Milling and planing material drying and dust removal integrated processing device

Abstract

The present application relates to the field of building material processing and handling technology, and discloses a milling and planing material drying and dust removal integrated processing device, which comprises a rack serving as a supporting carrier of the whole device, a receiving box arranged at the bottom of the rack and used for receiving the processed milling and planing material, an outer cylinder horizontally arranged at the top of the rack and used for providing a closed space for drying, conveying and dust collecting of the milling and planing material, and a feeding hopper obliquely arranged at one side of the rack and fixedly connected with a discharging shell at the discharging end of the feeding hopper, the discharging shell being directed towards the feeding port of the outer cylinder. The double-cylinder structure of the outer cylinder and the coaxial inner cylinder is driven by the driving motor to rotate the driving shaft, and the spiral conveying blade and the material lifting plate on the driving shaft are used to rub and disperse the milling and planing material by bidirectional shearing force and lift it upwards, so as to increase the contact area and time of the material and the heat source, avoid the problem of dry outer layer and wet inner layer in the traditional single-cylinder drying, and improve the drying uniformity and efficiency.

Description

Technical Field

[0001] This invention relates to the field of building material processing and treatment technology, specifically to an integrated processing device for drying and dust removal of milled materials. Background Technology

[0002] In the field of construction engineering, milled material is the main recycled aggregate generated during the renovation and reconstruction of asphalt pavement. Its recycling can save resources and reduce environmental pollution, and has significant economic and environmental value. Drying and dust removal are key pretreatment steps before the recycling of milled material, which directly affect the subsequent processing quality and resource recycling efficiency of the milled material. Therefore, the integrated treatment device for drying and dust removal of milled material has become one of the core equipment in the industry.

[0003] In existing technologies, most mainstream milling material drying devices adopt a single-cylinder horizontal structure. A drive shaft drives spiral blades to transport the milling material, while hot air is simultaneously introduced into the cylinder to complete the drying process. The dust removal system is usually connected to the drying cylinder via pipes, using a blower to adsorb dust under negative pressure. Some devices also incorporate a combination of cyclone separators and bag filters to improve dust removal efficiency. However, in practical applications, these existing devices still have significant technical problems: within the single-cylinder drying structure, the milling material moves solely by the pushing force of the spiral blades, making it prone to agglomeration and clumping. This results in limited contact area and uneven contact time with hot air, generally leading to incomplete drying with a "dry outer layer and wet inner layer," resulting in poor drying efficiency and material quality stability. Although the drying and dust removal systems are connected, they lack deep linkage design. Dust collection relies on single negative pressure adsorption, making it difficult to keep up with the drying rhythm in real time. This not only limits dust collection efficiency but also allows some fine dust to escape, causing environmental pollution. Furthermore, dust accumulation inside the drying cylinder may affect heat exchange efficiency.

[0004] To address these issues, those skilled in the art propose an integrated drying and dust removal device for milling materials. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an integrated processing device for drying and removing dust from milling materials, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an integrated treatment device for drying and removing dust from milling materials, comprising: The frame serves as the supporting carrier for the entire device, and the bottom of the frame is equipped with a storage box for receiving the milled material after processing. The outer cylinder, horizontally installed on the top of the frame, provides an enclosed space for drying, conveying, and collecting milling material; The feeding hopper is installed at an incline on one side of the frame. The discharge end of the feeding hopper is fixedly connected to the discharge shell, which faces the feed inlet of the outer cylinder and is used to store and convey the milling material to be processed into the outer cylinder. The inner cylinder is coaxially rotatably disposed inside the outer cylinder. Multiple spiral guide plates are welded to the inner side of the inner cylinder along the axial direction. Two spaced mounting rings are fixedly connected to the outer side of the inner cylinder. An annular groove adapted to the shape of the mounting ring is opened on the inner side of the outer cylinder. The mounting ring is rotatably disposed in the annular groove to realize the rotational engagement of the inner cylinder. The drive motor is fixedly installed on the motor base on the top side of the frame. Its output end is fixedly connected to the drive shaft along the axial direction of the inner cylinder. The drive shaft passes through the inner cylinder, and a spiral conveying blade is fixedly connected to one side of the drive shaft inside the inner cylinder. Multiple lifting plates evenly distributed around the drive shaft are fixedly connected to the other side of the inner cylinder.

[0007] Preferably, a toothed ring is fixedly connected to the outer side of one of the mounting rings, a second synchronous pulley is fixedly connected to the outer side of the drive shaft extending out of the inner cylinder, the second synchronous pulley is connected to a first synchronous pulley via a synchronous belt, the first synchronous pulley is fixedly connected to a drive shaft, a drive gear is fixedly connected to one end of the drive shaft, and the toothed ring meshes with the drive gear; When the drive motor starts, the drive shaft drives the second synchronous wheel to rotate. The second synchronous wheel drives the first synchronous wheel and the transmission shaft to rotate through the synchronous belt. The transmission shaft drives the inner cylinder to rotate in the opposite direction of the drive shaft through the meshing of the drive gear and the gear ring, thereby realizing the bidirectional kneading and dispersion of the milled material.

