CN112683612B - Fruit pesticide residue content detection device and detection method - Google Patents
Fruit pesticide residue content detection device and detection method Download PDFInfo
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- CN112683612B CN112683612B CN202011380342.2A CN202011380342A CN112683612B CN 112683612 B CN112683612 B CN 112683612B CN 202011380342 A CN202011380342 A CN 202011380342A CN 112683612 B CN112683612 B CN 112683612B
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- soaking
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- 235000013399 edible fruits Nutrition 0.000 title claims abstract description 124
- 238000001514 detection method Methods 0.000 title claims abstract description 66
- 239000000447 pesticide residue Substances 0.000 title claims abstract description 58
- 238000002791 soaking Methods 0.000 claims abstract description 104
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 74
- 238000007664 blowing Methods 0.000 claims abstract description 10
- 210000002615 epidermis Anatomy 0.000 claims description 21
- 210000003813 thumb Anatomy 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 5
- 235000011389 fruit/vegetable juice Nutrition 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000575 pesticide Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 238000012271 agricultural production Methods 0.000 description 2
- 210000003491 skin Anatomy 0.000 description 2
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- VQXSOUPNOZTNAI-UHFFFAOYSA-N Pyrethrin I Natural products CC(=CC1CC1C(=O)OC2CC(=O)C(=C2C)CC=C/C=C)C VQXSOUPNOZTNAI-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000003619 algicide Substances 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000002837 defoliant Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229960002715 nicotine Drugs 0.000 description 1
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- HYJYGLGUBUDSLJ-UHFFFAOYSA-N pyrethrin Natural products CCC(=O)OC1CC(=C)C2CC3OC3(C)C2C2OC(=O)C(=C)C12 HYJYGLGUBUDSLJ-UHFFFAOYSA-N 0.000 description 1
- VJFUPGQZSXIULQ-XIGJTORUSA-N pyrethrin II Chemical compound CC1(C)[C@H](/C=C(\C)C(=O)OC)[C@H]1C(=O)O[C@@H]1C(C)=C(C\C=C/C=C)C(=O)C1 VJFUPGQZSXIULQ-XIGJTORUSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
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Abstract
The invention provides a fruit pesticide residue content detection device and a fruit pesticide residue content detection method, and relates to the technical field of pesticide residue content detection. The fruit pesticide residue content detection device comprises: the upper surface of the base is fixedly connected with a container with an opening at the upper end; the test paper clamping mechanism is connected with the base; the soaking bin is positioned above the base, is connected with the base through the bracket mechanism and is fixedly connected with a cushion pad; the water outlet mechanism is connected with the soaking bin; the fruit fixing mechanism is connected with the soaking bin; the blowing mechanism is connected with the soaking bin and comprises an air pump, an air inlet pipe, a connecting pipe, a switching bin, a one-way valve, an air guide pipe and an air outlet pipe. The fruit pesticide residue content detection method provided by the invention has the advantage of high detection accuracy.
Description
Technical Field
The invention relates to the technical field of pesticide residue content detection, in particular to a fruit pesticide residue content detection device and a fruit pesticide residue content detection method.
Background
And (3) the phenomenon that part of pesticide residues directly or indirectly remain in grains, vegetables, fruits, livestock products, aquatic products and soil and water bodies after pesticide application in agricultural production. The problem of pesticide residue is generated with mass production and wide use of pesticides. Before world war II, agricultural pesticides mainly contain inorganic substances such as arsenic, sulfur, lead, copper and the like, and organic substances such as pyrethrin, nicotine and the like from plants. During the second world war, synthetic organic pesticides began to be applied in agricultural production. Up to now, the annual yield of chemical pesticides in the world is about 200 ten thousand tons, and about 1000 synthetic compounds are used as pesticides, bactericides, algicides, pesticides, defoliants and the like. Pesticides, especially organic pesticides, are applied in large quantities, causing serious pesticide pollution problems, and becoming a serious threat to human health.
