Conveying device for mixing granular materials

Abstract

The invention relates to the technical field of mixing and conveying, in particular to a conveying device for mixing granular materials, which comprises a support frame, a mixing device is fixedly connected to the inner side of the support frame, a conveying pipe is fixedly connected to the bottom of the mixing device, and an air compressor is fixedly connected to the outer side of the conveying pipe. The top of the material conveying pipe is fixedly connected with a feeding bin, the top of the mixing device is fixedly connected with a feeding pipe, and the wall scraping assembly is arranged, and a torsion spring is arranged on the inner side of a scraping plate, so that the scraping plate can be tightly attached to the inner wall of the material mixing bin. In the continuous rotation process of the rotating shaft, the scraping plate is in close contact with the inner wall of the material mixing bin to scrape off materials attached to the inner wall of the material mixing bin, so that the materials possibly retained on the inner wall originally enter a material main fluid in the material mixing bin again to participate in the whole material mixing process, and the material mixing efficiency is improved. And the phenomenon of non-uniform mixing caused by the fact that the materials are attached to the bin wall is effectively prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of blending and conveying, and in particular to a conveying device for blending granular materials. Background Art

[0002] In many industrial fields, such as chemical, pharmaceutical, food processing, and building materials manufacturing, the blending and conveying of granular materials is a very common and critical production process. With the development of refined and large-scale industrial production, the requirements for the uniformity and adequacy of granular material blending, as well as the efficiency and stability of conveying, are becoming increasingly higher.

[0003] Conventional granular material blending equipment often uses a simple stirring method. During the mixing process, as the mixing time increases, a large amount of material adheres to the inner wall of the container, gradually forming a layer. This adhered material is unable to participate in the normal mixing process, resulting in not only material waste but also changes the proportion of materials actually mixed, further exacerbating the unevenness of the material blend. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention solves the technical problems thereof by adopting the following technical solution: a conveying device for blending granular materials, comprising: a support frame, a mixing device fixedly connected to the inner side of the support frame, a conveying pipe fixedly connected to the bottom of the mixing device, an air compressor fixedly connected to the outer side of the conveying pipe, a feed bin fixedly connected to the top of the conveying pipe, and a loading pipe fixedly connected to the top of the mixing device. When feeding, the granular material is added to the feed bin, and then the valve on the conveying pipe is closed, and the valve at the bottom of the loading pipe is opened at the same time, so that the conveying pipe and the loading pipe form a connecting pipeline. At this time, the air compressor is driven and the valve at the bottom of the feed bin is opened. At this time, the air compressor works to generate airflow, and the airflow forms a negative pressure in the connecting pipeline. Under the action of the pressure difference, the granular material in the feed bin is sucked into the loading pipe and enters the mixing device along the loading pipe. The mixing device includes a mixing bin, a driving motor is fixedly connected to the top of the mixing bin, and a stirring mechanism is fixedly connected to the output end of the driving motor. The stirring mechanism is used to stir the material added to the mixing bin and scrape off the material attached to the inner wall of the mixing bin. The bottom of the mixing bin is fixedly connected to a discharge valve, and the top of the mixing bin is fixedly connected to a feed pipe. When the material enters the mixing bin along the feed pipe, the driving motor is started. At this time, the driving motor drives the stirring mechanism to rotate in the mixing bin to stir the material. After the mixing of the materials is completed in the mixing bin, the materials fall into the feed pipe through the discharge valve at the bottom. The stirring mechanism includes a rotating shaft, a stirring rod is fixedly connected to the outer side of the rotating shaft, a spiral mixing plate is fixedly connected to the outer side of the stirring rod, scraping components are fixedly connected to both ends of the stirring rod, a dredging component is fixedly connected to the outer wall of the rotating shaft, and a spiral conveying plate is fixedly connected to the bottom of the rotating shaft. During the rotation of the spiral mixing plate, the surface material moves upward, forming a convection cycle with other materials moving downward due to gravity. This circulating flow mode greatly prolongs the residence time and movement path of the material in the mixing bin, promotes the materials to fully contact, collide and rub with each other, and fully mixes different granular materials. The scraper assembly includes a connecting rod with a diamond-shaped rod fixedly attached to its outer wall. Scrapers are rotatably connected to each end of the connecting rod. The scrapers are fixedly attached to the inner sides with torsion springs, and the inner walls of the scrapers are fixedly attached to diverter components. The torsion springs inside the scrapers allow the scrapers to closely adhere to the inner wall of the mixing silo. As the shaft rotates, the scrapers maintain close contact with the inner wall of the mixing silo, scraping off material adhering to the inner wall.

