CN112345331A

CN112345331A - Solid phase extraction equipment for food detection and separation method

Info

Publication number: CN112345331A
Application number: CN202011304921.9A
Authority: CN
Inventors: 黄彦子
Original assignee: Anhui Xijia Information Technology Co ltd
Current assignee: Anhui Xijia Information Technology Co ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-02-09

Abstract

The invention discloses a solid phase extraction device for food detection and a separation method, comprising a driving component, an installation containing component, a feeding component, a control component, a telescopic component and a solid phase extraction component, wherein when the solid phase extraction for food detection is carried out, a first reagent cylinder and a second reagent cylinder are installed on an installation base plate only by utilizing the magnetic matching of a slot and an inserted rod, required reagents are carried in the reagent cylinders, the installation containing component is driven by the driving component to move, food samples are controlled to be fed, substances to be detected are separated and substances to be detected are collected sequentially through the control component, the automatic separation of extraction media and liquid can be realized without manual operation, meanwhile, a device automatically operates and extracts through various components, the efficiency is higher, and the arrangement of the telescopic component enables an extraction medium disk to enter the reagent cylinders in a rotating manner, has certain stirring effect on liquid, and improves the extraction and dissolution effects of the substance to be detected.

Description

Solid phase extraction equipment for food detection and separation method

Technical Field

The invention relates to the field of solid phase extraction for food detection, in particular to solid phase extraction equipment for food detection and a separation method.

Background

Food, which is generally composed of carbohydrates, fats, proteins or water, can provide a nutrient or pleasurable substance to a human or organism by eating or drinking, and as the living standard and health consciousness of people increase, how to improve the quality of food, the content of sugar and fat, reduce the residue of harmful substances in food, ensure the quality and safety of food is an important task in the current food production and processing industry, this is a need for food testing, which in the broad sense is a discipline for studying and assessing food quality and its changes, based on several basic theories of physics, chemistry, biochemistry and various technologies, according to established technical standards, such as international and national food hygiene/safety standards, the quality of the food raw materials, the auxiliary materials, the semi-finished products, the finished products and the byproducts is checked to ensure that the product quality is qualified. The food inspection contents comprise sensory detection of food, detection of nutrient components, additives and harmful substances in the food and the like.

The food inspection content is very rich, and comprises the analysis of food nutrient components, the analysis of pollutants in food, the analysis of food auxiliary materials and food additives, the food sensory evaluation and the like. The narrow-sense food inspection generally refers to the inspection of food quality by food inspection institutions according to the sanitary standards specified by the food sanitation laws of the people's republic of China, including the inspection of the characteristics, physical and chemical indexes and other sanitary indexes of the external package, the internal package, the marks, the shipping marks and the appearance of the commodity. The detection method mainly comprises a sensory detection method and a physicochemical detection method. The development of analytical chemistry provides an accurate and reliable analytical method for food safety testing. With the rapid development of scientific technology, food inspection technology has been able to achieve parts per million or even parts per billion accuracy.

The indexes of food inspection mainly comprise the analysis of general components of food, the analysis of trace elements, the analysis of pesticide residues, the analysis of veterinary drug residues, the analysis of mycotoxin, the analysis of food additives, the analysis of other harmful substances and the like. According to the characteristics of the tested item, the test of each index corresponds to a corresponding test method, with the progress of the technology, a solid phase extraction technology becomes a common technical means, the solid phase extraction is a sample pretreatment technology developed in recent years, the solid phase extraction technology is developed by combining a liquid-solid extraction column and a liquid chromatography technology and is mainly used for separating, purifying and concentrating samples, compared with the traditional liquid-liquid extraction method, the recovery rate of an analyte can be improved, the analyte and an interference component are more effectively separated, the sample pretreatment process is reduced, the operation is simple, time-saving and labor-saving, the principle is that a liquid sample solution passes through an adsorbent, the detected substance is retained, a proper strength solvent is selected to flush impurities, and then a small amount of solvent is used for rapidly eluting the detected substance, so that the purposes of rapid separation, purification and concentration are achieved. Interference impurities can be selectively adsorbed, so that the measured substance flows out; or adsorbing impurities and the substance to be detected simultaneously, and then selectively eluting the substance to be detected by using a proper solvent.

The current application number is CN201910645969.7, which relates to a high-precision bulk sugar detection device for food detection and a use method thereof, and comprises the following operation steps: step S1, extracting a sample; step S2, preprocessing; step S3, preparing standard solution; step S4, detecting by liquid chromatography; step S5, calculating the total sugar content; s6, calculating sugar content, the invention has the advantages that the sugar content in the grain is detected by a high performance liquid chromatography evaporative light scattering detection analysis method, the accuracy is improved, the processing speed is improved by crushing and stirring food samples, the reaction time is shortened, and the conversion rate of the sugar is improved.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides solid phase extraction equipment for food detection and a separation method.

