CN113267491A

CN113267491A - Portable food detection method

Info

Publication number: CN113267491A
Application number: CN202110535317.5A
Authority: CN
Inventors: 谢红秀
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2021-08-17

Abstract

The invention discloses a convenient food detection method, S1, placing food to be detected into a mixing drum on a rotating frame, and adding an extracting solution into the mixing drum; s2, stirring the extracting solution and the food sample by driving a pounding mechanism to fully dissolve the food in the extracting solution; s3, discharging the stirred solution into the filter cylinder for storage through a stopping discharge mechanism; the invention has scientific and reasonable structure and safe and convenient use, is provided with the driving and pounding mechanism, drives the mixing drum to rotate through the matching of the driving motor and the guide wheel, rotationally stirs the extracting solution and the food in the mixing drum, improves the mixing effect, facilitates the food to be dissolved in the extracting solution and facilitates the sampling, and simultaneously drives the screw rod to rotate through the matching of the driving gear and the driven gear in the rotating process of the mixing drum, so that the reciprocating plate rises along the screw rod to be attached to the top plate, and the travel switch is started to reversely rotate the driving motor.

Description

Portable food detection method

Technical Field

The invention relates to the technical field of equipment, in particular to a convenient food detection method.

Background

After a sample is digested, all forms of heavy metals including arsenic, lead, cadmium, chromium, mercury, nickel, iron, aluminum, zinc, manganese, copper and the like are converted into ionic forms, relevant detection reagents are added to the ionic forms for color development, the color depth of a solution in a certain concentration range is in a proportional relation with the content of the heavy metals, the Lambert-beer law is obeyed, the content value is obtained by measuring through an instrument, and the content value is compared with the standard of the national standard agricultural product safety quality pollution-free vegetable safety requirement allowed limit to judge the content of the heavy metals in the vegetable sample;

however, the existing sample has poor dissolution and extraction efficiency, which affects the detection efficiency, and when the sample is mixed with a color developing agent, the sample is easy to contact with people, which causes pollution to the sample and affects the subsequent detection effect.

Disclosure of Invention

The invention provides a convenient food detection method, which can effectively solve the problems that the dissolution and extraction efficiency of a sample is poor, the detection efficiency is influenced, and meanwhile, when the sample is mixed with a color developing agent, the sample is easy to contact with people, the sample is polluted, and the subsequent detection effect is influenced.

In order to achieve the purpose, the invention provides the following technical scheme: a portable food detection method comprises the following steps:

s1, putting the food to be detected into a mixing cylinder on a rotating frame, and adding the extracting solution into the mixing cylinder;

s2, stirring the extracting solution and the food sample by driving a pounding mechanism to fully dissolve the food in the extracting solution;

s3, discharging the stirred solution into the filter cylinder for storage through a stopping discharge mechanism;

and S4, delivering the solution sample into the measuring cup through the instillation and homogenization mechanism, mixing the solution sample with the color developing agent, and then carrying out color ratio to detect whether the heavy metal content in the food exceeds the standard or not.

According to the technical scheme, in S3, food residues in the solution are filtered through the filter screen in the filter cylinder to separate solid from liquid, and in S4, when the solution sample is dripped, people are prevented from directly contacting the solution sample, and pollution of the solution sample is reduced.

Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure and safe and convenient use:

1. the device is provided with a driving and hammer tamping mechanism, the mixing drum is driven to rotate through the matching of a driving motor and a guide wheel, extracting solution and food in the mixing drum are rotationally stirred, the mixing effect is improved, the food is convenient to dissolve in the extracting solution, the sampling is convenient, meanwhile, through the matching of the driving gear and a driven gear, in the rotating process of the mixing drum, a screw rod is driven to rotate, a reciprocating plate is enabled to be attached to a top plate along the rising of the screw rod, a travel switch is started, the driving motor is enabled to rotate reversely, the mixing drum is driven to rotate reversely, the food and the extracting solution are reversely stirred, the stirring and mixing effect is improved, meanwhile, through the matching of the driving gear and the driven gear, the screw rod is driven to rotate, the reciprocating plate is enabled to descend to be contacted with a touch switch, the driving motor is turned off, the stirring is completed, the convenience of the device is improved, the rotating drum is driven to rotate through a knob, and the rotating drum pushes a push rod to move, the position of the top plate in the transmission box is adjusted, so that the rotation time of the mixing drum is finely adjusted, the proper stirring time is conveniently adjusted according to needs, and the adaptability of the device is improved;

this time, through friction strip and drive wheel, the cooperation of bull stick, form the subassembly, transmit power, at the in-process of mixing the stirring, it is rotatory to drive the carousel, and the transmission through the rotor plate, the pulling rack is rotatory, rethread drive gear's cooperation, further transmit power, it is rotatory to drive the sleeve, thereby it smashes at the inside lift mallet of mixing drum to drive lifter and stirring leaf, conveniently smash food, make food in the inside abundant dissolution of extract, the extraction efficiency of sample has been improved, the convenience of device has been increased, the time of detection has been shortened.

