Fine powder accurate quantitative dispensing device and dispensing method thereof

Abstract

The present application belongs to the technical field of discharging apparatus, and discloses a precise quantitative dispensing device for fine powder and a dispensing method thereof. The device comprises a shell, a feeding port is installed on the upper side of the shell, a feeding pipe is connected to the lower side of the feeding port, and a quantitative assembly is arranged at the lower end of the feeding pipe. The quantitative assembly comprises an upper turntable, a quantitative pipe and a lower turntable, the upper turntable and the lower turntable are driven to rotate simultaneously by a first driving device, the quantitative pipe is connected to the shell in a relatively stationary manner, a storage port is arranged on the upper turntable, a discharging port is arranged on the lower turntable, and a storage section is formed between the vertical projections of the storage port and the discharging port. A storage turntable is arranged on the lower side of the lower turntable, and a plurality of storage and discharging units are arranged on the storage turntable. Each storage and discharging unit comprises a storage hole, a blocking and overturning plate and a first trigger structure, and a second trigger structure is arranged on the shell. The device can realize constant quantitative and clean dispensing of fine powder, and is suitable for precise dose dispensing of fine powder such as health protein powder.

Description

Technical Field

[0001] This invention belongs to the field of feeding equipment technology, specifically relating to a device for precise quantitative distribution of fine powder and its distribution method. Background Technology

[0002] Fitness protein powder is a widely used nutritional supplement in the sports and fitness field. Precisely controlling the dosage per serving is crucial for ensuring the effectiveness of nutritional supplementation and matching the intensity of exercise training. Existing dispensing devices for fine powders mostly adopt volumetric scooping or simple weighing structures. When handling fine powders like protein powder, which are prone to moisture absorption and adhesion to the container walls, there are problems such as the quantitative graduation accuracy being easily affected by the flow state of the powder, powder residue spillage during the dispensing process, and insufficient flexibility in adjusting the target dosage per serving. It is difficult to simultaneously meet the requirements of constant and accurate dispensing, clean dispensing, and adjustable dosage. Summary of the Invention

[0003] To address the problems of unstable quantitative accuracy, easy residue, and insufficient flexibility in dosage adjustment of fine powders in existing technologies, this invention proposes a precise quantitative dispensing device and method for fine powders. The invention provides the following technical solution: A precise quantitative dispensing device for fine powder includes a housing. An inlet is installed on the upper side of the housing, and a feed pipe is connected to the lower side of the inlet. A quantitative component is provided at the lower end of the feed pipe. The quantitative component includes an upper turntable, a quantitative tube, and a lower turntable. A first driving device for simultaneously rotating the upper and lower turntables is installed inside the housing. The quantitative tube is relatively stationary and connected to the housing. A storage port is provided on the upper turntable, and a discharge port is provided on the lower turntable. A material storage section is formed between the vertical projections of the storage port and the discharge port. A storage turntable is provided on the lower side of the lower turntable. A second driving device for rotating the storage turntable is installed inside the housing. The storage turntable is provided with multiple storage and discharging units. Each storage and discharging unit includes a storage hole, a baffle plate, and a first triggering structure. The baffle plate is hinged to the lower side of the storage hole. A drain pipe for guiding powder to the outside of the housing is provided on the lower side of the baffle plate. A second triggering structure is provided on the housing to cooperate with the first triggering structure to rotate the baffle plate. After the second driving device drives the first triggering structure to rotate and cooperate with the second triggering structure, the baffle plate flips downward, and the powder slides into the drain pipe to achieve discharging.

[0004] Preferably, the first triggering structure includes a telescopic drive assembly, a telescopic support rod, and a connecting plate. A sliding seat is fixedly connected to the lower side of the storage turntable, and the telescopic support rod passes through and is slidably connected to the sliding seat. The connecting plate is inclined and has interconnected radial sliding hinge holes and vertical sliding hinge holes. The telescopic support rod passes through the sliding hinge holes and its end is connected to a limiting shaft. The limiting shaft is perpendicular to the telescopic support rod and is slidably connected to the vertical sliding hinge hole.

[0005] Preferably, the telescopic drive assembly includes a compression spring sleeved on the telescopic support rod. A limiting sliding joint is fixedly connected to the outer end of the telescopic support rod. Both ends of the compression spring abut against the sliding seat and the limiting sliding joint. The telescopic drive assembly includes an arc-shaped groove extending vertically and bending horizontally. The arc-shaped groove is fixedly connected to the housing. The limiting sliding joint rotates around a vertical axis and is slidably connected to the arc-shaped groove. When the limiting sliding joint is not in contact with the arc-shaped groove, the limiting shaft pushes the connecting plate, and the material-blocking flip plate abuts against the storage turntable and seals the lower end of the storage hole. When the limiting sliding joint slides into the arc-shaped groove, under the action of the compression spring, the limiting shaft pulls the connecting plate, and the material-blocking flip plate flips downwards and releases the seal of the storage hole.

[0006] Preferably, the telescopic drive assembly includes a first magnetic suction member, a second magnetic suction member, and an elastic reset device for pushing the material stop flip plate against the storage turntable. The first magnetic suction member is fixedly connected to the outer end of the telescopic support rod, and the second magnetic suction member is installed on the housing. When the first magnetic suction member rotates to magnetically attract the second magnetic suction member, the limiting shaft pulls the connecting plate, the elastic reset device is compressed, and the material stop flip plate flips downward and releases the seal of the storage hole.

