced. The method improves the accuracy and repeatability of detection and protects an analytical instrument;

in the practical application process, the supernatant is taken out from the separator and put into the detection cabin of the gas chromatograph-mass spectrometer for detection, and the supernatant has suspended impurities when being taken out manually, so that the detection result has deviation, the manual liquid taking is troublesome, and the efficiency is not high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a food pesticide residue inspection instrument, can effectively solve the problem that proposes in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a food pesticide residue inspection instrument comprises a separation liquid cylinder and a detection bin, wherein the separation liquid cylinder is communicated with a centrifugal machine through a pipeline;

the lower end of the separation liquid cylinder is provided with a filtering type connecting pipeline, and an opening at the other upper end of the filtering type connecting pipeline is communicated with the detection bin;

the filtration formula connecting tube includes U type pipe, first connecting piece, second connecting piece, filters network pipe and filtering material, and the lower extreme that a separation liquid section of thick bamboo and detection storehouse is equipped with the U type pipe, and the horizontal pipe in bottom of U type pipe extends the position extension pipe, the end of extension pipe is equipped with first connecting piece, and first connecting piece is connected with the second connecting piece through the fastener, the second connecting piece is equipped with the filtration network pipe towards the terminal surface of horizontal pipe central point, and filters the intussuseption and pack and have filtering material, filter network pipe and filtering material filter impurity in the separation liquid, and the separation liquid spills over to detecting the storehouse and passes through gas chromatography for the use of gas chromatography and determine pesticide residue in the U type pipe, detects the interior waste liquid of storehouse and separation liquid section of thick bamboo and washes the discharge through the water injection, and two openings of U type pipe are the setting of a high one.

The U-shaped pipe is connected with the separation liquid cylinder and the detection bin through sealing pieces, the U-shaped pipe is flush with the bottom of the detection bin, and a plug is arranged at the joint of the detection bin and the U-shaped pipe;

the first connecting piece and the second connecting piece are arranged in a sealing mode through a sealing ring, the second connecting piece is arranged in a ladder platform shape, and a protruding part of the second connecting piece is embedded into an extending pipe of the U-shaped pipe;

the filter net pipe is detachably connected with the second connecting piece, the first connecting piece is connected with the second connecting piece through bolts, the aperture of the filter net pipe is 5-16 microns, and the filter material is filter cotton;

the filter net pipe and the second connecting piece are fixed through bolts;

wherein, the filter net pipe and the second connecting piece are fixed through a circular hoop.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses in, filter network management and filtering material and filter the suspended solid impurity that contains in to the parting liquid, the parting liquid after the filtration overflows to detecting the under-deck through U type pipe, and gas chromatography and mass spectrometry chromatograph carries out pesticide residue to the parting liquid that overflows in detecting the under-deck and detects, need not the manual parting liquid of getting, avoids the manual suspended solid impurity that gets the liquid and bring in, filters network management and filtering material and can filter suspended solid impurity in the parting liquid, improves detection efficiency and testing result.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a structural diagram of the filtering type connecting pipeline of the present invention;

FIG. 3 is a front cross-sectional view of the filtering type connecting pipe of the present invention;

fig. 4 is an exploded view of the filtering type connecting pipe according to the present invention.

In the figure: 1. a separation liquid cylinder; 2. a filter type connecting pipeline; 201. a U-shaped pipe; 202. a first connecting member; 203. a second connecting member; 204. filtering the network management; 205. a filter material; 3. and (6) detecting the bin.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-4, a food pesticide residue inspection instrument comprises a separation liquid cylinder 1 and a detection bin 3, wherein the separation liquid cylinder 1 is communicated with a centrifuge through a pipeline;

the lower end of the separation liquid cylinder 1 is provided with a filtering type connecting pipeline 2, and an opening at the other upper end of the filtering type connecting pipeline 2 is communicated with the detection bin 3;

the filtering type connecting pipeline 2 comprises a U-shaped pipe 201, a first connecting piece 202, a second connecting piece 203, a filtering net pipe 204 and a filtering material 205, the lower ends of the separating liquid cylinder 1 and the detection bin 3 are provided with the U-shaped pipe 201, the bottom of the U-shaped pipe 201 is provided with an extending pipe at the extending part of the transverse pipe, the end head of the extending pipe is provided with the first connecting piece 202, the first connecting piece 202 is connected with the second connecting piece 203 through a fastener, the end face of the second connecting piece 203 towards the central point of the transverse pipe is provided with the filtering net pipe 204, the filtering net pipe 204 is filled with the filtering material 205, the filtering net pipe 204 and the filtering material 205 filter impurities in the separating liquid, the separating liquid in the U-shaped pipe 201 overflows to the detection bin 3 and is detected by a gas chromatograph for gas chromatography, waste liquid in the detection bin 3 and the separating liquid cylinder 1 is flushed and discharged, two openings of the U-shaped pipe 201 are arranged in a high-low mode, the end head with the higher opening of the U-shaped pipe 201 is connected with the separating liquid cylinder 1, the lower end of the U-shaped pipe 201 is connected with the detection bin 3;

