A high-efficiency feeding three-roller machine

Abstract

The application discloses a kind of high-efficiency feeding three-roller machine, it is related to grinding equipment technical field, including rack, grinding device, driving device and discharging assembly are installed on rack;It also includes pouring device, pouring device includes fixed plate, turnover mechanism, load platform and angle detection assembly;Fixed plate is fixed to rack side;Load platform is hinged with the end of fixed plate, and through barrel groove is opened in load platform;Turnover mechanism includes hydraulic rod, and the bottom of hydraulic rod is hinged with fixed plate by hinged seat, and the bottom of load platform is hinged with the extension end of hydraulic rod;Angle detection assembly includes gear set, gear box and transmission shaft;Transmission shaft is connected with hinged seat and extends into gear box and is connected with gear set;Detection unit is provided on gear set.The application monitors the rotation angle of hydraulic rod in real time by angle detection assembly, realizes the closed-loop control of turnover angle.

Description

Technical Field

[0001] This application relates to the field of grinding equipment technology, and in particular to a high-efficiency feeding three-roll mill. Background Technology

[0002] In the slurry preparation processes of industries such as chemicals, coatings, inks, pharmaceuticals, and food, the three-roll mill is a core piece of equipment for refining and dispersing high-viscosity materials. Existing three-roll mills, especially medium to large-sized models, often require large-capacity feed tanks due to their long and wide rollers and large material throughput. However, in actual production operations, the feeding process reveals significant shortcomings.

[0003] First, for larger three-roll mills, the feeding position is usually high, and the single pouring volume can reach tens of liters or even higher, resulting in a large overall weight of the material hopper. Manually holding the hopper to pour the material is not only labor-intensive and extremely strenuous, but also difficult to control the hopper's posture steadily during pouring, easily causing material spillage, wasting raw materials and polluting the equipment environment. Second, during the pouring process, the injection speed and volume of material between the grinding rollers rely entirely on the operator's experience and judgment. The operator must constantly adjust the pouring angle and timing based on subjective feelings such as the rolling state of the material on the grinding roller surface, color changes, and sound feedback. This experience-dependent control method requires the operator to constantly monitor the material condition between the rollers throughout the entire grinding process and maintain a body posture that supports the hopper and adjusts the tilt angle. This highly human-machine-bound work mode not only consumes a great deal of physical strength but also requires continuous high concentration, making it impossible for workers to escape from repetitive actions.

[0004] Furthermore, the large three-roll mill has a relatively high frame, with the grinding rollers typically positioned in the upper middle section of the frame. When the operator is standing on the ground, their line of sight is insufficient, making it difficult to observe the fineness of the ground material, its surface wetting state, and its dispersion between the rollers. Even climbing onto simple steps makes it difficult to obtain a stable and safe observation angle. The inconvenience of unloading material and the difficulty in observing the grinding process combine to prevent the feeding process from achieving the required high-precision control of material flow and lacking an efficient operating rhythm. Inconsistent material injection can easily lead to material accumulation or shortage at the front of the grinding rollers, affecting the dispersion effect, and may also cause fluctuations in equipment load, shortening the lifespan of the transmission system. Therefore, improving the convenience, accuracy, and safety of the feeding operation of large three-roll mills has become an urgent problem to be solved. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the feeding operation of existing three-roll mills is inconvenient, relies on manual experience, has difficulty in accurately controlling the tilting angle, and is not safe enough.

[0006] The technical solution adopted in this invention is to provide a high-efficiency feeding three-roll mill, which realizes automatic, stable and controllable tilting of the material bucket by setting a tilting device with a flipping mechanism and an angle detection component, and combines a spreading mechanism and a lifting mechanism to ensure reliable clamping, thereby improving the convenience and accuracy of feeding operation.

[0007] The specific technical solution of this invention is as follows: It includes a frame on which a grinding device, a driving device, and a feeding assembly are mounted; a tilting device, which includes a fixed plate, a flipping mechanism, a loading platform, and an angle detection assembly; the fixed plate is fixed to the side of the frame; the loading platform is hinged to the end of the fixed plate, and a through groove is formed on the loading platform; the flipping mechanism includes a hydraulic rod, the bottom of which is hinged to the fixed plate via a hinge seat, and the telescopic end of which is hinged to the bottom of the loading platform; the angle detection assembly includes a gear set, a gearbox, and a transmission shaft; the transmission shaft is connected to the hinge seat and extends into the gearbox to connect to the gear set; a detection unit is provided on the gear set.

