CN112098334B - Fruit vegetables pesticide residue detection device - Google Patents
Fruit vegetables pesticide residue detection device Download PDFInfo
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- CN112098334B CN112098334B CN202011290037.4A CN202011290037A CN112098334B CN 112098334 B CN112098334 B CN 112098334B CN 202011290037 A CN202011290037 A CN 202011290037A CN 112098334 B CN112098334 B CN 112098334B
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
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Abstract
The invention discloses a fruit and vegetable pesticide residue detection device, which comprises the following components: including the mounting bracket, set up first winding up roller, the setting of the lower extreme and the detection box of setting between first winding up roller and second winding up roller at the right side of the mounting bracket lower extreme, the winding has the detection membrane paper on the first winding up roller. The invention can mix the fruit and vegetable solution with the solvent, extract the pesticide in the fruit and vegetable, the solution extracted the pesticide drops on the detection membrane paper, the detection membrane paper after changing color is detected by the color sensor in the detection box, and the detection result is displayed by the display screen; the sample solution can be guided into the small storage tank for storage after the sample solution is dripped onto the detection film paper by the spray head, and in the process, the sample solution impacts a water wheel in the liquid discharge pipe to rotate, so that the cleaning brush is driven to rotate to wipe the residue of the sample solution on the spray head, and the subsequent detection of other sample solutions is prevented.
Description
Technical Field
The invention relates to the technical field of pesticide detection equipment, in particular to a device for detecting pesticide residues on fruits and vegetables.
Background
The pesticide residue is a generic term for a pesticide parent, derivative, metabolite, degradation product and impurity remaining in the environment, organism and food after the pesticide is used. The pesticide residue of vegetables exceeds the standard, and the pesticide residue is mainly the pesticide prohibited in vegetable production in some countries, and acute poisoning accidents of people and livestock can be caused by food caused by pesticide residue.
Most of the existing pesticide detection equipment does not have the function of cleaning the spray head, and the sample solution remained on the spray head can drop on the detection test paper, so that the detection accuracy of the subsequent sample solution is influenced.
Disclosure of Invention
In order to improve the problems, the invention is embodied by the following technical scheme: a fruit vegetables pesticide residue detection device: the detection device comprises a mounting frame, a first winding roller arranged at the left lower end of the mounting frame, a second winding roller arranged at the right lower end of the mounting frame and a detection box arranged between the first winding roller and the second winding roller, wherein detection film paper is wound on the first winding roller, one end, far away from the first winding roller, of the detection film paper penetrates through the detection box and is wound on the second winding roller, a mixing reaction box is arranged above the detection film paper, the central shaft of the second winding roller is fixedly connected with the output shaft of a rotating motor at the back of the mounting frame, and a support frame is arranged at the bottom of the mixing reaction box;
the mixed reaction box comprises a mixed reaction box body, a sliding clapboard is connected inside the mixed reaction box body in a sliding way, the sliding partition plate divides the interior of the mixing reaction box body into a material mixing chamber on the left side and a pressurizing chamber on the right side, a material guide hopper for guiding the fruit and vegetable sample solution is arranged at the left upper end of the mixing reaction box body, the output port of the material guide hopper is communicated with the material mixing chamber, the medicine adding port at the top of the material mixing chamber is connected with the medicine box at the back of the mounting rack through a medicine feeding pipe, a small pump for pumping pesticide solvent is arranged in the pesticide box, the bottom of the material mixing chamber is respectively provided with a first solution outlet, a spray head is arranged on the first solution outlet, a water filling port is also arranged at the top of the material mixing chamber, the water injection port is connected with a water storage tank through a water supply pipe, and a small pump is also arranged in the water storage tank;
the second solution outlet is connected with one end of a liquid discharge pipe, the other end of the liquid discharge pipe is respectively connected with a sewage discharge pipe and a liquid guide pipe, an output port of the sewage discharge pipe extends into a wastewater pool at the back of the mounting frame, and an output port of the liquid guide pipe extends into a small storage tank at the back of the mounting frame;
the high-pressure material mixing chamber is characterized in that a high-pressure push-pull device is arranged in the pressurizing chamber and comprises a high-pressure tank and a piston movably arranged in the high-pressure tank, one side, close to the material mixing chamber, of the piston is connected with a push-pull rod, the push-pull rod penetrates through the high-pressure tank and is connected with a sliding partition plate, a sealing ring made of a rubber material is arranged on the frame position of the sliding partition plate, and a limiting block used for preventing the sliding partition plate from excessively compressing the material mixing chamber is arranged at the right end of the material mixing chamber.
