A freeze-dried material airflow-assisted color selection separation device

Abstract

The present application relates to freeze-dried material sorting processing technical field, disclose a kind of freeze-dried material airflow auxiliary color selection separation device, including separation support, material conveying equipment and visual detection system are provided on separation support, color selection impurity removal control cavity is fixed on separation support, inside by impurity temporary storage chamber and switching adjustment chamber are composed, switching adjustment chamber bottom is provided with color selection notch, arc air-blowing plate is fixedly installed in switching adjustment chamber bottom near color selection notch, and air outlet is bent to impurity temporary storage chamber place;Under the detection of visual detection system, telescopic adsorption unit is regularly elongated and passes through color selection notch and adsorbs the impurity in material, extends and discharges residue when rotating to the direction of impurity temporary storage chamber, arc air-blowing plate synchronously blows and collects impurity and sweeps clean telescopic adsorption unit;The present application can reduce the loss of qualified freeze-dried material, avoid secondary pollution of impurity, ensure that adsorption performance is stable, improve the efficiency of color selection separation operation and finished product qualification rate.

Description

Technical Field

[0001] This invention relates to the field of freeze-dried material sorting and processing technology, specifically to a freeze-dried material airflow-assisted color sorting and separation device. Background Technology

[0002] Freeze-dried materials are widely used in food processing and pharmaceutical preparation. During the freeze-drying and subsequent processing, discolored particles, broken debris, and foreign impurities are easily generated. Color sorting equipment is needed to remove these impurities and ensure the quality of the finished product. Airflow-assisted color sorting is a core sorting device in the post-processing of freeze-dried materials. It uses visual inspection technology and airflow to automatically separate qualified materials from impurities. It is suitable for the lightweight and fragile characteristics of freeze-dried materials and is widely used in large-scale freeze-dried material production lines.

[0003] Existing airflow-assisted color sorting and separation devices for freeze-dried materials mostly use direct air blowing to remove impurities. During operation, it is difficult to precisely control the airflow range, which can easily blow away qualified freeze-dried materials at the same time, resulting in high material loss. On the other hand, equipment using adsorption-type separation cannot simultaneously achieve directional collection of impurities and self-cleaning of the adsorption end during the slag discharge process. This can easily lead to problems such as light impurities falling back and contaminating the material, and residual dust on the adsorption end surface causing a decrease in adsorption force. It is difficult to simultaneously meet the requirements of low loss and stability of continuous operation in freeze-dried material separation. Therefore, in view of the above situation, there is an urgent need to develop an airflow-assisted color sorting and separation device for freeze-dried materials to overcome the shortcomings in current practical applications. Summary of the Invention

[0004] The purpose of this invention is to provide an airflow-assisted color sorting and separation device for freeze-dried materials to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A freeze-dried material airflow-assisted color sorting and separation device includes a separation support, a material conveying device mounted on the separation support, a vision inspection system fixedly installed on the separation support, a color sorting and impurity removal control chamber, an arc-shaped blowing plate, and a color sorting telescopic adsorption assembly. The color sorting and impurity removal control chamber is fixedly installed on the separation bracket. Its interior consists of an impurity temporary storage chamber and a switching adjustment chamber. A color sorting slot is opened directly below the switching adjustment chamber, and the color sorting slot is located directly above the material conveying equipment. The arc-shaped blowing plate is fixedly installed at the bottom of the switching adjustment cavity and is located near the color sorting slot. The arc-shaped blowing plate is an arc-shaped structure with the air outlet bent towards the impurity storage cavity. The color sorting telescopic adsorption assembly is disposed on the color sorting and impurity removal control cavity, including a rotary drive unit and multiple telescopic adsorption units. The rotary drive unit is connected to the separation bracket, and the multiple telescopic adsorption units are all located in the switching adjustment cavity and are all connected to the rotary drive unit. Under the detection of the vision inspection system, the telescopic adsorption unit extends through the color sorting slot at regular intervals to adsorb and separate impurities on the material conveying equipment; When the rotary drive unit drives the telescopic adsorption unit to rotate toward the impurity temporary storage chamber, the telescopic adsorption unit extends to discharge slag, and the arc-shaped blowing plate simultaneously blows and collects the impurities in a directional manner, and cleans the telescopic adsorption unit.

[0006] As a further aspect of the present invention: the rotation drive unit includes: A conversion drive motor is fixedly mounted on the color sorting and impurity removal control cavity; And a rotating shaft, which is rotatably mounted in the switching adjustment cavity, and one end of the rotating shaft is fixedly connected to the output end of the conversion drive motor; The rotating shaft has a suction hole, which is connected to the telescopic adsorption unit via a flexible hose. The suction hole is also connected to an external suction device via an adapter, which is used to generate negative pressure in the telescopic adsorption unit and adsorb impurities in the material.

