A solid waste-based cementitious material grinding device

Abstract

The utility model belongs to solid waste base cementitious material processing technical field, specifically disclose a kind of solid waste base cementitious material powder grinding device, including bottom plate, the bottom plate upper end one side is connected with first support plate, first support plate one side upper portion is connected with feed pipe, feed pipe one end is extended to first support plate one side, first support plate is opened with rolling mouth at the place corresponding feed pipe, feed pipe is located inside rotation of rolling mouth, the outer wall one side of feed pipe is connected with stabilizing plate, stabilizing plate one side is connected with outer tube, the utility model is structured design by double layer powder grinding, strong magnetic iron removal, convenient cleaning etc., realize that powder grinding efficiency and quality promotion, iron impurity efficient removal, maintenance convenient and cost reduction, and structure stable adaptability is strong.

Description

Technical Field

[0001] This utility model belongs to the field of solid waste-based cementitious material processing technology, and specifically relates to a solid waste-based cementitious material grinding device. Background Technology

[0002] With the increasing urgency of my country's demand for the resource utilization of industrial solid waste, solid waste-based cementitious materials, as a new type of low-carbon and environmentally friendly building material, have attracted widespread attention for their preparation technology. Solid waste-based cementitious materials are typically made from industrial solid wastes such as steel slag, blast furnace slag, fly ash, and desulfurized gypsum as main raw materials, processed through crushing, grinding, and homogenization. They offer significant advantages in replacing traditional cement and reducing carbon emissions. Among these processes, grinding is crucial in determining the fineness, activity, and performance stability of the product, directly affecting the hydration reaction efficiency and mechanical properties of the cementitious material. Due to the complex composition of industrial solid waste, often containing hard particles, metallic impurities, and a certain amount of moisture, traditional grinding equipment must simultaneously meet multiple requirements, including crushing, impurity removal, and drying. Grinding efficiency and finished product purity have become core issues restricting their large-scale application.

[0003] In existing ball mills, cleaning residual iron filings and powder impurities inside the material during the grinding process is extremely inconvenient. These iron filings and powder impurities are mostly carried by the solid waste raw materials themselves or generated during equipment wear during grinding. They are mixed in the material and continuously disperse as grinding progresses. Because the working environment of the ball mill is a closed cylinder, and the material is in a continuous state of movement and grinding during the grinding process, traditional cleaning methods are difficult to penetrate deep into the material to effectively remove iron filings and powder impurities. If cleaning is required, it is often necessary to stop the machine and manually disassemble it, which not only consumes a lot of time and manpower, but also interrupts the production process, affecting grinding efficiency and production progress. More importantly, these iron filings and powder impurities that are not cleaned in time will be discharged with the powder, which requires subsequent screening of the discharged powder to collect iron filings. This not only increases the additional process and equipment investment, but also extends the production cycle. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a grinding device for solid waste-based cementitious materials.

[0005] To achieve the above objectives, this utility model provides a grinding device for solid waste-based cementitious materials, including a base plate. A first support plate is connected to one side of the upper end of the base plate. A feed pipe is connected to the upper part of one side of the first support plate. One end of the feed pipe extends through to one side of the first support plate. A rolling port is opened on the first support plate corresponding to the feed pipe. The feed pipe rotates inside the rolling port. A stabilizing plate is connected to one side of the outer wall of the feed pipe. An outer cylinder is connected to one side of the stabilizing plate. An inner cylinder is connected to one side of the stabilizing plate. The inner cylinder is located inside the outer cylinder. Magnetic blocks are embedded circumferentially on the inner wall of the inner cylinder. Protective plates are connected to multiple magnetic blocks on the inner wall of the inner cylinder. A cleaning mechanism is connected to one side of the stabilizing plate. A discharge pipe is connected to one side of the lower end of the outer cylinder. A second support plate is connected to the upper end of the base plate away from the first support plate. A rotating port is opened in the middle of one side of the second support plate. A rotating block is rotatably connected to the inner wall of the rotating port. A connecting plate is connected to one side of the rotating block. An air intake mechanism is connected to the middle of one side of the rotating block. The outer cylinder is driven by a driving assembly.

[0006] In the above technical solution, the cleaning mechanism further includes a movable ring located inside the inner cylinder. One side of the movable ring contacts one side of the stabilizing plate. The outer wall of the movable ring is connected to a cleaning block at each of the outer walls of multiple protective plates. The cleaning block is U-shaped and the multiple cleaning blocks are respectively located at each of the outer walls of multiple protective plates and in contact with one side.

