Food pesticide residue microbiological detection device for food detection

Abstract

The invention belongs to the field of detection devices, and particularly relates to a food pesticide residue microbiological detection device for food detection, which comprises a base for supporting other elements; the synchronous detection device is installed at the top of the base and comprises a flow sensor used for flow statistics, one side of the flow sensor is connected with a three-way electromagnetic valve, and at least two conveying pipes are fixedly installed on the three-way electromagnetic valve; the pretreatment assembly is mounted at the top of the base, the pretreatment assembly comprises a rotary table, a rotary disc used for rotating the rotary table is fixed to the bottom of the rotary table, and a solid treatment unit and a powder treatment unit which are used for detecting and pretreating the synchronous detection device are mounted at the top of the rotary table; through cooperation of a flow sensor and a three-way electromagnetic valve in the synchronous detection device, filtrate is synchronously conveyed to a pesticide residue detection cavity and a microorganism detection bin in a split mode, the problem that traditional detection cannot be carried out synchronously is solved, timeliness deviation of samples is avoided, and the precision of detection results and the detection efficiency are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of detection devices, in particular to a food residue microbial detection device for food detection. BACKGROUND

[0002] The food residue microbial detection device is a rapid detection equipment suitable for multiple links such as food production, circulation and supervision, and is used for accurately screening pesticide residues and harmful microorganisms in food. It integrates rapid detection technology, biosensing or chromatographic analysis principles, and has the characteristics of convenient operation, short detection period and intuitive results. Without complex pretreatment, it can realize on-site or laboratory rapid analysis, effectively assist enterprises in quality control, supervision departments in sampling inspection and food safety risk early warning, and provide technical support for food safety from source to table.

[0003] In the field of food quality and safety detection, the content of pesticide residues and the situation of microbial pollution are the core detection indexes. In the existing detection technology, pesticide residue detection and microbial detection are usually carried out separately, and the food samples need to be pretreated and detected respectively. Not only the process is complicated and the detection efficiency is low, but also the time difference between the two detection sample pretreatments will cause the timeliness deviation of the detection results, affect the data accuracy, and the processing function is single, which is difficult to adapt to the detection needs of solid food and powder food at the same time, and the problems of insufficient grinding of solid samples and uneven mixing of powder samples. SUMMARY

[0004] In order to make up for the shortcomings of the prior art, the existing device cannot simultaneously detect pesticide residues and microorganisms, and the sample pretreatment adaptability is poor. The present application provides a food residue microbial detection device for food detection.

[0005] The technical scheme adopted by the present application to solve its technical problems is: the food residue microbial detection device for food detection comprises: a base for supporting other elements; a synchronous detection device installed on the top of the base, the synchronous detection device comprising a flow sensor for flow statistics, one side of the flow sensor being connected with a three-way electromagnetic valve, and the three-way electromagnetic valve being fixedly installed with at least two conveying pipes; a pretreatment assembly installed on the top of the base, the pretreatment assembly comprising a turntable, the bottom of the turntable being fixed with a turntable for rotating, and the top of the turntable being installed with a solid treatment unit and a powder treatment unit for pretreatment of the synchronous detection device; a filtering mechanism fixedly installed on the top of the base, the filtering mechanism comprising a collecting hopper, the collecting hopper collecting the filtrate generated by the solid treatment unit and the powder treatment unit, and a conveying hose conveying the filtrate into the three-way electromagnetic valve in the synchronous detection device.

[0006] Preferably, the synchronous detection device further includes a pesticide residue detection chamber and a microbial detection chamber, which are respectively fixed to one end of the two delivery pipes.

[0007] Preferably, the pretreatment component further includes a limiting sleeve, the inner cavity of which is rotatably mounted with a rotating shaft, the top end of which is fixedly connected to a turntable, and the bottom end of which is fixedly mounted with a linkage arm, one side of which is hinged to the output end of a hydraulic cylinder, and the middle section of the hydraulic cylinder is hinged to a fixing block.

