Pesticide residue detection equipment based on food safety

Abstract

The invention relates to the technical field of pesticide residue detection, in particular to pesticide residue detection equipment based on food safety. Comprising a support frame; the placing table is fixedly connected to the supporting frame, and the bottom of the placing table is slidably connected with a sampling barrel; the power module is arranged on the supporting frame and is used for driving the sampling barrel to rotate and move up and down; the auger is fixedly connected to the interior of the sampling barrel; the plurality of reaming plates are fixedly connected to the outer wall of the sampling barrel; and the rotary cutting assembly is arranged in the sampling barrel and used for cutting fruit peels and pulp of the fruits. A sampling channel with the radius larger than that of the sampling barrel is rotationally cut out for fruits through the reaming plate, useless pulp is smashed and guided into the containing table along the sampling channel, then the sampling barrel samples the pulp at the specific depth into the sampling barrel, the pulp at the other positions is prevented from being mixed with the pulp at the sampling position, and the sampling efficiency is improved. Therefore, the detection data of the pesticide residues in the watermelon pulp is inaccurate.

Description

Technical Field

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

[0002] Fruit and vegetable pesticide residue detection refers to the analysis of pesticide residues in fruits and vegetables to ensure that they meet food safety standards. It is crucial to protect consumer health, meet legal and regulatory requirements, and maintain market reputation. When testing for pesticide residues in watermelon, a fruit that is mainly edible for its flesh, it is necessary to sample the watermelon flesh at a specific depth or the center. There are two existing methods for sampling watermelon flesh. The first method is to cut the watermelon into several pieces and then sample the watermelon flesh. The second method is to pierce the watermelon and directly sample the watermelon flesh. Whether it is cutting or piercing, these tools will successively contact the flesh at different positions during the sampling process, thereby causing the juice at different positions of the fruit and vegetables to adhere to the tool. Then, when sampling the flesh at the sampling position, the juice at other positions attached to the tool will be mixed with the flesh at the sampling position, which will make the final pesticide residue detection result inaccurate. Summary of the invention

[0003] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides a pesticide residue detection device based on food safety.

[0004] The technical solution of the present invention is: a pesticide residue detection device based on food safety, comprising: a support frame; a placement table, fixedly connected to the support frame, and a sampling barrel is slidably connected to the bottom of the placement table; a power module, arranged on the support frame, used to drive the sampling barrel to rotate and move up and down; an auger, fixedly connected to the inside of the sampling barrel, used to rotate and extract raw materials; a plurality of expansion plates, all fixedly connected to the outer wall of the sampling barrel, used to expand the sampling channel; a rotary cutting component, arranged in the sampling barrel, used to cut the peel and pulp of the fruit; a blocking component, arranged in the sampling barrel, used to prevent the pulp and juice from entering the sampling barrel prematurely; a fixing component, arranged on the support frame, used to fix the fruit.

[0005] As a preferred technical solution of the present invention, the expansion plate is a right-angle trapezoidal plate, the lower bottom of the expansion plate is in contact with the sampling tube, and the thickness of the expansion plate gradually decreases from the top to the bottom.

[0006] As a preferred technical solution of the present invention, the rotary cutting assembly includes: a plurality of rotating shafts, all of which are rotatably connected to the interior of the sampling barrel; a number of rotating blocks, which are the same as the number of the rotating shafts and are respectively fixedly connected to the top ends of adjacent rotating shafts; and a driving assembly, which is arranged on the sampling barrel and is used to drive all the rotating shafts to rotate.

[0007] As a preferred technical solution of the present invention, the driving assembly includes: a rotation module, which is arranged on the sampling tube, and the sampling tube is rotatably connected to a transmission gear ring, and the rotation module is used to drive the transmission gear ring to rotate; transmission gears, the number of which is the same as the rotating shaft, all of the transmission gears are respectively fixedly connected to the bottom of adjacent rotating shafts, and all of the transmission gears are meshed with the transmission gear ring.

