Feeding device for asphalt production

Abstract

The invention provides a feeding device for asphalt production, and belongs to the technical field of asphalt production, the feeding device comprises a body, a side shell is arranged on one side of the body, a hopper and a spiral conveyor are assembled in the side shell, a material dispersing assembly for dispersing materials is arranged in the hopper, an upper shell is arranged above the side shell, and the spiral conveyor is arranged above the upper shell. A sliding rail is arranged on the inner side of the upper shell, and a lifting assembly used for driving the sliding rail to move up and down in the vertical direction is arranged on the upper shell. A mounting frame is slidably assembled on the sliding rail, and a displacement assembly is further arranged on the sliding rail and used for driving the mounting frame to move in the axis direction of the sliding rail. On one hand, the convenience and labor-saving performance of operation are improved, the manual operation intensity is reduced, and the occupational health of operators is guaranteed; on the other hand, a solid foundation is laid for subsequent production procedures, it is ensured that the material feeding link is continuously and orderly carried out, and production interruption is avoided.

Description

Technical Field

[0001] This application relates to the field of asphalt production technology, specifically to a feeding device for asphalt production. Background Technology

[0002] Asphalt mixtures, often simply referred to as "asphalt" in engineering practice, are engineering materials composed of asphalt as a binder, aggregates, fillers, and functional additives. They are commonly used in road surface layers, parking lot paving, and other municipal pavement structures. During the production process, the addition of specific materials can effectively improve the key properties of asphalt mixtures, such as resistance to rutting, cracking, and water damage, thereby meeting the usage requirements of different engineering scenarios.

[0003] Adding fibrous materials to asphalt mixtures can significantly optimize their performance, with lignin fibers being a commonly used component. Adding an appropriate amount of lignin fiber to asphalt mixtures can effectively enhance their shrinkage resistance and low-temperature crack resistance. In actual production processes, lignin fibers are often packaged in bags (to ensure packing density, the fibers inside the bags are usually compressed). After entering the hopper of the feeding machine, the machine's built-in dispersion components break up any agglomerated fibers formed during compression, ensuring the fibers are loose. This lays the foundation for subsequent precise weighing and uniform mixing processes, preventing uneven fiber dispersion from affecting the final performance of the asphalt mixture.

[0004] Referring to Chinese patent document CN222240097U, entitled "A Flocculent Feeding Machine for Asphalt Production," the device includes a feeding box with a feeding port at the top and a conveying pipe connected to a mixer at the bottom. A bottom plate is inclined inside the feeding box, with the side of the bottom plate closer to the conveying pipe lower than the side farther from the pipe. Two dispersing shafts are rotatably connected inside the feeding box, with both shafts inclined at the same angle to the bottom plate along their length. Several dispersing blades are arranged along the length of each shaft. This feeding machine, through two sets of dispersing mechanisms, can quickly disperse agglomerated flocculent materials, allowing the dispersed material to smoothly enter the mixer via the conveying pipe for mixing with asphalt.

[0005] While the above-mentioned technical solutions can improve the dispersion efficiency of lignin fibers through two sets of dispersing mechanisms, the following drawbacks still exist in practical applications: First, the initial feeding of lignin fibers relies entirely on manual labor. Workers need to manually unpack the packaging bags and pour the pressed fibers into the feeding machine hopper, which not only results in low automation but also makes it difficult to match the continuous needs of the production line with feeding efficiency. Second, in order to ensure the continuity of subsequent processes, the dispersing mechanism needs to operate at high speed continuously. Its impact and kneading action on the fibers will generate a large amount of suspended fiber dust, and workers who are exposed to it for a long time are prone to occupational health risks. Summary of the Invention

[0006] In view of this, this application provides a feeding device for asphalt production, which is mainly used to solve the problem that the feeding device for asphalt production requires manual feeding, resulting in low feeding efficiency and significant health risks.

[0007] To solve the above-mentioned technical problems, this application provides a feeding device for asphalt production, including a main body. A side shell is provided on one side of the main body. A hopper and a screw conveyor are assembled inside the side shell. A material dispersing component for dispersing materials is provided inside the hopper. An upper shell is provided above the side shell. A slide rail is provided on the inner side of the upper shell. A lifting component for driving the slide rail to move up and down in a vertical direction is provided on the upper shell. A mounting frame is slidably mounted on the slide rail. A displacement component is also provided on the slide rail for driving the mounting frame to move along the axis of the slide rail. A first movable plate and a second movable plate are respectively hinged to the bottom two sides of the mounting frame. A movable frame and a second linear actuator are provided on the first movable plate and the second movable plate. A rod is provided on the movable frame. A driving component for driving the first movable plate and the second movable plate to rotate around the hinge point is provided on the mounting frame. A plate is fixedly connected to the top of one side of the side shell. A cutter is provided in the middle of the side plate near the hopper. A material discharge port is provided on the side of the side shell away from the plate.

