A pesticide residue detection device

Abstract

The present invention discloses a pesticide residue detection device, including a crushing box, the crushing box is a vertical rectangular cavity structure, and a feed hopper is fixedly connected to the center of the upper end surface of the crushing box, a water tank is arranged at the front side below the crushing box, and a water pump is fixedly connected to the bottom surface of the water tank, the output end of the water pump is fixedly connected to a water pipe, and the upper end of the water pipe is fixedly connected to a three-way joint, and the left and right ends of the three-way joint are connected to branch pipes, the inner side of the branch pipes are respectively connected to four nozzles at equal distances, and the nozzles are respectively located at the upper ends of the left and right side walls inside the crushing box, a crushing mechanism is arranged inside the crushing box, and a driving mechanism is arranged at the upper end of the rear side of the crushing box. The pesticide residue detection device can not only wash out the pesticides on the surface of vegetables and fruits, but also squeeze and extract the pesticides inside the vegetables and fruits through the crushing mechanism and the extrusion mechanism, thereby improving the accuracy of pesticide residue detection.

Description

Technical Field

[0001] The invention relates to the technical field of pesticide residue detection, and in particular to a pesticide residue detection device. Background Art

[0002] The development of agricultural industrialization has made the production of agricultural products increasingly dependent on exogenous substances such as pesticides, antibiotics and hormones. The irrational use of these substances will inevitably lead to excessive pesticide residues in agricultural products, affecting consumer food safety. Excessive pesticide residues will also affect the trade of agricultural products. Countries around the world attach great importance to the problem of pesticide residues and have set increasingly stringent limit standards for pesticide residues in various agricultural and sideline products, making the export of agricultural products face severe challenges.

[0003] The existing patent (Announcement No.: CN107748141A) agricultural product pesticide residue detection mechanism includes a substrate, a support plate, an agricultural product loading part, a liquid containing part, a liquid atomizing part, a flow control valve, a valve and a pesticide analyzer. The support plate is arranged in the containing cavity, and the supporting plate separates the containing cavity into a residual pesticide treatment cavity and a detection cavity, and the support plate has a pesticide channel connecting the residual pesticide treatment cavity and the detection cavity. The agricultural product loading part is configured to clamp the agricultural product to be detected. The liquid atomizing part is configured to spray atomized liquid to the agricultural product loading part. The flow control valve is configured to control the liquid of a predetermined flow rate to be sprayed out by the liquid atomizing part. The pesticide analyzer is configured to analyze the liquid discharged from the pesticide channel. The agricultural product pesticide residue detection mechanism has a simple structure, simplifies the detection operation steps, saves operation time, and improves the accuracy of the detection results.

[0004] However, the agricultural product pesticide residue testing agency did not consider the following issues when using it:

[0005] Some systemic pesticides will penetrate into the interior of vegetables, fruits and melons. If the vegetables, fruits and melons are not crushed and juiced for testing, and only the skin of the vegetables, fruits and melons is rinsed and tested, the accuracy of the test data will be low. This is especially true for rural growers. When spraying pesticides on fruit crops, they mostly apply the pesticides based on personal experience. It is difficult to grasp the correct amount of pesticides, which can easily lead to excessive pesticide residues. If the test data is inaccurate, food poisoning is likely to occur, which in turn endangers your health. Summary of the invention

[0006] The purpose of the present invention is to provide a pesticide residue detection device to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pesticide residue detection device, comprising a crushing box, the crushing box is a vertical rectangular cavity structure, and a feed hopper is fixedly connected to the center of the upper end surface of the crushing box, a water tank is arranged at the front side below the crushing box, and a water pump is fixedly connected to the bottom surface of the water tank, the output end of the water pump is fixedly connected to a water pipe, and the upper end of the water pipe is fixedly connected to a three-way joint, and the left and right ends of the three-way joint are connected to branch pipes, the inner sides of the branch pipes are respectively connected to four nozzles at equal distances, and the nozzles are respectively located at the upper ends of the left and right side walls inside the crushing box, a crushing mechanism is arranged inside the crushing box, and a driving mechanism is arranged at the upper end of the rear side of the crushing box;

