Food safety detection conveying device with screening function
The integrated screening and mixing mechanism enables efficient screening and mixing of sugar beans, solving the problems of high equipment investment, large footprint, and pollution risk in existing technologies, and improving production efficiency and safety.
Patent Information
- Application Number
- CN202511903396.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-17
- Publication Date
- 2026-01-20
AI Technical Summary
Existing food safety testing and conveying devices are costly, require a large area, involve complicated procedures, and pose risks of contamination and particle breakage during material transfer when handling various flavors and colors of candy.
It adopts an integrated screening and mixing mechanism, which integrates screening and mixing functions into one. The drive structure drives the main screening box and the auxiliary screening box to work alternately, realizing alternating trajectory screening and elliptical trajectory mixing. The linkage mechanism automatically discharges materials, reducing the number of equipment and the number of material transfers.
It significantly reduces equipment investment and floor space, improves production efficiency, reduces particle breakage and contamination risks, and achieves continuous and automated process flow.
Smart Images
Figure CN121360698A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of food processing, in particular to a food safety detection conveying device with screening function. BACKGROUND
[0002] In the industrial production of food, especially the production line of granular food such as candies and sugar beans, food safety detection and sorting are crucial links. The existing food safety detection conveying device usually integrates optical sensors (such as color recognition, shape recognition), metal detectors or X-ray machines, etc. for online non-destructive detection of food during conveying to remove foreign matter, defective products or unqualified products. For sugar bean products, the consistency of their specifications (size) is also an important quality indicator. Therefore, in the production process, an independent mechanical vibrating screen or drum screen is often set before or after the detection link to classify and screen sugar beans by particle size, ensuring the uniformity of the final product specifications. However, with the growing market demand for product diversity, there are products that mix two or more different flavors and colors of sugar beans in one package. Under the existing technical process, sugar beans of different flavors and colors may need to be screened separately to ensure that they meet the specifications before being mixed. This requires the production line to be equipped with multiple independent screening devices to handle different types of sugar beans, and then additional mixing equipment is needed for mixing. Finally, conveying and detection are performed. This multi-device serial process not only significantly increases equipment investment costs, floor space and energy consumption, but also complicates the process, which may increase the risk of contamination and particle breakage during material transfer. SUMMARY
[0003] The purpose of the present application is to provide a food safety detection conveying device with screening function.
[0004] The purpose of the present application is achieved by the following technical solution: a food safety detection conveying device with screening function, comprising a conveying mechanism, a detection mechanism arranged on the conveying mechanism, and a suspension system arranged above the conveying mechanism; Further comprising an integrated screening and mixing mechanism, the integrated screening and mixing mechanism comprising: a mixing box arranged above the feed end of the conveying mechanism; a screening assembly slidingly arranged on the mixing box for carrying and screening multiple sugar beans to be mixed, the screening assembly comprising a main screening box and at least one auxiliary screening box arranged side by side and connected to each other; a driving structure connected to the mixing box and drivingly connected to the screening assembly for driving the screening assembly to reciprocate on the mixing box to achieve screening; The inner cavities of the main screening box and the auxiliary screening box are respectively provided with screening holes with different aperture, and the screening assembly is provided with a leak-proof structure capable of switching between open and closed states.
[0005] A guide rod is symmetrically fixed to the inner side of the mixing box, the screening assembly is slidably connected with the guide rod through a mounting seat, and the top of the mounting seat is provided with a sliding groove, and the bottom of the main screening box and the auxiliary screening box is slidably connected with the sliding groove.
[0006] The driving structure comprises a driving member fixed to the bottom of the mixing box, a connecting member connected with the output shaft of the driving member, and a transmission rod slidably connected with the connecting member, one end of the transmission rod is movably connected with the inner cavity of the auxiliary screening box, and an elastic member b is sleeved on the transmission rod.
[0007] The leak-proof structure comprises a blocking plate slidably arranged in the main screening box and the auxiliary screening box, and the blocking plate is movably connected with the main screening box and the auxiliary screening box through a connecting plate, and an elastic member a is arranged between the blocking plate and the inner wall of the main screening box and the auxiliary screening box, and the elastic force of the elastic member a keeps the through hole of the blocking plate misaligned with the corresponding screening hole in normal state.
