CN118150282A - Pretreatment device for pesticide detection - Google Patents

Abstract

The invention discloses a pretreatment device for pesticide detection, which relates to the technical field of pretreatment tools for pesticide detection, and comprises a treatment box and baffle plates fixedly arranged at two sides in the treatment box, wherein the inside of the treatment box is sequentially divided into a primary collection cavity, a middle collection cavity and a separation cavity by the baffle plates, a conveying cylinder is transversely and fixedly arranged in the upper part of the primary collection cavity, a rotary net cylinder is movably arranged in the upper part of the middle collection cavity, the inner end of the rotary net cylinder is in sealed rotary connection in a sealing sleeve, a protective cover is covered on the outer wall of the sealing sleeve, and a transmission mechanism is arranged in the protective cover; the crushing box is internally provided with a crushing mechanism; a separation mechanism is arranged in the separation cavity; according to the invention, the processing box, the conveying cylinder, the rotary net cylinder and the crushing box are matched, so that liquid collection operation of different parts of agricultural products needing to be detected for pesticide residue is facilitated, and juice in pulp fibers can be fully separated from pulp; the accuracy of detecting pesticide residue in agricultural products is improved.

Description

Pretreatment device for pesticide detection

Technical Field

The invention relates to the technical field of pretreatment tools for pesticide detection, in particular to a pretreatment device for pesticide detection.

Background

Agricultural products are various agricultural cultivated plants, including grain crops and cash crops, the relationship between people and food is expressed, the reasonable diet collocation can bring health to people, more people begin to cultivate the agricultural products, and meanwhile, the problem of detecting the pesticide residue of green agricultural products is more and more emphasized;

The current pretreatment device is a pretreatment system and a pretreatment process for detecting harmful element residues of agricultural products, for example, the patent application number is CN202010767258.X, the pretreatment system comprises a fixed base, a connecting column, a connecting plate, a mounting plate and a mounting roller, wherein the connecting column is uniformly arranged at four corners of the upper end of the fixed base, the middle part of the connecting column is connected through the connecting column, the mounting plate is fixed at the upper end of the connecting column, and the mounting roller is arranged at the upper end of the mounting plate; the pretreatment process of crushing and pulping the agricultural products firstly avoids the situation that the detection result is error due to uneven distribution of harmful element residues;

although the above technology can be used for carrying out crushing pretreatment and pulping operation on agricultural products before detecting the agricultural products, the above technology is also faced with the problem that the crushed lump-shaped pulps cannot be fully crushed when the agricultural products are crushed, for example, the crushing treatment on the agricultural products cannot be completed in the process of conveying the crushed jade pulps, and the above technology has the advantages that after the pulps are initially crushed, the crushed lump pulps are easily pushed to the edge of the crushing device by the crushing device, so that a large amount of lump agricultural product samples cannot be fully crushed into pulp, and the detection data of the pulp produced later is influenced; therefore, a pretreatment device for pesticide detection is proposed, which can collect juice for a plurality of times for agricultural products.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a pretreatment device for pesticide detection.

In order to achieve the above purpose, the present invention adopts the following technical scheme: the pretreatment device for pesticide detection comprises a treatment box and baffle plates fixedly arranged at two sides in the treatment box, wherein the inside of the treatment box is sequentially divided into a primary collection cavity, a middle collection cavity and a separation cavity by the baffle plates, a collection box is arranged on the inner bottom surface of the primary collection cavity, a filter box is arranged on the inner bottom surface of the middle collection cavity, a strip-shaped liquid collection box is arranged on one side of the inner bottom surface of the primary collection cavity, a conveying cylinder for conveying agricultural products to be detected is transversely and fixedly arranged in the upper part of the primary collection cavity, a rotary net cylinder is movably arranged in the upper part of the middle collection cavity, a bearing round opening is formed in the upper part between the primary collection cavity and the middle collection cavity, and the discharge end of the conveying cylinder extends into the middle collection cavity through the bearing round opening and is fixedly sleeved with a sealing sleeve; the inner end of the rotary net drum is connected inside the sealing sleeve in a sealing and rotating way, a protective cover is arranged on the outer wall of the sealing sleeve in a rotating way, and a transmission mechanism for rotating the rotary net drum is arranged inside the protective cover; a rectangular blanking port is formed in the bottom of the rotary net drum, a crushing box with an upward opening is fixedly arranged in the blanking port, and a crushing mechanism for crushing pulp is arranged in the crushing box; a circular opening is formed in the upper part between the middle collecting cavity and the separating cavity, a discharging cylinder is fixedly arranged in the circular opening, and the inner end of the discharging cylinder extends into the middle collecting cavity and is in sealing movable connection with the outer end of the rotary net cylinder; a discharging sealing plate with a discharging gap at the bottom is arranged in the outer end of the discharging cylinder, and a separating mechanism for pulp dewatering is arranged in the separating cavity; the conveying cylinder is internally provided with a spiral conveying blade roller which extends from the inside of the rotary net cylinder to the inside of the discharging cylinder in a rotating way.