As a preferred embodiment of the present invention, a plurality of paddles are disposed in the material mixing chamber, a transmission rod of each paddle is connected to an output end of a driving mechanism at the back of the mixing reaction box, the driving mechanism includes a driving wheel and a driven wheel rotatably disposed at the back of the mixing reaction box, the driving wheel and the driven wheel are connected by a belt, and a central shaft of the driving wheel is fixedly connected to an output shaft of the driving motor.
As a preferred embodiment of the present invention, an air inlet is formed at the upper right end of the high-pressure tank, the air inlet is connected to an inflator pump through an air pipe, a plurality of blowing heads are arranged on one surface of the sliding partition plate, which is located on the material mixing chamber, an air outlet is formed at the left side of the high-pressure tank, and the air outlet is connected to the blowing heads through an air pipe.
As a preferred embodiment of the present invention, the air pipe, the blow-off pipe, the liquid guide pipe, the output port of the material guide hopper, the dosing port of the material mixing chamber, and the first solution outlet of the material mixing chamber are all provided with electric valves.
As a preferred embodiment of the present invention, a nozzle cleaning device is disposed at the bottom of the mixing reaction tank, the nozzle cleaning device includes a water wheel rotatably disposed inside the liquid discharge pipe, the water wheel is fixedly connected to one end of a transmission rod, the transmission rod is rotatably disposed on the mounting frame, the other end of the transmission rod is fixedly connected to a driving bevel gear, the driving bevel gear is engaged with a first driven bevel gear, the first driven bevel gear is fixedly disposed on a rotating rod, and a cleaning brush for cleaning the nozzle is disposed on the rotating rod.
As a preferred embodiment of the present invention, the cleaning brush includes a gear box slidably connected to the mounting frame and a brush head driven by a gear set in the gear box, the left side and the right side of the gear box are respectively rotatably connected with a second driven bevel gear and a third driven bevel gear, the second driven bevel gear and the third driven bevel gear are both engaged with a transmission bevel gear at the top of the gear box, the central axes of the second driven bevel gear and the third driven bevel gear are both connected with the brush head, and the spray head is located between the two brush heads.
In a preferred embodiment of the present invention, the rotating rod is rotatably connected with a sleeve, the sleeve is connected with a movable end of a second electric cylinder, and a fixed end of the second electric cylinder is arranged at the bottom of the mixing reaction box.
As a preferred embodiment of the present invention, the detection box includes a detection cylinder with a cross section in a "square" shape, a color sensor and an auxiliary illuminating lamp, the color sensor and the auxiliary illuminating lamp are disposed on the top of the detection cylinder, a display is disposed on the top of the detection cylinder, a processor and a display screen are disposed in the display, the color sensor is electrically connected to an input end of the processor, an output end of the processor is electrically connected to the display screen, the processor is STM32F407IGT6, and the color sensor is TCS 3200.
As a preferred embodiment of the invention, the detection membrane paper comprises detection paper and a transparent protective membrane adhered to the bottom surface of the detection paper, the detection paper comprises a plurality of detection units, each detection unit comprises a pesticide detection area and a dirt absorption area, the pesticide detection area comprises pesticide detection test paper and a drainage membrane adhered to the top surface of the pesticide detection test paper, the top of the drainage membrane is provided with a conical drainage groove, and the bottom of the drainage groove is provided with a through hole.
In a preferred embodiment of the present invention, the drainage membrane is made of a transparent polypropylene material, the transparent protective film is a release film made of a transparent PET material, and the dirt absorption area is provided with a water absorption layer made of a super absorbent resin material.
The fruit and vegetable pesticide residue detection device provided by the invention has the following three beneficial effects:
firstly, the fruit and vegetable solution can be poured into the mixing reaction box to be mixed with the solvent in the mixing reaction box, the pesticide in the fruits and vegetables can be extracted, the solution from which the pesticide is extracted is dripped on the detection film paper, the detection film paper after color change is driven by the first roller and the second roller to move into the detection box, the detection is carried out through the color sensor in the detection box, and the detection result is displayed through the display screen.