[0008] As a preferred technical solution of the present invention, the blocking assembly includes: a ventilation pipe, slidably connected in the auger; a retracting frame, arranged on the ventilation pipe; an airbag, fixedly connected to the retracting frame, the ventilation pipe is connected to the airbag, and the airbag is used to block the sampling barrel; a transmission assembly, arranged on the sampling barrel, used to drive the ventilation pipe to slide along the auger.

[0009] As a preferred technical solution of the present invention, the transmission assembly includes: a rotating sleeve, rotatably connected to the sampling tube, the outside of the rotating sleeve is fixedly connected to a driving gear, and all the transmission gears are engaged with the driving gear; a first clamping block, fixedly connected to the ventilation pipe, the interior of the rotating sleeve is provided with a first inclined groove, and the first clamping block is located in the first inclined groove.

[0010] As a preferred technical solution of the present invention, the fixing component includes: a threaded shaft, rotatably connected to the placing table; a clamping ring, slidably connected to the placing table, and the clamping ring is threadedly connected to the threaded shaft; a detection component, arranged on the placing table, for detecting the height of the fruit.

[0011] As a preferred technical solution of the present invention, the detection component includes: a pressure sensor fixedly connected to the placement table; and an elastic element disposed between the pressure sensor and the clamping ring.

[0012] As a preferred technical solution of the present invention, it also includes: a partition assembly, which is arranged inside the sampling barrel and is used to isolate all the rotating material blocks. The partition assembly includes: a cutting ring, which is slidably connected in the sampling barrel; second clamping blocks, the same number as the rotating shaft, are fixedly connected to the cutting ring, the rotating shaft is provided with a second inclined groove, and all the second clamping blocks are respectively located in adjacent second inclined grooves.

[0013] As a preferred technical solution of the present invention, the height of the cutting ring is greater than the height of the second inclined groove, so that the cutting ring can block all the rotating shafts.

[0014] Beneficial effects: 1. The present invention uses an expansion plate to cut a sampling channel larger than the radius of the sampling tube for the watermelon, breaks up useless pulp, and guides it along the sampling channel to the placement table. Then the sampling tube samples the pulp at a specific depth into the interior, avoiding the mixing of pulp at other positions with the pulp at the sampling position, resulting in inaccurate pesticide residue detection data of the watermelon pulp.

[0015] 2. When the airbag seals the sampling tube, all the rotating material blocks are attached to the upper side of the airbag and the pulp attached to it is scraped off to prevent the pulp attached to the airbag from entering the sampling tube and forming a mixture, thereby reducing the accuracy of the pesticide residue detection data of the watermelon pulp.

[0016] 3. The edges of the shrunk airbag are driven to gather toward the center through the gathering frame, the upper side of the airbag is blocked, and the gathered airbag is gathered into the auger to prevent the residual juice on the upper side of the airbag from mixing with the subsequent pulp sampling, resulting in inaccurate pesticide residue detection data of the pulp.

[0017] 4. Through the cooperation of the clamping ring and the pressure sensor, the fixed height of the watermelon to be sampled is detected, and the center position of the watermelon is automatically determined, which is convenient for the sampling tube to sample the pulp at the center of the watermelon and detect pesticide residues.

[0018] 5. By making the cutting ring protrude from the sampling tube, the pulp to be sampled is separated from the rotary block to avoid contact between the pulp to be sampled and the rotary block, causing the residual pulp and juice on the rotary block to mix with the pulp to be tested, affecting the accuracy of the pesticide residue detection data. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the placement table of the present invention; Figure 3 It is a schematic cross-sectional view of the three-dimensional structure of the sampling tube of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the ventilation pipe of the present invention; Figure 5 It is a schematic cross-sectional view of the three-dimensional structure of the auger of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the transmission gear ring of the present invention; Figure 7 It is a schematic cross-sectional view of the three-dimensional structure of the rotating sleeve of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the cutting ring of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the second clamping block and the second inclined groove of the present invention.

