Multi-color recycled stone preparation device and preparation method thereof

Abstract

The application discloses a multi-color recycled stone preparation device and a preparation method thereof, which comprises a rack, first, second and third storage bins are arranged side by side on the top of the rack, a rack inner cross beam is fixed in the rack, a rotatable color separation distribution disc is assembled at the lower part of the rack, three independent discharge channels are formed in the rotatable color separation distribution disc, a connecting shaft is fixedly connected to the center of the top end of the rotatable color separation distribution disc, and the upper end of the connecting shaft is in transmission connection with a driving motor set, the integrated structure of three-bin independent storage, rotatable color separation distribution, double-pressing plate splicing positioning and synchronous compaction demolding is adopted, the detachable partition mold is matched with the precise pressing column, multi-color raw material color separation distribution, uniform static pressure forming and rapid ejection demolding are realized, the production defects of traditional equipment are effectively solved, and the recycled stone product quality and production efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of building solid waste resource utilization and decorative stone processing technology, specifically to a multi-colored recycled stone preparation device and its preparation method. Background Technology

[0002] With the continuous improvement of the resource utilization rate of construction waste, recycled stone preparation equipment has become the core equipment for solid waste recycling. However, existing recycled stone production equipment generally suffers from many technical defects: First, traditional equipment mostly adopts a single-bin material storage and mixed material distribution structure, which can only produce single-color recycled stone and cannot achieve multi-color partitioning, gradient and other decorative effects, thus limiting the product's adaptability to various scenarios; Second, some multi-color equipment requires frequent disassembly, washing and color changing, resulting in high raw material waste, long color changing time and low production efficiency; Third, the material distribution mechanism has a simple structure and poor color separation accuracy, which easily leads to color mixing, blurred boundaries and uneven material distribution; Fourth, the molding and demolding mechanisms are designed separately, resulting in cumbersome processes, uneven molding density, and poor compatibility between the mold and the pressing head, making it impossible to achieve synchronous compaction and demolding; Fifth, the overall equipment structure is complex, disassembly and maintenance are inconvenient, and it has poor adaptability to small and medium-sized production scenarios. The aforementioned defects severely restrict the large-scale, efficient, and high-quality production of multi-colored recycled stone. Therefore, there is an urgent need for a recycled stone preparation device with a simplified structure, accurate color separation, uniform molding, and convenient demolding. Summary of the Invention

[0003] The purpose of this invention is to provide a multi-colored recycled stone preparation device and its preparation method, so as to solve the problems mentioned in the background art, such as the existing recycled stone equipment having a single color, low color separation accuracy, easy color mixing, uneven raw material compaction, low demolding efficiency, high material waste rate, and complex structure with poor adaptability.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a multi-colored recycled stone preparation device, comprising a frame, a first storage bin, a second storage bin, and a third storage bin arranged side by side on the top of the frame, an internal crossbeam fixed inside the frame, a rotatable color-separating material distribution disc assembled at the bottom of the frame, three independent discharge channels opened inside the rotatable color-separating material distribution disc, a connecting shaft fixed at the center of the top of the rotatable color-separating material distribution disc, the upper end of the connecting shaft being connected to a drive motor unit, the bottom outlets of the first storage bin, the second storage bin, and the third storage bin being respectively connected to a first screw conveyor, a second screw conveyor, and a third screw conveyor, the first screw conveyor, the second screw conveyor, and the third screw conveyor being inclined and their lower ends facing the independent discharge channels of the rotatable color-separating material distribution disc; The lower part of the frame is provided with a mold fixing seat. A detachable partition mold is detachably assembled in the middle of the mold fixing seat. The detachable partition mold is provided with multiple mold placement grooves. The mold placement grooves are adapted to the independent discharge channels. A demolding pneumatic push rod is provided below the mold fixing seat. The top of the demolding pneumatic push rod is fixedly connected to the demolding top plate. A demolding pressure plate one and a demolding pressure plate two are symmetrically arranged directly above the detachable partition mold. The bottom of both demolding pressure plate one and demolding pressure plate two are fixedly provided with the lower pressure column of the demolding pressure plate. The mold placement grooves are adapted to the lower pressure column of the demolding pressure plate. One side of the demolding plate is connected to the electric telescopic rod of demolding plate one, and the other side of the demolding plate is connected to the electric telescopic rod of demolding plate two. Demolding plate one and demolding plate two are respectively provided with demolding plate through groove one and demolding plate through groove two. Demolding plate through groove is provided at the bottom of the frame. Demolding plate through groove is correspondingly adapted to demolding plate.