[0007] Preferably, the first magnetic attractor has two first magnetic blocks arranged at equal intervals around the horizontal axis, and the second magnetic attractor has four second magnetic blocks arranged at equal intervals around the horizontal axis; among the four second magnetic blocks, two second magnetic blocks that are diagonally opposite each other around the second magnetic attractor have the same polarity orientation and form a polarity group, forming a total of two polarity groups, and the polarity orientations between the two polarity groups are opposite; the two second magnetic blocks in the same group are not at the same horizontal height.

[0008] Preferably, the telescopic drive assembly further includes a driven gear, a drive shaft, a drive gear set, a shift rack, and a reset rack. The drive shaft is rotatably connected to the housing, the driven gear is fixedly connected to the drive shaft, and the second magnetic attractor is rotatably connected to the housing. The shift rack and the reset rack are located on the upper and lower sides of the driven gear, respectively, and are fixedly connected to the storage turntable via a bracket. The vertical projections of the shift rack and the reset rack are independent of each other and are curved in an arc shape on the projection plane. After the shift rack meshes with the driven gear, it drives the second magnetic attractor to rotate through the drive gear set, switching to the magnetic attracting position. After the reset rack meshes with the driven gear, it drives the second magnetic attractor to rotate in the opposite direction through the drive gear set, cutting off the magnetic attracting state and moving away from the magnetic attracting position.

[0009] Preferably, an anti-blocking pipe is fixedly connected to the lower end of the feed pipe, the anti-blocking pipe is inclined, a stirring shaft is rotatably connected in the anti-blocking pipe, an auger blade is fixedly connected to the stirring shaft, a sealing end cap is installed at the upper end of the anti-blocking pipe, and an anti-blocking drive motor for driving the stirring shaft to rotate is installed on the sealing end cap.

[0010] Preferably, the sealing end cap is provided with a plurality of air supply holes, and the air supply holes are connected to air source connectors for connecting air source components. The air supply holes are arranged at equal intervals around the stirring shaft.

[0011] Preferably, it further includes a controller for linkage control of the various components and a position sensor assembly for detecting the position of each moving component, wherein the position sensor assembly, the first drive device, and the second drive device are electrically connected to the controller.

[0012] A powder dispensing method, based on a precise quantitative dispensing device for fine powders, includes the following steps: S1. Feed anti-blocking conveying: Start the anti-blocking drive motor and introduce purging gas into the anti-blocking pipe. The fine powder is continuously conveyed to the metering component through the feed inlet and feed pipe. S2, Single-gradient quantitative material storage; The first drive device drives the upper and lower turntables to rotate synchronously to the feeding station, the storage port is aligned and connected with the feeding pipe, the discharge port is misaligned and blocked with the lower end of the quantitative pipe, the powder is filled into the storage section, and the quantitative filling of a single graded dose is completed. S3, quantitative powder transfer and accumulation; the first drive device drives the upper and lower turntables to rotate synchronously to the discharge station, the storage port and the feed pipe are misaligned to cut off the feed, the discharge port and the lower storage hole are aligned and connected, and the single-grade quantitative powder falls into the storage hole; according to the target dosage requirement, steps S2 to S3 are repeated to accumulate the corresponding number of graded powders into the same storage hole to complete the storage of the set dosage; S4, Indexing and Rotation Triggering Discharge: The second drive device drives the storage turntable to rotate in an indexing manner, and the storage hole carrying the set dosage of powder moves to the discharge triggering position. The first triggering structure and the second triggering structure cooperate with each other to drive the baffle plate to flip down and open, and the powder in the storage hole is discharged through the drainage pipe. S5. Reset and cycle distribution: The storage turntable continues to rotate, causing the first trigger structure to disengage from the second trigger structure. The material blocking and flipping plate rotates back to reset and seals the storage hole. Based on the feedback signal from the position sensor assembly, the controller controls the first drive device and the second drive device to cycle through the above steps to achieve continuous and accurate distribution of multiple powders.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The first driving device drives the upper and lower turntables to rotate synchronously, realizing the timing switch of the material storage port and the feed pipe being aligned and connected, and the discharge port and the lower end of the quantitative tube being misaligned and blocked, ensuring that the filling of each grade dose is constant and does not interfere with each other. 2. By using the compression spring in the telescopic drive assembly and the arc-shaped groove guide limit sliding joint that bends to the horizontal side, the automatic cycle of the material blocking and flipping plate is achieved, which improves the cycle stability of continuous distribution of multiple powders. 3. The auger blades inside the anti-clogging pipe rotate with the anti-clogging drive motor, and purge gas is introduced into the anti-clogging pipe through the air outlet on the sealed end cover, so as to achieve continuous loosening and anti-clogging of fine powder during the feeding and conveying process, ensuring powder flowability and subsequent quantitative accuracy. Attached Figure Description