In order to achieve the purpose, the invention provides the following technical scheme:

a solid phase extraction device for food detection comprises a base, wherein mounting rectangular grooves are symmetrically formed in two sides of the center of the top end of the base, a driving assembly is arranged on the base and comprises a sliding groove, two groups of sliding blocks, a screw rod, a movable driven gear, a servo motor and a movable main gear, a first protection frame is arranged on the side face of the base and comprises a first sealing plate and a first handle, a mounting and containing assembly is arranged on each sliding block and comprises a mounting base plate, a first reagent cylinder and a second reagent cylinder, two groups of inverted concave frame plates are symmetrically fixed in the center of the top end of the base and are different in height, a feeding assembly and a control assembly are arranged on the lower group of inverted concave frame plates, each feeding assembly comprises a hopper, a conveying pipe and an electromagnetic valve, each control assembly comprises an infrared emitter, a receiving plate, a controller and a first connecting wire, and the receiving plates and the electromagnetic valves are both connected with a transmission head, the other group of the higher inverted concave frame plates are provided with telescopic assemblies, the telescopic assemblies comprise a rotary servo motor, a rotary main gear, a rotary driven gear and a rotary shaft, the higher inverted concave frame plates are provided with second protection frames, the second protection frames comprise second sealing plates and second handles, solid-phase extraction assemblies are arranged on the side walls of the rotary shaft, the solid-phase extraction assemblies comprise telescopic threads, screw sleeves, connecting rods, mounting discs, mounting grooves, connecting columns, extraction medium discs and leakage holes, the mounting rectangular groove is internally provided with a protection side plate, the top end of the protection side plate is in screw connection with a first mounting plate and a second mounting plate, electrical boxes are arranged on the second mounting plates, and first connecting wires and the electrical boxes are connected with one another to provide power for the control assemblies.

Preferably, the installation moment groove is close to base top length edge setting, the spout setting is slightly less than the length of base at base top center and length, the slider slides in the spout and the top is higher than the base top, the screw rod screw thread runs through two sets of slider centers and rotates the setting at the spout both ends, the screw rod tip rotates and runs through the base and remove from the gear continuous, servo motor sets up in the base side, it links to each other to remove master gear and servo motor output, it is less than the diameter of removing from the gear to remove the master gear and remove from the diameter of gear meshing and removal master gear.

Preferably, the diameter of the installation chassis is greater than the length of the sliding block, the inner wall of the installation chassis is provided with a protective pad, the height of a first reagent cartridge is less than that of a second reagent cartridge, the horizontal distance between the centers of the two groups of inverted concave frame plates is equal to the horizontal distance between the centers of the two groups of sliding blocks, and the inverted concave frame plates are arranged between the two groups of installation rectangular grooves.

Preferably, the hopper setting runs through the setting of the concave type frame plate of falling at concave type frame plate top center and bottom, the conveying pipeline is installed in the hopper bottom and is set up with the hopper intercommunication, the solenoid valve sets up at conveying pipeline and hopper boundary position, the transmission head on the solenoid valve runs through the setting of conveying pipeline lateral wall, infrared emitter transmission position level of locating is higher than the horizontal plane of reagent section of thick bamboo top and is less than the horizontal plane of reagent section of thick bamboo top of locating No. two, the receiver plate is just setting up infrared emitter center, be provided with on the controller with transmission head complex interface, first electric wire and controller electric connection.

Preferably, the rotating servo motor is fixed at the top end of the inverted concave frame plate, the rotating master gear is arranged at the output end of the rotating servo motor, the rotating slave gear is meshed with the rotating master gear, the diameter of the rotating slave gear is larger than that of the rotating master gear, the rotating shaft penetrates through the center of the top end of the inverted concave frame plate in a rotating mode, and the bottom end of the rotating shaft is provided with a blocking disc.

Preferably, flexible screw thread setting is located the region of type of falling concave frame plate horizontal part bottom lower part at the pivot lateral wall, swivel nut and flexible screw thread screw-thread fit, the connecting rod is total four groups and the circumference evenly sets up at swivel nut bottom edge, the length of connecting rod equals the length of rope screw thread, the mounting disc is fixed in the connecting rod bottom, the mounting groove is seted up at mounting disc bottom center, the spliced pole is installed in the mounting groove and its highly be greater than the mounting groove degree of depth, spliced pole and mounting groove pass through the screw can dismantle the connection, the extraction medium dish is fixed in the spliced pole bottom, the small opening evenly sets up the region except that the mounting groove.

Preferably, a threaded hole is seted up at a set of lower type of falling concave frame plate top center, and the hopper is including round platform portion and cylinder portion, and cylinder portion lateral wall bottom is seted up with screw hole amount complex screw thread, and the height that highly equals the type of falling concave frame plate top of cylinder portion, and the horizontal plane that the conveying pipeline bottom was located is higher than the horizontal plane that No. two reagent section of thick bamboo tops were located, and the slot has been seted up at slider top center, and installation chassis bottom center is fixed with the inserted bar with slot complex, and the inserted bar is connected with slot magnetic fit.

Preferably, still including air-drying the subassembly, air-dry the subassembly including the air heater, the tuber pipe, pipe chute and blowing dish, the air heater sets up in the second bearer bar, the heat extension is two outlet structure and tuber pipe symmetry and sets up the two export tip at the air heater, the tuber pipe runs through down the setting of concave frame plate vertical portion side and runs through position and pipe chute intercommunication, the setting of blowing dish is less than the mounting disc bottom at pipe chute tip and blowing dish bottom, the line hole has been seted up to second bearer bar lateral wall, install the second connecting wire in the line hole, second connecting wire and electric box link to each other and provide power for air heater and rotation servo motor.

Preferably, still including crushing unit, crushing unit is including smashing motor, crushing axle, crushing sword and third electric connection line, and crushing motor sets up at first mounting panel top center, and crushing axle rotates to run through in first mounting panel top stretches into the hopper, and crushing sword equidistant setting is located the regional of hopper inside and from last length reduction down at crushing axle, and third electric connection line and electric box link to each other and provide power for smashing the motor.

