CN113418761A - Be applied to preprocessing device that pesticide remained in agricultural product and detect - Google Patents
Be applied to preprocessing device that pesticide remained in agricultural product and detect Download PDFInfo
- Publication number
- CN113418761A CN113418761A CN202110619516.4A CN202110619516A CN113418761A CN 113418761 A CN113418761 A CN 113418761A CN 202110619516 A CN202110619516 A CN 202110619516A CN 113418761 A CN113418761 A CN 113418761A
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- 239000000575 pesticide Substances 0.000 title claims description 3
- 238000007781 pre-processing Methods 0.000 title claims description 3
- 238000005070 sampling Methods 0.000 claims abstract description 78
- 238000003860 storage Methods 0.000 claims abstract description 65
- 230000007246 mechanism Effects 0.000 claims abstract description 52
- 230000009471 action Effects 0.000 claims abstract description 25
- 238000012545 processing Methods 0.000 claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 239000000447 pesticide residue Substances 0.000 claims abstract description 15
- 238000001125 extrusion Methods 0.000 claims abstract description 12
- 238000012216 screening Methods 0.000 claims description 38
- 230000000903 blocking effect Effects 0.000 claims description 30
- 238000003825 pressing Methods 0.000 claims description 30
- 238000007493 shaping process Methods 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 21
- 230000000694 effects Effects 0.000 claims description 15
- 239000002775 capsule Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 12
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 10
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 10
- 241001330002 Bambuseae Species 0.000 claims description 10
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 10
- 239000011425 bamboo Substances 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000000630 rising effect Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims 2
- 238000007873 sieving Methods 0.000 claims 1
- 239000011149 active material Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 241000209504 Poaceae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
Abstract
The invention discloses a pretreatment device applied to pesticide residue detection in agricultural products, which comprises a fixed storage barrel for storing a plurality of externally thrown agricultural products, a continuous sampling mechanism for sampling single agricultural products in multiple directions is connected in the fixed storage cylinder, the bottom of the fixed storage cylinder is provided with an auxiliary processing mechanism connected with the continuous sampling mechanism, the invention can realize the purposes of active material gathering and multi-stage crushing through the auxiliary processing mechanism, when the device is implemented, the continuous sampling mechanism carries out multi-directional sampling on a single agricultural product, then the auxiliary processing mechanism can extrude the sample obtained by multi-directional sampling to carry out primary crushing action, and after the primary crushing action is finished, the crushed samples can be gathered together by the auxiliary processing mechanism and the gathered samples are subjected to increased extrusion force so as to perform multi-stage crushing action.
Description
Technical Field
The invention relates to the technical field of agricultural product pretreatment, in particular to a pretreatment device applied to detection of pesticide residues in agricultural products.
Background
Agricultural products are various plants cultivated in agriculture, and comprise two main types of grain crops and economic crops (oil crops, vegetable crops, flowers, grasses and trees). The food-by-food relation of people is expressed, the reasonable food collocation can bring health to people, more and more people begin to cultivate agricultural products, and meanwhile, the modern society also more and more attaches importance to the detection of green agricultural products.
The prior pretreatment device is named as an agricultural product harmful element residue detection pretreatment system and a pretreatment process as a patent with the patent application number of CN202010767258.X, the pretreatment process of pulping after crushing is carried out on agricultural products by designing a mechanical agricultural product harmful element residue detection pretreatment device with higher automation degree, so that the condition that the detection result has errors due to uneven distribution of harmful element residues is avoided, and the accuracy of the detection result is improved; the device can also work and clean the agricultural product harmful element residue detection pretreatment equipment.
However, the above operations have limitations when dealing with the broken block-shaped agricultural product samples, for example, the juice of a part of agricultural products is less, and the broken block-shaped agricultural product samples are easily pushed to the edge of the breaking device by the breaking device after being primarily broken, so that a large number of block-shaped agricultural product samples cannot be sufficiently broken into pulp, and the detection data of the subsequently made pulp is influenced.
Therefore, the pretreatment device for detecting pesticide residues in agricultural products in the prior art cannot solve the problem that the detection result is affected by the insufficiently crushed lumpy agricultural product samples.
Disclosure of Invention
The invention aims to provide a pretreatment device applied to pesticide residue detection in agricultural products, and aims to solve the technical problem that in the prior art, a detection result is influenced by an insufficiently crushed lumpy agricultural product sample.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
a pretreatment device applied to pesticide residue detection in agricultural products comprises a fixed storage barrel for storing a plurality of externally input agricultural products, a continuous sampling mechanism for sampling a single agricultural product in multiple directions is connected in the fixed storage barrel, and an auxiliary treatment mechanism connected with the continuous sampling mechanism is installed at the bottom of the fixed storage barrel;
the auxiliary processing mechanism is used for extruding samples obtained through multi-directional sampling so as to perform primary crushing action, and is used for gathering the crushed samples together after finishing the primary crushing action and applying increased extrusion force to the gathered samples so as to perform multi-stage crushing action of gathering the samples.
As a preferred scheme of the present invention, the continuous sampling mechanism comprises a continuous screening mechanism connected to an inner wall of the fixed storage cylinder, one side of the continuous screening mechanism near the bottom of the fixed storage cylinder is connected to a mantle sampler for multi-directionally sampling the sampled agricultural products, and one side of the mantle sampler near the bottom of the fixed storage cylinder is directly connected to the auxiliary processing mechanism;
the auxiliary processing mechanism comprises a sample gathering and unfolding device which is connected with the inner wall of the cover barrel sampler and used for storing a crushed sample, a force application level crusher is sleeved in the sample gathering and unfolding device, a shaping moving device is connected to the bottom of the sample gathering and unfolding device, and a fixed-point driver is connected to one end, far away from the sample gathering and unfolding device, of the force application level crusher;
it is right through a cover section of thick bamboo sampler sample agricultural product carries out diversified sample, and rethread fixed point driver guide application of force level breaker is rotatory with cover section of thick bamboo sampler in diversified extrusion breakage that takes out in with the appearance thick liquid that obtains preliminary crushed aggregates, court let in gas in gathering the appearance expander and will gather the inboard volume of appearance expander and reduce, make simultaneously moulding movable ware is along with gather appearance expander activity and assemble the appearance thick liquid of preliminary crushed aggregates, court again let in the application of force level breaker gaseous will the application of force level breaker is applied the extrusion force of the appearance thick liquid of giving preliminary crushed aggregates and is progressively increased in order to further break the appearance thick liquid.
