Food detection and separation device

Abstract

The invention relates to the technical field of food detection and separation, and discloses a food detection and separation device which comprises a separation tank, an end cover is arranged at the top of the separation tank, a driving assembly extending into the separation tank is installed at the bottom of the separation tank, and the top of the driving assembly is sequentially connected with a first-stage crushing assembly, a second-stage crushing assembly and a sorting assembly from top to bottom; the top of the first-stage crushing assembly extends into the feeding assembly in the middle of the end cover, and the driving assembly drives the first-stage crushing assembly, the second-stage crushing assembly and the sorting assembly to rotate at the same time. The first-stage crushing assembly, the second-stage crushing assembly, the sorting assembly and the gas path system are integrated in the same separation tank, and after food to be detected is fed from the feeding hopper, the whole process treatment of pre-extrusion, two-stage crushing, gas-solid sorting and separation collection can be completed without transferring. The occupied area of equipment is greatly reduced, the operation difficulty is reduced, secondary pollution in the material transfer process is avoided, the purity of a detection sample is ensured, and the reliability of a detection result is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of food detection and separation, in particular to a food detection and separation device. BACKGROUND

[0002] In the field of food detection, effective separation of food samples is a key prerequisite for ensuring the accuracy of detection. Food samples (such as grains, fruits and vegetables, meat, etc.) often have complex components, including solid particles, fibers and impurities of different particle sizes. In the process of food detection, in order to test the components in the food, some chemical means are needed for testing, so it is essential to crush and refine the food. In order to fully dissolve the chemical components in the food, the food needs to be crushed to the smallest particle size before subsequent detection of pesticide residues, microorganisms, nutritional components, etc.

[0003] The food detection and separation device on the market has many shortcomings: first, the crushing and sorting functions are separated, and multiple devices are needed to complete the task, which is not only complicated to operate, but also easy to introduce pollution during material transfer, affecting the reliability of the detection results; second, the crushing mechanism is usually designed with single-stage crushing, which is difficult to achieve complete crushing of hard or fibrous food, and due to the limited movement speed, the crushing efficiency is low, and the "clumping" phenomenon easily occurs, resulting in incomplete crushing of some materials; third, the sorting process relies on single gravity or centrifugal force, the sorting precision is low, and it is difficult to effectively distinguish materials with small particle size differences, and the material may accumulate and block the discharge channel. Therefore, we propose a food detection and separation device. SUMMARY

[0004] The purpose of the present application is to provide a food detection and separation device to solve the problems raised in the background.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a food detection and separation device, comprising a separation tank, the top of the separation tank is provided with an end cover, the bottom of the separation tank is provided with a drive assembly extending into the inside thereof, the top of the drive assembly is sequentially connected from top to bottom with a primary crushing assembly, a secondary crushing assembly and a sorting assembly; The top of the primary crushing assembly extends into the feeding assembly in the middle of the end cover, and the drive assembly simultaneously drives the primary crushing assembly, the secondary crushing assembly and the sorting assembly to rotate; The primary crushing assembly rotates to achieve primary crushing of the food to be detected in the feeding assembly, and the primary crushing assembly and the secondary crushing assembly rotate in opposite directions to achieve re-crushing of the food to be detected; When the food to be detected is crushed and falls to the sorting assembly, the drive assembly blows air to the sorting assembly, and under the blowing of the air, the sorted food to be detected is achieved.

[0006] Preferably, the bottom of the end cap is provided with an annular groove for sealing and locking onto the top of the separation tank.

[0007] Preferably, the feeding assembly includes a feeding hopper fixed to the middle of the upper end of the end cap and an extrusion tube connected to the bottom of the feeding hopper, with the bottom of the extrusion tube having circularly spaced leakage grooves. The top of the primary crushing component extends centrally into the extrusion tube.

[0008] Preferably, the drive assembly includes a bottom cylinder fixed centrally to the bottom of the separation tank, a sun gear centrally disposed inside the bottom cylinder, a planetary gear assembly meshing with the sun gear inside the bottom cylinder, and a motor for driving the sun gear to rotate installed at the lower end of the bottom cylinder. An outer rotating cylinder is fixed in the middle of the planetary gear assembly. The outer rotating cylinder extends into the separation tank. The central rotating shaft fixed in the middle of the upper end of the sun gear extends through the outer rotating cylinder. The primary crushing component is fixed to the top of the central rotating shaft, the secondary crushing component is fixed to the top of the outer rotating cylinder, the sorting component is sleeved and fixed to the outside of the outer rotating cylinder, and the bottom of the sorting component sits on the bottom wall of the separation tank.