[0007] As a further aspect of the present invention: the stretchable adsorption unit includes: The telescopic components are multiple, and the multiple telescopic components are evenly distributed on the rotating shaft to form multiple circumferential adsorption stations. And a cleaning nozzle, which is fixedly connected to the telescopic end of the telescopic member and communicates with the suction hole; Under the detection of the vision inspection system, multiple circumferential adsorption stations are switched through the extension, retraction and rotation of multiple impurity removal nozzles, and impurities are sorted and collected during the station switching process.

[0008] As a further aspect of the present invention, it also includes: a second cleaning bracket, which is fixedly installed in the color sorting and impurity removal control cavity and positioned close to the impurity temporary storage cavity; And a second brush, which is fixedly installed on the other end of the cleaning bracket and is detachably connected to the telescopic adsorption unit; Wherein, the projected length of the second brush from the impurity storage cavity is less than the length of the arc-shaped blower from the impurity storage cavity. During the rotation of the telescopic adsorption unit, the residual impurities on the telescopic adsorption unit are scraped and cleaned by adjusting its own telescopic length.

[0009] As a further aspect of the present invention: the material conveying equipment includes a sorting conveyor belt, which is located below the vision inspection system, and the sorting conveyor belt is used to carry freeze-dried materials forward for color sorting and separation. The material conveying equipment also includes a first drive roller and a second drive roller, both of which are rotatably connected to the separation bracket, and the diameter of the first drive roller is larger than the diameter of the second drive roller. The sorting conveyor belt is mounted on the first drive roller and the second drive roller.

[0010] As a further aspect of the present invention, it also includes: a guide roller one and a guide roller two, both of which are rotatably connected to the separating bracket and connected to the sorting conveyor belt; The guide roller 1 and guide roller 2 are arranged longitudinally from high to low, and the distance between the guide roller 2 and the drive roller 1 is less than the distance between the guide roller 1 and the drive roller 1.

[0011] As a further aspect of the present invention: the first guide roller and the second guide roller divide the upper plane of the sorting conveyor belt into an auxiliary sorting step one and an auxiliary sorting step two of different heights; The visual inspection system is located on the first auxiliary sorting step, and the color sorting and impurity removal control cavity is located on the second auxiliary sorting step. A drop sorting section is formed between the first auxiliary sorting step and the second auxiliary sorting step, and a flow disturbance component is provided at the drop sorting section; During the descent of the freeze-dried material and impurities at the drop sorting section, the turbulence component blows the impurities covering the bottom of the freeze-dried material to the upper surface of the freeze-dried material on the second auxiliary sorting step, so as to achieve precise separation of impurities by the subsequent color sorting and impurity removal control chamber.

[0012] As a further aspect of the present invention: the turbulence component includes: An air intake pipe is rotatably connected to the separation bracket and is connected to an external air source via an adapter. The sorting auxiliary blowing cylinder is fixedly installed in the middle of the air inlet pipe and located at the drop sorting section; The system includes multiple air holes, which are evenly distributed on the sorting auxiliary blowing cylinder and connected to the air inlet pipe.

[0013] As a further aspect of the present invention: the sorting auxiliary blowing cylinder is disposed near the guide roller and close to the surface of the sorting conveyor belt, so as to blow and clean the surface of the sorting conveyor belt when the sorting conveyor belt is in a state of separation from the freeze-dried material at the drop sorting section.