[0008] By adopting the above technical solution, after the packaged material is placed on the flat plate, the lifting component drives the slide rail to move downwards, causing the insertion rod to move to a suitable height. Subsequently, the second linear actuator drives the two movable frames to move towards each other, causing the insertion rod to insert into both sides of the top of the packaged material; the displacement component further drives the mounting frame, causing the packaged material to move smoothly along the slide rail axis. When the packaged material passes the cutter, the bottom of its packaging bag is cut open, and the material falls out from the opening. Immediately afterwards, the drive component drives the first and second movable plates to rotate synchronously, and the ends of the plates away from the mounting frame tilt upwards, thereby causing the insertion rod to flip downwards relative to the packaged material—on the one hand, this can cause the residual material in the bag to fall quickly, ensuring that the material is completely emptied; on the other hand, it can squeeze and break up the caking material, which not only creates favorable conditions for the subsequent material dispersion process, but also improves the material dispersion efficiency and reduces the processing pressure of the dispersion process. Compared with the traditional manual feeding method, this device can realize automated feeding operation: it is not only convenient and labor-saving to operate, effectively replacing manual operation; it can also avoid the long-term exposure of operators to dust, fundamentally protecting the health of the workers.

[0009] Optionally, the hopper is provided with a plurality of horizontal bars arranged in a linear pattern above it, and a plurality of levers are provided on the upper surface of the horizontal bars. The levers on adjacent horizontal bars are staggered and are made of rubber.

[0010] By adopting the above technical solution, after the bottom of the packaged material is cut open, the bottom of the bag will come into contact with the lever on the crossbar during its continuous movement. Through the interaction between the two, the slab or clump of material can be further broken up, effectively reducing the volume of material clumps and laying a stable foundation for subsequent material dispersion processes, thereby significantly improving the efficiency of subsequent material dispersion.

[0011] Optionally, a nozzle is provided on the top of the side of the upper housing near the flat plate, and a strip-shaped through hole adapted to the spray path of the nozzle is provided on the flat plate. An air inlet pipe connected to the nozzle is provided on the upper housing.

[0012] By adopting the above technical solution, the air inlet pipe, which is connected to an external air source, can continuously provide a stable airflow to the nozzle. This airflow can fully cover the feed inlet area of ​​the upper shell, thereby forming an airflow barrier at the feed inlet. This design can effectively prevent the smoke and dust generated during the material feeding process from overflowing from the feed inlet of the upper shell, thereby reducing the impact on the surrounding environment.

[0013] Optionally, the lifting assembly includes a first linear driver, a guide rod, and a sleeve. The guide rod is slidably fitted inside the sleeve, and the bottom end of the guide rod is fixedly connected to the slide rail. The output end of the first linear driver is fixedly connected to the top of the slide rail, for driving the slide rail to rise and fall along the axis of the guide rod.

[0014] Optionally, the displacement assembly includes a lead screw and a first motor. The lead screw is disposed below the slide rail, and the output end of the first motor is fixedly connected to one end of the lead screw via a coupling. The mounting bracket is threadedly connected to the lead screw.

[0015] Optionally, the inserts on the two movable frames are staggered.

[0016] By adopting the above technical solution, the contact range between the insert rod and the material can be increased. When the insert rod flips, it can achieve a better material squeezing effect: on the one hand, it can ensure that the material falls more cleanly and thoroughly, and on the other hand, it can significantly enhance the pre-dispersion effect of the material, providing convenience for subsequent processing steps.

[0017] Optionally, the drive assembly includes fixed rods fixedly connected to both sides of the bottom of the mounting frame, with a first drive component and a second drive component movably mounted on the two fixed rods respectively; a rotating shaft and a second motor are provided at the bottom of the mounting frame, with a first gear fixedly connected to one end of the rotating shaft and the other end of the rotating shaft fixedly connected to the output shaft of the second motor; the ends of the first and second movable plates away from the movable frame are both fixedly connected to the second gear, and the first and second drive components are provided with teeth that mesh with the first and second gears. When the first gear rotates, it can drive the first and second drive components to move simultaneously towards or in opposite directions, thereby driving the corresponding second gear to rotate, realizing the flipping of the first and second movable plates.