[0009] Preferably, the primary crushing component includes an upper crushing disc, a protruding column centrally located at the upper end of the upper crushing disc, crushing plates fixed at equal intervals between the upper surface of the upper crushing disc and the protruding column, and spiral blades disposed on the upper surface of the protruding column. The upper surface of the upper crushing disc has an inner groove, the surface of the inner groove has a drop groove, and the lower end of the upper crushing disc has an upper crushing protrusion.

[0010] Preferably, the bottom of the protruding column is provided with a sleeve hole that fits onto the top of the central rotating shaft, and the inner wall of the sleeve hole is provided with a first slot, and the first locking block at the top of the central rotating shaft is locked into the corresponding first slot.

[0011] Preferably, a sealing cylinder seat is provided at the center of the lower end of the upper crushing disc, and the sealing cylinder seat is sleeved on the outer side of the top of the outer rotating cylinder.

[0012] Preferably, a limiting ring seat is fixed on the upper part of the outer rotating cylinder, and a number of second locking blocks are provided at equal intervals between the upper end of the limiting ring seat and the outer rotating cylinder; The secondary crushing component is a lower crushing disc. The upper surface of the lower crushing disc is provided with a lower crushing protrusion and a drop hole. The lower crushing disc sits on a limiting ring seat, and the second locking block is engaged in the corresponding second locking groove in the middle of the lower crushing disc.

[0013] Preferably, the sorting component includes a double cone, an intermediate fixing cylinder fixed in the middle of the double cone, an upper material discharge concave plate fixed after the upper part of the intermediate fixing cylinder extends out of the double cone, an inner material distribution cylinder connected to the bottom of the double cone by a cone cylinder, and an outer material distribution cylinder fixed to the outer side of the bottom of the inner material distribution cylinder by a connecting arm. The upper material discharge concave plate and the middle fixed cylinder are provided with several sets of material discharge channels at equal intervals at the connection point; The double cone includes a material guide cone with a narrow upper part and a wide lower part, and an air guide cone with a wide upper part and a narrow lower part, with the air guide cone symmetrically fixed at the bottom of the material guide cone. The frustum-shaped tube is narrower at the top and wider at the bottom, and several sets of air jets are evenly spaced on the upper surface of the frustum-shaped tube. The top of the outer distribution cylinder is located below the bottom of the guide cone; The connecting arm extends through the outer dispensing cylinder, and a brush is provided at the bottom of the connecting arm.

[0014] Preferably, the planetary gear assembly includes several sets of planetary gear carriers fixed at equal intervals on the outer side of the bottom of the outer rotating cylinder, and a first planetary gear and a second planetary gear movably connected to the bottom of the planetary gear carriers by a vertical rotating shaft; A fan is fixedly connected to a vertical rotating shaft that extends through the planetary gear carrier; The outer side of the sun gear is engaged with a first planetary gear and a second planetary gear, and the outer side of the second planetary gear is engaged with the inner tooth groove of the inner ring of the bottom cylinder. The upper surface of the bottom cylinder seat is provided with a first air inlet groove, the bottom of the separator tank is provided with a second air inlet groove, the second air inlet groove is located at the bottom of the inner material distribution cylinder, and the upper surface of the separator tank is provided with an air outlet mesh.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention integrates a primary crushing component, a secondary crushing component (lower crushing disc), a sorting component, and a pneumatic system into a single separation tank. After the food to be tested is fed into the hopper, the entire process—pre-extrusion, two-stage crushing, gas-solid separation, and collection—can be completed without the need for transfer. This integrated design not only significantly reduces the equipment's footprint and operational complexity but also avoids secondary contamination during material transfer, ensuring the purity of the test samples and improving the reliability of the test results.

[0016] This invention utilizes a planetary gear transmission structure (sun gear, planetary gear assembly) to achieve counter-rotation between the primary and secondary crushing components. The upper crushing protrusions of the upper crushing disc and the lower crushing protrusions of the lower crushing disc engage in opposite directions, increasing relative speed and resulting in stronger compression and grinding forces on hard foods (such as nuts) and more thorough shearing action on fibrous foods (such as vegetables). This allows for the crushing of food to a uniform particle size, completely solving the problem of incomplete crushing. Simultaneously, the continuous operation of the two-stage crushing system improves processing efficiency compared to single-stage crushing, meeting the needs of batch testing.