As a preferred scheme of the invention, the sample gathering expander comprises a flow guide block connected in the cover cylinder sampler and a sample gathering sac cover arranged at the bottom of the cover cylinder sampler, wherein a mounting groove is arranged in the flow guide block, a fixing column for fixing the end part of the sample gathering sac cover is mounted in the mounting groove, a jacking piece which is connected with the sample gathering sac cover and used for pushing the sample gathering sac cover to bend and lift is arranged in the mounting groove, a plurality of pushing blocks with V-shaped longitudinal sections are connected to the inner wall of the sample gathering sac cover, a sliding limiting block for limiting the pushing blocks is mounted on the inner wall of the sample gathering sac cover, and a connecting strip is mounted on the inner wall of the bottom of the sample gathering sac cover;
the application of force level breaker includes through connection and is in gather appearance bag cover bottom's inflation post, the one end that gathers appearance bag cover was kept away from to the inflation post with moulding activity ware is connected the lateral wall of inflation post is connected with the activity and transfers the briquetting the return piece of being connected with inflation post inner wall is installed to the inside wall of activity transfer briquetting.
As a preferable scheme of the invention, the shaping activity device comprises a shaping inflation cover connected with the bottom of the cover barrel sampler, one end of the shaping inflation cover close to the expansion column is connected with an inflation lifting frame for pushing the bottom of the specimen gathering bag cover to lift, and an expansion ring for increasing the sealing performance between the expansion column and the bottom of the specimen gathering bag cover is installed on the inflation lifting frame.
As a preferable scheme of the present invention, the fixed point driver comprises a blocking block connected to an inner side wall of the bottom of the fixed storage cylinder, a through groove is formed on the blocking block, a driving wheel is connected to the inner wall of the bottom of the fixed storage cylinder, one end of the expansion column close to the shaping inflation cover passes through the shaping inflation cover and is connected with an inflation piston column for simultaneously inflating the expansion column, the shaping inflation cover and the sample bag cover;
the inflatable piston column comprises an inflatable column connected with a driving wheel, a movable plugging column connected with an expansion column is sleeved in the inflatable column, a sealing spring connected with the movable plugging column is installed in the inflatable column, and an air guide plugging column installed at the bottom of the inflatable column and penetrating through the end part of the sealing spring is sleeved in the sealing spring.
As a preferable scheme of the invention, the continuous screening mechanism comprises a screening disc connected with the top end of the fixed storage cylinder and used for screening a plurality of agricultural products thrown into the fixed storage cylinder, a spindle driven by a driver penetrates through the axis position of the screening disc, one end of the spindle close to the screening disc is connected with a rotary wheel changing disc, the rotary wheel changing disc is arranged on one side of the screening disc close to the bottom of the fixed storage cylinder, one side of the rotary wheel changing disc far away from the screening disc is connected with a storage device used for storing the agricultural products and pushed by the rotary wheel changing disc to change the current sampled agricultural products, and one side of the storage device far away from the rotary wheel changing disc is connected with the cover cylinder sampler;
screening a plurality of agricultural products that drop into in the fixed storage cylinder through the screening dish to make a plurality of agricultural products independently deposit in the storage ware according to volume size, it is rotatory that rethread driver drives the dabber, it rotates to make rotatory dabber drive rotate the change dish, and through the activity from top to bottom of pivoted rotation change dish guide cover section of thick bamboo sampler in order to carry out diversified sample to single agricultural product, it uses the dabber to carry out the rotation of axis in order to change present sample agricultural product and carry out diversified sample action to next agricultural product to drive again through pivoted rotation change dish drive cover section of thick bamboo sampler again, the secondary motion processing mechanism of redriving carries out the preliminary treatment in order to obtain the agricultural product detection article to the sample of taking out.
As a preferred scheme of the invention, the screening disc comprises a blocking cover connected with the top end of the fixed storage cylinder, the blocking cover is provided with a feeding square hole, one side of the blocking cover close to the fixed storage cylinder is provided with a fixed disc connected with the inner wall of the fixed storage cylinder, the edge of the surface of the fixed disc is annularly provided with a plurality of leakage holes, the surface of the fixed disc is provided with a guide feeding table which is sleeved outside the mandrel and used for feeding agricultural products towards the leakage holes, and the surface of one side of the blocking cover close to the fixed disc is provided with a pushing block which is connected with the mandrel and used for pushing the agricultural products into the leakage holes under the driving of the mandrel;
an auxiliary ring block is arranged in the leakage hole and comprises a plurality of pushing blocks with V-shaped longitudinal sections, an ejector piece connected with the inner wall of the leakage hole is arranged on the inner wall of a V-shaped opening of each pushing block, and a guide groove for limiting the pushing blocks is formed in the inner wall of the leakage hole;
the side wall of the pushing block is connected with a deflection block, the side wall of the deflection block is provided with a plurality of pushing rubber rings, and the side wall of one end, far away from the pushing block, of the deflection block is provided with a jacking piece connected with the pushing block.
As a preferred scheme of the invention, the rotary wheel changing disc comprises a driving ring connected with one end of the mandrel far away from the blocking cover, the surface of one end of the driving ring close to the blocking cover is connected with a plurality of pressing strips, one end of the driving ring close to the blocking cover is provided with a clamping ring connected with a fixed disc, one end of the clamping ring close to the driving ring is provided with a plurality of wheel changing grooves which are in right trapezoid structures and used for pushing the pressing strips to move towards one side far away from the clamping ring, the inner side wall of the fixed storage cylinder is provided with an embedding ring groove used for clamping the driving ring, and a reset spring, the end face of which is connected with the driving ring and used for pushing the driving ring to reset, is arranged in the embedding ring groove;
the movable ring is driven by the mandrel, the pressing strip slides along the inner wall of the current alternate groove, so that the pressing strip is pushed to drive the movable ring to move towards one side away from the clamping ring, the movable driving ring is used for pressing the reset spring, and after the pressing strip moves to be separated from the current alternate groove, the reset spring pushes the driving ring to rise, so that the rising driving ring is clamped into the next alternate groove along with the pressing strip;
a limiting sleeve is arranged on the side wall of one end, away from the sealing cover, of the mandrel, and a lifting ring sleeve connected with the driving ring is sleeved on the side wall of the limiting sleeve;
the inner side wall of the driving ring is provided with a plurality of clamping sliding sleeves, the side wall of each clamping sliding sleeve is provided with a pushing pressing piece, and one end, far away from each clamping sliding sleeve, of each pushing pressing piece is provided with a pushing clamping cylinder connected with the cover cylinder sampler.