[0007] In the above technical solution, a cleaning brush is connected between two adjacent cleaning blocks. Multiple cleaning brushes contact the inner wall of the inner cylinder. The cleaning brushes can brush the inner wall of the inner cylinder to avoid the presence of material powder in the inner hole of the inner cylinder. Pull rods are evenly connected to the upper part of one side of the moving ring. One end of multiple pull rods extends through to one side of the connecting plate. One end of the pull rod is connected to a mounting plate. The mounting plate is connected to the connecting plate by bolts.

[0008] In the above technical solution, a plug ring is further provided on one side of the moving ring, and a slot is provided on one side of the stabilizing plate corresponding to the plug ring. The plug ring is inserted into the slot, and the cross-sectional shape of the slot is adapted to the cross-sectional shape of the plug ring. The plug ring is made of silicone material.

[0009] In the above technical solution, a cleaning ring is further provided on one side of the connecting plate, the inner wall of the cleaning ring slides in contact with one side of the outer wall of the outer cylinder, a cleaning port is provided at the middle of the lower end of the cleaning ring, and a cleaning pipe is connected to the lower end of the cleaning ring corresponding to the cleaning port.

[0010] In the above technical solution, the air intake mechanism further includes an air intake pipe, the middle of one side of the air intake pipe passing through the rotating block and the connecting plate and extending into the interior of the connecting plate, and a gas delivery pipe circumferentially connected to one side of the outer wall of the air intake pipe, and a connecting pipe connected to one side of each of the multiple gas delivery pipes.

[0011] In the above technical solution, one end of each of the multiple connecting pipes extends through to one side of the connecting plate, and a filter screen is embedded in both the multiple connecting pipes and one side of the inner wall of the air intake pipe.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] By adopting a double-layer grinding space with the inner and outer cylinders coaxially arranged, combined with adjustable grinding media, a step-by-step processing of materials is achieved, from coarse grinding to fine grinding. The inner cylinder first breaks large pieces of material into smaller pieces, and the outer cylinder then performs fine grinding. With the addition of hot air drying, the agglomeration of materials is reduced, which not only significantly improves grinding efficiency but also ensures uniform particle size of the finished product, meeting the requirements of fineness and activity for solid waste-based cementitious materials.

[0014] The strong magnetic blocks embedded circumferentially on the inner wall of the inner cylinder can adsorb ferromagnetic impurities in the material in real time during the grinding process. The protective plate neither affects the magnetic field penetration nor damages the magnetic blocks, thus preventing wear and tear on the grinding media and equipment caused by iron filings and reducing the risk of secondary iron contamination. At the same time, the process design of discharging material first and then cleaning ensures that iron filings do not contaminate the already ground material during cleaning, further improving the purity of the finished product.

[0015] The cleaning mechanism, through the coordinated use of a moving ring, cleaning blocks, and cleaning brushes, efficiently removes iron filings from the surface of the protective plate and residual material powder from the inner wall of the inner cylinder. The U-shaped cleaning blocks fit snugly against the protective plate, and the cleaning brushes adapt to the curvature of the inner cylinder, ensuring thorough cleaning. The bolted connection between the tie rod and the connecting plate, along with the sliding design of the second support plate, makes the cleaning operation more convenient, reduces equipment downtime for maintenance, and lowers labor costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the device proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the installation structure of the connecting pipe proposed in this utility model;

[0018] Figure 3 This is a schematic diagram of the structure for opening the cleaning port proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the installation structure of the protective frame proposed in this utility model;

[0020] Figure 5 The present utility model proposes Figure 3 A magnified structural diagram of A;

[0021] Figure 6 This is a schematic diagram of the connection structure between the cleaning block and the connecting ring proposed in this utility model;

[0022] Figure 7 This is a schematic diagram of the installation structure of the protective plate proposed in this utility model.

[0023] In the diagram: 1. Base plate; 2. First support plate; 3. Feed pipe; 4. Stabilizing plate; 5. Outer cylinder; 6. Inner cylinder; 7. Magnetic block; 8. Protective plate; 9. Moving ring; 10. Cleaning block; 11. Insert ring; 12. Slot; 13. Pull rod; 14. Discharge pipe; 15. Second support plate; 16. Rotating block; 17. Connecting plate; 18. Cleaning ring; 19. Cleaning port; 20. Cleaning pipe; 21. Air inlet pipe; 22. Air delivery pipe; 23. Connecting pipe. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figures 1-7 The image shows a grinding device for solid waste-based cementitious materials.