[0008] The crushing mechanism comprises an active roller, a crawler, crushing teeth, a roller, a driven roller, a primary synchronous roller and a secondary synchronous roller, the rollers at the front and rear ends of the active roller and the primary synchronous roller are respectively movably connected to the bearings in the shaft holes on the front and rear side walls of the crushing box, and the active roller and the primary synchronous roller are connected by a crawler, the rollers of the driven roller and the secondary synchronous roller are respectively movably connected to the bearings in the shaft holes on the front and rear side walls of the crushing box, and the driven roller and the secondary synchronous roller are connected by a crawler, the outer surface of the crawler is evenly fixedly connected with crushing teeth of a conical structure, and the two crawlers are placed in a V shape, and guide plates are relatively inclined below the primary synchronous roller and the secondary synchronous roller, and the upper ends of the guide plates are fixed to the inner wall of the crushing box;

[0009] The driving mechanism comprises a motor fixing seat, a driving motor, a driving gear and a driven gear, wherein the motor fixing seat is fixedly connected to the upper left position of the rear side wall of the crushing box, and the driving motor is fixedly connected to the upper end surface of the motor fixing seat, the output shaft of the driving motor is fixedly connected to the center position of the rear side surface of the driving gear, and the center position of the front side surface of the driving gear is fixedly connected to the roller on the rear side of the driving roller, the driven gear is meshed with the driving gear, and the center of the front side surface of the driven gear is fixedly connected to the roller on the rear side of the driven roller;

[0010] The driving mechanism is provided with an extrusion mechanism below the driving mechanism, and the extrusion mechanism is composed of a main pressure roller and an auxiliary pressure roller, the main pressure roller comprises a roller shaft, a driving pulley, a belt, a driven pulley and a protective shell, the front and rear sides of the main pressure roller are fixedly connected with roller shafts, and the outer end of the front roller shaft is fixedly connected with the driving pulley, the outer end of the front roller shaft of the first-level synchronous drum is fixedly connected with the driven pulley, and the driving pulley and the driven pulley are connected by a belt, the auxiliary pressure roller has the same connection structure as the main pressure roller, and the auxiliary pressure roller and the main pressure roller are in contact with each other, and a protective shell is provided on the outer side of the roller shaft, the driving pulley, the belt and the driven pulley.

[0011] Preferably, the diameter of the driving gear is twice that of the driven gear.

[0012] Preferably, a socket is provided on the left side wall of the crushing box below the extrusion mechanism, and a sealing gasket is fixedly connected to the inner wall of the socket, a filter frame is inserted in the socket, and the filter frame is a rectangular frame structure that penetrates up and down, a primary filter screen plate is provided at the upper end of the inner side of the filter frame, and a secondary filter screen plate is provided at the lower end, the aperture of the primary filter screen plate is larger than that of the secondary filter screen plate, and cylindrical holes are equidistantly provided on the outer side surfaces of the plate frame on the left and right sides of the primary filter screen plate, a spring is fixedly connected to the inner bottom of the cylindrical hole, and the outer end of the spring is fixedly connected to a limit pin, pin grooves matching the limit pin are provided on the left and right side surfaces inside the filter frame, and a pull handle is fixedly connected to the center position of the left side surface of the filter frame.

[0013] Preferably, a support platform is provided below the crushing box, and the lower end of the crushing box is fixedly connected to the upper end surface of the support platform through legs, the lower end box body of the crushing box is a quadrangular pyramid structure, and the lower end box body of the crushing box with a quadrangular pyramid structure is connected to a discharge pipe.

[0014] Preferably, the discharge pipe passes through the through hole at the center position of the upper end surface of the support platform and is connected to the upper end surface of the receiving box below the support platform, and a conical baffle is fixedly connected to the center position of the inside of the receiving box, and a discharge pipe is connected to the center position of the lower end of the right side surface of the receiving box, and a valve is provided on the discharge pipe.

[0015] Preferably, a pesticide residue detector is provided below the material receiving box, and three detection rods equidistantly fixedly connected at the center position of the upper end surface of the pesticide residue detector respectively pass through the corresponding through holes on the lower end surface of the material receiving box to the bottom of the conical baffle, and the liquid level gauge on the left side of the upper end surface of the pesticide residue detector passes through the corresponding through holes on the left side of the lower end surface of the material receiving box to the inside of the material receiving box.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The vegetables and fruits to be tested are fed into the space between the two crawlers of the crushing mechanism inside the crushing box through the feed hopper. The two crawlers are driven to rotate under the action of the driving mechanism, so that the vegetables and fruits are transported downward. As the interval between the two crawlers becomes smaller and smaller, the crushing teeth on the crawlers will crush the vegetables and fruits more and more during the transportation process, and the vegetables and fruits will be initially squeezed. At the same time, during the crushing process, clean water is transported through the nozzle of the water pump box, and the transported fruits are sprayed through the nozzle, so as to wash out the pesticides on the vegetables and fruits;