[0005] Furthermore, the first, second, and third storage bins are cylindrical bodies of equal diameter. The three sets of storage bins are arranged equidistantly along the width direction of the top of the frame. The bottom outlets of the three sets of storage bins are sealed and connected to the upper inlet of the corresponding screw conveyor. The outer walls of the three sets of storage bins are detachably fixed to the top beam of the frame through brackets.

[0006] Furthermore, the first, second, and third storage bins are cylindrical bodies of equal diameter. The three sets of storage bins are arranged equidistantly along the width direction of the top of the frame. The bottom outlets of the three sets of storage bins are sealed and connected to the upper inlet of the corresponding screw conveyor. The outer walls of the three sets of storage bins are detachably fixed to the top beam of the frame through brackets.

[0007] Furthermore, the drive motor unit is fixedly installed at the center of the lower surface of the crossbeam inside the frame, and the connecting shaft passes vertically through the central shaft hole of the rotatable color-separating fabric disc and is fixed coaxially therewith. The upper end of the connecting shaft is coaxially driven with the output end of the drive motor unit.

[0008] Furthermore, the drive motor unit is fixedly installed at the center of the lower surface of the crossbeam inside the frame, and the connecting shaft passes vertically through the central shaft hole of the rotatable color-separating fabric disc and is fixed coaxially therewith. The upper end of the connecting shaft is coaxially driven with the output end of the drive motor unit.

[0009] Furthermore, the electric telescopic rods of demolding plate one and demolding plate two are fixed to the outer wall of the frame, and the demolding plate one and demolding plate two, when spliced ​​together, completely cover the upper port of the detachable partition mold.

[0010] Furthermore, the demolding pneumatic push rods are vertically and evenly distributed at the four corners of the bottom of the demolding top plate. The height of the first and second demolding pressure plate through slots is greater than the height of the first and second demolding pressure plates. The inner cavity size of the demolding top plate through slot is greater than the outer perimeter size of the demolding top plate.

[0011] This invention discloses a method for preparing multicolored recycled stone, applied to the aforementioned multicolored recycled stone preparation apparatus, comprising the following steps: Step 1: Mix recycled stone aggregates of different colors with binder according to the preset ratio, and fill them into the first storage bin, the second storage bin, and the third storage bin respectively. Start the drive motor unit and drive the rotatable color-separating material distribution disc to rotate at a constant speed through the connecting shaft. Step 2: Simultaneously start the first screw conveyor, the second screw conveyor, and the third screw conveyor to transport the three color matching raw materials to the independent discharge channels of the rotatable color-separating fabric tray. The raw materials fall precisely into the mold placement groove of the detachable partition mold through the independent discharge channels, completing the multi-color color separation and quantitative fabric distribution operation. Step 3: After the fabric is finished, stop the rotation of the rotatable color-separating fabric tray, start the electric telescopic rod of demolding plate one and demolding plate two, drive demolding plate one and demolding plate two to join together, and make the lower pressure column of the demolding plate precisely aligned with the top of the mold placement groove. Step 4: Activate the demolding pneumatic push rod to drive the demolding top plate to push the mold fixing seat and the detachable partition mold upwards simultaneously, so that the lower pressure column of the demolding pressure plate extends into the mold placement groove, and simultaneously statically compacts and demolds the raw material. Step 5: After static compaction is completed, the formed multicolored recycled stone is smoothly removed from the mold placement groove, completing the overall preparation process.

[0012] Furthermore, in the color-separation and quantitative material distribution operation, the rotatable color-separation material distribution disc rotates at a constant speed, so that the independent material discharge channels sequentially correspond to the mold placement grooves to complete the material distribution, ensuring that the raw materials of each color are evenly distributed and the color boundaries are clear. In the static pressure compaction and demolding push operation, the lower pressure column of the demolding pressure plate applies equal pressure to the raw materials in all the mold placement grooves simultaneously, and the pushing height of the demolding top plate can completely remove the formed stone from the mold placement groove, achieving unobstructed material removal.