[0008] Preferably, it also includes a heat recovery assembly, which includes a hot air generator installed on the other side of the top of the frame. The output end of the hot air generator is welded with a connecting pipe. The end of the connecting pipe away from the hot air generator passes through the wall of the outer cylinder and communicates with the inside of the outer cylinder, for conveying high-temperature hot air into the outer cylinder.

[0009] Preferably, it also includes a uniform feeding component, which includes a connecting shaft rotatably mounted on the outer wall of the outer cylinder via a bearing. Both ends of the connecting shaft are fixedly mounted with bevel gears. A fixed cylinder is installed on one side of the top of the outer cylinder. A fixed shaft is movably connected to the inner side of the fixed cylinder via a bearing. Multiple rotating rods are fixedly connected at equal intervals to the outer side of the fixed shaft. The outer surface of the fixed cylinder is sequentially connected to a feeding trough 1 and a feeding trough 2. The inlet end of the feeding trough 1 is connected to the feeding hopper, and the outlet end of the feeding trough 2 is connected to the inside of the outer cylinder. A bevel gear 2 is fixedly connected to one end of the fixed shaft and the outer side of the transmission shaft. The two bevel gears 1 are respectively meshed with the bevel gear 2 at the corresponding positions. The rotation of the transmission shaft drives the bevel gear 2 at the bottom to rotate. The bevel gear 2 drives the bevel gear 1 and the connecting shaft to rotate. The connecting shaft drives the fixed shaft and the rotating rod to rotate through the bevel gear 1 at the top. The milling material conveyed by the upper hopper is evenly guided to the lower hopper 2 through the lower hopper 1 and finally falls smoothly into the inner cavity of the outer cylinder.

[0010] Preferably, a placement rack is provided on one side of the top of the frame, a cyclone separator is installed on the top of the placement rack, a bag filter dust collector is installed at the bottom output end of the cyclone separator, an induced draft fan is installed on the top of the cyclone separator, the input end of the induced draft fan is connected to the air outlet of the cyclone separator, and the output end of the induced draft fan is connected to a connecting pipe. The induced draft fan provides negative pressure to achieve graded collection of dust. A heat recovery pipe is connected to the outside of the air outlet of the bag filter dust collector. The end of the heat recovery pipe away from the bag filter dust collector is connected to the air inlet port of a hot air generator to achieve the recycling of hot air.

[0011] Preferably, it further includes an anti-clogging component, which includes a first transmission gear fixed to one end of the drive shaft, a second transmission gear meshing with the first transmission gear, a connecting shaft fixedly inserted inside the second transmission gear, and a plurality of unblocking steel brushes uniformly fixed to the outside of the connecting shaft; the end of the connecting shaft away from the second transmission gear passes through the wall of the outer cylinder and extends into the interior of the inner cylinder, and the penetration point between the connecting shaft and the outer cylinder is sealed by a sealing bearing. When the drive shaft rotates, it drives the first transmission gear to rotate, and the first transmission gear drives the second transmission gear and the connecting shaft to rotate synchronously. The connecting shaft drives the unblocking steel brushes to rotate inside the inner cylinder, agitating and unblocking the accumulated milling material to prevent the inner cylinder from clogging.

[0012] Preferably, the spiral direction of the spiral guide plate is opposite to that of the spiral conveying blade. When the inner cylinder rotates in the opposite direction to the drive shaft, the kneading and dispersing effect of the milled material is enhanced through the opposing action of the spiral guide plate and the spiral conveying blade.

[0013] Preferably, an annular pipe is fixedly connected to the end of the connecting pipe away from the induced draft fan. The annular pipe is coaxially sleeved on the outside of the feed end of the outer cylinder, and multiple absorption pipes are evenly arranged on the outer surface of the end of the annular pipe facing the inside of the outer cylinder. The absorption pipes penetrate the cylinder wall of the outer cylinder and extend into the inside of the outer cylinder to absorb the dust airflow in the outer cylinder from all directions.

[0014] Preferably, the rotating rods are evenly distributed around the fixed axis, and a wear-resistant rubber sleeve is provided on the outer side of the rotating rods. When the rotating rods rotate, they come into contact with the milling material through the rubber sleeve, which ensures the uniformity of material feeding and avoids excessive wear of the milling material.

[0015] Preferably, the outer cylinder has a double-layer structure with insulation cotton filling the space between the two layers to reduce heat loss from the outer cylinder. The inner cylinder has multiple ventilation holes on its wall to allow hot air to circulate between the outer and inner cylinders.

[0016] This invention provides an integrated drying and dust removal device for milling materials. It has the following beneficial effects: 1. This invention forms a double-cylinder structure by using an outer cylinder and an inner cylinder coaxially rotatably mounted inside it. A drive motor drives the drive shaft to rotate, and through the transmission cooperation of synchronous pulley two, synchronous pulley one, transmission shaft, and drive gear and gear ring, the inner cylinder rotates in the opposite direction of the drive shaft. With the help of the spiral conveying blades fixed on the drive shaft and multiple lifting plates evenly distributed circumferentially, the milled material is fully kneaded and dispersed under the bidirectional shearing force generated by the reverse rotation of the double cylinders. At the same time, the lifting plates can lift the milled material at the bottom of the inner cylinder upwards, which greatly increases the contact area and contact time between the milled material and the drying heat source. This effectively avoids the problem of the outer layer being dry and the inner layer being wet caused by the agglomeration and clumping of milled material in traditional single-cylinder drying equipment, and significantly improves the uniformity and efficiency of milled material drying.