[0017] This invention employs a composite sorting mode of "centrifugal force + directional airflow": the sorting component generates centrifugal force as the outer drum rotates, causing the material to be evenly dispersed on the surface of the guide cone; simultaneously, the directional airflow ejected through the jet nozzle creates an upward blowing force on the material, carrying small, lightweight impurities into the outer sorting chamber, while larger impurities slide into the inner sorting chamber under the influence of gravity and centrifugal force, thus improving sorting efficiency. Furthermore, the brush at the bottom of the connecting arm rotates synchronously with the sorting component, cleaning the bottom wall of the chamber in real time, effectively preventing material accumulation and blockage of the inner and outer discharge pipes, and enhancing the continuous working capability of the device.

[0018] This invention employs a planetary gear system transmission consisting of a motor, a sun gear, and a planetary gear assembly. It can simultaneously drive the primary crushing component (forward rotation), the secondary crushing component (reverse rotation), and the sorting component (reverse rotation) with only one motor, thus reducing energy consumption compared to traditional multi-motor drive schemes. Attached Figure Description

[0019] Figure 1 This is an exploded structural diagram of the overall assembly of the present invention; Figure 2 This is a three-dimensional structural diagram of the entire invention; Figure 3 This is a three-dimensional structural diagram of the end cap of the present invention; Figure 4 This is an exploded structural diagram of the assembly of the primary crushing component, the lower crushing disc, and the sorting component of the present invention. Figure 5 This is a three-dimensional structural diagram of the primary crushing component of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the cross-sectional structure; Figure 7 This is a cross-sectional view of the sorting component of the present invention; Figure 8 For the present invention Figure 7 A schematic diagram of the three-dimensional structure from another perspective; Figure 9 This is a schematic diagram of the separation tank of the present invention; Figure 10This is a three-dimensional structural diagram of the driving component of the present invention; Figure 11 This is an exploded structural diagram of the driving component of the present invention; Figure 12 This is a three-dimensional structural diagram of the assembly of the outer rotating cylinder, fan, and planetary gear carrier of the present invention; Figure 13 For the present invention Figure 10 A schematic diagram of the three-dimensional structure from another perspective; Figure 14 This is a three-dimensional structural diagram of the assembly of the drive component, primary crushing component, lower crushing disc, and sorting component of the present invention. Figure 15 For the present invention Figure 14 A schematic diagram of the cross-sectional structure; Figure 16 This is a cross-sectional view of the overall structure of the present invention; Figure 17 For the present invention Figure 16 A frontal view of the structure.

[0020] In the diagram: 1. Feed hopper; 101. Extrusion pipe; 102. Material leakage chute; 2. End cap; 201. Annular groove; 3. Primary crushing assembly; 301. Upper crushing disc; 302. Inner groove; 303. Protruding column; 304. Spiral blade; 305. Lower chute; 306. Crushing plate; 307. Upper crushing protrusion; 308. Sealing cylinder seat; 309. First groove; 4. Lower crushing disc; 401. Lower crushing protrusion; 402. Second groove; 403. Drop hole; 5. Sorting Components; 501, intermediate fixed cylinder; 502, material discharge channel; 503, upper material discharge concave plate; 504, guide cone; 505, cone cylinder; 506, air jet; 507, outer material distribution cylinder; 508, connecting arm; 509, brush; 510, inner material distribution cylinder; 511, double cone; 512, air guide cone; 6, separation tank; 601, air outlet screen; 602, inner discharge pipe; 603, outer discharge pipe; 604, support leg; 605, second air inlet slot; 7, drive assembly; 701. Bottom cylinder seat; 702. Motor; 703. First air inlet slot; 704. Flange; 705. Internal gear groove; 706. Fan; 707. Bolt; 708. Outer rotating cylinder; 709. Limiting ring seat; 710. Second locking block; 711. Central rotating shaft; 712. First locking block; 713. Sun gear; 714. Planetary gear carrier; 715. Second planetary gear; 716. First planetary gear. Detailed Implementation

[0021] 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. Example

[0022] Please see Figures 1-17 The present invention provides a technical solution: A food detection and separation device includes a separation tank 6, with a support leg 604 at the bottom of the separation tank 6 and an end cap 2 at the top of the separation tank 6. The bottom of the end cap 2 is provided with an annular groove 201 that is sealed and fastened to the top of the separation tank 6.

[0023] The annular groove 201 at the bottom of the end cap 2 seals against the top of the separator 6, forming a reliable sealing structure. The advantages of this design are twofold: first, it ensures a stable flow field within the separator 6, preventing airflow leakage from the top and ensuring effective separation of materials of different particle sizes; second, it prevents food dust generated during crushing and sorting from spilling out, avoiding environmental pollution, and also prevents external impurities from entering the device and contaminating the food to be tested, ensuring the accuracy of subsequent test results.