[0005] Preferably, the bottom end of the loading pipe is fixedly connected to the outer wall of the delivery pipe, the inner side of the support frame is fixedly connected to the outer wall of the mixing bin, the top end of the feed pipe is fixedly connected to the outer wall of the loading pipe, the bottom of the discharge valve is fixedly connected to the top of the delivery pipe, and the outer side of the stirring mechanism is rotatably connected to the inner wall of the mixing bin. The material falls into the delivery pipe through the discharge valve at the bottom. At this time, the valves at the bottom of the feed bin and the loading pipe are closed, and the valve on the delivery pipe is opened at the same time. The air compressor outside the delivery pipe provides power to complete the material transportation process.

[0006] Preferably, the top end of the rotating shaft is fixedly connected to the output end of the driving motor, the outer wall of the rotating shaft is rotatably connected to the inner wall of the mixing bin, the outer side of the scraper assembly is slidably connected to the inner wall of the mixing bin, and the outer side of the spiral conveyor plate is rotatably connected to the inner wall of the mixing bin. When the rotating shaft rotates forward, the spiral conveyor plate drives the material on its surface to move upward. At the bottom of the mixing bin, the material is prone to block the area near the discharge port due to moisture, particle agglomeration, etc. The rotation of the spiral conveyor plate can promptly push these potentially blocked materials away, allowing them to participate in the mixing stage.

[0007] Preferably, the outer side of the dredging component is rotatably connected to the inner wall of the mixing bin, and the spiral conveying plate is located at the bottom of the dredging component. The dredging component is located at the bottom of the spiral mixing plate. When the rotating shaft reverses, the spiral conveying plate reverses accordingly, and the material at the bottom of the mixing bin can be pushed toward the discharge valve to facilitate the discharge of the material from the mixing bin.

[0008] Preferably, both ends of the stirring rod are fixedly connected to the outer wall of the connecting rod, the diamond rods are linearly arranged along the central axis of the connecting rod, and the diverter components are linearly arranged along the central axis of the scraper. A rectangular groove is provided in the wall of the scraper. The outer side of the scraper is slidably connected to the inner wall of the mixing bin. The diamond rods come into contact with the material before the scraper, and can withstand most of the impact and wear in the material, thus playing a role of buffering and protection.

[0009] Preferably, the diversion component includes a fixed cylinder, the inner wall of the fixed cylinder is slidably connected to a sliding rod, the outer side of the sliding rod is fixedly connected to a diversion block, the outer side of the sliding rod is fixedly connected to a tension spring, and the diversion block can contact the material before the scraper contacts the material, continuously and efficiently divert and mix the material, and create a complex and efficient material mixing microenvironment around the scraper, which greatly promotes the mixing uniformity of the material in the scraping wall area and avoids the accumulation or retention of the material near the scraper.

[0010] Preferably, the outer wall of the fixed cylinder is fixedly connected to the inner wall of the scraper, the outer side of the tension spring is fixedly connected to the inner wall of the fixed cylinder, and a vent hole is opened in the wall of the sliding rod. When the sliding rod slides in the fixed cylinder, the vent hole can ensure the air pressure balance inside the fixed cylinder.

[0011] Preferably, the dredging assembly includes a rotating plate, the top of which is fixedly connected to a support rod, the inner wall of which is fixedly connected to an annular support rod, and the outer side of which is fixedly connected to a stirring plate. The stirring plate is inclined and has a certain angle with the horizontal direction. During the rotation process, the stirring plate exerts an oblique upward force on the material, so that the material is lifted upward and separated from the state originally tightly accumulated at the bottom of the silo, effectively destroying the material accumulation structure.

[0012] Preferably, the outer side of the rotating plate is rotatably connected to the inner wall of the mixing bin, the inner wall of the mixing bin is slidably connected to the outer wall of the support rod, the support rod is arranged in a ring along the central axis of the rotating plate, and the center of the rotating plate is fixedly connected to the outer wall of the rotating shaft. The annular strut fixedly connected to the inner wall of the support rod enhances the structural strength of the support rod, ensuring that it will not be deformed or damaged when subjected to material impact and stirring resistance.