[0017] 2. This invention uses a blower to provide negative pressure, driving the hot, humid air carrying dust and moisture inside the outer cylinder through the absorption pipe, annular pipe, and connecting pipe two into the dust collection assembly. First, a cyclone separator achieves initial separation of large dust particles, then a bag filter completes deep purification of fine dust, forming a graded collection dust collection effect. This effectively improves dust collection efficiency and avoids filter bag clogging. Simultaneously, the hot air purified by the bag filter flows back to the air inlet of the hot air generator through a heat recovery pipe, achieving hot air recycling, significantly reducing heat loss, and lowering energy consumption during the drying process. Furthermore, the dust generated during drying is drawn into the dust collection system in real time by negative pressure, preventing dust overflow and environmental pollution. This achieves deep linkage between drying and dust collection, balancing processing efficiency, environmental protection requirements, and energy-saving effects.

[0018] 3. This invention utilizes the meshing transmission between bevel gear one and bevel gear two between the transmission shaft and the fixed shaft. The rotation of the transmission shaft synchronously drives the connecting shaft and the fixed shaft to rotate, causing the rotating rod on the fixed shaft to rotate inside the fixed cylinder. This precisely guides the milling material conveyed by the feeding hopper through the feeding trough one to the feeding trough two, achieving uniform and stable feeding of the milling material into the outer cylinder. This effectively avoids problems such as insufficient drying and localized overheating caused by material accumulation and uneven feeding in traditional feeding methods. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the material feeding shell structure of the present invention; Figure 3This is a schematic diagram of the connecting pipe structure of the present invention; Figure 4 This is a schematic diagram of the spiral conveyor blade structure of the present invention; Figure 5 This is a schematic diagram of the inner cylinder structure of the present invention; Figure 6 This is a schematic diagram of the lifting plate structure of the present invention; Figure 7 This is a schematic diagram of the unblocking steel brush structure of the present invention; Figure 8 This is a cross-sectional view of the fixed cylinder of the present invention; Figure 9 for Figure 2 Enlarged view of point A in the middle; Figure 10 for Figure 1 Enlarged view of point B in the middle.

[0020] The components are as follows: 1. Frame; 2. Feeding hopper; 3. Storage box; 4. Outer cylinder; 5. Drive motor; 6. Cyclone separator; 7. Hot air generator; 8. Heat recovery pipe; 9. Connecting pipe one; 10. Connecting pipe two; 11. Inner cylinder; 12. Annular pipe; 13. Drive shaft; 14. Spiral guide plate; 15. Lifting plate; 16. Mounting ring; 17. Gear ring; 18. Discharge shell; 19. Fixed cylinder; 20. Placement rack; 21. Transmission shaft; 22. Synchronous pulley one; 23. Synchronous pulley two; 24. Drive gear; 25. Spiral conveyor blade; 26. Transmission gear one; 27. Transmission gear two; 28. Connecting shaft; 29. ​​Discharge chute one; 30. Fixed shaft; 31. Rotating rod; 32. Discharge chute two; 33. Connecting shaft; 34. Bevel gear one; 35. Bevel gear two; 36. Unclogging steel brush; 37. Absorption pipe. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see the appendix Figure 1 - Appendix Figure 10 This invention provides an integrated treatment device for drying and removing dust from milling materials, comprising: The frame 1 serves as the supporting carrier for the entire device, and the bottom of the frame 1 is equipped with a storage box 3 for receiving the milled material after processing. The outer cylinder 4 is horizontally installed on the top of the frame 1 and is used to provide an enclosed space for drying, conveying and collecting milling materials. The feeding hopper 2 is installed at an angle on one side of the frame 1. The discharge end of the feeding hopper 2 is fixedly connected to the discharge shell 18. The discharge shell 18 faces the feed inlet of the outer cylinder 4 and is used to store and convey the milling material to be processed into the outer cylinder 4. The inner cylinder 11 is coaxially rotatably disposed inside the outer cylinder 4. Multiple spiral guide plates 14 are welded to the inner side of the inner cylinder 11 along the axial direction. Two spaced mounting rings 16 are fixedly connected to the outer side of the inner cylinder 11. An annular groove adapted to the shape of the mounting rings 16 is opened on the inner side of the outer cylinder 4. The mounting rings 16 are rotatably disposed in the annular groove to realize the rotational engagement of the inner cylinder 11. The spiral direction of the spiral guide plate 14 is opposite to the spiral direction of the spiral conveying blade 25. When the inner cylinder 11 rotates in the opposite direction to the drive shaft 13, the kneading and dispersing effect of the milled material is enhanced through the opposing action of the spiral guide plate 14 and the spiral conveying blade 25.