[0013] Compared with the prior art, the beneficial effects of the present invention are: By using independent storage bins for the first, second, and third storage bins, and coordinating with three sets of screw conveyors for directional material feeding, the rotatable color-separating material distribution disc rotates and distributes materials through three independent discharge channels, accurately feeding different colored raw materials into the corresponding grooves of the detachable partitioned mold. The entire process is divided into partitions for isolated conveying and distribution, avoiding cross-mixing and blurred boundaries of multi-colored raw materials from the source. The resulting recycled stone has distinct color layers and strong decorative properties, solving the problems of single-color production and poor color separation accuracy of traditional equipment. The mold is fully covered by the splicing of demolding plate one and demolding plate two. The lower pressure column of the demolding plate is precisely matched with the mold groove. With the push of the demolding pneumatic push rod, the compaction and demolding are completed simultaneously. The through-slot structure provides avoidance for each moving part, so there is no jamming or interference during operation. The raw material is pressed evenly, and the molding density and strength meet the standards, which greatly reduces the breakage rate. The integrated operation of material feeding, pressing and demolding simplifies the process, shortens the cycle, and significantly improves production efficiency.

[0014] The material storage silos, screw conveyors, and detachable partition molds are all modular and detachable, resulting in a simple structure and quick assembly and disassembly. Color changes can be carried out without frequent disassembly and cleaning of the equipment, making equipment maintenance, material changes, and cleaning more convenient. It is suitable for multi-variety, small-batch production, reducing raw material waste, lowering energy consumption and labor costs, and is suitable for the efficient and high-value utilization of recycled aggregates from construction waste, resulting in outstanding environmental and economic benefits. Attached Figure Description

[0015] Figure 1 This is a partial structural illustration of the present invention; Figure 2 This is a front plan view of the present invention; Figure 3 This is a bottom view of the internal structure of the present invention; Figure 4 This is an overall view of the internal structure of the present invention; Figure 5 This is a front-view perspective view of the present invention; Figure 6 This is a side-view perspective view of the present invention.