A separation method of solid phase extraction equipment for food detection,

s1, installing and placing a reagent cartridge: the first reagent cylinder and the second reagent cylinder are arranged on the two groups of mounting base plates by utilizing the matching of an inserted rod below the mounting base plate in the mounting and containing assembly and an inserting groove at the top end of the sliding block, the second reagent cylinder is arranged on the mounting base plate in the direction close to the lower inverted concave frame plate, a food dissolving reagent is arranged in the second reagent cylinder, a substance dissolving reagent to be detected is arranged in the first reagent cylinder, a servo motor is started to drive the screw rod to rotate, and the first reagent cylinder and the second reagent cylinder are driven to move forwards under the matching of the screw rod and the sliding block;

s2, food sample control addition: with the advance of the second reagent cylinder, when the second reagent cylinder moves to the position below the inverted concave frame plate with lower height, the second reagent cylinder can block the infrared transmitter, the receiving plate cannot receive signals sent by the infrared transmitter and transmits the signals to the controller through the transmission head, the controller controls the electromagnetic valve to be opened through the transmission head at the moment, under the combined action of the control assembly and the feeding assembly, food samples in the hopper fall into the second reagent cylinder below through the conveying pipe, when the second reagent cylinder leaves, the receiving plate receives the signals again, the electromagnetic valve is closed, the top end of the first reagent cylinder is lower than the bottom end of the infrared transmitter, and no operation is performed when the first reagent cylinder passes through the inverted concave frame plate with lower height;

s3, separating the substances to be detected: with the continuous forward movement of the second reagent cylinder, when the second reagent cylinder moves to the center of the bottom end of the inverted concave frame plate with higher height, the solid phase extraction assembly and the telescopic assembly work, the servo motor stops working, the servo motor is rotated to run at the moment, the connecting rod is driven to move downwards under the matching of the telescopic thread and the screw sleeve, so that the extraction medium disc moves downwards into the second reagent cylinder, the extraction medium disc enters the second reagent cylinder in a rotating mode, a substance to be detected is extracted and adsorbed from a solvent into the extraction medium disc, and the servo motor is rotated in a reverse mode after the extraction medium disc is completed, so that the extraction medium disc is lifted and reset;

s4, collecting substances to be detected: start servo motor, No. two reagent section of thick bamboos and a reagent section of thick bamboos continue to move ahead, No. two reagent sections of thick bamboos leave the solid phase extraction subassembly, get into high concave type frame plate bottom center of falling when a reagent section of thick bamboo gets into, close servo motor, solid phase extraction subassembly and flexible subassembly move once more, it moves to rotate servo motor, under the cooperation of flexible screw thread and swivel nut, it moves down to drive the connecting rod, make extraction medium dish move down and get into a reagent section of thick bamboo, extraction medium dish rotary type gets into a reagent section of thick bamboo in, it carries wait to detect the reagent that the material melts into a reagent section of thick bamboo, after the completion, start servo motor, a reagent section of thick bamboo leaves the solid phase extraction subassembly and takes it down.

Compared with the prior art, the invention has the beneficial effects that:

1. by arranging the driving component, the mounting and containing component, the feeding component, the control component, the telescopic component and the solid-phase extraction component, when the solid-phase extraction of food detection is carried out, only the magnetic matching of the slot and the inserted rod is needed, the first reagent cylinder and the second reagent cylinder are mounted on the mounting base plate, required reagents are carried in the reagent cylinders, the driving component is used for driving the mounting and containing component to move, food sample control feeding, separation of substances to be detected and collection of substances to be detected are sequentially carried out through the telescopic component and the solid-phase extraction component of the control component, the automatic separation of extraction media and liquid can be realized without manual operation, meanwhile, the device automatically operates and extracts through various components, the efficiency is higher, the telescopic component enables the extraction medium disc to rotatably enter the reagent cylinder, and has a certain stirring effect on the liquid, the extraction and dissolution effects of the substance to be detected are improved.

2. Through setting up air-dry subassembly, the solid phase extraction subassembly is waiting to detect the extraction of material, draws the completion back, under the operation of flexible subassembly, the extraction medium dish rises and resets, can be infected with the reagent liquid that certain food sample dissolved on the extraction medium dish this moment, can dissolve subsequent material that awaits measuring and cause the influence, air-dry setting of subassembly can blow hot-blast, carry out hot air-drying to the extraction medium dish, get rid of the reagent liquid that food sample dissolved, improve the extraction precision of waiting to detect the material.