[0008] Preferably, the solid processing unit includes a sealing element that is movably snapped onto one side of the working chamber. The bottom of the working chamber is fixedly connected to a chamber bottom, and the working chamber, the sealing element, and the chamber bottom are combined to seal the inner cavity. A first servo motor is provided on the top of the working chamber, and a cutter is detachably installed on the output end of the first servo motor. A grinding disc is fixedly installed on the bottom of the cutter, and the bottom of the grinding disc cooperates with the chamber bottom to form a clearance fit. An ultrasonic transducer is fixedly installed on the bottom of the chamber bottom.

[0009] Preferably, the powder processing unit includes a support rod, a connecting frame is fixedly installed on the top of the support rod, a stirring chamber is fixedly installed in the middle, a gear disk is fixedly installed on one side of the connecting frame, a sun gear is meshed with the inner side of the gear disk through planetary gears, a stirring rod is fixedly installed on the bottom of the planetary gears, and a fixed plate and a limiting ring are fixed on the upper and lower sides of the gear disk respectively. The fixed plate and the limiting ring cooperate with each other to limit the planetary gears within the inner cavity of the gear disk.

[0010] Preferably, the powder processing unit further includes a connecting plate, which is fixedly installed on the bottom of the sun gear by bolts, and an annular groove is provided between the connecting plate and the limiting ring for the stirring rod to move.

[0011] Preferably, the filtration mechanism further includes a filter chamber, which has a movable groove for the placement platform to move. A filter screen is placed on the top of the placement platform and slides into the inner cavity of the filter chamber through the placement platform. Drop grooves are provided on both the upper and lower sides of the filter chamber.

[0012] Preferably, the bottom of the filter chamber has four limiting grooves, and access rods are movably installed through the limiting grooves. All four access rods are fixedly installed on the top of the collection hopper.

[0013] Preferably, the filtration mechanism further includes a flow stop plate, the bottom of which is provided with a silicone pad, the silicone pad being fixedly installed at the output end of the cylinder, and a delivery hose being provided between the flow stop plate and the cylinder.

[0014] Preferably, a peristaltic pump is connected to the outer surface of the delivery hose, so that the peristaltic pump generates power to deliver the filtrate collected in the collection hopper to the pesticide residue detection chamber and the microbial detection chamber.

[0015] The advantages of this invention are: 1. This invention, through the cooperation of a flow sensor and a three-way solenoid valve in a synchronous detection device, delivers the filtrate in separate streams to the pesticide residue detection chamber and the microbial detection chamber simultaneously, solving the problem that traditional detection cannot be carried out synchronously, avoiding sample timeliness deviation, and improving the accuracy and efficiency of detection results; 2. This invention, through the dual-unit design of the solid processing unit and the powder processing unit in the pretreatment component, combined with the rotation adjustment function of the turntable, can adapt to the pretreatment needs of food samples in both solid and powder forms. Furthermore, the combination of the Teflon coating, micro vibrator and ultrasonic transducer in the solid processing unit reduces the problems of sample wall adhering loss and insufficient grinding, thereby improving the adaptability of the device to different samples and the pretreatment effect. 3. This invention solves the problems of inconvenient filter replacement and cross-contamination caused by internal residues in traditional devices by using a slidable replaceable filter screen, a detachable collection hopper, and a cleaning space created by the rotation of the turntable. Simultaneously, the cooperation between the baffle plate and the peristaltic pump ensures the stability of filtrate delivery, preventing backflow and leakage, and further improving the reliability of the testing process. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an exploded view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the synchronous detection device of the present invention; Figure 4 This is an exploded view of the pretreatment component structure of the present invention; Figure 5 This is an exploded view of the solid processing unit structure of the present invention; Figure 6 This is an exploded view of the powder processing unit structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point A in the middle; Figure 8This is an exploded view of the filtration mechanism structure of the present invention; Figure 9 For the present invention Figure 8 Enlarged schematic diagram of the structure at point B.