As a preferable scheme of the invention, the storage device comprises a plurality of support sleeve columns connected with the side wall of the mandrel, one end of each support sleeve column, which is far away from the mandrel, is connected with a guide sleeve, one side of each guide sleeve, which is close to the mantle tube sampler, is provided with a bearing sheet for supporting agricultural products, a plurality of guide columns connected with the guide sleeves are arranged between the bearing sheets and the guide sleeves, a pulling piece is installed in each guide column, and one end of each pulling piece, which is far away from each guide column, is provided with a dividing bar connected with the bearing sheet.
As a preferable scheme of the invention, the cover barrel sampler comprises a sampling barrel sleeved in the embedded sliding sleeve and used for storing agricultural products supported by the bearing piece, the inner side wall of the sampling barrel is connected with the flow guide block, the outer side wall of the bottom of the sampling barrel is connected with the pushing clamping barrel, the inner side wall of the sampling barrel is provided with an air inflation ring sleeve, the side wall of the air inflation ring sleeve is provided with a plurality of sampling blades used for sampling, the sampling blades are positioned between adjacent guide columns, and one end of the air inflation ring sleeve, which is close to the guide columns, is provided with a pushing bag table.
Compared with the prior art, the invention has the following beneficial effects:
the auxiliary processing mechanism can be used for realizing the purposes of actively gathering and multi-stage crushing of materials, when the continuous sampling mechanism is implemented in detail, the continuous sampling mechanism can sample a single agricultural product in multiple directions, then the auxiliary processing mechanism can extrude the samples obtained through the multiple-direction sampling so as to perform a primary crushing action, and after the primary crushing action is completed, the broken samples can be gathered together through the auxiliary processing mechanism and increased extrusion force is applied to the gathered samples so as to perform a gathering multi-stage crushing action.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of an inflated configuration of an expansion column in accordance with an embodiment of the present invention;
FIG. 3 is a schematic diagram of an embodiment of the invention showing the structure of the column before inflation;
FIG. 4 is a diagram illustrating a fixed point driver according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a screening tray configuration according to an embodiment of the present invention;
FIG. 6 is a schematic view of a detent ring structure according to an embodiment of the present invention;
FIG. 7 is a bottom view of the retaining ring of the present invention;
FIG. 8 is a bottom view of a block-out cover in accordance with an embodiment of the present invention.
The reference numerals in the drawings denote the following, respectively:
1-fixing the storage cylinder; 2-a continuous sampling mechanism; 3-auxiliary processing mechanism;
21-screening plate; 22-a mandrel; 23-rotating the reel; 24-a storage; 25-mantle sampler; 26-a continuous screening mechanism;
211-a closure cap; 212-a square casting and arranging hole; 213-fixed disk; 214-escape aperture; 215-guiding the feeding table; 216-pusher block; 217-deflection block; 218-push the rubber ring; 219-a top pressing piece;
2141-an auxiliary ring block; 2142-a pushing block; 2143-a pusher; 2144-a guide groove;
221-a limit sleeve; 222-a lifting loop; 223-clamping the sliding sleeve; 224-pushing the compression element; 225-pushing the cartridge;
231-a driving ring; 232-pressing the strip; 233-capture ring; 234-rotation slots; 235-clamping ring groove; 236-a reset spring;
241-item sleeved columns; 242-guide sleeve; 243-carrier sheet; 244-guide column; 245-a pull member; 246-quantile bar;
251-a sampling tube; 252-a gas-filled cuff; 253-a sampling blade; 254-push the capsule table;
31-a poly sample spreader; 32-force application stage crushers; 33-shaping the mobilizer; 34-a fixed point driver;
311-a flow guide block; 312-a poly-like pouch cover; 313-a mounting groove; 314-fixed columns; 315-jack-up member; 316-a push block; 317-a sliding limiting block; 318-connecting strip;
321-an expansion column; 322-a movable pressure regulating block; 323-a return member;
331-shaping the charging cover; 332-inflatable lifting frame; 333-expansion ring;
341-barrier blocks; 342-through slot; 343-driving wheels; 344 — a charge piston column; 345-gas-filled column; 346-movable plugging column; 347-seal spring; 348-gas guide sealing column.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present invention provides a pretreatment device for detecting pesticide residues in agricultural products, comprising a fixed storage cylinder 1 for storing a plurality of externally inputted agricultural products, a continuous sampling mechanism 2 connected in the fixed storage cylinder 1 for sampling a single agricultural product in multiple directions, and an auxiliary treatment mechanism 3 connected with the continuous sampling mechanism 2 and installed at the bottom of the fixed storage cylinder 1;
the auxiliary processing mechanism 3 is used for extruding samples obtained by multi-azimuth sampling so as to perform primary crushing action, and is used for gathering the crushed samples together after finishing the primary crushing action and applying increased extrusion force to the gathered samples so as to perform multi-stage crushing action of gathering the samples.
The device accessible is assisted and is handled mechanism 3, realized gathering and multistage broken purpose to the material initiative, during its concrete implementation, continuous type sampling mechanism 2 carries out diversified sample to single agricultural product, later assist handling mechanism 3 can extrude the sample that diversified sample obtained in order to carry out preliminary crushed aggregates action, and accomplish behind the preliminary crushed aggregates action again accessible assist handling mechanism 3 with the sample after the breakage assemble again together and exert the extrusion force that increases in order to gather a multistage broken action to the sample that assembles.
As shown in fig. 1, 2 and 3, the continuous sampling mechanism 2 comprises a continuous screening mechanism 26 connected with the inner wall of the fixed storage cylinder 1, one side of the continuous screening mechanism 26 close to the bottom of the fixed storage cylinder 1 is connected with a cover cylinder sampler 25 for sampling agricultural products in multiple directions, and one side of the cover cylinder sampler 25 close to the bottom of the fixed storage cylinder 1 is directly connected with the auxiliary processing mechanism 3;
the auxiliary processing mechanism 3 comprises a sample gathering and unfolding device 31 which is connected with the inner wall of the cover cylinder sampler 25 and used for storing the crushed sample, a force application level crusher 32 is sleeved on the inner side of the sample gathering and unfolding device 31, a shaping moving device 33 is connected to the bottom of the sample gathering and unfolding device 31, and a fixed point driver 34 is connected to one end, far away from the sample gathering and unfolding device 31, of the force application level crusher 32;
the device is when concrete implementation initiative is assembled and multistage broken action, accessible cover section of thick bamboo sampler 25 carries out diversified sample to sample agricultural product, rethread fixed point driver 34 guides the rotation of the rotatory extrusion breakage that takes out in cover section of thick bamboo sampler 25 of application of force level breaker 32 in order to obtain the appearance thick liquid of preliminary crushed aggregates, let in gas in gathering appearance expander 31 and will gather the inboard volume of appearance expander 31 and reduce towards gathering, make moulding movable device 33 assemble the appearance thick liquid of preliminary crushed aggregates along with gathering the activity of appearance expander 31 simultaneously, let in gas in the breaker 32 of application of force again and apply force level breaker 32 and apply the extrusion force of the appearance thick liquid of giving preliminary crushed aggregates and progressively increase in order to further crushing appearance thick liquid.