[0008] The aforementioned high-efficiency feeding three-roll mill includes a tilting mechanism comprising a first hydraulic rod and a second hydraulic rod; the bottoms of the first hydraulic rod and the second hydraulic rod are respectively hinged to the fixed plate via a hinge seat, and their telescopic ends are both hinged to the bottom of the loading platform.

[0009] The aforementioned high-efficiency feeding three-roll mill has two drive shafts. One end of each drive shaft is connected to the shaft of the corresponding hinge seat via a universal joint, and the other end extends into the gearbox. The angle detection assembly also includes a universal joint, which is mounted on the drive shaft.

[0010] The aforementioned high-efficiency feeding three-roll mill includes a gear set comprising a first follower wheel, a second follower wheel, an intermediate wheel, and a fixed frame. The fixed frame includes a fixed part and a circumferential part. The fixed part is fixedly connected to the inner wall of the gearbox, and the circumferential part is annular and coaxially fixedly sleeved on the outer circumferential surface of the intermediate wheel. The first follower wheel is connected to one of the transmission shafts, and the second follower wheel is connected to the other transmission shaft. Both the first and second follower wheels have sleeve holes on their end faces facing the intermediate wheel. The first and second follower wheels are respectively sleeved on the intermediate wheel through the sleeve holes, and the three are arranged coaxially.

[0011] The aforementioned high-efficiency feeding three-roll mill, wherein the detection unit includes resistive elements and brushes, and a set of resistive elements arranged in a circular array is fixed on the annular end face of the first follower wheel and the second follower wheel facing the middle wheel, wherein the resistance value of each resistive element in each set is different; and a brush is fixed on each of the two end faces of the circumferential portion facing the first follower wheel and the second follower wheel, wherein the contacts of the two brushes are elastically pressed onto the set of resistive elements on the corresponding side.

[0012] The aforementioned high-efficiency feeding three-roll mill, wherein the grinding device includes three grinding rollers, the three grinding rollers are arranged parallel to each other, and the axes of the three are located in the same horizontal plane.

[0013] The aforementioned high-efficiency feeding three-roll mill also integrates a spreading mechanism on the platform of the loading table. The spreading mechanism includes multiple spreading cylinders and spreading blocks. The cylinder bodies of the multiple spreading cylinders are fixed to the loading table, and the output ends of their piston rods all face the direction of the barrel groove. Each spreading cylinder has a spreading block fixedly installed at its output end. The spreading block is L-shaped or hook-shaped.

[0014] The aforementioned high-efficiency feeding three-roll mill has a lifting mechanism installed inside the lower part of the trough. The lifting mechanism includes a lifting plate and a lifting drive assembly. The lifting plate is placed at the opening on the bottom surface of the trough. The lifting drive assembly includes multiple lifting cylinders. The cylinder body of the lifting cylinder is fixed to the material carrier platform, and the end of its piston rod is connected to the bottom surface of the lifting plate.

[0015] The aforementioned high-efficiency feeding three-roll mill also has a guide plate fixedly installed on the material loading platform. The guide plate is a U-shaped groove, with one end located near the barrel groove and the other end pointing towards the area above the grinding device.

[0016] The aforementioned high-efficiency feeding three-roll mill also includes a climbing assembly, which is fixed on the frame and includes a ladder, guardrails, and treads; the ladder is located on one side of the frame; the treads are laid horizontally on the top of the frame; and the guardrails are arranged along the two sides of the ladder and around the perimeter of the treads.

[0017] The hydraulic rod of the tilting mechanism drives the loading platform to rotate around the hinge point, replacing manual handling and tipping, reducing the physical exertion of operators and minimizing material spillage.

[0018] The beneficial effects of this invention are: 1. The angle detection component transmits the rotation angle of the hydraulic rod hinge seat to the gear set via the transmission shaft. The resistive element and brush in the detection unit convert the angle into a resistance signal, which is used for closed-loop control of the synchronization of the extension and retraction of the hydraulic rods on both sides. By recording the resistance value corresponding to different angles, the tilting angle can be reproduced, and the quantitative adjustment of the material injection amount can be realized.

[0019] 2. The spreading block of the spreading mechanism expands radially from the inside of the barrel opening, and the lifting plate of the lifting mechanism supports the barrel from the bottom of the barrel. Together, they constrain the barrel's axial and radial degrees of freedom, preventing the barrel from shifting or falling off during the tilting of the loading platform.

[0020] 3. A U-shaped guide plate is set between the barrel opening and the grinding device to collect the poured material and guide it to the feeding area between the grinding rollers, reducing material splashing.

[0021] 4. The machine frame is equipped with ladders, steps and guardrails, so that operators can stand on the top of the machine frame to directly observe the material status between the grinding rollers and the amount of material remaining in the hopper, without relying on visual inspection or experience on the ground.