[0023] Specifically, when the spiral conveyor blades 25 rotate with the drive shaft 13, they provide a pushing force along the axial direction to the milling material, ensuring stable material conveying to the discharge end. Simultaneously, their spiral structure causes the material to exhibit a circumferential motion tendency along the rotation direction of the drive shaft 13. The spiral guide plate 14, with a spiral direction opposite to that of the spiral conveyor blades 25 and rotating in the opposite direction with the inner cylinder 11, applies a reverse circumferential thrust and axial resistance force to the material, forming shearing and frictional forces opposite to those of the spiral conveyor blades 25. This bidirectional force disrupts the adhesion between the milling material particles, causing the material to undergo violent relative rotation, collision, and kneading during axial conveying, thoroughly dispersing the agglomerated milling material into fine particles.

[0024] Meanwhile, the reverse spiral structure extends the movement path and residence time of the material in the inner cylinder 11, preventing the material from quickly passing over the hot air area; combined with the air vents on the inner cylinder 11 wall, the hot air can penetrate the dispersed material layer in all directions, so that each particle of material can fully contact the high-temperature hot air, fundamentally solving the problem of uniformity in traditional single-cylinder drying where the outer layer is heated and the inner layer is not dried, ultimately achieving a dual improvement in drying efficiency and material processing quality.

[0025] The drive motor 5 is fixedly installed on the motor base on the top side of the frame 1. Its output end is fixedly connected to the drive shaft 13 along the axial direction of the inner cylinder 11. The drive shaft 13 passes through the inner cylinder 11, and a spiral conveying blade 25 is fixedly connected to one side of the drive shaft 11 inside the inner cylinder 11. Multiple lifting plates 15 are evenly distributed around the drive shaft 13 and fixedly connected to the other side of the inner cylinder 11.

[0026] One of the mounting rings 16 is fixedly connected to a toothed ring 17 on its outer side. The drive shaft 13 is fixedly connected to a synchronous pulley 23 on the outer side of the inner cylinder 11. The synchronous pulley 23 is connected to a synchronous pulley 22 via a synchronous belt. The synchronous pulley 22 is fixedly connected to a drive shaft 21. One end of the drive shaft 21 is fixedly connected to a drive gear 24. The toothed ring 17 meshes with the drive gear 24. Specifically, the drive motor 5 serves as the sole power input source. After starting, it drives the drive shaft 13 to rotate along its own axis. The spiral conveying blades 25 inside the drive shaft 13 rotate synchronously, providing axial pushing force for the milled material inside the inner cylinder 11, ensuring stable material delivery to the discharge end. At the same time, the lifting plate 15 on the other side of the drive shaft 13 rotates with the shaft, lifting the material at the bottom of the inner cylinder 11 upwards, breaking the material layer accumulation state, and creating conditions for hot air penetration.

[0027] Meanwhile, the synchronous pulley 23 extending from the inner cylinder 11 of the drive shaft 13 transmits power to the synchronous pulley 22 via a synchronous belt, driving the transmission shaft 21 to rotate. The drive gear 24 at one end of the transmission shaft 21 meshes with the gear ring 17 on the outer mounting ring 16 of the inner cylinder 11, utilizing the direction-reversing characteristic of gear meshing to give the inner cylinder 11 a rotational direction opposite to that of the drive shaft 13. The pushing force of the spiral conveyor blades 25 and the reverse rotational force of the inner cylinder 11 interact to generate a bidirectional shearing force, causing the material to be kneaded, collided, and dispersed simultaneously during axial conveying, preventing agglomeration and clumping. At the same time, the lifting action of the lifting plate 15, in conjunction with the double reverse rotation, further expands the contact range between the material and the hot air, ultimately achieving a simultaneous improvement in conveying efficiency and drying uniformity.

[0028] It also includes a heat recovery assembly, which includes a hot air generator 7 installed on the other side of the top of the frame 1. A connecting pipe 9 is welded to the output end of the hot air generator 7. The end of the connecting pipe 9 away from the hot air generator 7 passes through the cylinder wall of the outer cylinder 4 and is connected to the inside of the outer cylinder 4 for conveying high-temperature hot air into the outer cylinder 4.

[0029] Specifically, the hot air generator 7 serves as the core heat source, generating high-temperature hot air through fuel combustion or electrothermal conversion. Its output connecting pipe 9 provides a directional delivery channel for the hot air, precisely guiding it into the enclosed space inside the outer cylinder 4. The outer cylinder 4, as the drying chamber, forms a sandwich with the inner cylinder 11, and the material channel inside the inner cylinder 11 provides a sealed environment for heat exchange between the hot air and the milled material. The vents in the inner cylinder 11 wall allow the hot air to penetrate the material layer and fully contact the kneaded, dispersed, and lifted milled material. Through heat conduction and convection, the moisture in the material is quickly removed, completing the drying process.

[0030] Meanwhile, the double-layer insulation structure of the outer cylinder 4 reduces the loss of heat from the hot air to the outside, ensuring the stability of the drying temperature inside the cylinder; the heat recovery pipe 8, which is linked with the dust removal components, can return the purified waste heat to the hot air generator 7, so that the heat can be recycled and used. This avoids the energy waste caused by the one-time discharge of hot air in traditional drying, which not only improves the heat utilization efficiency but also reduces the energy consumption of the equipment, providing thermal protection for continuous and stable drying operations.