[0017] In the diagram: 100, base; 200. Synchronous detection device; 210. Flow sensor; 211. Three-way solenoid valve; 212. Delivery pipe; 220. Pesticide residue detection chamber; 230. Microbial detection compartment; 300. Pretreatment component; 310. Turntable; 320. Turntable; 321. Limiting sleeve; 322. Rotating shaft; 323. Linkage arm; 324. Hydraulic cylinder; 325. Fixing block; 330. Solid processing unit; 331. Working chamber; 332. Seal; 333. Miniature vibrator; 334. Cutter; 335. First servo motor; 336. Grinding disc; 337. Chamber bottom; 338. Ultrasonic transducer; 339. First control valve; 340. Powder processing unit; 341. Support rod; 342. Mixing chamber; 343. Connecting frame; 344. Second control valve; 350. Gear disc; 351. Fixing disc; 352. Sun gear; 353. Planetary gear; 354. Mixing rod; 355. Connecting disc; 356. Limiting ring; 357. Second servo motor; 400. Filtration mechanism; 410. Filter compartment; 411. Placement platform; 412. Filter screen; 413. Movable trough; 414. Drop trough; 420. Gathering hopper; 421. Connecting rod; 422. Delivery hose; 430. Flow stop plate; 431. Cylinder; 432. Silicone pad; 433. Peristaltic pump. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1 and Figure 2 As shown, a food pesticide residue microbial detection device for food testing includes a base 100, a synchronous detection device 200, a pretreatment component 300, and a filtration mechanism 400; the pretreatment component 300 is located directly above the base 100, the bottom of the filtration mechanism 400 is fixed to the base 100, and the synchronous detection device 200 is fixed to the top of the base 100. Furthermore, in existing technologies, the testing for pesticide residues and microorganisms is usually divided into two parts. When testing is required, it is not possible to test them simultaneously, which causes a time-sensitivity deviation in the testing of pre-treated food for the two tests, thus affecting the accuracy of the test results. In operation, the turntable 310 is rotated by the hydraulic cylinder 324, aligning the solid processing unit 330 or the powder processing unit 340 with the filtration mechanism 400. The sample, after passing through the corresponding solid processing unit 330 or powder processing unit 340, forms a mixture that falls into the filter chamber 410 and is filtered by the filter screen 412. The filtrate then flows into the collection hopper 420. The peristaltic pump 433 delivers the filtrate to the three-way solenoid valve 211 of the synchronous detection device 200 via the delivery hose 422. After adjustment by the flow sensor 210, the filtrate is distributed to the pesticide residue detection chamber 22 via the delivery pipe 212. Simultaneous detection is performed in the pesticide residue detection chamber 220 and the microbial detection chamber 230 (specifically, the simultaneous detection device 200 enables parallel analysis and synchronous data acquisition of the same sample extract). To prevent cross-contamination, the fluid paths of the pesticide residue detection chamber 220 and the microbial detection chamber 230 are completely independent after the three-way solenoid valve 211, using tubing with different chemical inert properties. In addition, the entire device integrates an online cleaning function (which can use existing technology), enabling automatic cleaning procedures to be executed before and after each test, rinsing the pesticide residue and microbial detection pathways separately. The flow stop plate 430 can control the delivery. like Figure 3 As shown, the synchronous detection device 200 includes a flow sensor 210, which monitors the amount of sample flowing into the pesticide residue detection chamber 220 and the microbial detection chamber 230 in real time. If the amount of sample in either chamber is insufficient or excessive, it immediately feeds back to the three-way solenoid valve 211 to adjust the delivery pipe 212, ensuring that the amount of sample in the pesticide residue detection chamber 220 and the microbial detection chamber 230 is consistent. In use, the flow sensor 210 can not only judge the flow rate, but also record the total amount of sample entering the pesticide residue detection chamber 220 and the microbial detection chamber 230. When delivering the sample, the flow rate is monitored in real time, and the three-way solenoid valve 211 is used to divide the sample into two streams through the delivery pipe 212 to ensure that the pesticide residue detection chamber 220 and the microbial detection chamber 230 perform synchronous detection. like Figure 4As shown, the pretreatment assembly 300 is equipped with a turntable 320. The rotating shaft 322 at the bottom of the turntable 320 can rotate within the cavity of the limiting sleeve 321. The bottom of the rotating shaft 322 is connected to the output end of the hydraulic cylinder 324 via a linkage arm 323. When the turntable 320 needs to rotate, the hydraulic cylinder 324 is driven to extend and retract the piston rod at the output end. The middle position of the hydraulic cylinder 324 is hinged and limited by a fixing block 325. Both the fixing block 325 and the limiting sleeve 321 are fixed to the base. At the top of 100, because the hydraulic cylinder 324 and the rotating shaft 322 are limited, when the piston rod at the output end of the hydraulic cylinder 324 moves, it drives the linkage arm 323 to move in a circular motion around the position of the rotating shaft 322. At the same time, the rotating shaft 322 rotates in the inner cavity of the limiting sleeve 321. The top of the turntable 320 is fixedly connected to the turntable 310. With the drive of the hydraulic cylinder 324, the turntable 310 and the solid processing unit 330 and powder processing unit 340 on its top will be adjusted in position, such as... Figure 2 As shown, when the turntable 310 is in motion, the bottom of the solid processing unit 330 or the powder processing unit 340 can be directly facing the filter mechanism 400, or the turntable 310 can be rotated 90 degrees so that there are no obstructions above the filter mechanism 400, which facilitates the cleaning or use of the filter mechanism 400, and can be adjusted according to the type of food sample to be tested. like Figure 5 As shown, when the food sample being tested is solid, the solid processing unit 330 consists of a working chamber 331, a sealing element 332, and a chamber bottom 337. The inner wall coating is a Teflon non-stick coating. The chamber bottom 337 is an inverted cone shape, with the cone bottom connected to the first control valve 339. The sealing element 332 is movably engaged with one side of the