[0016] In the diagram: 1. Frame; 2. First storage bin; 3. Second storage bin; 4. Third storage bin; 5. First screw conveyor; 6. Second screw conveyor; 7. Third screw conveyor; 8. Rotatable color-separating fabric tray; 9. Connecting shaft; 10. Drive motor unit; 11. Inner crossbeam of the frame; 12. Independent discharge channel; 13. Demountable partitioned mold; 14. Mold placement groove; 15. Mold fixing seat; 16. Demolding top plate through slot; 17. Demolding top plate; 18. Demolding pneumatic push rod; 19. Demolding pressure plate one; 20. Demolding pressure plate two; 21. Demolding pressure plate through slot one; 22. Demolding pressure plate through slot two; 23. Electric telescopic rod of demolding pressure plate one; 24. Electric telescopic rod of demolding pressure plate two; 25. Lower pressure column of demolding pressure plate. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figure 1-6 This invention provides a multi-colored recycled stone preparation device and method, including a frame 1, with a first storage bin 2, a second storage bin 3, and a third storage bin 4 arranged side by side on the top of the frame 1, an internal crossbeam 11 fixed inside the frame 1, and a rotatable color-separating material distribution plate 8 assembled at the bottom of the frame 1. The rotatable color-separating material distribution plate 8 has three independent discharge channels 12 inside, and a connecting shaft 9 is fixedly connected to the center of the top of the rotatable color-separating material distribution plate 8. The upper end of the connecting shaft 9 is connected to a drive motor 10. The bottom outlets of the first storage bin 2, the second storage bin 3, and the third storage bin 4 are respectively connected to a first screw conveyor 5, a second screw conveyor 6, and a third screw conveyor 7. The first screw conveyor 5, the second screw conveyor 6, and the third screw conveyor 7 are all inclined and their lower ends face the independent discharge channels 12 of the rotatable color-separating material distribution plate 8. A mold fixing seat 15 is provided at the lower part of the frame 1. A detachable partition mold 13 is detachably assembled in the middle of the mold fixing seat 15. The detachable partition mold 13 is provided with multiple mold placement grooves 14. The mold placement grooves 14 correspond to and are adapted to the independent discharge channel 12. A demolding pneumatic push rod 18 is provided below the mold fixing seat 15. The top of the demolding pneumatic push rod 18 is fixedly connected to the demolding top plate 17. A demolding pressure plate 19 and a demolding pressure plate 20 are symmetrically arranged above the detachable partition mold 13. The bottom of the demolding pressure plate 19 and the demolding pressure plate 20 are both fixedly provided with the lower pressure column 25 of the demolding pressure plate. The mold placement grooves 14 correspond to and are adapted to the lower pressure column 25 of the demolding pressure plate. The side of demolding plate 19 is connected to the electric telescopic rod 23 of demolding plate 1, and the side of demolding plate 20 is connected to the electric telescopic rod 24 of demolding plate 2. Demolding plate 19 and demolding plate 20 are respectively provided with demolding plate through slot 1 21 and demolding plate through slot 2 22. Demolding plate through slot 16 is provided at the bottom of the frame, and demolding plate through slot 16 is correspondingly adapted to demolding plate 17. Specifically: The frame 1 serves as the support and installation foundation for the entire device, providing a fixed carrier and operating space for all components. The first storage bin 2, second storage bin 3, and third storage bin 4, arranged side-by-side on the top of the frame 1, independently store recycled stone mixed raw materials of different colors, achieving multi-color raw material storage. The internal crossbeam 11 of the frame 1 provides installation support for the rotatable color-separating material distribution disc 8 and the drive motor unit 10. The rotatable color-separating material distribution disc 8 achieves the diversion and directional distribution of multi-color raw materials through three independent discharge channels 12. The drive motor unit 10 outputs power, which is transmitted to the rotatable color-separating material distribution disc 8 via the connecting shaft 9, causing it to rotate at a uniform speed, completing the material distribution action. The bottom outlets of the three storage bins are respectively sealed and connected to the first screw conveyor 5, the second screw conveyor 6, and the third screw conveyor 7. The inclined screw conveyors directionally transport the raw materials in the storage bins to the independent discharge channels 12 of the rotatable color-separating material distribution disc 8, completing the raw material transportation. The mold at the bottom of the frame 1... The fixed base 15 supports the detachable partitioned mold 13, which receives multi-colored raw materials from the independent discharge channel 12 through the mold placement groove 14, realizing partitioned material holding; the demolding pneumatic push rod 18 below the mold fixed base 15 provides power for demolding, and the demolding top plate 17 at its top is used to push the mold fixed base 15 and the detachable partitioned mold 13 to move vertically; the demolding pressure plate 19 and demolding pressure plate 20 directly above the detachable partitioned mold 13 serve as compaction carriers, and their bottom ends The lower pressure column 25 of the demolding plate is precisely matched with the mold placement groove 14, and is used to extend into the groove to compact the raw material. The electric telescopic rod 23 of demolding plate one and the electric telescopic rod 24 of demolding plate two provide opening and closing power for the two sets of demolding plates, realizing the splicing and separation of the plates. The demolding plate through groove 21 and the demolding plate through groove 22 provide clearance space for the movement of the demolding plates. The demolding top plate through groove 16 at the bottom of the frame is matched with the demolding top plate 17, providing clearance channel for the vertical pushing movement of the demolding top plate. It realizes the integrated operation of multi-color recycled stone storage, directional conveying, rotating color distribution, precise positioning and compaction, and synchronous pushing demolding. It eliminates the problem of color mixing and cross-contamination of multi-color raw materials from the structure, ensuring clear color boundaries of recycled stone. At the same time, it integrates the three processes of material distribution, compaction and demolding, simplifies the equipment structure, improves molding efficiency and finished product density, and realizes the high-value and standardized preparation of recycled aggregate from construction waste.

[0019] The first storage bin 2, the second storage bin 3, and the third storage bin 4 are cylindrical bodies of equal diameter. The three sets of storage bins are arranged equidistantly along the width direction of the top of the frame 1. The discharge port at the bottom of the three sets of storage bins is sealed and connected to the feed port at the top of the corresponding screw conveyor. The outer walls of the three sets of storage bins are detachably fixed to the top beam of the frame 1 through brackets. Specifically: The first storage bin 2, the second storage bin 3, and the third storage bin 4 adopt a cylindrical structure with equal diameter to ensure smooth flow of raw materials within the bins without any dead corners for accumulation; the three sets of storage bins are arranged equidistantly along the width direction of the top of the frame 1, so that the conveying distance and conveying angle of the three sets of storage bins are completely consistent with those of the corresponding screw conveyors; the bottom discharge ports of the three sets of storage bins are sealed and connected to the upper inlets of the first screw conveyor 5, the second screw conveyor 6, and the third screw conveyor 7 to prevent leakage and dust at the conveying interface; the outer walls of the three sets of storage bins are detachably fixed to the top crossbeam of the frame 1 through brackets, which allows for quick disassembly, maintenance, material replacement, and cleaning of the storage bins.