[0031] It also includes a uniform feeding component, which includes a connecting shaft 33 rotatably mounted on the outer wall of the outer cylinder 4 via a bearing. Both ends of the connecting shaft 33 are fixedly mounted with bevel gears 34. A fixed cylinder 19 is installed on one side of the top of the outer cylinder 4. A fixed shaft 30 is movably connected to the inner side of the fixed cylinder 19 via a bearing. Multiple rotating rods 31 are fixedly connected at equal intervals to the outer side of the fixed shaft 30. The outer surface of the fixed cylinder 19 is connected to a feeding trough 29 and a feeding trough 32 in sequence. The feeding end of the feeding trough 29 is connected to the feeding hopper 2, and the discharging end of the feeding trough 32 is connected to the inside of the outer cylinder 4. Specifically, the fixed cylinder 19 serves as a material transfer chamber, receiving the milling material conveyed by the feeding hopper 2 through the first feeding trough 29, and then precisely guiding it into the outer cylinder 4 through the second feeding trough 32. The rotating rods 31, equidistantly arranged on the outside of the fixed shaft 30, form a rotating flow guide barrier when rotating with the fixed shaft 30. Utilizing the mechanical disturbance effect of the rotating rods 31, the material in the first feeding trough 29 is evenly divided and guided to the second feeding trough 32, avoiding material congestion or fluctuating flow rate caused by gravity accumulation.

[0032] Meanwhile, the connecting shaft 33 achieves power steering and transmission through the bevel gears 34 at both ends, enabling external power to precisely drive the fixed shaft 30 to rotate synchronously, ensuring that the rotational speed of the rotating rod 31 matches the material conveying rhythm of the entire device. The uniform distribution design of the rotating rod 31 further ensures the balanced force on the material in the circumferential direction, making the material flow rate stable and controllable, ultimately achieving the effect of the milled material falling smoothly into the outer cylinder 4, providing a uniform material foundation for subsequent double-cylinder reverse kneading and drying, and sufficient hot air heat exchange. A placement rack 20 is provided on the top side of the frame 1. A cyclone separator 6 is installed on the top of the placement rack 20. A filter bag dust collector is installed at the bottom output end of the cyclone separator 6. An induced draft fan is installed on the top of the cyclone separator 6. The input end of the induced draft fan is connected to the air outlet of the cyclone separator 6. The output end of the induced draft fan is connected to a connecting pipe 10. The induced draft fan provides negative pressure power to achieve graded collection of dust. A heat recovery pipe 8 is connected to the outside of the air outlet of the filter bag dust collector. The end of the heat recovery pipe 8 away from the filter bag dust collector is connected to the air inlet port of the hot air generator 7 to achieve the recycling of hot air.

[0033] Specifically, the induced draft fan, as the power core, generates negative pressure suction after startup. This negative pressure field, formed through connecting pipe 10, annular pipe 12, and absorption pipe 37, rapidly and comprehensively draws the dust-laden, hot, and humid air generated during drying inside the outer cylinder 4 into the dust collection components. The airflow first enters the cyclone separator 6, where centrifugal force is used to separate and settle larger dust particles, completing the first-stage coarse dust removal. This prevents large dust particles from directly entering the bag filter dust collector and causing filter bag blockage, thus extending the filter bag's service life. The airflow after coarse dust removal then enters the bag filter dust collector, where the fine filtration of the filter bags traps fine dust particles, achieving the second-stage fine dust removal and ensuring the cleanliness of the discharged airflow.

[0034] Meanwhile, the humid, hot air purified by the bag filter still carries a large amount of residual heat. This heat is directed through the heat recovery pipe 8 to the air inlet of the hot air generator 7, where it mixes with fresh air and is reheated into high-temperature hot air before being reintroduced into the outer cylinder 4 for drying. This design avoids environmental pollution caused by direct emission of dust-laden airflow while maximizing the recovery and utilization of residual heat from the hot air, reducing the energy input of the hot air generator 7. It achieves the dual goals of environmental protection and energy conservation. Furthermore, the real-time linkage between negative pressure dust removal and the drying process ensures the cleanliness of the drying environment and the efficiency of heat exchange.

[0035] It also includes an anti-clogging component, which includes a transmission gear 26 fixed to one end of the drive shaft 13, a transmission gear 27 meshing with the transmission gear 26, a connecting shaft 28 fixedly inserted inside the transmission gear 27, and a plurality of unblocking steel brushes 36 evenly fixed to the outside of the connecting shaft 28. The end of the connecting shaft 28 away from the transmission gear 27 passes through the wall of the outer cylinder 4 and extends into the interior of the inner cylinder 11. The connection between the connecting shaft 28 and the outer cylinder 4 is sealed by a sealing bearing. When the drive shaft 13 rotates, it drives the transmission gear 26 to rotate. The transmission gear 26 drives the transmission gear 27 and the connecting shaft 28 to rotate synchronously. The connecting shaft 28 drives the unblocking steel brushes 36 to rotate inside the inner cylinder 11, agitating and unblocking the accumulated milling material to prevent the inner cylinder 11 from clogging.