[0014] Figure 1 This is a cross-sectional structural schematic diagram of the present invention; Figure 2 yes Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a schematic diagram of the disassembly state of the present invention; Figure 4 This is a perspective view of Embodiment 2 of the present invention; Figure 5 This is another three-dimensional structural schematic diagram of Embodiment 2 of the present invention; In the attached diagram: 1. Shell; 11. Feed pipe; 12. Base; 13. Rotary support; 14. Guide pipe; 15. Positioning seat; 16. Conical hopper; 17. Upper sealing cover; 2. Metering component; 21. Upper turntable; 211. Storage port; 22. Metering tube; 23. Lower turntable; 231. Discharge port; 24. First driving device; 3. Storage turntable; 31. Storage hole; 32. Material blocking and tilting plate; 33. First triggering structure; 331. Telescopic drive component; 3311. Telescopic support rod; 3312. Connecting plate; 3313. Sliding seat; 3314. Limiting shaft; 3315. Compression spring; 3316. Limiting sliding joint; 332. First magnetic chuck; 3321, First magnetic block; 333, Second magnetic chuck; 3331, Second magnetic block; 334, Elastic reset device; 335, Driven gear; 3351, Transmission shaft; 3352, Transmission gear set; 336, Shift rack; 337, Reset rack; 338, Bracket; 339, Manual pull rod; 34, Flange end cover; 35, Transmission cylinder; 36, Second drive device; 361, Output shaft; 4, Anti-clogging pipe; 41, Stirring shaft; 42, Screwdriver blade; 43, Sealing end cover; 431, Anti-clogging drive motor; 432, Air source connector; 44, X-axis linear motor; 45, Z-axis linear motor; 5, Drying oven; 51, Drying chamber. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for illustration and not for limiting the invention.

[0016] Example 1 like Figure 1-3 As shown, a precise quantitative dispensing device for fine powder includes a housing 1. A feed inlet is installed on the upper side of the housing 1, and a feed pipe 11 is connected to the lower side of the feed inlet. A quantitative component 2 is provided at the lower end of the feed pipe 11. The quantitative component 2 includes an upper turntable 21, a quantitative tube 22, and a lower turntable 23. A first driving device 24 for driving the upper turntable 21 and the lower turntable 23 to rotate simultaneously is installed inside the housing 1. The quantitative tube 22 is relatively stationary and connected to the housing 1. A storage port 211 is provided on the upper turntable 21, and a discharge port 231 is provided on the lower turntable 23. A material storage section is formed between the vertical projections of the storage port 211 and the discharge port 231. No further material is stored or discharged in this section. In the storage state (for the metering tube 22), the storage port 211 is connected to the metering tube 22, and the lower turntable 23 blocks the bottom of the metering tube 22; in the discharge state, the upper turntable 21 blocks the upper end of the metering tube 22, and the discharge port 231 is connected to the metering tube 22.

[0017] A storage turntable 3 is provided on the lower side of the lower turntable 23. A second drive device 36 for driving the storage turntable 3 to rotate is installed inside the housing 1. Multiple storage and discharging units are provided on the storage turntable 3. Each storage and discharging unit includes a storage hole 31, a baffle plate 32, and a first triggering structure 33. The baffle plate 32 is hinged to the lower side of the storage hole 31. A guide pipe 14 for guiding powder to the outside of the housing 1 is provided on the lower side of the baffle plate 32. A second triggering structure is provided on the housing 1 for cooperating with the first triggering structure 33 to drive the baffle plate 32 to rotate. After the second drive device 36 drives the first triggering structure 33 to rotate to cooperate with the second triggering structure, the baffle plate 32 rotates downward and the powder slides into the guide pipe 14 to achieve discharge.

[0018] Specifically, the quantitative tube 22 is installed and connected to the housing 1 through the positioning seat 15. The positioning seat 15 is fixedly connected to the inner side wall of the housing 1. The positioning seat 15 is provided with a positioning tube, and the quantitative tube 22 is placed in the positioning tube. Alternatively, it can be detachably connected to the positioning seat 15 through a threaded connection structure. When the quantitative tubes 22 with different inner diameter specifications are installed into the same mounting hole, their cross-sectional area changes accordingly, and the single-gradient filling dosage changes accordingly.

[0019] Specifically, the first trigger structure 33 includes a telescopic drive assembly 331, a telescopic support rod 3311, and a connecting plate 3312. A sliding seat 3313 is fixedly connected to the lower side of the storage turntable 3, and the telescopic support rod 3311 passes through and is slidably connected to the sliding seat 3313. The connecting plate 3312 is inclined and has a radial sliding hinge hole and a vertical sliding hinge hole that are interconnected. The telescopic support rod 3311 passes through the radial sliding hinge hole and is connected to a limiting shaft 3314 at its end. The limiting shaft 3314 is perpendicular to the telescopic support rod 3311 and is slidably connected to the vertical sliding hinge hole.

[0020] Specifically, the telescopic drive assembly 331 includes a compression spring 3315, which is sleeved on the telescopic support rod 3311. The outer end of the telescopic support rod 3311 is fixedly connected to a limiting slide joint 3316. The two ends of the compression spring 3315 abut against the sliding seat 3313 and the limiting slide joint 3316. The telescopic drive assembly 331 includes an arc-shaped groove that extends vertically and bends horizontally to one side. The arc-shaped groove is fixedly connected to the housing 1. The limiting slide joint... The head 3316 rotates around the vertical axis and slides in the arc-shaped groove; when the limiting sliding joint 3316 does not contact the arc-shaped groove, the limiting shaft 3314 pushes the connecting plate 3312, and the material-blocking flip plate 32 presses against the storage turntable 3 and seals the lower end of the storage hole 31; when the limiting sliding joint 3316 slides in the arc-shaped groove, under the action of the compression spring 3315, the limiting shaft 3314 pulls the connecting plate 3312, and the material-blocking flip plate 32 flips downward and releases the seal of the storage hole 31.