[0013] The beneficial effects of the present invention are as follows: 1. The present invention sets up a stirring mechanism, and the driving motor drives the rotating shaft to rotate, and the stirring rod fixedly connected to the outside thereof and the spiral mixing plate on the outside of the stirring rod rotate accordingly. The spiral mixing plate stirs the materials in the mixing bin. During the rotation of the spiral mixing plate, it drives the surface materials to move upward, forming a convection cycle with other materials that move downward due to gravity. This circulating flow pattern greatly prolongs the residence time and movement path of the materials in the mixing bin, promotes the materials to fully contact, collide and rub with each other, and fully mixes different granular materials. Through continuous turning and stirring, the uniformity of material mixing is promoted, and the uniformity and sufficiency of material mixing are improved.

[0014] 2. This invention incorporates a spiral conveyor plate. When the shaft rotates forward, the spiral conveyor plate drives the material on its surface upward. At the bottom of the mixing silo, material can easily clog the area near the discharge port due to moisture, particle agglomeration, and other factors. The rotation of the spiral conveyor plate promptly pushes these potentially clogged materials away, allowing them to participate in the mixing stage. When the shaft rotates backward, the spiral conveyor plate also reverses, pushing the material at the bottom of the mixing silo toward the discharge valve for easy discharge from the mixing silo.

[0015] 3. This invention incorporates a scraper assembly and a torsion spring inside the scraper, enabling the scraper to closely adhere to the inner wall of the mixing silo. As the shaft rotates, the scraper, through close contact with the inner wall of the mixing silo, scrapes off any material adhering to it. This allows the material, which might have been trapped on the inner wall, to re-enter the main material flow within the mixing silo and participate in the overall material mixing process, effectively preventing uneven mixing caused by material adhering to the silo wall.

[0016] 4. The present invention utilizes diamond-shaped rods. When encountering agglomerated granular materials, the sharp corners of the rods can penetrate into the agglomerates. The shear and extrusion forces generated by the rods' rotation gradually break down the internal structure of the agglomerated materials. This rapidly disintegrates the agglomerates, ensuring that the materials are evenly dispersed for subsequent blending and conveying, thus preventing the presence of agglomerates from affecting overall material quality uniformity and conveying stability. The rectangular slots allow the material scraped off by the scrapers to pass between the scrapers, preventing accumulation on the scraper surfaces.

[0017] 5. This invention incorporates diamond-shaped rods that contact the material before the scraper, allowing them to withstand most of the material's impact and abrasion, providing both cushioning and protection. Its structural strength and wear resistance reduce the scraper's exposure to harsh working conditions, effectively extending its service life and reducing maintenance costs and replacement frequency for the scraper assembly.

[0018] 6. The present invention sets a diversion component. When the material hits the scraper, under the elastic force of the tension spring, the sliding rod always keeps the tendency to slide toward the outside of the fixed cylinder, so that the diversion block can contact the inner wall of the mixing bin. Therefore, the diversion block can contact the material before the scraper contacts the material, continuously and efficiently divert and mix the material, and create a complex and efficient material mixing microenvironment around the scraper, which greatly promotes the uniformity of material mixing in the scraping wall area, avoids the accumulation or retention of material near the scraper, and ensures that the material can be smoothly circulated and mixed in the mixing bin, providing a material foundation with good uniformity for subsequent material transportation and processing.

[0019] 7. The present invention incorporates a dredging assembly. When the shaft begins to rotate, the rotating plate within the dredging assembly rotates synchronously. A support rod fixed to the top of the rotating plate performs a circular motion about the center of the rotating plate. During rotation, an annular brace fixed to the inner wall of the support rod enhances its structural strength, ensuring it resists deformation or damage from material impact and stirring resistance.

[0020] 8. The present invention provides an inclined stirring plate with a certain angle to the horizontal. During its rotation, the stirring plate exerts an oblique upward force on the material. This lifts the material upward, breaking it from its original tightly packed state at the bottom of the bin. This effectively disrupts the material's accumulation structure and prevents it from agglomerating due to prolonged static storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the internal structure of the present invention; Figure 3 It is a schematic structural diagram of the mixing device of the present invention; Figure 4 It is a structural schematic diagram of the stirring mechanism of the present invention; Figure 5 Schematic diagram of the structure of the spiral mixing plate of the present invention; Figure 6 It is a structural schematic diagram of the wall scraping assembly of the present invention; Figure 7 This invention Figure 6 Schematic diagram of the structure at A; Figure 8 It is a structural schematic diagram of the diversion component of the present invention; Figure 9 It is a structural schematic diagram of the dredging component of the present invention.