[0036] Specifically, when the drive shaft 13 rotates, power is transmitted to the connecting shaft 28 through the meshing of transmission gear 26 and transmission gear 27, causing the connecting shaft 28 and the outer unblocking steel brush 36 to rotate synchronously inside the inner cylinder 11. The evenly distributed structure of the unblocking steel brush 36 allows it to cover the entire interior space of the inner cylinder 11 when it rotates, mechanically agitating and breaking up material accumulations and lumps caused by humidity, viscosity, or conveying resistance. At the same time, it can clean dust and material residue that may adhere to the vent holes on the inner cylinder 11 wall, preventing vent blockage from affecting hot air circulation.

[0037] In addition, the sealed bearing design at the point where the connecting shaft 28 passes through the outer cylinder 4 not only ensures the stable rotation of the connecting shaft 28, but also prevents the leakage of hot air and dust inside the outer cylinder 4, ensuring the airtightness of the device; the flexible cleaning characteristics of the unblocking steel brush 36 can effectively unblock without causing wear to the inner wall of the inner cylinder 11 and the spiral guide plate 14.

[0038] A ring pipe 12 is fixedly connected to the end of the connecting pipe 10 away from the induced draft fan. The ring pipe 12 is coaxially sleeved on the outside of the feed end of the outer cylinder 4, and multiple absorption pipes 37 are evenly arranged on the outer surface of the end of the ring pipe 12 facing the inside of the outer cylinder 4. The absorption pipes 37 penetrate the cylinder wall of the outer cylinder 4 and extend into the inside of the outer cylinder 4 to absorb the dust airflow inside the outer cylinder 4 in all directions. The rotating rod 31 is evenly distributed around the fixed shaft 30, and a wear-resistant rubber sleeve is sleeved on the outside of the rotating rod 31. When the rotating rod 31 rotates, it contacts the milling material through the rubber sleeve, which ensures the uniformity of material feeding and avoids excessive wear of the milling material.

[0039] Specifically, the annular tube 12 is coaxially sleeved on the outside of the feed end of the outer cylinder 4, forming a surrounding airflow collection channel. Combined with the negative pressure generated by the induced draft fan, a stable negative pressure field is created inside the annular tube 12. Multiple absorption tubes 37 are evenly arranged at the end of the annular tube 12 facing the inner cylinder 11, and these absorption tubes 37 extend into the interior of the outer cylinder 4, allowing the negative pressure adsorption force to evenly cover the entire interior space of the outer cylinder 4, avoiding the dust escape problem caused by traditional single-point adsorption. Whether the dust is generated in the interlayer between the outer cylinder 4 and the inner cylinder 11, or inside the inner cylinder 11, it can be quickly captured by the nearest absorption tube 37 and introduced into the dust collection assembly through the annular tube 12 and connecting pipe 10, ensuring comprehensive and timely dust collection while preventing dust accumulation inside the cylinder from affecting heat exchange efficiency.

[0040] The outer cylinder 4 has a double-layer structure with insulation cotton filling the space between the two layers to reduce heat loss from the outer cylinder 4. The inner cylinder 11 has multiple ventilation holes on its wall to allow hot air to circulate between the outer cylinder 4 and the inner cylinder 11.

[0041] Specifically, the outer cylinder 4 adopts a double-layer cylinder wall and is filled with thermal insulation cotton. Utilizing the low thermal conductivity of the thermal insulation cotton, a thermal barrier layer is formed inside and outside the cylinder wall to reduce the heat exchange between the high-temperature hot air inside the outer cylinder 4 and the external environment, thereby avoiding rapid heat loss and maintaining the stable high-temperature environment required for drying inside the cylinder. This ensures the continuity and uniformity of the milling material drying process and reduces the energy consumption of the hot air generator 7.

[0042] Working principle: First, start the drive motor 5 and hot air generator 7. After the equipment is preheated to the set temperature, put the milling material to be processed into the feeding hopper 2. The material is initially guided by the feeding shell 18 to the feeding trough 29 of the uniform feeding component. At this time, the output end of the drive motor 5 drives the drive shaft 13 to rotate. The synchronous pulley 23 on the outside of the drive shaft 13 drives the synchronous pulley 22 and the transmission shaft 21 to rotate synchronously through the synchronous belt. When the transmission shaft 21 rotates, the bevel gear 35 on its outside meshes with the bevel gear 34 at the lower end of the connecting shaft 33, driving the connecting shaft 33 to rotate. Then, through the bevel gear 34 at the upper end of the connecting shaft 33 and the bevel gear 35 at one end of the fixed shaft 30, the fixed shaft 30 and the rotating rod 31 on its outside are driven to rotate in the fixed cylinder 19. The rotating rod 31 contacts the material through the outer wear-resistant rubber sleeve, and guides the milling material in the first discharge trough 29 to the second discharge trough 32, and finally falls smoothly into the cavity between the outer cylinder 4 and the inner cylinder 11 and into the inner cylinder 11, so as to avoid material accumulation or uneven discharge.