[0018] Optionally, the top of both sides of the slide rail is provided with a slide groove, and both sides of the mounting bracket are equipped with rollers that are compatible with the slide groove.

[0019] By adopting the above technical solution, the sliding friction between the mounting bracket and the slide rail can be converted into rolling friction, effectively reducing the moving resistance of the mounting bracket and ensuring that its movement is smoother and more stable; at the same time, it can significantly reduce the contact wear between the mounting bracket and the slide rail, extend the durability of key components, and ultimately improve the overall service life of the device.

[0020] Optionally, a guide pipe connected to the discharge port is provided on one side of the hopper. The guide pipe is inclined inside the side shell, and the bottom end of the guide pipe penetrates the side shell and extends to its outside, for guiding the bag body to be discharged.

[0021] By adopting the above technical solution, after the material in the material bag falls completely into the hopper, the empty material bag immediately falls into the discharge port and is discharged from the inside of the side shell along the guide pipe, which facilitates the centralized collection of the empty material bags.

[0022] Optionally, the bulk material assembly includes a dispersing rod and a third motor. The dispersing rod is located at the bottom inner side of the hopper, and the output shaft of the third motor is connected to one end of the dispersing rod via a coupling to drive the dispersing rod to rotate and disperse the material.

[0023] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects: 1. Through the coordinated action of the material grabbing and conveying mechanisms, the device ensures thorough and residue-free material unloading while simultaneously achieving pre-dispersion treatment of the material. This not only effectively reduces the dispersion load on subsequent processes but also prevents caking or agglomerated materials from accumulating and clogging the hopper. Compared to traditional feeding methods, this device can completely replace manual labor in opening bags for feeding: on the one hand, it significantly improves the convenience and labor-saving aspects of operation, fundamentally reducing the intensity of manual labor and effectively protecting the occupational health of operators; on the other hand, it lays a solid foundation for subsequent production processes, ensuring continuous and orderly material feeding and avoiding production interruptions caused by fluctuations in manual feeding efficiency or material accumulation.

[0024] 2. A crossbar and staggered levers are installed above the hopper. This structure can work in synergy with the material gripping mechanism and the conveying mechanism. It can not only further enhance the pre-dispersion effect of the material and effectively break up the residual material agglomerates, but also accelerate the material falling process, ensure that the material falls fully, and avoid the slow falling caused by the material sticking to the wall or accumulating. In the end, it can achieve the effect of no material residue and thorough material discharge, while significantly improving the overall material discharge efficiency. Attached Figure Description

[0025] Figure 1This is a schematic diagram of the overall structure of a feeding device for asphalt production according to this application; Figure 2 This is a schematic diagram of the internal structure of the hopper and upper shell in this application; Figure 3 This is a top view of the plate and hopper in this application. Figure 4 This is a schematic diagram of the overall structure of the material gripping mechanism in this application; Figure 5 This is a schematic diagram of the left-side structure of the material gripping mechanism in this application; Figure 6 This is a top view of the material gripping mechanism in this application. Figure 7 This is a cross-sectional structural diagram of the mounting frame, the first movable plate, and the second movable plate in this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Body; 11. Side shell; 12. Hopper; 121. Discharge port; 122. Guide pipe; 13. Flat plate; 131. Strip-shaped through hole; 2. Upper shell; 21. Slide rail; 211. Lead screw; 212. First motor; 213. Slide groove; 22. First linear actuator; 23. Guide rod; 24. Sleeve; 3. Mounting frame; 31. First movable plate; 32. Second movable plate; 33. Movable frame; 331. Insert rod; 332. Second linear actuator; 34. Rotating shaft; 341. Second motor; 342. First gear; 35. Fixed rod; 36. First driving component; 37. Second driving component; 38. Second gear; 39. Roller; 4. Nozzle; 41. Air inlet pipe; 5. Cutter; 6. Crossbar; 61. Pulley; 7. Dispersing rod; 71. Third motor; 8. Screw conveyor. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will be combined with the embodiments of this application. Figures 1-7 The technical solutions of the embodiments of this application are clearly and completely described herein. All other embodiments obtained by those skilled in the art based on the described embodiments are within the scope of protection of this application.

