A granular material suction and dispensing system

Abstract

The utility model discloses a kind of granular material suction and transport subpackaging system, it is related to granular material subpackaging equipment technical field.System includes suction and transport box, suction pipe, suction and transport flap cylinder, first to fourth positive pressure air pipe, suction and transport storage bin, suction and transport flap, material blocker, material guide port and material storage bin.Wherein, suction and transport box and suction and transport storage bin are communicated by suction pipe, suction and transport flap is driven by suction and transport flap cylinder to control the on-off of storage bin and material guide port;Material blocker is installed in material guide port, and its core structure is the Nd-Fe-B strong magnetic component and stainless steel support arranged at intervals, form arc or inclined shape flow guide passage, can change material flow direction and slow down speed, realize impurity adsorption and granularity homogenization.

Description

Technical Field

[0001] This utility model belongs to the technical field of granular material dispensing equipment, specifically relating to a granular material suction and dispensing system applied in industries such as food, pharmaceuticals, and feed production. It is suitable for the filtration, dispersion, and particle size uniformization of granular or particulate fluid materials to improve the accuracy and efficiency of material dispensing. Background Technology

[0002] In the automated packaging of granular materials such as food, pharmaceuticals, and feed, the material pretreatment stage is crucial for packaging accuracy, production efficiency, and product quality. Effectively filtering impurities (such as mesh scraps and metal particles) and ensuring a uniform particle size (density) distribution are key to avoiding subsequent packaging weight deviations and reducing the rejection of defective products. However, existing packaging equipment has the following significant shortcomings in material pretreatment: 1. Separation of filtration and dispersion functions results in low equipment integration. Traditional dispensing machines typically employ separate filtration devices (such as strong magnetic frames and screens) and dispersing structures, with these two functions being separate and independently configured. For example, the filtration stage only uses flat strong magnetic sheets to adsorb impurities, while the dispersing stage relies on simple guide plates or stirring structures, resulting in bulky equipment structures and large space occupation. In automated production lines, this design not only increases the number of mechanical parts but also reduces the utilization efficiency of the equipment's resources, making it difficult to meet the demands for compact and efficient production.

[0003] 2. Insufficient adsorption of impurities results in low filtration efficiency. Existing strong magnetic filtration devices are mostly planar arrangements or simple stacks. When materials fall vertically under gravity, the contact time with the strong magnetic surface is short and the contact area is limited. Taking mesh debris filtration as an example, when materials pass through a traditional strong magnetic frame, the high-speed falling particle flow easily carries impurities directly through, resulting in an adsorption rate of less than 70%. Especially in suction-feed systems, the material travels at a high speed after being transported through pipelines. If the flow direction is not effectively slowed down and changed, impurities are difficult to capture fully, directly affecting the subsequent packaging quality.

[0004] 3. Uneven particle size distribution of materials and insufficient packaging accuracy. During the conveying and storage of granular materials, differences in particle size, density, and flowability can easily lead to stratification within the storage silo (e.g., small particles accumulating in the center, while larger particles are distributed at the edges). Taking a six-column automatic granular packaging machine as an example, the weight deviation can reach ±5% or more during the packaging process due to uneven material density, resulting in a rejection rate of 5%-8% from the weight monitoring system. According to statistics, in each batch of 330,000 bags produced, more than 16,000 bags are rejected due to uneven particle size, causing not only a waste of packaging materials (approximately 5 kg of packaging film) but also increased rework costs and production time.

[0005] 4. The structural design is unreasonable, resulting in poor adaptability and maintainability. Existing filtration and dispersion devices are mostly customized structures with fixed connections to the filling machine's feed inlet, making it difficult to quickly adapt to different equipment models or different types of materials (such as tablets, granules, and fluids containing particles). Furthermore, component replacement requires complete disassembly, resulting in low maintenance efficiency and failing to meet the "rapid changeover and efficient maintenance" requirements of automated production lines.