2. The stopping and discharging mechanism is arranged, the pulling force on the belt is relieved through the rising of the reciprocating plate, the telescopic spring is made to stretch and retract, the sliding plate and the outer magnetic plate are pushed to move, the distance between the outer magnetic plate and the metal block at the top end of the mixing drum is reduced, the suction force of the outer magnetic plate on the metal block is increased, the rotating resistance of the mixing drum is increased, the rotating speed of the mixing drum is reduced, further, when the mixing drum is driven by the driving motor and the guide wheel to rotate reversely, the rotating inertia of the mixing drum is reduced, the stress borne by the output shaft of the driving motor is reduced, the damage and the fracture of the output shaft are avoided, the rotating effect is ensured, meanwhile, in the process of reverse rotation, the belt is pulled to rotate along the guide wheel through the convex block, the sliding plate is pulled to reset, the suction force of the outer magnetic plate on the metal block is reduced, the rotating efficiency of the mixing drum is gradually increased, and the mixing effect is improved;

in addition, start the electro-magnet through control switch, make the electro-magnet produce magnetic force, thereby make the electro-magnet adsorb in the metal sheet bottom, prevent the mixing drum rotatory, make the mixing drum can stop fast, the electro-magnet rises simultaneously, it rises to drive movable rod and activity ring, and through the connecting rod, the cooperation of axle bed and montant, form the subassembly, promote the apron and rise, remove sealed to the recess, the convenience is discharged mixed good sample solution inside the cartridge filter along the ring baffle, and through the inside filter screen of cartridge filter, separate solid-liquid, the convenience of device has been improved, conveniently carry out subsequent detection, in addition through the flexible effect of tensioning spring, when the electro-magnet is not electrified, pulling electro-magnet and apron reset, seal the mixing drum, avoid the solution to flow out.

3. The drip and homogenizing mechanism is arranged, the sample solution in the filter cartridge is pumped into the pumping pipe through the water pump and is sent into the liquid storage box through the hose, then the sample solution is injected into the measuring cup in the embedded groove through the injection pipe, the collection effect of the sample solution is improved, the contact between the sample solution and the external environment is reduced, the influence on the placement of the sample solution is avoided, the detection accuracy is ensured, meanwhile, in the extraction process, the solution sample is accumulated in the liquid storage box, the movable plate is driven to ascend, the sealing of the fixed rod and the sealing plate on the burette is relieved, the color developing agent is convenient to drip into the measuring cup through the burette, the convenience of the device is further improved, the solution is prevented from being contacted by people, the pollution to the sample solution is avoided, the detection accuracy is ensured, after the measuring cup is filled with the liquid, the float ball is pushed to ascend, and the float ball seals the injection pipe and the burette, then, the water pump rotates reversely, and the residual solution in the liquid storage tank is sent back to the interior of the filter cylinder, so that the subsequent concentrated collection of the sample solution is facilitated;

the time, through the cooperation of water wheels and transmission shafts, components are formed, hydrodynamic force is utilized to drive the rotating shaft and the cam to rotate, so that the rectangular frame is pushed to slide in the vibration box, the placing frame is driven to swing left and right in the vibration box through the cooperation of the connecting plate and the supporting block, the sample solution and the display agent in the measuring cup are vibrated and mixed, the mixing effect of the sample solution and the display agent is improved, the chromaticity comparison is convenient to carry out, the convenience of the device is improved, meanwhile, the slider is suspended in the vibration box with the placing frame through the repulsion of the magnetic stripe to the magnetic core in the slider, the friction is reduced, through the cooperation of the supporting spring, the vibration effect of the placing frame is improved to the maximum extent, the mixing efficiency is improved, in addition, through the cooperation of the handle and the pull rod, the liquid storage box is convenient to pull up, the measuring cup is convenient to take out, the sample solution in the measuring cup is detected, and (5) comparing the colorimetric degrees, and detecting the heavy metal content in the food.

Synthesize, improve the effect that extract and food carried out the stirring through drive and mallet stamp mechanism, increased food and in the inside dissolved efficiency of extract to through stall discharge mechanism, when guaranteeing the mixing drum pivoted, conveniently will draw good solution sample and discharge, the rethread instils and homogeneity mechanism injects solution sample and developer into the measuring cup inside fast and mixes, when improving detection efficiency, avoids people to contact the solution sample, reduces the pollution to the solution sample, guarantees the precision that detects.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a diagram of a food testing method of the present invention;

FIG. 2 is a schematic view of the mounting structure of the bracket of the present invention;

FIG. 3 is a schematic view of the mounting structure of the mixing drum of the present invention;

FIG. 4 is a schematic structural view of the drive and tamping mechanism of the present invention;

FIG. 5 is a schematic view of the mounting structure of the driving wheel according to the present invention;

FIG. 6 is a schematic view of the mounting structure of the bump of the present invention;

FIG. 7 is a schematic view of the stall drain mechanism of the present invention;

FIG. 8 is a schematic structural view of the area A in FIG. 3 according to the present invention;

FIG. 9 is a schematic view of the mounting structure of the hose of the present invention;

FIG. 10 is a schematic diagram of the instillation and homogenization mechanism of the invention;

fig. 11 is a schematic view of the mounting structure of the rectangular frame of the present invention.

Reference numbers in the figures: 1. a filter cartridge; 2. a machine base; 3. a discharge passage; 4. a rotating frame; 5. a mixing drum;

6. a driving and pounding mechanism; 601. a drive motor; 602. a guide wheel; 603. a driving gear; 604. a transmission case; 605. a screw rod; 606. a driven gear; 607. a reciprocating plate; 608. a top plate; 609. a rotating drum; 610. a knob; 611. a push rod; 612. a transverse plate; 613. a rotating rod; 614. a driving wheel; 615. rubbing the strips; 616. a turntable; 617. a rotating plate; 618. a sleeve; 619. a transmission gear; 620. a rack; 621. a lifting rod; 622. stirring blades; 623. a travel switch; 624. a touch switch;

7. a stall discharge mechanism; 701. a fixing ring; 702. a movable rod; 703. a movable ring; 704. tensioning the spring; 705. a connecting rod; 706. a shaft seat; 707. a vertical rod; 708. a cover plate; 709. an electromagnet; 710. a metal plate; 711. a groove; 712. an annular baffle; 713. a slide plate; 714. an outer magnetic plate; 715. a metal block; 716. a tension spring; 717. a guide wheel; 718. a belt; 719. a bump;