Fruit is a food that people often eat, in order to avoid a threat to the health of the human body, the pesticide residue detection of fruits is required; at present, when the pesticide residue is detected on the fruits, the fruits are soaked in water in a calmer mode, so that the pesticide residue on the surfaces of the fruits cannot be thoroughly dissolved in the water, and the detection accuracy is affected.
Therefore, it is necessary to provide a new method for detecting the pesticide residue content of fruits to solve the above technical problems.
Disclosure of Invention
In order to solve the technical problems, the invention provides a fruit pesticide residue content detection device and a fruit pesticide residue content detection method.
The invention provides a fruit pesticide residue content detection device, which comprises: the upper surface of the base is fixedly connected with a container with an opening at the upper end; the test paper clamping mechanism is connected with the base; the soaking bin is positioned above the base, is connected with the base through the bracket mechanism and is fixedly connected with a cushion pad; the water outlet mechanism is connected with the soaking bin; the fruit fixing mechanism is connected with the soaking bin; the air blowing mechanism is connected with the soaking bin and comprises an air pump, an air inlet pipe, a connecting pipe, a switching bin, a one-way valve, an air guide pipe and an air outlet pipe, wherein the air pump is fixedly connected to the outer surface of the soaking bin, the air inlet of the air pump is connected with the air inlet pipe, the air outlet of the air pump is connected with one end of the connecting pipe, the other end of the connecting pipe is connected with the air inlet of the switching bin, and the one-way valve is arranged on the connecting pipe; the conversion bin is fixedly connected with the outer surface of the soaking bin, the air outlet of the conversion bin is connected with one end of the air duct, the other end of the air duct penetrates through the soaking bin, and the air duct is positioned at one section of the soaking bin and is fixedly connected with a plurality of evenly distributed air outlet pipes.
Preferably, the fruit fixing mechanism comprises a top plate, an electric push rod, a mounting plate, a connecting rod, a turntable, a supporting plate and a rotating shaft, wherein the inner bottom wall of the soaking bin is connected with a plurality of rotating shafts, and the upper surface of the rotating shaft is fixedly connected with the supporting plate which is concentrically arranged; the outer surface fixedly connected with electric putter of soaking storehouse, electric putter's output fixedly connected with roof, the one end of the lower fixed surface connection connecting rod of roof, the other end fixedly connected with mounting panel of connecting rod, the lower surface connection of mounting panel has a plurality of turntables, and the turntables is located directly over the corresponding supporting disk.
Preferably, the rotating shaft is rotationally connected with the inner bottom wall of the soaking bin, and the rotary table is rotationally connected with the mounting plate.
Preferably, the fruit fixing mechanism further comprises a hard lug and a hard net pad, the hard net pad is fixedly connected to the upper surface of the supporting disc, and the hard lug is fixedly connected to the lower surface of the rotating disc.
Preferably, the fruit fixing mechanism further comprises a water wheel, the outer surface of the rotating shaft is fixedly connected with the water wheel which is concentrically arranged, and the air outlet direction of the air outlet pipe is tangential to the water wheel.
Preferably, the support mechanism comprises a driven wheel, an upright post, a belt, a driving wheel and a motor, wherein the motor is fixedly connected to the upper surface of the base, the driving wheel is fixedly connected to the output end of the motor, the upper surface of the base is rotationally connected with one end of the upright post, the other end of the upright post is fixedly connected with the lower surface of the soaking bin, the outer surface of the upright post is fixedly connected with the driven wheel which coaxially rotates, and the driven wheel is in transmission connection with the driving wheel through the belt.
Preferably, the water outlet mechanism comprises a water outlet pipe and a valve, the outer surface of the bottom of the soaking bin is fixedly connected with the water outlet pipe which is mutually communicated with the inside of the soaking bin, the valve is arranged on the water outlet pipe, and the water outlet of the water outlet pipe is positioned above the container.
Preferably, the test paper fixture includes connecting plate, pneumatic cylinder and thumb cylinder, the upper surface fixedly connected with of base is vertical to be set up the pneumatic cylinder, and the output fixedly connected with connecting plate of pneumatic cylinder, the lower surface fixedly connected with of connecting plate is used for the thumb cylinder of centre gripping test paper, and the thumb cylinder is located the container open-ended directly over.