[0008] When the main screening box or the auxiliary screening box is moved to above the mixing box driven by the driving structure, the connecting plate below the main screening box or the auxiliary screening box is in extrusion contact with the surface of the mounting seat, forcing the blocking plate in the main screening box or the auxiliary screening box to move against the elastic force of the elastic member a, so that the through hole of the blocking plate is aligned with the screening hole of the main screening box or the auxiliary screening box, and the screening is opened. When the main screening box or the auxiliary screening box moves away from above the mixing box, the extrusion is released, and the blocking plate is reset under the action of the elastic member a, so that the through hole is misaligned with the screening hole, and the locking is realized.
[0009] The main screening box and the auxiliary screening box are arranged staggered above the mixing box, so that the screening holes of the main screening box and the auxiliary screening box can be alternately opened in the same reciprocating motion cycle driven by the driving structure.
[0010] The integrated screening and mixing mechanism further comprises a stirring assembly arranged in the mixing box, the stirring assembly comprises a connecting block connected with the bottom of the main screening box and a stirring rod fixed below the connecting block.
[0011] The bottom of the mixing box is provided with a discharge port, and the inner cavity of the mixing box is in a tapered structure with the top larger and the bottom smaller, and the stirring rod is in a V-shaped or U-shaped structure.
[0012] The intermittent discharging structure is provided with a discharging plate slidingly arranged at the bottom of the mixing box, the discharging plate is provided with a through slot, and the discharging plate and the mixing box are provided with an elastic element c, and the bottom of the main screening box is further fixedly connected with a trigger plate; When the main screening box is moved above the mixing box under the driving of the driving structure, the trigger plate extrudes the discharging plate, overcomes the elastic force of the elastic element c, aligns the through slot on the discharging plate with the discharging port at the bottom of the mixing box, so as to realize the discharging of the mixed material, when the main screening box is away from above the mixing box, the trigger plate is removed, the discharging plate is reset under the action of the elastic element c, the through slot is misaligned with the discharging port, and the discharging is closed. Compared with the prior art, the advantages of the present application are that: 1. The integrated screening and mixing mechanism of the present application integrates the screening and mixing functions, and only one driving structure is needed to drive the main screening box and the auxiliary screening box to work alternately, and to stir the material falling into the mixing box below, thereby saving multiple independent devices and their connecting links, and significantly reducing the initial investment, maintenance cost and production line area.
[0013] 2. The present application realizes the continuous and automatic process flow, and the material is sequentially subjected to alternating trajectory screening and elliptical trajectory stirring in the same device, and finally is automatically discharged through the linkage mechanism, so that the whole process is realized on one device, the number of material transfer between different devices is reduced, the production efficiency is improved, and the risk of particle breakage and potential pollution risk caused by multiple transfers is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 is a structural schematic diagram of an embodiment of the present application; Figure 2 is a structural schematic diagram of an integrated screening and mixing mechanism of the present application; Figure 3 is a split diagram of the present application; Figure 2 is a split diagram of the present application; Figure 4 Figure 3 is a split diagram of the present application; Figure 5 is a structural schematic diagram of a main screening box of the present application; Figure 6 is a split diagram of the present application; Figure 5 is a structural schematic diagram of an auxiliary screening box of the present application; Figure 7 is a split diagram of the present application. Figure 8 Figure 7 Label explanation: 1, conveying mechanism; 101, detection mechanism; 2, mixing box; 3, main screening box; 301, auxiliary screening box; 201, guide rod; 202, mounting seat; 203, sliding groove; 4, driving part; 401, connecting piece; 402, transmission rod; 403, elastic piece b; 5, blocking plate; 501, through hole; 502, connecting plate; 503, elastic piece a; 6, connecting block; 601, stirring rod; 7, discharge plate; 701, through slot; 702, elastic piece c; 703, trigger plate. DETAILED DESCRIPTION
[0015] The content of the application will be described in detail below in combination with the drawings and examples of the specification: As Figures 1-8 The embodiment of the food safety detection conveying device with screening function provided by the application is shown in the figure, which comprises a conveying mechanism 1, a detection mechanism 101 arranged on the conveying mechanism 1, and a suspension system arranged above the conveying mechanism 1; It also comprises an integrated screening and mixing mechanism, which comprises: A mixing box 2 arranged above the feeding end of the conveying mechanism 1; A screening assembly arranged slidingly on the mixing box 2 for carrying and screening a plurality of mixed sugar beans, the screening assembly comprising a main screening box 3 and at least one auxiliary screening box 301 arranged side by side and connected to each other; A driving structure connected to the mixing box 2 and drivingly connected to the screening assembly for driving the screening assembly to reciprocate on the mixing box 2 to realize screening; The inner cavities of the main screening box 3 and the auxiliary screening box 301 are respectively provided with screening holes with different screening hole diameters, and the screening assembly is provided with a leak-proof structure which can be switched between open and closed states; The present application combines conveying and detection with integrated screening and mixing functions, which has the beneficial effect of providing an integrated solution that can continuously classify, screen, mix and subsequently detect different types of sugar beans on a single device, thereby significantly reducing the number of production line equipment, floor area and production links, improving overall efficiency and reducing costs.