3. Through setting up crushing unit, carry out the in-process that food sample was reinforced at reinforced subassembly, utilize crushing motor to drive crushing axle and rotate to make crushing sword rotate, can smash the food sample in the hopper, make it become the tiny particle, it dissolves in special reagent solution to be convenient for, improve the efficiency of dissolving, crushing unit sets up on first mounting panel simultaneously, first mounting panel passes through screw demountable installation in protection curb plate top, be convenient for installation and dismantlement.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings described below are only some examples of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a base structure according to the present invention;

FIG. 3 is a schematic perspective sectional view of FIG. 2 according to the present invention;

FIG. 4 is an enlarged view of part A of the present invention;

FIG. 5 is a schematic diagram of a lower height inverted concave plate structure according to the present invention;

FIG. 6 is a schematic cross-sectional view of FIG. 5 according to the present invention;

FIG. 7 is an enlarged view of the portion B of the present invention;

FIG. 8 is an enlarged view of the section C of the present invention;

FIG. 9 is a schematic diagram of a structure of a concave-inverted plate with a higher height according to the present invention;

FIG. 10 is a schematic cross-sectional view of FIG. 9 according to the present invention;

FIG. 11 is a schematic cross-sectional view of FIG. 1 according to the present invention;

FIG. 12 is an enlarged view of the D-section of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-base, 2-mounting rectangular groove, 3-sliding groove, 4-sliding block, 5-screw rod, 6-moving driven gear, 7-servo motor, 8-moving master gear, 9-first protective frame, 10-mounting base plate, 11-first reagent cartridge, 12-second reagent cartridge, 13-inverted concave frame plate, 14-hopper, 15-conveying pipe, 16-electromagnetic valve, 17-infrared emitter, 18-receiving plate, 19-transmission head, 20-controller, 21-first connecting wire, 22-rotating servo motor, 23-rotating master gear, 24-rotating driven gear, 25-rotating shaft, 26-second protective frame, 27-screw sleeve, 28-connecting rod, 29-mounting plate, 30-mounting groove, 31-connecting column, 32-extracting medium disk, 33-leak hole, 34-hot air blower, 35-air pipe, 36-inclined pipe, 37-blowing disk, 38-line hole, 39-second connecting wire, 40-protective side plate, 41-first mounting plate, 42-second mounting plate, 43-electric box, 44-crushing motor, 45-crushing shaft, 46-crushing cutter, 47-third connecting wire, 48-threaded hole, 49-thread, 50-slot and 51-inserted rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the examples of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example one

As shown in figures 1, 2, 3, 4, 5, 6, 7, 8, 11 and 12,

a solid phase extraction device for food detection comprises a base 1, mounting rectangular grooves 2 are symmetrically arranged on two sides of the center of the top end of the base 1, the mounting rectangular grooves 2 are arranged close to the length edge of the top end of the base 1, a driving assembly is arranged on the base 1,

wherein, as shown in fig. 2, 3 and 4, the driving assembly comprises a sliding chute 3, two sets of sliding blocks 4, a screw 5, a moving driven gear 6, a servo motor 7 and a moving main gear 8, a first protective frame 9 is arranged on the side surface of the base 1, the first protective frame 9 comprises a first closing plate and a first handle,

specifically, the sliding chute 3 is arranged in the center of the top end of the base 1, the length of the sliding chute is slightly smaller than that of the base 1, the sliding blocks 4 slide in the sliding chute 3, the top ends of the sliding blocks are higher than that of the base 1, the screw 5 penetrates through the centers of the two groups of sliding blocks 4 in a threaded manner and is rotatably arranged at two ends of the sliding chute 3, the end part of the screw 5 rotatably penetrates through the base 1 and is connected with the movable driven gear 6, the servo motor 7 is arranged on the side surface of the base 1, the movable main gear 8 is connected with the output end of the servo motor 7, the movable main gear 8 is meshed with the movable driven;

wherein, as shown in fig. 3, the slide block 4 is provided with an installation and holding assembly, the installation and holding assembly comprises an installation chassis 10, a first reagent cylinder 11 and a second reagent cylinder 12, two groups of inverted concave frame plates 13 are symmetrically fixed at the center of the top end of the base 1, the heights of the two groups of inverted concave frame plates 13 are different,

specifically, the diameter of the mounting base plate 10 is larger than the length of the sliding blocks 4, the inner wall of the mounting base plate 10 is provided with a protective pad, the height of the first reagent cartridge 11 is smaller than the height of the second reagent cartridge 12, the horizontal distance between the centers of the two groups of inverted concave frame plates 13 is equal to the horizontal distance between the centers of the two groups of sliding blocks 4, and the inverted concave frame plates 13 are arranged between the two groups of mounting rectangular grooves 2;

wherein, as shown in fig. 3, 5 and 6, a feeding component and a control component are arranged on the lower set of inverted concave frame plates 13, the feeding component comprises a hopper 14, a material conveying pipe 15 and an electromagnetic valve 16, the control component comprises an infrared emitter 17, a receiving plate 18, a controller 20 and a first electric wire 21, the receiving plate 18 and the electromagnetic valve 16 are both connected with a transmission head 19,

specifically, hopper 14 sets up and runs through the setting of the concave frame board 13 at concave frame board 13 top center and bottom, and conveying pipeline 15 is installed at hopper 14 bottom and is set up with hopper 14 intercommunication, and solenoid valve 16 sets up at conveying pipeline 15 and 14 juncture positions of hopper, and the transmission head 19 on the solenoid valve 16 runs through the setting of conveying pipeline 15 lateral wall, and the horizontal plane that infrared emitter 17 transmitting position is located is higher than the horizontal plane that reagent cartridge 11 top was located and is less than the horizontal plane that reagent cartridge 12 top was located. The receiving board 18 is arranged opposite to the center of the infrared transmitter 17, an interface matched with the transmission head 19 is arranged on the controller 20, and the first connecting wire 21 is electrically connected with the controller 20;