[0024] A drive assembly 7 extending into the bottom of the separator tank 6 is installed. The drive assembly 7 includes a bottom cylinder seat 701 centrally fixed to the bottom of the separation tank 6, a sun gear 713 centrally disposed inside the bottom cylinder seat 701, a planetary gear assembly meshing with the sun gear 713 inside the bottom cylinder seat 701, and a motor 702 for driving the sun gear 713 to rotate installed at the lower end of the bottom cylinder seat 701. An outer rotating cylinder 708 is fixed in the middle of the planetary gear assembly. The outer rotating cylinder 708 extends into the separation tank 6. The central rotating shaft 711 fixed in the middle of the upper end of the sun gear 713 extends through the outer rotating cylinder 708.

[0025] The planetary gear assembly includes several sets of planetary gear carriers 714 fixed at equal intervals on the outer side of the bottom of the outer rotating cylinder 708, and a first planetary gear 716 and a second planetary gear 715 movably connected to the bottom of the planetary gear carriers 714 by a vertical rotating shaft. A vertical shaft fixed on the first planetary gear 716 extends through the planetary gear carrier 714 and is fixedly connected to a fan 706. The outer side of the sun gear 713 is engaged with the first planetary gear 716 and the second planetary gear 715, and the outer side of the second planetary gear 715 is engaged with the inner tooth groove 705 of the inner ring of the bottom cylinder seat 701. The upper surface of the bottom cylinder seat 701 is provided with a first air inlet groove 703, the bottom of the separator 6 is provided with a second air inlet groove 605, the second air inlet groove 605 is located at the bottom of the inner material distribution cylinder 510, and the upper surface of the separator 6 is provided with an air outlet mesh 601.

[0026] An inner material distribution cavity is formed between the inner material distribution cylinder 510 and the outer material distribution cylinder 507, and an outer material distribution cavity is formed between the outer material distribution cylinder 507 and the separation tank 6. The bottom of the separation tank 6 is provided with an inner discharge pipe 602 and an outer discharge pipe 603. The inner discharge pipe 602 is connected to the inner material distribution cavity, and the outer discharge pipe 603 is connected to the outer material distribution cavity. The bottom of the brush 509 is in contact with the bottom wall of both the inner and outer material distribution cavities.

[0027] The bottom cylinder seat 701 has a flange 704 on the outer side of its top, and the flange 704 is fixed to the bottom of the separator 6 by bolts 707.

[0028] Drive component 7 adopts a planetary gear transmission structure of "sun gear-planetary gear", combined with the single power input of motor 702, to achieve coordinated and reverse rotation of multiple components, with significant advantages: Highly efficient and stable power transmission: The meshing transmission of the sun gear 713, first planetary gear 716, second planetary gear 715, and internal gear 705 results in low torque transmission loss, ensuring stable rotational speeds of the primary crushing assembly 3, secondary crushing assembly, and sorting assembly 5, and preventing power fluctuations from affecting crushing and sorting effects. The bottom cylinder seat 701 provides fixed support for the planetary gear train, and the flange 704 is fixed to the bottom of the separation tank 6 by bolts 707, further enhancing the overall stability of the transmission structure.

[0029] Achieving reverse rotation improves crushing efficiency: The transmission characteristics of the planetary gear system cause the outer rotating drum 708 (driving the secondary crushing component and sorting component 5) and the central rotating shaft 711 (driving the primary crushing component 3) to rotate in opposite directions. The relative movement speed of the upper crushing protrusion 307 and the lower crushing protrusion 401 is increased, resulting in stronger shearing and grinding effects on food. This allows for thorough crushing of food in a shorter time, solving the problems of low efficiency and incomplete crushing in traditional unidirectional crushing.

[0030] Single power source, simplified structure: Three core working components can be driven simultaneously by a single motor 702, without the need for additional power units, which reduces the size and manufacturing cost of the device, while also reducing the complexity of multi-power source coordinated control.

[0031] The top of the drive assembly 7 is connected sequentially from top to bottom to the primary crushing assembly 3, the secondary crushing assembly, and the sorting assembly 5. The primary crushing component 3 is fixed to the top of the central rotating shaft 711, the secondary crushing component is fixed to the top of the outer rotating drum 708, and the sorting component 5 is sleeved and fixed to the outside of the outer rotating drum 708, with the bottom of the sorting component 5 resting on the bottom wall of the separation tank 6.