As shown in fig. 2 and 3, the specimen collecting unfolding device 31 includes a flow guide block 311 connected in the hood sampler 25 and a specimen collecting bag cover 312 arranged at the bottom of the hood sampler 25, a mounting groove 313 is arranged in the flow guide block 311, a fixing column 314 for fixing the end of the specimen collecting bag cover 312 is mounted in the mounting groove 313, a jacking member 315 connected with the specimen collecting bag cover 312 and used for pushing the specimen collecting bag cover 312 to bend and lift is arranged in the mounting groove 313, a plurality of pushing blocks 316 with V-shaped longitudinal sections are connected to the inner wall of the specimen collecting bag cover 312, a sliding limiting block 317 for limiting the pushing blocks 316 is mounted on the inner wall of the specimen collecting bag cover 312, and a connecting strip 318 is mounted on the inner wall of the bottom of the specimen collecting bag cover 312 (the connecting strip 318 is used for preventing the specimen from splashing and running out due to the overall movement of the specimen collecting bag cover 312);
the force application level crusher 32 comprises an expansion column 321 which is connected to the bottom of the specimen gathering bag cover 312 in a penetrating manner, one end, far away from the specimen gathering bag cover 312, of the expansion column 321 is connected with the shaping moving device 33, the side wall of the expansion column 321 is connected with a movable pressure regulating block 322, and a return piece 323 connected with the inner wall of the expansion column 321 is installed on the inner side wall of the movable pressure regulating block 322.
In this embodiment, the expansion column 321 includes an upper portion and a lower portion, wherein the upper portion is used for squeezing and crushing the sample, the lower portion is used for being driven by the fixed-point driver 34 to provide power for crushing, and the sample-gathering capsule 312 is composed of two layers of rubber sealing covers, wherein the outer layer is fixed on the inner wall of the cover-tube sampler 25 and is immovable, and only the inner layer is movable.
In order to realize active convergence and multi-stage crushing, the implementation of the method needs to be divided into two steps, wherein in the first step, when the sample is taken down, the fixed-point driver 34 can drive the expansion column 321 to rotate, and then the rotating expansion column 321 can perform primary crushing on the sample through the movable pressure-regulating block 322 (the specific structure is shown in fig. 2 and 3, and the state is shown in fig. 3 at this time) so as to obtain primary crushed sample slurry.
In the second step, the inflation of the inflation column 321 is performed to make the inflation column 321 in the state shown in fig. 2 and to stretch the return member 323, so as to facilitate the restoration after the subsequent deflation, and the inflation of the inflation column 321 and the specimen bag cover 312 is performed simultaneously.
When getting into gaseous in gathering appearance bag cover 312, can expand big self volume gradually, gather appearance bag cover 312 that expands this moment and can stimulate jack-up piece 315 and descend, reset after convenient follow-up gassing, gather appearance bag cover 312 that expands simultaneously can also drive and promote piece 316 along the activity of slip stopper 317, make gather appearance bag cover 312 inside present the state that is shown for fig. 2, and at the in-process of gathering appearance bag cover 312 internal motion, can drive the sample towards the activity of inflation post 321, make sample and inflation post 321 contact more abundant, can fully extrude broken action to the sample when inflation post 321 is rotatory.
As shown in fig. 2 and 3, the shaping mover 33 includes a shaping inflation cover 331 connected to the bottom of the cover sampler 25, an inflation rising frame 332 connected to an end of the shaping inflation cover 331 near the expansion column 321 for pushing the bottom of the specimen capsule cover 312 to rise, and an expansion ring 333 mounted on the inflation rising frame 332 for increasing the sealing between the expansion column 321 and the bottom of the specimen capsule cover 312.
In this embodiment, the shaping inflation cover 331, the inflation ring 333, the inflation column 321, and the specimen capsule cover 312 are inflated at the same time, i.e. the connection between the four parts can be communicated through the air vent.
When the expansion column 321 is inflated, the shaping inflation cover 331, the inflation lifting frame 332 and the inflation ring 333 are inflated simultaneously, and then the inflation lifting frame 332 can push the uncrushable sample at the bottom of the expansion column 321 toward the expansion column 321, and the inflation ring 333 can increase the sealing performance between the expansion column 321 and the bottom of the specimen capsule cover 312.
As shown in fig. 1 and 4, the fixed point driver 34 includes a blocking block 341 connected to the inner side wall of the bottom of the fixed storage cylinder 1, a through slot 342 is formed on the blocking block 341, a driving wheel 343 is connected to the inner wall of the bottom of the fixed storage cylinder 1, one end of the expansion column 321 close to the shaping inflation cover 331 passes through the shaping inflation cover 331 and is connected with an inflation piston column 344 for simultaneously inflating the expansion column 321, the shaping inflation cover 331 and the specimen capsule cover 312;
the inflation piston column 344 includes an inflation column 345 connected with a driving wheel 343, a movable blocking column 346 connected with the expansion column 321 is sleeved in the inflation column 345, a sealing spring 347 connected with the movable blocking column 346 is installed in the inflation column 345, and an air guide blocking column 348 installed at the bottom of the inflation column 345 and having an end penetrating into the movable blocking column 346 is sleeved in the sealing spring 347.
This air guide seals post 348 and is used for driving gas to enter into inflation post 321, the moulding cover 331 and gathers appearance bag cover 312 of filling, the operation of aerifing of this department is mainly realized by air guide seals post 348, during its concrete implementation, directly set up an inflation hole (with air guide seal post 348 intercommunication) in the bottom of inflating piston post 35 and set up the ring of inflating in fixed storage cylinder 1 bottom simultaneously, this ring of inflating is annular inflatable packer, be equipped with nipple type on the inflatable packer simultaneously and fill the head, when inflating piston post 35 and being driven to fill head department, it can imbed the inflation hole and realize aerifing to fill the head, can set up the rubber spacer in this inflation hole and can only admit air and can not give vent to the air.