[0028] Reference Figure 1 , Figure 2 and Figure 4This embodiment provides a feeding device for asphalt production, including a main body 1, a storage and transfer mechanism, a material gripping mechanism, and a conveying mechanism. The main body 1 is the core supporting unit of the device, including a support frame, a weighing and metering system, a pneumatic conveying system, and a control and adjustment system. The support frame serves as the basic installation carrier for the entire device, providing a stable installation benchmark for each system of the main body 1 and external related mechanisms. The weighing and metering system is used to accurately measure the weight of the material to be fed, ensuring that the material input strictly meets the production ratio requirements. The pneumatic conveying system is used to accurately convey the weighed material to a designated location in the mixing plant. The control and adjustment system is used to set and adjust the device's operating parameters (such as weighing threshold, conveying pressure, etc.) according to production needs, realizing automated operation of the device. The storage and transfer mechanism is located on one side of the main body 1. Its core function is to temporarily store the material to be weighed and pre-disperse any possible caking or agglomeration in the material, laying the foundation for subsequent accurate weighing and conveying. The material gripping mechanism is located above the storage and transfer mechanism. It is used to grip packaged materials and can adjust the gripper posture to ensure the material inside the bag falls fully. The conveying mechanism is positioned above the material gripping mechanism and drives the material gripping mechanism to move along a preset trajectory, so as to accurately transfer the opened packaged materials to the inlet of the storage and transfer mechanism, completing the material connection and conveying. It should be noted that the weighing and metering system, pneumatic conveying system, and control and regulation system are all mature existing technologies in the industry, and their specific structures and working principles are well known to those skilled in the art, so they will not be described in detail here.

[0029] Among them, reference Figure 1 , Figure 2 and Figure 3The storage and transfer mechanism includes a side shell 11, a hopper 12, a bulk material assembly, a screw conveyor 8, a plate 13, a cutter 5, and a discharge port 121. The side shell 11 serves as the basic mounting frame for the storage and transfer mechanism and is fixedly assembled to one side of the main body 1. The hopper 12 is fixedly installed in the internal cavity of the side shell 11, and its inner wall is smoothly polished to prevent material from adhering to the wall. The bulk material assembly is installed at the bottom inner side of the hopper 12, and its core function is to disperse agglomerated or lumpy materials, providing loose material for subsequent screw conveying. The screw conveyor 8 is arranged at an angle, with its inlet end connected to the bottom of the hopper 12, and its outlet end connected to the inlet of the weighing and metering system inside the main body 1 via a pipeline, allowing the dispersed material in the hopper 12 to be transported to the bottom. The processed material is stably conveyed to the weighing unit; the plate 13 is fixedly set on the side of the side shell 11 away from the main body 1, and is used to temporarily support the packaged material; the cutter 5 is fixedly installed on the middle position of the side of the plate 13 near the hopper 12 through the cutter holder, with its blade facing upward and corresponding to the bottom travel path of the packaged material; when the material gripping mechanism drives the packaged material to move along the plate 13 towards the hopper 12, the cutter 5 can cut an opening at the bottom of the material packaging; the discharge port 121 is opened on the side of the side shell 11 away from the plate 13, and can be connected to the empty bag collection box below it. The bulk material assembly includes a dispersing rod 7 and a third motor 71. The third motor 71 is fixedly mounted on the side shell 11. The dispersing rod 7 includes a main shaft and several dispersing blades fixed on the main shaft. The dispersing rod 7 is rotatably set on the inner bottom of the hopper 12 through bearings. The output shaft of the third motor 71 is connected to one end of the dispersing rod 7 through a coupling.

[0030] During operation, workers simply place the packaged material in the designated area on the plate 13. The material gripping mechanism moves above the plate 13 to precisely grip and clamp the packaged material. Subsequently, the conveying mechanism drives the material gripping mechanism along a preset trajectory, simultaneously transferring the packaged material towards the hopper 12. When the packaged material moves along the plate 13 with the gripping mechanism to directly above the cutter 5, the cutter 5 cuts the bottom of the package, creating a drop opening. Under its own weight and with the assistance of the material gripping mechanism, the material falls through the opening into the hopper 12. After the material in the package has completely fallen into the hopper 12, the material gripping mechanism moves the empty bag to the drop opening 121 for release. The empty bag can then slide down through the drop opening 121 into the collection device, achieving centralized recycling of the empty bags.

[0031] Among them, reference Figure 4 , Figure 5 , Figure 6 and Figure 7The material gripping mechanism includes a mounting frame 3, a first movable plate 31, a second movable plate 32, a movable frame 33, an insertion rod 331, a second linear actuator 332, and a drive assembly. The mounting frame 3 is movably mounted on the conveying mechanism; the first movable plate 31 and the second movable plate 32 are respectively hinged to the bottom sides of the mounting frame 3; there are two sets of movable frames 33 and two sets of linear actuators 332, which are respectively set on the first movable plate 31 and the second movable plate 32. The second linear actuator 332 is fixedly connected to the first movable plate 31 or the second movable plate 32, and its output end is fixedly connected to the corresponding movable frame 33. The insertion rod 331 is fixedly connected to the movable frame 33. Each movable frame 33 is provided with two insertion rods 331. The end of the insertion rod 331 away from the movable frame 33 is designed as a pointed cone shape to facilitate insertion into the bag containing packaged materials and achieve stable gripping; the drive assembly is used to drive the first movable plate 31 and the second movable plate 32 to rotate around the hinge point. In this embodiment, the number of insertion rods 331 on the movable frame 33 can be adjusted according to the actual situation.