[0022] 5. By ensuring a stable material injection rate, material accumulation or shortage at the front end of the grinding roller caused by feeding fluctuations can be reduced, thereby decreasing the load fluctuation of the drive unit and extending the service life of the transmission system.

[0023] 6. The processes of clamping, tilting, resetting, and changing the material bucket are executed continuously, making it suitable for the batch production conditions of medium and large three-roll mills. Attached Figure Description

[0024] Figure 1 It is an isometric drawing of the equipment; Figure 2 It is an isometric view of the equipment from another perspective; Figure 3 This is a partial view of the device; Figure 4 This is a partial view of the device; Figure 5 This is a three-dimensional view of the tilting device; Figure 6 This is a stereoscopic view of the angle detection component; Figure 7 This is a partial view of the angle detection component; Figure 8 This is a partial view of the angle detection component.

[0025] Explanation of reference numerals in the attached drawings: 1. Grinding roller; 12. Drive motor; 13. Drive pinion; 14. Drive gear; 15. Small pulley; 16. Large pulley; 21. First hydraulic rod; 22. Second hydraulic rod; 23. Hinge seat; 24. Carrying platform; 25. Tank; 26. Guide plate; 3. Gear set; 31. First follower wheel; 32. Resistor element; 33. Brush; 34. Second follower wheel; 35. Middle... 351. Interval wheel; 36. Sleeve hole; 36. Fixing frame; 361. Fixing part; 362. Encircling part; 37. Gearbox; 38. Universal joint; 39. Transmission shaft; 41. Lifting plate; 42. Lifting cylinder; 43. Spreading cylinder; 44. Spreading block; 45. Fixing plate; 51. Ladder; 52. Guardrail; 53. Step; 100. Frame; 101. Receiving plate; 102. Scraper; 103. Adjusting shaft. Detailed Implementation

[0026] In the description of this invention, it should be understood that the terms center, longitudinal, transverse, length, width, thickness, front, back, left, right, upper, lower, axial, radial, vertical, horizontal, inner, and outer, indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Furthermore, the terms first and second are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as first or second may explicitly or implicitly include one or more of that feature. In the description of this invention, "multiple" means two or more, unless otherwise explicitly specified.

[0027] This invention proposes a high-efficiency feeding three-roll mill, with reference to... Figure 1 and Figure 2 The aim is to overcome the defects in the aforementioned background technologies through structural optimization, and to achieve labor-saving, controllable, precise, and easy-to-observe feeding operations. The three-roll mill includes a frame 100, which serves as the basic support component and integrates a grinding device, a drive device, a tilting device, a climbing assembly, and a feeding assembly.

[0028] The grinding device is used to apply strong shearing and extrusion forces to high-viscosity materials, thereby breaking down and uniformly dispersing solid powder agglomerates. The grinding device includes multiple grinding rollers 1; in this embodiment, three grinding rollers 1 are specifically used. All three grinding rollers 1 are cylindrical rollers, arranged parallel to each other, and their axes are located in the same horizontal plane to ensure a uniform extrusion gap between the rollers. The three grinding rollers 1 are divided into a rear roller, a middle roller, and a front roller according to the material's direction of travel.

[0029] Reference Figure 3The drive unit provides rotational power to the grinding roller 1. The drive unit includes a drive motor 12, a small pulley 15, a large pulley 16, a belt, a drive pinion 13, and multiple drive gears 14. The drive motor 12 is fixedly mounted at a suitable position on the frame 100 by fasteners, and the small pulley 15 is fixedly mounted on its output shaft via a key connection. The large pulley 16 is rotatably mounted on the frame 100 via a bearing housing, and power is transmitted between the large pulley 16 and the small pulley 15 via a belt, forming a first-stage reduction. The large pulley 16 is coaxially fixedly connected to the drive pinion 13, realizing the direction of power transmission. At both ends of each grinding roller 1, a drive gear 14 is coaxially mounted with the grinding roller 1 and fixedly mounted via a key or flange. The drive gears 14 of two adjacent grinding rollers 1 mesh with each other, thereby transmitting power between the rollers. In this embodiment, both the drive gears 14 and the drive pinions 13 are preferably configured as helical gears to improve transmission smoothness and reduce noise. The driving pinion 13 meshes with the driving gear 14 at the end of one of the grinding rollers 1. The entire power transmission route is as follows: the drive motor 12 drives the small pulley 15 to rotate, which in turn drives the large pulley 16 and the coaxial driving pinion 13 via a belt. The driving pinion 13 then drives one of the driving gears 14, and through meshing, drives the remaining driving gears 14, ultimately causing the three grinding rollers 1 to rotate. By changing the number of teeth (module) of the driving gears 14 connected to each grinding roller 1 or by adding an intermediate idler gear, different surface linear velocities can be assigned to the different grinding rollers 1, forming a series of rollers with progressively increasing speeds: slow roller, medium roller, and fast roller. A micron-level dynamic narrow slit is formed between the three grinding rollers 1 with progressively increasing speeds and adjacent rollers rotating in opposite directions. When the material passes through, it is subjected to high-pressure extrusion and huge interlayer shear force, thereby breaking up agglomerates and achieving the fine and uniform dispersion of high-viscosity materials.