[0022] In the figure: 1. support frame; 2. mixing device; 3. feed pipe; 4. air compressor; 5. feed bin; 6. loading pipe; 21. mixing bin; 22. drive motor; 23. feed pipe; 24. stirring mechanism; 25. discharge valve; 241. rotating shaft; 242. stirring rod; 243. spiral mixing plate; 244. scraper assembly; 245. dredging assembly; 246. spiral conveying plate; 441. connecting rod; 442. scraper; 443. diamond rod; 444. torsion spring; 445. diverter component; 446. rectangular groove; 501. fixed cylinder; 502. sliding rod; 503. diverter block; 504. vent; 505. tension spring; 451. rotating plate; 452. support rod; 453. annular support rod; 454. stirring plate. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described to better illustrate the principles of the invention and its practical application, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for specific applications.

[0024] Example: See Figure 1 - Figure 9 The present invention provides a technical solution: a conveying device for mixing granular materials, comprising: The support frame 1 is fixedly connected to the inner side of the support frame 1 with a mixing device 2, the bottom of the mixing device 2 is fixedly connected to a feed pipe 3, the outer side of the feed pipe 3 is fixedly connected to an air compressor 4, the top of the feed pipe 3 is fixedly connected to a feed bin 5, and the top of the mixing device 2 is fixedly connected to a feeding pipe 6; the mixing device 2 includes a mixing bin 21, the top of the mixing bin 21 is fixedly connected to a drive motor 22, and the output end of the drive motor 22 is fixedly connected to a stirring mechanism 24, which is used to stir the material added to the mixing bin. The material in the mixing bin 21 is stirred and the material attached to the inner wall of the mixing bin 21 is scraped off. The bottom of the mixing bin 21 is fixedly connected with a discharge valve 25, and the top of the mixing bin 21 is fixedly connected with a feed pipe 23; the bottom end of the feeding pipe 6 is fixedly connected to the outer wall of the delivery pipe 3, the inner side of the support frame 1 is fixedly connected to the outer wall of the mixing bin 21, the top of the feed pipe 23 is fixedly connected to the outer wall of the feeding pipe 6, the bottom of the discharge valve 25 is fixedly connected to the top of the delivery pipe 3, and the outer side of the stirring mechanism 24 is fixedly connected to the mixing bin 21. The inner wall of the feeding bin is rotated and connected. When feeding, the granular material is added into the feeding bin 5, and then the valve on the feeding pipe 3 is closed, and the valve at the bottom of the feeding pipe 6 is opened at the same time, so that the feeding pipe 3 and the feeding pipe 6 form a connecting pipeline. At this time, the air compressor 4 is driven and the valve at the bottom of the feeding bin 5 is opened. At this time, the air compressor 4 works to generate airflow, and the airflow forms a negative pressure in the connecting pipeline. Under the action of the pressure difference, the granular material in the feeding bin 5 is sucked into the feeding pipe 6 and enters the mixing and blending device along the feeding pipe 6. In the device 2, when the material enters the mixing bin 21 along the feed pipe 23, the drive motor 22 is started. At this time, the drive motor 22 drives the stirring mechanism 24 to rotate in the mixing bin 21 to stir the material. After the material is mixed in the mixing bin 21, the material falls into the delivery pipe 3 through the discharge valve 25 at the bottom. At this time, the valves at the bottom of the feed bin 5 and the feeding pipe 6 are closed, and the valve on the delivery pipe 3 is opened at the same time. The air compressor 4 outside the delivery pipe 3 provides power to complete the material transportation process. Among them, the support frame 1 provides a stable support structure for the entire device, ensuring the stability of each component during operation.