[0006] As the industry's requirements for intelligent and refined production continue to increase, developing a device that integrates filtration and dispersion functions, efficiently adsorbs impurities, and uniformly distributes material particle size has become key to solving the shortcomings of existing packaging equipment. The material blocker provided by this invention, through innovative strong magnetic arrangement and flow guiding structure design, effectively solves the above problems, significantly improving material pretreatment efficiency and packaging accuracy. Utility Model Content

[0007] In view of this, and addressing the problems of insufficient impurity filtration, uneven particle size distribution, and low equipment integration in the material pretreatment stage of existing dispensing machines, this utility model provides a particulate material suction and dispensing system. Through the innovative design of a strong magnetic component and a flow guiding structure, it achieves the following objectives: Highly efficient impurity adsorption: By utilizing the strong magnetic components to fully contact the materials, it effectively filters adsorbable impurities such as mesh scraps and metal particles, thereby improving the cleanliness of the materials; Uniform material particle size (density): By changing the material flow direction and slowing down the falling speed, the particles of different sizes are fully mixed, eliminating the stratification phenomenon in the storage bin and ensuring that the material density of each channel is consistent during packaging. Improve packaging efficiency and accuracy: reduce the rejection of defective products due to impurities and uneven particle size, and reduce packaging material waste and rework costs; Compact and integrated structure: It integrates filtration and dispersion functions, is compatible with existing suction and conveying systems, saves equipment space, and meets the high-efficiency requirements of automated production lines.

[0008] To achieve the above objectives, the present invention adopts the following solution: a granular material suction and dispensing system, comprising a suction box, a suction pipe, a suction flap cylinder, a first positive pressure air pipe, a suction storage bin, a suction flap, a second positive pressure air pipe, a third positive pressure air pipe, a material blocker, a material guide port, a fourth positive pressure air pipe, and a material storage bin. The suction box is connected to the suction storage bin via a suction pipe, and the suction flap is installed at the bottom of the suction storage bin via a suction flap cylinder to control the opening and closing of the suction storage bin and the guide port. The feed inlet is located below the suction flap, and its outlet end is connected to the material storage bin. The material blocker is installed inside the feed inlet. The first positive pressure air pipe and the fourth positive pressure air pipe are respectively connected to the two air chambers on both sides of the suction and conveying flap cylinder. The second positive pressure air pipe and the third positive pressure air pipe are respectively connected to the suction and conveying box and the suction and conveying storage bin, which are used to control the air pressure environment in the suction and conveying storage bin. The material storage bin is used to store the material after it has been processed by the material blocker.

[0009] Furthermore, the material blocker includes a strong magnetic component arranged at intervals and a stainless steel support. The strong magnetic component is fixedly connected to the stainless steel support to form a flow channel for material to pass through. The cross-sectional shape of the flow channel is arc-shaped or inclined to change the vertical flow direction of the material and slow down the falling speed of the material, so that the material is dispersed and adheres to the surface of the strong magnetic component.

[0010] Furthermore, the strong magnetic component is a neodymium iron boron strong magnet, and the two are fixedly connected.

[0011] Furthermore, the arrangement direction of the strong magnetic components is inclined at an angle of 30°-60° to the horizontal plane, and the spacing between adjacent strong magnetic components is 10-30mm.

[0012] Furthermore, the inlet width of the flow channel is greater than the outlet width, forming a tapered flow channel structure. The inlet width is 80-150mm and the outlet width is 50-100mm.

[0013] Furthermore, the suction flap cylinder drives the suction flap to open and close by switching the air pressure of the first positive pressure air pipe and the fourth positive pressure air pipe. When the first positive pressure air pipe supplies air, the suction flap opens, and when the fourth positive pressure air pipe supplies air, the suction flap closes.

[0014] Furthermore, the second positive pressure air pipe provides positive pressure air to the suction box to create a negative pressure environment, and the third positive pressure air pipe provides positive pressure air to the suction storage bin to quickly restore normal pressure.

[0015] Furthermore, the material blocker is detachably connected to the material guide port via a flange or snap fastener, and the inner diameter of the material guide port matches the outer diameter of the material blocker to form a sealed flow channel.

[0016] The present invention has the following advantages due to the adoption of the above technical solution: I. Significantly improved impurity adsorption efficiency, eliminating contamination from adsorbable impurities. Ultra-efficient adsorption capacity: Through the synergistic effect of strong magnetic components and flow channels, it achieves 100% adsorption rate for adsorbable impurities such as mesh scraps mixed in the material (actual test data: 10 mesh scraps of different lengths were put into 30 kg of granules and all of them were adsorbed after passing through the material blocker), completely solving the problem of incomplete adsorption caused by the fast material flow rate and insufficient contact of traditional strong magnetic supports.