[0021] In the first trigger structure 33 described above, the connecting plate 3312 is inclinedly disposed below the storage turntable 3. The radial sliding hinge hole and the vertical sliding hinge hole are interconnected inside the connecting plate 3312, and the two together constrain the displacement of the limiting shaft 3314. The telescopic support rod 3311 is slidably connected to the sliding seat 3313 along the radial direction of the storage turntable 3. One end of the rod facing the center of the storage turntable 3 passes through the radial sliding hinge hole, and its limiting shaft 3314 perpendicular to the rod body is engaged in the vertical sliding hinge hole. When the limiting sliding joint 3316 disengages from the arc-shaped groove as the storage turntable 3 rotates, the compression spring 3315 applies an outward elastic force to the limiting sliding joint 3316. This elastic force is transmitted to the limiting shaft 3314 via the telescopic support rod 3311, causing the limiting shaft 3314 to slide within the vertical sliding hinge hole and push the connecting plate 3312 to rotate around its hinge axis. The connecting plate 3312 then forces the blocking flip plate 32 to flip upward through its connection point with the blocking flip plate 32, so that the blocking flip plate 32 is pressed against the lower surface of the storage turntable 3 and blocks the lower opening of the storage hole 31. At this time, the storage hole 31 is in a closed material-keeping state.

[0022] When the limiting sliding joint 3316 rotates with the storage turntable 3 until it contacts the arc-shaped groove and slides into it along the groove wall, the curved section of the arc-shaped groove guides the limiting sliding joint 3316 inward, causing the telescopic support rod 3311 to retract radially inward. The limiting shaft 3314 then slides in the opposite direction in the vertical sliding hinge hole, and pulls the baffle flip plate 32 downward around its hinge axis via the connecting plate 3312. The lower opening of the storage hole 31 opens accordingly, and the powder in the storage hole 31 is discharged to the outside of the housing 1 through the guide pipe 14 under its own weight. The vertical extension length and bending direction of the arc-shaped groove determine the opening stroke and opening holding range of the baffle flip plate 32, so that the storage turntable 3 continues to discharge material as it rotates through this range. After rotating out of this range, the limiting sliding joint 3316 disengages from the arc-shaped groove again, the compression spring 3315 resets, and pushes the baffle flip plate 32 back to the sealing position, completing one indexing and discharging cycle.

[0023] Furthermore, a base 12 is fixedly connected to the lower end of the housing 1. The base 12 extends horizontally to one side of the guide tube 14 to place the cup and increase the support surface, which can also improve the overall stability. A conical hopper 16 is connected to the upper end of the feed inlet. A powder bucket can be placed in the conical hopper 16, or a powder silo can be added in the conical hopper 16. The upper end of the powder silo is connected to an upper sealing cap 17 via a threaded connection structure to seal the powder silo. At least one of the metering tube 22, sealing end cap 43, anti-clogging tube 4, and flange end cap 34 is detachably connected to adjacent components via a quick-release connection structure, thereby realizing quick assembly, disassembly, and cleaning.

[0024] The sealing method and structure can directly adopt existing mature technologies. For example, the sealing performance can be further improved by using high-hardness materials for the sealing ring and contact surface and performing leveling and polishing, or by improving the fitting accuracy of the contact surface. These details will not be elaborated further.

[0025] Example 2 like Figure 4 and Figure 5 As shown, specifically, the telescopic drive assembly 331 includes a first magnetic suction member 332, a second magnetic suction member 333, and an elastic reset device 334 for pushing the material blocking flip plate 32 against the storage turntable 3. The first magnetic suction member 332 is fixedly connected to the outer end of the telescopic support rod 3311, and the second magnetic suction member 333 is installed on the housing 1. When the first magnetic suction member 332 rotates to magnetically attract the second magnetic suction member 333, the limiting shaft 3314 pulls the connecting plate 3312, the elastic reset device 334 is compressed, the material blocking flip plate 32 flips downward and releases the seal of the storage hole 31.

[0026] Specifically, the first magnetic attractor 332 has two first magnetic blocks 3321 arranged at equal intervals around the horizontal axis, and the second magnetic attractor 333 has four second magnetic blocks 3331 arranged at equal intervals around the horizontal axis. Among the four second magnetic blocks 3331, two second magnetic blocks 3331 that are diagonally opposite each other around the second magnetic attractor 333 form a polarity group, forming a total of two polarity groups. The two second magnetic blocks 3331 in the same group have the same polarity orientation, and the two second magnetic blocks 3331 in the same group are not at the same horizontal height.

[0027] Specifically, the telescopic drive assembly 331 also includes a driven gear 335, a drive shaft 3351, a drive gear set 3352, a shift rack 336, and a return rack 337. The drive shaft 3351 is rotatably connected to the housing 1, and the driven gear 335 is fixedly connected to the drive shaft 3351. The second magnetic suction member 333 is rotatably connected to the housing 1 via a manual pull rod 339 and is rotatably connected to the forward-protruding extension of the housing 1. The drive gear set 3352 includes two meshing gears, which are respectively fixed to the drive shaft 3351 and the manual pull rod 339; the shift rack 336 and the return rack 337... The positioning racks 337 are located on the upper and lower sides of the driven gear 335 and are fixedly connected to the storage turntable 3 via the bracket 338. The vertical projections of the shift rack 336 and the reset rack 337 are independent of each other and are curved in an arc shape on the projection surface. After the shift rack 336 meshes with the driven gear 335, it drives the second magnetic attractor 333 to rotate through the transmission gear set 3352, switching to the magnetic attracting position. After the reset rack 337 meshes with the driven gear 335, it drives the second magnetic attractor 333 to rotate in the opposite direction through the transmission gear set 3352, cutting off the magnetic attracting state and moving away from the magnetic attracting position.