The detection method of the fruit pesticide residue content detection device comprises the following specific steps:
a. Injecting clear water into the soaking bin, and completely placing a plurality of fruit samples to be detected on the supporting plate, wherein the fruit samples to be detected are immersed in the clear water at the moment, pesticide residues on the surfaces of the fruit samples are dissolved in the water, and the fruit samples do not need operations such as dicing, so that the detection difficulty of the device is reduced;
b. the electric push rod is used for driving the top plate to move downwards, the rotary table moves towards the supporting plate, fruit samples to be detected are extruded and fixed through the supporting plate and the rotary table, collision between the fruit samples during soaking is avoided, juice in the fruits enters the soaking bin, the influence on subsequent detection is avoided, and the accuracy of detection is further improved;
c. After the fruit sample is clamped and fixed, the air pump works to enable the air outlet pipe to give out air, and the air flow blown out by the air outlet pipe disturbs the solution in the soaking bin, so that the solution in the soaking bin can better wash the epidermis of the fruit sample, and pesticide residues on the epidermis of the fruit sample can be dissolved in the water in the soaking bin more thoroughly and quickly; meanwhile, the air flow blown out through the air outlet pipe can blow the water wheel to rotate, and the clamped and fixed fruit sample is driven to rotate through the rotation of the water wheel, so that the solution in the bubble bin can better wash the epidermis of the fruit sample, the detection accuracy is further improved, and the detection speed of the device is also improved;
d. When the air pump works, the driving wheel drives the driven wheel to rotate through the motor, so that the upright post and the soaking bin rotate, and the flow of the solution in the soaking bin is increased through the rotation of the soaking bin, so that the solution in the soaking bin can better wash the epidermis of the fruit sample, pesticide residues on the epidermis of the fruit sample can be more thoroughly and quickly dissolved in the water in the soaking bin, the detection accuracy is improved, and meanwhile, the detection speed of the device is improved;
e. After the air pump and the motor work for a period of time, the valve is opened, so that the mixed liquid mixed with pesticide residues on the surfaces of the fruit samples in the soaking bin flows into the container through the water outlet pipe;
f. The PH test paper for detecting the pesticide residues is clamped by the thumb cylinder through manpower, and is driven by the telescopic operation of the hydraulic cylinder, so that the connecting plate moves downwards, the PH test paper is inserted into a solution in the container, and whether the pesticide residues on the surfaces of fruit samples exceed the standard is detected by the PH test paper.
Compared with the related art, the fruit pesticide residue content detection method provided by the invention has the following beneficial effects:
1. according to the invention, the air pump works, so that the air outlet pipe is used for discharging air, and the air flow blown out by the air outlet pipe is used for disturbing the solution in the soaking bin, so that the solution in the soaking bin is used for better flushing the epidermis of the fruit sample, and pesticide residues on the epidermis of the fruit sample are more thoroughly and faster dissolved in the water in the soaking bin, thereby improving the detection accuracy and the detection speed of the device;
2. according to the invention, the air flow blown out through the air outlet pipe can blow the water wheel to rotate, and the clamped and fixed fruit sample is driven to rotate through the rotation of the water wheel, so that the solution in the bubble bin can better wash the epidermis of the fruit sample, thereby further improving the detection accuracy and simultaneously improving the detection speed of the device.
Drawings
FIG. 1 is a schematic diagram of a fruit pesticide residue detecting device according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of the test paper clamping mechanism shown in FIG. 1;
FIG. 3 is a schematic view of the blowing mechanism shown in FIG. 1;
FIG. 4 is a schematic cross-sectional view of the pesticide residue content detecting device for fruit detection shown in FIG. 1 in one direction;
FIG. 5 is a schematic cross-sectional view of the agricultural residue detecting apparatus for fruit detection shown in FIG. 1 in a second direction;
FIG. 6 is a schematic view of a part of the fruit fixing mechanism shown in FIG. 5;
Fig. 7 is a partial schematic view of the fruit fixing mechanism shown in fig. 4;
fig. 8 is a schematic structural view of the bracket mechanism shown in fig. 4.