Preferably, the outer end of the conveying cylinder penetrates through the treatment box and is arranged in a closed manner; a servo motor for driving the spiral conveying blade roller is arranged on the outer end surface of the conveying cylinder; one side of the top of the treatment box is penetrated and provided with a hopper for feeding materials into the conveying cylinder.

Preferably, the inner end surface of the rotary net cylinder is in sealing and movable fit with the discharge end surface of the conveying cylinder, the cross section of the crushing box is U-shaped, and a plurality of drain holes are formed in the outer wall of the bottom of the conveying cylinder, which is positioned in the primary collecting cavity, at equal intervals; a plurality of juice discharging holes are uniformly formed in the outer wall of the bottom of the discharging cylinder.

Preferably, the lower part of the front end surface of the processing box is matched with the collecting box and the filtering box to form a drawing port, the top of the filtering box is provided with a collecting filter bucket for collecting juice, the inner bottom surface of the filtering box is provided with a reverse filtering box for reversely filtering the juice, and the opening of the reverse filtering box is opposite to the liquid outlet at the bottom of the collecting filter bucket.

Preferably, the crushing mechanism comprises a main shaft transversely arranged in the middle of the crushing box in a rotating way, a secondary shaft rotationally arranged at the front end and the rear end of the inside of the crushing box and a self-locking motor arranged on the outer end face of the crushing box and used for driving the main shaft, wherein a plurality of quadrangular sharp-corner-shaped crushing blocks are equidistantly welded on the peripheral side of the outer wall of the main shaft, a plurality of crushing blocks are equidistantly welded on the peripheral side of the outer wall of the secondary shaft, the crushing blocks are of block structures with wide outer ends and narrow inner ends, and the crushing block bodies are twisted for sixty degrees; the shredding blocks on the main shaft and the shredding blocks on the auxiliary shaft are arranged in a left-right staggered mode.

Preferably, one ends of the main shaft and the auxiliary shaft movably penetrate into the protective cover, the inner end of the main shaft is fixedly sleeved with a first gear, and the inner end of the auxiliary shaft is fixedly sleeved with a second gear meshed with the first gear.

Preferably, the transmission mechanism comprises an outer toothed ring fixedly sleeved at the middle part of the outer wall of the sealing sleeve, a rolling gear slidingly sleeved at the inner end of the main shaft and a stabilizing annular plate arranged at the opening of the inner end of the protective cover, and the stabilizing annular plate is rotatably sleeved on the outer wall of the sealing sleeve; the rolling gear is positioned on a main shaft at the inner side of the first gear, and a plurality of rotation stopping convex strips are welded at the periphery of the outer wall at the inner end of the main shaft at equal intervals; the inner ring wall of the rolling gear is provided with a rotation stopping notch in a matching way, and the rotation stopping convex strips are inserted into the rotation stopping notch of the rolling gear; the rolling gear is meshed with the outer gear ring for transmission; and electric push rods for sliding the rolling gears on the main shaft to be meshed with the outer gear ring are transversely arranged at the front end and the rear end of the lower part of the inner wall of the stabilizing ring plate.

Preferably, the separating mechanism comprises squeeze rollers longitudinally rotating on two sides of the inner part of the separating cavity, a driving assembly installed at the rear end of the processing box and used for reversely rotating the two squeeze rollers, and a separating inclined plate arranged below the squeeze rollers, a flow guiding inclined plate inclined towards the inner part of the liquid collecting box is arranged at the bottom of the outer end of the separating inclined plate, and the bottom end of the flow guiding inclined plate is fixedly connected with the liquid collecting box.

Preferably, the other side of the treatment box is open, a baffle plate for removing the slag in the later stage is arranged in the opening at the other side of the treatment box, a slag discharging port is arranged at the lower part of the baffle plate, and the bottom of the outer end of the separation sloping plate is erected at the bottom of the slag discharging port; splash-proof plates for guiding the falling of the pulp blocks are longitudinally arranged above the inclined sides of the two squeeze rollers.