[0028] In the aforementioned cooperation between the first magnetic attractor 332 and the second magnetic attractor 333, two first magnetic blocks 3321 are evenly spaced along the circumference of the first magnetic attractor 332, and four second magnetic blocks 3331 are evenly spaced along the circumference of the second magnetic attractor 333 and divided into two polarity groups. Each group consists of two diagonally opposite second magnetic blocks 3331 with the same polarity orientation. Since the two second magnetic blocks 3331 in the same group are not at the same horizontal height, when the first magnetic attractor 332 rotates with the storage turntable 3... When the vertical axis rotates to the magnetic attraction position and the same first magnetic block 3321 enters the magnetic attraction range of the second magnetic block 3331 in the same group, the two second magnetic blocks 3331 in the same group can contact the first magnetic block 3321 simultaneously, rather than contacting it sequentially. This simultaneous contact ensures that the magnetic attraction force is evenly applied to the first magnetic attractor 332, avoiding the first magnetic attractor 332 from swaying due to the sequential contact of a single magnetic block, thereby ensuring that the first magnetic attractor 332 is smoothly attracted and the telescopic support rod 3311 moves steadily inward along the radial direction. The telescopic support rod 3311 then moves inward along the radial direction, and the limiting shaft 3314 pulls the connecting plate 3312 through the vertical sliding hinge hole, causing the material stop flipping plate 32 to flip downward and open to release the material; at the same time, the elastic reset device 334 is compressed to store the reset elastic force.

[0029] During the indexing process, the support 338 rotates synchronously with the storage turntable 3. The shift rack 336 and the reset rack 337, which are fixedly installed on the support 338, sweep past the driven gear 335, which is fixedly connected to the second magnetic attractor 333. When the shift rack 336 and the driven gear 335 engage, the driven gear 335 is driven by the arc-shaped tooth surface of the shift rack 336 to drive the second magnetic attractor 333 to rotate around its horizontal axis, so that the second magnetic attractor 333 rotates to the magnetic attraction position where it is directly opposite and engaged with the first magnetic attractor 332. When the storage turntable 3 continues to rotate past this position and the reset rack 337 and the driven gear 335 engage, the driven gear 335 rotates in the opposite direction, and the second magnetic attractor 333 rotates away from the magnetic attraction position. The magnetic attraction disappears, the elastic reset device 334 releases its stored energy, and pushes the material stop flipping plate 32 back to the position of sealing the storage hole 31. By selecting the arrangement angle of the shift rack 336 and the reset rack 337 on the three circumferences of the storage turntable, the opening trigger position and closing reset position of each storage and discharging unit can be set independently, so that the discharging cycle of each unit does not interfere with each other.

[0030] Furthermore, a manual pull rod 339 is added to the outside of the housing 1. One end of the manual pull rod 339 passes through the housing 1 and is connected to the second magnetic suction member 333. Pulling the manual pull rod 339 causes the second magnetic suction member 333 to deviate from the magnetic suction position, thereby cutting off the magnetic attraction between the first magnetic suction member 332 and the second magnetic suction member 333. After releasing the manual pull rod 339, the second magnetic suction member 333 returns to the magnetic suction position under the action of the second drive device 36 via the shift rack 336 or the reset rack 337. The structure and operation of the manual pull rod 339 are similar to a clutch or gear shifter. When the power is off or during maintenance, the operator can pull the manual pull rod 339 to release the magnetic attraction lock and then manually unload materials or perform maintenance.

[0031] Example 3 Based on Embodiment 1 or Embodiment 2, an anti-blocking pipe 4 is fixedly connected to the lower end of the feed pipe 11. The anti-blocking pipe 4 is inclined, and a stirring shaft 41 is rotatably connected to the anti-blocking pipe 4. An auger blade 42 is fixedly connected to the stirring shaft 41. A sealing end cap 43 is installed at the upper end of the anti-blocking pipe 4, and an anti-blocking drive motor 431 for driving the stirring shaft 41 to rotate is installed on the sealing end cap 43. Specifically, the stirring shaft 41 is tapered from top to bottom to avoid blockage at the feeding point.

[0032] Specifically, the sealing end cap 43 is provided with six air supply holes, and air supply connectors 432 for connecting air supply components are connected to the air supply holes. The air supply holes are evenly spaced around the stirring shaft 41. The air supply components can be existing mature products, so they will not be described in detail.

[0033] Furthermore, a drying chamber 5 is installed inside the housing 1, and an air source connector 432 is located in the upper part of the drying chamber 5. Several drying compartments 51 are arranged from bottom to top inside the drying chamber 5, each containing replaceable desiccant. The lowest drying compartment 51 is connected to the outside through a vent on the housing 1. An elastic sealing plug is installed in the vent; the vent will only allow normal airflow when air is actively supplied to the anti-clogging pipe 4, thus improving the service life and utilization rate of the internal desiccant.

[0034] Furthermore, an X-axis linear motor 44 and a Z-axis linear motor 45 are fixedly installed on the outer wall of the lower half of the anti-clogging pipe 4. The mover of the X-axis linear motor 44 is arranged along the axial direction of the anti-clogging pipe 4, and the mover of the Z-axis linear motor 45 is arranged along the radial direction of the anti-clogging pipe 4. Both the X-axis linear motor 44 and the Z-axis linear motor 45 are electrically connected to the controller. The mover of the X-axis linear motor 44 performs axial reciprocating motion, and the mover of the Z-axis linear motor 45 performs radial reciprocating motion. The two movers drive the anti-clogging pipe 4 to perform synchronous axial and radial compound reciprocating motion. This displacement is transmitted to the powder inside the pipe through the pipe wall of the anti-clogging pipe 4, which creates continuous disturbance to the powder to suppress agglomeration and bridging.