[0032] The primary crushing component 3 includes an upper crushing disc 301, a protruding column 303 centrally located at the upper end of the upper crushing disc 301, crushing plates 306 fixed at equal intervals between the upper surface of the upper crushing disc 301 and the protruding column 303, and spiral blades 304 provided on the upper surface of the protruding column 303. The upper surface of the upper crushing disc 301 is provided with an inner groove 302, the surface of the inner groove 302 is provided with a lower drop groove 305, and the lower end of the upper crushing disc 301 is provided with an upper crushing protrusion 307.

[0033] The bottom of the protruding post 303 is provided with a sleeve hole that fits onto the top of the central rotating shaft 711, and the inner wall of the sleeve hole is provided with a first slot 309. The first locking block 712 at the top of the central rotating shaft 711 is inserted into the corresponding first slot 309.

[0034] A sealing cylinder seat 308 is provided at the center of the lower end of the upper crushing disc 301, and the sealing cylinder seat 308 is sleeved on the outer side of the top of the outer rotating cylinder 708.

[0035] A limiting ring seat 709 is fixed on the upper part of the outer rotating cylinder 708, and several sets of second locking blocks 710 are provided at equal intervals between the upper end of the limiting ring seat 709 and the outer rotating cylinder 708. The secondary crushing component is a lower crushing disc 4. The upper surface of the lower crushing disc 4 is provided with a lower crushing protrusion 401 and a drop hole 403. The lower crushing disc 4 is located on a limiting ring seat 709, and the second locking block 710 is locked into the corresponding second locking groove 402 in the middle of the lower crushing disc 4.

[0036] The primary crushing component 3 is connected to the central rotating shaft 711 via a snap-fit ​​structure of "first snap-fit ​​block 712 - first snap-fit ​​groove 309". The secondary crushing component is connected to the outer rotating drum 708 via a snap-fit ​​structure of "second snap-fit ​​block 710 - second snap-fit ​​groove 402". This detachable rigid connection design has dual advantages: firstly, the snap-fit ​​structure ensures reliable torque transmission during rotation and avoids slippage; secondly, when the crushing component experiences wear (such as crushing protrusions or crushing plate wear), it can be quickly disassembled and replaced without disassembling the entire drive assembly, reducing maintenance costs and downtime. In addition, the sealing cylinder seat 308 at the lower end of the upper crushing disc 301 is fitted onto the outer side of the top of the outer rotating drum 708, which prevents crushed food debris from entering the transmission mechanism and extends the service life of the drive assembly.

[0037] The sorting assembly 5 includes a double cone 511, an intermediate fixing cylinder 501 fixed in the middle of the double cone 511, an upper material discharge concave plate 503 fixed after the upper part of the intermediate fixing cylinder 501 extends out of the double cone 511, an inner material distribution cylinder 510 connected to the bottom of the double cone 511 by a cone cylinder 505, and an outer material distribution cylinder 507 fixed to the outer side of the bottom of the inner material distribution cylinder 510 by a connecting arm 508. Several sets of material discharge channels 502 are provided at equal intervals at the connection between the upper material discharge concave plate 503 and the middle fixed cylinder 501; The double cone 511 includes a guide cone 504 with a narrow upper part and a wide lower part, and an air guide cone 512 with a wide upper part and a narrow lower part. The air guide cone 512 is symmetrically fixed at the bottom of the guide cone 504. The frustum tube 505 is narrow at the top and wide at the bottom, and several sets of air jets 506 are evenly spaced on the upper surface of the frustum tube 505. The top of the external feed cylinder 507 is located below the bottom of the guide cone 504; The connecting arm 508 extends through the outer dispensing cylinder 507, and a brush 509 is provided at the bottom of the connecting arm 508.

[0038] The sorting component 5 is fixed to the outer rotating cylinder 708 via a middle fixed cylinder 501, achieving synchronous rotation with the secondary crushing component. Its internal structure employs an integrated design: the upper feeding concave disc 503 ensures uniform material dispersion; the double cones 511 (guide cone 504 + air guide cone 512) guide the movement of material and airflow; the air jet 506 of the cone cylinder 505 enables directional airflow injection; and the inner and outer separating cylinders 510 and 507 form clearly defined separation chambers. This integrated connection ensures a continuous and smooth process from material falling, dispersing, sorting to collection, reducing material residue. Simultaneously, the bottom of the sorting component 5 rests on the bottom wall of the separating tank 6, with the outer rotating cylinder 708 providing upper positioning; this double support ensures concentricity during rotation, preventing a decrease in sorting accuracy due to shaking.