[0020] Marked in the figure: 1-support frame, 2-placing table, 3-sampling tube, 4-power module, 5-auger, 6-expansion plate, 201-rotating shaft, 202-rotating block, 203-rotating module, 204-transmission gear ring, 205-transmission gear, 301-ventilation pipe, 302-folding frame, 303-air bag, 304-rotating sleeve, 305-driving gear, 306-first clamping block, 307-first inclined groove, 401-threaded shaft, 402-clamping ring, 403-pressure sensor, 404-elastic element, 501-cutting ring, 502-second clamping block, 503-second inclined groove. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiment is only one of the better specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention without making any creative work should be covered within the protection scope of the present invention.

[0022] There are two common sampling methods in the process of watermelon pulp sampling: one is to cut the watermelon into multiple pieces first and then select the pulp sample from them; the other is to use a puncture tool to obtain the pulp sample directly from the whole watermelon. However, in the sampling process, whether it is cutting or puncturing, these tools will contact the pulp in different positions successively. Since the tools contact the pulp in multiple positions, it will be mixed with the pulp in the target sampling position. This situation will make the final pesticide residue detection results inaccurate.

[0023] A pesticide residue detection device based on food safety, such as Figure 1-Figure 5 As shown, it includes: a support frame 1; a placing table 2, which is fixedly connected to the supporting frame 1, and a sampling tube 3 is slidably connected to the bottom of the placing table 2; a power module 4, which is arranged on the supporting frame 1 and is used to drive the sampling tube 3 to rotate and move up and down; a screw 5, which is fixedly connected to the inside of the sampling tube 3 and is used to rotate and extract raw materials; a plurality of expanding plates 6, which are all fixedly connected to the outer wall of the sampling tube 3 and are used to expand the sampling channel; a rotary cutting component, which is arranged in the sampling tube 3 and is used to cut the peel and pulp of the fruit; a blocking component, which is arranged in the sampling tube 3 and is used to prevent the pulp and juice from entering the sampling tube 3 in advance; a fixing component, which is arranged on the supporting frame 1 and is used to fix the fruit; the expanding plate 6 is a right-angled trapezoidal plate, the lower bottom of the expanding plate 6 is in contact with the sampling tube 3, and the thickness of the expanding plate 6 gradually decreases from the top to the bottom, so that the peel can fall downward.

[0024] In the above scheme, a control terminal is arranged on the support frame 1, and a ring-shaped rubber sleeve (not shown in the figure) is arranged on the top of the placement table 2 for stably placing the watermelon and preventing damage to the skin of the watermelon. The power module 4 is composed of two left and right servo motors, a lead screw, a spline shaft, a sliding member, two pulleys and a belt. The two servo motors are electrically connected to the control terminal. The servo motor on the left side drives the sampling barrel 3 to move up and down through the lead screw fixedly connected to the output shaft and the sliding member threadedly connected to the lead screw. The output shaft of the servo motor on the right side is fixedly connected to a spline shaft, and the sliding member is rotationally connected to the two pulleys. The sampling barrel 3 is fixedly connected to the pulley on the left side, and the skin on the right side is fixedly connected to the pulley on the left side. The pulley is spline-connected to the spline shaft, and the belt is wound between the two pulleys to drive the sampling barrel 3 to rotate alternately, so that the sampling barrel 3 moves up and down and rotates at the same time to complete the rotary cutting of the watermelon peel and pulp. The reaming plate 6 is located on the outer wall of the top of the sampling barrel 3, and a number of reaming plates 6 are distributed in a ring-shaped and equidistant manner on the outer wall of the sampling barrel 3. The reaming plate 6 is used to rotary cut a sampling channel larger than the radius of the sampling barrel 3 for the watermelon, and useless pulp is broken up and guided along the sampling channel to the placement table 2. Then the sampling barrel 3 samples the pulp at a specific depth into the interior to avoid the pulp at other positions from mixing with the pulp at the sampling position, resulting in inaccurate pesticide residue detection data of the watermelon pulp.