As shown in fig. 1, 2 and 5, the continuous screening mechanism 26 includes a screening disk 21 connected to the top end of the fixed storage cylinder 1 and used for screening a plurality of agricultural products thrown into the fixed storage cylinder 1, a spindle 22 driven by a driver is connected to the axial center position of the screening disk 21 in a penetrating manner, one end of the spindle 22 close to the screening disk 21 is connected with a rotary wheel changing disk 23, the rotary wheel changing disk 23 is arranged on one side of the screening disk 21 close to the bottom of the fixed storage cylinder 1, one side of the rotary wheel changing disk 23 far away from the screening disk 21 is connected with a storage device 24 used for storing the agricultural products and pushed by the rotary wheel changing disk 23 to replace the currently sampled agricultural products, and one side of the storage device 24 far away from the rotary wheel changing disk 23 is connected with a mantle sampler 25;
in order to realize the action of continuous multidirectional independent sampling of a plurality of agricultural products, a plurality of agricultural products put into the fixed storage barrel 1 are screened by the screening disc 21, so that the agricultural products are independently stored in the storage device 24 according to the size, the spindle 22 is driven to rotate by the driver, the rotating spindle 22 drives the rotating wheel-changing disc 23 to rotate, the rotating wheel-changing disc 23 guides the cover barrel sampler 25 to move up and down to sample the single agricultural product in a multidirectional manner, meanwhile, the rotating wheel-changing disc 23 drives the cover barrel sampler 25 to rotate by taking the spindle 22 as the axis so as to replace the current sampling agricultural product and carry out the multidirectional sampling action on the next agricultural product, and the auxiliary processing mechanism 3 is driven to preprocess the taken sample so as to obtain an agricultural product detection product.
As shown in fig. 1, 2, 5 and 7, the sifting tray 21 includes a cover 211 connected to the top end of the stationary cartridge 1, a row-throwing square hole 212 is arranged on the blocking cover 211, a fixed disc 213 connected with the inner wall of the fixed storage cylinder 1 is arranged on one side of the blocking cover 211 close to the fixed storage cylinder 1 (the connection mode can be threaded connection, which is convenient for taking out waste materials subsequently), a plurality of outlet holes 214 are annularly formed on the surface edge of the fixed disk 213, the inner diameters of the outlet holes 214 are arranged in a clockwise increasing trend (i.e. the rotation direction of the spindle 22 is also clockwise), a guide feeding table 215 which is sleeved outside the mandrel 22 and is used for feeding the agricultural products towards the leakage hole 214 is arranged on the surface of the fixed disc 213, a pushing block 216 connected to the spindle 22 and driven by the spindle 22 to push the agricultural products into the leaking hole 214 is disposed on a side surface of the blocking cover 211 close to the fixing plate 213.
In order to realize the purpose of screening a plurality of agricultural products according to volume, in the specific implementation, a plurality of agricultural products are directly thrown into the throwing and discharging square holes 212 (for convenience of throwing, a rolling chute corresponding to the leakage hole 214 can be arranged on the side wall of the guide feeding table 215), at the moment, the agricultural products directly slide to the edge of the fixed disc 213 along the guide feeding table 215, then the spindle 22 is driven to rotate by an external driver, the spindle 22 drives the pushing block 216 to move after rotating, then the movable pushing block 216 pushes the agricultural products to roll along the edge of the fixed disc 213, once the agricultural products roll into one leakage hole 214, at the moment, the agricultural products with larger volume are directly pushed by the pushing block 216 to move towards the next leakage hole 214, and the agricultural products with smaller volume are directly pushed into the leakage hole 214 by the pushing block 216.
An auxiliary ring block 2141 is installed in the leakage hole 214, the auxiliary ring block 2141 comprises a plurality of pushing blocks 2142 with a V-shaped longitudinal section, a pushing piece 2143 connected with the inner wall of the leakage hole 214 is installed on the inner wall of the V-shaped opening of the pushing blocks 2142, and a guiding groove 2144 for limiting the pushing blocks 2142 is arranged on the inner wall of the leakage hole 214;
the side wall of the pushing block 216 is connected with a deflection block 217, the side wall of the deflection block 217 is provided with a plurality of pushing rubber rings 218, the side wall of one end, far away from the pushing block 216, of the deflection block 217 is provided with a pushing piece 219 connected with the pushing block 216, and the pushing piece 219 (an elastic column can be selected, such as a spring column, and a rubber column can be selected) is used for applying movable pushing force to the deflection block 217, so that when the deflection block 217 contacts with agricultural products, the phenomenon that the agricultural products are pushed up by the agricultural products with larger volume to cause overlarge pressure applied to the agricultural products or the agricultural products are not contacted to cause the agricultural products to be incapable of entering the leaking holes 214 with the volume corresponding to the agricultural products is avoided.
In order to prevent the agricultural products from being stuck in the leaking hole 214 and being cut by the edge of the leaking hole 214, when the agricultural products enter one leaking hole 214, the agricultural products further contact the pushing block 2142, at this time, the agricultural products slightly push the pushing block 2142 to move towards the guiding groove 2144, at the same time, the top pressing member 219 pushes the deflecting block 217 and the pushing rubber ring 218, so that the pushing rubber ring 218 applies a downward pressure to the agricultural products, then the downward-pressed agricultural products directly push the pushing block 2142 to move further towards the guiding groove 2144, at the same time, the pushing element 2143 (which can be selected by a spring) is compressed, at this time, if the distance between the pushing blocks 2142 is larger than the volume of the agricultural products, the agricultural products can fall into the container 24, if the distance between the pushing blocks 2142 is smaller than the volume of the agricultural products, because the continuously-moving pushing block 216 pushes the deflecting block 217 and the pushing rubber ring 218 to move together, the movable push rubber ring 218 will apply a lateral force to the produce causing the produce to slide along the inclined surface of the push block 2142 and out of the current escape aperture 214.
As shown in fig. 1, 5, 6 and 7, the rotary switching disk 23 includes a driving ring 231 connected to one end of the spindle 22 away from the blocking cover 211, a plurality of pressing strips 232 are connected to a surface of the driving ring 231 near one end of the blocking cover 211, a retaining ring 233 connected to the fixed disk 213 is disposed at one end of the driving ring 231 near the blocking cover 211, a plurality of rotation slots 234 having a right trapezoid structure and used for pushing the pressing strips 232 to move toward one side away from the retaining ring 233 are disposed at one end of the retaining ring 233 near the driving ring 231, an embedding ring slot 235 for retaining the driving ring 231 is disposed on an inner side wall of the fixed storage cylinder 1, and a return spring 236 having an end surface connected to the driving ring 231 and used for pushing the driving ring 231 to return is mounted in the embedding ring slot 235;
a limit sleeve 221 is arranged on the side wall of one end of the mandrel 22, which is far away from the sealing cover 211, and a lifting ring sleeve 222 connected with the driving ring 231 is sleeved on the side wall of the limit sleeve 221;
in this embodiment, the mandrel 22 directly drives the position-limiting sleeve 221 to move together, and the specific structure of the position-limiting sleeve 221 is as shown in fig. 3, which can drive the lifting ring sleeve 222 and the driving ring 231 to rotate, and meanwhile, when the lifting ring sleeve 222 moves up and down along with the driving ring 231, the lifting ring sleeve 222 also moves up and down along the position-limiting sleeve 221, but does not move relatively.