working chamber 331 via a slot and latch, and the connection is sealed by a sealing strip. The food sample and an equal proportion of buffer solution are placed inside the working chamber 331. After completion, the inner cavity is sealed using the sealing element 332. The first servo motor 335, located at the top of the working chamber 331, is driven to rotate the cutter 334. The cutter 334 cuts the solid sample, and the cut sample falls to the top of the chamber bottom 337 under its own weight. The bottom of the cutter 334 drives the fixed grinding disc 336 to rotate synchronously. Driven by the first servo motor 335, the grinding disc 336 repeatedly squeezes the sample. The outer wall of the chamber bottom 337 is equipped with an ultrasonic transducer 338, which uses the ultrasonic cavitation effect to break up stubborn tissues and avoid large particles in the mixture. The working time of the first servo motor 335 can be set accordingly. When the working time ends, the sample in the chamber bottom 337 becomes a mixture. The first control valve 339 is opened, and the micro vibrator 333 is started to vibrate the outer wall of the working chamber 331. Since the working chamber 331, the seal 332 and the inner wall of the chamber bottom 337 are coated with Teflon non-stick coating, the vibration of the micro vibrator 333 prevents the homogenized mixture from being lost due to wall adhesion. likeFigure 6 As shown, when the food sample being tested is powder, the powder processing unit 340 is equipped with a support rod 341 to fix the mixing chamber 342. The top supports the connecting frame 343, and the bottom of the connecting frame 343 is connected to a second control valve 344. When the powder and buffer solution in the inner cavity of the mixing chamber 342 are fully mixed, the second control valve 344 can be opened to allow the mixture in the inner cavity of the mixing chamber 342 to fall. Figure 7 As shown, the connecting bracket 343 wraps and fixes one outer surface of the gear disk 350. The gear disk 350 is sequentially connected to a planetary gear 353 and a sun gear 352 from the inside to the outside. The sun gear 352 is fixedly installed on the output end of the second servo motor 357 via a drive shaft. The top of the gear disk 350 is fixed to the second servo motor 357 by a fixing plate 351. While fixing, the top of the planetary gear 353 is limited. A limit ring 356 is fixed to the bottom of the gear disk 350. The limit ring 356 and the fixing plate 351 work together to limit the position of the planetary gear 353. When working, an appropriate amount of powder and buffer liquid are added to the mixing chamber 342, driving the second servo motor 357. Its output end drives the sun gear 352 to rotate accordingly. One side of the sun gear 352 meshes with the planet gear 353, and the other side of the planet gear 353 is meshed and limited by the gear disk 350. At this time, the planet gear 353 will move in a circle with the sun gear 352, while the planet gear 353 itself rotates. The bottom of the planet gear 353 is fixed with the stirring rod 354 to stir the inner cavity of the mixing chamber 342, so that the powder and the mixture are fully mixed. like Figure 7 As shown, a connecting plate 355 is provided at the bottom of the sun gear 352, which is fixed by bolts. An annular groove is provided between the limiting ring 356 and the connecting plate 355 to allow the stirring rod 354 to move. The annular groove can be used to limit the movement of the stirring rod 354. At the same time, the top of the connecting plate 355 is used to add support to the bottom of the planetary gear 353 to ensure the stability of the planetary gear 353 during movement. like Figure 8 As shown, the filtration mechanism 400 includes a filter chamber 410. A movable groove 413 is provided on one side of the filter chamber 410, allowing the placement platform 411 to slide within the filter chamber 410. Personnel can pull the placement platform 411 outwards from the filter chamber 410 using a handle to replace the filter screen 412 placed on top of the placement platform 411. Figure 2 and Figure 4 As shown, when the hydraulic cylinder 324 drives the turntable 310 to move, and a specific solid processing unit 330 or powder processing unit 340 is directly above the filter chamber 410, the solid processing unit 330 or powder processing unit 340 has completed mixing the solid or powder buffer solution. Figure 8As shown, when the mixture from the solid processing unit 330 or the powder processing unit 340 is discharged, the mixture will flow into the inner cavity through the drop trough 414 at the top of the filter chamber 410. The filter screen 412 on the placement platform 411 can be selected with different pore sizes according to the detection requirements to filter large particulate impurities in the mixture, so as to avoid clogging the subsequent conveying pipeline or affecting the detection accuracy. The filtered filtrate flows into the collection hopper 420 through the drop trough 414 at the bottom of the filter chamber 410. The collection hopper 420 is movably connected to the limiting groove of the filter chamber 410 through the four access rods 421 at the top, which is convenient for disassembly and cleaning. like Figure 9 As shown, the stop plate 430 of the filtration mechanism 400 can move up and down under the drive of the cylinder 431. When it is necessary to pause the sample delivery, the cylinder 431 pushes the stop plate 430 down, and the silicone pad 432 at the bottom fits tightly against the port of the delivery hose 422 to achieve a seal and prevent backflow or leakage of the filtrate. When the peristaltic pump 433 on the outer surface of the delivery hose 422 is working, it generates negative pressure by squeezing the hose to stably deliver the filtrate collected in the collection hopper 420 to the three-way solenoid valve 211. After being monitored and distributed by the flow sensor 210, it is sent into the pesticide residue detection chamber 220 and the microbial detection chamber 230 respectively to complete the synchronous detection. After the test is completed, the hydraulic cylinder 324 can be driven to rotate the turntable 310 90 degrees so that there is no obstruction above the filtration mechanism 400. At this time, the placement table 411 can be pulled out to replace the filter screen 412, or the filter chamber 410 and the collection hopper 420 can be rinsed. At the same time, the seal 332 of the solid processing unit 330 and the top cover of the powder processing unit 340 can be opened to clean the internal cavity and avoid residual sample contamination of subsequent tests.