[0025] Specifically, Figure 3-Figure 5 As shown, the peeling assembly includes: a plurality of rotating shafts 201, all of which are rotatably connected to the interior of the sampling barrel 3; a number of rotating blocks 202, which are the same as the number of the rotating shafts 201 and are respectively fixedly connected to the top ends of adjacent rotating shafts 201; and a driving assembly, which is arranged on the sampling barrel 3 and is used to drive all the rotating shafts 201 to rotate.

[0026] In the above scheme, the number of rotating shafts 201 can be freely set according to actual conditions. The rotating block 202 is composed of an arc block and a conical block, and the curvature of the arc block is the same as the curvature of the edge of the sampling tube 3, which is used to deflect the rotating block 202 to the edge of the sampling tube 3 to reduce the contact probability between the rotating block 202 and the part of the pulp to be sampled. The rotating block 202 is polished, has a smooth surface, is not easily contaminated with impurities, and is easy to clean.

[0027] Specifically, Figure 3-Figure 5 As shown, the driving assembly includes: a rotating module 203, which is arranged on the sampling tube 3, and the sampling tube 3 is rotatably connected to a transmission gear ring 204, and the rotating module 203 is used to drive the transmission gear ring 204 to rotate; the transmission gears 205 are the same in number as the rotating shaft 201, and all the transmission gears 205 are respectively fixedly connected to the bottom of the adjacent rotating shaft 201, and all the transmission gears 205 are meshed with the transmission gear ring 204.

[0028] In the above scheme, the rotating module 203 is located at the bottom of the sampling tube 3, so that the sampling tube 3 has a sufficient sampling depth. The rotating module 203 is composed of a driving motor and a spur gear on the output shaft, and the spur gear is meshed with a transmission gear ring 204. The outside of the transmission gear ring 204 and the transmission gear 205 are coated with an anti-rust coating, such as chrome, to extend the service life. The transmission gear ring 204 is used to drive all the rotating shafts 201 to rotate in the same direction through all the transmission gears 205 to avoid the rotation block 202 from rotating in the opposite direction and getting stuck.

[0029] Specifically, Figure 3-Figure 5 As shown, the blocking component includes: a ventilation pipe 301, which is slidably connected to the auger 5; a retracting frame 302, which is fixedly connected to the ventilation pipe 301; an air bag 303, which is fixedly connected to the retracting frame 302, and the ventilation pipe 301 is connected to the air bag 303, and the air bag 303 is used to block the sampling tube 3; a transmission component, which is arranged on the sampling tube 3, and is used to drive the ventilation pipe 301 to slide along the auger 5.

[0030] In the above scheme, the ventilation tube 301 is connected to the external gas injection device, and the external gas injection device is electrically connected to the control terminal, which is used to control the expansion degree of the airbag 303. The folding frame 302 is similar to the ribs of an umbrella, which is used to fold the shrunk airbag 303. The folding frame 302 is located at the top of the ventilation tube 301, and the upper side of the airbag 303 in the expanded state is in contact with the lower side of all the rotating blocks 202. The sampling tube 3 is blocked by the airbag 303 to prevent the peel and pulp produced during rotary cutting from entering the sampling tube 3 to form a mixture, thereby reducing the accuracy of the detection of pesticide residues in the pulp.

[0031] Specifically, Figure 4 and Figure 7 As shown, the transmission assembly includes: a rotating sleeve 304, which is rotatably connected to the sampling tube 3, and the outside of the rotating sleeve 304 is fixedly connected to a driving gear 305, and all the transmission gears 205 are engaged with the driving gear 305; a first clamping block 306, which is fixedly connected to the ventilation pipe 301, and the interior of the rotating sleeve 304 is provided with a first inclined groove 307, and the first clamping block 306 is located in the first inclined groove 307.