[0026] The system includes a base plate 1, a first support plate 2 connected to one side of the upper end of the base plate 1, a feed pipe 3 connected to the upper part of one side of the first support plate 2, one end of the feed pipe 3 extending through to one side of the first support plate 2, a rolling port opened on the first support plate 2 corresponding to the feed pipe 3, the feed pipe 3 rotating inside the rolling port, a stabilizing plate 4 connected to one side of the outer wall of the feed pipe 3, an outer cylinder 5 connected to one side of the stabilizing plate 4, an inner cylinder 6 connected to one side of the stabilizing plate 4, the inner cylinder 6 being inside the outer cylinder 5, magnetic blocks 7 embedded circumferentially on the inner wall of the inner cylinder 6, protective plates 8 connected to multiple magnetic blocks 7 on the inner wall of the inner cylinder 6, a cleaning mechanism connected to one side of the stabilizing plate 4, a discharge pipe 14 connected to one side of the lower end of the outer cylinder 5, a second support plate 15 connected to the upper end of the base plate 1 away from the first support plate 2, a rotating port opened in the middle of one side of the second support plate 15, a rotating block 16 rotatably connected to the inner wall of the rotating port, a connecting plate 17 connected to one side of the rotating block 16, an air intake mechanism connected to the middle of one side of the rotating block 16, and the outer cylinder 5 being driven by a drive assembly.

[0027] The drive assembly is a drive motor mounted on one side of the upper end of the base plate 1. The output end of the drive motor is connected to a synchronous pulley. A synchronous belt ring matching the synchronous pulley is installed on the outer wall of the outer cylinder 5. The synchronous pulley and the synchronous belt ring are driven by a synchronous belt, which enables the outer cylinder 5 and the inner cylinder 6 to rotate. Both the inner cylinder 6 and the outer cylinder 5 are filled with grinding media, which can impact and grind the materials. The outer cylinder 6 has a larger space and the grinding media gradation is adjustable, which can achieve fine grinding of materials. One end of the feed pipe 3 is designed to facilitate the introduction of materials and can be connected to external feeding equipment. The inner cylinder 6 and the outer cylinder 5 are coaxially arranged to form a double-layer grinding space. The magnetic block 7 is made of a strong magnetic material, which can efficiently adsorb ferromagnetic impurities mixed in the material. The protective plate 8 is made of a wear-resistant material that does not affect the penetration of the magnetic field, which protects the magnetic block 7 and prevents it from being damaged by direct contact with the material and grinding media. The cleaning mechanism can effectively clean the impurities and materials remaining inside when the equipment is stopped. A valve is installed on the outer wall of the discharge pipe 14 to control the timing and speed of material discharge. The size of the rotating port matches the rotating block 16 to ensure that the rotating block 16 can rotate flexibly. The air intake mechanism can introduce gas into the equipment for material drying or airflow-assisted conveying, etc. The second support plate 15 is slidably connected to the base plate 1.

[0028] The cleaning mechanism includes a moving ring 9 located inside the inner cylinder 6. One side of the moving ring 9 contacts the side of the stabilizing plate 4. Cleaning blocks 10 are connected to the outer walls of multiple protective plates 8, each with a U-shaped structure. These cleaning blocks 10 are located on one side of the outer walls of the multiple protective plates 8. A cleaning brush is connected between adjacent cleaning blocks 10. These cleaning brushes contact the inner wall of the inner cylinder 6, brushing to prevent material powder residue from remaining in the inner hole of the inner cylinder 6. Pull rods 13 are evenly connected to the upper part of one side of the moving ring 9, with one end of each pull rod extending through the ring. On one side of the connecting plate 17, one end of the pull rod 13 is connected to a mounting plate, which is connected to the connecting plate 17 by bolts. On one side of the moving ring 9, a plug ring 11 is connected to the moving ring 9. On one side of the stabilizing plate 4, a slot 12 is opened at the plug ring 11. The plug ring 11 is inserted into the slot 12. The cross-sectional shape of the slot 12 is adapted to the cross-sectional shape of the plug ring 11. The plug ring 11 is made of silicone material. On one side of the connecting plate 17, a cleaning ring 18 is connected. The inner wall of the cleaning ring 18 slides in contact with one side of the outer wall of the outer cylinder 5. A cleaning port 19 is opened at the middle of the lower end of the cleaning ring 18. A cleaning tube 20 is connected at the lower end of the cleaning ring 18 at the cleaning port 19.