[0030] Reference Figure 1 and Figure 2 The feeding assembly is installed at the discharge position of the frame 100 to scrape and guide the material ground on the surface of the fast roller for collection. The feeding assembly includes a feeding receiving plate 101 and a scraper 102. The scraper 102 is a thin strip plate, fixedly installed on the side edge of the receiving plate 101, and located on the side of the receiving plate 101 closest to the grinding roller 1, with its free edge facing the surface of the fast roller. The receiving plate 101 is hinged to the frame 100 via an adjusting shaft, the position of which corresponds to the discharge side of the fast roller. By rotating the adjusting shaft, the tilt angle of the receiving plate 101 relative to the horizontal plane can be adjusted, thereby causing the front edge of the scraper 102 to adhere to the adjacent fast roller surface with appropriate pressure, continuously scraping off the layer of material adhering to the roller surface. The scraped material flows along the scraper 102 into the receiving plate 101, and is discharged downward along the inclined surface of the receiving plate 101 under the action of gravity, completing the feeding process.

[0031] The climbing assembly is fixedly mounted on the frame 100, providing operators with a safe platform for climbing and working. The climbing assembly includes a ladder 51, guardrails 52, and steps 53. The ladder 51 is located on one side of the frame 100, its placement intentionally avoiding moving or high-temperature components such as the drive motor 12, pulley housing, and feeding assembly to ensure safe passage. The steps 53 are horizontally laid on the top of the frame 100, forming a stable support surface for operators to stand on, allowing them to clearly observe the material flow and grinding status between the grinding rollers 1 from a top-down view. Guardrails 52 are installed along both sides of the ladder 51 and around the perimeter of the steps 53, forming a continuous protective structure to prevent falls.

[0032] Reference Figure 4 and Figure 5 The tilting device is located on the side of the frame 100, preferably on the same side as the climbing assembly. This allows operators to directly observe the operation of the tilting device and the remaining material in the bucket while climbing the ladder 51 or stopping on the step 53, facilitating full-process control of the feeding process. The tilting device includes a fixed plate 45, a tilting mechanism, a loading platform 24, and an angle detection assembly. The fixed plate 45 is an L-shaped rigid plate, its vertical surface is fixed to the side of the frame 100 with bolts, and its horizontal surface protrudes outward as the mounting base for the tilting mechanism. The loading platform 24 has a through-hole bucket groove 25, the inner contour of which is adapted to the shape of a standard bucket, used to accommodate and limit the bucket. During operation, the top cover of the bucket is first removed, and then the open bucket is vertically placed into the bucket groove 25.

[0033] The tilting mechanism drives the loading platform 24 to rotate around a fixed hinge point, thereby causing the material bucket to tilt towards the grinding roller 1. The tilting mechanism includes a first hydraulic rod 21 and a second hydraulic rod 22, both of which are double-acting hydraulic cylinders. The bottoms of the first hydraulic rod 21 and the second hydraulic rod 22 are respectively hinged to the horizontal surface of the fixed plate 45 through a hinge seat 23. The bottom ends of the two hinge seats 23 are mounted on the fixed plate 45 by pins, so that the hinge seats 23 themselves can rotate relative to the fixed plate 45 around the mounting pins; the telescopic end (piston rod end) of the other end is hinged to the corresponding position of the bottom of the loading platform 24 through a pin. The end of the loading platform 24 (usually the end closer to the frame 100) is hinged to the end of the fixed plate 45 through a main hinge shaft, and its central area is supported by the first hydraulic rod 21 and the second hydraulic rod 22, which are spaced apart along the width direction of the loading platform 24. Thus, the loading platform 24, the first hydraulic rod 21, the second hydraulic rod 22, and the fixed plate 45 together constitute a movable multi-point support mechanism. When the piston rods of the first hydraulic rod 21 and the second hydraulic rod 22 extend or retract synchronously, they push the loading platform 24 to rotate around the end hinge point with the fixed plate 45, realizing the smooth flipping of the loading platform 24 from a horizontal state to an inclined state. The material bucket also tilts synchronously, and the material inside the bucket flows out along the bucket opening under the action of gravity, and after being guided, it is injected into the feeding area between the grinding rollers 1.