Secondly, after the solvent and the fruit and vegetable solution are mixed in the material mixing chamber, the electric valves on the material mixing chamber are closed, the air valve on the high-pressure tank is opened, the air pump inflates the high-pressure tank to enable the piston to move leftwards, the push-pull rod is matched to drive the sliding partition plate to compress the inner space of the material mixing chamber, the internal pressure of the material mixing chamber is increased, and the fruit and vegetable solution and the solvent can be better and more fully mixed under the action of high pressure.
Thirdly, after the sample solution is dripped onto the detection membrane paper by the nozzle, the electric valve on the drain pipe is opened, the other electric valves are closed, the sample solution is guided into the small storage tank to be stored, in the process, the sample solution impacts the water wheel in the liquid discharge pipe to rotate, the driving bevel gear and the first driven bevel gear are driven to rotate, the cleaning brush is driven to rotate to wipe the residue of the sample solution on the nozzle, and the subsequent detection of other sample solutions is prevented.
Fourthly, the drainage membrane in the detection membrane paper can lead the sample solution dripped on the drainage membrane by the nozzle to be better and intensively gathered on the pesticide detection test paper for color reaction; the dirt absorption area can not only separate each pesticide detection area, but also absorb the sputtered redundant sample solution, so that the influence on the adjacent pesticide detection areas is prevented; when the detection membrane paper is rolled and stored on the second winding roller, the transparent protective membrane can separate the pesticide detection test paper of the outer ring from the pesticide detection test paper of the inner ring, so that the pesticide detection test paper of the outer ring and the pesticide detection test paper of the inner ring are prevented from contacting with each other, the respective colors are prevented from influencing each other, and the storage of pesticide data is influenced.
Drawings
FIG. 1 is a schematic overall view of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic view of the structure of the cleaning brush of the present invention;
FIG. 4 is a top view of the detection membrane of the present invention;
fig. 5 is a schematic structural diagram of a side surface of the detection membrane paper of the present invention.
In the figure: 1. a mounting frame; 2. a first winding roller; 3. detecting the membrane paper; 4. a detection cartridge; 5. a second winding roller; 6. a support frame; 7. A material guide hopper; 8. a mixing reaction box; 9. a spray head cleaning device;
301. a pesticide detection area; 302. a dirt suction area; 303. a transparent protective film; 3011. pesticide detection test paper; 3012. a drainage membrane;
801. a mixing reaction box body; 802. a stirring paddle; 803. a high-pressure push-pull device; 804. a sliding partition plate; 805. a spray head;
901. a cleaning brush; 902. a first driven bevel gear; 903. a drive bevel gear; 904. a transmission rod; 905. a water wheel; 906. a sleeve; 907. a second lifting electric cylinder; 9011. a second driven bevel gear; 9012. a drive bevel gear; 9013. a third driven bevel gear; 9014. a brush head.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments 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 embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a fruit vegetables pesticide residue detection device: the film detection device comprises an installation frame 1, a first winding roller 2 arranged at the left lower end of the installation frame 1, a second winding roller 5 arranged at the right lower end of the installation frame 1 and a detection box 4 arranged between the first winding roller 2 and the second winding roller 5, wherein detection film paper 3 is wound on the first winding roller 2, one end, far away from the first winding roller 2, of the detection film paper 3 penetrates through the detection box 4 and is wound on the second winding roller 5, a mixing reaction box 8 is arranged above the detection film paper 3, the central shafts of the first winding roller 2 and the second winding roller 5 are fixedly connected with an output shaft of a rotating motor at the back of the installation frame 1, and a support frame 6 is arranged at the bottom of the mixing reaction box 8; pouring the fruit and vegetable solution after being crushed and stirred into a mixing reaction box 8 to be mixed with a solvent in the mixing reaction box, extracting pesticides in fruits and vegetables, dripping the solution extracted with the pesticides on the detection film paper 3, moving the detection film paper 3 after being discolored into a detection box 4 under the driving of a first winding roller 2 and a second winding roller 5, and detecting through a sensor in the detection box 4;
