Pulverizing mill for concrete production
The grinding mill, with its multi-layer grinding disc and transmission cylinder design, solves the problems of low grinding efficiency and clogging in traditional grinding mills, achieving efficient and uniform particle grinding, thus improving concrete quality and equipment stability.
Patent Information
- Application Number
- CN202422717350.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-08
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-08
AI Technical Summary
Traditional grinding mills have low grinding efficiency, uneven particle size, and are prone to clogging.
It adopts a multi-layer grinding disc structure and a transmission cylinder design, combined with a filter screen and raised triangular blocks, to achieve multiple grinding and screening processes and avoid clogging.
It improves grinding efficiency, ensures uniform particle size, enhances concrete quality, and strengthens the stability of the grinding mill.
Smart Images
Figure CN223491043U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of concrete production technology, specifically to a grinding mill used in concrete production. Background Technology
[0002] In the concrete production process, grinding mills are an indispensable piece of equipment. Their main function is to grind concrete raw materials to achieve the required particle size. Traditional grinding mills typically employ a single grinding structure, where the raw materials are ground once inside the grinding drum and then discharged directly.
[0003] However, this structure has some problems, such as low grinding efficiency, uneven particle size, and susceptibility to clogging. To solve these problems, a grinding mill that can improve grinding efficiency, ensure uniform particle size, and avoid clogging is needed. Utility Model Content
[0004] The purpose of this invention is to provide a grinding mill for concrete production to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: A grinding mill for concrete production includes a support frame, a grinding cylinder fixed above the support frame, a feed inlet at the top of the grinding cylinder, a drive shaft rotatably connected to the top plate of the grinding cylinder, a third grinding disc fixed at the bottom end of the drive shaft, a grinding disc sleeved and fixed on the shaft body of the drive shaft, a second grinding disc below the first grinding disc, the second grinding disc fixed to the inner wall of the grinding cylinder, the third grinding disc below the second grinding disc, the drive shaft movably passing through the second grinding disc, a fourth grinding disc and a support plate below the third grinding disc, both the fourth grinding disc and the support plate being fixed to the grinding cylinder. A connecting plate is provided between the inner wall of the fourth grinding disc and the support plate. Springs are fixed on the top and bottom surfaces of the connecting plate. One end of each set of springs is fixed to the bottom surface of the fourth grinding disc and the top surface of the support plate, respectively. Through slots are provided on the surfaces of the second grinding disc, the fourth grinding disc, and the support plate. The three sets of through slots are penetrated by the transmission cylinder. A connecting rod is fixed on the surface of the transmission cylinder. One end of the connecting rod is fixed to the surface of the connecting plate. A filter screen is provided inside the transmission cylinder. A discharge port and a second inlet are provided on the surface of the transmission cylinder. Multiple triangular blocks are fixed on the top surface of the third grinding disc. A protrusion is fixed on the surface of the transmission cylinder, and the protrusion contacts the triangular blocks.
[0006] Preferably, the support frame includes a base plate, a collar, and multiple support rods fixed on the base plate. The base plate is a circular ring plate, the top of the support rods is fixed to the outer ring surface of the collar, the collar is sleeved and fixed on the outer wall of the grinding cylinder, the grinding cylinder has a cylindrical structure, and the bottom end of the grinding cylinder is integrally formed with a second discharge port, which is an inverted frustum cover.
[0007] Preferably, a motor is fixed on the top surface of the grinding cylinder, the top end of the driving shaft is drivingly connected to the power output end of the motor, the grinding disc is in the shape of an annular plate, the outer diameter of the grinding disc is smaller than the inner diameter of the inner wall of the grinding cylinder, and a gap is reserved between the outer ring surface of the grinding disc and the inner wall of the grinding cylinder.
[0008] Preferably, there are multiple through grooves, and the multiple through grooves are arranged and distributed around the driving shaft as the central axis. The third grinding disc is located between multiple transmission cylinders, and the transmission cylinders are in the shape of an arc-shaped frame structure.
[0009] Preferably, the filter screen is inclined at the top of the transmission cylinder, the discharge port is above the filter screen, the second feed port is below the filter screen, the filter screen is in the shape of a "convex" shaped plate, the bottom end of the filter screen is fixed to the bottom surface of the discharge port, the discharge port is between the second grinding disc and the third grinding disc, and the second feed port is above the fourth grinding disc.