[0032] The drive assembly includes a rotating shaft 34, a second motor 341, a first gear 342, a fixed rod 35, a first drive member 36, a second drive member 37, and a second gear 38. The rotating shaft 34 is rotatably mounted at the bottom of the mounting frame 3. The second motor 341 is fixedly mounted on one side of the bottom of the mounting frame 3, and its output end is connected to the rotating shaft 34 via a coupling. The first gear 342 is located at the end of the rotating shaft 34 away from the second motor 341. There are two fixing rods 35, both of which are fixedly connected to the lower surface of the mounting frame 3 in the horizontal direction. The first driving member 36 and the second driving member 37 are slidably assembled on the corresponding fixing rods 35 via sliding sleeves. The first driving member 36 has a stepped structure, with teeth machined on its lower top surface to mesh with the first gear 342 and teeth machined on its upper bottom surface to mesh with the second gear 38. The second driving member 37 has a T-shaped block structure, with teeth machined on its upper surfaces on both sides. One side of the teeth meshes with the first gear 342, and the other side meshes with the second gear 38. There are two second gears 38, which are respectively located on the side of the first movable plate 31 and the second movable plate 32 near the mounting frame 3.

[0033] Once the packaged material is placed in the designated area of ​​the plate 13, the conveying mechanism drives the material gripping mechanism to move vertically downwards until the bottom surfaces of the first drive member 36 and the second drive member 37 contact the top surface of the packaged material. Subsequently, the two sets of second linear actuators 332 are activated synchronously, driving the corresponding movable frames 33 to move towards each other horizontally, so that the pointed conical inserts 331 on the first movable plate 31 and the second movable plate 32 simultaneously pierce into the material packaging bag. After the inserts 331 pierce the bag, they penetrate deep into the material, and through the coordinated clamping action of multiple inserts 331, a stable gripping of the packaged material is achieved. During the movement of the packaged material, the drive assembly drives the first movable plate 31 and the second movable plate 32 to rotate upwards around the hinge point, thereby causing the inserts 331 to rotate downwards relative to the mounting frame 3. Under the combined action of its own weight and the insertion rod 331, the densely packed material inside the bag can quickly slide from the bottom opening into the hopper 12, ensuring that no material remains after falling. At the same time, the insertion rod 331 will squeeze and loosen the caking material inside the bag during the tilting process, effectively reducing the agglomeration volume of the caking material, laying the foundation for the subsequent dispersion processing of the bulk material components, and reducing the processing load of the bulk material process.

[0034] Among them, reference Figure 2 , Figure 4 and Figure 7 The conveying mechanism includes an upper housing 2, a slide rail 21, a lifting assembly, and a displacement assembly. The upper housing 2 is fixedly mounted above the side housing 11. The slide rail 21 is horizontally arranged in the internal cavity of the upper housing 2. The mounting frame 3 is slidably mounted on the slide rail 21, which provides a guiding reference for the horizontal movement of the mounting frame 3. There are two sets of lifting assemblies, which are symmetrically distributed at both ends of the slide rail 21. This design makes the force on both ends of the slide rail 21 more even. The displacement assembly is set on the slide rail 21 and is used to drive the mounting frame 3 to move along the axial direction of the slide rail 21. The lifting assembly includes a first linear actuator 22, a guide rod 23, and a sleeve 24. The sleeve 24 is fixedly connected to the upper surface of the upper housing 2. The guide rod 23 is slidably fitted inside the sleeve 24, and the bottom end of the guide rod 23 is fixedly connected to the slide rail 21. The first linear actuator 22 is fixedly mounted on the top outer side of the upper housing 2. Its output end passes through the top wall of the upper housing 2 and is fixedly connected to the top of the slide rail 21, providing power for the lifting of the slide rail 21. The displacement assembly includes a lead screw 211 and a first motor 212. The lead screw 211 is rotatably connected to the bottom inner side of the slide rail 21. The first motor 212 is fixedly installed at one end of the slide rail 21, and its output end is fixedly connected to one end of the lead screw 211 through a coupling. The mounting bracket 3 is threadedly connected to the lead screw 211. When the lead screw 211 rotates, it can drive the mounting bracket 3 to move linearly along the slide rail 21.