In this embodiment, the working principle of the rotary switching disk 23 can refer to the working principle of a multi-refill ball-point pen.
In order to achieve the purpose of independently discharging a plurality of agricultural products (although the screening is completed, the phenomenon that a plurality of agricultural products enter the same escape hole 214 still occurs, so that the agricultural products need to be independently distinguished, so that the sampling of the plurality of agricultural products at the same position simultaneously or successively does not occur), the pressing strip 232 can be driven by the mandrel 22 to rotate clockwise, the pressing strip 232 slides along the inner wall of the current rotation groove 234, the pressing strip 232 is pushed to drive the driving ring 231 to move towards the side far away from the clamping ring 233 along the clamping ring groove 235, the movable driving ring 231 presses the reset spring 236, and after the pressing strip 232 moves to be far away from the current rotation groove 234, the reset spring 236 pushes the driving ring 231 to rise, so that the rising driving ring 231 drives the pressing strip 232 to be clamped into the next rotation groove 234.
As shown in fig. 1 and 2, the jacket sampler 25 includes a sampling tube 251 sleeved in the insertion sliding sleeve 223 and used for storing the agricultural products held by the bearing sheet 243, the inner side wall of the sampling tube 251 is connected with the flow guide block 311, the outer side wall of the bottom of the sampling tube 251 is connected with the pushing clamping tube 225, the inner side wall of the sampling tube 251 is provided with an air-filled ring sleeve 252, the side wall of the air-filled ring sleeve 252 is provided with a plurality of sampling blades 253 for sampling, the sampling blades 253 are located between adjacent guide columns 244, and one end of the air-filled ring sleeve 252 close to the guide columns 244 is provided with a pushing capsule table 254.
A plurality of clamping sliding sleeves 223 are installed on the inner side wall of the driving ring 231, a pushing pressing member 224 is installed on the side wall of each clamping sliding sleeve 223, and a pushing clamping cylinder 225 connected with the cover cylinder sampler 25 is installed at one end, far away from the clamping sliding sleeves 223, of the pushing pressing member 224 (the pushing clamping cylinder 225 and the sampling cylinder 251 can be in threaded connection).
In order to realize a specific sampling action (that is, all agricultural products are screened), in the implementation, the air is firstly inflated towards the specimen collecting bag cover 312 and the air inflation ring sleeve 252 through the inflation piston column 35, so that the specimen collecting bag cover 312 and the air inflation ring sleeve 252 are in the state shown in fig. 2, at this time, the bag platform 254 is pushed to push the positioning strip 246 to be tightly attached to the side wall of the agricultural product, so that the agricultural product is more easily contacted with the sampling blade 253 (the positioning strip 246 can be a metal wire or the like, and the length of the sampling blade 253 is set to be different to avoid insufficient sampling).
When the driving ring 231 drives the engaging sliding sleeve 223 and the sampling tube 251 to move up and down together (the engaging sliding sleeve 223 and the sampling tube 251 should be in sliding connection, that is, the engaging sliding sleeve 223 can drive the sampling tube 251 to slide up and down, but after the sampling tube 251 is blocked, the engaging sliding sleeve 223 can slide along the sidewall of the sampling tube 251, and the engaging sliding sleeve 223 and the sampling tube 251 can be in sleeved connection with each other with a larger friction force), once the sampling tube 251 contacts the blocking block 31, the position of the sampling tube 251 is not changed, but the engaging sliding sleeve 223 can slide along the sidewall of the sampling tube 251 and compress the pushing member 224, and after the driving ring 231 is reset, the pushing member 224 can also reset.
When the sampling tube 251 moves to the position where it passes through the groove 32, if the driving ring 231 drives the slide sleeve 223 and the sampling tube 251 to move downward, then the sampling blade 253 scrapes the sidewall of the agricultural product for sampling, and because the agricultural product is fixed by the retaining sleeve column 241, the guide sleeve 242 and the bearing plate 243, the sampling blade 253 moves relative to the agricultural product to achieve the purpose of sampling.
As shown in fig. 1 and 2, the storage device 24 includes a plurality of supporting sleeve columns 241 connected to the side wall of the mandrel 22, a guiding sleeve 242 is connected to one end of the supporting sleeve column 241 far from the mandrel 22, a carrying sheet 243 for supporting the agricultural products is disposed on one side of the guiding sleeve 242 close to the jacket sampler 25, a plurality of guiding columns 244 connected to the guiding sleeve 242 are disposed between the carrying sheet 243 and the guiding sleeve 242, a pulling member 245 is disposed in the guiding column 244, and a separating bar 246 connected to the carrying sheet 243 is disposed at one end of the pulling member 245 far from the guiding column 244.
In this embodiment, the diameter of the plurality of guide sleeves 242 should be set in a linear increasing trend in the counterclockwise direction, and the number of the guide sleeves 242 is larger than the number of the escape holes 214, so that it can be avoided that a plurality of agricultural products enter the same guide sleeve 242, and the mandrel 22 rotates in the clockwise direction, so that the agricultural products with large volume gradually enter the guide sleeve 242 with large diameter.
Taking fig. 5 as an example, when a plurality of agricultural products are sifted and stored, if a plurality of agricultural products of the same volume (there may be a relatively small volume) are sifted from the same sifting hole 214 (for example, the sifting hole 214 on the left side in fig. 3), then a guide sleeve 242 and a hood-barrel sampler 25 are conveniently located under the sifting hole 214 to hold the agricultural products if the next agricultural product falls from the sifting hole 214, then the rotating wheel changing plate 23 will drive the current guide sleeve 242 and hood-barrel sampler 25 away from the sifting hole 214 (clockwise to the position just below the next sifting hole 214), then the sifting hole 214 will continue to drop the agricultural products, and the next guide sleeve 242 and hood-barrel sampler 25 (in a counterclockwise direction) will also continue to hold the agricultural products.
When the agricultural products are screened out from the leaking hole 214, if the agricultural products are not screened out from the leaking hole 214, but the agricultural products are screened out from the next leaking hole 214 (that is, the large-volume agricultural products are screened out from the next leaking hole 214, and the next position of the position is calculated according to the clockwise direction), the current guide sleeve 242 and the cover cylinder sampler 25 corresponding to the leaking hole 214 will be left, and at this time, the current guide sleeve 242 and the cover cylinder sampler 25 will be driven by the rotating wheel changing disc 23 to move to the position right below the next leaking hole 214 and support the large-volume agricultural products, so that the operation is circulated, and the phenomenon that a plurality of agricultural products enter the same guide sleeve 242 can be avoided.