Reference numerals in the drawings: 1. test paper clamping mechanism; 11. a connecting plate; 12. a hydraulic cylinder; 13. a thumb cylinder; 2. a container; 3. a base; 4. a cushion pad; 5. a fruit fixing mechanism; 51. a top plate; 52. an electric push rod; 53. a mounting plate; 54. a connecting rod; 55. a turntable; 56. a hard bump; 57. a hard mesh pad; 58. a water wheel; 59. a support plate; 59a, a rotating shaft; 6. a soaking bin; 7. an air blowing mechanism; 71. an air pump; 72. an air inlet pipe; 73. a connecting pipe; 74. a conversion bin; 75. a one-way valve; 76. an air duct; 77. an air outlet pipe; 8. a water outlet mechanism; 81. a water outlet pipe; 82. a valve; 9. a bracket mechanism; 91. driven wheel; 92. a column; 93. a belt; 94. a driving wheel; 95. an electric motor.
Detailed Description
The invention will be further described with reference to the drawings and embodiments.
Referring to fig. 1 to 8 in combination, fig. 1 is a schematic structural diagram of a preferred embodiment of a method for detecting pesticide residue in fruits according to the present invention; FIG. 2 is a schematic diagram of the test paper clamping mechanism shown in FIG. 1; FIG. 3 is a schematic view of the blowing mechanism shown in FIG. 1; FIG. 4 is a schematic cross-sectional view of the pesticide residue content detecting device for fruit detection shown in FIG. 1 in one direction; FIG. 5 is a schematic cross-sectional view of the agricultural residue detecting apparatus for fruit detection shown in FIG. 1 in a second direction; FIG. 6 is a schematic view of a part of the fruit fixing mechanism shown in FIG. 5; fig. 7 is a partial schematic view of the fruit fixing mechanism shown in fig. 4; fig. 8 is a schematic structural view of the bracket mechanism shown in fig. 4. The utility model provides a fruit pesticide residue content detection device includes: the device comprises a base 3, wherein the upper surface of the base 3 is fixedly connected with a container 2 with an opening at the upper end; the test paper clamping mechanism 1 is connected with the base 3; the soaking bin 6 is positioned above the base 3, the soaking bin 6 is connected with the base 3 through a bracket mechanism 9, and meanwhile, the buffer cushion 4 is fixedly connected in the soaking bin 6; the water outlet mechanism 8 is connected with the soaking bin 6; the fruit fixing mechanism 5 is connected with the soaking bin 6; and the blowing mechanism 7 is connected with the soaking bin 6.
In the specific implementation process, as shown in fig. 1, 3, 4 and 5, the air blowing mechanism 7 comprises an air pump 71, an air inlet pipe 72, a connecting pipe 73, a conversion bin 74, a one-way valve 75, an air guide pipe 76 and an air outlet pipe 77, wherein the air pump 71 is fixedly connected to the outer surface of the soaking bin 6, an air inlet of the air pump 71 is connected with the air inlet pipe 72, an air outlet of the air pump 71 is connected with one end of the connecting pipe 73, the other end of the connecting pipe 73 is connected with an air inlet of the conversion bin 74, and the one-way valve 75 is arranged on the connecting pipe 73; the conversion bin 74 is fixedly connected with the outer surface of the soaking bin 6, the air outlet of the conversion bin 74 is connected with one end of the air duct 76, the other end of the air duct 76 penetrates through the soaking bin 6, and the air duct 76 is positioned at one section of the soaking bin 6 and fixedly connected with a plurality of evenly distributed air outlet pipes 77.