[0034] Reference Figure 6-8 To ensure stable and precise control during the tilting process, the extension and retraction of the first hydraulic rod 21 and the second hydraulic rod 22 must always remain synchronized and consistent. Therefore, an angle detection component is specially designed to monitor the changes in the rotation angle of the two hydraulic rods in real time. The angle detection component includes a gear set 3, a gearbox 37, a universal joint 38, and a transmission shaft 39. The gearbox 37 is a sealed housing, fixedly mounted on the upper surface of the fixed plate 45. Two transmission shafts 39 are provided. One end of each transmission shaft 39 is connected to the shaft of the hinge seat 23 at the bottom of the corresponding hydraulic rod through the universal joint 38, so that the rotation angle generated by the movement of the hinge seat 23 with the hydraulic rod can be converted into a constant angle rotation of the transmission shaft 39. The other end extends into the gearbox 37 and is connected to the gear set 3. The universal joint 38 is provided on the transmission shaft 39 to compensate for possible shaft deviations during installation and movement, ensuring the flexibility of rotation transmission.

[0035] The gear set 3 is encapsulated inside the gearbox 37 and includes a first follower gear 31, a second follower gear 34, and an intermediate gear 35. The intermediate gear 35 is fixedly mounted inside the gearbox 37 by a fixing bracket 36, keeping it relatively stationary and preventing rotation. The fixing bracket 36 includes a fixing part 361 and a circumferential part 362. The fixing part 361 is flat and fixed to the inner wall of the gearbox 37, while the circumferential part 362 is annular and coaxially fixedly sleeved on the outer circumferential surface of the intermediate gear 35. The first follower gear 31 is connected to one of the drive shafts 39 by a key or similar means, and the second follower gear 34 is fixedly connected to the other drive shaft 39. On the end faces of the first follower wheel 31 and the second follower wheel 34 facing the intermediate wheel 35, there are sleeve holes 351. The diameter and depth of the sleeve holes 351 form a clearance fit with the external dimensions of the intermediate wheel 35, so that the first follower wheel 31 and the second follower wheel 34 are respectively sleeved on the intermediate wheel 35 from both sides through the sleeve holes 351, and the three are arranged coaxially, but the intermediate wheel 35 itself does not rotate, while the two follower wheels can rotate independently.

[0036] A detection unit is provided on the gear set 3, which includes a resistive element 32 and a brush 33. Specifically, multiple resistive elements 32 are opened and fixed on the annular end faces of the first follower wheel 31 and the second follower wheel 34 facing the intermediate wheel 35. These resistive elements 32 are evenly arranged in a circumferential array, distributed along the entire circular outline of the follower wheel. Each resistive element 32 has a specific and different resistance value, forming a circular resistance sequence. On the two end faces of the circumferential portion 362 of the fixing frame 36 facing the first follower wheel 31 and the second follower wheel 34, a brush 33 is fixedly provided on each side. The contacts of the brush 33 are elastically pressed against the track of the resistive element 32 of the corresponding follower wheel. When the first follower wheel 31 and the second follower wheel 34 rotate with the action of the corresponding hydraulic rod, the brush 33 slides past each resistive element 32 in sequence, and the total resistance value connected to the circuit changes stepwise accordingly. Since the resistance value of each resistor element 32 is unique and known, the absolute angle and angular displacement of the corresponding hydraulic rod hinge seat 23 from its initial position can be calculated by reading the number of resistance changes and the current resistance value through the monitoring circuit. In this embodiment, the system only needs to determine in real time whether the rotation angles of the first follower wheel 31 and the second follower wheel 34 remain the same to determine whether the extension and retraction lengths of the first hydraulic rod 21 and the second hydraulic rod 22 are consistent. Once a difference in the rotation angles of the two follower wheels is detected, the control system can immediately adjust the flow rate of the corresponding hydraulic valve to achieve closed-loop synchronous correction. The synchronous and precise extension and retraction of the two hydraulic rods ensures the smooth and torsion-free tilting action of the loading platform 24, thereby ensuring the accuracy of the liquid flow landing point when the material is poured from the bucket. In addition, the different resistive elements 32 have independent resistance values, which can also give the system a "memory point" function: that is, after the ideal tilting angle is set for the first time, the system can record the resistance value sequence position corresponding to the angle; when used again, the first hydraulic rod 21 and the second hydraulic rod 22 can be automatically controlled to extend or retract synchronously until the resistance value fed back by the angle detection component reaches the preset memory position, so that the loading platform 24 can accurately reproduce the previous tilting angle, or the tilting angle value can be preset according to the process requirements, and the system can automatically adjust the flipping posture without repeated manual attempts.