Preferably, the driving assembly comprises a driving box arranged at the rear end of the treatment box, a driving motor arranged at one side of the rear end of the driving box and a transmission gear which is mutually meshed with the driving box, wherein the roll shafts of the two extrusion rolls movably penetrate into the driving box and are connected with the transmission gear; the driving shaft of the driving motor is fixedly connected with the roll shaft of one extrusion roll in a coaxial way.

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

1. According to the invention, the processing box, the conveying cylinder, the rotary net cylinder and the crushing box are matched, so that liquid collection operation of different parts of agricultural products needing to be detected for pesticide residue is facilitated, and the juice in pulp fibers can be fully separated from pulp; the accuracy of detecting pesticide residue in agricultural products is improved; the crushing mechanism is matched with the sealing sleeve and the transmission mechanism, so that crushing treatment of agricultural products is conveniently and fully completed in the process of conveying the agricultural products, juice in pulp fragments can be thrown out in a centrifugal force mode, juice generated during pulp crushing is conveniently collected, the pulp can be automatically conveyed into the rotary net barrel again after being crushed, and the spiral conveying blade roller is enabled to continuously convey the crushed pulp without manually cleaning the crushed pulp from the crushing box; the convenience for pulp pretreatment is improved;

2. The invention also facilitates the crushing and dewatering operation of the crushed pulp by the cooperation of the separating mechanism and the separating sloping plate and the diversion sloping plate, is convenient for thoroughly separating the juice left in the pulp from pulp fibers, and the separated juice can pass through the separating sloping plate and flow into the liquid collecting box along the diversion sloping plate; the dehydrated pulp fibers are discharged out of the treatment box from the slag discharging port along the separation sloping plate; the pretreatment efficiency of agricultural products before pesticide detection is further improved.

Drawings

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

FIG. 1 is a schematic view of a first view angle structure of the present invention;

FIG. 2 is a schematic diagram of an overall second view structure according to the present invention;

FIG. 3 is a schematic view of a first view of the interior of the processing chamber of the present invention;

FIG. 4 is a schematic view of a second view of the interior of the processing chamber of the present invention;

FIG. 5 is a schematic view of a first view of the treatment chamber of the present invention shown disassembled;

FIG. 6 is a schematic view of a second view of the treatment chamber of the present invention after disassembly;

FIG. 7 is a schematic illustration of the structural positions of the transfer cylinder and the rotating wire cylinder and squeeze rolls of the present invention;

FIG. 8 is a schematic diagram of the connection state of the conveying cylinder and the rotary net cylinder;

FIG. 9 is a schematic diagram of the positional relationship between a rotary screen drum and a collection filter funnel according to the present invention;

FIG. 10 is a schematic view of a rotary screen drum and seal sleeve according to the present invention;

FIG. 11 is a schematic view of the structure of the spiral conveying blade roll and the rotary net drum of the present invention;

FIG. 12 is a schematic view of the stabilizing ring plate and rotating net drum structure of the present invention;

FIG. 13 is a schematic view of the internal structure of the rotary screen drum and the pulverizing box of the present invention;

FIG. 14 is a schematic diagram of a transmission mechanism according to the present invention;

FIG. 15 is a schematic view of a first view of the reducing mechanism of the present invention;

fig. 16 is a schematic view of a second view of the reducing mechanism of the present invention.

Number in the figure: 1. a treatment box; 2.a collection box; 3. a filter box; 4. a delivery cylinder; 5. a hopper; 6. a liquid collecting box; 7. rotating the net drum; 8. a sealing sleeve; 9. a protective cover; 10. a separation sloping plate; 11. a diversion sloping plate; 12. a discharging cylinder; 13. discharging sealing plates; 14. a squeeze roll; 15. a splash shield; 16. collecting a filter bucket; 17. a reverse filtration box; 18. spiral conveying blade rollers; 19. a servo motor; 20. a crushing box; 21. stabilizing the annular plate; 22. a main shaft; 23. a secondary shaft; 24. cutting into pieces; 25. bumping pieces; 26. a self-locking motor; 27. a first gear; 28. a second gear; 29. a rolling gear; 30. an outer toothed ring; 31. rotating the ring plate; 32. an electric push rod; 33. a transmission gear; 34. and driving the motor.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