the mixing reaction box 8 comprises a mixing reaction box body 801, a sliding partition 804 is connected inside the mixing reaction box body 801 in a sliding manner, the sliding partition 804 divides the inside of the mixing reaction box body 801 into a left material mixing chamber and a right pressurizing chamber, a guide hopper 7 for guiding and conveying fruit and vegetable sample solution is arranged at the upper left end of the mixing reaction box body 801, an output port of the guide hopper 7 is communicated with the material mixing chamber, a medicine feeding port at the top of the material mixing chamber is connected with a medicine box at the back of the mounting rack 1 through a medicine feeding pipe, a small pump for pumping and conveying pesticide solvent is arranged inside the medicine box, a first solution outlet is respectively arranged at the bottom of the material mixing chamber, a spray nozzle 805 is arranged on the first solution outlet, a water filling port is also arranged at the top of the material mixing chamber, an electric valve is arranged on the water filling port, and the water filling port is connected with a water storage tank through a water supply pipe, a small pump is also arranged in the water storage tank; the fruit and vegetable solution after being crushed and stirred is guided into a material mixing chamber through a material guide hopper 7, and the solvent of the pesticide in the chemical box is pumped into the material mixing chamber through a small pump; the water injection port is provided with a spray head which can spray cleaning water to clean the material mixing chamber;
the second solution outlet is connected with one end of a liquid discharge pipe, the other end of the liquid discharge pipe is respectively connected with a sewage discharge pipe and a liquid guide pipe, the output port of the sewage discharge pipe extends into a waste water pool at the back of the mounting frame 1, and the output port of the liquid guide pipe extends into a small storage tank at the back of the mounting frame 1; the detected sample solution is conveyed to a small storage tank through a liquid guide pipe for storage, then a spray head sprays cleaning water to wash the material mixing chamber, and the cleaned wastewater is discharged into a wastewater tank through a drain pipe;
a high-pressure push-pull device 803 is arranged in the pressurizing chamber, the high-pressure push-pull device 803 comprises a high-pressure tank and a piston movably arranged in the high-pressure tank, one side of the piston close to the material mixing chamber is connected with a push-pull rod, the push-pull rod penetrates through the high-pressure tank and is connected with a sliding partition 804, a sealing ring made of rubber material is arranged at the frame position of the sliding partition 804, and a limiting block for preventing the sliding partition 804 from excessively compressing the material mixing chamber is arranged at the right end of the material mixing chamber; after the solvent and the fruit and vegetable solution are mixed in the material mixing chamber, electric valves on the material mixing chamber are all closed, an air valve on the high-pressure tank is opened, the air pump inflates air into the high-pressure tank to enable the piston to move leftwards, the push-pull rod is matched to drive the sliding partition plate 804 to compress the inner space of the material mixing chamber, the internal pressure of the material mixing chamber is increased, the fruit and vegetable solution and the solvent can be better and more fully mixed under the action of high pressure, the air pump continues to inflate the high-pressure tank, and the air valve on the high-pressure tank is closed after the internal pressure of the high-pressure tank is far greater than the internal pressure of the compressed material mixing chamber.
As a preferred embodiment of the present invention, a plurality of paddles 802 are disposed in the material mixing chamber, a transmission rod of each paddle 802 is connected to an output end of a driving mechanism at the back of the mixing reaction box 801, the driving mechanism includes a driving wheel and a driven wheel rotatably disposed at the back of the mixing reaction box 801, the driving wheel and the driven wheel are connected by a belt, and a central shaft of the driving wheel is fixedly connected to an output shaft of a driving motor; the fruit and vegetable solution and the solvent can be better and faster mixed by stirring of the stirring paddle 802 to extract the pesticide.
As a preferred embodiment of the invention, an air inlet is formed at the upper right end of the high-pressure tank, an electric valve is arranged on the air inlet, the air inlet is opened during inflation and pressurization and closed during stopping inflation and pressurization, the air inlet is connected with an inflator pump through an air pipe, a plurality of blowing heads are arranged on one surface of the sliding partition 804 positioned in the material mixing chamber, an air outlet is formed in the left side of the high-pressure tank, and the air outlet is connected with the blowing heads through the air pipe; when stirring fruit vegetables solution and solvent, the tracheal electric valve of slip baffle 804 is opened, and the gas in the high-pressure tank is impressed in the material mixing chamber, to its inside bubble of blowing, makes better mixture of solvent and fruit vegetables solution under the effect of bubble.