8. a drip and homogenizing mechanism; 801. a vibration box; 802. a magnetic strip; 803. a slider; 804. placing a rack; 805. a support spring; 806. a support block; 807. a roller; 808. a connecting plate; 809. a rectangular frame; 810. a rotating shaft; 811. a cam; 812. a groove is embedded; 813. a water pumping pipe; 814. a water pump; 815. a water wheel; 816. a drive shaft; 817. a hose; 818. a liquid storage tank; 819. a pull rod; 820. a handle; 821. a movable plate; 822. a dropper; 823. fixing the rod; 824. an injection pipe; 825. a hauling rope; 826. a floating ball;

9. and (4) a bracket.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example (b): as shown in fig. 1, the invention provides a technical solution, and a portable food detection method, comprising the following steps:

s1, putting the food to be detected into the mixing cylinder 5 on the rotating frame 4, and simultaneously adding the extracting solution into the mixing cylinder 5;

s2, stirring the extracting solution and the food sample by driving the hammer mechanism 6 to fully dissolve the food in the extracting solution;

s3, discharging the stirred solution into the filter cartridge 1 for storage through the stop-rotation discharge mechanism 7;

and S4, delivering the solution sample into the measuring cup through the instillation and homogenization mechanism 8, mixing the solution sample with the color developing agent, and then performing color ratio to detect whether the heavy metal content in the food exceeds the standard or not.

According to the technical scheme, food residues in the solution are filtered through the filter screen in the filter cartridge 1 in S3, so that solid and liquid are separated, and when the solution sample is dripped in S4, people are prevented from directly contacting the solution sample, so that the pollution of the solution sample is reduced.

As shown in FIGS. 2-11, a portable food detection device, a base 2 is fixedly connected to the bottom end of a filter cartridge 1, a discharge passage 3 is fixedly connected to the middle position of the top end of the filter cartridge 1, a rotary frame 4 is symmetrically and fixedly connected to the top position of the outer side of the discharge passage 3 through bolts, a mixing drum 5 is rotatably connected to the top end of the discharge passage 3 corresponding to the position between the two rotary frames 4, driving and pounding mechanisms 6 are symmetrically arranged in the rotary frame 4 corresponding to the positions of the two sides of the mixing drum 5, and each driving and pounding mechanism 6 comprises a driving motor 601, a guide wheel 602, a driving gear 603, a transmission box 604, a lead screw 605, a driven gear 606, a reciprocating plate 607, a top plate 608, a rotary drum 609, a knob 610, a push rod 611, a transverse plate 612, a rotary rod 613, a transmission wheel 614, a friction strip 615, a rotary plate 616, a rotary plate 617, a sleeve 618, a transmission gear 619, a rack 620, a lifting rod, Stirring blade 622, travel switch 623 and touch switch 624;

the bottom of the inner wall of the rotating frame 4 is symmetrically embedded with a driving motor 601, one end of the output shaft of the driving motor 601 is melt-cast with a guide wheel 602, a driving gear 603 is fixedly sleeved at a position of one side of the outer side of the driving motor 601 corresponding to the guide wheel 602, a transmission case 604 is fixedly connected with the top of the driving gear 603 through a bolt, a lead screw 605 is rotatably connected at a position of the inner side of the transmission case 604, the bottom of the lead screw 605 penetrates through the bottom of the transmission case 604, a driven gear 606 is melt-cast at the bottom of the lead screw 605, a reciprocating plate 607 is connected at a position of the outer side of the lead screw 605 corresponding to the bottom of the transmission case 604 through a thread, a top plate 608 is movably connected at a position of the outer side of the transmission case 604, the top of the transmission case 604 is rotatably connected with a rotating cylinder 609, a knob 610 is melt-cast at the top of the rotating cylinder 609, the bottom of the rotating cylinder 609 penetrates through the top of the transmission case 604, and a push rod 611 is connected at the bottom of the rotating cylinder 609 through a thread, the bottom end of a push rod 611 is rotatably connected with the top end of a top plate 608, the bottom end of the top plate 608 is fixedly connected with a travel switch 623 through a bolt, the bottom end of a transmission case 604 is fixedly connected with a touch switch 624 through a bolt, in order to improve the extraction effect of the extracting solution, a notch is formed in the bottom position of the outer side of a mixing drum 5, the outer side of a guide wheel 602 is attached to the top end of the notch, anti-slip threads are formed in the outer side of the guide wheel 602 and the top end of the notch, a shifting sheet is fixedly connected to the inner wall of the mixing drum 5 at equal intervals through bolts, a driving gear 603 and a driven gear 606 are both bevel gears, the driving gear 603 and the driven gear 606 are meshed and connected with each other, and one end of a reciprocating plate 607 and one end of the top plate 608 are both in sliding connection with the inner wall of a rotating frame 4;

the top end of the rotating frame 4 is fixedly connected with a transverse plate 612 through bolts, the bottom end of the transverse plate 612 is symmetrically and rotatably connected with rotating rods 613 corresponding to the positions of two sides of the mixing cylinder 5, a transmission wheel 614 is cast at the bottom end of the rotating rods 613, a friction strip 615 is fixedly sleeved at the position, corresponding to one side of the transmission wheel 614, outside the mixing cylinder 5, the top end of the rotating rods 613 penetrates through the top end of the transverse plate 612, a rotating plate 616 is cast at the position, corresponding to the inner side, of the transverse plate 612 at the top end of the rotating rods 613, a rotating plate 617 is rotatably connected at the position, a sleeve 618 is rotatably connected at the middle position, corresponding to the top position of the transverse plate 612, a transmission gear 619 is fixedly sleeved at the position, corresponding to two sides of the transmission gear 619, at the top end of the transverse plate 612, a rack 620 is rotatably connected at the position, corresponding to one end of the rotating plate 617, the inner wall of the sleeve 618 is connected with a lifting rod 621 through threads, stirring blades 622 are fixedly sleeved at equal intervals at the position, outside the lifting rod 621 corresponding to the position, inside the mixing cylinder 5, in order to transmit power, the outer side of the transmission wheel 614 is attached to the outer side of the friction strip 615, the axis of the sleeve 618 and the axis of the mixing drum 5 are located on the same vertical line, one end of the rack 620 is meshed and connected with the outer side of the transmission wheel 619, the two driving motors 601 rotate in the same direction, the signal output end of the travel switch 623 is connected with the input end of the driving motor 601, and the signal output end of the touch switch 624 is connected with the input end of the driving motor 601;