[0018] 2. An extrusion mechanism is set below the crushing mechanism. The crushed vegetables and fruits continuously fall through the gap between the primary pressing roller and the secondary pressing roller under the action of the guide plate, thereby deeply squeezing the vegetables and fruits, and then squeezing out the pesticides inside the vegetables and fruits to the maximum extent;

[0019] 3. A filter frame is arranged below the extrusion mechanism, and a primary filter screen and a secondary filter screen are arranged inside the filter frame. The primary filter screen filters out the roots, stems, shells and seeds in the vegetables and fruits, and the secondary filter screen filters out small-sized impurities such as mud and sand in the vegetables and fruits, thereby improving the accuracy of subsequent pesticide residue detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 AA section view in;

[0023] Figure 3 For the present invention Figure 1 BB section diagram in;

[0024] Figure 4 It is a shelling view of the outer part of the extrusion mechanism of the present invention;

[0025] Figure 5 It is a top cross-sectional view of the driving mechanism of the present invention;

[0026] Figure 6 A three-dimensional diagram of the filter frame of the present invention;

[0027] Figure 7 For the present invention Figure 2 Enlarged view of point C in the figure.

[0028] Description of reference numerals:

[0029] 1. Feed hopper; 2. Crushing box; 21. Outrigger; 22. Discharge pipe; 3. Water tank; 31. Water pump; 32. Water pipe; 33. Tee joint; 34. Branch pipe; 35. Sprinkler; 4. Driving mechanism; 41. Motor fixing seat; 42. Driving motor; 43. Driving gear; 44. Driven gear; 5. Crushing mechanism; 51. Driving roller; 52. Track; 53. Crushing teeth; 54. Roller; 55. Driven roller; 56. Primary synchronous roller; 57. Secondary synchronous roller; 6. Extrusion mechanism; 61. Main pressing roller; 611. Roller ; 612, driven pulley; 613, belt; 614, driving pulley; 62, auxiliary pressure roller; 63, protective shell; 7, guide plate; 8, socket; 81, sealing gasket; 82, filter frame; 83, primary filter screen; 831, cylindrical hole; 832, spring; 833, limit pin; 834, pin groove; 84, secondary filter screen; 85, handle; 9, support table; 10, pesticide residue detector; 101, detection rod; 102, liquid level meter; 11, material receiving box; 111, conical baffle; 112, valve; 113, discharge pipe. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figures 1 to 7 , the present invention provides a technical solution:

[0032] A pesticide residue detection device, comprising a crushing box 2, the crushing box 2 is a vertical rectangular cavity structure, and a feed hopper 1 is fixedly connected to the center of the upper end surface of the crushing box 2, a water tank 3 is arranged at the front side below the crushing box 2, and a water pump 31 is fixedly connected to the bottom surface of the water tank 3, the output end of the water pump 31 is fixedly connected to a water pipe 32, and the upper end of the water pipe 32 is fixedly connected to a three-way joint 33, and the left and right ends of the three-way joint 33 are connected to branch pipes 34, the inner sides of the branch pipes 34 are respectively connected to four nozzles 35 at equal distances, and the nozzles 35 are respectively located at the upper ends of the left and right side walls inside the crushing box 2, a crushing mechanism 5 is arranged inside the crushing box 2, and a driving mechanism 4 is arranged at the upper end of the rear side of the crushing box 2;

[0033] The crushing mechanism 5 includes an active roller 51, a crawler 52, a crushing tooth 53, a roller 54, a driven roller 55, a primary synchronous roller 56 and a secondary synchronous roller 57. The rollers 54 at the front and rear ends of the active roller 51 and the primary synchronous roller 56 are respectively movably connected to the bearings in the shaft holes on the front and rear side walls of the crushing box 2, and the active roller 51 and the primary synchronous roller 56 are connected by the crawler 52. The rollers 54 of the driven roller 55 and the secondary synchronous roller 57 are respectively movably connected to the bearings in the shaft holes on the front and rear side walls of the crushing box 2, and the driven roller 55 and the secondary synchronous roller 57 are also connected by the crawler 52. The outer surface of the crawler 52 is evenly fixedly connected with the crushing teeth 53 of the conical structure, and the two crawlers 52 are placed in a V shape. The lower parts of the primary synchronous roller 56 and the secondary synchronous roller 57 are relatively inclined and provided with guide plates 7, and the upper ends of the guide plates 7 are fixed to the inner wall of the crushing box 2.