As a preferred embodiment of the present invention, the air pipe, the blow-off pipe, the liquid guide pipe, the output port of the material guide hopper 7, the dosing port of the material mixing chamber, and the first solution outlet of the material mixing chamber are all provided with electric valves.
As a preferred embodiment of the present invention, a nozzle cleaning device 9 is disposed at the bottom of the mixing reaction tank 8, the nozzle cleaning device 9 includes a water wheel 905 rotatably disposed inside the liquid discharge pipe, the water wheel 905 is fixedly connected with one end of a transmission rod 904, the transmission rod 904 is rotatably disposed on the mounting frame 1, the other end of the transmission rod 904 is fixedly connected with a driving bevel gear 903, the driving bevel gear 903 is engaged with a first driven bevel gear 902, the first driven bevel gear 902 is fixedly disposed on the rotating rod, and a cleaning brush 901 for cleaning the nozzle 805 is disposed on the rotating rod; after the spray head 805 drops the sample solution onto the detection membrane paper 3, the electric valves on the drain pipe are opened first, and the other electric valves are closed to guide the sample solution into the small storage tank for storage, in the process, the sample solution impacts the water wheel 905 inside the liquid discharge pipe to rotate, the driving bevel gear 903 and the first driven bevel gear 902 are driven to rotate, and then the cleaning brush 901 is driven to rotate to wipe the residue of the sample solution on the spray head 805, so that the subsequent detection of other sample solutions is prevented.
As a preferred embodiment of the present invention, the cleaning brush 901 includes a gear box slidably connected to the mounting frame 1 and a brush head 9014 driven by a gear set in the gear box, the left side and the right side of the gear box are respectively rotatably connected with a second driven bevel gear 9011 and a third driven bevel gear 9013, the second driven bevel gear 9011 and the third driven bevel gear 9013 are both engaged with a transmission bevel gear 9012 at the top of the gear box, central shafts of the second driven bevel gear 9011 and the third driven bevel gear 9013 are both connected with the brush head 9014, and the spray head 805 is located between the two brush heads 9014; the rotating rod is connected with a central shaft of the second driven bevel gear 9011, drives the second driven bevel gear 9011 to rotate, and is matched with the second driven bevel gear 9011 and the third driven bevel gear 9013 to rotate together, so that the two brush heads 9014 are driven to rotationally wipe the spray head 805.
In a preferred embodiment of the present invention, the rotating rod is rotatably connected with a sleeve 906, the sleeve 906 is connected with a movable end of a second lifting electric cylinder 907, and a fixed end of the second lifting electric cylinder 907 is arranged at the bottom of the mixing reaction box 8; when the wiping nozzle 805 is cleaned, the second lifting electric cylinder 907 drives the rotating rod to descend until the driving bevel gear 903 is meshed with the first driven bevel gear 902; after the wiping is finished, the second lifting electric cylinder 907 drives the rotating rod to ascend, so that the cleaning brush 901 is separated from the spray head 805, and the subsequent spraying of the sample solution by the spray head is prevented from being influenced.
As a preferred embodiment of the present invention, the detection box 4 includes a detection cylinder with a cross section in a "square" shape, a color sensor and an auxiliary illuminating lamp, the color sensor and the auxiliary illuminating lamp are disposed on the top of the detection cylinder, a display is disposed on the top of the detection cylinder, a processor and a display screen are disposed in the display, the color sensor is electrically connected to an input end of the processor, an output end of the processor is electrically connected to the display screen, the processor is STM32F407IGT6, and the color sensor is TCS 3200; the color sensor detects the color on the detection film paper 3, transmits the signal to the processor for analysis and processing, and displays the processed detection result on the display.