[0010] Preferably, the triangular blocks are in the shape of triangular prisms, there are multiple triangular blocks, and the multiple triangular blocks are arranged and distributed equidistantly and equally sized along the top edge of the third grinding disc. The protrusion is in the shape of a cylinder, and the protrusion is below the discharge port.
[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0012] The pulverizer for concrete production proposed by the present utility model, by setting multiple layers of grinding discs (including the grinding disc, the second grinding disc, the third grinding disc and the fourth grinding disc), enables the raw materials to be ground multiple times in the grinding cylinder, thereby improving the grinding efficiency. At the same time, the design of the through grooves between the grinding discs and the transmission cylinders allows the ground raw materials to be smoothly transmitted to the next layer for further grinding or screening; by setting the filter screen inside the transmission cylinder, the ground particles can be screened, and the particles that meet the requirements will directly fall, while the particles that do not meet the requirements will be further ground by the subsequent components. This design ensures the uniformity of the particle fineness and improves the quality of the concrete; by setting protrusions on the transmission cylinder and cooperating with the triangular blocks on the third grinding disc, the transmission cylinder can generate up and down movements during the grinding process. This movement can effectively avoid the risk of the filter screen being blocked by particles and improve the overall stability of the pulverizer. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a schematic structural diagram of the present utility model;
[0014] Figure 2 is a schematic diagram of the internal structure after the grinding cylinder of the present utility model is剖开;
[0015] Figure 3 is Figure 2 the front view of the structure in
[0016] Figure 4 is a schematic diagram of the structure after the transmission cylinder of the present utility model is剖开. It should be noted that the Chinese character "剖开" in line 25 of the English translation seems to be an incorrect or incomplete expression. It might be better to use a more accurate term like "sectioned" or "opened up" to convey the intended meaning more precisely. However, based on the translation requirements, the text is presented as above.
[0017] In the diagram: 1. Support frame; 2. Grinding cylinder; 3. Feed inlet; 4. Motor; 5. Drive shaft; 6. Grinding disc; 7. Second grinding disc; 8. Through groove; 9. Transmission cylinder; 10. Third grinding disc; 11. Fourth grinding disc; 12. Discharge port; 13. Second feed inlet; 14. Support plate; 15. Spring; 16. Connecting plate; 17. Second discharge port; 18. Connecting rod; 19. Triangular block; 20. Protrusion; 21. Filter screen. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0019] Please see Figures 1 to 4 This utility model provides a technical solution: a grinding mill for concrete production, including a support frame 1, with a grinding cylinder 2 fixed above the support frame 1. The support frame 1 includes a base plate, a collar, and multiple support rods fixed to the base plate. The base plate is a circular ring plate. The top ends of the support rods are fixed to the outer ring surface of the collar. The collar is fitted and fixed to the outer wall of the grinding cylinder 2. The grinding cylinder 2 has a cylindrical structure. A second discharge port 17 is integrally formed at the bottom end of the grinding cylinder 2. The second discharge port 17 is an inverted frustum cover. A feed inlet 3 is provided at the top end of the grinding cylinder 2. The top plate of the grinding cylinder 2 rotates. A drive shaft 5 is connected, and a third grinding disc 10 is fixed at the bottom end of the drive shaft 5. A grinding disc 6 is sleeved and fixed on the shaft body of the drive shaft 5. A motor 4 is fixed on the top surface of the grinding cylinder 2. The top end of the drive shaft 5 is connected to the power output end of the motor 4. The grinding disc 6 is a circular ring plate. The outer diameter of the grinding disc 6 is smaller than the inner diameter of the grinding cylinder 2. A gap is reserved between the outer ring surface of the grinding disc 6 and the inner wall of the grinding cylinder 2. A second grinding disc 7 is provided below the grinding disc 6. The second grinding disc 7 is fixed to the inner wall of the grinding cylinder 2. The third grinding disc 10 is located below the second grinding disc 7. The drive shaft 5 moves through the second grinding disc 7. Below the third grinding disc 10, there is a fourth grinding disc 11 and a support plate 14. The fourth grinding disc 11 and the support plate 14 are both fixed to the inner wall of the grinding cylinder 2. A connecting plate 16 is provided between the fourth grinding disc 11 and the support plate 14. Springs 15 are fixed on the top and bottom surfaces of the connecting plate 16. One end of each set of springs 15 is fixed to the bottom surface of the fourth grinding disc 11 and the top surface of the support plate 14, respectively. Through slots 8 are provided on the surfaces of the second grinding disc 7, the fourth grinding disc 11 and the support plate 14. The three sets of through slots 8 are penetrated by the transmission cylinder 9.
