CN113916631A

CN113916631A - Fruit and vegetable pesticide residue detection method based on food safety

Info

Publication number: CN113916631A
Application number: CN202111205771.0A
Authority: CN
Inventors: 冯成金
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-01-11

Abstract

The invention relates to the technical field of pesticide residue detection, in particular to a fruit and vegetable pesticide residue detection method based on food safety, which comprises the following steps: putting the fruits and vegetables into detection equipment, and continuously pouring an extract into the detection equipment; positioning the fruits and vegetables through detection equipment and carrying out rotary crushing, so that residual pesticides inside the fruits and vegetables are dissolved in the extraction liquid, the extraction liquid contains the pesticides of the whole fruits and vegetables, and the fruit and vegetable residues are discontinuously extruded and filtered in the crushing process, so that the mixed liquid of the extraction liquid and the pesticides is separated from the fruit and vegetable residues through filtration; the fruit and vegetable residues are automatically exposed through detection equipment, and the pesticide residues in the equipment are automatically cleaned synchronously; this scheme is through carrying out extrusion separation to remaining pesticide in the fruit vegetables residue, has further improved the accuracy of extracting the inside residual pesticide of fruit vegetables, is favorable to improving the accuracy that detects.

Description

Fruit and vegetable pesticide residue detection method based on food safety

Technical Field

The invention relates to the field of pesticide residue detection, in particular to a fruit and vegetable pesticide residue detection method based on food safety.

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 prior art discloses partial invention patents related to pesticide residue detection, namely Chinese patent with application number 202110758960.4, and discloses a fruit and vegetable pesticide residue detection device, which comprises a workbench, a rotating mechanism and a cleaning mechanism; the rotating mechanism is arranged on one side, away from the ground, of the workbench and comprises a lifting plate, a lifting assembly is arranged between the lifting plate and the workbench, the middle of the lifting plate is rotatably connected with a rotating shaft, a rotating disc is arranged at one end, close to the workbench, of the rotating shaft, a fixed seat is arranged in the middle of the rotating disc, and a stirring rod is arranged at one end, close to the workbench, of the fixed seat; the cleaning mechanism comprises a cleaning tank arranged on the workbench, a leakage frame is arranged inside the cleaning tank, and an ejection assembly is arranged between the leakage frame and the workbench.

Most of existing detection methods are methods for cleaning or crushing fruits and vegetables, so that pesticides inside the fruits and vegetables are dissolved in an extraction liquid, and then the pesticides in the extraction liquid are detected, but when existing detection equipment is used for crushing the fruits and vegetables, residues of the fruits and vegetables are in a loose state, part of residual pesticides in the residues are difficult to take out for detection, accuracy of detection results is easy to affect, part of pesticides are easy to contaminate inside processing equipment inside the detection equipment after the fruits and vegetables are crushed once, the existing detection equipment is difficult to timely clean inside the processing equipment, and next detection is easy to affect.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a fruit and vegetable pesticide residue detection method based on food safety.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: a fruit and vegetable pesticide residue detection method based on food safety is characterized by comprising the following steps: the detection method comprises the following steps:

putting fruits and vegetables into detection equipment, and continuously pouring an extract into the detection equipment;

positioning and rotating and crushing the fruits and vegetables through detection equipment, so that residual pesticides inside the fruits and vegetables are dissolved in the extraction liquid, the extraction liquid contains the pesticides of the whole fruits and vegetables, and the fruit and vegetable residues are intermittently extruded and filtered in the crushing process, so that the fruit and vegetable residues can be intermittently loosened and compacted, and the mixed liquid of the extraction liquid and the pesticides is separated from the fruit and vegetable residues through filtration;

automatically exposing the fruit and vegetable residues through detection equipment, and synchronously self-cleaning pesticide residues in the equipment;

wherein, the detection device in the first step to the third step comprises a support table, support legs are arranged at four corners of the bottom of the support table, a partition board is jointly fixed among the four support legs, a round through groove is arranged on the top surface of the supporting table, a treatment barrel is connected inside the round through groove in a sliding way, a crushing mechanism for crushing the fruits and vegetables is arranged in the treatment cylinder, an extrusion positioning mechanism for positioning the fruits and vegetables is arranged above the treatment cylinder, a filter opening is arranged below the side wall of the treatment barrel, a filter screen is fixedly embedded in the filter opening, one side of the filter screen is provided with a collecting and detecting mechanism which is used for collecting and detecting the mixed liquid of the extraction liquid and the pesticide, a cleaning mechanism is arranged below the treatment cylinder and used for driving the treatment cylinder to move up and down and cleaning the inner wall of the treatment cylinder; when the fruit and vegetable crushing device works, most of the existing detection methods are that pesticides in fruits and vegetables are dissolved in an extraction liquid and then the pesticides in the extraction liquid are detected in a mode of cleaning or crushing the fruits and vegetables, but when existing detection equipment is used for crushing the fruits and vegetables, residues of the fruits and vegetables are in a loose state, part of residual pesticides in the residues are difficult to take out for detection, the accuracy of a detection result is easy to influence, and after the fruits and vegetables are crushed once, part of pesticides are easy to contaminate in processing equipment in the detection equipment, the existing detection equipment is difficult to clean in time in the processing equipment, and the influence on next detection is easy to cause, the technical scheme can solve the problems, and the specific working mode is that the fruits and vegetables are placed in a processing barrel, the extraction liquid is manually poured into the processing barrel, and then the fruits and vegetables are extruded and positioned through an extrusion positioning mechanism, carry out the breakage to the fruit vegetables through broken mechanism, make the inside pesticide of fruit vegetables can mix with the extract, thereby make holistic pesticide in the fruit vegetables that contains in the extract, make the testing result more accurate, collect the mixed liquid of extract and pesticide and detect through collecting detection mechanism, after detecting the completion, it washs in step to move down through the drive treatment section of thick bamboo of clearance mechanism, in time clear up remaining pesticide or fruit vegetables residue to the treatment section of thick bamboo inner wall, be favorable to maintaining the accuracy of testing result next time, the treatment section of thick bamboo moves down to the top surface and after bottom plate top surface parallel and level, make the fruit vegetables residue on the bottom plate expose, be convenient for manually clear up the fruit vegetables residue.