[0035] The sleeve 24, in conjunction with the guide rod 23, restricts the position of the slide rail 21 during its vertical movement, ensuring smoother operation. When the height of the material gripping mechanism needs adjustment, the first linear actuator 22 is activated, controlling its output shaft to extend or retract, thereby raising or lowering the slide rail 21 and adjusting the height of the material gripping mechanism. Furthermore, the output shaft of the first motor 212 drives the lead screw 211 to rotate around its own axis. Since the mounting frame 3 is threadedly connected to the lead screw 211 and constrained by the slide rail 21, it cannot rotate with the lead screw 211. Therefore, the rotational motion of the lead screw 211 is converted into linear movement of the mounting frame 3 along the axis of the slide rail 21. By controlling the forward and reverse rotation of the first motor 212, the mounting frame 3 can be driven to move the packaged material horizontally, completing the material transfer task.

[0036] Additionally, refer to Figure 3 Above the hopper 12, there are multiple horizontal bars 6 arranged linearly. A gap is provided between two adjacent horizontal bars 6 to allow material to pass through. Multiple levers 61 are vertically fixed on the upper surface of the horizontal bars 6, and the levers 61 on two adjacent horizontal bars 6 are staggered. The levers 61 are made of rubber. On the one hand, the rubber material has a certain hardness and elasticity, which can be effectively inserted into the material to achieve a levering effect, ensuring the loosening effect on the hardened material. On the other hand, its elasticity can prevent the levers 61 from rigidly colliding with the moving packaged material, preventing significant interference with the movement trajectory of the packaging bag.

[0037] When the packaged material with the bottom already open moves above the hopper 12, the staggered levers 61 will extend into the material inside the bag in sync with the material movement. Through the continuous pushing and scraping action of the levers 61 on the material, the material inside the bag can be accelerated to fall from the opening, reducing the material residue in the bag; it can also further break up and loosen the not fully dispersed clumps or agglomerates, reduce the volume of the agglomerates, and provide favorable conditions for the subsequent dispersion of the bulk material components.

[0038] Reference Figure 1 , Figure 2 and Figure 3 A nozzle 4 is provided on the top side of the upper housing 2 near the plate 13. The length of the nozzle 4 is adapted to the width of the upper housing 2, so as to achieve full coverage spraying along the width direction of the upper housing 2. Correspondingly, a strip-shaped through hole 131 adapted to the spray path of the nozzle 4 is provided on the plate 13. An air inlet pipe 41 connected to the nozzle 4 is provided on the upper housing 2. The air inlet pipe 41 is connected to the external air source.

[0039] During operation, an external high-pressure air source continuously supplies high-pressure airflow to the nozzle 4 through the air inlet pipe 41. The airflow is atomized by the nozzle 4 and sprayed out in a flat shape, then passes through the strip-shaped through-hole 131 on the plate 13, finally forming a continuous "airflow barrier" at the feed inlet of the upper shell 2. This barrier can effectively block the fiber dust or particulate dust generated during the material feeding process, preventing it from overflowing from the feed inlet of the upper shell 2, thus reducing dust pollution to the surrounding production environment and further reducing the health threat of dust to the respiratory system of workers.

[0040] Reference Figure 4 and Figure 6 The insertion rods 331 on the two movable frames 33 are staggered, that is, the axis of the insertion rods 331 on one set of movable frames 33 is staggered with the axis of the insertion rods 331 on the other set of movable frames 33.

[0041] When gripping packaged materials, the staggered insertion rods 331 can significantly increase the contact area with the materials inside the bag. When the insertion rods 331 are flipped with the corresponding first movable plate 31 and second movable plate 32 to drop the material, the staggered structure can form a "multi-point squeezing" effect on the materials inside the bag, which can more efficiently break up material clumps and loosen dense materials. This not only enhances the pre-dispersion effect of the material, but also reduces the material residue in the bag, ensuring that the material falls more thoroughly.

[0042] Reference Figure 7 The top of both sides of the slide rail 21 is provided with a slide groove 213, and both sides of the mounting bracket 3 are equipped with rollers 39 that are adapted to the slide groove 213. The rollers 39 can be embedded in the slide groove 213 and roll along the groove.

[0043] By cooperating with the roller 39 and the slide rail 213, the original sliding friction between the mounting bracket 3 and the slide rail 21 is transformed into rolling friction, which greatly reduces the frictional resistance when the mounting bracket 3 moves along the slide rail 21, ensuring that the movement of the mounting bracket 3 is smoother and more stable.