[0020] The pretreatment component 300 and the filtration mechanism 400 in the overall device achieve efficient collaboration through spatial and functional linkage. The rotary table 310 of the pretreatment component 300 serves as both a selection platform, intelligently calling either the solid processing unit 330 or the powder processing unit 340 based on the sample's physical state, and a positioning mechanism, precisely positioning the working processing unit to the filtration mechanism 400 below, forming a seamless pretreatment-filtration production line. Simultaneously, the collection hopper 420 of the filtration mechanism 400 not only receives and collects the filtrate but also serves as a common outlet for the entire pretreatment area, uniformly transporting samples from different pretreatment paths to the detection module. This design eliminates complex pipeline switching and multiple collection containers, solving multiple problems such as sample diversion, equipment positioning, and process integration with a single rotational motion, achieving highly efficient automation within a compact space.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A food pesticide residue microbial detection device for food testing, characterized in that: Including: The base (100) is used to support other components; A synchronous detection device (200) is installed on the top of the base (100). The synchronous detection device (200) includes a flow sensor (210) for flow statistics. One side of the flow sensor (210) is connected to a three-way solenoid valve (211). The three-way solenoid valve (211) is fixedly installed with at least two delivery pipes (212). A pretreatment assembly (300) is mounted on top of a base (100). The pretreatment assembly (300) includes a turntable (310) with a turntable (320) fixed to the bottom for rotating it. A solid processing unit (330) and a powder processing unit (340) for detecting the pretreatment by a synchronous detection device (200) are mounted on top of the turntable (310). The filtration mechanism (400) is fixedly installed on the top of the base (100). The filtration mechanism (400) includes an agglomeration hopper (420) which receives the filtrate produced by the agglomeration solids processing unit (330) and the powder processing unit (340) and delivers the filtrate to the three-way solenoid valve (211) in the synchronous detection device (200) via a delivery hose (422).