[0035] Specifically, it also includes a controller for linkage control of various components and a position sensor assembly for detecting the position of each moving component. The position sensor assembly, the first drive device 24, and the second drive device 36 are electrically connected to the controller.

[0036] Based on Embodiment 1, Embodiment 2, or Embodiment 3, a touch panel and a digital display panel are fixedly installed on the outer surface of the housing 1. The signal output terminal of the touch panel and the signal input terminal of the digital display panel are electrically connected to the command receiving terminal and the status output terminal of the controller, respectively. The touch panel has multiple workstation selection keys corresponding to multiple material storage and dispensing units. The operator issues dispensing commands or pre-storage commands to the controller by pressing the corresponding workstation selection key. The digital display panel displays in real time the current indexing workstation number of the material storage turntable 3, the storage status of each material storage hole 31, the cumulative value of a single dispensing dose, and the working status of the anti-blocking drive motor 431, the first drive device 24, and the second drive device 36. The controller determines whether the target material storage and dispensing unit has reached the dispensing trigger position based on the indexing angle signal of the material storage turntable 3 fed back by the position sensor component. When the position is determined to have reached the trigger position, the controller drives the second drive device 36 to coordinate the first trigger structure 33 with the second trigger structure, thereby achieving precise dispensing guided by the on-site interactive interface.

[0037] Example 4 A powder dispensing method, based on the fine powder precise quantitative dispensing device of Example 3, includes the following steps: S1, Feeding anti-blocking conveying; start the anti-blocking drive motor 431 and introduce purging gas into the anti-blocking pipe 4, and the fine powder is continuously conveyed to the metering component 2 through the feed inlet and feed pipe 11.

[0038] S2, Single-gradient quantitative material storage: The first drive device 24 drives the upper turntable 21 and the lower turntable 23 to rotate synchronously to the feeding station. The storage port 211 is aligned and connected with the feeding pipe 11, and the discharge port 231 is misaligned and blocked with the lower end of the quantitative pipe 22. The powder is filled into the storage section, and the quantitative filling of a single graded dose is completed.

[0039] S3, quantitative powder transfer and accumulation; the first drive device 24 drives the upper turntable 21 and the lower turntable 23 to rotate synchronously to the discharge station, the storage port 211 is misaligned with the feed pipe 11 to cut off the feed, the discharge port 231 is aligned and connected with the lower storage hole 31, and the single-grade quantitative powder falls into the storage hole 31; according to the target dosage requirement, steps S2 to S3 are repeated to accumulate the corresponding number of graded powders into the same storage hole 31, and the storage of the set dosage is completed.

[0040] S4, Indexing triggers material discharge; The second drive device 36 drives the storage turntable 3 to rotate in an indexing manner, and the storage hole 31 carrying the set dosage of powder moves to the material discharge trigger position. The first trigger structure 33 and the second trigger structure cooperate with each other to drive the baffle plate 32 to flip downward and open, and the powder in the storage hole 31 is discharged through the guide pipe 14.

[0041] S5. Reset and cycle distribution; the storage turntable 3 continues to rotate, causing the first trigger structure 33 to disengage from the second trigger structure, and the material blocking flip plate 32 rotates back to reset and seals the storage hole 31; the controller controls the first drive device 24 and the second drive device 36 to cycle through the above steps based on the feedback signal of the position sensor component, so as to achieve continuous and accurate distribution of multiple powders.

[0042] Example 5 Based on Embodiment 3 or Embodiment 4, eight equally sized storage holes 31 are evenly arranged on the storage turntable 3. The eight storage holes 31 are arranged at equal angular intervals along the circumference of the storage turntable 3, and the included angle between the centers of two adjacent storage holes 31 is 45 degrees. Seven of the eight storage holes 31 are designated as pre-storage stations, used to pre-store the set dosage of powder for each of the seven days of the week. The remaining storage hole 31 serves as a real-time distribution station, used to receive and discharge the required dosage of powder in real time when performing the distribution task for the day. According to the weekly schedule set on the touch panel, the controller drives the second drive device 36 in the preparation stage before the daily distribution to rotate the storage hole 31 corresponding to the pre-stored week to the discharge trigger station. The accurate discharge of the day is achieved through the cooperation of the first trigger structure 33 and the second trigger structure.

[0043] Specifically, the storage turntable 3 is divided into eight circumferential sections, each with a corresponding storage hole 31. A connection hole is provided in the center of the storage turntable 3, and an external flange end cap 34 is fixedly connected to the upper and lower surfaces of the storage turntable 3. A transmission cylinder 35 is fixedly connected to the center of the flange end cap 34, and the lower end of the transmission cylinder 35 is connected to the output shaft 361 of the second drive device 36. The second drive device 36 drives the storage turntable 3 to rotate via the transmission cylinder 35 and the flange end cap 34. A rotating support 13 is fixedly connected to the base 12, which supports the transmission cylinder 35, the flange end cap 34, or the storage turntable 3 to improve the stability of the rotation of the storage turntable 3.