Preferably, the crushing mechanism comprises a third motor, the third motor is fixed on the bottom surface of the partition plate, an output shaft of the third motor penetrates through the partition plate and extends out, a support rod is fixed on the output shaft, the top end of the support rod penetrates into the treatment barrel and is fixed with a bottom plate, the side wall of the bottom plate is in sliding seal with the inner wall of the treatment barrel, and a crushing blade is fixed on the top surface of the bottom plate; the during operation drives the bracing piece through the third motor and rotates, drives bottom plate and crushing blade through the bracing piece and rotates in step to carry out the breakage to the inside fruit vegetables of handling a section of thick bamboo, make the inside pesticide of fruit vegetables can mix with the extract, thereby make contain holistic pesticide in the fruit vegetables in the extract, make the testing result more accurate.

Preferably, the extrusion positioning mechanism comprises an electric push rod, the electric push rod is fixed on the top surface of the partition plate, a piston rod of the electric push rod penetrates through the top surface of the support table and extends out of the support table, a first support plate is fixed on the top surface of the first support plate, a rotating plate is rotatably connected to the top surface of the first support plate and is positioned right above the treatment cylinder, a second support plate is fixedly connected to the top surface of the first support plate through a connecting rod, a first motor is fixed on the bottom surface of the second support plate, the tail end of an output shaft of the first motor is fixed at the circle center position of the top surface of the rotating plate, a first extrusion plate is fixed below the rotating plate through a connecting rod, and a plurality of positioning rods are uniformly fixed on the bottom surface of the first extrusion plate; during operation, put into the inside back of a processing section of thick bamboo with the fruit vegetables, through starting electric putter, drive first backup pad and second backup pad and press the downstream, and drive first stripper plate and locating lever downstream in step, extrude the location to the fruit vegetables, at the in-process synchronous start first motor of downstream, it rotates to drive the rotor plate through first electronic, drive first stripper plate through the rotor plate and rotate, drive the synchronous rotation of locating lever through first stripper plate, the rotation direction that makes the locating lever is opposite with the rotation direction of broken blade, from being favorable to making the more complete of fruit vegetables breakage, be convenient for the inside pesticide of fruit vegetables and extract mix.

Preferably, the bottom surface of the first extrusion plate is provided with an intermittent extrusion mechanism, the intermittent extrusion mechanism is used for performing intermittent extrusion on fruit and vegetable residues, the intermittent extrusion mechanism comprises a movable plate and a sliding groove, the movable plate is arranged under the first extrusion plate, a plurality of fourth springs are jointly fixed between the movable plate and the first extrusion plate, the top surface of the movable plate is provided with a first mounting hole matched with a positioning rod, the positioning rod penetrates through the first mounting hole and extends out, the side wall of the movable plate is provided with four groups of guide grooves, the four groups of guide grooves are mutually communicated and form a closed loop, each group of guide grooves is formed by communicating a convex groove and a groove, the edge of the bottom of the movable plate is provided with an annular inclined plane, the sliding groove is arranged in the side wall of the treatment barrel, and a sliding block is connected in the sliding groove in the horizontal direction in the sliding groove in a sliding manner, a plurality of first springs are jointly fixed between the sliding block and the inner wall of the sliding groove, a pushing block is fixed at the top end of the sliding block, a guide pin is fixed at the bottom end of the sliding block, the pushing block and the guide pin both penetrate through the side wall of the treatment barrel in a sliding manner and extend into the treatment barrel, and inclined surfaces are respectively arranged on the top surface and the bottom surface of the pushing block; when the fruit and vegetable crusher works, when existing detection equipment is used for crushing fruits and vegetables, fruit and vegetable residues are in a loose state, part of residual pesticides in the residues are difficult to take out for detection, and the detection result accuracy is easily influenced, the technical scheme can solve the problems and can be specifically used as follows, in the process that a first extrusion plate moves downwards, a movable plate is driven to move downwards, inclined surfaces are arranged on the bottom surfaces of the movable plate and the first extrusion plate, an inclined surface is also arranged on the bottom surface of a pushing block, in the process that the movable plate and the first extrusion plate move downwards, when the movable plate or the first extrusion plate impacts the pushing block downwards, the pushing block slides towards the inside of a sliding groove under the guiding action of an annular inclined surface, so that the pushing block cannot influence the falling of the movable plate and the first extrusion plate, in the process that the first extrusion plate moves to the lower part of the pushing block, when the fourth spring is compressed and then continuously extruded by the first extrusion plate, the fourth spring can push the movable plate to extrude the pushing block and then move to one side of the pushing block, when the first extrusion plate continuously moves downwards but does not act on the pushing block, the movable plate is limited by the top end of the guide pin, when the first extrusion plate continuously moves downwards and extrudes the pushing block, the fourth spring can be pressed to push the movable plate, under the action of the annular inclined surface at the bottom of the movable plate, the movable plate pushes the guide pin into the sliding groove and moves to the side surface of the guide pin, because the movable plate is always rotated in the treatment barrel, when the guide groove on the movable plate rotates to a position matched with the guide pin, the guide pin is inserted into the guide groove under the action of the first spring, and under the cooperation of the convex groove, the groove and the guide pin and the rotation action of the movable plate, the movable plate can move up and down and forth in the treatment barrel, the fruit and vegetable residues in the treatment cylinder are extruded discontinuously, so that in the process of crushing the fruit and vegetable residues, the loosening and the compaction are carried out discontinuously, which is beneficial to separating the pesticide in the loosened fruit and vegetable residues from the fruit and vegetable residues and improving the accuracy of the detection result, and because the fourth spring is arranged between the movable plate and the first extrusion plate, the movable plate is elastically connected with the first extrusion plate, which is beneficial to providing enough space for abdicating in the process of the movable plate moving up and down, and after the crushing is finished, the first extrusion plate is pulled upwards, when the first extrusion plate rises to be contacted with the pushing block, because the bottom surface of the pushing block is provided with the inclined surface, under the guiding action of the inclined surface, the pushing block moves towards the inside of the sliding groove, so that the guiding pin is driven to be separated from the guiding groove, and the first extrusion plate and the movable plate integrally continue to move upwards and are separated from the treatment barrel.