wherein, as shown in fig. 3, 7 and 8, a telescopic assembly is arranged on the other group of higher inverted concave frame plate 13, the telescopic assembly comprises a rotary servo motor 22, a rotary main gear 23, a rotary driven gear 24 and a rotary shaft 25, a second protective frame 26 is arranged on the higher inverted concave frame plate 13, the second protective frame 26 comprises a second sealing plate and a second handle, a solid phase extraction assembly is arranged on the side wall of the rotary shaft 25, the solid phase extraction assembly comprises a telescopic thread, a threaded sleeve 27, a connecting rod 28, a mounting disc 29, a mounting groove 30, a connecting column 31, an extraction medium disc 32 and a leak hole 33,

specifically, a rotary servo motor 22 is fixed at the top end of an inverted concave frame plate 13, a rotary main gear 23 is arranged at the output end of the rotary servo motor 22, a rotary slave gear 24 is meshed with the rotary main gear 23, the diameter of the rotary slave gear 24 is larger than that of the rotary main gear 23, a rotary shaft 25 penetrates through the center of the top end of the inverted concave frame plate 13 in a rotary mode, a baffle disc is arranged at the bottom end of the rotary shaft 25, telescopic threads are arranged in an area, located at the lower part of the bottom end of the horizontal part of the inverted concave frame plate 13, a threaded sleeve 27 is in threaded fit with the telescopic threads, four groups of connecting rods 28 are arranged on the periphery of the bottom end of the threaded sleeve 27, the length of each connecting rod 28 is equal to that of a rope thread, a mounting disc 29 is fixed at the bottom end of each connecting rod 28, a connecting column 31 is arranged in the, the extraction medium disc 32 is fixed at the bottom end of the connecting column 31, and the leakage holes 33 are uniformly arranged on the mounting disc 29 except for the region where the mounting groove 30 is located;

as shown in fig. 1, 11 and 12, a protective side plate 40 is installed inside the mounting rectangular slot 2, a first mounting plate 41 and a second mounting plate 42 are screwed to the top end of the protective side plate 40, an electrical box 43 is arranged on the second mounting plate 42, the first connecting wire 21 and the electrical box 43 are connected to provide power for the control assembly,

specifically, a threaded hole 48 is formed in the center of the top end of a group of lower inverted concave frame plates 13, the hopper 14 comprises a circular cylindrical part and a cylindrical part, threads 49 matched with the threaded hole are formed in the bottom end of the side wall of the cylindrical part, the height of the cylindrical part is equal to the thickness of the top end of the inverted concave frame plates 13, the horizontal plane where the bottom end of the conveying pipe 16 is located is higher than the horizontal plane where the top end of the second reagent cylinder 12 is located, a slot 50 is formed in the center of the top end of the sliding block 4, an inserting rod 51 matched with the slot is fixed in the center of the bottom end of the mounting base;

the specific use method of the equipment comprises the following steps:

s1, installing and placing a reagent cartridge: by utilizing the matching of an inserted link 51 below an installation chassis 10 in the installation containing assembly and a slot 50 at the top end of a sliding block 4, a first reagent cylinder 11 and a second reagent cylinder 12 are installed on two groups of installation chassis 10, the second reagent cylinder 12 is placed on the installation chassis 10 in the direction close to a lower inverted concave frame plate 13, a food dissolving reagent is placed inside the second reagent cylinder 12, a substance dissolving reagent to be detected is placed inside the first reagent cylinder 11, a servo motor 7 is started to drive a screw rod 5 to rotate, and the first reagent cylinder 11 and the second reagent cylinder 12 are driven to move forwards under the matching of the screw rod 5 and the sliding block 4;

s2, food sample control addition: with the advance of the reagent cylinder II 12, when the reagent cylinder II 12 moves to the position below the inverted concave frame plate 13 with lower height, the reagent cylinder II 12 can block the infrared emitter 17, the receiving plate 18 cannot receive the signal sent by the infrared emitter 17 and transmits the signal to the controller 20 through the transmission head 19, at the moment, the controller 20 controls the electromagnetic valve 16 to be opened through the transmission head 19, under the combined action of the control assembly and the feeding assembly, a food sample in the hopper 14 falls into the reagent cylinder II 12 below through the material conveying pipe 15, when the reagent cylinder II 12 leaves, the receiving plate 18 receives the signal again, the electromagnetic valve 16 is closed, the top end of the reagent cylinder I11 is lower than the bottom end of the infrared emitter 17, and no operation is performed when the reagent cylinder II passes through the inverted concave frame plate 13 with lower height;

s3, separating the substances to be detected: with the continuous forward movement of the second reagent cartridge 12, when the second reagent cartridge moves to the center of the bottom end of the inverted concave frame plate 13 with higher height, the solid phase extraction assembly and the telescopic assembly work, the servo motor 7 stops working, the servo motor 22 is rotated to run at the moment, the connecting rod 28 is driven to move downwards under the matching of the telescopic thread and the screw sleeve 27, so that the extraction medium disc 32 moves downwards to enter the second reagent cartridge 12, the extraction medium disc 32 enters the second reagent cartridge 12 in a rotating mode, a substance to be detected is extracted from a solvent and adsorbed into the extraction medium disc 32, and after the completion, the servo motor 22 is rotated in a reverse mode, so that the extraction medium disc 32 is lifted and reset;

s4, collecting substances to be detected: the servo motor 7 is started, the reagent barrel 12 and the reagent barrel 11 continue to move forward, the reagent barrel 12 leaves the solid phase extraction assembly, when the reagent barrel 11 enters the center of the bottom end of the inverted concave frame plate 13 with higher height, the servo motor 7 is closed, the solid phase extraction assembly and the telescopic assembly operate again, the servo motor 22 rotates to operate, the connecting rod 28 is driven to move downwards under the matching of the telescopic thread and the threaded sleeve 27, the extraction medium disc 32 moves downwards to enter the reagent barrel 11, the extraction medium disc 32 rotatably enters the reagent barrel 11, a substance to be detected carried by the reagent barrel is fused into the reagent in the reagent barrel 11, after the completion, the servo motor 7 is started, and the reagent barrel 11 leaves the solid phase extraction assembly to take the reagent barrel 11 down.