[0020] The first screw conveyor 5, the second screw conveyor 6, and the third screw conveyor 7 are arranged at the same angle toward the rotatable color-separating fabric tray 8. The lower discharge port of the first screw conveyor 5, the second screw conveyor 6, and the third screw conveyor 7 is suspended above the rotatable color-separating fabric tray 8. The shell of the first screw conveyor 5, the second screw conveyor 6, and the third screw conveyor 7 are detachably assembled with the crossbeam 11 inside the frame. Specifically: the first screw conveyor 5, the second screw conveyor 6, and the third screw conveyor 7 are arranged at the same angle toward the rotatable color-separating material distribution disc 8 to ensure that the drop point and drop speed of the three sets of raw materials are uniform; the lower discharge port of the three sets of screw conveyors is suspended above the rotatable color-separating material distribution disc 8, so as not to make mechanical contact with the rotating material distribution disc and avoid motion interference; the shell of the three sets of screw conveyors and the crossbeam 11 inside the frame can be detached and assembled, which can be quickly disassembled and maintained while ensuring the stable installation of the conveying mechanism.

[0021] The drive motor unit 10 is fixedly installed at the center of the lower surface of the crossbeam 11 inside the frame. The connecting shaft 9 vertically passes through the central shaft hole of the rotatable color-separating fabric disc 8 and is fixed coaxially with it. The upper end of the connecting shaft 9 is coaxially driven with the output end of the drive motor unit 10. Specifically: the drive motor unit 10 is fixedly installed at the center of the lower surface of the crossbeam 11 inside the frame to ensure that the power output is centered and the force is balanced; the connecting shaft 9 passes vertically through the central shaft hole of the rotatable color-separating fabric tray 8 and is fixed coaxially with it, so that the power transmission is without eccentricity or shaking; the upper end of the connecting shaft 9 is coaxially driven with the output end of the drive motor unit 10, so that the rotational power of the motor is completely and synchronously transmitted to the rotatable color-separating fabric tray 8.

[0022] The detachable partition mold 13 is snapped into the middle of the mold fixing base 15, and the inner cavity size of the mold placement groove 14 matches the outer periphery size of the lower pressure column 25 of the demolding pressure plate. Specifically: The detachable partition mold 13 is embedded in the middle of the mold fixing base 15 by snap-fit, realizing the radial positioning and circumferential fixation of the mold and avoiding shaking and displacement during operation; the inner cavity size of the mold placement groove 14 is precisely matched with the outer peripheral size of the lower pressure column 25 of the demolding plate, so that the lower pressure column can smoothly extend into the groove and fit with the inner wall of the groove without gap.

[0023] The electric telescopic rod 23 of demolding plate one and the electric telescopic rod 24 of demolding plate two are fixed to the outer wall of the frame 1. After the demolding plate one 19 and demolding plate two 20 are spliced ​​together, they completely cover the upper port of the detachable partition mold 13. Specifically: the electric telescopic rod 23 of demolding plate one and the electric telescopic rod 24 of demolding plate two are fixedly installed on the outer wall of the frame 1 to provide stable telescopic power for the demolding plate; demolding plate one 19 and demolding plate two 20 can be spliced ​​together under the drive of the electric telescopic rod, and after splicing, they completely cover the upper port of the detachable partition mold 13, so that the lower pressure column 25 of all demolding plates at the bottom corresponds to the mold placement groove 14.

[0024] The demolding pneumatic push rods 18 are vertically and evenly distributed at the four corners of the bottom of the demolding top plate 17. The height of the demolding pressure plate through slot 1 21 and demolding pressure plate through slot 22 is greater than the height of demolding pressure plate 1 19 and demolding pressure plate 2 20. The inner cavity size of the demolding top plate through slot 16 is greater than the outer perimeter size of the demolding top plate 17. Specifically: the demolding pneumatic push rods 18 are vertically and evenly distributed at the four corners of the bottom of the demolding top plate 17, so that the force is evenly distributed when pushing and the mold is prevented from tilting and jamming; the height of the demolding pressure plate through slot 1 21 and demolding pressure plate through slot 22 is greater than the height of demolding pressure plate 19 and demolding pressure plate 20, so as to provide sufficient clearance for the opening and closing movement of the pressure plate; the inner cavity size of the demolding top plate through slot 16 at the bottom of the frame is greater than the outer perimeter size of the demolding top plate 17, so as to ensure that the demolding top plate is unobstructed and frictionless when pushing vertically.