It is necessary to explain that: when the device is used, clean water is injected into the soaking bin 6, and the fruit sample to be detected is clamped and fixed in the soaking bin 6 through the fruit fixing mechanism 5, at the moment, the clean water submerges the fruit sample to be detected, pesticide residues on the surface of the fruit sample are dissolved in water, and the fruit sample does not need operations such as dicing, so that the detection difficulty of the device is reduced;
It also needs to be stated that: after the fruit sample is clamped and fixed, the air pump 71 works, the air outlet pipe 77 is enabled to give off air, the air flow blown out through the air outlet pipe 77 disturbs the solution in the soaking bin 6, so that the solution in the soaking bin 6 is better to wash the epidermis of the fruit sample, pesticide residues on the epidermis of the fruit sample are thoroughly and rapidly dissolved in the water in the soaking bin 6, the detection accuracy is improved, and meanwhile the detection speed of the device is improved.
Referring to fig. 1, 4, 6 and 7, the fruit fixing mechanism 5 includes a top plate 51, an electric push rod 52, a mounting plate 53, a connecting rod 54, a turntable 55, a supporting disk 59 and a rotating shaft 59a, wherein the inner bottom wall of the soaking bin 6 is connected with a plurality of rotating shafts 59a, and the upper surface of the rotating shaft 59a is fixedly connected with the concentrically arranged supporting disk 59; the outer surface fixedly connected with electric putter 52 of soaking storehouse 6, electric putter's 52 output fixedly connected with roof 51, the one end of roof 51 lower surface fixed connection connecting rod 54, the other end fixedly connected with mounting panel 53 of connecting rod 54, the lower surface of mounting panel 53 is connected with a plurality of turntables 55, and turntables 55 are located directly over corresponding supporting disk 59.
It is necessary to explain that: through the flexible drive of electric putter 52 for roof 51 is at the downstream, makes carousel 55 to supporting disk 59 motion, extrudees through supporting disk 59 and carousel 55 and fixes the fruit sample that needs to detect, avoids fruit sample to bump each other when soaking, makes the juice in the fruit enter into soak in storehouse 6, avoids the influence to follow-up detection, and then improves the degree of accuracy that detects.
Referring to fig. 4, the rotating shaft 59a is rotatably connected with the inner bottom wall of the soaking bin 6, and the turntable 55 is rotatably connected with the mounting plate 53; the fruit fixing mechanism 5 further comprises a water wheel 58, the outer surface of the rotating shaft 59a is fixedly connected with the water wheel 58 which is concentrically arranged, and the air outlet direction of the air outlet pipe 77 is tangential to the water wheel 58.
It is necessary to explain that: the air flow blown out through the air outlet pipe 77 can blow the water wheel 58 to rotate, and through the rotation of the water wheel 58, the clamped and fixed fruit sample is driven to rotate, so that the solution in the bubble bin 6 can flush the epidermis of the fruit sample better, the detection accuracy is further improved, and meanwhile the detection speed of the device is improved.
Referring to fig. 6 and 7, the fruit fixing mechanism 5 further includes a hard bump 56 and a hard mesh pad 57, the hard mesh pad 57 is fixedly connected to the upper surface of the supporting plate 59, and the hard bump 56 is fixedly connected to the lower surface of the turntable 55.
It is necessary to explain that: the contact area between the turntable 55 and the supporting disk 59 and the fruit sample can be reduced through the hard protruding blocks 56 and the hard net pads 57, namely, the covered area of the surface of the fruit sample is reduced, the pesticide residues on the surface of the fruit sample are ensured to be more thoroughly dissolved in the water in the soaking bin 6, and the detection accuracy is improved.
Referring to fig. 4 and 8, the support mechanism 9 includes a driven wheel 91, a column 92, a belt 93, a driving wheel 94 and a motor 95, the upper surface of the base 3 is fixedly connected with the motor 95, the output end of the motor 95 is fixedly connected with the driving wheel 94, the upper surface of the base 3 is rotationally connected with one end of the column 92, the other end of the column 92 is fixedly connected with the lower surface of the soaking bin 6, the outer surface of the column 92 is fixedly connected with a driven wheel 91 which coaxially rotates, and the driven wheel 91 is in transmission connection with the driving wheel 94 through the belt 93.