[0029] The outer diameter of the moving ring 9 is adapted to the inner diameter of the inner cylinder 6, allowing it to move smoothly inside the inner cylinder 6. The U-shaped structure of the cleaning block 10 can better fit the shape of the protective plate 8, ensuring comprehensive cleaning. The cleaning brush is made of a material with a certain degree of elasticity and wear resistance, which can adapt to the curvature of the inner wall of the inner cylinder 6. The pull rod 13 is made of rigid material, ensuring that sufficient force can be transmitted when the moving ring 9 is pulled. The cleaning port 19 cooperates with the cleaning tube 20 to collect and discharge the cleaned impurities.

[0030] The air intake mechanism includes an air intake pipe 21. The middle of one side of the air intake pipe 21 passes through the rotating block 16 and the connecting plate 17 and extends into the interior of the connecting plate 17. An air supply pipe 22 is circumferentially connected to one side of the outer wall of the air intake pipe 21. A connecting pipe 23 is connected to one side of each of the multiple air supply pipes 22. One end of each of the multiple connecting pipes 23 extends through to one side of the connecting plate 17. A filter screen is embedded in both the multiple connecting pipes 23 and one side of the inner wall of the air intake pipe 21.

[0031] The air inlet pipe 21 can be connected to an external air source to introduce gas. The gas delivery pipe 22 enables the gas to be distributed and delivered more evenly. The connecting pipe 23 guides the gas from the gas delivery pipe 22 to the corresponding area inside the equipment. The filter screen prevents material powder from clogging the connecting pipe 23.

[0032] Working principle: When using the device, the solid waste-based cementitious material to be ground is first fed into the inner cylinder 6 through the feed pipe 3. The drive motor on the upper side of the bottom plate 1 is started. The synchronous pulley at the output end of the drive motor drives the synchronous ring on the outer wall of the outer cylinder 5 to rotate through the synchronous belt. Since the outer cylinder 5 is connected to the stabilizing plate 4 and the inner cylinder 6, and the stabilizing plate 4 cooperates with the feed pipe 3, rotating block 16 and other components to achieve stable rotation, the outer cylinder 5 will drive the inner cylinder 6 to rotate synchronously.

[0033] At this time, the grinding media filled inside the inner cylinder 6 and the outer cylinder 5 will be lifted to a certain height and then fall down as the cylinder rotates, impacting and grinding the material. The material is first ground in the inner cylinder 6: when the inner cylinder 6 rotates, the grinding media inside it continuously impacts, squeezes and grinds the incoming solid waste-based cementitious material under the action of centrifugal force and friction, breaking the originally larger pieces of material into smaller particles. When the material is ground to the required particle size, these small pieces of material will be discharged into the outer cylinder 5 through the holes in the inner wall of the inner cylinder 6. The outer cylinder 5 continues to rotate, and the grinding media inside it will further finely grind the small pieces of material discharged from the inner cylinder 6, making the material particles even finer, meeting the fineness requirements of solid waste-based cementitious materials.

[0034] During the grinding process, the magnetic blocks 7 on the inner wall of the inner cylinder 6 generate a magnetic field through the protective plate 8, adsorbing iron filings and powder impurities mixed in the material. This ensures that the iron filings are firmly adsorbed onto the surface of the protective plate 8, preventing them from flowing with the material and affecting the grinding purity. At the same time, hot air is introduced through the air inlet pipe 21 of the air inlet mechanism. The hot air enters the space between the inner cylinder 6 and the outer cylinder 5 through the air delivery pipe 22 and the connecting pipe 23, simultaneously drying the material during the grinding process, reducing powder agglomeration and improving grinding efficiency.

[0035] After grinding, the material powder is discharged through the discharge pipe 14 on one side of the lower end of the outer cylinder 5. After the material powder is completely discharged, the adsorbed iron filings are cleaned: first, the second support plate 15 is moved to one side, so that the cleaning ring 18 slides on the outer wall of the outer cylinder 5. The connecting plate 17 is separated from one end of the inner cylinder 6. Since the pull rod 13 is fixed to the mounting plate, mounting bolts and connecting plate 17 on one side, the mounting bolts are first removed to loosen the pull rod 13 and connecting plate 17. Then, the pull rod 13 is pulled to move the moving ring 9 in the inner cylinder 6. The cleaning block 10 on the outer wall of the moving ring 9 will slide along the surface of the protective plate 8 and scrape off the adsorbed iron filings. At the same time, the cleaning brush between adjacent cleaning blocks 10 will brush the inner wall of the inner cylinder 6 to prevent material powder residue. The scraped iron filings fall off under the action of gravity and are collected by the cleaning ring 18 and discharged from the cleaning port 19 and cleaning pipe 20.