[0025] The stirring mechanism 24 includes a rotating shaft 241, a stirring rod 242 is fixedly connected to the outside of the rotating shaft 241, a spiral mixing plate 243 is fixedly connected to the outside of the stirring rod 242, a scraping assembly 244 is fixedly connected to both ends of the stirring rod 242, a dredging assembly 245 is fixedly connected to the outer wall of the rotating shaft 241, and a spiral conveying plate 246 is fixedly connected to the bottom of the rotating shaft 241; the top of the rotating shaft 241 is fixedly connected to the output end of the driving motor 22, the outer wall of the rotating shaft 241 is rotatably connected to the inner wall of the mixing bin 21, and the scraping assembly 24 4 is slidably connected to the inner wall of the mixing bin 21, the outer side of the spiral conveying plate 246 is rotatably connected to the inner wall of the mixing bin 21, the outer side of the dredging component 245 is rotatably connected to the inner wall of the mixing bin 21, the spiral conveying plate 246 is located at the bottom of the dredging component 245, and the dredging component 245 is located at the bottom of the spiral mixing plate 243. When the stirring mechanism 24 is running, the driving motor 22 drives the rotating shaft 241 to rotate, and the stirring rod 242 fixedly connected to its outer side and the spiral mixing plate 243 outside the stirring rod 242 rotate accordingly. The spiral mixing plate 243 stirs the materials within the mixing silo 21. As the spiral mixing plate 243 rotates, it drives the surface material upward, forming a convection cycle with other materials moving downward due to gravity. This cyclic flow pattern significantly extends the material's residence time and movement path within the mixing silo 21, promoting sufficient contact, collision, and friction between the materials, resulting in thorough mixing of the different granular materials. The continuous stirring and agitation promotes uniform blending of the materials, improving both the uniformity and adequacy of the material blending. When the shaft 241 rotates forward, the spiral conveyor plate 246 drives the material on its surface upward. At the bottom of the mixing silo 21, material can easily clog the area near the discharge port due to moisture or particle agglomeration. The rotation of the spiral conveyor plate 246 promptly removes these potentially clogged materials, allowing them to participate in the mixing phase. When the shaft 241 rotates backward, the spiral conveyor plate 246 also rotates, pushing the material at the bottom of the mixing silo 21 toward the discharge valve 25 for easy discharge from the mixing silo 21.

[0026] The scraper assembly 244 includes a connecting rod 441, the outer wall of which is fixedly connected to a diamond-shaped rod 443. Scrapers 442 are rotatably connected to each end of the connecting rod 441. A torsion spring 444 is fixedly connected to the inner side of the scraper 442. A diverter component 445 is fixedly connected to the inner wall of the scraper 442. The two ends of the stirring rod 242 are fixedly connected to the outer wall of the connecting rod 441. The diamond-shaped rod 443 is linearly arranged along the central axis of the connecting rod 441. The diverter component 445 is linearly arranged along the central axis of the scraper 442. A rectangular groove 446 is defined in the wall of the scraper 442. The outer side of the scraper 442 is slidably connected to the inner wall of the mixing hopper 21. When the rotating shaft 241 of the stirring mechanism 24 begins to rotate, the scraper assembly 244, which is fixedly connected to the ends of the stirring rod 242, rotates synchronously therewith. The connecting rod 441 in the scraper assembly 244 serves as the basic connecting component, with its two ends rotatably connected to the scraper 442. The torsion spring 444 mounted on the inside of the scraper 442 allows it to fit tightly against the inner wall of the mixing silo 21. As the shaft 241 rotates, the scraper 442, through close contact with the inner wall of the mixing silo 21, scrapes off any material adhering to it, allowing it to re-enter the main flow of material within the mixing silo 21 and participate in the overall material blending process. This effectively prevents uneven blending caused by material adhering to the silo wall. When the scraper assembly 244 begins to rotate, the diamond-shaped rod 443 first comes into contact with the material. Upon encountering agglomerated granular material, the sharp corners of the diamond-shaped rod 443 penetrate into the agglomerate, utilizing the shear and compressive forces generated by its rotation to gradually disrupt the internal structure of the agglomerated material. This promotes the rapid disintegration of lumps, ensuring that the material participates in the subsequent mixing and conveying process in a uniformly dispersed state, avoiding the impact of lumps on the overall material quality uniformity and conveying stability. The rectangular grooves 446 allow the material scraped by the scrapers 442 to pass between the scrapers 442, preventing accumulation on the scraper 442 surface. The diamond rods 443 contact the material before the scrapers 442, capable of withstanding most of the impact and wear in the material. It acts as a buffer and protection. Through its inherent structural strength and wear resistance, it reduces the scrapers 442's exposure to these harsh working conditions, thereby effectively extending the scrapers 442's service life and reducing the maintenance cost and replacement frequency of the wall scraper assembly 244.

[0027] The diverter component 445 includes a fixed cylinder 501, the inner wall of the fixed cylinder 501 is slidably connected to a sliding rod 502, the outer side of the sliding rod 502 is fixedly connected to a diverter block 503, the outer side of the sliding rod 502 is fixedly connected to a tension spring 505, the outer wall of the fixed cylinder 501 is fixedly connected to the inner wall of the scraper 442, the outer side of the tension spring 505 is fixedly connected to the inner wall of the fixed cylinder 501, and a vent hole 504 is opened in the wall of the sliding rod 502. The fixed cylinder 501 in the diverter component 445 is firmly fixed to the inner wall of the scraper 442. When the material impacts the scraper 442, under the elastic force of the tension spring 505, the sliding rod 502 always keeps the tendency to slide toward the outside of the fixed cylinder 501. The potential allows the diverter block 503 to contact the inner wall of the mixing bin 21, so the diverter block 503 can contact the material before the scraper 442 contacts the material, continuously diverting and mixing the material efficiently, creating a complex and efficient material mixing microenvironment around the scraper 442, greatly promoting the uniformity of material mixing in the scraping area, avoiding accumulation or retention of material near the scraper 442, ensuring that the material can smoothly circulate and mix as a whole in the mixing bin 21, and providing a material foundation with good uniformity for subsequent material transportation and processing; wherein, when the sliding rod 502 slides in the fixed cylinder 501, the vent hole 504 can ensure the air pressure balance inside the fixed cylinder 501.