Embodiment one: referring to fig. 1 to 16, a pretreatment device for pesticide detection comprises a treatment box 1 and partition plates fixedly arranged at two sides in the treatment box 1, wherein the interior of the treatment box 1 is sequentially divided into a primary collection cavity, a middle collection cavity and a separation cavity by the partition plates, a collection box 2 is arranged on the inner bottom surface of the primary collection cavity, a filter box 3 is arranged on the inner bottom surface of the middle collection cavity, a strip-shaped liquid collection box 6 is arranged on one side of the inner bottom surface of the primary collection cavity, a conveying cylinder 4 for conveying agricultural products to be detected is transversely and fixedly arranged in the upper part of the primary collection cavity, a rotary net cylinder 7 is movably arranged in the upper part of the middle collection cavity, a bearing round opening is formed in the upper part between the primary collection cavity and the middle collection cavity, and the discharge end of the conveying cylinder 4 extends into the interior of the middle collection cavity through the bearing round opening and is fixedly sleeved with a sealing sleeve 8; the inner end of the rotary net drum 7 is connected in a sealing and rotating way inside the sealing sleeve 8, a protective cover 9 is arranged on the outer wall of the sealing sleeve 8 in a rotating cover manner, and a transmission mechanism for rotating the rotary net drum 7 is arranged inside the protective cover 9; a rectangular blanking port is formed in the bottom of the rotary net drum 7, a crushing box 20 with an upward opening is fixedly arranged in the blanking port, and a crushing mechanism for crushing pulp is arranged in the crushing box 20; a circular port is formed in the upper part between the middle collecting cavity and the separating cavity, a discharging cylinder 12 is fixedly arranged in the circular port, and the inner end of the discharging cylinder 12 extends into the middle collecting cavity and is in sealing movable connection with the outer end of the rotary net cylinder 7; a discharging sealing plate 13 with a discharging gap at the bottom is arranged in the outer end of the discharging barrel 12, and a separating mechanism for pulp dewatering is arranged in the separating cavity; the conveying cylinder 4 is internally provided with a spiral conveying blade roller 18 which extends from the inside of the rotary net cylinder 7 to the inside of the discharging cylinder 12 in a rotary manner;

According to the invention, through the cooperation of the treatment box 1, the conveying cylinder 4, the rotary net cylinder 7 and the crushing box 20, liquid collection operation of different parts of agricultural products needing to be detected for pesticide residue is facilitated, and juice in pulp fibers can be fully separated from pulp; the accuracy of detecting pesticide residue in agricultural products is improved; the crushing mechanism is matched with the sealing sleeve 8 and the transmission mechanism, so that crushing treatment of agricultural products can be fully completed in the process of conveying the agricultural products, juice in pulp fragments can be thrown out in a centrifugal force mode, juice generated during pulp crushing is conveniently collected, and after pulp is crushed, the juice can be automatically conveyed into the rotary net drum 7 again, so that the spiral conveying blade roller 18 can continuously convey the crushed pulp, and crushed pulp is not required to be cleaned out of the crushing box 20 manually; the convenience for pulp pretreatment is improved;

In the invention, the outer end of the conveying cylinder 4 penetrates through the outside of the treatment box 1 and is arranged in a closed manner; a servo motor 19 for driving the spiral conveying blade roller 18 is arranged on the outer end surface of the conveying cylinder 4; a hopper 5 for feeding materials into the conveying cylinder 4 is penetrated through one side of the top of the treatment box 1, the inner end surface of the rotary net cylinder 7 is in sealing and movable fit with the discharge end surface of the conveying cylinder 4, the cross section of the crushing box 20 is U-shaped, and a plurality of drain holes are formed in the outer wall of the bottom of the conveying cylinder 4, which is positioned in the primary collecting cavity, at equal intervals; a plurality of juice discharging holes are uniformly formed on the outer wall of the bottom of the discharging barrel 12; the lower part of the front end surface of the treatment box 1 is matched with the collection box 2 and the filter box 3 to form a drawing port, the top of the filter box 3 is provided with a collection filter bucket 16 for collecting juice, the inner bottom surface of the filter box 3 is provided with a reverse filter box 17 for reversely filtering the juice, and the opening of the reverse filter box 17 is opposite to the liquid outlet at the bottom of the collection filter bucket 16; facilitating the collection of juice and the settling of pulp fibers from the collection hopper 16.