[0036] After cleaning, push the pull rod 13 to reset the moving ring 9, and then fix one side of the pull rod 13 to the connecting plate 17 with the mounting bolts. The silicone insert ring 11 on one side of the moving ring 9 is inserted into the slot 12 of the stabilizing plate 4 to ensure the sealing of the inner cylinder 6. The whole process realizes that the grinding and discharge are completed first and then the iron filings are cleaned, avoiding the contamination of the material powder when cleaning the iron filings, and effectively improving the grinding efficiency and finished product purity of solid waste-based cementitious materials.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A grinding device for solid waste-based cementitious materials, comprising a base plate (1), characterized in that, A first support plate (2) is connected to one side of the upper end of the base plate (1). A feed pipe (3) is connected to the upper part of one side of the first support plate (2). One end of the feed pipe (3) extends through to one side of the first support plate (2). A rolling port is opened on the first support plate (2) corresponding to the feed pipe (3). The feed pipe (3) rotates inside the rolling port. A stabilizing plate (4) is connected to one side of the outer wall of the feed pipe (3). An outer cylinder (5) is connected to one side of the stabilizing plate (4). An inner cylinder (6) is connected to one side of the stabilizing plate (4). The inner cylinder (6) is located inside the outer cylinder (5). A magnet is embedded circumferentially on the inner wall of the inner cylinder (6). Block (7), the inner wall of the inner cylinder (6) is connected to a protective plate (8) at a number of magnetic blocks (7), the stabilizing plate (4) is connected to a cleaning mechanism on one side, the lower end of the outer cylinder (5) is connected to a discharge pipe (14), the upper end of the bottom plate (1) is connected to a second support plate (15) away from the first support plate (2), a rotating port is opened in the middle of one side of the second support plate (15), a rotating block (16) is rotatably connected to the inner wall of the rotating port, a connecting plate (17) is connected to one side of the rotating block (16), an air intake mechanism is connected in the middle of one side of the rotating block (16), and the outer cylinder (5) is driven by a drive assembly.

2. The grinding device for solid waste-based cementitious materials according to claim 1, characterized in that, The cleaning mechanism includes a moving ring (9), which is located inside the inner cylinder (6). One side of the moving ring (9) is in contact with one side of the stabilizing plate (4). The outer wall of the moving ring (9) is connected to a cleaning block (10) corresponding to the outer wall of a plurality of protective plates (8). The cleaning block (10) is U-shaped and the plurality of cleaning blocks (10) are respectively located on one side of the outer wall of a plurality of protective plates (8).

3. The grinding device for solid waste-based cementitious materials according to claim 2, characterized in that, A cleaning brush is connected between two adjacent cleaning blocks (10). Multiple cleaning brushes contact the inner wall of the inner cylinder (6). The cleaning brushes can brush the inner wall of the inner cylinder (6) to avoid the presence of material powder in the inner hole of the inner cylinder (6). Pull rods (13) are evenly connected to the upper part of one side of the moving ring (9). One end of multiple pull rods (13) extends through to one side of the connecting plate (17). One end of the pull rod (13) is connected to the mounting plate. The mounting plate is connected to the connecting plate (17) by bolts.

4. The grinding device for solid waste-based cementitious materials according to claim 3, characterized in that, The movable ring (9) is connected to a plug ring (11) on one side, and a slot (12) is provided on one side of the stabilizing plate (4) corresponding to the plug ring (11). The plug ring (11) is inserted into the slot (12). The cross-sectional shape of the slot (12) is adapted to the cross-sectional shape of the plug ring (11). The plug ring (11) is made of silicone material.

5. The grinding device for solid waste-based cementitious materials according to claim 1, characterized in that, A cleaning ring (18) is connected to one side of the connecting plate (17). The inner wall of the cleaning ring (18) slides in contact with one side of the outer wall of the outer cylinder (5). A cleaning port (19) is opened in the middle of the lower end of the cleaning ring (18). A cleaning pipe (20) is connected to the lower end of the cleaning ring (18) corresponding to the cleaning port (19).

6. The grinding device for solid waste-based cementitious materials according to claim 1, characterized in that, The air intake mechanism includes an air intake pipe (21). The middle part of one side of the air intake pipe (21) passes through the rotating block (16) and the connecting plate (17) and extends into the interior of the connecting plate (17). A gas delivery pipe (22) is circumferentially connected to one side of the outer wall of the air intake pipe (21). A connecting pipe (23) is connected to one side of each of the multiple gas delivery pipes (22).

7. A grinding device for solid waste-based cementitious materials according to claim 6, characterized in that, One end of each of the multiple connecting pipes (23) extends through to one side of the connecting plate (17), and a filter screen is embedded in one side of the inner wall of both the multiple connecting pipes (23) and the air inlet pipe (21).

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