2. The food pesticide residue microbial detection device for food testing according to claim 1, characterized in that: The synchronous detection device (200) further includes a pesticide residue detection chamber (220) and a microbial detection chamber (230), which are respectively fixed to one end of two delivery pipes (212).

3. The food pesticide residue microbial detection device for food testing according to claim 1, characterized in that: The pretreatment component (300) also includes a limiting sleeve (321), in which a rotating shaft (322) is rotatably mounted. The top end of the rotating shaft (322) is fixedly connected to the turntable (310), and a linkage arm (323) is fixedly mounted at the bottom end. One side of the linkage arm (323) is hinged to the output end of the hydraulic cylinder (324), and a fixing block (325) is hinged to the middle section of the hydraulic cylinder (324).

4. The food pesticide residue microbial detection device for food testing according to claim 1, characterized in that: The solid processing unit (330) includes a sealing element (332), which is movably snapped onto one side of the working chamber (331). The bottom of the working chamber (331) is fixedly connected to a chamber bottom (337). The working chamber (331), the sealing element (332), and the chamber bottom (337) are combined to seal the inner cavity. A first servo motor (335) is provided on the top of the working chamber (331). A cutter (334) is detachably installed at the output end of the first servo motor (335). A grinding disc (336) is fixedly installed at the bottom of the cutter (334). The bottom of the grinding disc (336) cooperates with the chamber bottom (337) and creates a clearance fit. An ultrasonic transducer (338) is fixedly installed at the bottom of the chamber bottom (337).

5. The food pesticide residue microbial detection device for food testing according to claim 1, characterized in that: The powder processing unit (340) includes a support rod (341), a connecting frame (343) is fixedly installed on the top of the support rod (341), a stirring chamber (342) is fixedly installed in the middle, a gear plate (350) is fixedly installed on one side of the connecting frame (343), a sun gear (352) is meshed with the inner side of the gear plate (350) through a planetary gear (353), a stirring rod (354) is fixedly installed on the bottom of the planetary gear (353), a fixed plate (351) and a limiting ring (356) are fixed on the upper and lower sides of the gear plate (350) respectively, and the fixed plate (351) and the limiting ring (356) cooperate with each other to limit the planetary gear (353) to be located in the inner cavity of the gear plate (350).

6. The food pesticide residue microbial detection device for food testing according to claim 5, characterized in that: The powder processing unit (340) also includes a connecting plate (355), which is fixedly installed on the bottom of the sun gear (352) by bolts. An annular groove is left between the connecting plate (355) and the limiting ring (356) for the stirring rod (354) to move.

7. The food pesticide residue microbial detection device for food testing according to claim 1, characterized in that: The filtration mechanism (400) also includes a filter chamber (410), which has an movable groove (413) for the placement platform (411) to move. A filter screen (412) is placed on the top of the placement platform (411), and the filter screen (412) slides into the inner cavity of the filter chamber (410) through the placement platform (411). The filter chamber (410) has drop grooves (414) on both the upper and lower sides.

8. The food pesticide residue microbial detection device for food testing according to claim 7, characterized in that: The bottom of the filter chamber (410) is provided with four limiting grooves, and access rods (421) are movably installed through the limiting grooves. All four access rods (421) are fixedly installed on the top of the collection hopper (420).

9. A food pesticide residue microbial detection device for food testing according to claim 8, characterized in that: The filtration mechanism (400) also includes a flow stop plate (430), the bottom of which is provided with a silicone pad (432), the silicone pad (432) is fixedly installed at the output end of the cylinder (431), and a delivery hose (422) is provided between the flow stop plate (430) and the cylinder (431).

10. A food pesticide residue microbial detection device for food testing according to claim 9, characterized in that: The outer surface of the delivery hose (422) is connected to a peristaltic pump (433), which generates power to transport the filtrate collected in the collection hopper (420) to the pesticide residue detection chamber (220) and the microbial detection chamber (230).

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