[0028] The dredging assembly 245 includes a rotating plate 451, with a support rod 452 fixedly connected to the top of the rotating plate 451. An annular support rod 453 is fixedly connected to the inner wall of the support rod 452. An agitating plate 454 is fixedly connected to the outer side of the support rod 452. The outer side of the rotating plate 451 is rotatably connected to the inner wall of the mixing bin 21, and the inner wall of the mixing bin 21 is slidably connected to the outer wall of the support rod 452. The support rods 452 are arranged in a ring along the central axis of the rotating plate 451. The center of the rotating plate 451 is fixedly connected to the outer wall of the rotating shaft 241. When the rotating shaft 241 begins to rotate, the rotating plate 451 in the dredging assembly 245 rotates synchronously therewith. The support rod 452 fixedly connected to the top of the rotating plate 451 performs a circular motion about the center of the rotating plate 451. During rotation, the annular support rod 453 fixedly connected to the inner wall of the support rod 452 enhances the structural strength of the support rod 452, ensuring that it will not deform or be damaged when subjected to material impact and stirring resistance. The stirring plate 454, fixedly connected to the outside of the support rod 452, penetrates deeply into the material at the bottom of the mixing silo 21. Because the stirring plate 454 is tilted and forms a certain angle with the horizontal direction, it exerts an oblique upward force on the material during rotation. This lifts the material upward and breaks it from its original tightly packed state at the bottom of the silo, effectively disrupting the material's accumulation structure and preventing it from becoming compacted due to prolonged static state.

[0029] Working principle: During use, when feeding, the granular material is added to the feed bin 5, and then the valve on the feed pipe 3 is closed, and the valve at the bottom of the feeding pipe 6 is opened at the same time, so that the feed pipe 3 and the feeding pipe 6 form a connecting pipeline. At this time, the air compressor 4 is driven and the valve at the bottom of the feed bin 5 is opened. At this time, the air compressor 4 works to generate airflow, and the airflow forms a negative pressure in the connecting pipeline. Under the action of the pressure difference, the granular material in the feed bin 5 is sucked into the feeding pipe 6 and enters the mixing device 2 along the feeding pipe 6; When the material enters the mixing bin 21 along the feed pipe 23, the drive motor 22 is started. At this time, the drive motor 22 drives the stirring mechanism 24 to rotate in the mixing bin 21 to stir the material. After the material is mixed in the mixing bin 21, the material falls into the delivery pipe 3 through the discharge valve 25 at the bottom. At this time, the valves at the bottom of the feed bin 5 and the feeding pipe 6 are closed, and the valve on the delivery pipe 3 is opened at the same time. The air compressor 4 outside the delivery pipe 3 provides power to complete the material conveying process. Among them, the support frame 1 provides a stable support structure for the entire device, ensuring the stability of each component during operation; When the stirring mechanism 24 is in operation, the drive motor 22 drives the rotating shaft 241 to rotate, and the stirring rod 242 fixedly connected to the outside thereof and the spiral mixing plate 243 on the outside of the stirring rod 242 rotate accordingly. The spiral mixing plate 243 stirs the materials in the mixing bin 21. During the rotation of the spiral mixing plate 243, the surface materials move upward, forming a convection cycle with other materials moving downward due to gravity. This circular flow pattern greatly prolongs the residence time and movement path of the materials in the mixing bin 21, promotes the materials to fully contact, collide and rub with each other, and fully mixes the different granular materials. Through continuous turning and stirring, the uniformity of the material mixing is promoted, and the uniformity and sufficiency of the material mixing are improved.