[0039] The connecting arm 508 fixes the outer distributing cylinder 507 and the inner distributing cylinder 510 to ensure that the two rotate synchronously. At the same time, the contact design between the brush 509 and the bottom wall of the chamber realizes "rotational sorting + synchronous cleaning", which effectively prevents material accumulation and blockage and improves the continuous working capacity of the device.

[0040] The top of the primary crushing component 3 extends into the feeding component in the middle of the end cover 2. The feeding component includes a feeding hopper 1 fixed in the middle of the upper end of the end cover 2 and an extrusion pipe 101 connected to the bottom of the feeding hopper 1. The bottom of the extrusion pipe 101 has circular and equally spaced leakage grooves 102. The top of the primary crushing component 3 extends into the extrusion tube 101. That is, the protruding column 303 and the spiral blade 304 on it extend into the extrusion tube 101.

[0041] The drive assembly 7 simultaneously drives the primary crushing assembly 3, the secondary crushing assembly, and the sorting assembly 5 to rotate. The primary crushing component 3 rotates to achieve primary crushing of the food to be tested in the feeding component. The primary crushing component 3 and the secondary crushing component rotate in opposite directions to jointly achieve secondary crushing of the food to be tested. When the food to be tested is broken and falls to the sorting component 5, the drive component 7 blows air into the sorting component 5, and the broken food to be tested is sorted by the blowing air.

[0042] The first air inlet sump 703, the second air inlet sump 605, the jet nozzle 506, and the air outlet 601 form a complete air path system, and the air path direction is precisely matched with the structure of the sorting component 5: the airflow flows upward from the bottom of the inner distribution cylinder 510, and directly acts on the sorting area of ​​the double cone 511 through the jet nozzle 506, forming a reasonable angle with the centrifugal motion direction of the material, which can blow the light material to the outer cavity of the distribution cylinder without interfering with the falling path of the heavy material, thus improving the sorting accuracy; the air outlet 601 is located at the top of the separator 6, ensuring smooth airflow discharge while preventing material loss with the airflow, thus achieving effective gas-solid separation.

[0043] Specifically, when using it: This food testing and separation device operates on a core workflow of "crushing-sorting-separation and collection." Powered by the drive assembly 7, it coordinates the primary crushing assembly 3, the secondary crushing assembly (lower crushing disc 4), and the sorting assembly 5, working in conjunction with the pneumatic system to achieve efficient food processing. The specific process is as follows: 1. Feeding and Pre-extrusion Stage: The food to be tested is fed into the feeding hopper 1 of the feeding assembly and guided and conveyed through the extrusion tube 101 at the bottom of the feeding hopper 1. At this time, the protruding column 303 and the spiral blades 304 on its surface in the primary crushing assembly 3 extend into the extrusion tube 101 and rotate synchronously under the drive assembly 7. The rotation of the spiral blades 304 not only plays a conveying role, but also performs preliminary extrusion on the food, making the food in close contact and preparing for subsequent crushing. The extruded food falls evenly into the upper crushing disc 301 of the primary crushing assembly 3 through the material discharge trough 102 at the bottom of the extrusion tube 101.

[0044] 2. Two-stage fracturing: The crushing process is divided into primary crushing and secondary crushing. The drive component 7 achieves reverse rotation of the two stages through a special transmission structure, thereby improving crushing efficiency and effect. Primary crushing: After the motor 702 starts, it drives the sun gear 713 to rotate. The sun gear 713 drives the primary crushing assembly 3 to rotate as a whole through the central shaft 711 (the first locking block 712 at the top of the central shaft 711 engages with the first locking groove 309 of the protruding column 303 to achieve torque transmission). When the upper crushing disc 301 rotates, the crushing plate 306 at its upper end shears and impacts the food falling into the inner groove 302. The food that has been initially crushed falls into the lower groove 305 on the surface of the inner groove 302 and falls below the upper crushing disc 301.

[0045] Breaking again: As the sun gear 713 rotates, it drives the first planetary gear 716, which meshes with it, to rotate. The first planetary gear 716 is linked to the second planetary gear 715 to rotate. The second planetary gear 715 meshes with the inner tooth groove 705 of the inner ring of the bottom cylinder seat 701, causing the planetary gear carrier 714 to drive the outer rotating cylinder 708 to rotate in the opposite direction to the sun gear 713.

[0046] The outer rotating drum 708 drives the secondary crushing component (lower crushing disc 4) to rotate in the opposite direction via the second locking block 710 at the top (which engages with the second locking groove 402 of the lower crushing disc 4). The upper crushing protrusion 307 at the lower end of the upper crushing disc 301 engages with the lower crushing protrusion 401 at the upper end of the lower crushing disc 4 in the opposite direction, subjecting the falling food to secondary compression and grinding. The thoroughly crushed food falls into the sorting component 5 below through the falling hole 403 of the lower crushing disc 4.