a stalling discharge mechanism 7 is arranged on the inner wall of the discharge channel 3, and the stalling discharge mechanism 7 comprises a fixed ring 701, a movable rod 702, a movable ring 703, a tensioning spring 704, a connecting rod 705, a shaft seat 706, a vertical rod 707, a cover plate 708, an electromagnet 709, a metal plate 710, a groove 711, an annular baffle 712, a sliding plate 713, an outer magnetic plate 714, a metal block 715, a telescopic spring 716, a guide wheel 717, a belt 718 and a bump 719;

the bottom of the inner wall of the discharge channel 3 is embedded and clamped with a fixed ring 701, the top end of the fixed ring 701 is movably connected with a movable rod 702 at equal intervals, the bottom end of the movable rod 702 penetrates through the bottom end of the fixed ring 701, a movable ring 703 is cast at the bottom end of the movable rod 702, a tension spring 704 is sleeved at the position, corresponding to the position between the fixed ring 701 and the movable ring 703, on the outer side of the movable rod 702, a connecting rod 705 is welded on the inner wall of the movable ring 703 at equal intervals, a shaft seat 706 is fixedly connected at the other end of the connecting rod 705, a vertical rod 707 is rotatably connected at the top end of the shaft seat 706, a cover plate 708 is cast at the position, corresponding to the inner part of the mixing cylinder 5, at the top end of the vertical rod 707, an electromagnet 709 is fixedly connected at the top end of the movable rod 702 through a bolt, a metal plate 710 is fixedly connected at the position of the bottom end side of the mixing cylinder 5 through a bolt, a groove 711 is formed at the bottom end of the mixing cylinder 5, corresponding to the top part of the discharge channel 3, an annular baffle 712 is welded at the position of the bottom end of the mixing cylinder 5 corresponding to the outer side of the groove 711;

sliding plates 713 are slidably connected to the bottom end of the transverse plate 612 corresponding to the two sides of the rotating rod 613, one end of each sliding plate 713 is fixedly connected with an outer magnetic plate 714 through a bolt, metal blocks 715 are fixedly connected to the top end of the mixing drum 5 corresponding to the inner side of the outer magnetic plate 714 at equal intervals, a telescopic spring 716 is fixedly connected to the other end of each sliding plate 713, the other end of each telescopic spring 716 is fixedly connected with one end of the rotating frame 4, guide wheels 717 are mounted at the bottom end of the transverse plate 612 corresponding to the inner sides of the telescopic springs 716, belts 718 are fixedly connected to one ends of the sliding plates 713 corresponding to one sides of the guide wheels 717, lugs 719 are symmetrically and fixedly connected to the two ends of the reciprocating plate 607, one end of each lug 719 penetrates through one end of the transmission case 604, in order to reduce the impact force applied to the mixing drum 5, a filter screen is fixedly connected to the inner wall of the mixing drum 5, one end of the rotating frame 4 is fixedly connected with a control switch through a bolt, and the signal output end of the control switch is connected with the input end of the electromagnet 709, the bottom end of the cover plate 708 is attached to the inner wall of the mixing drum 5, and one end of the belt 718 is fixedly connected with one end of the bump 719 by bypassing the guide wheel 717;

the top end of the machine base 2 is fixedly connected with a support 9 through bolts at the position corresponding to the side of the filter cartridge 1, an instillation and homogenization mechanism 8 is arranged in the support 9, and the instillation and homogenization mechanism 8 comprises a vibration box 801, a magnetic strip 802, a sliding block 803, a placing frame 804, a supporting spring 805, a supporting block 806, a roller 807, a connecting plate 808, a rectangular frame 809, a rotating shaft 810, a cam 811, an embedded groove 812, a water pumping pipe 813, a water pump 814, a water wheel 815, a transmission shaft 816, a hose 817, a liquid storage box 818, a pull rod 819, a handle 820, a movable plate 821, a burette 822, a fixed rod 823, an injection pipe 824, a traction rope 825 and a floating ball 826;

a vibration box 801 is slidably connected to the bottom of the machine base 2 corresponding to the bottom of the support 9, magnetic strips 802 are symmetrically adhered to the inner wall of the vibration box 801 at equal intervals, sliders 803 are movably connected to the insides of the two magnetic strips 802, a placing rack 804 is fixedly connected to the other end of each slider 803 corresponding to the inside of the vibration box 801, supporting springs 805 are symmetrically and fixedly connected to the two ends of the placing rack 804, supporting blocks 806 are symmetrically and fixedly connected to the bottom of the placing rack 804 through bolts, rollers 807 are respectively rotated to the bottoms of the two supporting blocks 806, a connecting plate 808 is fixedly connected to the adjacent end of each supporting block 806, a rectangular frame 809 is fixedly connected between the two connecting plates 808 corresponding to the bottom of the placing rack 804 through bolts, a rotating shaft 810 is rotatably connected to the inner wall of the vibration box 801 corresponding to the inside of the rectangular frame 809, cams 811 are fixedly connected to the outer side of the rotating shaft 810 corresponding to the inside of the rectangular frame 809, and inserting grooves 812 are equidistantly formed in the top of the placing rack 804, in order to improve the mixing effect, a magnetic core is filled in the slider 803, the magnetic core and the two magnetic strips 802 repel each other, the other end of the supporting spring 805 is fixedly connected with the inner wall of the vibration box 801, the outer side of the roller 807 is attached to the bottom end of the vibration box 801, one side of the cam 811 is attached to the inner wall of the rectangular frame 809, and a measuring cup is embedded and mounted in the embedded groove 812;