[0037] An expansion mechanism is also integrated on the platform of the loading platform 24 to reliably clamp and fix the material bucket. The expansion mechanism includes multiple expansion cylinders 43, the cylinder bodies of which are fixed to the bottom or side wall of the loading platform 24, and the output ends of their piston rods all face the bucket groove 25. An expansion block 44 is fixedly installed at the output end of each expansion cylinder 43. The expansion block 44 is specifically designed to be L-shaped or hook-shaped, so that after it extends, it can both apply force to the inner wall of the bucket opening and form a hook-like anti-reverse engagement.

[0038] A lifting mechanism is installed inside the lower part of the trough 25. The lifting mechanism includes a lifting plate 41 and a lifting drive assembly. The lifting plate 41 is a flat plate that matches the shape of the bottom of the bucket and is placed at the opening of the bottom surface of the trough 25. It is driven by the lifting drive assembly to move up and down. When the bucket is placed into the trough 25, the bottom of the bucket rests directly on the lifting plate 41, meaning that the vertical load of the bucket is entirely borne by the lifting plate 41. The lifting drive assembly includes multiple lifting cylinders 42. The cylinder bodies of these lifting cylinders 42 are fixed to the structural components of the loading platform 24, and the ends of their piston rods are connected to the bottom surface of the lifting plate 41.

[0039] After removing the lid from the bucket, place it vertically into the bucket slot 25 of the loading platform 24 with the opening facing upwards. At this time, the bottom of the bucket rests on the lifting plate 41. Before initiating the tilting and overturning, first control the action of the spreading cylinder 43, extending the piston rod and driving each spreading block 44 to move horizontally to directly above the bucket opening. In this embodiment, four spreading cylinders 43 are provided, evenly distributed along the circumference of the bucket opening. Subsequently, the lifting drive assembly is activated, and the lifting cylinder 42 simultaneously lifts the lifting plate 41, lifting the entire bucket upwards. As the bucket rises, the edge of its opening gradually contacts the spreading blocks 44 above; when the bucket opening contacts the lower edge of the spreading blocks 44, the control system controls the spreading cylinder 43 to slowly retract, causing the four spreading blocks 44 to slightly open the bucket opening outwards from the inside of the bucket opening in four orthogonal directions. The spreading force generated during this process creates a tight abutment between the spreading blocks 44 and the inner wall of the barrel opening. The spreading blocks 44 in four directions apply a balanced radial constraint force to the barrel. The purpose is not to expand the barrel opening to a specific size, but to fix the top of the barrel in a predetermined spatial position through the tightening force. At this point, the bottom of the barrel is lifted and limited from below by the lifting plate 41, and the top of the barrel opening is tightened and secured from the inside by the four spreading blocks 44, completely restricting the barrel's freedom of movement along its own axis and preventing it from moving up and down. At the same time, the four spreading blocks 44 are evenly spread on the inside of the barrel opening, restricting the barrel's translation in any radial direction, preventing the barrel from radially displacing or tilting relative to the loading platform 24. Therefore, during the subsequent tilting and overturning process, even if the loading platform 24 is tilted to a large angle, the barrel remains firmly constrained in the preset posture within the barrel trough 25, without slippage, rotation, or falling off, ensuring that the material flows out stably in the set direction.

[0040] To further improve the accuracy of material pouring, a guide plate 26 is fixedly installed on the loading platform 24. The guide plate 26 has a U-shaped cross-section and is formed by bending sheet metal. The guide plate 26 is fixedly positioned directly below the material flow trajectory, with one end starting near the possible material flow edge at the barrel opening and the other end inclined towards the feeding area above the grinding roller 1. During the pouring process, the viscous material flowing out of the barrel first falls into the U-shaped groove of the guide plate 26, and is collected and guided along the inclined direction of the guide plate 26 to the designated feeding gap between the grinding rollers 1, preventing material from splashing and scattering, and playing a role in precise positioning and feeding.

[0041] The implementation principle of this embodiment is as follows: First, the operator transports the bucket containing the premixed slurry to the side of the frame 100 on the side of the tilting device and removes the sealed lid of the bucket. After checking that the opening mechanism and the lifting mechanism are in the initial retracted state, the open bucket is vertically placed into the bucket slot 25 of the loading platform 24 with the help of a hoist or manually, confirming that the bottom of the bucket is stably placed on the lifting plate 41 and the body of the bucket is naturally accommodated within the outline of the bucket slot 25.