[0014] As a further aspect of the present invention, it also includes: two annular airbags, the two annular airbags being located at opposite ends of the sorting auxiliary blowing cylinder; An electromagnetic valve is provided between the annular airbag and the sorting auxiliary blowing cylinder, and the electromagnetic valve is connected to the visual inspection system. Under the control of the solenoid valve, in the material section containing impurities, the sorting auxiliary blowing cylinder is in the blowing working state, the annular airbag is contracted, and the sorting auxiliary blowing cylinder is stationary. For material sections without impurities, the sorting auxiliary blowing cylinder is in a stopped state, the annular airbag expands and comes into contact with the sorting conveyor belt, and the sorting auxiliary blowing cylinder rotates; The cleaning bracket is fixedly connected to the separation bracket, and a brush is detachably installed on the cleaning bracket. The brush abuts against the sorting auxiliary blowing cylinder and is used to clean the surface of the sorting auxiliary blowing cylinder when the sorting auxiliary blowing cylinder rotates.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The sorting method, which uses a telescopic adsorption unit to adsorb impurities at specific points, can significantly reduce the loss rate of qualified freeze-dried materials compared to traditional air-blowing color sorting, and is suitable for the fragile characteristics of freeze-dried materials. With the station switching of the rotary drive unit and the directional blowing of the arc-shaped blowing plate, the directional collection of impurities into the impurity storage chamber and the cleaning of the telescopic adsorption unit can be completed simultaneously, avoiding secondary pollution caused by the scattering and falling of light impurities, ensuring long-term stable adsorption force, realizing continuous and high-precision color sorting and separation operations, and improving sorting efficiency and finished product qualification rate. Multiple sets of circumferentially evenly distributed telescopic adsorption units form a multi-station circulating layout, which can realize the parallel operation of adsorption, slag discharge and cleaning processes, improve the equipment sorting cycle, and adapt to the capacity requirements of high-speed production lines; combined with the mechanical scraping of the second brush and the airflow dust removal of the arc-shaped blowing plate, it can effectively remove impurities and fine dust adhering to the impurity removal nozzle, reducing the frequency of equipment maintenance. By forming auxiliary sorting steps one and two at different heights through guide roller one and guide roller two, the drop sorting section between the two steps, together with the turbulent airflow of the sorting auxiliary blowing cylinder, can break up the clumps of material during the material falling and turn the impurities covering the bottom of the freeze-dried material to the upper surface of the material, eliminating the detection blind spot of single-sided color sorting and greatly improving the identification and removal rate of impurities; at the same time, the sorting auxiliary blowing cylinder can simultaneously blow and clean the surface of the rotating sorting conveyor belt, avoiding secondary pollution caused by material debris as the conveyor belt rotates; By leveraging the linkage control of the vision inspection system and the solenoid valve, the intelligent start and stop of the sorting auxiliary blowing cylinder is achieved. The blowing operation is only activated in the material section containing impurities, which significantly reduces the consumption of compressed air and saves equipment operating costs. In the material section without impurities, the cylinder is driven to rotate by the expansion of the annular air bladder and the sorting conveyor belt. The cylinder is then rotated by the power of the conveyor belt, and the brushes complete the self-cleaning of the cylinder surface and air pores without dead angles. No additional independent cleaning drive components are required. This ensures the long-term uniform and stable flow of turbulent air while taking into account the equipment operating efficiency and energy consumption control. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the separation stent in an embodiment of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the sorting conveyor belt in an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram showing the distribution of auxiliary sorting step one and auxiliary sorting step two in an embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the structure of the drop sorting section in an embodiment of the present invention.

[0020] Figure 5 This is a three-dimensional structural diagram of the visual inspection system in an embodiment of the present invention.

[0021] Figure 6 This is a three-dimensional structural diagram of the sorting auxiliary blowing cylinder in an embodiment of the present invention.

[0022] Figure 7 This is a three-dimensional structural diagram of the color sorting and impurity removal control cavity in an embodiment of the present invention.

[0023] Figure 8 This is a partial cross-sectional view of the color sorting and impurity removal control cavity in an embodiment of the present invention.

[0024] Figure 9 This is a schematic diagram of the installation position of the color sorting slot in an embodiment of the present invention.

[0025] Figure 10This is a schematic diagram of the front sectional view of the arc-shaped blower plate in an embodiment of the present invention.

[0026] In the diagram: 1-Separation bracket, 2-Sorting conveyor belt, 3-Color sorting and impurity removal control chamber, 4-Vision inspection system, 5-Sorting auxiliary blowing cylinder, 6-Drive roller one, 7-Guide roller one, 8-Guide roller two, 9-Cleaning bracket one, 10-Conversion drive motor, 11-Drive roller two, 12-Air inlet pipe, 13-Auxiliary sorting step one, 14-Auxiliary sorting step two, 15-Drop sorting section, 16-V-shaped guide block, 17-Vision inspection area, 18-Air hole, 19-Brush one, 20-Annular airbag, 21-Suction hole, 22-Slag discharge port, 23-Rotating shaft, 24-Telescopic component, 25-Impurity removal suction nozzle, 26-Cleaning bracket two, 27-Brush two, 28-Impurity temporary storage chamber, 29-Arc-shaped blowing plate, 30-Switching adjustment chamber, 31-Color sorting slot. Detailed Implementation

[0027] 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.

[0028] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0029] Please see Figures 1-10 The present invention provides an airflow-assisted color sorting and separation device for freeze-dried materials, comprising a separation support 1, a material conveying device mounted on the separation support 1, and a vision inspection system 4 fixedly mounted on the separation support 1, and further comprising: Color sorting and impurity removal control chamber 3 is fixedly installed on the separation bracket 1. The color sorting and impurity removal control chamber 3 is composed of an impurity temporary storage chamber 28 and a switching adjustment chamber 30. A color sorting slot 31 is opened directly below the switching adjustment chamber 30. The color sorting slot 31 is located directly above the material conveying equipment. The arc-shaped blowing plate 29 is fixedly installed at the bottom of the switching adjustment cavity 30 and is located near the color sorting slot 31. The arc-shaped blowing plate 29 is an arc-shaped structure whose air outlet bends toward the impurity temporary storage cavity 28. And a color sorting telescopic adsorption assembly, which is located on the color sorting and impurity removal control cavity 3, wherein the color sorting telescopic adsorption assembly includes a rotary drive unit and multiple telescopic adsorption units; The rotary drive unit is connected to the separation bracket 1, and the multiple telescopic adsorption units are all located in the switching adjustment cavity 30 and are all connected to the rotary drive unit. Under the detection of the visual inspection system 4, the telescopic adsorption unit is used to extend through the color sorting slot 31 at regular intervals and adsorb and separate impurities on the material conveying equipment. When the rotary drive unit drives the telescopic adsorption unit to rotate toward the impurity storage chamber 28, the telescopic adsorption unit extends to discharge slag. At the same time, the arc-shaped blower plate 29 blows and collects impurities and cleans the telescopic adsorption unit.