[0044] Among them, reference Figure 1 , Figure 2 and Figure 3 A guide pipe 122 connected to the discharge port 121 is provided on one side of the hopper 12. The guide pipe 122 is inclinedly arranged inside the side shell 11, and the bottom end of the guide pipe 122 penetrates the side shell 11 and extends to its outside, for guiding the bag body to be discharged.

[0045] When an empty material bag falls into the discharge port 121, it will slide down the inclined inner wall of the guide pipe 122 under its own gravity and be discharged from the inside of the side shell 11 to the external collection device without additional power. This design eliminates the need for manual insertion into the side shell 11 to clean the empty bags, making the centralized collection of empty material bags more convenient and labor-saving.

[0046] The implementation principle of a feeding device for asphalt production according to an embodiment of this application is as follows: The worker first places the packaged material in the designated area of ​​the plate 13 of the storage and transfer mechanism. Then, the first linear actuator 22 is activated, driving the slide rail 21 downward until the bottom surfaces of the first drive member 36 and the second drive member 37 are in contact with the top surface of the packaged material. Next, the second linear actuators 332 on the first movable plate 31 and the second movable plate 32 are activated synchronously, driving their corresponding movable frames 33 to move towards each other, so that the inserts 331 on the first movable plate 31 and the second movable plate 32 are inserted into the packaging bag, thereby achieving a stable grip on the packaged material.

[0047] After the gripping is completed, the first motor 212 starts, driving the lead screw 211 to rotate, which in turn drives the mounting frame 3 to move horizontally along the slide rail 21, and the packaged material moves synchronously towards the hopper 12. When the packaged material moves with the mounting frame 3 to directly above the cutter 5 on the plate 13, the cutter 5 cuts the bottom of the packaging bag and forms an opening; then, the second motor 341 starts, driving the rotating shaft 34 to rotate the first gear 342—the first gear 342 meshes with the teeth on the first drive member 36 and the second drive member 37 respectively, driving them to move synchronously in opposite directions; the teeth on the first drive member 36 and the second drive member 37 mesh with the second gear 38 on the first movable plate 31 and the second movable plate 32, thereby driving the first movable plate 31 and the second movable plate 32 to rotate upward around their respective hinge points.

[0048] At this time, the insert rod 331, already inserted into the packaging bag, will press the material downwards as the first movable plate 31 and the second movable plate 32 rotate, causing the clumped or agglomerated material to break up. Combined with gravity, the material will fall from the opening at the bottom of the packaging bag into the hopper 12. As the packaged material moves, the staggered levers 61 on the crossbar 6 extend into the bag, continuously agitating and scraping the material inside, reducing the amount of material remaining in the bag, and further breaking up and loosening the not-yet-fully-dispersed clumped or agglomerated material, reducing the volume of material agglomerates. During the feeding process, the nozzle 4 is connected to a high-pressure air source through the air inlet pipe 41. The airflow is ejected through the strip-shaped through-holes 131 on the plate 13, forming an "airflow barrier" to prevent dust generated during the feeding process from overflowing.

[0049] After the material falls into the hopper 12, the third motor 71 starts, driving the dispersing rod 7 to rotate, further breaking up any remaining clumps of material. Subsequently, the inclined screw conveyor 8 transports the loosened material to the weighing and metering system of the main body 1. The control and adjustment system will preset parameters such as weighing threshold and conveying pressure according to production needs. Once the material is accurately metered, the pneumatic conveying system of the main body 1 transports the material to the designated location in the mixing plant, thus completing the feeding operation.

[0050] Once the bag is completely emptied, the material gripping mechanism moves the empty bag above the discharge port 121. Then, the second linear actuator 332 activates, resetting the insertion rod 331 by moving the movable frame 33, thus pulling it out of the bag. At this point, the bag, no longer supported, falls into the discharge port 121 under its own weight, then enters the guide pipe 122, and finally slides out of the side housing 11 along the inclined guide pipe 122, falling into the external collection device. Finally, driven by the conveying mechanism, the material gripping mechanism resets, ready for the next feeding operation.