[0047] 3. Gas-solid separation and collection stage: After being crushed, the food enters the sorting component 5, where it is sorted into different particle sizes by mechanical rotation and airflow, and finally collected through different discharge channels. Airflow supply: The sun gear 713 drives the first planetary gear 716 and the fan 706 on top of the first planetary gear 716 to rotate at high speed, forming a negative pressure in the bottom cylinder 701. The external air source enters the device through the first air inlet groove 703 on the upper part of the bottom cylinder 701, enters the bottom of the inner material distribution cylinder 510 through the second air inlet groove 605 at the bottom of the separator 6, and then the airflow flows upward and is evenly sprayed to the sorting area through the jet nozzle 506 on the upper part of the truncated cone cylinder 505, and finally discharged through the air outlet mesh 601 on the upper part of the separator 6.

[0048] Sorting process: The outer rotating drum 708 drives the sorting component 5 to rotate as a whole (the middle fixed drum 501 is sleeved and fixed on the outside of the outer rotating drum 708). The crushed food falls into the upper feeding concave plate 503 and is evenly distributed to the surface of the guide cone 504 of the double cone 511 through the feeding channel 502.

[0049] Air ejected through the jet nozzle 506 is blown through the surface of the air guide cone 512 to the bottom of the material guide cone 504. Under the combined action of centrifugal force and airflow, the small-sized light material falling through the material guide cone 504 is blown upward by the airflow and falls into the material distribution outer cavity between the outer material distribution cylinder 507 and the separation tank 6. Larger, heavier materials slide down the guide cone 504 under the action of gravity and enter the inner distribution cavity between the inner distribution cylinder 510 and the outer distribution cylinder 507.

[0050] Separation and Collection: Material in the inner separation chamber is discharged through the inner discharge pipe 602, and material in the outer separation chamber is discharged through the outer discharge pipe 603, realizing the separation and collection of food materials of different particle sizes, which facilitates subsequent testing. At the same time, the brush 509 at the bottom of the connecting arm 508 rotates with the sorting component and contacts the bottom wall of the inner and outer separation chambers, which can prevent material from accumulating and blocking the discharge channel.

[0051] The outer diameters of the upper crushing disc 301, the lower crushing disc 4, and the upper material discharge concave disc 503 are equal to the inner diameter of the separation tank 6.

[0052] In the inner material distribution chamber, larger-sized heavy materials can be discharged through the inner discharge pipe 602 and then fed back into the feeding hopper 1 for further crushing.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A food detection and separation device, comprising a separation tank (6), characterized in that: The separation tank (6) is provided with an end cap (2) at the top and a drive assembly (7) extending into the bottom of the separation tank (6). The top of the drive assembly (7) is connected to a primary crushing assembly (3), a secondary crushing assembly, and a sorting assembly (5) from top to bottom. The top of the primary crushing component (3) extends into the feeding component in the middle of the end cap (2), and the driving component (7) simultaneously drives the primary crushing component (3), the secondary crushing component and the sorting component (5) to rotate. The primary crushing component (3) rotates to achieve primary crushing of the food to be tested in the feeding component. The primary crushing component (3) and the secondary crushing component rotate in opposite directions to jointly achieve secondary crushing of the food to be tested. When the food to be tested is broken and falls to the sorting component (5), the driving component (7) blows air into the sorting component (5), and the broken food to be tested is sorted under the blowing of the air.

2. The food detection and separation device according to claim 1, characterized in that: The bottom of the end cap (2) is provided with an annular groove (201) that seals the top of the separation tank (6).

3. The food detection and separation device according to claim 1, characterized in that: The feeding assembly includes a feeding hopper (1) fixed at the middle of the upper end of the end cap (2) and an extrusion tube (101) connected to the bottom of the feeding hopper (1). The bottom of the extrusion tube (101) has a circular and equally spaced material leakage groove (102). The top of the primary crushing component (3) extends into the extrusion tube (101) at the center.