[0030] When this device is working, the freeze-dried material is carried by the material conveying equipment and conveyed forward at a uniform speed. When the material moves to the detection area of ​​the vision inspection system 4, the vision inspection system 4 continuously acquires images of the material surface (wherein, a V-shaped guide block 16 is set on one side of the vision inspection system 4 to guide and flatten the material entering the vision inspection area 17). The image processing algorithm identifies unqualified components such as discolored impurities and broken particles, and transmits the location information and time information of the impurities to the equipment control system. When the material carrying the target impurities moves directly below the color sorting and impurity removal control chamber 3 (which can also be equipped with a visual inspection device to accurately locate the impurities), the telescopic adsorption unit in the switching adjustment chamber 30, facing the material conveying equipment, begins its extension action. Its end passes through the color sorting slot 31 and approaches the surface of the material conveying equipment, precisely capturing the impurities at the corresponding location through negative pressure adsorption. After completing a single adsorption operation, the telescopic adsorption unit retracts into the switching adjustment chamber 30. Subsequently, the rotation drive unit receives a control signal and starts, driving multiple sets of telescopic adsorption units to rotate circumferentially. During rotation, the station with adsorbed impurities is switched to face the impurity temporary storage chamber 28. At this point, the telescopic adsorption unit of this station extends again, and the negative pressure passage is disconnected. The adsorbed impurities detach from the adsorption end under their own weight. At the same time, the arc-shaped blower plate 29 is activated (the air passage on the arc-shaped blower plate 29 is connected to the external air source). A directional airflow is blown out along the arc-shaped air outlet that bends towards the impurity storage chamber 28. On the one hand, the detached impurities are directionally blown into the impurity storage chamber 28 for collection, and then discharged through the slag discharge port 22 to prevent light impurities from drifting back to the material layer and causing secondary pollution. On the other hand, the airflow thoroughly sweeps the adsorption end face of the telescopic adsorption unit to remove the fine freeze-dried dust and debris remaining on the end face, ensuring the stability of the adsorption force of subsequent adsorption stations.

[0031] This integrated structure of adsorption-rotation switching-slag discharge self-cleaning significantly reduces the loss rate of qualified materials compared to traditional air-blowing color sorting, is suitable for the fragile characteristics of freeze-dried materials, and simultaneously achieves continuous, high-precision color sorting and separation operations, improving sorting efficiency and finished product qualification rate. In one embodiment of the present invention, please refer to Figures 1-10 The rotation drive unit includes: A conversion drive motor 10 is fixedly mounted on the color sorting and impurity removal control cavity 3; And a rotating shaft 23, which is rotatably mounted in the switching adjustment cavity 30, and one end of the rotating shaft 23 is fixedly connected to the output end of the conversion drive motor 10; The rotating shaft 23 has a suction hole 21, which is connected to the telescopic adsorption unit through a flexible tube and is also connected to an external suction device through an adapter. This allows the telescopic adsorption unit to generate negative pressure and adsorb impurities in the material.

[0032] The stretchable adsorption unit includes: Telescopic component 24, there are multiple telescopic components 24, and the multiple telescopic components 24 are evenly distributed on the rotating shaft 23 to form multiple circumferential adsorption stations; And a cleaning nozzle 25, which is fixedly connected to the telescopic end of the telescopic member 24 and communicates with the suction hole 21; Under the detection of the vision inspection system 4, multiple circumferential adsorption stations are switched through the extension, retraction and rotation of multiple impurity removal nozzles 25, and impurities are sorted and collected during the station switching process.

[0033] Please see Figures 8-10 It also includes: a second cleaning bracket 26, which is fixedly installed in the color sorting and impurity removal control cavity 3 and is located near the impurity temporary storage cavity 28; And a second brush 27, which is fixedly installed on the other end of the second cleaning bracket 26 and is detachably connected to the telescopic adsorption unit; Wherein, the projected length of the second brush 27 from the impurity storage cavity 28 is less than the length of the arc-shaped blower plate 29 from the impurity storage cavity 28. During the rotation of the telescopic adsorption unit, the residual impurities on the telescopic adsorption unit are scraped and cleaned by adjusting its own telescopic length.