[0017] Impurity filtration mechanism: When the material passes through the filter, the flow channel changes its vertical flow direction and slows down the falling speed, so that the impurities can fully contact the strong magnetic surface, preventing the high-speed particle flow from carrying impurities through, ensuring the cleanliness of the material from the source, and reducing the quality risks in the subsequent packaging process.

[0018] II. Significantly improved particle size (density) uniformity, resulting in greatly enhanced packaging accuracy. Eliminating stratification in storage bins: In response to the problem of "small particles accumulating in the middle and large particles rolling to both sides" in suction feeding systems, the material blocker disperses the material flow through the guide channel, forcing the mixing of large and small particles, ensuring uniform particle size (density) distribution in the storage bin, and solving the core pain point of "weight deviation between the middle and both sides" when multiple rows are packaged.

[0019] Significantly reduced rejection rate due to weight difference: Compared with the original ordinary strong magnetic support, after installing the material blocker, the rejection rate due to weight difference caused by uneven particle size in the dispensing machine is significantly reduced. The measured number of bags produced per kilogram of packaging film increased from 620 bags to 630 bags. Based on a batch of 330,000 bags, this can save about 5 kilograms of packaging film, effectively reducing packaging material waste and rework costs.

[0020] III. Reduced material breakage rate, protecting particle integrity Buffer and flow guiding design: The flow guiding channel slows down the falling speed of the material through an arc or inclined structure, reducing the frictional breakage rate of particles in the suction pipe and storage bin, avoiding abnormal particle size distribution caused by particle breakage, and further ensuring the accuracy of dispensing and metering (in the traditional suction process, particles break due to high-speed friction, which aggravates the stratification phenomenon in the storage bin).

[0021] IV. Compact structure and strong adaptability improve production line efficiency. Integrated functional design: The functions of filtering impurities and dispersing materials are integrated into a single component of the material blocker, replacing the separate filtration and material distribution structures in traditional packaging machines. This reduces equipment space occupation, is compatible with existing six-row and other multi-channel packaging machines, and improves the automation level and space utilization of the production line.

[0022] Easy installation and low maintenance cost: It is fixed to the feed port through a detachable connection method (such as flange, buckle), which is convenient for quick disassembly and cleaning, meeting the needs of "efficient maintenance and continuous material supply" in automated production, and avoiding downtime losses caused by component replacement. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the granular material suction and dispensing system of this utility model; Figure 2 This is a schematic diagram of the structure of the resistive material in this utility model.

[0025] Reference numerals in the attached diagram: 1. Suction box; 2. Suction pipe; 3. Suction flap cylinder; 4. First positive pressure air pipe; 5. Suction storage bin; 6. Suction flap; 7. Second positive pressure air pipe; 8. Third positive pressure air pipe; 9. Material stopper; 10. Guide port; 11. Fourth positive pressure air pipe; 12. Material storage bin. Detailed Implementation

[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0027] Example 1

[0028] like Figure 1 and Figure 2 As shown, this embodiment provides a granular material suction and dispensing system, including a suction box 1, a suction pipe 2, a suction flap cylinder 3, a first positive pressure air pipe 4, a suction storage bin 5, a suction flap 6, a second positive pressure air pipe 7, a third positive pressure air pipe 8, a material blocker 9, a material guide port 10, a fourth positive pressure air pipe 11, and a material storage bin 12.

[0029] The suction box 1 is connected to the suction storage bin 5 through the suction pipe 2; the suction flap 6 is installed at the bottom of the suction storage bin 5 through the suction flap cylinder 3, and is used to control the opening and closing of the suction storage bin 5 and the guide port 10. The feed inlet 10 is located below the suction flap 6, and its outlet end is connected to the material storage bin 12. The material blocker 9 is installed inside the feed inlet 10. The first positive pressure air pipe 4 and the fourth positive pressure air pipe 11 are respectively connected to the two air chambers on both sides of the suction and conveying flap cylinder 3. The second positive pressure air pipe 7 and the third positive pressure air pipe 8 are respectively connected to the suction and conveying box 1 and the suction and conveying storage bin 5, which are used to control the air pressure environment in the suction and conveying storage bin 5. The material storage bin 12 is used to store the material after it has been processed by the material blocker 9.

[0030] In one embodiment, the material blocker 9 includes a strong magnetic component and a stainless steel bracket arranged at intervals. The strong magnetic component and the stainless steel bracket are fixedly connected to form a flow channel for material to pass through. The cross-sectional shape of the flow channel is arc-shaped or inclined to change the vertical flow direction of the material and slow down the falling speed of the material, so that the material is dispersed and adheres to the surface of the strong magnetic component.