[0016] The guide rod 201 is fixed symmetrically on the inner side of the mixing box 2, the screening assembly is slidingly connected with the guide rod 201 through the mounting seat 202, the top of the mounting seat 202 is provided with the sliding groove 203, and the bottom of the main screening box 3 and the auxiliary screening box 301 is slidingly matched with the sliding groove 203; The present application provides precise and stable linear guidance for the reciprocating motion of the screening assembly, ensuring the controllability of the motion trajectory, and the design of the sliding groove 203 allows the main and auxiliary screening boxes to have relative movement space on the mounting seat 202, laying a foundation for realizing subsequent compound trajectory motion.
[0017] The driving structure comprises a driving part 4 fixed to the bottom of the mixing box 2, a connecting part 401 connected with the output shaft of the driving part 4, and a transmission rod 402 in sliding connection with the connecting part 401, one end of the transmission rod 402 being in movable connection with the inner cavity of the secondary screening box 301, and an elastic part b 403 being sleeved on the transmission rod 402; The scheme provides a non-rigid transmission power output mode, the transmission rod 402 in sliding connection and the elastic part b 403 constitute a buffering mechanism, which can effectively absorb the impact generated in the movement process, avoid rigid collision and damage between the driving part 4, the connecting part 401 and the screening assembly due to blockage or position deviation, and improve the reliability and service life of the system.
[0018] The anti-leakage structure comprises a blocking plate 5 slidingly arranged in the primary screening box 3 and the secondary screening box 301, the blocking plate 5 being provided with through holes 501 with the same aperture as the corresponding screen holes; the blocking plate 5 is movably connected with the primary screening box 3 and the secondary screening box 301 through a connecting plate 502, and an elastic part a 503 is arranged between the blocking plate 5 and the inner wall of the primary screening box 3 and the secondary screening box 301, the elastic force of the elastic part a 503 enabling the through holes 501 of the blocking plate 5 to be misaligned with the corresponding screen holes in a normal state; The scheme realizes controllable opening and closing of the screen holes, the blocking plate 5 is kept locked (the through holes 501 are misaligned with the screen holes) in a normal state by the elastic part a 503, and is only opened under pressure at a specific position requiring screening, which prevents the jelly beans from being mistakenly leaked out in a non-screening area or at a non-screening time, and ensures the accuracy and orderliness of the screening.
[0019] When the primary screening box 3 or the secondary screening box 301 is moved to above the mixing box 2 under the driving of the driving structure, the connecting plate 502 below the primary screening box 3 or the secondary screening box 301 is in extrusion contact with the surface of the mounting seat 202, forcing the blocking plate 5 in the primary screening box 3 or the secondary screening box 301 to move against the elastic force of the elastic part a 503, so that the through holes 501 are aligned with the screen holes of the primary screening box 3 or the secondary screening box 301, and the screening is realized; When the primary screening box 3 or the secondary screening box 301 leaves above the mixing box 2, the extrusion is released, the blocking plate 5 is reset under the action of the elastic part a 503, the through holes 501 are misaligned with the screen holes, and the locking is realized; The primary screening box 3 and the secondary screening box 301 are arranged staggered above the mixing box 2, so that the screen holes of the primary screening box 3 and the secondary screening box 301 can be alternately opened in the same reciprocating movement cycle driven by the driving structure. The scheme combines mechanical position (extrusion contact of the connecting plate 502 and the mounting seat 202) and spatial misalignment design, and only one set of driving structure is used to drive two screening boxes to perform screening operation in time and automatically in the same movement cycle, which greatly simplifies the mechanical structure and control logic, is efficient and low in cost.
[0020] The integrated screening and mixing mechanism further comprises a stirring assembly arranged in the mixing box 2, the stirring assembly comprising a connecting block 6 connected with the bottom of the main screening box 3 and a stirring rod 601 fixed below the connecting block 6; The bottom of the mixing box 2 is provided with a discharge port, and the inner cavity of the mixing box 2 is tapered from large at the top to small at the bottom, and the stirring rod 601 is in V-shaped or U-shaped structure; The movement of the stirring rod 601 is linked with the movement of the screening box, and no additional driving is needed, so that the different sugar beans falling into the mixing box 2 can be actively and efficiently stirred and mixed at the same time of screening, and the tapered structure of the mixing box 2 and the V / U-shaped stirring rod 501 further optimize the stirring effect, so that the mixing is more uniform and the discharge is more smooth.