Embodiment two: the technical scheme is basically the same as that of the first embodiment, except that, as shown in fig. 2, 7, 11, 13, 14, 15 and 16, the crushing mechanism comprises a main shaft 22 transversely arranged in the middle of the crushing box 20 in a rotating manner, a secondary shaft 23 rotatably arranged at the front and rear ends of the inside of the crushing box 20 and a self-locking motor 26 arranged on the outer end surface of the crushing box 20 and used for driving the main shaft 22, a plurality of quadrangular sharp-angle shaped crushing blocks 24 are equidistantly welded on the outer wall periphery of the main shaft 22, a plurality of crushing blocks 25 are equidistantly welded on the outer wall periphery of the secondary shaft 23, the crushing blocks 25 are of a block structure with wide outer ends and narrow inner ends, and the crushing block 25 is in a twisting sixty-degree arrangement; the shredding blocks 24 on the main shaft 22 and the shredding blocks 25 on the auxiliary shaft 23 are arranged in a left-right staggered mode; one end of the main shaft 22 and one end of the auxiliary shaft 23 movably penetrate into the protective cover 9, a first gear 27 is fixedly sleeved at the inner end of the main shaft 22, and a second gear 28 meshed with the first gear 27 is fixedly sleeved at the inner end of the auxiliary shaft 23; through the setting of reducing mechanism, be convenient for carry out the reduction processing with the pulp to when carrying out the reduction processing to the pulp, juice in the pulp can follow row juice Kong Di on smashing case 20 and fall out, if contain the residue of pesticide in the pulp, also have pesticide residue in the fruit juice, follow crushing incasement portion exhaust fruit juice can drip in collecting filter vat 16, and fruit juice passes through the anti-filter box 17 of collecting filter vat 16 drip in filter vat 3, can deposit the pulp fibre in the fruit juice through the setting of anti-filter box 17.

In the invention, the transmission mechanism comprises an external tooth ring 30 fixedly sleeved at the middle part of the outer wall of the sealing sleeve 8, a rolling gear 29 sleeved at the inner end of the main shaft 22 in a sliding way and a stabilizing ring plate 21 arranged at the opening of the inner end of the protective cover 9, wherein the stabilizing ring plate 21 is rotatably sleeved on the outer wall of the sealing sleeve 8; the rolling gear 29 is positioned on the main shaft 22 at the inner side of the first gear 27, and a plurality of rotation stopping convex strips are equidistantly welded on the peripheral side of the outer wall at the inner end of the main shaft 22; the inner ring wall of the rolling gear 29 is provided with a rotation stopping notch in a matching way, and the rotation stopping convex strips are inserted into the rotation stopping notch of the rolling gear 29; the rolling gear 29 is meshed with the external gear ring 30 for transmission; the front and rear ends of the lower part of the inner wall of the stabilizing ring plate 21 are transversely provided with electric push rods 32 which are used for the rolling gears 29 to slide on the main shaft 22 and mesh with the outer tooth ring 30; through the arrangement of the rolling gear 29, the crushing box 20 is conveniently driven to circularly move by taking the sealing sleeve 8 as the center of a circle, agricultural products in the crushing box 20 are conveniently lifted while being crushed, when the crushing box 20 rotates to the highest point, the self-locking motor 26 stops driving the main shaft 22, at the moment, fully crushed fruit pieces in the crushing box 20 can fall into the rotary net drum 7 again, then the servo motor 19 is started to drive the spiral conveying blade roller 18 to rotate, and then pulp which is crushed in the rotary net drum 7 is conveyed into the discharge drum 12; the main shaft 22 can drive the rolling gear 29 to rotate around the outer toothed ring 30 for a plurality of times, so that juice in pulp inside the crushing box 20 can be thrown out in a centrifugal force mode under the circumferential state of the crushing box 20 for a plurality of times, and further the crushed pulp is subjected to centrifugal dehydration.

In the invention, the separating mechanism comprises squeeze rollers 14 which are longitudinally and rotatably arranged at two sides of the inside of the separating cavity, a driving assembly which is arranged at the rear end of the processing box 1 and is used for the opposite rotation of the two squeeze rollers 14, and a separating inclined plate 10 which is arranged below the squeeze rollers 14, wherein the bottom of the outer end of the separating inclined plate 10 is provided with a diversion inclined plate 11 which is inclined towards the inside of the liquid collecting box 6, and the bottom end of the diversion inclined plate 11 is fixedly connected with the liquid collecting box 6; the other side of the treatment box 1 is open, a baffle plate for removing the slag in the later stage is arranged in the opening at the other side of the treatment box 1, a slag discharge port is arranged at the lower part of the baffle plate, and the bottom of the outer end of the separation sloping plate 10 is arranged at the bottom of the slag discharge port; splash-proof plates 15 for guiding the pulp blocks to fall are longitudinally arranged above the two sides of the two squeeze rollers 14; the driving assembly comprises a driving box arranged at the rear end of the treatment box 1, a driving motor 34 arranged at one side of the rear end of the driving box and a transmission gear 33 which is mutually meshed in the driving box, and the roll shafts of the two squeeze rolls 14 movably penetrate into the driving box and are connected with the transmission gear 33; the driving shaft of the driving motor 34 is fixedly connected with the roll shaft of one squeeze roll 14 in a coaxial way; the driving assembly is convenient for driving the two squeeze rollers 14 to rotate relatively, when pulp passes through the space between the two squeeze rollers 14, the pulp is flattened and dehydrated, so that residual juice in the pulp is thoroughly separated from pulp fibers, the residual juice in the pulp is conveniently and thoroughly separated from the pulp fibers, and the separated juice passes through the separation inclined plate 10 and flows into the liquid collecting box 6 along the diversion inclined plate 11; and the dehydrated pulp fibers are discharged out of the treatment box 1 from the slag discharging port along the separation sloping plate 10; the pretreatment efficiency of agricultural products before pesticide detection is further improved.