When the agricultural product falls from the leakage hole 214, the agricultural product directly falls into the guide sleeve 242 and slides down along the guide column 244 until being lifted by the carrying sheet 243, and at the moment, the positioning strip 246 can limit, partition and fix the agricultural product, so that the sampling is performed on the side wall of the agricultural product during the subsequent sampling.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.
Claims (10)
1. The utility model provides a be applied to preprocessing device that agricultural product pesticide remained and detect which characterized in that: the agricultural product sampler comprises a fixed storage barrel (1) for storing a plurality of externally input agricultural products, wherein a continuous sampling mechanism (2) for sampling a single agricultural product in multiple directions is connected in the fixed storage barrel (1), and an auxiliary processing mechanism (3) connected with the continuous sampling mechanism (2) is arranged at the bottom of the fixed storage barrel (1);
the auxiliary processing mechanism (3) is used for extruding samples obtained by multi-directional sampling so as to perform primary crushing action, and is used for gathering the crushed samples together after finishing the primary crushing action and applying increased extrusion force to the gathered samples so as to perform multi-stage crushing action of gathering the samples.
2. The pretreatment device of claim 1, wherein the pretreatment device is used for detecting pesticide residues in agricultural products, and comprises: the continuous sampling mechanism (2) comprises a continuous screening mechanism (26) connected with the inner wall of the fixed storage cylinder (1), one side, close to the bottom of the fixed storage cylinder (1), of the continuous screening mechanism (26) is connected with a cover cylinder sampler (25) used for sampling agricultural products in multiple directions, and one side, close to the bottom of the fixed storage cylinder (1), of the cover cylinder sampler (25) is directly connected with the auxiliary processing mechanism (3);
the auxiliary processing mechanism (3) comprises a sample gathering and unfolding device (31) which is connected with the inner wall of the cover barrel sampler (25) and used for storing a crushed sample, a force application level crusher (32) is sleeved in the inner side of the sample gathering and unfolding device (31), the bottom of the sample gathering and unfolding device (31) is connected with a shaping moving device (33), and one end, far away from the sample gathering and unfolding device (31), of the force application level crusher (32) is connected with a fixed point driver (34);
carry out diversified sample through cover section of thick bamboo sampler (25) right sample agricultural product, rethread fixed point driver (34) guide application of force is in the rotatory extrusion breakage that takes out in with cover section of thick bamboo sampler (25) diversely of breaker (32) with the appearance thick liquid that obtains preliminary crushed aggregates, court gather and let in gas in appearance expander (31) and will gather the inboard volume of appearance expander (31) and reduce, make simultaneously moulding activity ware (33) are along with gather appearance expander (31) activity and assemble the appearance thick liquid of preliminary crushed aggregates, court again let in application of force level breaker (32) gas will application of force level breaker (32) apply the extrusion force of the appearance thick liquid of giving preliminary crushed aggregates and progressively increase with further crushing appearance thick liquid.
3. The pretreatment device of claim 2, wherein the pretreatment device is used for detecting pesticide residues in agricultural products, and comprises: the sample gathering spreader (31) comprises a flow guide block (311) connected in the hood-shaped sampler (25) and a sample gathering capsule cover (312) arranged at the bottom of the hood-shaped sampler (25), an installation groove (313) is arranged in the flow guide block (311), a fixing column (314) for fixing the end part of the specimen-gathering capsule cover (312) is installed in the installation groove (313), and a jacking piece (315) which is connected with the specimen capsule cover (312) and is used for pushing the specimen capsule cover (312) to bend and lift is arranged in the mounting groove (313), the inner wall of the poly-sample sac cover (312) is connected with a plurality of pushing blocks (316) with V-shaped longitudinal sections, a sliding limiting block (317) used for limiting the pushing block (316) is arranged on the inner wall of the poly-sample capsule cover (312), the inner wall of the bottom of the specimen gathering bag cover (312) is provided with a connecting strip (318);
force application level breaker (32) are including through connection in gather appearance bag cover (312) bottom expansion post (321), expansion post (321) keep away from gather appearance bag cover (312) one end with moulding activity ware (33) is connected the lateral wall of expansion post (321) is connected with activity pressure regulating piece (322) the inside wall of activity pressure regulating piece (322) is installed and is returned piece (323) of being connected with expansion post (321) inner wall.
4. The pretreatment device of claim 3, wherein the pretreatment device is used for detecting pesticide residues in agricultural products, and comprises: the shaping moving device (33) comprises a shaping and inflating cover (331) connected with the bottom of the cover barrel sampler (25), one end, close to the expansion column (321), of the shaping and inflating cover (331) is connected with an inflating and lifting frame (332) used for pushing the bottom of the sample gathering bag cover (312) to lift, and an expansion ring (333) used for increasing the tightness of the bottom of the expansion column (321) and the sample gathering bag cover (312) is installed on the inflating and lifting frame (332).
5. The pretreatment device of claim 4, wherein the pretreatment device is used for detecting pesticide residues in agricultural products, and comprises: the fixed point driver (34) comprises a blocking block (341) connected to the inner side wall of the bottom of the fixed storage cylinder (1), a through groove (342) is formed in the blocking block (341), a driving wheel (343) is connected to the inner wall of the bottom of the fixed storage cylinder (1), one end, close to the shaping and inflating cover (331), of the inflating column (321) penetrates through the shaping and inflating cover (331) and is connected with an inflating piston column (344) used for inflating towards the inside of the inflating column (321), the shaping and inflating cover (331) and the sample gathering bag cover (312) at the same time;
the inflation piston column (344) comprises an inflation column (345) connected with a driving wheel (343), a movable blocking column (346) connected with an expansion column (321) is sleeved in the inflation column (345), a sealing spring (347) connected with the movable blocking column (346) is installed in the inflation column (345), and an air guide blocking column (348) installed at the bottom of the inflation column (345) and penetrating the end part of the sealing spring (347) into the movable blocking column (346) is sleeved in the sealing spring (347).