Preferably, a third extrusion plate is arranged below the movable plate, a plurality of second mounting holes matched with the positioning rods are formed in the third extrusion plate, damping rings are fixed in the second mounting holes, the positioning rods are inserted in the damping rings, and a plurality of second springs are jointly fixed between the third extrusion plate and the movable plate; the during operation, when the inside fruit vegetables residue of a processing section of thick bamboo is more, rigidity extrusion leads to the condition of filter screen damage to take place easily, this technical scheme can solve above problem, specific working method is as follows, through setting up second spring and third stripper plate, at the extruded in-process of secondary, carry out the elastic extrusion to the inside fruit vegetables of a processing section of thick bamboo, when the inside fruit vegetables residue of a processing section of thick bamboo is more, be favorable to providing sufficient space of stepping down, prevent at the extrusion in-process, cause the damage to the filter screen, and through setting up the damping ring, at the ascending in-process of locating lever, in time clear up the fruit vegetables residue on the locating lever outer wall and strike off, be favorable to maintaining the accuracy of next testing result.

Preferably, the collecting and detecting mechanism comprises a collecting barrel, a detector and a guide block, the collecting barrel is fixed on the top surface of the supporting table, the side wall of the collecting barrel is in sliding seal with the outer wall of the processing barrel, a feed inlet is formed in one side of the collecting barrel and is communicated with the filtering port, the detector is fixed on the top surface of the partition plate, the detector is fixedly communicated with the inside of the collecting barrel through a guide pipe, the guide block is fixed on the top surface of the supporting table, the guide block is in sliding seal with the outer wall of the processing barrel, an inclined surface is formed in the top surface of the guide block, and the height of the inclined surface, close to one end of the processing barrel, is higher than that of the other end of the processing barrel; during operation, the mixed liquid of extraction liquid and pesticide flows to the inside back of collecting vessel from the filter screen flow direction, flows to inside the pipe along the inclined plane of guide block to inside flowing to the detector along the pipe, with the contact of the detection head of detector, detect the mixed liquid of extraction liquid and pesticide through the detector, accomplish and detect the function.

Preferably, an opening and closing mechanism is arranged in the feeding port, when the treatment barrel descends, the opening and closing mechanism is used for plugging and sealing the feeding port, when the treatment barrel ascends, the opening and closing mechanism is used for opening the feeding port, the opening and closing mechanism comprises a plugging door, connecting pieces are fixed on two sides of the top end of the plugging door, connecting strips are inserted in the connecting pieces, the connecting strips are fixed on the top of the collection barrel, a third spring is fixed between the connecting pieces and the top surface of the collection barrel, a limiting piece is fixed on the top surface of the plugging door, and the limiting piece is in contact with the top surface of the treatment barrel; the during operation, when handling a section of thick bamboo and descending, draw at the action of gravity of shutoff door self and pulling of third spring and act on down, make the shutoff door along the connecting strip downstream, and carry out the shutoff to the feed inlet and seal, through setting up the third spring, make the shutoff door remain throughout and draw the trend of pulling that moves downstream, be favorable to maintaining the sealing stability of shutoff door, at the in-process of taking out fruit vegetables residue, through sealing the feed inlet, keep apart the inside extract of feed inlet and fruit vegetables residue, prevent inside the fruit vegetables residue falls into the collecting vessel, cause the influence to the testing result.

Preferably, the cleaning mechanism comprises a cleaning box, a threaded sleeve, a cleaning ring, a limiting rod and a connecting block, the connecting block is fixed on the outer wall of the treatment cylinder, the limiting rod is fixed on the top surface of the support table, one end of the connecting block is slidably sleeved on the outer wall of the limiting rod, the cleaning box is fixed on the top surface of the partition plate, the cleaning ring is fixed on the supporting rod, the threaded sleeve is in threaded connection with the outer wall of the treatment cylinder, the threaded sleeve is rotatably connected to the bottom surface of the support table, a second gear is sleeved and fixed on the outer wall of the threaded sleeve, a third gear is meshed with one side of the second gear, a second motor is coaxially fixed at the bottom of the third gear, and the second motor is fixed on the side wall of the cleaning box; when the device works, after the treatment cylinder is used, partial pesticide and fruit and vegetable residues are easy to remain inside, if the device is not cleaned in time, the device is easy to influence next detection, the technical scheme can solve the problems, in a specific working mode, by starting the second motor, driving the third gear to rotate, driving the second gear to rotate through the third gear, driving the threaded sleeve to rotate through the second gear, driving the threaded sleeve to rotate outside the treatment cylinder, moving the treatment cylinder to the inside of the cleaning box under the action of threads, filling cleaning solution into the cleaning box, moving the treatment cylinder outside the cleaning ring during moving, cleaning the inner wall of the treatment cylinder through the cleaning ring, cleaning the residual pesticide or fruit and vegetable residues on the inner wall of the treatment cylinder in time, being beneficial to maintaining the accuracy of next detection result, driving the second motor to reversely rotate after cleaning is completed, driving the treatment cylinder to ascend, the next detection is convenient to carry out.

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

the fruit and vegetable processing barrel is characterized in that the fruit and vegetable processing barrel is arranged inside the processing barrel, the extracting solution is poured into the processing barrel manually, then the fruit and vegetable are extruded and positioned through the extrusion positioning mechanism, the fruit and vegetable are crushed through the crushing mechanism, the pesticide inside the fruit and vegetable can be mixed with the extracting solution, the extracting solution contains the whole pesticide in the fruit and vegetable, and the detection result is more accurate.