[0021] The discharge port of the mixing box 2 is provided with an intermittent discharge structure, the intermittent discharge structure comprising a discharge plate 7 slidingly arranged at the bottom of the mixing box 2, the discharge plate 7 being provided with a through slot 701, and the discharge plate 7 and the mixing box 2 being provided with an elastic member c702, and the bottom of the main screening box 3 being further fixedly connected with a trigger plate 703; When the main screening box 3 is moved above the mixing box 2 under the driving of the driving structure, the trigger plate 703 presses the discharge plate 7, overcomes the elastic force of the elastic member c702, and aligns the through slot 701 on the discharge plate 7 with the discharge port at the bottom of the mixing box 2, so as to realize the discharge of the mixed material, when the main screening box 3 leaves above the mixing box 2, the trigger plate 703 moves away, the discharge plate 7 is reset under the action of the elastic member c702, the through slot 701 is misaligned with the discharge port, and the discharge is closed; The present scheme realizes the automatic linkage of the discharge action and the movement track of the main screening box 3, forms a time sequence control, and only when the mixing is completed and the main screening box 3 moves to a specific position (discharge area), the discharge is triggered, and after the discharge is completed, it is automatically closed, so as to ensure the integrity of the mixing process.
[0022] After the device is in place, the suspension system is used to hoist and respectively feed the plurality of sugar beans to be processed into the main screening box 3 and the auxiliary screening box 301, initially, the main screening box 3 is parked directly above the mixing box 2, at this time, the trigger plate 703 fixed to the bottom of the main screening box 3 is in the state of pressing the discharge plate 7, so that the discharge port is in the open state, and it can be ensured that there is no residual material in the mixing box 2; The driving structure is started to work, specifically, the driving member 4 (such as a servo motor) starts to work, the driving member 4 drives the connecting member 401 to rotate through the output shaft thereof, and then the power is transmitted to the auxiliary screening box 301 through the transmission rod 402 in sliding connection therewith, since the transmission rod 402 is in sliding connection with the connecting member 401, and the elastic member b 403 is sleeved on the transmission rod 402, the design allows the transmission rod 402 to be telescopic within a certain range, so that when the screening assembly may contact obstacles such as the inner wall of the mixing box 2 during movement, rigid impact can be avoided by contraction, and the elastic member b 403 provides the reset elastic force of the transmission rod 402; The driving structure drives the entire screening assembly to move along a specific compound trajectory, rather than simple linear reciprocating motion. After starting, the driving structure first drives the auxiliary screening box 301 to move towards the main screening box 3 (defined as "front"). The auxiliary screening box 301 is in sliding connection with the slide groove 203 through its bottom, which first drives the mounting seat 202 to slide along the guide rod 201, causing the auxiliary screening box 301 to move to the rightmost side above the mixing box 2. With the continuous rotation of the driving member 4, the auxiliary screening box 301 drives the mounting seat 202 to move from the rightmost side to the leftmost side above the mixing box 2, and then moves back to the original position. Therefore, the auxiliary screening box 301 completes a semi-elliptical trajectory movement of "front-right-left-back". Subsequently, the main screening box 3 is also driven by the driving structure to move above the mixing box 2 and repeat the above semi-elliptical trajectory movement of "front-right-left-back". During the above-mentioned semi-elliptical trajectory movement of "front-right-left-back" of the main screening box 3 and the auxiliary screening box 301, the gumballs placed therein are not static. Due to the compound movement of the screening boxes, the gumballs continuously roll, jump and slide in the boxes under the action of inertia. This continuous and orderly rolling movement allows the gumball particles to have the opportunity to continuously contact the screen holes opened in the box bottom. The gumball particles with a size smaller than the screen hole diameter will leak out of the corresponding screen holes during the rolling process and fall into the mixing box 2 below, while the particles with a size larger than the screen hole diameter will be retained in the box. With the continuous movement of the screening boxes, all gumballs of qualified particle size are screened out. This