[0025] A method for preparing multicolored recycled stone, applied to a multicolored recycled stone preparation device, includes the following steps: Step 1: Mix recycled stone aggregates of different colors with binder according to a preset ratio, and fill them into the first storage bin 2, the second storage bin 3, and the third storage bin 4 respectively. Start the drive motor unit 10, and drive the rotatable color-separating material distribution disc 8 to rotate at a uniform speed through the connecting shaft 9. Step 2: Simultaneously start the first screw conveyor 5, the second screw conveyor 6, and the third screw conveyor 7 to transport the three color matching raw materials to the independent discharge channel 12 of the rotatable color-separating fabric tray 8. The raw materials fall precisely into the mold placement groove 14 of the detachable partition mold 13 through the independent discharge channel 12, completing the multi-color color-separating quantitative fabric distribution operation. Step 3: After the fabric is finished, stop the rotation of the rotatable color-separating fabric tray 8, start the electric telescopic rod 23 of demolding plate one and the electric telescopic rod 24 of demolding plate two, drive demolding plate one 19 and demolding plate two 20 to join together, and make the lower pressing column 25 of the demolding plate precisely aligned with the top of the mold placement groove 14. Step 4: Activate the demolding pneumatic push rod 18, which drives the demolding top plate 17 to push the mold fixing seat 15 and the detachable partition mold 13 upward synchronously, so that the lower pressure column 25 of the demolding pressure plate extends into the mold placement groove 14, and realizes synchronous static pressure compaction and demolding push on the raw material. Step 5: After static compaction is completed, the formed multicolored recycled stone is steadily removed from the mold placement groove 14 to complete the overall preparation process.

[0026] In the color-separation and quantitative material distribution operation, the rotatable color-separation material distribution plate 8 rotates at a constant speed, so that the independent material discharge channel 12 sequentially corresponds to the mold placement groove 14 to complete the material distribution, ensuring that the raw materials of each color are evenly distributed and the color boundaries are clear. In the static pressure compaction and demolding push operation, the lower pressure column 25 of the demolding pressure plate applies equal pressure to all the raw materials in the mold placement groove 14 simultaneously. The pushing height of the demolding top plate 17 can completely remove the formed stone from the mold placement groove 14, achieving unobstructed material removal. Specifically, the automated process employs a combination of compartmentalized material storage, rotating color-separated material distribution, pressure plate splicing and positioning, top-push compaction and demolding, and finished product removal. First, recycled stone aggregates of different colors are mixed with binder and then loaded into the first storage bin 2, the second storage bin 3, and the third storage bin 4, respectively. The drive motor unit 10 drives the rotatable color-separated material distribution disc 8 to rotate at a uniform speed. Three sets of screw conveyors simultaneously transport the raw materials to an independent discharge channel 12, precisely placing them into the mold placement groove 14 of the detachable partitioned mold 13 to complete the color-separated material distribution. After distribution, two sets of electric telescopic rods drive the demolding pressure plates to assemble and close, with the lower pressure column aligned with the mold groove. The demolding pneumatic push rod 18 drives the demolding top plate 17 to push the mold upwards, and the lower pressure column extends into the groove to complete the static compaction of the raw materials, simultaneously achieving top-push demolding. Finally, the formed stone is smoothly removed, completing the entire process. This method, through the core logic of rotating color separation, synchronous compaction, and integrated demolding, achieves continuous production of multi-colored recycled stone.

[0027] In this invention, a fully automated system is constructed using the frame 1 as the overall support carrier. This system integrates compartmentalized material storage, directional conveying, rotary color separation, synchronous compaction, and integrated demolding, achieving efficient conversion of recycled construction waste aggregate into multi-colored decorative stone. During operation, three sets of equal-diameter cylindrical storage bins at the top are arranged equidistantly along the width of the frame, independently storing recycled stone raw materials of different colors. The raw materials are stably conveyed to the rotatable color-separating material distribution disc 8 at the bottom of the frame via three sets of sealed and interconnected inclined screw conveyors. The drive motor 10 drives the distribution disc to rotate at a uniform speed through the connecting shaft 9. Relying on the three independent discharge channels 12 inside, the multi-colored raw materials are separated and precisely distributed, allowing the raw materials to fall evenly into the mold placement groove 14 of the detachable partitioned mold 13. After the fabric is laid, the electric telescopic rods on both sides drive the demolding pressure plate 19 and demolding pressure plate 20 to quickly assemble. The lower pressure column 25 at the bottom of the pressure plate is precisely aligned with the mold groove. The demolding pneumatic push rods 18 at the four corners of the bottom of the mold simultaneously drive the demolding top plate 17 to push vertically, so that the mold moves upward and the lower pressure column extends into the groove, completing the static compaction of the raw material and realizing the push demolding at the same time. The through grooves on the frame and the pressure plate provide clearance space for each moving part, ensuring that there is no interference during operation.