It is necessary to explain that: the air pump 71 works, and simultaneously, the motor 95 works, so that the driving wheel 94 drives the driven wheel 91 to rotate, the upright post 92 and the soaking bin 6 rotate, the flow of the solution in the soaking bin 6 is increased through the rotation of the soaking bin 6, the surface skin of a fruit sample is better washed by the solution in the soaking bin 6, pesticide residues on the surface skin of the fruit sample are thoroughly and rapidly dissolved in water in the soaking bin 6, the detection accuracy is improved, and meanwhile, the detection speed of the device is improved.
Referring to fig. 4, the water outlet mechanism 8 includes a water outlet pipe 81 and a valve 82, the outer surface of the bottom of the soaking bin 6 is fixedly connected with the water outlet pipe 81 which is mutually communicated with the inside of the soaking bin, the valve 82 is installed on the water outlet pipe 81, and the water outlet of the water outlet pipe 81 is located above the container 2.
It is necessary to explain that: after the air pump 71 and the motor 95 work for a period of time, the valve 82 is opened, so that the mixed liquid mixed with pesticide residues on the surfaces of the fruit samples in the soaking bin 6 flows into the container 2 through the water outlet pipe 81.
Referring to fig. 1 and 2, the test paper clamping mechanism 1 includes a connecting plate 11, a hydraulic cylinder 12 and a thumb cylinder 13, the upper surface of the base 3 is fixedly connected with the hydraulic cylinder 12 which is vertically arranged, the output end of the hydraulic cylinder 12 is fixedly connected with the connecting plate 11, the lower surface of the connecting plate 11 is fixedly connected with the thumb cylinder 13 which is used for clamping test paper, and the thumb cylinder 13 is positioned right above the opening of the container 2.
It is necessary to explain that: the PH test paper for detecting the pesticide residues is clamped by the thumb cylinder through manpower, and is driven by the hydraulic cylinder 12 in a telescopic mode, so that the connecting plate 11 moves downwards, the PH test paper is inserted into the solution in the container 2, and whether the pesticide residues on the surfaces of the fruit samples exceed standards is detected through the PH test paper.
The detection method of the fruit pesticide residue content detection device comprises the following specific steps:
a. injecting clear water into the soaking bin 6, and completely placing a plurality of fruit samples to be detected on the supporting plate 59, wherein the fruit samples to be detected are immersed in the clear water at the moment, pesticide residues on the surfaces of the fruit samples are dissolved in the water, and the fruit samples do not need operations such as dicing, so that the detection difficulty of the device is reduced;
b. The electric push rod 52 is used for driving the top plate 51 to move downwards, the rotary table 55 moves towards the supporting plate 59, fruit samples to be detected are extruded and fixed through the supporting plate 59 and the rotary table 55, collision between the fruit samples during soaking is avoided, juice in the fruits enters the soaking bin 6, influence on subsequent detection is avoided, and then the detection accuracy is improved;
c. After the fruit sample is clamped and fixed, the air pump 71 works, so that the air outlet pipe 77 is used for discharging air, and the air flow blown out by the air outlet pipe 77 disturbs the solution in the soaking bin 6, so that the solution in the soaking bin 6 can flush the epidermis of the fruit sample better, and pesticide residues on the epidermis of the fruit sample can be dissolved in the water in the soaking bin 6 more thoroughly and quickly; meanwhile, the air flow blown out through the air outlet pipe 77 can blow the water wheel 58 to rotate, and the clamped and fixed fruit sample is driven to rotate through the rotation of the water wheel 58, so that the solution in the bubble bin 6 can better wash the epidermis of the fruit sample, the detection accuracy is further improved, and meanwhile, the detection speed of the device is improved;
d. when the air pump 71 works, the motor 95 works to drive the driven wheel 94 to rotate, so that the upright post 92 and the soaking bin 6 rotate, and the flow of the solution in the soaking bin 6 is increased through the rotation of the soaking bin 6, so that the solution in the soaking bin 6 can flush the epidermis of a fruit sample better, pesticide residues on the epidermis of the fruit sample can be dissolved in the water in the soaking bin 6 more thoroughly and faster, the detection accuracy is improved, and meanwhile, the detection speed of the device is improved;