[0042] Subsequently, the clamping procedure is initiated. The control system issues a command, first causing the piston rods of the four spreading cylinders 43 to extend synchronously, driving each spreading block 44 to move horizontally to a position directly above the opening of the bucket. Then, multiple lifting cylinders 42 in the lifting drive assembly are activated synchronously, and the lifting plate 41 smoothly lifts the bucket upwards, gradually bringing the bucket opening closer to the positioned spreading blocks 44. When the upper edge of the bucket opening contacts the lower surface of the spreading blocks 44, the lifting cylinders 42 stop and maintain the current lifting force, while the spreading cylinders 43 begin to retract, causing the four L-shaped or hook-shaped spreading blocks 44 to spread evenly outwards from the inside of the bucket opening. The spreading blocks 44 form a rigid interference fit with the inner wall of the bucket opening, radially tightening the bucket opening; at this point, the bottom of the bucket is held in place by the lifting plate 41, and the top of the bucket is clamped from four directions by the four spreading blocks 44. Thus, the axial and radial degrees of freedom of the bucket are restricted, completing the secure clamping.

[0043] Next, the operator sets the desired tilting angle via the control panel. The system can use previously stored memory parameters or directly input the target angle value. After the automatic tilting program is started, the first hydraulic rod 21 and the second hydraulic rod 22 extend synchronously under the drive of the hydraulic system. The hinge seats 23 at the bottom of the two hydraulic rods rotate accordingly, and this rotation is transmitted to the first follower wheel 31 and the second follower wheel 34 in the gearbox 37 via the universal joint 38 and the transmission shaft 39. The two follower wheels rotate respectively, and the brushes 33 set on both sides of the fixed frame 36 encircling part 362 sweep the resistive elements 32 on the end face of their respective follower wheels in sequence. The control system collects the resistance step signal generated by the resistance sequence on both sides in real time and calculates the real-time rotation angle of the first follower wheel 31 and the second follower wheel 34. If the two angles are consistent, it indicates that the extension and retraction of the first hydraulic rod 21 and the second hydraulic rod 22 are synchronized, the loading platform 24 rotates smoothly around the end hinge point, and the material bucket and the loading platform 24 tilt gradually. During the pouring process, the material flows out of the bucket opening, is gathered and guided by the U-shaped groove of the guide plate 26, and is accurately injected into the feeding area between the rear roller and the middle roller. If the angle detection component detects a deviation in the rotation angle of the two follower rollers, the control system immediately fine-tunes the flow rate of the corresponding hydraulic rod to ensure dynamic synchronization.

[0044] Throughout the pouring and grinding process, operators can safely ascend the step 53 at the top of the frame 100 via the side ladder 51, holding onto the guardrail 52, to directly observe the material coating, dispersion fineness, and color changes between the three grinding rollers 1 from a high vantage point. The remaining material in the pouring device's feed hopper can also be observed simultaneously. If the pouring posture needs adjustment, the tilt angle can be fine-tuned or pouring can be paused at any time via the control panel.

[0045] As the grinding device operates, the drive motor 12 drives the drive pinion 13 to rotate via the small pulley 15, belt, and large pulley 16. This drives the three grinding rollers 1 to rotate in opposite directions at differential speeds via the meshing drive gear 14. The material is subjected to high pressure and enormous interlayer shear force within the micron-level narrow gaps between the slow and medium rollers, and between the medium and fast rollers, resulting in fine dispersion and homogenization. The ground material exits along the surface of the fast roller, and the scraper 102 in the feeding assembly continuously scrapes off the material layer against the surface of the fast roller. The material flows along the scraper 102 into the receiving plate 101, and is then discharged into a collection container via the inclined receiving plate 101.

[0046] Once the material in the hopper has been emptied, or the required feeding amount has been reached, the control system can simultaneously retract the first hydraulic rod 21 and the second hydraulic rod 22, causing the loading platform 24 to return to a horizontal or near-horizontal position. Subsequently, the cylinder 43 can be extended and the lifting plate 41 lowered in reverse to release the clamp on the hopper, allowing the empty hopper to be removed and replaced with a new one, repeating the above operations. The entire process achieves efficient, precise, labor-saving, and easily observable feeding operations in real time.