Secondly, in the process that the first extrusion plate moves downwards, the movable plate is driven to move downwards, inclined planes are arranged on the bottom surfaces of the movable plate and the first extrusion plate, an inclined plane is also arranged on the bottom surface of the pushing block, in the process that the movable plate and the first extrusion plate move downwards, when the movable plate or the first extrusion plate impacts the pushing block downwards, the pushing block slides towards the inner part of the sliding groove under the guiding action of the annular inclined plane, so that the pushing block cannot influence the falling of the movable plate and the first extrusion plate, in the process that the first extrusion plate moves to the position below the pushing block, when the first extrusion plate is compressed by the fourth spring and then continues to be extruded by the first extrusion plate, the fourth spring can push the movable plate to move to one side of the pushing block after extruding the pushing block, in the process that the first extrusion plate continues to move downwards but does not act on the pushing block, the movable plate is limited by the top end of the guiding pin, when the first pressing plate continues to move downwards to push the pushing block, the fourth spring is pressed to push the movable plate, under the action of the annular inclined plane at the bottom of the movable plate, the movable plate pushes the guide pin to the inside of the sliding groove and moves to the side surface of the guide pin, because the movable plate is always rotated in the treatment cylinder, when the guide groove on the movable plate rotates to the position matched with the guide pin, the guide pin is inserted into the guide groove under the action of the first spring, the movable plate reciprocates up and down in the treatment cylinder under the matching action of the convex groove, the concave groove and the guide pin and the rotation action of the movable plate, the fruit and vegetable residues in the treatment cylinder are extruded discontinuously, so that in the process of crushing the fruit and vegetable residues, the intermittent loosening and the compaction are beneficial to separating the pesticide in the loosened fruit and vegetable residues from the fruit and vegetable residues and improving the accuracy of the detection result.

Three, carry out the in-process that secondary extruded downwards at the second stripper plate, when the inside fruit vegetables residue of a processing section of thick bamboo is more, rigidity extrusion leads to the condition of filter screen damage to take place easily, this technical scheme can solve above problem, specific working method is as follows, through setting up second spring and third stripper plate, at the extruded in-process of secondary, carry out the elastic extrusion to the inside fruit vegetables of a processing section of thick bamboo, when the inside fruit vegetables residue of a processing section of thick bamboo is more, be favorable to providing sufficient space of stepping down, prevent at the extrusion in-process, cause the damage to the filter screen, and through setting up the damping ring, at the ascending in-process of locating lever, in time clear up the fruit vegetables residue on the locating lever outer wall and strike off, be favorable to maintaining the accuracy of next testing result.

Fourthly, through starting the second motor, drive third gear revolve, drive second gear revolve through the third gear, it rotates to drive the thread bush through the second gear, the thread bush rotates in the treatment section of thick bamboo outside, under the screw thread effect, the treatment section of thick bamboo removes to clean incasement portion, clean incasement portion packs has the cleaning solution, the treatment section of thick bamboo is at the removal in-process, remove in the clean ring outside, clear up the inner wall of treatment section of thick bamboo through clean ring, in time clear up the remaining pesticide or the fruit vegetables residue of treatment section of thick bamboo inner wall, be favorable to maintaining the accuracy of next testing result, the clearance is accomplished the back, drive second motor reversal, it rises to drive the treatment section of thick bamboo, be convenient for detect next time.

Drawings

FIG. 1 is a schematic view of the flow structure of the detection method of the present invention;

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

FIG. 3 is a schematic diagram of the structure at A in FIG. 2 according to the present invention;

FIG. 4 is a schematic structural view of a first overall cross-section of the present invention;

FIG. 5 is a schematic diagram of the structure at B in FIG. 4 according to the present invention;

FIG. 6 is a schematic view of the structure of FIG. 4 at C in accordance with the present invention;

FIG. 7 is a second overall cross-sectional rear view of the present invention;

FIG. 8 is a schematic diagram of the structure of FIG. 7 at D in accordance with the present invention;

FIG. 9 is a schematic diagram of the structure at E in FIG. 7 according to the present invention;

FIG. 10 is a schematic view of the overall bottom (with the cleaning tank removed) configuration of the present invention

Fig. 11 is a schematic view of the structure at F in fig. 10 according to the present invention.

In the figure: 1. a support table; 2. a partition plate; 3. a circular through groove; 4. a treatment cylinder; 5. a filter port; 6. a filter screen; 7. a base plate; 8. a support bar; 9. an electric push rod; 10. a first support plate; 11. a rotating plate; 12. a second support plate; 13. a first motor; 14. a first squeeze plate; 15. positioning a rod; 16. a movable plate; 17. a fourth spring; 18. a convex groove; 19. a groove; 20. a first mounting hole; 21. a guide groove; 23. crushing the blade; 24. a sliding groove; 25. a third motor; 27. a slider; 28. a first spring; 29. a pushing block; 30. a guide pin; 31. a third compression plate; 32. a second mounting hole; 33. a damping ring; 34. a second spring; 35. a collection canister; 36. a detector; 37. a guide block; 38. a feed inlet; 39. plugging the door; 40. connecting sheets; 41. a connecting strip; 42. a third spring; 43. a limiting sheet; 44. cleaning the box; 45. a threaded sleeve; 46. cleaning the ring; 47. a limiting rod; 48. connecting blocks; 49. a second gear; 50. a third gear; 51. a second motor.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