Working principle: in this embodiment, the present invention further provides a method for using the pretreatment device for pesticide detection, including the following steps:

Firstly, electrically connecting a servo motor 19, a self-locking motor 26, a driving motor 34 and an electric push rod 32 with external control equipment through leads respectively, and then pouring a container soaked with agricultural products into a hopper 5, and pouring the agricultural products and a water body soaked with the agricultural products into a conveying cylinder 4 together;

Secondly, after agricultural products and water bodies enter the conveying cylinder 4 together, waiting for two to five minutes, so that most of the water bodies in the conveying cylinder 4 are discharged out of the conveying cylinder 4 through the water discharge holes, at the moment, the water bodies discharged from the conveying cylinder 4 can fall into the collecting box 2 to be collected, and if pesticide residues remain on the surfaces of the fruit peels, the water bodies in the collecting box 2 contain pesticide residues flushed from the surfaces of the fruit peels;

Step three, after most of the water body in the conveying cylinder 4 drops, at this time, the servo motor 19 is started to drive the spiral conveying blade roller 18 to rotate, and agricultural products in the conveying cylinder 4 are conveyed towards the inside of the rotary net cylinder 7 conveniently through the rotation of the spiral conveying blade roller 18, at this time, as the crushing box 20 is positioned below the rotary net cylinder 7, after the agricultural products enter the rotary net cylinder 7 through the spiral conveying blade roller 18, the agricultural products fall into the crushing box 20, and when the spiral conveying blade roller 18 completely conveys the agricultural products in the conveying cylinder 4 into the crushing box 20, the driving of the servo motor 19 on the spiral conveying blade roller 18 is stopped;

Step four, starting a self-locking motor 26 to drive a main shaft 22 to rotate, synchronously driving two auxiliary shafts 23 to reversely rotate through the cooperation of a first gear 27 and a second gear 28 when the main shaft 22 rotates, synchronously and reversely rotating the main shaft 22 and the two auxiliary shafts 23 so as to fully crush agricultural products falling into the crushing box 20, crushing pulp conveniently by crushing the agricultural products, discharging juice Kong Di from the crushing box 20 when the pulp is crushed, dripping the juice discharged from the inside of the crushing box 20 into a collection filter bucket 16 if pesticide residues are contained in the pulp, dripping the juice discharged from the inside of the crushing box 20 into a reverse filter box 17 in the filter box 3 through the collection filter bucket 16, and precipitating pulp fibers in the juice through the arrangement of the reverse filter box 17;

Step five, when the crushing mechanism crushes agricultural products in the crushing box 20, the electric push rod 32 is in a contracted state, the rolling gear 29 is not meshed with the outer tooth ring 30 when the electric push rod 32 is in a contracted state, and then the main shaft 22 drives the rolling gear 29 to rotate, and the rolling gear 29 is in an idle state and does not perform rolling type circular motion on the outer tooth ring 30 when rotating; in addition, under the arrangement of the rotary ring plate 31, the rotary rolling gear 29 does not drive the electric push rod 32 to do circular motion;

Step six, after the agricultural products in the crushing box 20 are completely crushed, at this time, an electric push rod 32 is started to push a rolling gear 29 to be meshed with an external gear ring 30, after the rolling gear 29 is meshed with the external gear ring 30, the rolling gear 29 rotating along with the main shaft 22 can roll on the external gear ring 30, rolling on the external gear ring 30 through the rolling gear 29 can drive a crushing box 20 installed on the main shaft 22 to circularly move around a sealing sleeve 8 as a circle center, so that the agricultural products in the crushing box 20 are crushed and lifted, when the crushing box 20 rotates to the highest point, the self-locking motor 26 stops driving of the main shaft 22, at this time, fully crushed fruit blocks in the crushing box 20 can fall into a rotary net drum 7 again, then a servo motor 19 is started to drive a spiral conveying blade roller 18 to rotate, and pulp in the rotary net drum 7 after the crushing treatment is conveyed into a discharging drum 12; the main shaft 22 can drive the rolling gear 29 to rotate around the outer toothed ring 30 for a plurality of times, so that juice in pulp in the crushing box 20 can be thrown out in a centrifugal force mode under the circumferential state of the crushing box 20 for a plurality of times, and the crushed pulp is centrifugally dehydrated;