[0034] In this embodiment, the conversion drive motor 10 is fixedly installed on the side wall of the color sorting and impurity removal control cavity 3. After receiving the signal from the control system, it starts and drives the rotating shaft 23 to rotate in the switching adjustment cavity 30. The suction hole 21 inside the rotating shaft 23 is connected to the external suction equipment through a rotary joint. The external suction equipment can be a vacuum generator or a negative pressure fan to provide a stable negative pressure for the system. The negative pressure airflow is conducted to the telescopic adsorption unit of each station through a hose. The telescopic component 24 can be a conventional linear drive element in the art, such as a micro cylinder or an electric push rod. Multiple sets of telescopic components 24 are evenly distributed along the circumference of the rotating shaft 23 to form multiple independent adsorption stations. The impurity removal nozzle 25 is fixedly installed at the telescopic end of the telescopic component 24 and connected to the air passage. When a workstation rotates to the adsorption position directly facing the material conveying equipment, the corresponding telescopic component 24 extends, pushing the impurity removal nozzle 25 downwards to the set working interval. Through negative pressure, the impurities identified and located by the vision inspection system 4 are adsorbed onto the end face of the impurity removal nozzle 25. After adsorption is complete, the telescopic component 24 drives the impurity removal nozzle 25 to retract and reset. As the rotating shaft 23 rotates, the impurity-laden nozzle 25 rotates to the slag discharge position facing the impurity temporary storage chamber 28. At this time, the telescopic component 24 extends again (through the timing control of extension-retraction-extension-retraction, the actual...). The change in position of the cleaning nozzle 25 completes the thorough removal of impurities at one workstation and the thorough cleaning of the cleaning nozzle 25. The negative pressure in the air path is released, and the impurities are removed from the nozzle end face. At the same time, during the rotation and extension process, the outer wall and end face of the cleaning nozzle 25 rub against the brush 27 at the end of the cleaning bracket 26. The bristles of the brush 27 can extend into the adsorption micropores of the cleaning nozzle 25 to scrape off the adhering fibrous and flaky impurities. Combined with the airflow of the arc-shaped blower plate 29, a dual cleaning effect of mechanical scraping and airflow dust removal is achieved.

[0035] The multi-station circulating layout enables parallel operation of adsorption, slag removal and cleaning processes, significantly improving the equipment's sorting cycle time and adapting to the capacity requirements of high-speed production lines. At the same time, the telescopic structure allows for precise adjustment of the nozzle height, preventing damage to freeze-dried materials from bumps. The dual cleaning structure ensures the adsorption stability of the nozzle during long-term operation and reduces the frequency of equipment maintenance.

[0036] In one embodiment of the present invention, please refer to Figures 1-5 The material conveying equipment includes a sorting conveyor belt 2, which is located below the vision inspection system 4, and is used to carry the freeze-dried material forward for color sorting and separation. The material conveying equipment also includes a first drive roller 6 and a second drive roller 11, both of which are rotatably connected to the separation bracket 1, and the diameter of the first drive roller 6 is larger than the diameter of the second drive roller 11. The sorting conveyor belt 2 is mounted on the drive roller 6 and the drive roller 11.

[0037] In this material conveying equipment, drive roller 6 is the active roller and is connected to the external drive device. Drive roller 11 is the driven roller. The two together tension and support the sorting conveyor belt 2. The surfaces of drive roller 6 and drive roller 11 can be provided with anti-slip rubber coating to increase the friction with the sorting conveyor belt 2, avoid slippage during the operation of the conveyor belt, and ensure that the material conveying speed is accurately synchronized with the acquisition frame rate of the vision inspection system 4 and the adsorption rhythm of the color sorting and impurity removal control cavity 3.

[0038] In one embodiment of the present invention, please refer to Figures 1-6 It also includes: a guide roller 7 and a guide roller 8, both of which are rotatably connected to the separation bracket 1 and connected to the sorting conveyor belt 2; The guide roller 7 and the guide roller 8 are arranged longitudinally from high to low, and the distance between the guide roller 8 and the drive roller 6 is less than the distance between the guide roller 7 and the drive roller 6.

[0039] The guide roller 7 and guide roller 8 divide the upper plane of the sorting conveyor belt 2 into auxiliary sorting steps 13 and 14 of different heights. The visual inspection system 4 is located on the auxiliary sorting step 13, and the color sorting and impurity removal control cavity 3 is located on the auxiliary sorting step 14. A drop sorting section 15 is formed between the first auxiliary sorting step 13 and the second auxiliary sorting step 14, and a flow disturbance component is provided at the drop sorting section 15. During the descent of the freeze-dried material and impurities at the drop sorting section 15, the turbulence component blows the impurities covering the bottom of the freeze-dried material to the upper surface of the freeze-dried material on the auxiliary sorting step 14, so as to achieve the precise separation of impurities by the subsequent color sorting and impurity removal control chamber 3.