process realizes the effective classification and screening of gumballs according to particle size in different screening boxes. During the elliptical trajectory movement, the anti-blocking structure plays a key role. When the secondary screening box 301 moves to a specific area above the mixing box 2 (i.e. the section of its trajectory passing through the mixing box 2), the connecting plate 502 at the bottom thereof will be in extrusion contact with the surface of the mounting seat 202 below. This extrusion forces the blocking plate 5 in the secondary screening box 301 to move downward against the elastic force of the elastic member a 503, so that the through hole 501 on the blocking plate 5 is aligned with the screen hole at the bottom of the secondary screening box 301, thereby realizing opening of the screening and allowing small particle sugar beans meeting the screen hole aperture of the box to fall into the mixing box 2 below. When the secondary screening box 301 moves out of the area, the extrusion is released, and the blocking plate 5 is reset under the action of the elastic member a 503, the through hole 501 is misaligned with the screen hole, and the locking is realized, stopping the screening; Similarly, when the primary screening box 3 subsequently moves to the corresponding area above the mixing box 2 (its trajectory is staggered with the secondary screening box 301), the connecting plate 502 at the bottom thereof also extrudes the mounting seat 202, and opens the screening of its own larger aperture in the same principle, screening the larger particle sugar beans into the mixing box 2. Thus, in a complete driving cycle, the primary and secondary screening boxes complete the screening of sugar beans of different particle sizes in turn and alternately; The stirring assembly is rigidly connected to the bottom of the primary screening box 3 and includes a connecting block 6 and a stirring rod 601. Since the stirring rod 601 is installed at a position between the primary screening box 3 and the secondary screening box 301, when the primary and secondary screening boxes move in the above-mentioned semi-elliptical trajectory in turn, the stirring rod 601 located in the middle combines a complete elliptical trajectory movement in the mixing box 2. The inner cavity of the mixing box 2 has a tapered structure with a large upper part and a small lower part. The V-shaped or U-shaped stirring rod 601 performs sufficient and efficient stirring and mixing of different sugar beans falling in turn in the space along the elliptical trajectory. The intermittent discharging structure is triggered by the movement of the primary screening box 3. When the primary screening box 3 moves along its trajectory again above the mixing box 2 under the driving of the driving structure, the trigger plate 703 fixed to the bottom thereof moves together. In this process, the trigger plate 703 extrudes the discharging plate 7 slidingly arranged at the bottom of the mixing box 2, overcomes the elastic force of the elastic member c 702, and aligns the through slot 701 on the discharging plate 7 with the discharging port at the bottom of the mixing box 2, thereby discharging the uniformly mixed sugar beans to the conveying mechanism 1 below. When the primary screening box 3 carrying the trigger plate 703 leaves the area, the extrusion is released, and the discharging plate 7 is reset under the action of the elastic member c 702, the through slot 701 is misaligned with the discharging port, and the discharging is closed; Finally, the discharged sugar beans fall on the conveying mechanism 1 and are conveyed through the detection mechanism 101 arranged thereon to complete online detection of various food safety indicators. The entire working process is feeding, alternating trajectory screening, elliptical trajectory stirring, linkage discharging, and conveying and detection, which can be cycled accordingly. In the application, the conveying mechanism 1 is mainly used for receiving and conveying the sugar beans which have completed screening and mixing and are discharged from the mixing box 2, the detection mechanism 101 is arranged on the conveying mechanism 1 and used for detecting the food safety index of the sugar beans in the conveying process, and the suspension system is mainly used for hoisting and feeding the various sugar beans to be processed into the main screening box 3 and the auxiliary screening box 301 respectively. The specific structure and working principle of the conveying mechanism 1, the detection mechanism 101 and the suspension system all belong to the mature technology known in the art, are directly applied in the application, and the specific details can be referred to the existing public technical literature. The core innovation point of the application lies in the integrated screening and mixing mechanism which integrates screening, mixing and linkage discharging.