[0030] When the rotating shaft 241 of the stirring mechanism 24 starts to rotate, the scraper assembly 244 fixedly connected to the two ends of the stirring rod 242 rotates synchronously therewith. The connecting rod 441 in the scraper assembly 244 serves as a basic connecting component, and its two ends are rotatably connected to the scraper 442. The torsion spring 444 provided on the inner side of the scraper 442 enables the scraper 442 to fit tightly against the inner wall of the mixing bin 21. During the continuous rotation of the rotating shaft 241, the scraper 442 scrapes off the material attached to the inner wall of the mixing bin 21 by virtue of its close contact with the inner wall of the mixing bin 21, so that these materials that may have been trapped on the inner wall can re-enter the main fluid of the material in the mixing bin 21 and participate in the overall material mixing process, effectively preventing uneven mixing caused by the material adhering to the bin wall.

[0031] When scraper assembly 244 begins to rotate, diamond-shaped rods 443 are the first to come into contact with the material. Upon encountering agglomerated granular material, the sharp edges of diamond-shaped rods 443 penetrate into the agglomerates, generating shear and compressive forces as they rotate, gradually breaking down the agglomerated material's internal structure. This rapidly disintegrates the agglomerates, ensuring a uniformly dispersed material for subsequent blending and conveying, thus preventing the presence of agglomerates from affecting overall material quality uniformity and conveying stability. The rectangular slots 446 allow material scraped off by scrapers 442 to pass between them, preventing accumulation on their surfaces.

[0032] Diamond-shaped rods 443 come into contact with the material before scraper blades 442, absorbing most of the material's impact and abrasion. They provide both cushioning and protection. Their structural strength and wear resistance reduce the scraper blades' exposure to these harsh working conditions, effectively extending their service life and reducing maintenance costs and replacement frequency for the scraper assembly 244.

[0033] At the same time, the fixed cylinder 501 in the diverter component 445 is firmly fixed to the inner wall of the scraper 442. When the material hits the scraper 442, under the elastic force of the tension spring 505, the sliding rod 502 always maintains a tendency to slide toward the outside of the fixed cylinder 501, so that the diverter block 503 can contact the inner wall of the mixing bin 21. Therefore, the diverter block 503 can contact the material before the scraper 442 contacts the material, continuously and efficiently diverting and mixing the material, creating a complex and efficient material mixing microenvironment around the scraper 442, greatly promoting the uniformity of mixing of the material in the scraping wall area, avoiding the accumulation or retention of the material near the scraper 442, ensuring that the material can be smoothly circulated and mixed as a whole in the mixing bin 21, providing a material foundation with good uniformity for subsequent material transportation and processing; wherein, when the sliding rod 502 slides in the fixed cylinder 501, the vent 504 can ensure the air pressure balance inside the fixed cylinder 501; When the rotating shaft 241 begins to rotate, the rotating plate 451 in the dredging assembly 245 rotates synchronously. A support rod 452, fixedly attached to the top of the rotating plate 451, moves in a circular motion about the center of the rotating plate 451. During this rotation, an annular strut 453, fixedly attached to the inner wall of the support rod 452, strengthens the support rod 452, ensuring that it does not deform or break when subjected to material impact and stirring resistance. Meanwhile, an agitating plate 454, fixedly attached to the outer side of the support rod 452, penetrates deeply into the material at the bottom of the mixing silo 21.

[0034] Because the stirring plate 454 is inclined and has a certain angle with the horizontal direction, it exerts an oblique upward force on the material during rotation. This lifts the material upward and breaks it from the state of being tightly packed at the bottom of the bin, effectively breaking up the material's accumulation structure and preventing the material from becoming compacted due to prolonged static state.

[0035] When the shaft 241 rotates forward, the spiral conveyor plate 246 drives the material on its surface upward. At the bottom of the mixing bin 21, the material is easily blocked in the area near the discharge port due to moisture, particle agglomeration, etc. The rotation of the spiral conveyor plate 246 can promptly push these potentially blocked materials away, allowing them to participate in the mixing stage. When the shaft 241 rotates reversely, the spiral conveyor plate 246 also reverses, pushing the material at the bottom of the mixing bin 21 toward the discharge valve 25, thereby facilitating the discharge of the material from the mixing bin 21.

[0036] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making creative work should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention are implemented in accordance with conventional means in the field unless otherwise specified or limited.