[0031] In one implementation, the strong magnetic component in this embodiment is a neodymium iron boron strong magnet, and the two are fixedly connected.

[0032] In one embodiment, the arrangement direction of the strong magnetic components is tilted at an angle of 30°-60° to the horizontal plane, and the spacing between adjacent strong magnetic components is 10-30mm.

[0033] In one implementation, the inlet width of the flow channel in this embodiment is greater than the outlet width, forming a tapered flow channel structure with an inlet width of 80-150mm and an outlet width of 50-100mm.

[0034] In one embodiment, the suction flap cylinder 3 drives the suction flap 6 to open and close by switching the air pressure between the first positive pressure air pipe 4 and the fourth positive pressure air pipe 11. When the first positive pressure air pipe 4 supplies air, the suction flap 6 opens, and when the fourth positive pressure air pipe 11 supplies air, the suction flap 6 closes.

[0035] In one implementation, the second positive pressure air pipe 7 provides positive pressure air to the suction box 1 to form a negative pressure environment, and the third positive pressure air pipe 8 provides positive pressure air to the suction storage bin 5 to quickly restore normal pressure.

[0036] In one embodiment, the material blocker 9 is detachably connected to the material guide port 10 via a flange or snap fastener, and the inner diameter of the material guide port 10 matches the outer diameter of the material blocker 9 to form a sealed flow channel.

[0037] Example 2: Application in food pellet packaging (a) Equipment installation The suction box 1 is connected to the suction storage bin 5 through the suction pipe 2. The connection is sealed with a sealing ring to ensure no material leakage.

[0038] The suction flap 6 is installed at the bottom of the suction storage bin 5. Driven by the suction flap cylinder 3, its opening and closing angle is adjusted to 90° to ensure complete blocking or connection between the suction storage bin 5 and the guide port 10.

[0039] Connect the first positive pressure air pipe 4 and the fourth positive pressure air pipe 11 to the air chambers on both sides of the suction and conveying flap cylinder 3. Connect the second positive pressure air pipe 7 to the suction and conveying box 1 and the third positive pressure air pipe 8 to the suction and conveying storage bin 5. After completion, test the air tightness with an air pressure of 0.6MPa and maintain the pressure for 5 minutes without pressure drop.

[0040] Install a material stopper 9 inside the feed inlet 10: The strong magnetic component uses neodymium iron boron strong magnets (surface magnetic induction intensity 0.5T) and is welded to a 304 stainless steel bracket; The strong magnetic components are arranged at a 45° angle with a spacing of 20mm. The inlet width of the flow guide channel is 100mm, and the outlet width is 80mm. The material stopper 9 is fixed to the feed port 10 via a flange, and the flange bolt torque is controlled at 15 N·m to ensure a seal.

[0041] (II) Work Process Material feeding stage: The first positive pressure air pipe 4 is shut off, and the fourth positive pressure air pipe 11 is supplied with 0.6MPa air pressure, which drives the suction and conveying flap cylinder 3 to close the suction and conveying flap 6. The second positive pressure air pipe 7 supplies 0.5MPa positive pressure air to the suction box 1, forming a -0.05MPa negative pressure. The material is sucked into the suction storage bin 5 through the suction pipe 2 at a speed of 1.5m / s for 15 seconds.

[0042] Material feeding stage: The second positive pressure air pipe 7 stops supplying air, and the third positive pressure air pipe 8 supplies 0.6MPa air pressure to the suction and storage silo 5 to restore normal pressure; When the fourth positive pressure air pipe 11 stops supplying air, the first positive pressure air pipe 4 supplies air, the suction and conveying flap 6 opens, and the material falls into the guide port 10 at a speed of 0.8m / s.

[0043] Filtration and dispersion stage: When the material passes through the material blocker 9, the flow channel reduces the flow velocity from 0.8m / s to 0.3m / s, and impurities (such as 10 pieces of mesh mixed in 30 kg of material) are 100% adsorbed by the strong magnet. Particles of different sizes are mixed in a tapered channel, and the standard deviation of particle size decreases from ±3% to ±0.8%.

[0044] Packaging stage: The material enters the six-row packaging machine through the material storage bin 12 and is packaged by volume measurement. After installing the material stopper 9, the weight difference rejection rate decreased from 5.2% to 1.8%, and the number of bags produced per kilogram of packaging film increased from 620 bags to 630 bags, saving about 5 kilograms of packaging film in 330,000 batches.