[0051] The above description is the preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principles described in this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A feeding device for asphalt production, comprising a body (1), one side of the body (1) is provided with a side shell (11), the inside of the side shell (11) is equipped with a hopper (12) and a screw conveyor (8), the hopper (12) is provided with a scattering assembly for scattering materials, characterized in that: an upper shell (2) is arranged above the side shell (11), the inner side of the upper shell (2) is provided with a sliding rail (21), the upper shell (2) is provided with a lifting assembly for driving the sliding rail (21) to move up and down in the vertical direction; a mounting bracket (3) is slidingly arranged on the sliding rail (21), and a displacement assembly is further arranged on the sliding rail (21) for driving the mounting bracket (3) to move along the axis direction of the sliding rail (21); the bottom of the mounting bracket (3) is respectively hingedly connected with a first movable plate (31) and a second movable plate (32), the first movable plate (31) and the second movable plate (32) are both provided with a movable frame (33) and a second linear driver (332), and the movable frame (33) is provided with a plug rod (331); the mounting bracket (3) is provided with a driving assembly for driving the first movable plate (31) and the second movable plate (32) to flip around the hinge point; one side of the top of the side shell (11) is fixedly connected with a flat plate (13), and the side of the flat plate (13) close to the hopper (12) is provided with a cutter (5) in the middle; the side of the side shell (11) away from the flat plate (13) is provided with a discharging port (121).

2. The feeding device for asphalt production according to claim 1, characterized in that: A plurality of horizontal rods (6) are arranged above the hopper (12) in a linear arrangement, the upper surface of the horizontal rod (6) is provided with a plurality of poking rods (61), the poking rods (61) on adjacent two horizontal rods (6) are staggered, and the poking rods (61) are made of rubber.

3. The feeding device for asphalt production according to claim 2, characterized in that: The upper shell (2) is provided with a nozzle (4) on the top of the side close to the flat plate (13), the flat plate (13) is provided with a strip-shaped through hole (131) matched with the spraying path of the nozzle (4), and the upper shell (2) is provided with an air inlet pipe (41) connected with the nozzle (4).

4. The feeding device for asphalt production according to claim 1, characterized in that: The lifting assembly comprises a first linear driver (22), a guide rod (23) and a sleeve (24), the guide rod (23) is slidingly arranged in the sleeve (24), the bottom end of the guide rod (23) is fixedly connected with the sliding rail (21), and the output end of the first linear driver (22) is fixedly connected with the top of the sliding rail (21) for driving the sliding rail (21) to ascend and descend along the axis of the guide rod (23).

5. The feeding device for asphalt production according to claim 1, characterized in that: The displacement assembly comprises a lead screw (211) and a first motor (212), the lead screw (211) is arranged below the sliding rail (21), the output end of the first motor (212) is fixedly connected with one end of the lead screw (211) through a shaft coupling, and the mounting bracket (3) is threadedly connected with the lead screw (211).

6. The feeding device for asphalt production according to claim 1, characterized in that: The plug rods (331) on the two movable frames (33) are staggered.

7. The feeding device for asphalt production according to claim 1, characterized in that: The driving assembly comprises two fixed rods (35) fixedly connected at the bottom of the mounting frame (3), and a first driving member (36) and a second driving member (37) movably sleeved on the two fixed rods (35) respectively; the bottom of the mounting frame (3) is provided with a rotating shaft (34) and a second motor (341), one end of the rotating shaft (34) is fixedly connected with a first gear (342), and the other end of the rotating shaft (34) is fixedly connected with an output shaft of the second motor (341); the first movable plate (31) and the second movable plate (32) are both fixedly connected with a second gear (38) at the end away from the movable frame (33), and the first driving member (36) and the second driving member (37) are both provided with teeth engaged with the first gear (342) and the second gear (38), when the first gear (342) rotates, the first driving member (36) and the second driving member (37) can be driven to move towards or reversely, thereby driving the corresponding second gear (38) to rotate, and the first movable plate (31) and the second movable plate (32) are turned over.

8. The feeding device for asphalt production according to claim 1, characterized in that: The two sides of the sliding rail (21) are both provided with a sliding groove (213) at the top, and the mounting frame (3) is both assembled with a roller (39) matched with the sliding groove (213).

9. The feeding device for asphalt production according to claim 1, characterized in that: One side of the hopper (12) is provided with a flow guide pipe (122) communicated with the discharging opening (121), the flow guide pipe (122) is obliquely arranged in the inside of the side shell (11), and the bottom end of the flow guide pipe (122) penetrates through the side shell (11) and extends to the outside thereof, for guiding the bag body to be discharged.

10. The feeding device for asphalt production according to claim 1, characterized in that: The bulk material assembly comprises a dispersing rod (7) and a third motor (71), the dispersing rod (7) is arranged at the inside bottom of the hopper (12), and the output shaft of the third motor (71) is drivingly connected with one end of the dispersing rod (7) through a shaft coupling, for driving the dispersing rod (7) to rotate to disperse the material.

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