Example two

On the basis of the first embodiment, referring to fig. 9 and 10, a solid phase extraction device for food detection:

also comprises an air drying component which comprises a hot air blower 34, an air pipe 35, an inclined pipe 36 and a blowing disc 37,

specifically, the hot air heater 34 is arranged in the second protection frame 26, the heat divider 34 is of a double-outlet structure, the air pipes 25 are symmetrically arranged at the double-outlet end portions of the hot air heater 34, the air pipe 35 penetrates through the side surface of the vertical portion of the inverted concave frame plate 13 and is communicated with the inclined pipe 36, the blowing disc 37 is arranged at the end portion of the inclined pipe 36, the bottom end of the blowing disc 37 is lower than the bottom end of the mounting disc 29, the side wall of the second protection frame 26 is provided with a wire hole 38, a second connecting wire 39 is arranged in the wire hole 38, and the second connecting wire 39 is connected with the electric box 43 to provide power for the hot air heater 34 and the rotary servo motor;

the working principle is as follows:

the device provided by the technical scheme further comprises air drying steps in the processes of S3 and S4, an air drying assembly is arranged, after the process of S3 is completed, the servo motor 22 is rotated in a reverse rotation mode, the rotating shaft 25 is driven to rotate in a reverse rotation mode, the screw sleeve 27 moves upwards under the matching of the telescopic threads and the screw sleeve 27, the connecting rod 28 moves upwards at the moment, the extraction medium disc 32 is driven to move upwards for resetting, certain reagent liquid for dissolving a food sample can be stained on the extraction medium disc 32 at the moment, subsequent dissolution of a substance to be detected can be influenced, the hot air blower 34 in the air drying assembly can be started, hot air is sent to the air blowing disc 37 through the air pipe 35 and the inclined pipe 36, all parts in the solid phase extraction assembly are dried through the hot air, particularly, the extraction medium disc 32 is dried through the air, the reagent liquid for dissolving the food sample is removed;

similarly, in the S4 process, the extraction medium tray 32 enters the first reagent cartridge 11 in a rotating manner, the substance to be detected carried by the extraction medium tray is melted into the reagent in the first reagent cartridge 11, after completion, the rotation is performed by rotating the servo motor 22 in a reverse manner, the rotating shaft 25 is driven to rotate in a reverse manner, the screw sleeve 27 moves upwards under the cooperation of the telescopic screw threads and the screw sleeve 27, the connecting rod 28 moves upwards at the moment, the extraction medium tray 32 is driven to move upwards for resetting, the extraction medium tray 32 is contaminated with a certain reagent liquid dissolved in the substance to be detected at the moment, the hot air blower 34 in the air drying assembly can be started, hot air is sent to the air blowing tray 37 through the air pipe 35 and the inclined pipe 36, and the hot air drying is performed on each component in the solid phase extraction assembly, particularly, the.

EXAMPLE III

On the basis of the second embodiment, referring to fig. 11 and 12, a solid phase extraction device for food detection:

also comprises a crushing component, the crushing component comprises a crushing motor 44, a crushing shaft 45, a crushing knife 46 and a third electric wire 47,

specifically, the crushing motor 44 is arranged at the center of the top end of the first mounting plate 41, the crushing shaft 45 rotatably penetrates through the top end of the first mounting plate 41 and extends into the hopper 14, the crushing blades 46 are arranged in the area of the crushing shaft 45 in the hopper 14 at equal intervals, the length of the crushing blades is reduced from top to bottom, and the third connecting wire 47 and the electric box 43 are connected to provide power for the crushing motor 44;

the working principle is as follows: the device that this technical scheme provided still includes the crushing step of the food sample of S2 in-process, before carrying out food sample reinforced, utilize the screw to install first mounting panel 41 on protection curb plate 40, realize crushing unit' S installation, be convenient for its installation and dismantlement, utilize crushing motor 44 to drive crushing axle 45 and rotate, thereby make crushing sword 46 rotate, crushing sword 46 equidistant setting is located the regional of hopper 14 inside and from last length diminishing down at crushing axle 45, can smash the food sample in the hopper 14, make it become the tiny particle, it dissolves in special reagent solution to be convenient for, improve the efficiency of dissolving.