The method for detecting pesticide residues on fruits and vegetables based on food safety as shown in figures 1 to 11 is characterized by comprising the following steps: the detection method comprises the following steps:

the detection device comprises a support table 1, supporting legs are arranged at four corners of the bottom of the support table 1, a partition plate 2 is jointly fixed among the four supporting legs, a circular through groove 3 is formed in the top surface of the support table 1, a treatment barrel 4 is connected to the inside of the circular through groove 3 in a sliding mode, a crushing mechanism for crushing fruits and vegetables is arranged inside the treatment barrel 4, an extrusion positioning mechanism for positioning the fruits and vegetables is arranged above the treatment barrel 4, a filtering port 5 is formed in the lower portion of the side wall of the treatment barrel 4, a filtering net 6 is embedded and fixed in the filtering port 5, a collection detection mechanism is arranged on one side of the filtering net 6 and used for collecting and detecting mixed liquid of extraction liquid and pesticide, a cleaning mechanism is arranged below the treatment barrel 4 and used for driving the treatment barrel 4 to move up and down and cleaning the inner wall of the treatment barrel 4; when the fruit and vegetable crushing device works, most of the existing detection methods are that pesticides in fruits and vegetables are dissolved in an extraction liquid and then the pesticides in the extraction liquid are detected in a mode of cleaning or crushing the fruits and vegetables, but when existing detection equipment is used for crushing the fruits and vegetables, residues of the fruits and vegetables are in a loose state, part of residual pesticides in the residues are difficult to take out for detection, the accuracy of a detection result is easy to influence, and after the fruits and vegetables are crushed once, part of pesticides are easy to contaminate in treatment equipment in the detection equipment, the existing detection equipment is difficult to clean in time in the treatment equipment, and the influence on next detection is easy to cause, the technical scheme can solve the problems, and the specific working mode is that the fruits and vegetables are placed in a treatment cylinder 4, the extraction liquid is manually poured into the treatment cylinder 4, and then the fruits and vegetables are extruded and positioned through an extrusion positioning mechanism, carry out the breakage to the fruit vegetables through broken mechanism, make the inside pesticide of fruit vegetables can mix with the extract, thereby make holistic pesticide in the fruit vegetables that contains in the extract, make the testing result more accurate, collect the mixed liquid of extract and pesticide and detect through collecting detection mechanism, after detecting the completion, handle a section of thick bamboo 4 downstream through the drive of clearance mechanism and wash in step, in time clear up remaining pesticide or fruit vegetables residue to handling a section of thick bamboo 4 inner wall, be favorable to maintaining the accuracy of testing result next time, handle a section of thick bamboo 4 downstream to the top surface and 7 top surface parallel and level of bottom plate after, make the fruit vegetables residue on the bottom plate 7 expose, be convenient for manually clear up the fruit vegetables residue.

As a further embodiment of the invention, the crushing mechanism comprises a third motor 25, the third motor 25 is fixed on the bottom surface of the partition plate 2, an output shaft of the third motor 25 penetrates through the partition plate 2 and extends out to be fixed with a support rod 8, the top end of the support rod 8 penetrates into the treatment barrel 4 and is fixed with a bottom plate 7, the side wall of the bottom plate 7 is in sliding seal with the inner wall of the treatment barrel 4, and a crushing blade 23 is fixed on the top surface of the bottom plate 7; the during operation drives bracing piece 8 through third motor 25 and rotates, drives bottom plate 7 and crushing blade 23 synchronous rotation through bracing piece 8 to carry out the breakage to the inside fruit vegetables of a processing section of thick bamboo 4, make the inside pesticide of fruit vegetables can mix with the extract, thereby make contain holistic pesticide in the fruit vegetables in the extract, make the testing result more accurate.

As a further embodiment of the present invention, the extrusion positioning mechanism includes an electric push rod 9, the electric push rod 9 is fixed on the top surface of the partition board 2, a piston rod of the electric push rod 9 penetrates through the top surface of the support table 1 and is fixed with a first support plate 10 after extending out, a rotation plate 11 is rotatably connected on the top surface of the first support plate 10, the rotation plate 11 is located right above the treatment cylinder 4, a second support plate 12 is fixedly connected on the top surface of the first support plate 10 through a connecting rod, a first motor 13 is fixed on the bottom surface of the second support plate 12, the tail end of an output shaft of the first motor 13 is fixed at the center position of the top surface of the rotation plate 11, a first extrusion plate 14 is fixed below the rotation plate 11 through a connecting rod, and a plurality of positioning rods 15 are uniformly fixed on the bottom surface of the first extrusion plate 14; during operation, put into a processing section of thick bamboo 4 inside back with fruit vegetables, through starting electric putter 9, drive first backup pad 10 and second backup pad 12 and press the downstream, and drive first stripper plate 14 and locating lever 15 downstream in step, extrude the location to fruit vegetables, at the in-process synchronous start first motor 13 of downstream, drive the rotor plate 11 through first electronic and rotate, drive first stripper plate 14 through rotor plate 11 and rotate, drive locating lever 15 synchronous rotation through first stripper plate 14, the direction of rotation that makes locating lever 15 is opposite with the direction of rotation of broken blade 23, from being favorable to making the more complete of fruit vegetables breakage, be convenient for inside pesticide of fruit vegetables and extract mix.