[0032] In the above scheme, the rotating sleeve 304 is located at the bottom of the sampling barrel 3, the outside of the driving gear 305 is provided with a rust-proof coating, such as a chrome coating, to extend its service life, the outside of the first clamping block 306 is provided with a wear-resistant coating, such as a nickel coating, to reduce its friction loss, and the first inclined groove 307 is composed of an annular groove and an inclined slide groove. The annular groove of the first inclined groove 307 is used to allow a number of rotating blocks 202 to fit the control airbag 303 to scrape off the pulp attached thereto, so as to prevent the pulp from entering the sampling barrel 3 when the airbag 303 contracts. The inclined slide groove of the first inclined groove 307 is used to allow the ventilation tube 301 to drive the airbag 303 to gather after contraction and enter the interior of the auger 5.

[0033] Specifically, Figure 2 As shown, the fixing assembly includes: a threaded shaft 401, which is rotatably connected to the placing table 2; a clamping ring 402, which is slidably connected to the placing table 2, and the clamping ring 402 is threadedly connected to the threaded shaft 401; and a detection assembly, which is arranged on the placing table 2 and is used to detect the height of the fruit.

[0034] In the above scheme, the threaded shaft 401 is located on the upper side of the placement table 2, and the outside of the threaded shaft 401 is provided with an anti-rust coating to prevent rust caused by sticking to the juice. An annular rubber sleeve (not shown in the figure) is provided at the center of the clamping ring 402 to stably clamp the watermelon and prevent damage to the skin of the watermelon.

[0035] Specifically, Figure 2 As shown, the detection assembly includes: a pressure sensor 403 fixedly connected to the placement table 2; and an elastic element 404 disposed between the pressure sensor 403 and the clamping ring 402.

[0036] In the above scheme, the pressure sensor 403 is electrically connected to the control terminal, and the elastic element 404 is a spring. The elastic element 404 is used to apply pressure to the pressure sensor 403, thereby determining the height of the watermelon, making it easier for the sampling tube 3 to accurately sample the flesh at the center of the watermelon.

[0037] When the staff needs to sample the flesh of the watermelon, the staff places the watermelon vertically or horizontally on the placing table 2, and then rotates the threaded shaft 401 so that the threaded shaft 401 drives the clamping ring 402 to slide downward along the placing table 2 until the clamping ring 402 contacts the top of the watermelon, and then stops rotating the threaded shaft 401. At the same time, when the clamping ring 402 slides downward along the placing table 2, the clamping ring 402 compresses the elastic element 404, so that the compression of the elastic element 404 exerts a force on the pressure sensor 403. After the pressure sensor 403 receives the pressure of the elastic element 404, the pressure value is transmitted to the control terminal. The control terminal can determine the height of the watermelon according to the pressure value felt by the pressure sensor 403. The higher the pressure value felt by the pressure sensor 403, the lower the height of the watermelon, which is convenient for the sampling tube 3 to accurately locate the center of the watermelon and improve the sampling accuracy of the sampling tube 3.

[0038] When the watermelon is fixed, the staff can freely set the sampling depth or sample the flesh at the center of the watermelon through the control terminal. When sampling begins, the two servo motors are turned on, and the sampling barrels 3 are driven to rotate alternately by the two servo motors. At the same time, the sampling barrels 3 begin to move upward along the placement table 2 (the specific transmission relationship is not described in detail here). The rotation of the sampling barrel 3 drives all the rotating shafts 201 thereon to rotate synchronously, and the rotating shaft 201 drives the top rotary block 202 to rotate synchronously. When the sampling barrel 3 drives several rotary blocks 202 to contact the outer skin of the watermelon, all the rotary blocks 202 begin to open the outer skin and flesh of the watermelon. The peeling starts, and the chopped skin and pulp fall into the placement table 2 due to gravity, and this continues until the sampling tube 3 reaches the sampling position. At this time, the two servo motors are turned off, and the upward movement of the sampling tube 3 is stopped. When the sampling tube 3 drives all the rotary blocks 202 to peel the watermelon, the sampling tube 3 drives the external reaming plate 6 to rotate synchronously, so that all the reaming plates 6 in the annular array expand the sampling channel of the rotary block 202 for peeling, leaving a gap between the watermelon pulp and the outer wall of the sampling tube 3, so that the peeled pulp can fall into the placement table 2 along the gap, and at the same time, the reaming plate 6 is inclined, which has the effect of guiding the pulp downward.