[0020] In operation, the raw material is fed into the grinding cylinder 2 through the feed inlet 3. Then, the motor 4 drives the drive shaft 5 to rotate, and the rotation of the drive shaft 5 synchronously drives the grinding disc 6 to rotate. The raw material falls from the gap between the grinding disc 6 and the grinding cylinder 2 into the space between the grinding disc 6 and the second grinding disc 7. The grinding disc 6 and the second grinding disc 7 then grind the raw material. The ground raw material enters the transmission cylinder 9 through the through groove 8 on the surface of the second grinding disc 7 and is then transported downwards. During the transmission process in the transmission cylinder 9, the particles are screened by the subsequent grinding components. Particles that meet the requirements fall directly, while particles that do not meet the requirements are further ground by the subsequent components. With the above structure, when processing concrete raw materials, simple grinding can be performed, and then subsequent screening can be used to separately grind particles that do not meet the standards. This improves the overall grinding efficiency and allows the raw material to be added into the grinding cylinder 2 at a higher frequency.
[0021] A connecting rod is fixed to the surface of the transmission cylinder 9, and one end of the connecting rod is fixed to the surface of the connecting plate 16. Multiple through slots 8 are provided, and the multiple through slots 8 are arranged around the drive shaft 5 as the central axis. The third grinding disc 10 is located between the multiple transmission cylinders 9. The transmission cylinder 9 has an arc-shaped frame structure. A filter screen 21 is provided inside the transmission cylinder 9. The surface of the transmission cylinder 9 has a discharge port 12 and a second feed port. The filter screen 21 is inclined at the top of the transmission cylinder 9. The discharge port 12 is above the filter screen 21, and the second feed port is below the filter screen 21. The filter screen 21 is a "convex" shaped plate. The bottom end of the filter screen 21 is fixed to the bottom surface of the discharge port 12. The discharge port 12 is located between the second grinding disc 7 and the third grinding disc 10. The second feed port is located above the fourth grinding disc 11. The top surface of the third grinding disc 10 is fixed with multiple triangular blocks 19, and the surface of the transmission cylinder 9 is fixed with protrusions 20. The protrusions 20 and the triangular blocks 19 are in contact. The triangular blocks 19 are triangular prisms. Multiple triangular blocks 19 are provided. The multiple triangular blocks 19 are arranged at equal distances and of equal size along the edge of the top surface of the third grinding disc 10. The protrusions 20 are cylindrical and are located below the discharge port 12.
[0022] In operation, after the initial grinding, the particles enter the transmission cylinder 9 from the top and fall onto the filter screen 21. Qualified particles fall through the filter screen 21 and are discharged, while substandard particles follow the inclined filter screen 21 and enter the third grinding disc 10 through the discharge port 12 for secondary grinding. After grinding, they re-enter the transmission cylinder 9 through the second feed port 13. Simultaneously, as the third grinding disc 10 rotates, it drives the triangular block 19 to rotate. After rotation, the inclined surface of the triangular block 19 contacts the protrusion 20 and, together with the protrusion 20, lifts the transmission cylinder 9. After the transmission cylinder 9 is lifted, the connecting rod 18 drives the connecting plate 16 to move. When the connecting plate 16 moves, it compresses or stretches the spring 15, allowing the transmission cylinder 9 to return to its original position after the triangular block 19 passes through, thus preventing excessive falling speed. Through this structure, during screening, the triangular block 19 and the protrusion 20 work together to make the transmission cylinder 9 move up and down, thereby avoiding the risk of the filter screen 21 being blocked by particles and improving the overall stability of the grinding mill.
[0023] The overall operating process is as follows: Raw materials are fed into the grinding cylinder 2 through the feed inlet 3. Then, the motor 4 drives the drive shaft 5 to rotate, which in turn drives the grinding disc 6 to rotate. The grinding disc 6 and the second grinding disc 7 then grind the raw materials. The ground raw materials are then conveyed downwards through the transfer cylinder 9. During this process, the subsequent grinding components screen the particles. Particles that meet the requirements fall directly down, while those that do not meet the requirements are further ground by the subsequent components. After the initial grinding, the particles fall onto the filter screen 21. Qualified particles fall through the filter screen 21 and are discharged, while unqualified particles... The qualified particles will pass through the inclined filter screen 21 and the discharge port 12 into the third grinding disc 10 for secondary grinding. After grinding, they will enter the interior of the transmission cylinder 9 again through the second feed port 13. At the same time, when the third grinding disc 10 rotates, it will drive the triangular block 19 to rotate synchronously. After the triangular block 19 rotates, the inclined surface of it contacts the protrusion 20 and, together with the protrusion 20, lifts the transmission cylinder 9. After the transmission cylinder 9 is lifted, the connecting rod 18 will drive the connecting plate 16 to move. When the connecting plate 16 moves, it will compress or stretch the spring 15, so that the transmission cylinder 9 can be reset after the triangular block 19 passes and avoid falling too fast.