As a further embodiment of the invention, the bottom surface of the first squeezing plate 14 is provided with an intermittent squeezing mechanism for intermittently squeezing fruit and vegetable residues, the intermittent squeezing mechanism comprises a movable plate 16 and a sliding groove 24, the movable plate 16 is arranged right below the first squeezing plate 14, a plurality of fourth springs 17 are jointly fixed between the movable plate 16 and the first squeezing plate 14, the top surface of the movable plate 16 is provided with a first mounting hole 20 matched with a positioning rod 15, the positioning rod 15 penetrates through the first mounting hole 20 and extends out, the side wall of the movable plate 16 is provided with four groups of guide grooves 21, the four groups of guide grooves 21 are mutually communicated and form a closed loop, each group of guide grooves 21 is formed by communicating a convex groove 18 and a concave groove 19, the edge of the bottom of the movable plate 16 is provided with an annular inclined surface, the sliding groove 24 is arranged inside the side wall of the treatment barrel 4, the sliding block 27 is connected inside the sliding groove 24 in a horizontal direction in a sliding manner, a plurality of first springs 28 are jointly fixed between the slide block 27 and the inner wall of the slide groove 24, a pushing block 29 is fixed at the top end of the slide block 27, a guide pin 30 is fixed at the bottom end of the slide block 27, the pushing block 29 and the guide pin 30 both penetrate through the side wall of the treatment barrel 4 in a sliding manner and extend into the treatment barrel 4, and inclined surfaces are respectively arranged on the top surface and the bottom surface of the pushing block 29; when the fruit and vegetable crusher works, when the existing detection equipment crushes fruits and vegetables, residues of the fruits and vegetables are in a loose state, and part of residual pesticides in the residues are difficult to take out for detection, so that the accuracy of a detection result is easily influenced, the technical scheme can solve the problems and can solve the problems in the following way, in the process that the first extrusion plate 14 moves downwards, the movable plate 16 is driven to move downwards, the inclined surfaces are respectively arranged on the bottom surfaces of the movable plate 16 and the first extrusion plate 14, the inclined surface is also arranged on the bottom surface of the pushing block 29, in the process that the movable plate 16 and the first extrusion plate 14 move downwards, when the movable plate 16 or the first extrusion plate 14 impacts the pushing block 29 downwards, the pushing block 29 slides towards the inside of the sliding groove 24 under the guiding action of the annular inclined surface, so that the pushing block 29 cannot influence the falling of the movable plate 16 and the first extrusion plate 14, when the first compression plate 14 moves to the lower side of the pushing block 29 and continues to be compressed by the first compression plate 14 after being compressed by the fourth spring 17, the fourth spring 17 pushes the movable plate 16 to push the pushing block 29 and then moves to one side of the pushing block 29, when the first compression plate 14 continues to move downwards but does not act on the pushing block 29, the movable plate 16 is firstly limited by the top end of the guide pin 30, when the first compression plate 14 continues to push the pushing block 29 downwards, the fourth spring 17 is pressed to push the movable plate 16, under the action of the annular inclined surface at the bottom of the movable plate 16, the movable plate 16 pushes the guide pin 30 to the inside of the sliding groove 24 and moves to the side of the guide pin 30, because the movable plate 16 is always rotating inside the treatment cylinder 4, when the guide groove 21 on the movable plate 16 rotates to a position matched with the guide pin 30, the guide pin 30 is under the action of the first spring 28, the movable plate 16 is inserted into the guide groove 21, and under the matching action of the convex groove 18, the groove 19 and the guide pin 30 and the rotating action of the movable plate 16, the movable plate 16 reciprocates up and down in the treatment cylinder to intermittently extrude fruit and vegetable residues in the treatment cylinder, so that the fruit and vegetable residues are intermittently loosened and compacted in the crushing process, pesticide in the loosened fruit and vegetable residues is favorably separated from the fruit and vegetable residues, and the accuracy of a detection result is favorably improved, and the movable plate 16 is elastically connected with the first extrusion plate 14 due to the fourth spring 17 arranged between the movable plate 16 and the first extrusion plate 14, so that a sufficient abdicating space is favorably provided in the up and down movement process of the movable plate 16, and after the crushing is completed, the first extrusion plate 14 is pulled upwards, when the first extrusion plate 14 rises to be in contact with the pushing block 29, because the inclined surface is arranged on the bottom surface of the pushing block 29, under the guiding action of the inclined surface, the pushing block 29 is moved toward the inside of the sliding groove 24, so that the guiding pin 30 is driven to be disengaged from the guiding groove 21, and the first pressing plate 14 and the movable plate 16 are integrally moved upward and disengaged from the treatment canister 4.

As a further embodiment of the present invention, a third pressing plate 31 is disposed below the movable plate 16, a plurality of second mounting holes 32 adapted to the positioning rod 15 are formed in the third pressing plate 31, a damping ring 33 is fixed inside the second mounting holes 32, the positioning rod 15 is inserted inside the damping ring 33, and a plurality of second springs 34 are jointly fixed between the third pressing plate 31 and the movable plate 16; the during operation, when the inside fruit vegetables residue of a processing section of thick bamboo 4 is more, rigidity extrusion leads to the condition of filter screen 6 damage to take place easily, this technical scheme can solve above problem, specific working method is as follows, through setting up second spring 34 and third stripper plate 31, at the extruded in-process of secondary, carry out the elastic extrusion to the inside fruit vegetables of a processing section of thick bamboo 4, when the inside fruit vegetables residue of a processing section of thick bamboo 4 is more, be favorable to providing sufficient space of stepping down, prevent at the extrusion in-process, cause the damage to filter screen 6, and through setting up damping ring 33, at the ascending in-process of locating lever 15, in time clear up the fruit vegetables residue on the outer wall of locating lever 15 and strike off, be favorable to maintaining the accuracy of next testing result.

As a further embodiment of the invention, the collecting and detecting mechanism comprises a collecting cylinder 35, a detector 36 and a guide block 37, wherein the collecting cylinder 35 is fixed on the top surface of the supporting table 1, the side wall of the collecting cylinder 35 is in sliding seal with the outer wall of the treatment cylinder 4, one side of the collecting cylinder 35 is provided with a feed inlet 38, the feed inlet 38 is communicated with the filtering port 5, the detector 36 is fixed on the top surface of the partition plate 2, the detector 36 is fixedly communicated with the inside of the collecting cylinder 35 through a guide pipe, the guide block 37 is fixed on the top surface of the supporting table 1, the guide block 37 is in sliding seal with the outer wall of the treatment cylinder 4, the top surface of the guide block 37 is provided with an inclined surface, and the height of one end, close to the treatment cylinder 4, of the inclined surface is higher than that of the other end; during operation, the mixed liquid of extraction liquid and pesticide flows to the inside back of collecting vessel 35 from filter screen 6, flows to inside the pipe along guide block 37's inclined plane to along pipe flow direction detector 36, with the contact of the detection head of detector 36, thereby detect the mixed liquid of extraction liquid and pesticide through detector 36, accomplish and detect the function.