a water pumping pipe 813 is welded on the outer side of the filter cartridge 1, a water pump 814 is fixedly connected on the outer side of the water pumping pipe 813, a water wheel 815 is rotatably connected on the inner wall of the water pumping pipe 813, one end of the water wheel 815 is fixedly connected with a transmission shaft 816, one end of the transmission shaft 816 penetrates through the water pumping pipe 813 and the vibration box 801 and is fixedly connected with one end of the rotating shaft 810, the top end of the water pumping pipe 813 is connected with a hose 817 through a thread, a liquid storage box 818 is slidably connected in the position corresponding to the top of the vibration box 801 in the support 9, pull rods 819 are symmetrically and fixedly connected at the top end of the liquid storage box 818 through bolts, the top ends of the two pull rods 819 penetrate through the top end of the support 9, handles 820 are respectively arranged at the top ends of the two pull rods 819, a movable plate 821 is movably connected in the liquid storage box 818, droppers 822 are equidistantly welded at the bottom end of the movable plate 821, fixed rods 823 are welded at the position corresponding to the top of the embedded groove 812 at the bottom end of the movable plate 821, the injection pipe 824 is pasted with a traction rope 825 on the inner wall, the other end of the traction rope 825 is fixedly connected with a floating ball 826, in order to conveniently inject the extracting solution into the measuring cup, the other end of the hose 817 is fixedly connected with one end of the liquid storage tank 818, a limiting block is welded on the inner wall of the liquid storage tank 818 corresponding to the bottom of the movable plate 821, a cavity is formed in the movable plate 821, a color developing agent is stored in the liquid storage tank 818 corresponding to the top of the movable plate 821, the fixed rod 823, the dropper 822, the injection pipe 824 and the embedded groove 812 are located on the same vertical line, the bottom of the fixed rod 823 is embedded into the dropper 822, a sealing plate is cast at the bottom of the fixed rod 823, the outer diameter of the sealing plate is larger than the inner diameter of the top of the dropper 822, the inner diameter of the hose 817 is larger than the inner diameter of the injection pipe 824, and the outer diameter of the floating ball 826 is larger than the inner diameter of the injection pipe 824.

The working principle and the using process of the invention are as follows: firstly, from the food to be detected, a part is taken out and put into the mixing drum 5, extracting solution is poured into the mixing drum 5, the driving motor 601 is started, the driving motor 601 drives the guide wheel 602 to rotate, so as to drive the mixing drum 5 to rotate, the extracting solution and the food in the mixing drum 5 are centrifugally rotated, the mixing effect is improved, the food is convenient to dissolve in the extracting solution, the sampling is convenient, meanwhile, through the matching of the driving gear 603 and the driven gear 606, in the rotating process of the mixing drum 5, the screw rod 605 is driven to rotate, the reciprocating plate 607 in the transmission box 604 is further pushed to ascend, the reciprocating plate 607 is attached to the top plate 608, the travel switch 623 is started, the driving motor 601 is reversely rotated, the mixing drum 5 is driven to reversely rotate, the food and the extracting solution are reversely stirred, the stirring and mixing effect is improved, and through the matching of the driving gear 603 and the driven gear 606, the screw rod 605 is driven to rotate, the reciprocating plate 607 descends to be in contact with the touch switch 624, the driving motor 601 is turned off, stirring is completed, in addition, the knob 610 drives the rotary drum 609 to rotate, the rotary drum 609 pushes the push rod 611 to move, the position of the top plate 608 in the transmission case 604 is adjusted, further, the rotation time of the mixing drum 5 is finely adjusted, the proper stirring time can be conveniently adjusted according to needs, and the adaptability of the device is improved;

then, through the cooperation of the friction strip 615, the driving wheel 614 and the rotating rod 613, an assembly is formed to transmit power, in the process of mixing and stirring, the rotating disc 616 is driven to rotate, the rack 620 is pulled to rotate through the transmission of the rotating plate 617, and then the power is further transmitted through the cooperation of the transmission gear 619, the sleeve 618 is driven to rotate, so that the lifting rod 621 and the stirring blade 622 are driven to be hammered in the mixing cylinder 5, food is conveniently smashed, the food is fully dissolved in the extracting solution, the extraction efficiency of a sample is improved, the convenience of the device is increased, and the detection time is shortened;

then, as the reciprocating plate 607 rises while the mixing drum 5 is rotating, the tension on the belt 718 is released, meanwhile, the sliding plate 713 and the outer magnetic plate 714 are pushed to move by the telescopic characteristic of the telescopic spring 716, the distance between the outer magnetic plate 714 and the metal block 715 at the top end of the mixing drum 5 is reduced, thereby increasing the suction force of the outer magnetic plate 714 to the metal block 715, increasing the resistance to the rotation of the mixing drum 5, decreasing the rotation speed of the mixing drum 5, further, when the driving motor 601 and the guide wheel 602 drive the mixing drum 5 to rotate reversely, the inertia of the mixing drum 5 is reduced, the stress borne by the output shaft of the driving motor 601 is reduced, the damage of the output shaft is avoided, the rotating effect is ensured, and, when reversed, pulls the belt 718 to rotate along the guide wheel 717 via the projection 719, the sliding plate 713 is pulled to reset, the suction force of the outer magnetic plate 714 to the metal block 715 is reduced, and the rotating efficiency of the mixing drum 5 is ensured;