As a preferred embodiment of the invention, the detection film paper 3 comprises detection paper and a transparent protective film 303 bonded on the bottom surface of the detection paper, the detection paper is composed of a plurality of detection units, each detection unit comprises a pesticide detection area 301 and a dirt absorption area 302, the pesticide detection area 301 comprises pesticide detection test paper 3011 and a drainage film 3012 bonded on the top surface of the pesticide detection test paper 3011, the top of the drainage film 3012 is provided with a conical drainage groove, and the bottom of the drainage groove is provided with a through hole; the drainage membrane 3012 can make the sample solution dropped on the drainage membrane 3012 from the nozzle 805 better converge on the pesticide detection test paper 3011 to perform color reaction; the dirt absorption area 302 can not only separate each pesticide detection area 301, but also absorb the sputtered excessive sample solution to prevent the influence on the adjacent pesticide detection areas 301; when the detection film paper 3 is rolled and stored on the second roll 5, the transparent protective film 303 can separate the pesticide detection test paper 3011 on the outer ring from the pesticide detection test paper 3011 on the inner ring, and prevent the pesticide detection test paper 3011 on the outer ring from contacting the pesticide detection test paper 3011 on the inner ring, which causes mutual influence of respective colors and influences storage of pesticide data.
In a preferred embodiment of the present invention, the drainage membrane 3012 is made of transparent polypropylene material, the transparent protective film 303 is a release film made of transparent PET material, and the dirt absorbing area 302 is provided with a water absorbing layer made of super absorbent resin material.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides a fruit vegetables pesticide residue detection device which characterized in that: the device comprises a mounting frame (1), a first winding roller (2) arranged at the left lower end of the mounting frame (1), a second winding roller (5) arranged at the right lower end of the mounting frame (1) and a detection box (4) arranged between the first winding roller (2) and the second winding roller (5), wherein detection membrane paper (3) is wound on the first winding roller (2), one end, far away from the first winding roller (2), of the detection membrane paper (3) penetrates through the detection box (4) and is wound on the second winding roller (5), a mixing reaction box (8) is arranged above the detection membrane paper (3), central shafts of the first winding roller (2) and the second winding roller (5) are respectively and fixedly connected with an output shaft of a rotating motor at the back of the mounting frame (1), and a support frame (6) is arranged at the bottom of the mixing reaction box (8);
the mixed reaction box (8) comprises a mixed reaction box body (801), a sliding partition plate (804) is connected inside the mixed reaction box body (801) in a sliding mode, the mixed reaction box body (801) is divided into a left material mixing chamber and a right pressurizing chamber by the sliding partition plate (804), a guide hopper (7) used for guiding and conveying fruit and vegetable sample solution is arranged at the upper left end of the mixed reaction box body (801), an output port of the guide hopper (7) is communicated with the material mixing chamber, a dosing port at the top of the material mixing chamber is connected with a chemical box at the back of the mounting frame (1) through a dosing pipe, a small pump used for pumping pesticide solvent is arranged inside the chemical box, a first solution outlet is formed in the bottom of the material mixing chamber, a spray head (805) is arranged on the first solution outlet, and a water injection port is further formed in the top of the material mixing chamber, the water injection port is provided with an electric valve and is connected with a water storage tank through a water supply pipe, and a small pump is also arranged in the water storage tank;
a second solution outlet is formed in the bottom of the material mixing chamber and is connected with one end of a liquid discharge pipe, the other end of the liquid discharge pipe is respectively connected with a sewage discharge pipe and a liquid guide pipe, an output port of the sewage discharge pipe extends into a wastewater pool at the back of the mounting frame (1), and an output port of the liquid guide pipe extends into a small storage tank at the back of the mounting frame (1);
a high-pressure push-pull device (803) is arranged in the pressurizing chamber, the high-pressure push-pull device (803) comprises a high-pressure tank and a piston movably arranged in the high-pressure tank, one side, close to the material mixing chamber, of the piston is connected with a push-pull rod, the push-pull rod penetrates through the high-pressure tank and is connected with a sliding partition plate (804), a sealing ring made of rubber materials is arranged on the frame of the sliding partition plate (804), and a limiting block used for preventing the sliding partition plate (804) from excessively compressing the material mixing chamber is arranged at the right end of the material mixing chamber;
the bottom of the mixing reaction box (8) is provided with a spray head cleaning device (9), the spray head cleaning device (9) comprises a water wheel (905) which is rotatably arranged in the liquid discharge pipe, the water wheel (905) is fixedly connected with one end of a transmission rod (904), the transmission rod (904) is rotatably arranged on the mounting frame (1), the other end of the transmission rod (904) is fixedly connected with a driving bevel gear (903), the driving bevel gear (903) is meshed with a first driven bevel gear (902), the first driven bevel gear (902) is fixedly arranged on a rotating rod, a cleaning brush (901) for cleaning a spray head (805) is arranged on the rotating rod, the cleaning brush (901) comprises a gear box which is in sliding connection with the mounting frame (1) and a brush head (9014) which is driven by a gear set in the gear box, the left side and the right side of the gear box are respectively and rotatably connected with a second driven bevel gear (9011) and a third driven bevel gear (9013), the second driven bevel gear (9011) and the third driven bevel gear (9013) are meshed with a transmission bevel gear (9012) at the top of the gear box, the rotating rod is connected with a central shaft of the second driven bevel gear (9011), central shafts of the second driven bevel gear (9011) and the third driven bevel gear (9013) are connected with brush heads (9014), the spray head (805) is located between the two brush heads (9014), the rotating rod is rotatably connected with a sleeve (906), the sleeve (906) is connected with the movable end of a second lifting electric cylinder (907), and the fixed end of the second lifting electric cylinder (907) is arranged at the bottom of the mixing reaction box (8).