Claims
1. A food safety detection conveying device with screening function, comprising a conveying mechanism (1), a detection mechanism (101) arranged on the conveying mechanism (1), and a suspension system arranged above the conveying mechanism (1); further comprising an integrated screening and mixing mechanism, which comprises: a mixing box (2) arranged above the feeding end of the conveying mechanism (1); a screening assembly slidingly arranged on the mixing box (2) for carrying and screening a plurality of mixed sugar beans, the screening assembly comprising a main screening box (3) and at least one auxiliary screening box (301) arranged side by side and connected with each other; a driving structure connected to the mixing box (2) and drivingly connected with the screening assembly for driving the screening assembly to reciprocate on the mixing box (2) to realize screening; the main screening box (3) and the auxiliary screening box (301) are respectively provided with screen holes with different screen hole diameters at the bottom of the inner cavity, and the screening assembly is provided with a leak-proof structure which can be switched between open and closed states. characterized in that The inside of the mixing box (2) is symmetrically fixed with guide rods (201), the screening assembly is slidingly connected with the guide rods (201) through mounting seats (202), the top of the mounting seat (202) is provided with a sliding groove (203), and the bottom of the main screening box (3) and the auxiliary screening box (301) is slidingly matched with the sliding groove (203). The driving structure comprises a driving member (4) fixed to the bottom of the mixing box (2), a connecting member (401) connected with the output shaft of the driving member (4), and a transmission rod (402) slidingly connected with the connecting member (401), one end of the transmission rod (402) is movably connected with the inner cavity of the auxiliary screening box (301), and an elastic member b (403) is sleeved on the transmission rod (402). The leak-proof structure comprises a blocking plate (5) slidingly arranged in the main screening box (3) and the auxiliary screening box (301), the blocking plate (5) is provided with a through hole (501) with a diameter consistent with that of the corresponding screen hole; the blocking plate (5) is movably connected with the main screening box (3) and the auxiliary screening box (301) through a connecting plate (502), and an elastic member a (503) is arranged between the blocking plate (5) and the inner wall of the main screening box (3) and the auxiliary screening box (301), the elastic force of the elastic member a (503) makes the through hole (501) of the blocking plate (5) misaligned with the corresponding screen hole in the normal state. When the main screening box (3) or the auxiliary screening box (301) is moved above the mixing box (2) driven by the driving structure, the connecting plate (502) below the main screening box (3) or the auxiliary screening box (301) is in extrusion contact with the surface of the mounting seat (202), forcing the blocking plate (5) in the main screening box (3) or the auxiliary screening box (301) to move against the elastic force of the elastic member a (503), so that the through hole (501) of the blocking plate (5) is aligned with the screen hole of the main screening box (3) or the auxiliary screening box (301), realizing the opening of screening; 2. The food safety inspection conveying device with screening function according to claim 1, characterized in that: 3. The food safety inspection conveyor with screening function according to claim 1, characterized in that: 4. The food safety inspection conveyor with screening function according to claim 1, characterized in that: 5. The food safety inspection conveyor with screening function according to claim 2, characterized in that: When the main screening box (3) or the auxiliary screening box (301) leaves above the mixing box (2), extrusion is released, the blocking plate (5) resets under the action of the elastic element a (503), the through hole (501) is misaligned with the screen hole, and locking is realized.
6. The food safety inspection conveyor with screening function according to claim 5, characterized in that: The main screening box (3) and the auxiliary screening box (301) are arranged to be misaligned above the mixing box (2), so that in the same reciprocating motion cycle driven by the driving structure, the screen holes of the main screening box (3) and the auxiliary screening box (301) can be alternately opened.
7. The food safety inspection conveyor with screening function according to claim 1, characterized in that: The integrated screening and mixing mechanism further comprises a stirring assembly arranged in the mixing box (2), wherein the stirring assembly comprises a connecting block (6) connected with the bottom of the main screening box (3) and a stirring rod (601) fixed below the connecting block (6).
8. The food safety inspection conveyor with screening function according to claim 7, characterized in that: The bottom of the mixing box (2) is provided with a discharge port, and the inner cavity of the mixing box (2) is in a tapered structure that is large at the top and small at the bottom.
9. The food safety inspection conveyor with screening function according to claim 5, characterized in that: The mixing box (2) is provided with an intermittent discharge structure at the discharge port, the intermittent discharge structure comprises a discharge plate (7) slidingly arranged at the bottom of the mixing box (2), the discharge plate (7) is provided with a through slot (701), and an elastic element c (702) is arranged between the discharge plate (7) and the mixing box (2), and the bottom of the main screening box (3) is further fixedly connected with a trigger plate (703). When the main screening box (3) moves to above the mixing box (2) under the driving of the driving structure, the trigger plate (703) extrudes the discharge plate (7) and overcomes the elastic force of the elastic element c (702), so that the through slot (701) on the discharge plate (7) is aligned with the discharge port at the bottom of the mixing box (2), thereby realizing the discharge of the mixed material, when the main screening box (3) leaves above the mixing box (2), the trigger plate (703) moves away, the discharge plate (7) resets under the action of the elastic element c (702), so that the through slot (701) is misaligned with the discharge port, and the discharge is closed.