[0034] The driving mechanism 4 includes a motor fixing seat 41, a driving motor 42, a driving gear 43 and a driven gear 44. The motor fixing seat 41 is fixedly connected to the upper left position of the rear side wall of the crushing box 2, and the driving motor 42 is fixedly connected to the upper end surface of the motor fixing seat 41. The output shaft of the driving motor 42 is fixedly connected to the center position of the rear side of the driving gear 43, and the center position of the front side of the driving gear 43 is fixedly connected to the roller 54 on the rear side of the driving roller 51. The driven gear 44 is meshed with the driving gear 43, and the center of the front side of the driven gear 44 is fixedly connected to the roller 54 on the rear side of the driven roller 55.

[0035] The driving mechanism 4 is provided with an extrusion mechanism 6 below the driving mechanism 4, and the extrusion mechanism 6 is composed of a main pressure roller 61 and an auxiliary pressure roller 62, the main pressure roller 61 includes a roller shaft 611, a driving pulley 612, a belt 613, a driven pulley 614 and a protective shell 63, the front and rear sides of the main pressure roller 61 are fixedly connected with the roller shaft 611, and the outer end of the front roller shaft 611 is fixedly connected with the driving pulley 612, the outer end of the front roller shaft 54 ​​of the first-level synchronous drum 56 is fixedly connected with the driven pulley 614, and the driving pulley 612 and the driven pulley 614 are connected by a belt 613, the auxiliary pressure roller 62 has the same connection structure as the main pressure roller 61, and the auxiliary pressure roller 62 and the main pressure roller 61 are in contact with each other, and the outer sides of the roller shaft 611, the driving pulley 612, the belt 613 and the driven pulley 614 are provided with a protective shell 63.

[0036] During operation, the vegetables, fruits and melons to be inspected are put from the feed hopper 1 between the two crawler belts 52 of the crushing mechanism 5, and then the driving motor 42 of the driving mechanism 4 is started to drive the driving gear 43 to rotate, thereby driving the driven gear 44 to rotate, and the driving gear 43 drives the driving roller 51 to rotate, thereby driving the first-level synchronous roller 56 to rotate, and then drives the left crawler belt 52 to rotate clockwise, and at the same time, the driven gear 44 drives the driven roller 55 to rotate, thereby driving the second-level synchronous roller 57 to rotate, and then drives the right crawler belt 52 to rotate counterclockwise, so that the vegetables, fruits and melons are conveyed downward. Since the two crawler belts 52 are fixedly connected with the crushing teeth 53 of the conical structure, and the two crawler belts 52 are placed in a V shape, the crushing force and the squeezing force on the vegetables, fruits and melons in the process of transportation are getting stronger and stronger, and the water pump 31 transmits the clean water in the water tank 3 to the nozzles 35 on the inner side of the branch pipe 34 through the water pipe 32 and the three-way joint 33, and the vegetables, fruits and melons in the crushing process are sprayed and washed through the nozzles 35, so that the pesticides on the surface of the vegetables, fruits and melons are washed out. The crushed vegetables, fruits and melons are restricted above the main pressure roller 61 and the auxiliary pressure roller 62 under the action of the guide plate 7, and the first-level synchronous roller 56 drives the active pulley 614 to rotate, thereby driving the driven pulley 612 to rotate, and then driving the main pressure roller 61 to rotate. Similarly, the auxiliary pressure roller 62 rotates under the drive of the second-level synchronous roller 57, so that the crushed vegetables, fruits and melons are squeezed by the main pressure roller 61 and the auxiliary pressure roller 62, so that the juice and possible residual pesticides inside the vegetables, fruits and melons are squeezed out, thereby improving the degree of pesticide extraction.

[0037] As an embodiment of the present invention, Figure 5 As shown, the diameter of the driving gear 43 is twice that of the driven gear 44 .

[0038] During operation, based on the above embodiment, since the diameter of the driving gear 43 is twice that of the driven gear 44, the driving motor 42 drives the driving gear 43 to rotate one circle, and the driven gear 44 rotates two circles, so that the rotation speed of the driven roller 55 is twice that of the driving roller 51, and the rotation speed of the right track 52 is twice that of the left track 52. Therefore, the two tracks 52 have different rotation speeds during transmission, thereby performing relative displacement crushing and extrusion on the vegetables, fruits and melons passing between the two tracks, so that the vegetables, fruits and melons are fully crushed in the process of downward transmission, which facilitates the subsequent extrusion processing of the vegetables, fruits and melons.