[0040] The turbulence-disrupting component includes: Air intake pipe 12, which is rotatably connected to the separation bracket 1 and connected to an external air source through an adapter; The sorting auxiliary blowing cylinder 5 is fixedly installed in the middle of the air inlet pipe 12 and located at the drop sorting section 15. And air holes 18, there are multiple air holes 18, the multiple air holes 18 are evenly opened on the sorting auxiliary blowing cylinder 5, and all of them are connected to the air inlet pipe 12.

[0041] The sorting auxiliary blowing cylinder 5 is positioned close to the guide roller 7 and close to the surface of the sorting conveyor belt 2, so as to blow and clean the surface of the sorting conveyor belt 2 when the sorting conveyor belt 2 is in a state of separation from the freeze-dried material at the drop sorting section 15.

[0042] In this embodiment, guide roller 7 and guide roller 8 are arranged from high to low in the longitudinal height, dividing the upper conveying surface of the sorting conveyor belt 2 into auxiliary sorting steps 13 and 14 of different heights. A drop sorting section 15 (concave structure) with a set height difference is formed between the two steps. The freeze-dried material first moves forward with the sorting conveyor belt 2 on the auxiliary sorting step 13. After the visual inspection system 4 completes the preliminary surface inspection, it runs with the conveyor belt to the drop sorting section 15. Under the action of gravity, it falls freely from the end of the auxiliary sorting step 13 to the conveying surface of the auxiliary sorting step 14. During the falling process, the sorting auxiliary blowing cylinder 5 located inside the drop sorting section 15 introduces compressed gas through the air inlet pipe 12. The airflow blows upward through multiple air holes 18 evenly distributed on the surface of the cylinder. The airflow forms a uniform turbulent air curtain, which blows and disperses the falling material bundle, causing the clumps of material to separate. At the same time, it blows up and flips the impurities that were originally attached to the bottom of the material to the upper surface of the material layer, so that the hidden impurities are fully exposed, so that the subsequent color sorting and impurity removal control chamber 3 can accurately adsorb and separate them. The sorting auxiliary blowing cylinder 5 is set close to the rotating surface of the sorting conveyor belt 2 near the guide roller 7. When the sorting conveyor belt 2 rotates downward around the guide roller 7, the airflow blown out by the sorting auxiliary blowing cylinder 5 simultaneously blows the bearing working surface of the conveyor belt, blowing off and collecting the freeze-dried powder and fine debris adhering to the surface, avoiding secondary pollution caused by debris rotating back to the feed end with the conveyor belt. Among them, a collection tray for receiving impurities or a negative pressure suction port is set at the appropriate position to collect the blown-off impurities in a timely manner, which will not be elaborated further here.

[0043] The drop-over structure, combined with airflow turbulence, effectively solves the detection blind spot problem of traditional single-sided color sorting, significantly improving the identification and removal rate of impurities. At the same time, the conveyor belt's rotating station simultaneously completes the belt surface cleaning, eliminating the need for an additional independent cleaning station and optimizing the overall layout of the equipment.

[0044] In one embodiment of the present invention, please refer to Figures 1-6 It also includes: two annular airbags 20, which are located at the two ends of the sorting auxiliary blowing cylinder 5 respectively; An electromagnetic valve is provided between the annular airbag 20 and the sorting auxiliary blowing cylinder 5, and the electromagnetic valve is signal-connected to the vision inspection system 4. Under the control of the solenoid valve, in the material section containing impurities, the sorting auxiliary blowing cylinder 5 is in the blowing working state, the annular airbag 20 is contracted, and the sorting auxiliary blowing cylinder 5 is stationary. For material sections without impurities, the sorting auxiliary blowing cylinder 5 is in a stopped state, the annular airbag 20 expands and comes into contact with the sorting conveyor belt 2, and the sorting auxiliary blowing cylinder 5 rotates. And a cleaning bracket 9, which is fixedly connected to the separation bracket 1, and a brush 19 is detachably installed on the cleaning bracket 9. The brush 19 abuts against the sorting auxiliary blowing cylinder 5 and is used to clean the surface of the sorting auxiliary blowing cylinder 5 when the sorting auxiliary blowing cylinder 5 rotates.