The electrical components are all connected with a power supply, and the control mode is common knowledge, so the details are not described in the specification. And the control circuit can be realized by simple programming by a person skilled in the art, which belongs to the common general knowledge in the field, only is used without modification, and the invention is mainly used for protecting mechanical devices, so the invention does not explain the control mode and the circuit connection in detail.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a food detects uses solid-phase extraction equipment, includes base (1), its characterized in that: the device is characterized in that mounting rectangular grooves (2) are symmetrically formed in two sides of the center of the top end of the base (1), a driving assembly is arranged on the base (1) and comprises a sliding groove (3), two groups of sliding blocks (4), a screw rod (5), a moving driven gear (6), a servo motor (7) and a moving main gear (8), a first protection frame (9) is arranged on the side face of the base (1), the first protection frame (9) comprises a first sealing plate and a first handle, a mounting containing assembly is arranged on each sliding block (4) and comprises a mounting chassis (10), a first reagent cylinder (11) and a second reagent cylinder (12), two groups of concave inverted frame plates (13) are symmetrically fixed on the center of the top end of the base (1), the two groups of concave inverted frame plates (13) are different in height, and a feeding assembly and a control assembly are arranged on the lower group of concave inverted frame plates (13), reinforced subassembly is including hopper (14), conveying pipeline (15) and solenoid valve (16), control assembly is including infrared emitter (17), dash receiver (18), controller (20) and first electric wire (21), dash receiver (18) and solenoid valve (16) all are connected with transmission head (19), and another group is higher be provided with flexible subassembly on the type of falling concave frame board (13), flexible subassembly is including rotating servo motor (22), rotating master gear (23), rotating from gear (24) and pivot (25), higher be provided with second protecting frame (26) on the type of falling concave frame board (13), second protecting frame (26) are including second closing plate and second handle, be provided with the solid-phase extraction subassembly on pivot (25) lateral wall, the solid-phase extraction subassembly is including flexible screw thread, swivel nut (27), connecting rod (28), Mounting disc (29), mounting groove (30), spliced pole (31), extraction medium dish (32), small opening (33), installation moment groove (2) internally mounted has protection curb plate (40), protection curb plate (40) top screw connection has first mounting panel (41) and second mounting panel (42), is provided with electric box (43) on second mounting panel (42), first electric connection line (21) and electric box (43) link to each other and provide power for control assembly.

2. The solid phase extraction device for food detection according to claim 1, wherein: installation square groove (2) are close to base (1) top length edge and set up, spout (3) set up at base (1) top center and length slightly less than the length of base (1), slider (4) slide in spout (3) and the top is higher than base (1) top, screw rod (5) screw thread runs through two sets of slider (4) centers and rotates the setting at spout (3) both ends, screw rod (5) tip rotates and runs through base (1) and remove and link to each other from gear (6), servo motor (7) set up in base (1) side, it links to each other to remove master gear (8) and servo motor (7) output, it is less than the diameter of removing from gear (6) to remove master gear (8) and remove the diameter of removing master gear (8) from gear (6) meshing.

3. The solid phase extraction device for food detection according to claim 1, wherein: the diameter of installation chassis (10) is greater than the length of slider (4), be provided with the protection pad on installation chassis (10) inner wall, the height that highly is less than No. two reagent section of thick bamboos (12) of a reagent section of thick bamboo (11), two sets of horizontal distance between type frame plate (13) center falls equals the horizontal distance between two sets of slider (4) centers, type frame plate (13) that falls sets up between two sets of installation rectangular grooves (2).

4. The solid phase extraction device for food detection according to claim 1, wherein: hopper (14) set up and run through the setting of falling concave type frame plate (13) at falling concave type frame plate (13) top center and bottom, conveying pipeline (15) are installed and are set up in hopper (14) bottom and hopper (14) intercommunication, solenoid valve (16) set up at conveying pipeline (15) and hopper (14) juncture position, conveying pipeline (15) lateral wall setting is run through in transmission head (19) on solenoid valve (16), infrared emitter (17) launch position locate the horizontal plane be higher than reagent section of thick bamboo (11) top locate the horizontal plane and be less than No. two reagent section of thick bamboo (12) top locate the horizontal plane, receiving board (18) just set up infrared emitter (17) center, be provided with on controller (20) with transmission head (19) complex interface, first electric wire (21) and controller (20) electric connection.

5. The solid phase extraction device for food detection according to claim 1, wherein: rotate servo motor (22) and fix on falling concave type frame plate (13) top, rotate master gear (23) and set up and rotate servo motor (22) output, rotate and follow gear (24) and rotate master gear (23) meshing and rotate the diameter that is greater than rotation master gear (23) from gear (24) diameter, pivot (25) are rotated and are run through falling concave type frame plate (13) top center, pivot (25) bottom is provided with the fender dish.

6. The solid phase extraction device for food detection according to claim 1, wherein: the telescopic screw thread is arranged in the area of the side wall of the rotating shaft (25) which is positioned at the lower part of the bottom end of the horizontal part of the inverted concave frame plate (13), the threaded sleeve (27) is in threaded fit with the telescopic thread, the connecting rods (28) are four groups in total and are uniformly arranged at the edge of the bottom end of the threaded sleeve (27) in the circumference, the length of the connecting rod (28) is equal to that of the rope thread, the mounting disc (29) is fixed at the bottom end of the connecting rod (28), the mounting groove (30) is arranged in the center of the bottom end of the mounting disc (29), the connecting column (31) is mounted in the mounting groove (30) and the height of the connecting column is greater than the depth of the mounting groove (30), the connecting column (31) and the mounting groove (30) are detachably connected through a screw, the extraction medium disc (32) is fixed at the bottom end of the connecting column (31), and the leakage holes (33) are uniformly formed in the region of the mounting disc (29) except the region where the mounting groove (30) is located.