then, after the stirring is finished, the electromagnet 709 is started through a control switch, so that the electromagnet 709 generates magnetic force, the electromagnet 709 is adsorbed at the bottom end of the metal plate 710, the mixing cylinder 5 is prevented from rotating, the mixing cylinder 5 can be rapidly stopped, meanwhile, the electromagnet 709 rises, the movable rod 702 and the movable ring 703 are driven to rise, a component is formed through the matching of the connecting rod 705, the shaft seat 706 and the vertical rod 707, the cover plate 708 is pushed to rise, the sealing of the groove 711 is relieved, the mixed sample solution is conveniently discharged into the filter cylinder 1 along the annular baffle 712, solid and liquid are separated through a filter screen in the filter cylinder 1, the convenience of the device is improved, the subsequent detection is convenient, in addition, through the stretching effect of the tensioning spring 704, when the electromagnet 709 is not electrified, the electromagnet 709 and the cover plate 708 are pulled to reset, and the mixing cylinder 5 is sealed;

then, the water pump 814 is started to pump the sample solution inside the filter cartridge 1 into the water pumping pipe 813, the sample solution is sent into the liquid storage tank 818 through the hose 817, and then the sample solution is injected into the measuring cup embedded in the tank 812 through the injection pipe 824, so that the sample solution collection effect is improved, the sample solution is prevented from contacting with the external environment, the subsequent detection effect is affected, and the detection accuracy is ensured, furthermore, in the process of extraction, because the inner diameter of the hose 817 is larger than that of the injection pipe 824, the speed of injecting the sample solution into the liquid storage tank 818 is larger than that of discharging, so that the solution sample is accumulated inside the liquid storage tank 818, the movable plate 821 is driven to ascend, the sealing of the fixed rod 823 and the sealing plate to the dropper 822 is released, the color developing agent is conveniently dropped into the measuring cup through the dropper 822, the convenience of the device is improved, and the contact of people with the solution is avoided, the pollution to the sample solution is avoided, the detection accuracy is ensured, after the measuring cup is filled with the solution, the floating ball 826 is pushed to rise, the floating ball 826 seals the injection pipe 824 and the dropper 822, then the water pump 814 rotates reversely, and the residual solution in the liquid storage tank 818 is sent back to the interior of the filter cartridge 1, so that the subsequent centralized collection is convenient;

finally, in the process of pumping by the water pump 814, a component is formed by the cooperation of the water wheel 815 and the transmission shaft 816, power is utilized to drive the rotating shaft 810 and the cam 811 to rotate, so that the rectangular frame 809 is pushed to slide in the vibration box 801, the placing frame 804 is driven to swing left and right in the vibration box 801 through the cooperation of the connecting plate 808 and the supporting block 806, the sample solution and the color developing agent in the measuring cup are vibrated and mixed, the mixing effect of the sample solution and the color developing agent is improved, the chromaticity comparison is convenient, the convenience of the device is improved, meanwhile, the slider 803 is suspended inside the vibration box 801 with the placing frame 804 through the repulsion of the magnetic strip 802 to the magnetic core inside the slider 803, the friction is reduced, the vibration effect of the placing frame 804 is improved to the greatest extent through the cooperation of the supporting spring 805, the mixing efficiency is improved, and in addition, the handle 820 is matched with the pull rod 819, the liquid storage tank 818 can be conveniently pulled up, the measuring cup can be conveniently taken out, the internal sample solution can be detected, and the content of heavy metal in food can be detected by contrasting the chroma.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable food detection method is characterized in that: the method comprises the following steps:

s1, putting the food to be detected into a mixing cylinder (5) on a rotating frame (4), and simultaneously adding the extracting solution into the mixing cylinder (5);

s2, stirring the extracting solution and the food sample by driving the hammer mechanism (6) to fully dissolve the food in the extracting solution;

s3, discharging the stirred solution into the filter cylinder (1) for storage through the stop-rotation discharge mechanism (7);

and S4, delivering the solution sample into the measuring cup through the instillation and homogenization mechanism (8), mixing the solution sample with the color developing agent, and then carrying out color ratio to detect whether the heavy metal content in the food exceeds the standard or not.

2. The portable food detection method according to claim 1, wherein: in S3, food residues in the solution are filtered through the filter screen in the filter cartridge (1) to separate solid from liquid, and in S4, when the solution sample is instilled, people are prevented from directly contacting the solution sample, and the pollution of the solution sample is reduced.

3. The portable food detection device of claim 1, wherein: the utility model discloses a pneumatic hammer is characterized in that cartridge filter (1) bottom fixedly connected with frame (2), cartridge filter (1) top middle part position department fixedly connected with discharge passage (3), discharge passage (3) outside top position department is through bolt symmetry fixedly connected with swivel mount (4), discharge passage (3) top corresponds and is connected with mixing drum (5) in the rotation of position department between two swivel mounts (4), and inside mixing drum (5) both sides position department symmetry that corresponds of swivel mount (4) is provided with drive and mallet smash mechanism (6), drive and mallet smash mechanism (6) include driving motor (601), guide pulley (602), driving gear (603), transmission case (604), lead screw (605), driven gear (606), round trip board (607), roof (608), rotary drum (609), knob (610), push rod (611), diaphragm (612), bull stick (613), The device comprises a transmission wheel (614), a friction strip (615), a turntable (616), a rotating plate (617), a sleeve (618), a transmission gear (619), a rack (620), a lifting rod (621), a stirring blade (622), a travel switch (623) and a touch switch (624);