As a further embodiment of the present invention, an opening and closing mechanism is arranged inside the feed port 38, and when the treatment barrel 4 descends, the opening and closing mechanism is used for plugging and sealing the feed port 38, when the treatment barrel 4 ascends, the opening and closing mechanism is used for opening the feed port 38, and the opening and closing mechanism includes a plugging door 39, connecting pieces 40 are fixed on both sides of the top end of the plugging door 39, connecting strips 41 are inserted on the connecting pieces 40, the connecting strips 41 are fixed on the top of the collection barrel 35, a third spring 42 is fixed between the connecting pieces 40 and the top surface of the collection barrel 35, a limiting piece 43 is fixed on the top surface of the plugging door 39, and the limiting piece 43 contacts with the top surface of the treatment barrel 4; the during operation, when handling section of thick bamboo 4 and descending, draw at the action of gravity of shutoff door 39 self and third spring 42 and act on down, make shutoff door 39 move down along connecting strip 41, and it is sealed to carry out the shutoff to feed inlet 38, through setting up third spring 42, make shutoff door 39 remain the trend of drawing of downstream all the time, be favorable to maintaining the sealing stability of shutoff door 39, at the in-process of taking out fruit vegetables residue, through sealing feed inlet 38, keep apart the inside extract and the fruit vegetables residue of feed inlet 38, prevent inside the fruit vegetables residue falls into collecting vessel 35, cause the influence to the testing result.

As a further embodiment of the invention, the cleaning mechanism comprises a cleaning box 44, a threaded sleeve 45, a cleaning ring 46, a limiting rod 47 and a connecting block 48, the connecting block 48 is fixed on the outer wall of the treatment cylinder 4, the limiting rod 47 is fixed on the top surface of the support table 1, one end of the connecting block 48 is slidably sleeved on the outer wall of the limiting rod 47, the cleaning box 44 is fixed on the top surface of the partition plate 2, the cleaning ring 46 is fixed on the support rod 8, the threaded sleeve 45 is in threaded connection with the outer wall of the treatment cylinder 4, the threaded sleeve 45 is rotatably connected on the bottom surface of the support table 1, a second gear 49 is sleeved and fixed on the outer wall of the threaded sleeve 45, a third gear 50 is meshed with one side of the second gear 49, a second motor 51 is coaxially fixed at the bottom of the third gear 50, and the second motor 51 is fixed on the side wall of the cleaning box 44; when the device works, after the treatment barrel 4 is used, partial pesticide and fruit and vegetable residues are easy to remain in the treatment barrel, if the pesticide and fruit and vegetable residues are not cleaned in time, the next detection is easy to affect, the technical scheme can solve the problems, in a specific working mode, the second motor 51 is started to drive the third gear 50 to rotate, the third gear 50 drives the second gear 49 to rotate, the second gear 49 drives the threaded sleeve 45 to rotate, the threaded sleeve 45 rotates outside the treatment barrel 4, the treatment barrel 4 moves towards the inside of the cleaning box under the action of threads, the cleaning box is filled with cleaning solution, the treatment barrel 4 moves outside the cleaning ring 46 in the moving process, the inner wall of the treatment barrel 4 is cleaned through the cleaning ring 46, the pesticide or fruit and vegetable residues remaining on the inner wall of the treatment barrel 4 are cleaned in time, the accuracy of the next detection result is favorably maintained, and after the cleaning is completed, the second motor 51 is driven to rotate reversely to drive the treatment barrel 4 to ascend, so that the next detection is facilitated.

The working principle of the invention is as follows:

put into a processing section of thick bamboo 4 inside with the fruit vegetables, the extract is poured into to processing section of thick bamboo 4 inside manually, then carry out extrusion positioning to the fruit vegetables through extrusion positioning mechanism, carry out the breakage to the fruit vegetables through crushing mechanism, make the inside pesticide of fruit vegetables can mix with the extract, thereby make the extract contain holistic pesticide in the fruit vegetables, make the testing result more accurate, collect the mixed liquid of extract and pesticide and detect through collecting detection mechanism, after the detection is accomplished, it washs in step to move down through a cleaning mechanism drive processing section of thick bamboo 4, in time clear up remaining pesticide or fruit vegetables residue to processing section of thick bamboo 4 inner wall, be favorable to maintaining the accuracy of next testing result, processing section of thick bamboo 4 moves down to the top surface and 7 top surface parallel and level of bottom plate after, make the fruit vegetables residue on the bottom plate 7 expose, be convenient for manual clear up the fruit vegetables residue.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.

Claims

1. A fruit and vegetable pesticide residue detection method based on food safety is characterized by comprising the following steps: the detection method comprises the following steps:

wherein, in the first step to the third step, the detection device comprises a support table (1), supporting legs are arranged at four corners of the bottom of the support table (1), a partition plate (2) is jointly fixed among the four supporting legs, a circular through groove (3) is formed in the top surface of the support table (1), a treatment barrel (4) is connected to the inside of the circular through groove (3) in a sliding manner, a crushing mechanism for crushing fruits and vegetables is arranged inside the treatment barrel (4), an extrusion positioning mechanism for positioning the fruits and vegetables is arranged above the treatment barrel (4), a filter opening (5) is formed below the side wall of the treatment barrel (4), a filter screen (6) is embedded and fixed in the filter opening (5), a collection detection mechanism is arranged on one side of the filter screen (6), and the collection detection mechanism is used for collecting and detecting the mixed liquid of the extract and the pesticide, a cleaning mechanism is arranged below the treatment barrel (4), and is used for driving the treatment barrel (4) to move up and down and cleaning the inner wall of the treatment barrel (4).

2. The method for detecting pesticide residues on fruits and vegetables based on food safety as claimed in claim 1, wherein the method comprises the following steps: broken mechanism includes third motor (25), third motor (25) are fixed on the bottom surface of baffle (2), the output shaft of third motor (25) runs through baffle (2) and extends away the after-fixing and have bracing piece (8), the top of bracing piece (8) is worn to the inside of handling a section of thick bamboo (4) and is fixed with bottom plate (7), the lateral wall of bottom plate (7) and the inner wall sliding seal who handles a section of thick bamboo (4), be fixed with broken blade (23) on the top surface of bottom plate (7).