[0043] Meanwhile, the drive gear 24 at one end of the drive shaft 21 meshes with the gear ring 17 on the outer mounting ring 16 of the inner cylinder 11, driving the inner cylinder 11 to rotate in the opposite direction to the drive shaft 13. The spiral guide plate 14 welded to the inner side of the inner cylinder 11 and the spiral conveying blade 25 have opposite spiral directions. Their opposite rotation creates a bidirectional shearing force, which fully kneads and disperses the milled material entering the inner cylinder 11. At the same time, the lifting plate 15 on the other side of the drive shaft 13 rotates with the shaft, lifting the material at the bottom of the inner cylinder 11 upwards. Combined with the vent holes in the inner cylinder 11 wall, the hot air can penetrate the material layer in all directions. The high-temperature hot air generated by the hot air generator 7 is introduced into the outer cylinder 4 through the connecting pipe 9. It circulates with the inner cylinder 11 through the cavity between the vent holes and the inner cylinder 11, and fully contacts the dispersed and lifted milled material, quickly evaporating the moisture in the material and achieving efficient drying. The insulation cotton in the double-layer cylinder wall of the outer cylinder 4 effectively reduces heat loss and ensures stable drying temperature.

[0044] Dust generated during the drying process, along with humid hot air carrying moisture, is drawn by the negative pressure of the induced draft fan through multiple absorption pipes 37 inside the outer cylinder 4 into the annular pipe 12, and then enters the dust collection assembly via connecting pipe 10. First, the humid hot air undergoes primary treatment by the cyclone separator 6, using centrifugal force to separate large dust particles. The remaining airflow containing fine dust enters the bag filter for secondary deep purification. The purified clean hot air is then returned to the inlet port of the hot air generator 7 through the heat recovery pipe 8, where it mixes with newly generated high-temperature hot air and is recycled, reducing energy consumption.

[0045] In addition, when the drive shaft 13 rotates, it also drives the transmission gear 26 at one end to rotate. The transmission gear 26 meshes with the transmission gear 27, driving the connecting shaft 28 and the unblocking steel brush 36 on the outside to rotate synchronously inside the inner cylinder 11. This agitates and unblocks any material that may accumulate, preventing blockage of the inner cylinder 11 or the vent holes and ensuring smooth material conveying and hot air circulation. After drying, the milled material is pushed by the spiral conveyor blades 25 and finally discharged from the discharge end of the outer cylinder 4, falling into the collection box 3 at the bottom of the frame 1 for collection.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated treatment device for drying and removing dust from milling materials, characterized in that, include: The frame (1) serves as the support carrier for the entire device, and the bottom of the frame (1) is provided with a storage box (3) for receiving the milled material after processing. The outer cylinder (4) is horizontally installed on the top of the frame (1) to provide a closed space for drying, conveying and collecting milling materials; The feeding hopper (2) is installed at an angle on one side of the frame (1). The discharge end of the feeding hopper (2) is fixedly connected to the discharge shell (18). The discharge shell (18) faces the feed inlet of the outer cylinder (4) and is used to store and convey the milling material to be processed into the outer cylinder (4). The inner cylinder (11) is coaxially rotatably disposed inside the outer cylinder (4). Multiple spiral guide plates (14) are welded to the inner side of the inner cylinder (11) along the axial direction. Two spaced mounting rings (16) are fixedly connected to the outer side of the inner cylinder (11). An annular groove adapted to the shape of the mounting ring (16) is opened on the inner side of the outer cylinder (4). The mounting ring (16) is rotatably disposed in the annular groove to realize the rotational engagement of the inner cylinder (11). The drive motor (5) is fixedly installed on the motor seat on the top side of the frame (1). Its output end is fixedly connected to the drive shaft (13) along the axis of the inner cylinder (11). The drive shaft (13) passes through the inner cylinder (11) and is fixedly connected to a spiral conveying blade (25) on one side inside the inner cylinder (11). On the other side of the inner cylinder (11), a plurality of lifting plates (15) are fixedly connected to the drive shaft (13) and evenly distributed around it.

2. The integrated processing device for drying and dust removal of milling materials according to claim 1, characterized in that... One of the mounting rings (16) is fixedly connected to a toothed ring (17) on its outer side. The drive shaft (13) is fixedly connected to a synchronous pulley two (23) on the outer side of the inner cylinder (11). The synchronous pulley two (23) is connected to a synchronous pulley one (22) via a synchronous belt. The synchronous pulley one (22) is fixedly connected to a drive shaft (21). One end of the drive shaft (21) is fixedly connected to a drive gear (24). The toothed ring (17) meshes with the drive gear (24). When the drive motor (5) starts, the drive shaft (13) drives the second synchronous wheel (23) to rotate. The second synchronous wheel (23) drives the first synchronous wheel (22) and the transmission shaft (21) to rotate through the synchronous belt. The transmission shaft (21) drives the inner cylinder (11) to rotate in the opposite direction of the drive shaft (13) through the meshing of the drive gear (24) and the gear ring (17), thereby realizing the bidirectional kneading and dispersion of the milled material.

3. The integrated processing device for drying and dust removal of milling materials according to claim 2, characterized in that, It also includes a heating recovery assembly, which includes a hot air generator (7) installed on the other side of the top of the frame (1). The output end of the hot air generator (7) is welded with a connecting pipe (9). The end of the connecting pipe (9) away from the hot air generator (7) passes through the wall of the outer cylinder (4) and is connected to the inside of the outer cylinder (4) for conveying high-temperature hot air into the outer cylinder (4).