4. The food detection and separation device according to claim 1, characterized in that: The drive assembly (7) includes a bottom cylinder (701) fixed centrally at the bottom of the separation tank (6), a sun gear (713) centrally disposed inside the bottom cylinder (701), a planetary gear assembly meshing with the sun gear (713) inside the bottom cylinder (701), and a motor (702) for driving the sun gear (713) to rotate installed at the lower end of the bottom cylinder (701). An outer rotating cylinder (708) is fixed in the middle of the planetary gear assembly. The outer rotating cylinder (708) extends into the separation tank (6). The central rotating shaft (711) fixed in the middle of the upper end of the sun gear (713) extends through the outer rotating cylinder (708). The primary crushing component (3) is fixed on the top of the central rotating shaft (711), the secondary crushing component is fixed on the top of the outer rotating cylinder (708), the sorting component (5) is sleeved and fixed on the outside of the outer rotating cylinder (708), and the bottom of the sorting component (5) sits on the bottom wall of the separation tank (6).

5. The food detection and separation device according to claim 4, characterized in that: The primary crushing component (3) includes an upper crushing disc (301), a protruding column (303) centrally located at the upper end of the upper crushing disc (301), a crushing plate (306) fixed at equal intervals between the upper surface of the upper crushing disc (301) and the protruding column (303), and a spiral blade (304) provided on the upper surface of the protruding column (303). The upper surface of the upper crushing disc (301) is provided with an inner groove (302), the surface of the inner groove (302) is provided with a lower drop groove (305), and the lower end of the upper crushing disc (301) is provided with an upper crushing protrusion (307).

6. The food detection and separation device according to claim 5, characterized in that: The bottom of the protruding column (303) is provided with a sleeve hole that fits onto the top of the central rotating shaft (711), and the inner wall of the sleeve hole is provided with a first slot (309). The first locking block (712) at the top of the central rotating shaft (711) is inserted into the corresponding first slot (309).

7. The food detection and separation device according to claim 5, characterized in that: The upper crushing disc (301) is provided with a sealing cylinder seat (308) at the center of its lower end, and the sealing cylinder seat (308) is sleeved on the outer side of the top of the outer rotating cylinder (708).

8. The food detection and separation device according to claim 4, characterized in that: The upper part of the outer rotating cylinder (708) is fixed with a limiting ring seat (709), and a number of second locking blocks (710) are provided at equal intervals between the upper end of the limiting ring seat (709) and the outer rotating cylinder (708). The secondary crushing component is a lower crushing disc (4). The upper surface of the lower crushing disc (4) is provided with a lower crushing protrusion (401) and a drop hole (403). The lower crushing disc (4) sits on a limiting ring seat (709), and the second locking block (710) is locked into the corresponding second locking groove (402) in the middle of the lower crushing disc (4).

9. A food detection and separation device according to claim 4, characterized in that: The sorting assembly (5) includes a double cone (511), an intermediate fixing cylinder (501) fixed in the middle of the double cone (511), an upper material discharge concave plate (503) fixed after the upper part of the intermediate fixing cylinder (501) extends out of the double cone (511), an inner material distribution cylinder (510) connected to the bottom of the double cone (511) by a cone cylinder (505), and an outer material distribution cylinder (507) fixed to the outer side of the bottom of the inner material distribution cylinder (510) by a connecting arm (508). The upper material discharge concave plate (503) and the middle fixed cylinder (501) are provided with several sets of material discharge channels (502) at equal intervals. The double cone (511) includes a guide cone (504) with a narrow upper part and a wide lower part, and an air guide cone (512) with a wide upper part and a narrow lower part. The air guide cone (512) is symmetrically fixed at the bottom of the guide cone (504). The frustum tube (505) is narrow at the top and wide at the bottom, and a number of air jets (506) are provided at equal intervals on the upper surface of the frustum tube (505). The top of the outer distribution cylinder (507) is located below the bottom of the guide cone (504); The connecting arm (508) extends through the outer dispensing cylinder (507), and a brush (509) is provided at the bottom of the connecting arm (508).

10. A food detection and separation device according to claim 9, characterized in that: The planetary gear assembly includes several sets of planetary gear carriers (714) fixed at equal intervals on the outer side of the bottom of the outer rotating cylinder (708), and a first planetary gear (716) and a second planetary gear (715) movably connected to the bottom of the planetary gear carriers (714) by a vertical rotating shaft. A fan (706) is fixedly connected to a vertical shaft that extends through the planetary gear carrier (714) and is fixedly connected to it. The outer side of the sun gear (713) is engaged with the first planetary gear (716) and the second planetary gear (715), and the outer side of the second planetary gear (715) is engaged with the inner tooth groove (705) of the inner ring of the bottom cylinder (701); The upper surface of the bottom cylinder seat (701) is provided with a first air inlet groove (703), the bottom of the separator (6) is provided with a second air inlet groove (605), the second air inlet groove (605) is located at the bottom of the inner material distribution cylinder (510), and the upper surface of the separator (6) is provided with an air outlet mesh (601).

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