2. The fruit and vegetable pesticide residue detection device as claimed in claim 1, wherein a plurality of stirring paddles (802) are arranged in the material mixing chamber, a transmission rod of each stirring paddle (802) is connected with an output end of a driving mechanism at the back of the mixing reaction box body (801), each driving mechanism comprises a driving wheel and a driven wheel which are rotatably arranged at the back of the mixing reaction box body (801), the driving wheel and the driven wheel are connected through a belt, and a central shaft of the driving wheel is fixedly connected with an output shaft of a driving motor.
3. The fruit and vegetable pesticide residue detection device as claimed in claim 1, wherein an air inlet is formed in the upper right end of the high-pressure tank, the air inlet is connected with an inflator pump through an air pipe, a plurality of blowing heads are arranged on one surface, located in the material mixing chamber, of the sliding partition plate (804), an air outlet is formed in the left side of the high-pressure tank, and the air outlet is connected with the blowing heads through air pipes.
4. The device for detecting pesticide residue on fruits and vegetables according to claim 3, wherein the air pipe, the blow-off pipe, the liquid guide pipe, the output port of the material guide hopper (7), the dosing port of the material mixing chamber and the first solution outlet of the material mixing chamber are all provided with electric valves.
5. The fruit and vegetable pesticide residue detection device according to claim 1, wherein the detection box (4) comprises a detection cylinder with a cross section in a square-shaped structure, a color sensor and an auxiliary illuminating lamp, the color sensor and the auxiliary illuminating lamp are arranged at the top of the detection cylinder, a display is arranged at the top of the detection cylinder, a processor and a display screen are arranged in the display, the color sensor is electrically connected with the input end of the processor, the output end of the processor is electrically connected with the display screen, the processor is STM32F407IGT6, and the color sensor is TCS 3200.
6. The fruit and vegetable pesticide residue detection device according to claim 1, wherein the detection film paper (3) comprises detection paper and a transparent protection film (303) adhered to the bottom surface of the detection paper, the detection paper comprises a plurality of detection units, each detection unit comprises a pesticide detection area (301) and a dirt absorption area (302), the pesticide detection area (301) comprises pesticide detection test paper (3011) and a drainage membrane (3012) adhered to the top surface of the pesticide detection test paper (3011), the top of the drainage membrane (3012) is provided with a conical drainage groove, and the bottom of the drainage groove is provided with a through hole.
7. The fruit and vegetable pesticide residue detection device as claimed in claim 6, wherein the drainage membrane (3012) is made of transparent polypropylene material, the transparent protection film (303) is a release film made of transparent PET material, and the dirt absorption area (302) is provided with a water absorption layer made of super absorbent resin material.
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| CN116400062B (en) * | 2023-06-08 | 2023-08-18 | 首都儿科研究所附属儿童医院 | Muscle weakness inspection device |
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| CN207557119U (en) * | 2017-11-30 | 2018-06-29 | 奇台县农业技术推广中心 | A kind of garden stuff pesticide residue detection device |
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