[0039] As an embodiment of the present invention, Figure 2 , Figure 3 , Figure 6 and Figure 7As shown, a socket 8 is provided on the left side wall of the crushing box 2 below the extrusion mechanism 6, and a sealing gasket 81 is fixedly connected to the inner wall of the socket 8, a filter frame 82 is inserted in the socket 8, and the filter frame 82 is a rectangular frame structure that penetrates from top to bottom, a primary filter screen plate 83 is provided at the upper end of the inner side of the filter frame 82, and a secondary filter screen plate 84 is provided at the lower end, the aperture of the primary filter screen plate 83 is larger than the aperture of the secondary filter screen plate 84, and cylindrical holes 831 are equidistantly provided on the outer side surfaces of the plate frame on the left and right sides of the primary filter screen plate 83, a spring 832 is fixedly connected to the inner bottom of the cylindrical hole 831, and the outer end of the spring 832 is fixedly connected to a limit pin 833, pin grooves 834 matching the limit pin 833 are provided on the left and right side surfaces inside the filter frame 82, and a pull handle 85 is fixedly connected to the center position of the left side surface of the filter frame 82.

[0040] During operation, based on the above embodiment, the vegetables, fruits and melons that have been sprayed, washed, crushed and squeezed fall onto the primary filter screen 83 inside the filter frame 82. The primary filter screen 83 can filter out the roots, stems, shells and seed cores of the vegetables, fruits and melons, and then pass through the secondary filter screen 84. The secondary filter screen 84 can filter out small-sized impurities such as mud and sand contained in the vegetables, fruits and melons, so as to avoid interference with subsequent pesticide residue detection and damage to the detection instrument. The filter frame 82 can be pulled out of the socket 8 below the crushing box 2 through the pull handle 85, and the primary filter screen 83 and the secondary filter screen 84 are pushed hard, and the limit pin 833 is compressed into the cylindrical hole 831, so as to facilitate the removal of the primary filter screen 83 and the secondary filter screen 84 from the filter frame 82 for cleaning, so as to avoid the primary filter screen 83 and the secondary filter screen 84 being blocked after long-term use.

[0041] As an embodiment of the present invention, Figure 1 and Figure 2 As shown, a support platform 9 is arranged below the crushing box 2, and the lower end of the crushing box 2 is fixedly connected to the upper end surface of the support platform 9 through a support leg 21. The lower end box body of the crushing box 2 is a quadrangular pyramid structure, and the lower end box body of the crushing box 2 with a quadrangular pyramid structure is connected to a discharge pipe 22.

[0042] During operation, based on the above embodiment, the crushing box 2 is fixed to the support platform 9 by the support legs 21 to prevent the vibration force generated by the driving mechanism 4 and the water pump 31 during operation from causing the crushing box 2 to shake. The lower end of the crushing box 2 with a quadrangular pyramid structure facilitates the juice of vegetables and fruits to flow out of the crushing box 2 to the greatest extent without accumulating at the bottom of the crushing box 2, thereby improving the degree of pesticide extraction.

[0043] As an embodiment of the present invention, Figure 2As shown, the discharge pipe 22 passes through the through hole at the center position of the upper end surface of the support platform 9 and is connected with the upper end surface of the receiving box 11 below the support platform 9, and a conical baffle 111 is fixedly connected to the center position inside the receiving box 11, and a discharge pipe 113 is connected to the center position of the lower end of the right side surface of the receiving box 11, and a valve 112 is provided on the discharge pipe 113.

[0044] During operation, based on the above embodiment, the juice of vegetables, fruits and melons is collected through the receiving box 11, and the setting of the conical baffle 111 prevents the juice from flowing directly downward and causing a large impact on the subsequent detection equipment and damaging the detection equipment. After the detection is completed, the juice can be discharged from the receiving box 11 through the discharge pipe 113 by opening the valve 112.

[0045] As an embodiment of the present invention, Figure 2 As shown, a pesticide residue detector 10 is arranged below the receiving box 11, and three detection rods 101 equidistantly fixedly connected at the center position of the upper end surface of the pesticide residue detector 10 respectively pass through the corresponding through holes on the lower end surface of the receiving box 11 to below the conical baffle 111, and the liquid level meter 102 on the left side of the upper end surface of the pesticide residue detector 10 passes through the corresponding through holes on the left side of the lower end surface of the receiving box 11 to the inside of the receiving box 11.