[0039] When the sampling barrel 3 runs to the required sampling position and stops, part of the peeled pulp will remain between the airbag 303 and the pulp to be sampled above. At this time, the driving motor is turned on to drive the output shaft of the driving motor to rotate the transmission gear ring 204 through the spur gear, so that the transmission gear ring 204 drives all the transmission gears 205 to rotate synchronously, and the transmission gear 205 drives the adjacent rotating shaft 201 to rotate along the sampling barrel 3. The rotating shaft 201 drives the rotating material block 202 on its top to deflect outward, and the pulp remaining on the airbag 303 is scraped off, so that the pulp falls into the placement table 2 along the gap of the sampling channel due to gravity, so as to avoid the pulp on the airbag 303 from falling into the sampling barrel 3 when the airbag 303 is recovered later, and mixing with the pulp sampled later, resulting in inaccurate data of pesticide residue detection. When all the rotating material blocks 202 deflect outward to the edge of the sampling barrel 3, the driving motor is turned off at this time.

[0040] In the process that the output shaft of the driving motor drives all the transmission gears 205 to rotate synchronously through the spur gear, all the transmission gears 205 will drive the driving gear 305 to rotate synchronously, so that the driving gear 305 drives the rotating sleeve 304 to rotate synchronously, and the rotating sleeve 304 drives the first inclined groove 307 inside it to rotate synchronously. At this time, the first clamping block 306 slides along the annular groove of the first inclined groove 307, that is, the airbag 303 maintains its initial position unchanged, so that all the rotating material blocks 202 can scrape the residual pulp on the upper surface of the airbag 303, and so on until the first clamping block 306 slides along the annular groove of the first inclined groove 307 to the inclined groove, at which time all the rotating material blocks 202 are about to rotate to the edge, and then the rotating sleeve 304 Continue to rotate, so that the first block 306 slides downward along the inclined groove of the first inclined groove 307, and the first block 306 drives the ventilation tube 301 to move downward. At the same time, the external gas injection device synchronously draws the gas in the airbag 303 outward along the ventilation tube 301, causing the airbag 303 to gradually shrink until the retracting frame 302 drives the airbag 303 to close completely upward under the squeezing of the auger 5, and is pulled into the auger 5 by the ventilation tube 301, and the upper side of the airbag 303 is retracted to the inside to prevent the juice remaining on the upper side of the airbag 303 from flowing into the sampling tube 3 to form mixing. At this time, the airbag 303 releases the blockage of the sampling tube 3, and at the same time all the rotating blocks 202 rotate to the edge of the sampling tube 3.

[0041] After the airbag 303 releases the blockage on the top of the sampling tube 3, the two servo motors are turned on again to drive the sampling tube 3 to perform rotary cutting on the flesh at the sampling position, and the sampling tube 3 drives the internal auger 5 to move upward synchronously, so that the flesh at the sampling position enters the interior of the sampling tube 3, and at the same time, the sampling tube 3 drives the internal auger 5 to rotate synchronously, and the auger 5 cuts the flesh entering the sampling tube 3, so that the flesh is divided into several sections in the sampling tube 3, so as to avoid the top of the flesh at the sampling position to be sampled from adhering to the flesh body, resulting in the sampling tube 3 being unable to drive the flesh at the sampling position to be sampled to be withdrawn synchronously when withdrawing from the watermelon body, and this is done until the sampling is completed, and then the drive motor is turned on again to make the drive motor The output shaft drives the transmission gear ring 204 to rotate synchronously through the spur gear, and the transmission gear ring 204 drives the rotating shaft 201 to reset and rotate through the transmission gear 205, thereby driving the rotating block 202 to reset and rotate synchronously, and at the same time, the rotating sleeve 304 drives the ventilation tube 301 to reset through the first inclined groove 307 and the first clamping block 306 inside, so that the ventilation tube 301 drives the air bag 303 to extend out of the auger 5 through the retracting frame 302, and at the same time, the external gas injection device injects gas into the air bag 303 through the ventilation tube 301, so that the air bag 303 is reset and the sampling tube 3 is blocked again, so as to prevent the pulp and juice in other positions from falling into the sampling tube 3 and mixing during the resetting of the sampling tube 3.