Claims

1. A conveying device for mixing granular materials, characterized in that: include: A support frame (1), wherein the inner side of the support frame (1) is fixedly connected to a mixing device (2), the bottom of the mixing device (2) is fixedly connected to a delivery pipe (3), the outer side of the delivery pipe (3) is fixedly connected to an air compressor (4), the top of the delivery pipe (3) is fixedly connected to a feed bin (5), and the top of the mixing device (2) is fixedly connected to a feeding pipe (6); The mixing device (2) comprises a mixing bin (21), the top of the mixing bin (21) is fixedly connected to a driving motor (22), the output end of the driving motor (22) is fixedly connected to a stirring mechanism (24), the stirring mechanism (24) is used to stir the material added to the mixing bin (21) and scrape off the material attached to the inner wall of the mixing bin (21), the bottom of the mixing bin (21) is fixedly connected to a discharge valve (25), and the top of the mixing bin (21) is fixedly connected to a feed pipe (23); The stirring mechanism (24) comprises a rotating shaft (241), a stirring rod (242) fixedly connected to the outside of the rotating shaft (241), a spiral mixing plate (243) fixedly connected to the outside of the stirring rod (242), a wall scraping assembly (244) fixedly connected to both ends of the stirring rod (242), a dredging assembly (245) fixedly connected to the outer wall of the rotating shaft (241), and a spiral conveying plate (246) fixedly connected to the bottom of the rotating shaft (241); The wall scraping assembly (244) comprises a connecting rod (441), the outer wall of the connecting rod (441) is fixedly connected to a diamond rod (443), both ends of the connecting rod (441) are rotatably connected to scrapers (442), the inner side of the scraper (442) is fixedly connected to a torsion spring (444), and the inner wall of the scraper (442) is fixedly connected to a diversion component (445).

2. A conveying device for mixing granular materials according to claim 1, characterized in that: The bottom end of the feeding pipe (6) is fixedly connected to the outer wall of the feeding pipe (3), the inner side of the support frame (1) is fixedly connected to the outer wall of the mixing bin (21), the top end of the feeding pipe (23) is fixedly connected to the outer wall of the feeding pipe (6), the bottom of the discharge valve (25) is fixedly connected to the top of the feeding pipe (3), and the outer side of the stirring mechanism (24) is rotatably connected to the inner wall of the mixing bin (21).

3. The conveying device for mixing granular materials according to claim 1, characterized in that: The top end of the rotating shaft (241) is fixedly connected to the output end of the driving motor (22), the outer wall of the rotating shaft (241) is rotatably connected to the inner wall of the mixing bin (21), the outer side of the scraping assembly (244) is slidably connected to the inner wall of the mixing bin (21), and the outer side of the spiral conveying plate (246) is rotatably connected to the inner wall of the mixing bin (21).

4. The conveying device for mixing granular materials according to claim 1, characterized in that: The outer side of the dredging component (245) is rotatably connected to the inner wall of the mixing bin (21), the spiral conveying plate (246) is located at the bottom of the dredging component (245), and the dredging component (245) is located at the bottom of the spiral mixing plate (243).

5. The conveying device for mixing granular materials according to claim 1, characterized in that: The two ends of the stirring rod (242) are fixedly connected to the outer wall of the connecting rod (441), the diamond rod (443) is linearly arranged along the central axis of the connecting rod (441), and the diversion component (445) is linearly arranged along the central axis of the scraper (442). A rectangular groove (446) is provided in the wall of the scraper (442), and the outer side of the scraper (442) is slidably connected to the inner wall of the mixing bin (21).

6. The conveying device for mixing granular materials according to claim 1, characterized in that: The diversion component (445) comprises a fixed cylinder (501), the inner wall of the fixed cylinder (501) is slidably connected to a sliding rod (502), the outer side of the sliding rod (502) is fixedly connected to a diversion block (503), and the outer side of the sliding rod (502) is fixedly connected to a tension spring (505).

7. A conveying device for mixing granular materials according to claim 6, characterized in that: The outer wall of the fixed cylinder (501) is fixedly connected to the inner wall of the scraper (442), the outer side of the tension spring (505) is fixedly connected to the inner wall of the fixed cylinder (501), and a vent hole (504) is provided in the wall of the sliding rod (502).

8. The conveying device for mixing granular materials according to claim 1, characterized in that: The dredging assembly (245) comprises a rotating plate (451), the top of the rotating plate (451) is fixedly connected to a support rod (452), the inner wall of the support rod (452) is fixedly connected to an annular support rod (453), and the outer side of the support rod (452) is fixedly connected to a stirring plate (454).

9. The conveying device for mixing granular materials according to claim 8, characterized in that: The outer side of the rotating plate (451) is rotatably connected to the inner wall of the mixing bin (21), and the inner wall of the mixing bin (21) is slidably connected to the outer wall of the support rod (452). The support rod (452) is arranged in a ring along the central axis of the rotating plate (451), and the center of the rotating plate (451) is fixedly connected to the outer wall of the rotating shaft (241).

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