[0046] During operation, based on the above embodiment, after the juice of vegetables and fruits that have been sprayed, rinsed, crushed, squeezed and filtered enters the receiving box 11, the water pump 31 is turned on again to supply water to the inside of the crushing box 2, and the crushing mechanism 5, the squeezing mechanism 6, the primary filter plate 83 and the secondary filter plate 84 are cleaned once to improve the extraction degree of pesticides in vegetables and fruits. Then, the pesticide residue detector 10 is started to perform pesticide residue detection, thereby improving the accuracy of detection. The setting of the conical baffle 111 can prevent the direct juice from causing a large impact on the detection rod 101 and causing damage to the detection rod 101. The liquid level meter 102 is used to measure the volume of the juice in the receiving box 11, and the pesticide residue detector 10 uses the percentage of the detected pesticide components and the juice volume to determine whether the pesticide residue exceeds the standard, which is then displayed on the display screen of the pesticide residue detector 10.

[0047] Working principle: put the vegetables and fruits to be tested from the feed hopper 1 between the two crawler belts 52 of the crushing mechanism 5, then start the driving motor 42 of the driving mechanism 4, drive the driving gear 43 to rotate, thereby drive the driven gear 44 to rotate, the driving gear 43 drives the driving roller 51 to rotate, thereby drives the first-level synchronous roller 56 to rotate, and then drives the left crawler belt 52 to rotate clockwise, the driven gear 44 simultaneously drives the driven roller 55 to rotate, thereby drives the second-level synchronous roller 57 to rotate, and then drives the right crawler belt 52 to rotate counterclockwise, so that the vegetables and fruits are conveyed downward, because the two crawler belts 52 are fixedly connected with the crushing teeth 53 of the conical structure, and the two crawler belts 52 are placed in a V shape, so that the vegetables and fruits are subjected to the crushing force in the process of conveying. As the diameter of the driving gear 43 is twice that of the driven gear 44, the driving motor 42 drives the driving gear 43 to rotate one circle, and the driven gear 44 rotates two circles, so that the speed of the driven roller 55 is twice that of the driving roller 51, and the speed of the right crawler 52 is twice that of the left crawler 52, so that the two crawler belts 52 are misaligned during transmission, so that the vegetables and fruits are fully crushed in the process of being conveyed downward, and the clean water in the water tank 3 is conveyed to the nozzles 35 inside the branch pipe 34 through the water pipe 32 and the three-way joint 33 by the water pump 31, and the vegetables and fruits in the crushing process are sprayed and washed by the nozzles 35, so that the pesticides on the surface of the vegetables and fruits are washed out, and the vegetables and fruits are crushed. The crushed vegetables, fruits and melons are restricted above the main pressing roller 61 and the auxiliary pressing roller 62 under the action of the guide plate 7. The primary synchronous roller 56 drives the active pulley 614 to rotate, thereby driving the driven pulley 612 to rotate, and then driving the main pressing roller 61 to rotate. Similarly, the auxiliary pressing roller 62 rotates under the drive of the secondary synchronous roller 57, so that the crushed vegetables, fruits and melons are squeezed by the main pressing roller 61 and the auxiliary pressing roller 62 to squeeze out the residual pesticides inside the vegetables, fruits and melons, thereby improving the degree of pesticide extraction. After being sprayed, washed, crushed and squeezed, the vegetables, fruits and melons fall onto the primary filter screen 83 inside the filter frame 82. The primary filter screen 83 can filter out the roots, stems, shells and seeds of vegetables, fruits and melons, and then pass through the secondary filter screen 84. The secondary filter screen 84 can filter out small-sized impurities such as mud and sand contained in vegetables, fruits and melons, so as to avoid interference with subsequent pesticide residue detection and damage to the detection instrument. The filter frame 82 can be pulled out of the socket 8 below the crushing box 2 by the pull handle 85, and the primary filter screen 83 and the secondary filter screen 84 are pushed hard, and the limit pin 833 is compressed into the cylindrical hole 831, so that the primary filter screen 83 and the secondary filter screen 84 can be easily removed from the filter frame 82 for cleaning, so as to avoid the primary filter screen 83 and the secondary filter screen 84 being blocked after long-term use. The crushing box 2 is fixed to the support platform 9 by the support legs 21 to prevent the vibration force generated by the driving mechanism 4 and the water pump 31 during the working process from causing the crushing box 2 to shake.The lower end of the crushing box 2 with a four-sided pyramid structure facilitates the juice of vegetables and fruits to flow out of the crushing box 2 to the maximum extent without accumulating at the bottom of the crushing box 2, thereby improving the degree of pesticide extraction. After the juice of vegetables and fruits enters the receiving box 11 after spraying, washing, crushing, squeezing and filtering, the water pump 31 is turned on again to supply water to the crushing box 2, and the crushing mechanism 5, squeezing mechanism 6, primary filter screen 83 and secondary filter screen 84 are cleaned once, thereby improving the degree of pesticide extraction in vegetables and fruits. The pesticide residue detector 10 is started to perform pesticide residue detection, thereby improving the accuracy of detection. The setting of the conical baffle 111 can prevent the juice flowing straight down from causing a large impact on the detection rod 101 and causing damage to the detection rod 101. The liquid level meter 102 is used to measure the volume of the juice in the receiving box 11, and the percentage of the detected pesticide components and the juice volume by the pesticide residue detector 10 is used to judge whether the pesticide residue exceeds the standard, and then it is displayed on the display screen of the pesticide residue detector 10.