[0042] When the sampling tube 3 is blocked by the airbag 303, the two servo motors are turned on to drive the sampling tube 3 to reset to the initial state. Then the staff will release the fixation of the watermelon and take the watermelon off. Then the staff will take out the pulp in the sampling tube 3 for pesticide residue detection. When the watermelon pulp needs to be sampled again, the above steps are repeated.

[0043] In a further embodiment, Figure 8 and Fig. 9 As shown, it also includes: a partition component, which is arranged inside the sampling barrel 3 and is used to separate all the rotating blocks 202. The partition component includes: a cutting ring 501, which is slidably connected to the sampling barrel 3; second clamping blocks 502, which are the same in number as the rotating shaft 201, and are all fixedly connected to the cutting ring 501. The rotating shaft 201 is provided with a second inclined groove 503, and all the second clamping blocks 502 are respectively located in adjacent second inclined grooves 503; the height of the cutting ring 501 is greater than the height of the second inclined groove 503, which is used to make the cutting ring 501 block all the rotating shafts 201.

[0044] In the above scheme, an inclined surface (not shown in the figure) is provided on the inner side of the top of the cutting ring 501, so that the cutting ring 501 can enter between the airbag 303 and the sampling tube 3. Initially, the cutting ring 501 is located inside the sampling tube 3 to avoid contact with the pulp at other positions. By making the cutting ring 501 protrude from the sampling tube 3 and be higher than the rotary block 202, the pulp at the sampling position can avoid contact with the rotary block 202 to form mixing, thereby improving the accuracy of pulp detection.

[0045] When all the rotating shafts 201 drive the adjacent rotary blocks 202 to rotate so that the airbag 303 releases the blockage of the sampling tube 3, all the rotating shafts 201 will drive the second inclined grooves 503 thereon to rotate synchronously. The second inclined grooves 503 squeeze the adjacent second clamping blocks 502 so that the second clamping blocks 502 slide upward along the sampling tube 3. At this time, all the second clamping blocks 502 drive the cutting ring 501 to move upward synchronously so that the cutting ring 501 protrudes out of the sampling tube 3, and this is done until the height of the cutting ring 501 is higher than the height of all the rotary blocks 202. When sampling the pulp at a specific depth subsequently, the cutting ring 501 separates the pulp to be sampled from the rotary block 202 to prevent the pulp to be sampled from contacting the rotary block 202, causing the residual pulp and juice on the rotary block 202 to mix with the pulp to be tested, affecting the accuracy of the pesticide residue detection data.

[0046] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pesticide residue detection device based on food safety, characterized in that: Included are: Support frame (1); A placement table (2) is fixedly connected to the support frame (1), and a sampling tube (3) is slidably connected to the bottom of the placement table (2); A power module (4) is arranged on the support frame (1) and is used to drive the sampling tube (3) to rotate and move up and down; An auger (5) is fixedly connected to the interior of the sampling tube (3) and is used to extract the raw material by rotation; A plurality of expansion plates (6) are fixedly connected to the outer wall of the sampling tube (3) and are used to expand the sampling channel; A peeling assembly, arranged in the sampling barrel (3), for cutting the peel and pulp of the fruit; A blocking component, arranged in the sampling barrel (3), and used to prevent pulp and juice from entering the sampling barrel (3) prematurely; A fixing component is arranged on the support frame (1) and is used to fix the fruit.