[0044] As an alternative to the above arrangement, seven of the eight storage holes 31 are still used as pre-storage stations corresponding to the seven days of the week, while the remaining storage hole 31 serves as an empty buffer station. This buffer station is used to receive powder returned or temporarily stored from other storage holes 31 when the pre-storage schedule is adjusted or when dispensing is suspended on a certain day, thus avoiding confusion between the pre-storage dosage and the real-time dispensing dosage on the turntable. Regardless of whether the arrangement of seven pre-storage stations plus one real-time station or seven pre-storage stations plus one empty station is used, the digital display panel synchronously displays the station attributes and storage status of each of the eight storage holes 31. The position sensor assembly performs closed-loop detection of the graduation angle of the storage turntable 3, enabling the controller to accurately position any storage hole 31 to the dispensing trigger station or the pre-storage filling station.

[0045] In summary, the fine powder precise quantitative dispensing device of this embodiment completes the metering and storage of a single-division dose through the relative rotation of the upper turntable 21, the quantitative tube 22 and the lower turntable 23 in the quantitative component 2. Then, the storage turntable 3 carries multiple storage and dispensing units to realize the cumulative transfer of the dose. Finally, with the help of the working position cooperation of the first trigger structure 33 and the second trigger structure, the powder is discharged through the guide pipe 14 by the downward flipping of the baffle flip plate 32. Example 1 uses the mechanical linkage of the arc-shaped groove and the compression spring 3315 to achieve the flip trigger. Example 2 uses the linkage of the magnetic attraction of the first magnetic attraction component 332, the second magnetic attraction component 333, the driven gear 335, the shift rack 336 and the reset rack 337 to achieve the flip trigger. The two are interchangeable indexing and rotation triggering material feeding methods. Combined with the anti-blocking pipe 4, the auger blade 42, the air sweeping structure of the air supply hole, and the electronic control coordination of the controller, position sensor assembly, touch panel and digital display panel, the whole device achieves fixed dosage, net splitting and pre-scheduled continuous and accurate distribution under the working conditions of fine powder being easy to agglomerate and leave residue.

Claims

1. A device for precise quantitative dispensing of fine powder, characterized in that, The device includes a housing (1), an inlet is installed on the upper side of the housing (1), and a feed pipe (11) is connected to the lower side of the inlet. A metering component (2) is provided at the lower end of the feed pipe (11). The metering component (2) includes an upper turntable (21), a metering tube (22), and a lower turntable (23). A first driving device (24) for driving the upper turntable (21) and the lower turntable (23) to rotate simultaneously is installed inside the housing (1). The metering tube (22) is relatively stationary connected to the housing (1). A storage port (211) is provided on the upper turntable (21), and a discharge port (231) is provided on the lower turntable (23). A material storage section is formed between the vertical projections of the storage port (211) and the discharge port (231). A storage turntable (3) is provided on the lower side of the lower turntable (23). A second driving device (36) for driving the storage turntable (3) to rotate is installed inside the housing (1). A plurality of storage and discharging units are provided on the storage turntable (3). The storage and discharging unit includes a storage hole (31), a baffle plate (32) and a first triggering structure (33). The baffle plate (32) is hinged to the lower side of the storage hole (31). A guide pipe (14) for guiding the powder to the outside of the housing (1) is provided on the lower side of the baffle plate (32). A second triggering structure is provided on the housing (1) for cooperating with the first triggering structure (33) to drive the baffle plate (32) to rotate. After the second driving device (36) drives the first triggering structure (33) to rotate to cooperate with the second triggering structure, the baffle plate (32) rotates downward and the powder slides into the guide pipe (14) to achieve discharge.

2. The precise quantitative dispensing device for fine powder according to claim 1, characterized in that, The first trigger structure (33) includes a telescopic drive assembly (331), a telescopic support rod (3311), and a connecting plate (3312). A sliding seat (3313) is fixedly connected to the lower side of the storage turntable (3). The telescopic support rod (3311) passes through and is slidably connected to the sliding seat (3313). The connecting plate (3312) is inclined. The connecting plate (3312) is provided with a radial sliding hinge hole and a vertical sliding hinge hole that are interconnected. The telescopic support rod (3311) passes through the sliding hinge hole and its end is connected to a limiting shaft (3314). The limiting shaft (3314) is perpendicular to the telescopic support rod (3311) and is slidably connected to the vertical sliding hinge hole.

3. The precise quantitative dispensing device for fine powder according to claim 2, characterized in that, The telescopic drive assembly (331) includes a compression spring (3315), which is sleeved on the telescopic support rod (3311). The outer end of the telescopic support rod (3311) is fixedly connected to a limiting slide joint (3316). The two ends of the compression spring (3315) abut against the sliding seat (3313) and the limiting slide joint (3316). The telescopic drive assembly (331) includes an arc-shaped groove that extends vertically and bends to the horizontal side. The arc-shaped groove is fixedly connected to the housing (1). The limiting slide joint (3316) is wound around... The vertical shaft rotates and slides in connection with the arc-shaped groove; when the limiting sliding joint (3316) does not contact the arc-shaped groove, the limiting shaft (3314) pushes the connecting plate (3312), and the material-blocking flip plate (32) presses against the storage turntable (3) and blocks the lower end of the storage hole (31); when the limiting sliding joint (3316) slides in the arc-shaped groove, under the action of the compression spring (3315), the limiting shaft (3314) pulls the connecting plate (3312), and the material-blocking flip plate (32) flips downward and releases the seal of the storage hole (31).