the U-shaped pipe 201 is connected with the separation liquid cylinder 1 and the detection bin 3 through sealing parts, the U-shaped pipe 201 is flush with the bottom of the detection bin 3 in a cabin, a plug is arranged at the joint of the detection bin 3 and the U-shaped pipe 201, the first connecting piece 202 and the second connecting piece 203 are arranged in a sealing mode through sealing rings, the second connecting piece 203 is arranged in a ladder-shaped mode, a protruding part of the second connecting piece 203 is embedded into an extending pipe of the U-shaped pipe 201, the filter net pipe 204 is detachably connected with the second connecting piece 203, the first connecting piece 202 and the second connecting piece 203 are connected through bolts, the aperture of the filter net pipe 204 is 5-16 um, and the filter material 205 is filter cotton; when the device is used, the separation liquid cylinder 1 is communicated with the detection bin 3 through the filtering type connecting pipeline 2, the separation liquid in the separation liquid cylinder 1 enters the U-shaped pipe 201, the filtering net pipe 204 and the filtering material 205 are arranged in the transverse pipe of the U-shaped pipe 201, when suspended impurities contained in the separation liquid pass through the filtering net pipe 204 and the filtering material 205, the suspended impurities contained in the separation liquid are filtered by the filtering net pipe 204 and the filtering material 205, the filtered separation liquid overflows into the detection bin 3 through the U-shaped pipe 201, the gas chromatograph is used for detecting pesticide residues in the separation liquid overflowing from the detection bin 3, the separation liquid does not need to be taken manually, the suspended impurities brought by the manually-taken liquid are avoided, the filtering net pipe 204 and the filtering material 205 can filter the suspended impurities in the separation liquid, the detection efficiency and the detection result are improved, water is injected into the detection bin 3 and the separation liquid cylinder 1, and clean water enters the U-shaped pipe 201, and then discharged from the bottom extension pipe of the U-shaped pipe 201, thereby realizing the discharge of waste liquid.

The filter mesh tube 204 and the second connecting piece 203 are fixed through bolts.

The filter mesh tube 204 and the second connector 203 are fixed by a circular hoop.

It is noted that, herein, relational terms such as first and second (a, b, etc.) and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a food pesticide residue inspection instrument, includes a separation liquid section of thick bamboo (1) and detects storehouse (3), a separation liquid section of thick bamboo (1) is linked together its characterized in that through pipeline and centrifuge: the lower end of the separation liquid cylinder (1) is provided with a filtering type connecting pipeline (2), and an opening at the other upper end of the filtering type connecting pipeline (2) is communicated with the detection bin (3);

the filtration type connecting pipeline (2) comprises a U-shaped pipe (201), a first connecting piece (202), a second connecting piece (203), a filtration network pipe (204) and a filtration material (205), the lower ends of the separation liquid cylinder (1) and the detection bin (3) are provided with the U-shaped pipe (201), the bottom of the U-shaped pipe (201) is provided with an extension pipe at the transverse pipe extension part, the end head of the extension pipe is provided with the first connecting piece (202), the first connecting piece (202) is connected with the second connecting piece (203) through a fastening piece, the end face of the second connecting piece (203) facing the central point of the transverse pipe is provided with the filtration network pipe (204), the filtration network pipe (204) is filled with the filtration material (205), the filtration network pipe (204) and the filtration material (205) filter impurities in the separation liquid, and the separation liquid in the U-shaped pipe (201) overflows to the detection bin (3) and detects pesticide residues through a gas chromatography for mass spectrometry, waste liquid in the detection bin (3) and the separation liquid cylinder (1) is flushed and discharged through water injection, and two openings of the U-shaped pipe (201) are arranged in a high-low mode.

2. The food pesticide residue inspection instrument according to claim 1, wherein: u type pipe (201) are connected through sealing member and separation liquid section of thick bamboo (1) and detection storehouse (3), and U type pipe (201) and the under-deck bottom parallel and level in detection storehouse (3), it is equipped with the end cap to detect storehouse (3) and U type pipe (201) junction.

3. The food pesticide residue inspection instrument according to claim 2, wherein: the first connecting piece (202) and the second connecting piece (203) are arranged in a sealing mode through sealing rings, the second connecting piece (203) is arranged in a ladder platform shape, and the protruding portion of the second connecting piece (203) is embedded into the extending pipe of the U-shaped pipe (201).

4. A food pesticide residue testing instrument as claimed in any one of claims 1 to 3, wherein: the filter net pipe (204) is detachably connected with the second connecting piece (203), the first connecting piece (202) is connected with the second connecting piece (203) through bolts, the aperture of the filter net pipe (204) is 5-16 um, and the filter material (205) is filter cotton.

5. The food pesticide residue inspection instrument according to claim 4, wherein: the filter net pipe (204) and the second connecting piece (203) are fixed through bolts.

6. The food pesticide residue inspection instrument according to claim 4, wherein: the filter net pipe (204) and the second connecting piece (203) are fixed through a circular hoop.