e. After the air pump 71 and the motor 95 work for a period of time, the valve 82 is opened, so that the mixed liquid mixed with pesticide residues on the surfaces of the fruit samples in the soaking bin 6 flows into the container 2 through the water outlet pipe 81;
f. The PH test paper for detecting the pesticide residues is clamped by the thumb cylinder through manpower, and is driven by the hydraulic cylinder 12 in a telescopic mode, so that the connecting plate 11 moves downwards, the PH test paper is inserted into the solution in the container 2, and whether the pesticide residues on the surfaces of the fruit samples exceed standards is detected through the PH test paper.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (5)
1. Fruit pesticide residue content detection device, characterized by, include:
The device comprises a base (3), wherein the upper surface of the base (3) is fixedly connected with a container (2) with an opening at the upper end;
The test paper clamping mechanism (1), the test paper clamping mechanism (1) is connected with the base (3);
The soaking bin (6), the soaking bin (6) is located above the base (3), the soaking bin (6) is connected with the base (3) through the support mechanism (9), and meanwhile, the buffer cushion (4) is fixedly connected in the soaking bin (6);
the water outlet mechanism (8), the water outlet mechanism (8) is connected with the soaking bin (6);
the fruit fixing mechanism (5), the said fruit fixing mechanism (5) is connected with soaking the storehouse (6);
The air blowing mechanism (7), the air blowing mechanism (7) is connected with the soaking bin (6), the air blowing mechanism (7) comprises an air pump (71), an air inlet pipe (72), a connecting pipe (73), a conversion bin (74), a one-way valve (75), an air guide pipe (76) and an air outlet pipe (77), the air pump (71) is fixedly connected to the outer surface of the soaking bin (6), an air inlet of the air pump (71) is connected with the air inlet pipe (72), an air outlet of the air pump (71) is connected with one end of the connecting pipe (73), the other end of the connecting pipe (73) is connected with the air inlet of the conversion bin (74), and the one-way valve (75) is arranged on the connecting pipe (73); the conversion bin (74) is fixedly connected with the outer surface of the soaking bin (6), the air outlet of the conversion bin (74) is connected with one end of the air duct (76), the other end of the air duct (76) penetrates through the soaking bin (6), and a section of the air duct (76) located in the soaking bin (6) is fixedly connected with a plurality of evenly distributed air outlet pipes (77);
the fruit fixing mechanism (5) comprises a top plate (51), an electric push rod (52), a mounting plate (53), a connecting rod (54), a rotary table (55), a supporting disc (59) and a rotating shaft (59 a), wherein the inner bottom wall of the soaking bin (6) is connected with a plurality of rotating shafts (59 a), and the upper surface of the rotating shaft (59 a) is fixedly connected with the supporting disc (59) which is concentrically arranged; the outer surface of the soaking bin (6) is fixedly connected with an electric push rod (52), the output end of the electric push rod (52) is fixedly connected with a top plate (51), the lower surface of the top plate (51) is fixedly connected with one end of a connecting rod (54), the other end of the connecting rod (54) is fixedly connected with a mounting plate (53), the lower surface of the mounting plate (53) is connected with a plurality of turntables (55), and the turntables (55) are located right above corresponding supporting plates (59); the fruit fixing mechanism (5) further comprises a hard lug (56) and a hard net pad (57), the hard net pad (57) is fixedly connected to the upper surface of the supporting disc (59), the hard lug (56) is fixedly connected to the lower surface of the rotary disc (55), the fruit fixing mechanism (5) further comprises a water wheel (58), the water wheel (58) which is concentrically arranged is fixedly connected to the outer surface of the rotary shaft (59 a), and the air outlet direction of the air outlet pipe (77) is tangential to the water wheel (58);
the support mechanism (9) comprises a driven wheel (91), a stand column (92), a belt (93), a driving wheel (94) and a motor (95), wherein the motor (95) is fixedly connected to the upper surface of the base (3), the driving wheel (94) is fixedly connected to the output end of the motor (95), the upper surface of the base (3) is rotationally connected with one end of the stand column (92), the other end of the stand column (92) is fixedly connected with the lower surface of the soaking bin (6), the outer surface of the stand column (92) is fixedly connected with the driven wheel (91) which coaxially rotates, and the driven wheel (91) is in transmission connection with the driving wheel (94) through the belt (93).