7. The solid phase extraction device for food detection according to claim 4, wherein: a set of lower screw hole (48) is seted up at type frame plate (13) top center of falling the concave type, hopper (14) are including round platform portion and cylinder portion, cylinder portion lateral wall bottom is seted up with screw hole amount complex screw thread (49), the height of cylinder portion equals the thickness on type frame plate (13) top, the horizontal plane that delivery pipeline (16) bottom was located is higher than the horizontal plane that No. two reagent section of thick bamboo (12) top was located, slot (50) have been seted up at slider (4) top center, installation chassis (10) bottom center is fixed with slot complex inserted bar (51), inserted bar (51) and slot (50) magnetic fit are connected.

8. The solid phase extraction device for food detection according to claim 1, wherein: also comprises an air drying component which comprises an air heater (34), an air pipe (35), an inclined pipe (36) and a blowing disc (37), the hot air blower (34) is arranged in the second protective frame (26), the heat extension machine (34) is of a double-outlet structure, the air pipes (35) are symmetrically arranged at the end parts of the double outlets of the hot air blower (34), the air pipe (25) penetrates through the side surface of the vertical part of the inverted concave frame plate (13) and the penetrating position is communicated with the inclined pipe (36), the blowing disc (37) is arranged at the end part of the inclined pipe (36), the bottom end of the blowing disc (37) is lower than that of the mounting disc (29), a wire hole (38) is formed in the side wall of the second protective frame (26), a second connecting wire (39) is installed in the wire hole (38), the second connecting wire (39) is connected with the electric box (43) to provide power for the hot air blower (34) and the rotary servo motor (22).

9. The solid phase extraction device for food detection according to claim 1, wherein: still including crushing unit, crushing unit is including crushing motor (44), crushing axle (45), crushing sword (46) and third electric connection line (47), crushing motor (44) set up at first mounting panel (41) top center, crushing axle (45) are rotated and are run through in first mounting panel (41) top stretches into hopper (14), crushing sword (46) equidistant setting is located the inside region of hopper (14) and from last length diminishing down at crushing axle (45), third electric connection line (47) and electric box (43) link to each other and provide power for crushing motor (44).

10. A separation method of a solid phase extraction device for food detection, which uses the solid phase extraction device for food detection according to any one of claims 1 to 7, and is characterized by comprising the following steps:

s1, installing and placing a reagent cartridge: by utilizing the matching of an inserted rod (51) below an installation base plate (10) in the installation containing assembly and a slot (50) at the top end of a sliding block (4), a first reagent cylinder (11) and a second reagent cylinder (12) are installed on two groups of installation base plates (10), the second reagent cylinder (12) is placed on the installation base plate (10) close to the lower inverted concave frame plate (13) in the direction, a food dissolving reagent is placed inside the second reagent cylinder (12), a substance dissolving reagent to be detected is placed inside the first reagent cylinder (11), a servo motor (7) is started to drive a screw rod (5) to rotate, and the first reagent cylinder (11) and the second reagent cylinder (12) are driven to move forwards under the matching of the screw rod (5) and the sliding block (4);

s2, food sample control addition: when the second reagent cartridge (12) moves to the lower part of the inverted concave frame plate (13) along with the forward movement of the second reagent cartridge (12), the second reagent cylinder (12) can block the infrared emitter (17), the receiving plate (18) can not receive the signal sent by the infrared emitter (17), is transmitted to a controller (20) through a transmission head (19), the controller (20) controls the electromagnetic valve (16) to be opened through the transmission head (19), under the combined action of the control component and the feeding component, food samples in the hopper (14) fall into a second reagent cylinder (12) below through a conveying pipe (15), when the second reagent cartridge (12) leaves, the receiving plate (18) receives the signal again, the electromagnetic valve (16) is closed, the top end of the first reagent cartridge (11) is lower than the bottom end of the infrared emitter (17), and no operation is performed when the first reagent cartridge passes through the inverted concave frame plate (13) with lower height;

s3, separating the substances to be detected: with the continuous forward movement of the second reagent cylinder (12), when the second reagent cylinder moves to the center of the bottom end of the inverted concave frame plate (13) with higher height, the solid phase extraction assembly and the telescopic assembly work, the servo motor (7) stops working, the servo motor (22) is rotated at the moment, the connecting rod (28) is driven to move downwards under the matching of the telescopic thread and the screw sleeve (27), so that the extraction medium disc (32) moves downwards into the second reagent cylinder (12), the extraction medium disc (32) rotatably enters into the second reagent cylinder (12), a substance to be detected is extracted from a solvent and adsorbed into the extraction medium disc (32), and the servo motor (22) is rotated reversely after the extraction medium disc (32) is completed, so that the extraction medium disc (32) is lifted and reset;

s4, collecting substances to be detected: starting a servo motor (7), continuing to move forward a reagent cylinder (12) and a reagent cylinder (11), leaving a solid-phase extraction assembly for the reagent cylinder (12), when the reagent cylinder (11) enters the bottom center of a high inverted concave frame plate (13), closing the servo motor (7), operating the solid-phase extraction assembly and a telescopic assembly again, rotating a servo motor (22) to operate, driving a connecting rod (28) to move downwards under the matching of a telescopic thread and a screw sleeve (27), so that an extraction medium disc (32) moves downwards to enter the reagent cylinder (11), rotatably entering the reagent cylinder (11) through the extraction medium disc (32), enabling a substance to be detected carried by the extraction medium disc to be fused into a reagent in the reagent cylinder (11), starting the servo motor (7) after the completion, leaving the solid-phase extraction assembly for the reagent cylinder (11), and taking the reagent cylinder (11) down.