[0045] In this embodiment, annular airbags 20 are respectively installed at both ends of the sorting auxiliary blowing cylinder 5. A solenoid valve is installed between the annular airbags 20 and the air passage of the sorting auxiliary blowing cylinder 5, and the solenoid valve is signal-connected to the vision inspection system 4 to form a linkage control logic. When the vision inspection system 4 detects a risk of bottom impurities in the corresponding material section on the auxiliary sorting step 13, it sends a control signal to the solenoid valve to control the annular airbags 20 to de-exhaust and contract, causing the annular airbags 20 to disengage from the surface of the sorting conveyor belt 2. At this time, the sorting auxiliary blowing cylinder 5 remains stationary, and the air inlet pipe 12 is pressurized. The compressed gas is blown out through the air vents 18 to create a turbulent airflow that flips and disperses the falling material. In addition, the blowing in a static state can keep the air outlet angle and airflow direction of each air vent constant, forming a stable and uniform turbulent air curtain at the drop sorting section 15. This avoids airflow turbulence and air pressure fluctuations caused by the rotation of the cylinder, and can accurately act on the falling material bundle. While ensuring that impurities are fully flipped and exposed, it avoids the scattering of lightweight freeze-dried qualified materials due to unstable airflow or the random landing point of impurities, which would affect the subsequent color sorting and separation. Ultimately, it ensures the consistency of the turbulent flipping effect and the sorting accuracy. When the vision inspection system 4 detects no obvious impurities in the corresponding material section, the solenoid valve controls the annular airbag 20 to inflate. The inflated annular airbag 20 abuts against the lower surface of the sorting conveyor belt 2. Relying on the friction of the running sorting conveyor belt 2, it drives the sorting auxiliary blowing cylinder 5 to rotate synchronously. At this time, the air inlet pipe 12 stops supplying air. During the rotation of the sorting auxiliary blowing cylinder 5, its cylinder surface continuously rubs against the brush 19 on the cleaning bracket 9. The bristles of the brush 19 sweep across the cylinder surface and the periphery of the air hole 18, scraping off the adhering dust and debris, and preventing the air hole 18 from escaping. The blockage affects the air output effect; stopping the air supply before rotating for cleaning can prevent the airflow from blowing up the dust and debris scraped off by the brush and scattering it into the material conveying area or inside the equipment, thus preventing secondary pollution of the material and dust accumulation in the cavity. At the same time, in the rotating state, all the air holes and outer walls of the cylinder can fully contact the brush 19, achieving comprehensive cleaning without dead angles. Moreover, the cleaning operation is completed by relying on the gap of the section without impurities, without interrupting the sorting process or requiring additional independent cleaning drive components. This ensures the cleaning effect while taking into account the equipment's operating efficiency and energy consumption control.

[0046] This vision-linked intelligent start-stop structure activates the air blowing function only in the section containing impurities, which can significantly reduce compressed air consumption and save equipment operating costs. At the same time, it uses the conveyor belt power of the section without impurities to drive the cylinder to rotate and complete self-cleaning, eliminating the need for additional cleaning drive components. This achieves the dual effects of energy saving and self-maintenance, ensuring the long-term uniformity of turbulent airflow and improving the stability and reliability of equipment operation.

[0047] It should be noted that, in this invention, unless otherwise explicitly specified and limited, the terms "sliding," "rotating," "fixed," and "equipped" should be interpreted broadly. For example, they can refer to welded connections, bolted connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A freeze-dried material airflow-assisted color sorting and separation device, comprising a separation support, a material conveying device mounted on the separation support, and a vision inspection system fixedly installed on the separation support, characterized in that, It also includes a color sorting and impurity removal control chamber, an arc-shaped blowing plate, and a color sorting telescopic adsorption assembly; The color sorting and impurity removal control chamber is fixedly installed on the separation bracket. Its interior consists of an impurity temporary storage chamber and a switching adjustment chamber. A color sorting slot is opened directly below the switching adjustment chamber, and the color sorting slot is located directly above the material conveying equipment. The arc-shaped blower plate is fixedly installed at the bottom of the switching adjustment cavity and is located near the color sorting slot. The arc-shaped blower plate is an arc-shaped structure with the air outlet bent towards the impurity storage cavity. The color sorting telescopic adsorption assembly is disposed on the color sorting and impurity removal control cavity, including a rotary drive unit and multiple telescopic adsorption units. The rotary drive unit is connected to the separation bracket, and the multiple telescopic adsorption units are all located in the switching adjustment cavity and are all connected to the rotary drive unit. Under the detection of the vision inspection system, the telescopic adsorption unit extends through the color sorting slot at regular intervals to adsorb and separate impurities on the material conveying equipment. When the rotary drive unit drives the telescopic adsorption unit to rotate toward the impurity temporary storage chamber, the telescopic adsorption unit extends to discharge slag, and the arc-shaped blower simultaneously blows and collects the impurities in a directional manner, and cleans the telescopic adsorption unit.

2. The airflow-assisted color sorting and separation device for freeze-dried materials according to claim 1, characterized in that, The rotation drive unit includes: A conversion drive motor is fixedly mounted on the color sorting and impurity removal control cavity; And a rotating shaft, which is rotatably mounted in the switching adjustment cavity, and one end of the rotating shaft is fixedly connected to the output end of the conversion drive motor; The rotating shaft has a suction hole, which is connected to the telescopic adsorption unit via a flexible hose. The suction hole is also connected to an external suction device via an adapter, which is used to generate negative pressure in the telescopic adsorption unit and adsorb impurities in the material.