the automatic transmission mechanism is characterized in that a driving motor (601) is symmetrically embedded and mounted at the bottom of the inner wall of the rotating frame (4), a guide wheel (602) is cast at one end of an output shaft of the driving motor (601), a driving gear (603) is fixedly sleeved at a position on one side of the outer side of the driving motor (601) corresponding to the guide wheel (602), a transmission case (604) is fixedly connected at a position on the top of the inner wall of the rotating frame (4) corresponding to the driving gear (603) through a bolt, a lead screw (605) is rotatably connected at a position on the inner side of the transmission case (604), the bottom end of the lead screw (605) penetrates through the bottom end of the transmission case (604), a driven gear (606) is cast at the bottom of the lead screw (605), a reciprocating plate (607) is connected at a position on the outer side of the transmission case (604) through a thread, and a top plate (608) is movably connected at a position on the outer side of the lead screw (605) corresponding to the top of the transmission case (604), the top end of the transmission box (604) is rotatably connected with a rotary drum (609), the top end of the rotary drum (609) is provided with a knob (610) in a melting casting mode, the bottom end of the rotary drum (609) penetrates through the top end of the transmission box (604), the bottom end of the rotary drum (609) is connected with a push rod (611) through threads, the bottom end of the push rod (611) is rotatably connected with the top end of a top plate (608), the bottom end of the top plate (608) is fixedly connected with a travel switch (623) through a bolt, and the bottom end of the transmission box (604) is fixedly connected with a touch switch (624) through a bolt;

the top end of the rotating frame (4) is fixedly connected with a transverse plate (612) through bolts, the bottom end of the transverse plate (612) is symmetrically and rotatably connected with rotating rods (613) corresponding to positions on two sides of the mixing drum (5), a transmission wheel (614) is cast at the bottom end of the rotating rods (613), a friction strip (615) is fixedly sleeved at a position on one side of the outer side of the mixing drum (5) corresponding to the transmission wheel (614), the top end of the rotating rods (613) penetrates through the top end of the transverse plate (612), a rotating disc (616) is cast at the position inside the transverse plate (612) at the top end of the rotating rods (613), a rotating plate (617) is rotatably connected at the position on the top side of the rotating disc (616), a sleeve (618) is rotatably connected at the position in the middle of the top end of the transverse plate (612), a transmission gear (619) is fixedly sleeved at the position on the outer side of the sleeve (618), racks (620) are slidably connected at positions on two sides of the transverse plate (612) corresponding to the transmission gear (619), the top avris position department of rack (620) is rotated with the one end of rotating plate (617) and is connected, there is lifter (621) sleeve (618) inner wall through threaded connection, the outside of lifter (621) corresponds mixing drum (5) internal position department equidistance and is fixed to be cup jointed stirring leaf (622).

4. The portable food detection device of claim 3, wherein: the notch has been seted up to mixing drum (5) outside bottom position department, the outside of guide pulley (602) is laminated with the top of notch mutually, and the outside of guide pulley (602) and the top of notch have all seted up anti-skidding line, mixing drum (5) inner wall passes through bolt equidistance fixedly connected with plectrum, driving gear (603) and driven gear (606) are bevel gear, and driving gear (603) and driven gear (606) intermeshing are connected, come and go board (607) one end and roof (608) one end all with swivel mount (4) inner wall sliding connection.

5. The portable food detection device of claim 3, wherein: the outside of drive wheel (614) is laminated with the outside of friction strip (615) mutually, the axle center of sleeve (618) is located same vertical line with the axle center of mixing drum (5), rack (620) one end is connected with drive gear (619) outside meshing, and two driving motor (601) are all the syntropy rotatory, the signal output part of travel switch (623) is connected with driving motor (601)'s input, the signal output part of touch switch (624) is connected with driving motor (601)'s input.

6. The portable food detection device of claim 3, wherein: a stalling discharge mechanism (7) is arranged on the inner wall of the discharge channel (3), and the stalling discharge mechanism (7) comprises a fixing ring (701), a movable rod (702), a movable ring (703), a tension spring (704), a connecting rod (705), a shaft seat (706), a vertical rod (707), a cover plate (708), an electromagnet (709), a metal plate (710), a groove (711), an annular baffle (712), a sliding plate 713, an outer magnetic plate (714), a metal block (715), a telescopic spring (716), a guide wheel (717), a belt (718) and a bump (719);

the discharge passage (3) inner wall bottom position department embedding joint has solid fixed ring (701), the top equidistance swing joint of solid fixed ring (701) has movable rod (702), and the bottom of movable rod (702) runs through the bottom of solid fixed ring (701), movable rod (702) bottom founding has movable ring (703), tensioning spring (704) has been cup jointed to position department between the corresponding solid fixed ring (701) in movable rod (702) outside and movable ring (703), the welding of movable ring (703) inner wall equidistance has connecting rod (705), connecting rod (705) other end fixedly connected with axle bed (706), axle bed (706) top rotates and is connected with montant (707), montant (707) top corresponds mixing drum (5) internal position department founding and has apron (708), bolt fixedly connected with electro-magnet (709) is passed through to the top of movable rod (702), a metal plate (710) is fixedly connected to the side position of the bottom end of the mixing cylinder (5) through a bolt, a groove (711) is formed in the position, corresponding to the top of the discharge channel (3), of the bottom end of the mixing cylinder (5), and an annular baffle (712) is welded in the position, corresponding to the outer side of the groove (711), of the bottom end of the mixing cylinder (5);

the equal sliding connection in diaphragm (612) bottom corresponds bull stick (613) both sides side position department has slide plate (713), bolt fixedly connected with outer magnetic plate (714) is passed through to slide plate (713) one end, mixing drum (5) top corresponds outer magnetic plate (714) inboard position department equidistance fixedly connected with metal block (715), slide plate (713) other end fixedly connected with expanding spring (716), the expanding spring (716) other end and swivel mount (4) one end fixed connection, diaphragm (612) bottom corresponds expanding spring (716) inboard position department and installs leading wheel (717), slide plate (713) one end corresponds leading wheel (717) one side position department fixedly connected with belt (718), come and go board (607) both ends symmetry fixedly connected with lug (719), and lug (719) one end runs through transmission case (604) one end.