[0045] Example 3: Application in pharmaceutical granule packaging (a) Equipment Adjustment The spacing between the 9 strong magnetic components of the resistor has been reduced to 15mm, enhancing the adsorption capacity for tiny impurities. All components (including pipes and valves) are made of food-grade 316L stainless steel with a surface roughness Ra≤0.8μm and are disinfected with ozone and purified water.

[0046] (II) Work Process Material suction stage: Extend the suction time to 20 seconds and increase the negative pressure to -0.07MPa to ensure sufficient material quantity; Filtration and dispersion stage: Due to the reduced spacing between the strong magnetic components, the adsorption efficiency for magnetic impurities larger than 5μm is increased by 20%; Packaging stage: A high-precision ten-column packaging scale is used, with a target weight of 10g per bag. After installing the material stopper 9, the weight deviation is controlled within ±0.05g.

[0047] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A granular material conveying and dispensing system, characterized in that: It includes a suction box (1), a suction pipe (2), a suction flap cylinder (3), a first positive pressure air pipe (4), a suction storage bin (5), a suction flap (6), a second positive pressure air pipe (7), a third positive pressure air pipe (8), a material blocker (9), a material guide port (10), a fourth positive pressure air pipe (11), and a material storage bin (12). The suction box (1) is connected to the suction storage bin (5) through the suction pipe (2), and the suction flap (6) is installed at the bottom of the suction storage bin (5) through the suction flap cylinder (3) to control the opening and closing of the suction storage bin (5) and the guide port (10). The feed inlet (10) is located below the suction flap (6), and its outlet end is connected to the material storage bin (12). The material blocker (9) is installed inside the feed inlet (10). The first positive pressure air pipe (4) and the fourth positive pressure air pipe (11) are respectively connected to the two sides of the air chamber of the suction and conveying flap cylinder (3). The second positive pressure air pipe (7) and the third positive pressure air pipe (8) are respectively connected to the suction and conveying box (1) and the suction and conveying storage bin (5) to control the air pressure environment in the suction and conveying storage bin (5). The material storage bin (12) is used to store the material after it has been processed by the material blocker (9).

2. The particulate material conveying and dispensing system according to claim 1, characterized in that: The material blocker (9) includes a strong magnetic component and a stainless steel bracket arranged at intervals. The strong magnetic component is fixedly connected to the stainless steel bracket to form a flow channel for material to pass through. The cross-sectional shape of the flow channel is arc-shaped or inclined to change the vertical flow direction of the material and slow down the falling speed of the material, so that the material is dispersed and adheres to the surface of the strong magnetic component.

3. The particulate material conveying and dispensing system according to claim 2, characterized in that: The strong magnetic component is a neodymium iron boron strong magnet, and the two are fixedly connected.

4. The particulate material conveying and dispensing system according to claim 2, characterized in that: The arrangement direction of the strong magnetic components is inclined at an angle of 30°-60° to the horizontal plane, and the spacing between adjacent strong magnetic components is 10-30mm.

5. The particulate material conveying and dispensing system according to claim 2, characterized in that: The inlet width of the flow channel is greater than the outlet width, forming a tapered flow guide structure. The inlet width is 80-150mm and the outlet width is 50-100mm.

6. The particulate material conveying and dispensing system according to claim 1, characterized in that: The suction and conveying flap cylinder (3) drives the suction and conveying flap (6) to open and close by switching the air pressure of the first positive pressure air pipe (4) and the fourth positive pressure air pipe (11). When the first positive pressure air pipe (4) supplies air, the suction and conveying flap (6) opens, and when the fourth positive pressure air pipe (11) supplies air, the suction and conveying flap (6) closes.

7. The particulate material conveying and dispensing system according to claim 1, characterized in that: The second positive pressure air pipe (7) provides positive pressure air to the suction box (1) to form a negative pressure environment, and the third positive pressure air pipe (8) provides positive pressure air to the suction storage bin (5) to quickly restore normal pressure.

8. The particulate material conveying and dispensing system according to claim 1, characterized in that: The material blocker (9) is detachably connected to the material guide port (10) via a flange or snap fastener, and the inner diameter of the material guide port (10) matches the outer diameter of the material blocker (9) to form a sealed flow channel.

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