2. The fruit pesticide residue content detection device according to claim 1, wherein the rotating shaft (59 a) is rotatably connected with the inner bottom wall of the soaking bin (6), and the rotary table (55) is rotatably connected with the mounting plate (53).
3. The fruit pesticide residue content detection device according to claim 2, wherein the water outlet mechanism (8) comprises a water outlet pipe (81) and a valve (82), the water outlet pipe (81) which is mutually communicated with the inside of the soaking bin (6) is fixedly connected to the outer surface of the bottom of the soaking bin, the valve (82) is arranged on the water outlet pipe (81), and a water outlet of the water outlet pipe (81) is positioned above the container (2).
4. The fruit pesticide residue content detection device according to claim 3, wherein the test paper clamping mechanism (1) comprises a connecting plate (11), a hydraulic cylinder (12) and a thumb cylinder (13), the upper surface of the base (3) is fixedly connected with the hydraulic cylinder (12) which is vertically arranged, the output end of the hydraulic cylinder (12) is fixedly connected with the connecting plate (11), the lower surface of the connecting plate (11) is fixedly connected with the thumb cylinder (13) which is used for clamping test paper, and the thumb cylinder (13) is positioned right above the opening of the container (2).
5. The method for detecting the pesticide residue content of fruits according to claim 4, which is characterized by comprising the following specific steps:
a. injecting clear water into the soaking bin (6), and completely placing a plurality of fruit samples to be detected on the supporting plate (59), wherein the clear water submerges the fruit samples to be detected, pesticide residues on the surfaces of the fruit samples are dissolved in the water, and the fruit samples do not need operations such as dicing, so that the detection difficulty of the device is reduced;
b. the electric push rod (52) is used for driving the top plate (51) to move downwards, the rotary table (55) moves towards the supporting plate (59), fruit samples to be detected are extruded and fixed through the supporting plate (59) and the rotary table (55), collision between the fruit samples during soaking is avoided, juice in the fruits enters the soaking bin (6), influence on subsequent detection is avoided, and then the accuracy of detection is improved;
c. After the fruit sample is clamped and fixed, the air pump (71) works, so that the air outlet pipe (77) is used for discharging air, and the air flow blown out by the air outlet pipe (77) disturbs the solution in the soaking bin (6), so that the solution in the soaking bin (6) can better wash the epidermis of the fruit sample, and pesticide residues on the epidermis of the fruit sample can be thoroughly and quickly dissolved in the water in the soaking bin (6); meanwhile, the air flow blown out through the air outlet pipe (77) can blow the water wheel (58) to rotate, and the clamped and fixed fruit sample is driven to rotate through the rotation of the water wheel (58), so that the solution in the bubble bin (6) can better wash the epidermis of the fruit sample, the detection accuracy is further improved, and meanwhile, the detection speed of the device is improved;
d. When the air pump (71) works, the motor (95) works, so that the driving wheel (94) drives the driven wheel (91) to rotate, the upright post (92) and the soaking bin (6) rotate, the solution in the soaking bin (6) flows through the rotation of the soaking bin (6), the solution in the soaking bin (6) is enabled to better wash the epidermis of a fruit sample, pesticide residues on the epidermis of the fruit sample are thoroughly and quickly dissolved in water in the soaking bin (6), the detection accuracy is improved, and meanwhile the detection speed of the device is improved;
e. After the air pump (71) and the motor (95) work for a period of time, the valve (82) is opened, so that the mixed liquid mixed with pesticide residues on the surfaces of fruit samples in the soaking bin (6) flows into the container (2) through the water outlet pipe (81);
f. The PH test paper for detecting the pesticide residues is clamped through the thumb cylinder by manpower, and is driven by the hydraulic cylinder (12) in a telescopic mode, so that the connecting plate (11) moves downwards, the PH test paper is inserted into a solution in the container (2), and whether the pesticide residues on the surfaces of fruit samples exceed standards is detected through the PH test paper.
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