7. The portable food detection device of claim 6, wherein: the inside fixedly connected with filter screen of cartridge filter (1), bolt fixedly connected with control switch is passed through to swivel mount (4) one end, control switch's signal output part is connected with the input of electro-magnet (709), the bottom of apron (708) is laminated with the inner wall of mixing drum (5) mutually, leading wheel (717) and lug (719) one end fixed connection are walked around to belt (718) one end.

8. The portable food detection device of claim 1, wherein: the top end of the machine base (2) is fixedly connected with a support (9) corresponding to the side position of the filter cartridge (1) through a bolt, an instillation and homogenization mechanism (8) is arranged inside the support (9), and the instillation and homogenization mechanism (8) comprises a vibration box (801), a magnetic strip (802), a sliding block (803), a placing frame (804), a supporting spring (805), a supporting block (806), a roller (807), a connecting plate (808), a rectangular frame (809), a rotating shaft (810), a cam (811), an embedded groove (812), a water pumping pipe (813), a water pump (814), a water wheel (815), a transmission shaft (816), a hose (817), a liquid storage box (818), a pull rod (819), a handle (820), a movable plate (821), a dropper (822), a fixing rod (823), an injection pipe (824), a traction rope (825) and;

the bottom of the machine base (2) is connected with a vibration box (801) in a sliding mode corresponding to the bottom of a support (9), magnetic strips (802) are symmetrically adhered to the inner wall of the vibration box (801) at equal intervals, sliders (803) are movably connected to the inner portions of the two magnetic strips (802), a placing rack (804) is fixedly connected to the other end of each slider (803) corresponding to the inner portion of the vibration box (801), supporting springs (805) are symmetrically and fixedly connected to the two ends of the placing rack (804), supporting blocks (806) are fixedly connected to the bottom of the placing rack (804) through bolts in a symmetrical mode, rollers (807) are rotated to the bottom of the two supporting blocks (806), connecting plates (808) are fixedly connected to the adjacent ends of the two supporting blocks (806), and rectangular frames (809) are fixedly connected to the bottom of the placing rack (804) between the two connecting plates (808) through bolts, a rotating shaft (810) is rotatably connected to the inner wall of the vibration box (801) at a position corresponding to the inner part of the rectangular frame (809), a cam (811) is fixedly sleeved at the outer side of the rotating shaft (810) at a position corresponding to the inner part of the rectangular frame (809), and embedded grooves (812) are formed in the top end of the placing frame (804) at equal intervals;

the filter cartridge is characterized in that a water pumping pipe (813) is welded on the outer side of the filter cartridge (1), a water pump (814) is fixedly connected on the outer side of the water pumping pipe (813), a water wheel (815) is connected to the inner wall of the water pumping pipe (813) in a rotating mode, one end of the water wheel (815) is fixedly connected with a transmission shaft (816), one end of the transmission shaft (816) penetrates through the water pumping pipe (813) and a vibration box (801) and is fixedly connected with one end of a rotating shaft (810), a hose (817) is connected to the top end of the water pumping pipe (813) through threads, a liquid storage box (818) is slidably connected to the position of the top of the vibration box (801) inside the support (9) correspondingly, pull rods (819) are symmetrically and fixedly connected to the top end of the liquid storage box (818) through bolts, the top ends of the two pull rods (819) penetrate through the top end of the support (9), a handle (820) is cast on the top end of the pull rods (819), and a movable plate (821) is movably connected to the inside the liquid storage box (818), the improved dropper type liquid storage tank is characterized in that droppers (822) are welded at the bottom end of the movable plate (821) at equal intervals, fixing rods (823) are welded at the top end of the liquid storage tank (818) corresponding to the top position of the droppers (822) at equal intervals, injection pipes (824) are welded at the bottom end of the liquid storage tank (818) corresponding to the top position of the embedded groove (812) at equal intervals, a traction rope (825) is pasted on the inner wall of each injection pipe (824), and a floating ball (826) is fixedly connected to the other end of each traction rope (825).

9. The portable food detection device of claim 8, wherein: the inside magnetic core that is filled of slider (803), magnetic core and two magnetic stripe (802) repulsions each other, the other end and the inner wall fixed connection of vibration case (801) of supporting spring (805), the outside and the bottom of vibration case (801) of gyro wheel (807) are laminated mutually, cam (811) one side is laminated mutually with the inner wall of rectangle frame (809), embedded groove (812) inside embedding is installed and is measured the cup.

10. The portable food detection device of claim 8, wherein: the other end of the hose (817) is fixedly connected with one end of the liquid storage tank (818), a limiting block is welded on the inner wall of the liquid storage tank (818) corresponding to the bottom of the movable plate (821), a cavity is formed in the movable plate (821), a color developing agent is stored in the liquid storage tank (818) corresponding to the top of the movable plate (821), the axes of the fixed rod (823), the dropper (822), the injection pipe (824) and the embedded groove (812) are all located on the same vertical line, the bottom end of the fixed rod (823) is embedded into the dropper (822), a sealing plate is cast at the bottom end of the fixed rod (823), the outer diameter of the sealing plate is larger than the inner diameter of the top end of the dropper (822), the inner diameter of the hose (817) is larger than the inner diameter of the injection pipe (824), and the outer diameter of the floating ball (826) is larger than the inner diameter of the injection pipe (824).