6. The pretreatment device of claim 2, wherein the pretreatment device is used for detecting pesticide residues in agricultural products, and comprises: the continuous screening mechanism (26) comprises a screening disc (21) which is connected with the top end of the fixed storage cylinder (1) and is used for screening a plurality of agricultural products thrown into the fixed storage cylinder (1), a mandrel (22) driven by a driver is connected at the axis position of the screening disc (21) in a penetrating way, one end of the mandrel (22) close to the screening disc (21) is connected with a rotating wheel disc (23), the rotary wheel disc (23) is arranged on one side of the screening disc (21) close to the bottom of the fixed storage cylinder (1), one side of the rotating wheel disc (23) far away from the sieving disc (21) is connected with a storage device (24) which is used for storing agricultural products and is pushed by the rotating wheel disc (23) to replace the current sampled agricultural products, one side of the storage device (24) far away from the rotating wheel disc (23) is connected with the cover cylinder sampler (25);
screening a plurality of agricultural products thrown into in the fixed storage barrel (1) through screening dish (21) to make a plurality of agricultural products independently deposit in storage ware (24) according to the volume size, rethread driver drive dabber (22) is rotatory, make rotatory dabber (22) drive rotate change dish (23) and rotate, and through pivoted rotate change dish (23) guide cover section of thick bamboo sampler (25) activity from top to bottom in order to carry out diversified sample to single agricultural product, drive cover section of thick bamboo sampler (25) through pivoted rotate change dish (23) again and use dabber (22) as the axle center rotation in order to implement and change present sample agricultural product and carry out diversified sample action to next agricultural product, the auxiliary processing mechanism of redriving (3) carry out the preliminary treatment to the sample of taking out in order to obtain the agricultural product detection article.
7. The pretreatment device of claim 6, wherein the pretreatment device is used for detecting pesticide residues in agricultural products, characterized in that the screening disc (21) comprises a sealing cover (211) connected with the top end of the fixed storage cylinder (1), a row-throwing square hole (212) is arranged on the blocking cover (211), a fixed disc (213) connected with the inner wall of the fixed storage cylinder (1) is arranged on one side of the blocking cover (211) close to the fixed storage cylinder (1), a plurality of leakage holes (214) are annularly arranged on the surface edge of the fixed disc (213), a guiding feeding table (215) which is sleeved outside the mandrel (22) and is used for feeding agricultural products towards the leakage hole (214) is arranged on the surface of the fixed disc (213), a pushing block (216) which is connected with the mandrel (22) and is used for pushing the agricultural products into the leakage hole (214) under the driving of the mandrel (22) is arranged on the surface of one side, close to the fixed disc (213), of the sealing cover (211);
an auxiliary ring block (2141) is arranged in the leakage hole (214), the auxiliary ring block (2141) comprises a plurality of pushing blocks (2142) with V-shaped longitudinal sections, an ejector (2143) connected with the inner wall of the leakage hole (214) is arranged on the inner wall of a V-shaped opening of the pushing blocks (2142), and a guide groove (2144) for limiting the pushing blocks (2142) is arranged on the inner wall of the leakage hole (214);
the side wall of the pushing block (216) is connected with a deflection block (217), the side wall of the deflection block (217) is provided with a plurality of pushing rubber rings (218), and the side wall of one end, far away from the pushing block (216), of the deflection block (217) is provided with a jacking piece (219) connected with the pushing block (216).
8. The pretreatment device for pesticide residue detection in agricultural products according to claim 7, wherein the rotating wheel disk (23) comprises a driving ring (231) connected with one end of the sealing cover (211) far away from the core shaft (22), a plurality of pressing strips (232) are connected to the surface of one end of the driving ring (231) close to the sealing cover (211), a clamping ring (233) connected with the fixed disk (213) is arranged at one end of the driving ring (231) close to the sealing cover (211), a plurality of right-angle trapezoidal structures are arranged at one end of the clamping ring (233) close to the driving ring (231), the pressing strips (232) move towards the wheel rotation groove (234) far away from one side of the clamping ring (233), a clamping ring groove (235) for clamping the driving ring (231) is arranged on the inner side wall of the fixed storage barrel (1), an end face connected with the driving ring (231) is arranged in the clamping ring groove (235), and the driving ring (231) is pushed by the driving ring and driven ring (231) and connected with the end face (231) A reset spring (236) for resetting;
driving a driving ring (231) through a mandrel (22), enabling a pressing strip (232) to slide along the inner wall of a current rotation groove (234), thereby pushing the pressing strip (232) to drive the driving ring (231) to move towards one side far away from a clamping ring (233), and pressing a reset spring (236) through the movable driving ring (231), wherein after the pressing strip (232) moves to be separated from the current rotation groove (234), the reset spring (236) pushes the driving ring (231) to rise, thereby enabling the rising driving ring (231) to drive the pressing strip (232) to be clamped into the next rotation groove (234);
a limit sleeve (221) is arranged on the side wall of one end, away from the sealing cover (211), of the mandrel (22), and a lifting ring sleeve (222) connected with the driving ring (231) is sleeved on the side wall of the limit sleeve (221);
the inner side wall of the driving ring (231) is provided with a plurality of clamping sliding sleeves (223), the side wall of each clamping sliding sleeve (223) is provided with a pushing pressing piece (224), and one end, far away from the clamping sliding sleeve (223), of each pushing pressing piece (224) is provided with a pushing clamping cylinder (225) connected with the cover cylinder sampler (25).
9. The pretreatment device for detecting pesticide residues in agricultural products according to claim 8, wherein the storage device (24) comprises a plurality of support sleeve columns (241) connected with the side wall of the mandrel (22), one ends of the support sleeve columns (241) far away from the mandrel (22) are connected with guide sleeves (242), one sides of the guide sleeves (242) close to the mantle sampler (25) are provided with bearing sheets (243) used for supporting the agricultural products, a plurality of guide columns (244) connected with the guide sleeves (242) are arranged between the bearing sheets (243) and the guide sleeves (242), pulling members (245) are installed in the guide columns (244), and one ends of the pulling members (245) far away from the guide columns (244) are provided with dividing strips (246) connected with the bearing sheets (243).
10. The pretreatment device for detecting pesticide residues in agricultural products according to claim 9, wherein the hood sampler (25) comprises a sampling tube (251) sleeved in the embedded sliding sleeve (223) and used for storing the agricultural products supported by the carrying sheet (243), the inner side wall of the sampling tube (251) is connected with the flow guide block (311), the outer side wall of the bottom of the sampling tube (251) is connected with the pushing clamping cylinder (225), the inner side wall of the sampling tube (251) is provided with an air-filled ring sleeve (252), the side wall of the air-filled ring sleeve (252) is provided with a plurality of sampling blades (253) for sampling, the sampling blades (253) are located between adjacent guide columns (244), and one end of the air-filled ring sleeve (252) close to the guide columns (244) is provided with a pushing capsule table (254).
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| CN117250030A (en) * | 2023-11-14 | 2023-12-19 | 盱眙县综合检验检测中心 | Food pesticide residue detection method and detection device thereof |
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| CN113418761B (en) | 2024-03-12 |
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