3. The airflow-assisted color sorting and separation device for freeze-dried materials according to claim 2, characterized in that, The stretchable adsorption unit includes: The telescopic components are multiple, and the multiple telescopic components are evenly distributed on the rotating shaft to form multiple circumferential adsorption stations. And a cleaning nozzle, which is fixedly connected to the telescopic end of the telescopic member and communicates with the suction hole; Under the detection of the vision inspection system, multiple circumferential adsorption stations are switched through the extension, retraction and rotation of multiple impurity removal nozzles, and impurities are sorted and collected during the station switching process.

4. The airflow-assisted color sorting and separation device for freeze-dried materials according to any one of claims 1-3, characterized in that, Also includes: Cleaning bracket two is fixedly installed in the color sorting and impurity removal control cavity and is located close to the impurity temporary storage cavity; And a second brush, which is fixedly installed on the other end of the cleaning bracket and is detachably connected to the telescopic adsorption unit; Wherein, the projected length of the second brush from the impurity storage cavity is less than the length of the arc-shaped blower from the impurity storage cavity. During the rotation of the telescopic adsorption unit, the residual impurities on the telescopic adsorption unit are scraped and cleaned by adjusting its own telescopic length.

5. The airflow-assisted color sorting and separation device for freeze-dried materials according to claim 1, characterized in that, The material conveying equipment includes a sorting conveyor belt located below the vision inspection system, and the sorting conveyor belt is used to carry freeze-dried materials forward for color sorting and separation. The material conveying equipment also includes a first drive roller and a second drive roller, both of which are rotatably connected to the separation bracket, and the diameter of the first drive roller is larger than the diameter of the second drive roller. The sorting conveyor belt is mounted on the first drive roller and the second drive roller.

6. The airflow-assisted color sorting and separation device for freeze-dried materials according to claim 5, characterized in that, Also includes: Guide roller one and guide roller two are rotatably connected to the separating bracket and connected to the sorting conveyor belt; The guide roller 1 and guide roller 2 are arranged longitudinally from high to low, and the distance between the guide roller 2 and the drive roller 1 is less than the distance between the guide roller 1 and the drive roller 1.

7. The airflow-assisted color sorting and separation device for freeze-dried materials according to claim 6, characterized in that, The guide roller one and guide roller two divide the upper plane of the sorting conveyor belt into auxiliary sorting steps one and auxiliary sorting steps two with different heights; The visual inspection system is located on the first auxiliary sorting step, and the color sorting and impurity removal control cavity is located on the second auxiliary sorting step. A drop sorting section is formed between the first auxiliary sorting step and the second auxiliary sorting step, and a flow disturbance component is provided at the drop sorting section; During the descent of the freeze-dried material and impurities at the drop sorting section, the turbulence component blows the impurities covering the bottom of the freeze-dried material to the upper surface of the freeze-dried material on the second auxiliary sorting step, so as to achieve precise separation of impurities by the subsequent color sorting and impurity removal control chamber.

8. The airflow-assisted color sorting and separation device for freeze-dried materials according to claim 7, characterized in that, The turbulence-disrupting component includes: An air intake pipe is rotatably connected to the separation bracket and is connected to an external air source via an adapter. The sorting auxiliary blowing cylinder is fixedly installed in the middle of the air inlet pipe and located at the drop sorting section; The system includes multiple air holes, which are evenly distributed on the sorting auxiliary blowing cylinder and connected to the air inlet pipe.

9. The airflow-assisted color sorting and separation device for freeze-dried materials according to claim 8, characterized in that, The sorting auxiliary blowing cylinder is positioned close to the guide roller and close to the surface of the sorting conveyor belt, so as to blow and clean the surface of the sorting conveyor belt when the sorting conveyor belt is in a state of separation from the freeze-dried material at the drop sorting section.

10. The airflow-assisted color sorting and separation device for freeze-dried materials according to claim 8 or 9, characterized in that, Also includes: Two annular airbags are provided, with each annular airbag located at one end of the sorting auxiliary blowing cylinder. An electromagnetic valve is provided between the annular airbag and the sorting auxiliary blowing cylinder, and the electromagnetic valve is connected to the visual inspection system. Under the control of the solenoid valve, in the material section containing impurities, the sorting auxiliary blowing cylinder is in the blowing working state, the annular airbag is contracted, and the sorting auxiliary blowing cylinder is stationary. For material sections without impurities, the sorting auxiliary blowing cylinder is in a stopped state, the annular airbag expands and comes into contact with the sorting conveyor belt, and the sorting auxiliary blowing cylinder rotates; The cleaning bracket is fixedly connected to the separation bracket, and a brush is detachably installed on the cleaning bracket. The brush abuts against the sorting auxiliary blowing cylinder and is used to clean the surface of the sorting auxiliary blowing cylinder when the sorting auxiliary blowing cylinder rotates.

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