2. The pesticide residue detection device based on food safety according to claim 1 is characterized in that: The expansion plate (6) is a right-angled trapezoidal plate, the lower bottom of the expansion plate (6) is in contact with the sampling tube (3), and the thickness of the expansion plate (6) gradually decreases from the top to the bottom.

3. The pesticide residue detection device based on food safety according to claim 1 is characterized in that: The rotary cutting assembly comprises: There are a plurality of rotating shafts (201), all of which are rotatably connected to the interior of the sampling cylinder (3); The rotating blocks (202) are the same in number as the rotating shafts (201) and are respectively fixedly connected to the top ends of adjacent rotating shafts (201); A driving assembly is arranged on the sampling cylinder (3) and is used to drive all the rotating shafts (201) to rotate.

4. The pesticide residue detection device based on food safety according to claim 3 is characterized in that: The drive assembly comprises: A rotation module (203) is arranged on the sampling barrel (3); the sampling barrel (3) is rotationally connected to a transmission gear ring (204); the rotation module (203) is used to drive the transmission gear ring (204) to rotate; The number of the transmission gears (205) is the same as the number of the rotating shafts (201); all of the transmission gears (205) are respectively fixedly connected to the bottoms of adjacent rotating shafts (201); and all of the transmission gears (205) are meshed with the transmission gear ring (204).

5. The pesticide residue detection device based on food safety according to claim 4 is characterized in that: The blocking component comprises: A vent pipe (301) is slidably connected to the auger (5); A folding frame (302) is arranged on the ventilation pipe (301); An air bag (303) is fixedly connected to the folding frame (302); the ventilation pipe (301) is in communication with the air bag (303); and the air bag (303) is used to block the sampling tube (3); A transmission assembly is arranged on the sampling cylinder (3) and is used to drive the ventilation pipe (301) to slide along the auger (5).

6. The pesticide residue detection device based on food safety according to claim 5, characterized in that: The transmission assembly comprises: A rotating sleeve (304) is rotatably connected to the sampling tube (3); a driving gear (305) is fixedly connected to the outside of the rotating sleeve (304); and all the transmission gears (205) are meshed with the driving gear (305); The first clamping block (306) is fixedly connected to the ventilation pipe (301), and a first inclined groove (307) is provided inside the rotating sleeve (304), and the first clamping block (306) is located in the first inclined groove (307).

7. The pesticide residue detection device based on food safety according to claim 1 is characterized in that: The fixing assembly comprises: A threaded shaft (401) rotatably connected to the placement platform (2); A clamping ring (402) is slidably connected to the placement table (2), and the clamping ring (402) is threadedly connected to the threaded shaft (401); A detection component is arranged on the placement table (2) and is used to detect the height of the fruit.

8. The pesticide residue detection device based on food safety according to claim 7, characterized in that: The detection component includes: A pressure sensor (403) fixedly connected to the placement platform (2); An elastic element (404) is arranged between the pressure sensor (403) and the clamping ring (402).

9. The pesticide residue detection device based on food safety according to claim 6, characterized in that: Also included are: A partition assembly is arranged inside the sampling tube (3) and is used to separate all the rotating material blocks (202). The partition assembly comprises: A cutting ring (501) is slidably connected inside the sampling tube (3); The second clamping blocks (502) are the same in number as the rotating shaft (201) and are all fixedly connected to the cutting ring (501). The rotating shaft (201) is provided with a second inclined groove (503), and all the second clamping blocks (502) are respectively located in adjacent second inclined grooves (503).

10. The pesticide residue detection device based on food safety according to claim 9, characterized in that: The height of the cutting ring (501) is greater than the height of the second inclined groove (503), and is used to enable the cutting ring (501) to block all the rotating shafts (201).

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