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pesticide residue detection device, comprising a crushing box (2), characterized in that: The crushing box (2) is in a vertical rectangular cavity structure, and a feed hopper (1) is fixedly connected to the center of the upper end surface of the crushing box (2); a water tank (3) is arranged at the front side below the crushing box (2), and a water pump (31) is fixedly connected to the inner bottom surface of the water tank (3); the output end of the water pump (31) is fixedly connected to a water pipe (32), and the upper end of the water pipe (32) is fixedly connected to a three-way joint (33), and the left and right ends of the three-way joint (33) are connected to branch pipes (34), and the inner sides of the branch pipes (34) are respectively connected to four nozzles (35) at equal distances, and the nozzles (35) are respectively located at the upper ends of the left and right side walls inside the crushing box (2); a crushing mechanism (5) is arranged inside the crushing box (2), and a driving mechanism (4) is arranged at the upper end of the rear side of the crushing box (2); The crushing mechanism (5) comprises a driving roller (51), a crawler belt (52), crushing teeth (53), a roller (54), a driven roller (55), a primary synchronous roller (56) and a secondary synchronous roller (57), wherein the rollers (54) at the front and rear ends of the driving roller (51) and the primary synchronous roller (56) are respectively movably connected to the bearings in the shaft holes on the front and rear side walls of the crushing box (2), and the driving roller (51) and the primary synchronous roller (56) are connected via the crawler belt (52), and the driven roller (55) and the secondary synchronous roller (57) are respectively movably connected to the bearings in the shaft holes on the front and rear side walls of the crushing box (2). The rollers (54) of the drum (57) are respectively movably connected to the bearings in the shaft holes on the front and rear side walls of the crushing box (2), and the driven roller (55) and the secondary synchronous roller (57) are connected by a crawler (52), and the outer surface of the crawler (52) is evenly and fixedly connected with crushing teeth (53) of a conical structure, and the two crawlers (52) are placed in a V shape. The lower parts of the primary synchronous roller (56) and the secondary synchronous roller (57) are relatively inclined and provided with guide plates (7), and the upper ends of the guide plates (7) are fixed to the inner wall of the crushing box (2); The driving mechanism (4) comprises a motor fixing seat (41), a driving motor (42), a driving gear (43) and a driven gear (44); the motor fixing seat (41) is fixedly connected to the upper left position of the rear side wall of the crushing box (2), and the driving motor (42) is fixedly connected to the upper end surface of the motor fixing seat (41); the output shaft of the driving motor (42) is fixedly connected to the center position of the rear side surface of the driving gear (43), and the center position of the front side surface of the driving gear (43) is fixedly connected to the roller (54) on the rear side of the driving roller (51); the driven gear (44) is meshed with the driving gear (43), and the center position of the front side surface of the driven gear (44) is fixedly connected to the roller (54) on the rear side of the driven roller (55); A squeezing mechanism (6) is arranged below the driving mechanism (4), and the squeezing mechanism (6) is composed of a main squeezing roller (61) and an auxiliary squeezing roller (62), the main squeezing roller (61) comprising a roller shaft (611), a driving pulley (612), a belt (613), a driven pulley (614) and a protective shell (63), the front and rear sides of the main squeezing roller (61) are fixedly connected to the roller shaft (611), and the outer end of the front roller shaft (611) is fixedly connected to the driving pulley (612), the first-stage synchronous The outer end of the roller shaft (54) on the front side of the drum (56) is fixedly connected to a driven pulley (614), and the driving pulley (612) and the driven pulley (614) are connected via a belt (613), the auxiliary pressure roller (62) and the main pressure roller (61) have the same connection structure, and the auxiliary pressure roller (62) and the main pressure roller (61) are in contact with each other, and a protective shell (63) is provided on the outer side of the roller shaft (611), the driving pulley (612), the belt (613) and the driven pulley (614); The diameter of the driving gear (43) is twice that of the driven gear (44); A socket (8) is provided on the left wall of the crushing box (2) below the extrusion mechanism (6), and a sealing gasket (81) is fixedly connected to the inner wall of the socket (8). A filter frame (82) is inserted into the socket (8), and the filter frame (82) is a rectangular frame structure that penetrates from top to bottom. A primary filter screen plate (83) is provided at the upper end of the inner side of the filter frame (82), and a secondary filter screen plate (84) is provided at the lower end. The aperture of the primary filter screen plate (83) is larger than that of the secondary filter screen plate (84). The aperture of the filter frame (84) is large, and cylindrical holes (831) are equidistantly provided on the outer side surfaces of the left and right sides of the first-stage filter screen plate (83), a spring (832) is fixedly connected to the inner bottom of the cylindrical hole (831), and a limit pin (833) is fixedly connected to the outer end of the spring (832), and pin grooves (834) matching the limit pin (833) are provided on the left and right side surfaces inside the filter frame (82), and a pull handle (85) is fixedly connected to the center position of the left side surface of the filter frame (82); A support platform (9) is arranged below the crushing box (2), and the lower end of the crushing box (2) is fixedly connected to the upper end surface of the support platform (9) through a support leg (21); the lower end box body of the crushing box (2) is in a quadrangular pyramid structure, and the lower end box body of the crushing box (2) in the quadrangular pyramid structure is connected to a discharge pipe (22); The discharge pipe (22) passes through a through hole at the center position of the upper end surface of the support platform (9) and is connected to the upper end surface of the receiving box (11) below the support platform (9), and a conical baffle (111) is fixedly connected to the center position of the inside of the receiving box (11), and a discharge pipe (113) is connected to the center position of the lower end of the right side surface of the receiving box (11), and a valve (112) is provided on the discharge pipe (113); A pesticide residue detector (10) is arranged below the material receiving box (11), and three detection rods (101) equidistantly fixedly connected to the center of the upper end surface of the pesticide residue detector (10) respectively pass through corresponding holes on the lower end surface of the material receiving box (11) to below the conical baffle (111), and a liquid level gauge (102) on the left side of the upper end surface of the pesticide residue detector (10) passes through corresponding holes on the left side of the lower end surface of the material receiving box (11) to enter the material receiving box (11); The vegetables, fruits and melons to be inspected are put into the two crawler belts (52) of the crushing mechanism (5) from the feeding hopper (1), and then the driving motor (42) of the driving mechanism (4) is started to drive the driving gear (43) to rotate, thereby driving the driven gear (44) to rotate, the driving gear (43) drives the driving roller (51) to rotate, thereby driving the primary synchronous roller (56) to rotate, and then driving the left crawler belt (52) to rotate clockwise, and the driven gear (44) simultaneously drives the driven roller (55) to rotate, thereby driving the secondary synchronous roller (57) to rotate, thereby driving the right crawler belt (52) to rotate clockwise. The crawler belt (52) rotates counterclockwise, so that the vegetables and fruits are conveyed downward. Since the crushing teeth (53) with a conical structure are fixedly connected to the two crawler belts (52), and the two crawler belts (52) are placed in a V shape, the crushing force and the squeezing force on the vegetables and fruits during the conveying process are getting stronger and stronger. Since the diameter of the driving gear (43) is twice that of the driven gear (44), the driving motor (42) drives the driving gear (43) to rotate one circle, and the driven gear (44) rotates two circles, so that the speed of the driven roller (55) is twice that of the driving roller. The rotation speed of the right crawler (52) is twice that of the left crawler (52), so that the two crawlers (52) are misaligned during transmission, and the vegetables, fruits and melons are fully crushed in the process of being conveyed downward. The clean water in the water tank (3) is conveyed by the water pump (31) through the water pipe (32) and the three-way joint (33) to the spray heads (35) inside the branch pipe 34, and the spray heads (35) are used to spray and wash the vegetables, fruits and melons in the crushing process, so that the pesticides on the surface of the vegetables, fruits and melons are washed away. Under the action of the guide plate (7), the crushed vegetables, fruits and melons are restricted above the main pressing roller (61) and the auxiliary pressing roller (62), and the primary synchronous roller (56) drives the driving pulley (612) to rotate, thereby driving the driven pulley (614) to rotate, and then drives the main pressing roller (61) to rotate. Similarly, the auxiliary pressing roller (62) rotates under the drive of the secondary synchronous roller (57), so that the crushed vegetables, fruits and melons are squeezed by the main pressing roller (61) and the auxiliary pressing roller (62), and the residual pesticides inside the vegetables, fruits and melons are squeezed out, thereby improving the degree of pesticide extraction.

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