4. The precise quantitative dispensing device for fine powder according to claim 2, characterized in that, The telescopic drive assembly (331) includes a first magnetic suction member (332), a second magnetic suction member (333), and an elastic reset device (334) for pushing the material blocking flip plate (32) against the material storage turntable (3). The first magnetic suction member (332) is fixedly connected to the outer end of the telescopic support rod (3311). The second magnetic suction member (333) is installed on the housing (1). When the first magnetic suction member (332) rotates to magnetically attract the second magnetic suction member (333), the limiting shaft (3314) pulls the connecting plate (3312), the elastic reset device (334) is compressed, the material blocking flip plate (32) flips downward and releases the seal of the material storage hole (31).

5. The precise quantitative dispensing device for fine powder according to claim 4, characterized in that, The first magnetic attractor (332) has two first magnetic blocks (3321) arranged at equal intervals around the horizontal axis, and the second magnetic attractor (333) has four second magnetic blocks (3331) arranged at equal intervals around the horizontal axis. Among the four second magnetic blocks (3331), two second magnetic blocks (3331) that are diagonally opposite each other around the second magnetic attractor (333) have the same polarity orientation and form a polarity group, forming two polarity groups in total. The polarity orientations between the two polarity groups are opposite. The two second magnetic blocks (3331) in the same group are not at the same horizontal height.

6. The precise quantitative dispensing device for fine powder according to claim 5, characterized in that, The telescopic drive assembly (331) further includes a driven gear (335), a drive shaft (3351), a drive gear set (3352), a shift rack (336), and a return rack (337). The drive shaft (3351) is rotatably connected to the housing (1), the driven gear (335) is fixedly connected to the drive shaft (3351), and the second magnetic suction member (333) is rotatably connected to the housing (1). The shift rack (336) and the return rack (337) are located on the upper and lower sides of the driven gear (335) respectively and are connected to the bracket (3352). 8) Fixedly connected to the storage turntable (3); the vertical projections of the shift rack (336) and the reset rack (337) are independent of each other and are curved in an arc shape on the projection surface; after the shift rack (336) meshes with the driven gear (335), it drives the second magnetic suction component (333) to rotate through the transmission gear set (3352) and switches to the magnetic suction station; after the reset rack (337) meshes with the driven gear (335), it drives the second magnetic suction component (333) to rotate in the opposite direction through the transmission gear set (3352), cut off the magnetic suction state and move away from the magnetic suction station.

7. The precise quantitative dispensing device for fine powder according to claim 1, characterized in that, The lower end of the feed pipe (11) is fixedly connected to an anti-blocking pipe (4). The anti-blocking pipe (4) is inclined and a stirring shaft (41) is rotatably connected in the anti-blocking pipe (4). A screw conveyor blade (42) is fixedly connected on the stirring shaft (41). A sealing end cap (43) is installed on the upper end of the anti-blocking pipe (4). An anti-blocking drive motor (431) for driving the stirring shaft (41) to rotate is installed on the sealing end cap (43).

8. The precise quantitative dispensing device for fine powder according to claim 7, characterized in that, The sealing end cap (43) is provided with a plurality of air supply holes, and an air source connector (432) for connecting an air source component is connected to the air supply holes. The air supply holes are arranged at equal intervals around the stirring shaft (41).

9. The precise quantitative dispensing device for fine powder according to claim 1, characterized in that, It also includes a controller for linkage control of various components and a position sensor assembly for detecting the position of each moving component. The position sensor assembly, the first drive device (24) and the second drive device (36) are electrically connected to the controller.

10. A powder dispensing method, characterized in that, Based on the precise quantitative dispensing device for fine powder as described in claim 9, the method includes the following steps: S1, Feeding anti-blocking conveying; start the anti-blocking drive motor (431) and introduce purging gas into the anti-blocking pipe (4), and the fine powder is continuously conveyed to the metering component (2) through the feed inlet and feed pipe (11); S2, Single-gradient quantitative material storage; The first driving device (24) drives the upper turntable (21) and the lower turntable (23) to rotate synchronously to the feeding station. The storage port (211) is aligned and connected with the feeding pipe (11), and the discharge port (231) is misaligned and blocked with the lower end of the quantitative pipe (22). The powder is filled into the storage section to complete the quantitative filling of a single-gradient dosage. S3, quantitative powder transfer and accumulation; the first drive device (24) drives the upper turntable (21) and the lower turntable (23) to rotate synchronously to the discharge station, the storage port (211) and the feed pipe (11) are misaligned to cut off the feed, the discharge port (231) and the lower storage hole (31) are aligned and connected, and the single-grade quantitative powder falls into the storage hole (31); according to the target dosage requirement, the steps S2 to S3 are repeated to accumulate the corresponding number of graded powders into the same storage hole (31) to complete the storage of the set dosage; S4, Indexing and indexing triggers material discharge; the second drive device (36) drives the storage turntable (3) to rotate in an indexing manner, and the storage hole (31) carrying the set dosage of powder moves to the material discharge trigger position. The first trigger structure (33) and the second trigger structure cooperate with each other to drive the baffle plate (32) to flip downward and open, and the powder in the storage hole (31) is discharged through the guide pipe (14); S5. Reset and cycle distribution; the storage turntable (3) continues to rotate so that the first trigger structure (33) and the second trigger structure are disengaged, the material blocking flip plate (32) rotates back and resets and blocks the storage hole (31); the controller controls the first drive device (24) and the second drive device (36) to cycle through the above steps according to the feedback signal of the position sensor component, so as to realize the continuous and accurate distribution of multiple powders.

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