Step seven, conveying all the crushed pulp in the rotary net drum 7 to the discharge drum 12 through the spiral conveying blade roller 18, conveying the crushed pulp towards the direction of a discharge gap of the discharge sealing plate 13 through the spiral conveying blade roller 18 which continuously rotates, and extruding the crushed pulp from the discharge gap of the discharge sealing plate 13; at this time, the extruded pulp falls between the two squeeze rolls 14, and as the two squeeze rolls 14 are only spaced by three to five millimeters, when the pulp passes between the two squeeze rolls 14 driven by the driving assembly, the pulp is flattened and dehydrated, so that the juice left in the pulp is thoroughly separated from pulp fibers, and the separated juice passes through the separation inclined plate 10 and flows into the liquid collecting box 6 along the diversion inclined plate 11; the dehydrated pulp fibers are discharged out of the treatment box 1 from the slag discharging port along the separation sloping plate 10;

Step eight, after finishing the pretreatment operation of detecting pesticide residues on agricultural products, collecting water used for washing the outer skins of the agricultural products by the collecting box 2, dripping and collecting juice when pulp is broken by the inner part of the filtering box 3, and collecting juice pressed out from pulp fibers by the inner part of the collecting box 6; then the liquid levels collected in the collection box 2, the filter box 3 and the liquid collection box 6 are detected one by one through detection instruments, so that the content of pesticide residues in the agricultural products is conveniently known.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims (10)

1. The utility model provides a pesticide detects uses preprocessing device, includes treatment box (1) and fixes the inside both sides baffle of locating treatment box (1), its characterized in that: the inside of the treatment box (1) is sequentially divided into a primary collection cavity, a middle collection cavity and a separation cavity through a partition plate, a collection box (2) is arranged on the inner bottom surface of the primary collection cavity, a filter box (3) is arranged on the inner bottom surface of the middle collection cavity, a strip-shaped liquid collection box (6) is arranged on one side of the inner bottom surface of the primary collection cavity, a conveying cylinder (4) for conveying agricultural products to be detected is transversely and fixedly arranged in the upper part of the primary collection cavity, a rotary net cylinder (7) is movably arranged in the upper part of the middle collection cavity, a bearing round opening is formed in the upper part between the primary collection cavity and the middle collection cavity, and the discharge end of the conveying cylinder (4) extends into the middle collection cavity through the bearing round opening and is fixedly sleeved with a sealing sleeve (8);

The inner end of the rotary net drum (7) is connected inside the sealing sleeve (8) in a sealing and rotating way, a protective cover (9) is arranged on the outer wall of the sealing sleeve (8) in a rotating cover manner, and a transmission mechanism for rotating the rotary net drum (7) is arranged inside the protective cover (9); a rectangular blanking port is formed in the bottom of the rotary net drum (7), a crushing box (20) with an upward opening is fixedly arranged in the blanking port, and a crushing mechanism for crushing pulp is arranged in the crushing box (20);

A circular opening is formed in the upper part between the middle collecting cavity and the separating cavity, a discharging cylinder (12) is fixedly arranged in the circular opening, and the inner end of the discharging cylinder (12) extends into the middle collecting cavity and is in sealing movable connection with the outer end of the rotary net cylinder (7); a discharging sealing plate (13) with a discharging gap at the bottom is arranged in the outer end of the discharging barrel (12), and a separating mechanism for pulp dewatering is arranged in the separating cavity; the conveying cylinder (4) is internally provided with a spiral conveying blade roller (18) which extends from the inside of the rotary net cylinder (7) to the inside of the discharging cylinder (12) in a rotary mode.

2. A pretreatment device for pesticide detection as set forth in claim 1, wherein: the outer end of the conveying cylinder (4) penetrates through the outside of the treatment box (1) and is arranged in a closed manner; a servo motor (19) for driving the spiral conveying blade roller (18) is arranged on the outer end surface of the conveying cylinder (4); one side of the top of the treatment box (1) is penetrated with a hopper (5) for feeding materials into the conveying cylinder (4).

3. A pretreatment device for pesticide detection as set forth in claim 1, wherein: the inner end surface of the rotary net drum (7) is movably attached to the discharging end surface of the conveying drum (4) in a sealing way, the cross section of the crushing box (20) is U-shaped, and a plurality of drain holes are formed in the outer wall of the bottom of the conveying drum (4) positioned in the primary collecting cavity at equal intervals; a plurality of juice discharging holes are uniformly formed in the outer wall of the bottom of the discharging barrel (12).