3. The method for detecting pesticide residues on fruits and vegetables based on food safety as claimed in claim 1, wherein the method comprises the following steps: the extrusion positioning mechanism comprises an electric push rod (9), the electric push rod (9) is fixed on the top surface of the partition plate (2), a piston rod of the electric push rod (9) penetrates through the top surface of the support table (1) and is fixed with a first support plate (10) after extending out, the top surface of the first supporting plate (10) is rotatably connected with a rotating plate (11), the rotating plate (11) is positioned right above the treatment cylinder (4), the top surface of the first supporting plate (10) is fixedly connected with a second supporting plate (12) through a connecting rod, a first motor (13) is fixed on the bottom surface of the second supporting plate (12), the tail end of an output shaft of the first motor (13) is fixed at the center of the top surface of the rotating plate (11), a first extrusion plate (14) is fixed below the rotating plate (11) through a connecting rod, a plurality of positioning rods (15) are uniformly fixed on the bottom surface of the first extrusion plate (14).

4. The food safety-based fruit and vegetable pesticide residue detection method as claimed in claim 3, wherein the method comprises the following steps: the bottom surface of the first extrusion plate (14) is provided with an intermittent extrusion mechanism, the intermittent extrusion mechanism is used for intermittently extruding fruit and vegetable residues, the intermittent extrusion mechanism comprises a movable plate (16) and a sliding groove (24), the movable plate (16) is arranged under the first extrusion plate (14), a plurality of fourth springs (17) are jointly fixed between the movable plate (16) and the first extrusion plate (14), the top surface of the movable plate (16) is provided with a first mounting hole (20) matched with a positioning rod (15), the positioning rod (15) penetrates through the first mounting hole (20) and extends out, the side wall of the movable plate (16) is provided with four groups of guide grooves (21), the four groups of guide grooves (21) are mutually communicated and form a closed loop, and each group of guide grooves (21) is formed by communicating a convex groove (18) and a groove (19), and the border department of fly leaf (16) bottom has seted up annular inclined plane, the inside at a processing section of thick bamboo (4) lateral wall is seted up in sliding tray (24), the inside horizontal direction sliding connection of sliding tray (24) has slider (27), be fixed with a plurality of first springs (28) jointly between slider (27) and sliding tray (24) inner wall, the top of slider (27) is fixed with and promotes piece (29), the bottom mounting of slider (27) has guide pin (30), it all slides and runs through the lateral wall of a processing section of thick bamboo (4) and extends to inside a processing section of thick bamboo (4) to promote piece (29) and guide pin (30), the inclined plane has all been seted up on the top surface and the bottom surface of promotion piece (29).

5. The food safety-based fruit and vegetable pesticide residue detection method as claimed in claim 4, wherein the method comprises the following steps: set up third stripper plate (31) below fly leaf (16), set up a plurality of second mounting hole (32) with locating lever (15) looks adaptation on third stripper plate (31), second mounting hole (32) inside is fixed with damping ring (33), locating lever (15) are inserted and are established inside damping ring (33), be fixed with a plurality of second springs (34) jointly between third stripper plate (31) and fly leaf (16).

6. The method for detecting pesticide residues on fruits and vegetables based on food safety as claimed in claim 1, wherein the method comprises the following steps: collect detection mechanism and include surge drum (35), detector (36), guide block (37), surge drum (35) are fixed on the top surface of supporting table (1), the lateral wall and the outer wall sliding seal of a processing section of thick bamboo (4) of surge drum (35), feed inlet (38) have been seted up to one side of surge drum (35), feed inlet (38) are linked together with filtration mouth (5), detector (36) are fixed on the top surface of baffle (2), detector (36) and surge drum (35) are inside to pass through the fixed intercommunication of pipe, guide block (37) are fixed on the top surface of supporting table (1), guide block (37) and the outer wall sliding seal of a processing section of thick bamboo (4), the inclined plane has been seted up on guide block (37) top surface, the inclined plane is close to the height that highly is higher than the other end of a processing section of thick bamboo (4) one end.

7. The method for detecting pesticide residues on fruits and vegetables based on food safety as claimed in claim 6, wherein the method comprises the following steps: the utility model discloses a feed inlet (38) is characterized in that feed inlet (38) is inside to be provided with the mechanism that opens and shuts, and when handling a section of thick bamboo (4) and descend, the mechanism that opens and shuts is used for carrying out the shutoff to feed inlet (38), when handling a section of thick bamboo (4) and rise, the mechanism that opens and shuts is used for opening feed inlet (38), the mechanism that opens and shuts includes shutoff door (39), the top both sides of shutoff door (39) all are fixed with connection piece (40), it is equipped with connecting strip (41) to insert on connection piece (40), the top at surge drum (35) is fixed in connecting strip (41), be fixed with third spring (42) jointly between the top surface of connection piece (40) and surge drum (35), be fixed with spacing piece (43) on shutoff door (39) top surface, spacing piece (43) contact with handling a section of thick bamboo (4) top surface.

8. The method for detecting pesticide residues on fruits and vegetables based on food safety as claimed in claim 1, wherein the method comprises the following steps: the cleaning mechanism comprises a cleaning box (44), a threaded sleeve (45), a cleaning ring (46), a limiting rod (47) and a connecting block (48), the connecting block (48) is fixed on the outer wall of the treatment cylinder (4), the limiting rod (47) is fixed on the top surface of the support table (1), one end of the connecting block (48) is slidably sleeved on the outer wall of the limiting rod (47), the cleaning box (44) is fixed on the top surface of the partition plate (2), the cleaning ring (46) is fixed on the support rod (8), the threaded sleeve (45) is in threaded connection with the outer wall of the treatment cylinder (4), the threaded sleeve (45) is rotatably connected with the bottom surface of the support table (1), a second gear (49) is sleeved on the outer wall of the threaded sleeve (45), a third gear (50) is meshed on one side of the second gear (49), a second motor (51) is coaxially fixed at the bottom of the third gear (50), the second motor (51) is fixed on the side wall of the cleaning box (44).