[0028] The supporting preparation method is strictly matched with the device structure, and the process is executed in five steps: compartmentalized mixing and filling → rotating color-separated material distribution → pressure plate splicing and positioning → top pushing compaction and demolding → finished product removal. The entire process is fully automated and requires no manual intervention. This technology completely solves the pain points of traditional recycled stone equipment in terms of structure and process, such as single color, easy color mixing, uneven material distribution, inconsistent forming density, and low demolding efficiency. It achieves independent feeding and precise material distribution of multiple colors of raw materials, resulting in clear color boundaries and excellent decorative effect of finished products. The material distribution, compaction, and demolding processes are completed in one integrated manner, which greatly simplifies the production process, improves the preparation efficiency, and reduces labor and raw material losses. The mold and pressure column are precisely matched, resulting in uniform density, strength, and regular size of the formed stone, and significantly improves the qualified rate of finished products. The equipment adopts a detachable modular design, which is convenient for maintenance, material replacement and cleaning, and is suitable for small and medium-sized production, truly realizing the environmentally friendly, high-value and standardized utilization of recycled aggregates from construction waste.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-colored recycled stone preparation apparatus, comprising a frame (1), characterized in that: The frame (1) is provided with a first storage bin (2), a second storage bin (3) and a third storage bin (4) arranged side by side on the top. The frame (1) is fixed with an internal crossbeam (11). The frame (1) is equipped with a rotatable color-separating fabric tray (8) at the bottom. The rotatable color-separating fabric tray (8) has three independent discharge channels (12) inside. The center of the top of the rotatable color-separating fabric tray (8) is fixed with a connecting shaft (9). The upper end of the connecting shaft (9) is connected to the drive motor group (10). The bottom outlets of the first storage bin (2), the second storage bin (3) and the third storage bin (4) are respectively connected to the first screw conveyor (5), the second screw conveyor (6) and the third screw conveyor (7). The first screw conveyor (5), the second screw conveyor (6) and the third screw conveyor (7) are all arranged at an angle and their lower ends face the independent discharge channels (12) of the rotatable color-separating fabric tray (8). The frame (1) is provided with a mold fixing seat (15) at the bottom. A detachable partition mold (13) is detachably assembled in the middle of the mold fixing seat (15). The detachable partition mold (13) is provided with multiple mold placement grooves (14). The mold placement grooves (14) are adapted to the independent discharge channel (12). A demolding pneumatic push rod (18) is provided below the mold fixing seat (15). The top of the demolding pneumatic push rod (18) is fixedly connected to the demolding top plate (17). A demolding pressure plate one (19) and a demolding pressure plate two (20) are symmetrically arranged above the detachable partition mold (13). The bottom of the demolding pressure plate one (19) and the demolding pressure plate two (20) are both fixedly provided with the lower pressure column (25) of the demolding pressure plate. The mold placement groove (14) is adapted to the lower pressure column (25) of the demolding pressure plate. The side of the demolding plate one (19) is connected to the electric telescopic rod (23) of the demolding plate one, and the side of the demolding plate two (20) is connected to the electric telescopic rod (24) of the demolding plate two; the demolding plate one (19) and the demolding plate two (20) are respectively provided with demolding plate through groove one (21) and demolding plate through groove two (22), and the bottom of the frame is provided with demolding top plate through groove (16), and the demolding top plate through groove (16) is correspondingly adapted to the demolding top plate (17).

2. The apparatus for preparing multi-colored recycled stone according to claim 1, characterized in that: The first storage bin (2), the second storage bin (3), and the third storage bin (4) are cylindrical bodies of equal diameter. The three sets of storage bins are arranged equidistantly along the width direction of the top of the frame (1). The bottom outlet of the three sets of storage bins is sealed and connected to the upper inlet of the corresponding screw conveyor. The outer walls of the three sets of storage bins are detachably fixed to the top beam of the frame (1) through brackets.