4. A pretreatment device for pesticide detection as set forth in claim 2, wherein: the utility model discloses a fruit juice collection box, including processing case (1), collection box (2), filter box (3) and filter box (17), filter box (17) are placed on the interior bottom surface of filter box (3), and the opening of reverse filter box (17) is faced the leakage fluid dram of collection filter box (16) bottom.

5. A pretreatment device for pesticide detection as set forth in claim 1, wherein: the crushing mechanism comprises a main shaft (22) transversely arranged in the middle of the crushing box (20) in a rotating mode, a secondary shaft (23) rotatably arranged at the front end and the rear end inside the crushing box (20) and a self-locking motor (26) arranged on the outer end face of the crushing box (20) and used for driving the main shaft (22), a plurality of quadrangular sharp-corner-shaped crushing blocks (24) are equidistantly welded on the peripheral side of the outer wall of the main shaft (22), a plurality of crushing blocks (25) are equidistantly welded on the peripheral side of the outer wall of the secondary shaft (23), the crushing blocks (25) are of a block-shaped structure with wide outer ends and narrow inner ends, and a crushing block (25) body is twisted for sixty degrees; the shredding blocks (24) on the main shaft (22) and the shredding blocks (25) on the auxiliary shaft (23) are arranged in a left-right staggered mode.

6. A pretreatment device for pesticide detection as set forth in claim 5, wherein: one end of each of the main shaft (22) and the auxiliary shaft (23) movably penetrates into the protective cover (9), a first gear (27) is fixedly sleeved at the inner end of the main shaft (22), and a second gear (28) meshed with the first gear (27) is fixedly sleeved at the inner end of the auxiliary shaft (23).

7. The pretreatment device for pesticide detection as set forth in claim 6, wherein: the transmission mechanism comprises an external tooth ring (30) fixedly sleeved at the middle part of the outer wall of the sealing sleeve (8), a rolling gear (29) slidingly sleeved at the inner end of the main shaft (22) and a stabilizing annular plate (21) arranged at the opening of the inner end of the protective cover (9), wherein the stabilizing annular plate (21) is rotationally sleeved on the outer wall of the sealing sleeve (8); the rolling gear (29) is positioned on the main shaft (22) at the inner side of the first gear (27), and a plurality of rotation stopping convex strips are equidistantly welded at the peripheral side of the outer wall at the inner end of the main shaft (22); the inner ring walls of the rolling gears (29) are provided with rotation stopping slots in a matched mode, and the rotation stopping protruding strips are inserted into the rotation stopping slots of the rolling gears (29); the rolling gear (29) is meshed with the external gear ring (30) for transmission; and electric push rods (32) which are used for sliding the rolling gears (29) on the main shaft (22) to be meshed with the external gear ring (30) are transversely arranged at the front end and the rear end of the lower part of the inner wall of the stabilizing ring plate (21).

8. A pretreatment device for pesticide detection as set forth in claim 1, wherein: the separation mechanism comprises squeeze rollers (14) which are longitudinally arranged on two sides of the inside of the separation cavity in a rotating mode, a driving assembly which is arranged at the rear end of the treatment box (1) and used for enabling the two squeeze rollers (14) to reversely rotate, and a separation inclined plate (10) which is arranged below the squeeze rollers (14), wherein a diversion inclined plate (11) which is inclined towards the inside of the liquid collecting box (6) is arranged at the bottom of the outer end of the separation inclined plate (10), and the bottom end of the diversion inclined plate (11) is fixedly connected with the liquid collecting box (6).

9. The pretreatment device for pesticide detection as set forth in claim 8, wherein: the other side of the treatment box (1) is open, a baffle plate for removing slag in the later stage is arranged in the opening at the other side of the treatment box (1), a slag discharge port is formed in the lower part of the baffle plate, and the bottom of the outer end of the separation inclined plate (10) is erected at the bottom of the slag discharge port; splash shields (15) for guiding the falling of the pulp blocks are longitudinally arranged above the two sides of the two squeeze rollers (14).

10. The pretreatment device for pesticide detection as set forth in claim 8, wherein: the driving assembly comprises a driving box arranged at the rear end of the treatment box (1), a driving motor (34) arranged at one side of the rear end of the driving box and a transmission gear (33) which is mutually meshed with the inside of the driving box, and roll shafts of the two squeeze rolls (14) movably penetrate through the inside of the driving box and are connected with the transmission gear (33); the driving shaft of the driving motor (34) is fixedly connected with the roll shaft of one squeeze roll (14) coaxially.