[0047] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A high-efficiency feeding three-roll mill, characterized in that, Includes a frame (100), on which a grinding device, a drive device and a feeding assembly are mounted; A tilting device, comprising a fixed plate (45), a tilting mechanism, a loading platform (24), and an angle detection assembly; The fixing plate (45) is fixed to the side of the frame (100); The loading platform (24) is hinged to the end of the fixing plate (45), and a through barrel groove (25) is provided on the loading platform (24); The flipping mechanism includes a hydraulic rod, the bottom of which is hinged to the fixed plate (45) via a hinge seat (23), and the telescopic end of the hydraulic rod is hinged to the bottom of the loading platform (24). The angle detection component includes a gear set (3), a gearbox (37), and a transmission shaft (39); The transmission shaft (39) is connected to the hinge seat (23) and extends into the gearbox (37) to connect with the gear set (3); The gear set (3) is equipped with a detection unit.

2. The high-efficiency feeding three-roll mill according to claim 1, characterized in that, The overturning mechanism includes a first hydraulic rod (21) and a second hydraulic rod (22); The bottoms of the first hydraulic rod (21) and the second hydraulic rod (22) are respectively hinged to the fixed plate (45) through a hinge seat (23), and their telescopic ends are both hinged to the bottom of the loading platform (24).

3. The high-efficiency feeding three-roll mill according to claim 2, characterized in that, The transmission shaft (39) is provided in two. One end of each transmission shaft (39) is connected to the shaft of the corresponding hinge seat (23) through the universal joint (38), and the other end extends into the gearbox (37). The angle detection assembly also includes a universal joint (38), which is disposed on the transmission shaft (39).

4. The high-efficiency feeding three-roll mill according to claim 3, characterized in that, The gear set (3) includes a first follower wheel (31), a second follower wheel (34), an intermediate wheel (35), and a fixed frame (36); The fixing frame (36) includes a fixing part (361) and a circumferential part (362). The fixing part (361) is fixedly connected to the inner wall of the gearbox (37). The circumferential part (362) is annular and is coaxially fixedly sleeved on the outer circular surface of the intermediate wheel (35). The first follower wheel (31) is connected to one of the transmission shafts (39), and the second follower wheel (34) is connected to the other transmission shaft (39); Both the first follower wheel (31) and the second follower wheel (34) have a sleeve hole (351) on their end faces facing the intermediate wheel (35). The first follower wheel (31) and the second follower wheel (34) are respectively sleeved on the intermediate wheel (35) through the sleeve hole (351), and the three are arranged coaxially.

5. The high-efficiency feeding three-roll mill according to claim 4, characterized in that, The detection unit includes a resistor element (32) and a brush (33). On the annular end face of the first follower wheel (31) and the second follower wheel (34) facing the middle wheel (35), a set of resistor elements (32) arranged in a circular array are fixed. The resistance values ​​of each resistor element (32) in each set of resistor elements (32) are different. On the two end faces of the circumferential portion (362) facing the first follower wheel (31) and the second follower wheel (34), a brush (33) is fixed on each side, and the contacts of the two brushes (33) are elastically pressed onto a set of resistor elements (32) on the corresponding side.

6. The high-efficiency feeding three-roll mill according to claim 1, characterized in that, The grinding device includes three grinding rollers (1), which are arranged in parallel to each other and whose axes are located in the same horizontal plane.

7. The high-efficiency feeding three-roll mill according to claim 1, characterized in that, The loading platform (24) also integrates a support mechanism, which includes multiple support cylinders (43) and support blocks (44); The cylinder bodies of the plurality of the spreading cylinders (43) are fixed to the material platform (24), and the piston rod output ends of the cylinders are all facing the barrel trough (25); Each of the expansion cylinders (43) has an expansion block (44) fixedly installed at its output end. The expansion block (44) is L-shaped or hook-shaped.

8. The high-efficiency feeding three-roll mill according to claim 7, characterized in that, A lifting mechanism is provided inside the lower part of the trough (25), the lifting mechanism including a lifting plate (41) and a lifting drive assembly; The lifting plate (41) is placed at the bottom opening of the trough (25); The lifting drive assembly includes multiple lifting cylinders (42), the cylinder body of the lifting cylinder (42) is fixed to the loading platform (24), and the end of its piston rod is connected to the bottom surface of the lifting plate (41).

9. The high-efficiency feeding three-roll mill according to claim 1, characterized in that, A guide plate (26) is also fixedly installed on the material carrier (24). The guide plate (26) is a U-shaped groove with one end located near the barrel groove (25) and the other end pointing to the area above the grinding device.

10. The high-efficiency feeding three-roll mill according to claim 1, characterized in that, It also includes a climbing assembly fixed to the frame (100), which includes a ladder (51), a guardrail (52) and a footboard (53); The ladder (51) is located on one side of the frame (100); The pedal (53) is laid horizontally on top of the frame (100); The guardrail (52) is provided along both sides of the ladder (51) and around the footboard (53).

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