4. The integrated milling material drying and dust removal treatment device according to claim 3, characterized in that, It also includes a uniform feeding component, which includes a connecting shaft (33) rotatably mounted on the outer wall of the outer cylinder (4) via a bearing. Both ends of the connecting shaft (33) are fixedly mounted with bevel gears (34). A fixed cylinder (19) is installed on one side of the top of the outer cylinder (4). A fixed shaft (30) is movably connected to the inner side of the fixed cylinder (19) via a bearing. Multiple rotating rods (31) are fixedly connected at equal intervals to the outer side of the fixed shaft (30). The outer surface of the fixed cylinder (19) is connected to a feeding trough (29) and a feeding trough (32) in sequence. The feeding end of the feeding trough (29) is connected to the feeding hopper (2), and the discharging end of the feeding trough (32) is connected to the inside of the outer cylinder (4). One end of the fixed shaft (30) and the outer side of the transmission shaft (21) are both fixedly connected to bevel gears (35). The two bevel gears (34) are respectively meshed with the bevel gears (35) at the corresponding positions. The rotation of the transmission shaft (21) drives the bevel gears (35) at the bottom to rotate. The bevel gears (35) drive the bevel gears (34) and the connecting shaft (33) to rotate. The connecting shaft (33) drives the fixed shaft (30) and the rotating rod (31) to rotate through the bevel gears (34) at the top. The milling material conveyed by the hopper (2) is evenly guided to the discharge trough (32) through the discharge trough (29) and finally falls smoothly into the inner cavity of the outer cylinder (4).

5. The integrated milling material drying and dust removal treatment device according to claim 4, characterized in that, A placement rack (20) is provided on one side of the top of the frame (1). A cyclone separator (6) is installed on the top of the placement rack (20). A filter bag dust collector is installed at the bottom output end of the cyclone separator (6). An induced draft fan is installed on the top of the cyclone separator (6). The input end of the induced draft fan is connected to the air outlet of the cyclone separator (6). The output end of the induced draft fan is connected to a connecting pipe (10). The induced draft fan provides negative pressure power to achieve graded collection of dust. A heat recovery pipe (8) is connected to the outside of the air outlet of the filter bag dust collector. The end of the heat recovery pipe (8) away from the filter bag dust collector is connected to the air inlet port of the hot air generator (7) to achieve the recycling of hot air.

6. The integrated processing device for drying and dust removal of milling materials according to claim 1, characterized in that, It also includes an anti-clogging component, which includes a transmission gear one (26) fixed to one end of the drive shaft (13), a transmission gear two (27) meshing with the transmission gear one (26), a connecting shaft (28) fixedly inserted inside the transmission gear two (27), and a plurality of unblocking steel brushes (36) uniformly fixed to the outside of the connecting shaft (28); the end of the connecting shaft (28) away from the transmission gear two (27) passes through the wall of the outer cylinder (4) and extends into the interior of the inner cylinder (11), and the connection between the connecting shaft (28) and the outer cylinder (4) is sealed by a sealing bearing. When the drive shaft (13) rotates, it drives the transmission gear one (26) to rotate. The transmission gear one (26) drives the transmission gear two (27) and the connecting shaft (28) to rotate synchronously. The connecting shaft (28) drives the unblocking steel brushes (36) to rotate inside the inner cylinder (11) to agitate and unblock the accumulated milling material and prevent the inner cylinder (11) from clogging.

7. The integrated milling material drying and dust removal treatment device according to claim 1, characterized in that, The spiral direction of the spiral guide plate (14) is opposite to that of the spiral conveying blade (25). When the inner cylinder (11) and the drive shaft (13) rotate in opposite directions, the kneading and dispersing effect of the milled material is enhanced by the reverse action of the spiral guide plate (14) and the spiral conveying blade (25).

8. The integrated milling material drying and dust removal treatment device according to claim 5, characterized in that, The end of the connecting pipe 2 (10) away from the induced draft fan is fixedly connected to an annular pipe (12). The annular pipe (12) is coaxially sleeved on the outside of the feed end of the outer cylinder (4). A plurality of absorption pipes (37) are evenly arranged on the outer surface of the end of the annular pipe (12) facing the inside of the outer cylinder (4). The absorption pipes (37) penetrate the cylinder wall of the outer cylinder (4) and extend into the inside of the outer cylinder (4) to absorb the dust airflow inside the outer cylinder (4) in all directions.

9. The integrated processing device for drying and dust removal of milling materials according to claim 4, characterized in that, The rotating rod (31) is evenly distributed around the fixed shaft (30), and a wear-resistant rubber sleeve is provided on the outer side of the rotating rod (31). When the rotating rod (31) rotates, it contacts the milling material through the rubber sleeve, which ensures the uniformity of material feeding and avoids excessive wear of the milling material.

10. The integrated processing device for drying and dust removal of milling materials according to claim 1, characterized in that, The outer cylinder (4) has a double-layer structure with insulation cotton filling between the two layers to reduce heat loss inside the outer cylinder (4). The inner cylinder (11) has multiple ventilation holes on its wall to allow hot air to circulate between the outer cylinder (4) and the inner cylinder (11).

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