3. The apparatus for preparing multi-colored recycled stone according to claim 1, characterized in that: The first screw conveyor (5), the second screw conveyor (6), and the third screw conveyor (7) are arranged at the same angle toward the rotatable color-separating fabric tray (8). The lower discharge ports of the first screw conveyor (5), the second screw conveyor (6), and the third screw conveyor (7) are suspended on the upper side of the rotatable color-separating fabric tray (8). The housings of the first screw conveyor (5), the second screw conveyor (6), and the third screw conveyor (7) are detachably assembled with the crossbeam (11) inside the frame.

4. The apparatus for preparing multi-colored recycled stone according to claim 1, characterized in that: The drive motor assembly (10) is fixedly installed at the center of the lower surface of the crossbeam (11) inside the frame. The connecting shaft (9) passes vertically through the central shaft hole of the rotatable color-separated fabric disc (8) and is fixed coaxially with it. The upper end of the connecting shaft (9) is coaxially driven with the output end of the drive motor assembly (10).

5. The apparatus for preparing multi-colored recycled stone according to claim 1, characterized in that: The detachable partition mold (13) is snapped into the middle of the mold fixing seat (15), and the inner cavity size of the mold placement groove (14) matches the outer periphery size of the lower pressure column (25) of the demolding pressure plate.

6. The apparatus for preparing multi-colored recycled stone according to claim 1, characterized in that: The electric telescopic rod (23) of the demolding plate one and the electric telescopic rod (24) of the demolding plate two are fixed to the outer wall of the frame (1). After the demolding plate one (19) and the demolding plate two (20) are spliced ​​together, they completely cover the upper port of the detachable partition mold (13).

7. The apparatus for preparing multi-colored recycled stone according to claim 1, characterized in that: The demolding pneumatic push rod (18) is vertically and evenly distributed at the four corners of the bottom of the demolding top plate (17). The height of the demolding pressure plate through groove one (21) and demolding pressure plate through groove two (22) is greater than the height of demolding pressure plate one (19) and demolding pressure plate two (20). The inner cavity size of the demolding top plate through groove (16) is greater than the outer perimeter size of the demolding top plate (17).

8. A method for preparing multicolored recycled stone, applied to the multicolored recycled stone preparation apparatus according to any one of claims 1-7, characterized in that, Includes the following steps: Step 1: Mix recycled stone aggregates of different colors with binder according to the preset ratio, and fill them into the first storage bin (2), the second storage bin (3), and the third storage bin (4) respectively. Start the drive motor group (10) and drive the rotatable color-separating material plate (8) to rotate at a constant speed through the connecting shaft (9). Step 2: Simultaneously start the first screw conveyor (5), the second screw conveyor (6), and the third screw conveyor (7) to transport the three color matching materials to the independent discharge channel (12) of the rotatable color-separating fabric tray (8). The materials fall precisely into the mold placement groove (14) of the detachable partition mold (13) through the independent discharge channel (12) to complete the multi-color color-separating quantitative fabric distribution operation. Step 3: After the fabric is finished, stop the rotation of the rotatable color-separating fabric tray (8), start the electric telescopic rod (23) of demolding plate one and the electric telescopic rod (24) of demolding plate two, drive demolding plate one (19) and demolding plate two (20) to join together, and make the lower pressure column (25) of the demolding plate precisely aligned with the top of the mold placement groove (14); Step 4: Start the demolding pneumatic push rod (18), which drives the demolding top plate (17) to push the mold fixing seat (15) and the detachable partition mold (13) upward synchronously, so that the lower pressure column (25) of the demolding pressure plate extends into the mold placement groove (14) to achieve synchronous static pressure compaction and demolding push of the raw material; Step 5: After static compaction is completed, the formed multicolored recycled stone is steadily removed from the mold placement groove (14) to complete the overall preparation process.

9. The method for preparing multi-colored recycled stone according to claim 8, characterized in that: In the color-separation and quantitative material distribution operation, the rotatable color-separation material distribution plate (8) rotates at a constant speed, so that the independent material discharge channel (12) sequentially corresponds to the mold placement groove (14) to complete the material distribution, ensuring that the raw materials of each color are evenly distributed and the color boundaries are clear. In the static pressure compaction and demolding push operation, the lower pressure column (25) of the demolding pressure plate applies equal pressure to the raw materials in all the mold placement grooves (14) simultaneously. The pushing height of the demolding top plate (17) can make the formed stone completely ejected from the mold placement groove (14) to achieve unobstructed material removal.

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