[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A grinding mill for concrete production, comprising a support frame (1), characterized in that: A grinding cylinder (2) is fixed above the support frame (1). A feed inlet (3) is provided at the top of the grinding cylinder (2). A drive shaft (5) is rotatably connected to the top plate of the grinding cylinder (2). A third grinding disc (10) is fixed at the bottom of the drive shaft (5). A grinding disc (6) is sleeved and fixed on the shaft of the drive shaft (5). A second grinding disc (7) is provided below the grinding disc (6). The second grinding disc (7) is fixed to the inner wall of the grinding cylinder (2). The third grinding disc (10) is located below the second grinding disc (7). The drive shaft (5) moves through the second grinding disc (7). A fourth grinding disc (11) and a support plate (14) are provided below the third grinding disc (10). The fourth grinding disc (11) and the support plate (14) are both fixed to the inner wall of the grinding cylinder (2). A connecting plate (16) is provided between the fourth grinding disc (11) and the support plate (14). Springs (15) are fixed on the top surface of (16) and the bottom surface of the connecting plate (16). One end of the two sets of springs (15) is fixed on the bottom surface of the fourth grinding disc (11) and the top surface of the support plate (14). The surfaces of the second grinding disc (7), the fourth grinding disc (11) and the support plate (14) are all provided with through grooves (8). The three sets of through grooves (8) are penetrated by the transmission cylinder (9). A connecting rod (18) is fixed on the surface of the transmission cylinder (9). One end of the connecting rod (18) is fixed on the surface of the connecting plate (16). A filter screen (21) is provided inside the transmission cylinder (9). A discharge port (12) and a second feed port are provided on the surface of the transmission cylinder (9). Multiple triangular blocks (19) are fixed on the top surface of the third grinding disc (10). A protrusion (20) is fixed on the surface of the transmission cylinder (9). The protrusion (20) and the triangular blocks (19) are in contact.
2. A grinding mill for concrete production according to claim 1, characterized in that: The support frame (1) includes a base plate, a collar and multiple support rods fixed on the base plate. The base plate is a circular ring plate. The top of the support rod is fixed on the outer ring surface of the collar. The collar is fitted and fixed on the outer wall of the grinding cylinder (2). The grinding cylinder (2) has a cylindrical structure. The bottom end of the grinding cylinder (2) is integrally formed with a second discharge port (17). The second discharge port (17) is an inverted frustum cover.
3. A grinding mill for concrete production according to claim 1, characterized in that: The top surface of the grinding cylinder (2) is fixed with a motor (4), and the top end of the drive shaft (5) is connected to the power output end of the motor (4). The grinding disc (6) is a circular plate. The outer diameter of the grinding disc (6) is smaller than the inner diameter of the grinding cylinder (2). A gap is reserved between the outer ring surface of the grinding disc (6) and the inner wall of the grinding cylinder (2).
4. A grinding mill for concrete production according to claim 1, characterized in that: The through slot (8) is provided in multiple ways. The multiple through slots (8) are arranged and distributed with the drive shaft (5) as the central axis. The third grinding disc (10) is located between multiple transmission cylinders (9). The transmission cylinders (9) have an arc-shaped frame structure.
5. A grinding mill for concrete production according to claim 1, characterized in that: The filter screen (21) is inclined at the top of the transmission cylinder (9), the discharge port (12) is above the filter screen (21), the second feed port is below the filter screen (21), the filter screen (21) is a "convex" shaped plate, the bottom end of the filter screen (21) is fixed to the bottom surface of the discharge port (12), the discharge port (12) is between the second grinding disc (7) and the third grinding disc (10), and the second feed port is above the fourth grinding disc (11).
6. A grinding mill for concrete production according to claim 5, characterized in that: The triangular block (19) has a triangular prism structure, and there are multiple triangular blocks (19). The multiple triangular blocks (19) are arranged at equal distances and of equal size along the top edge of the third grinding disc (10). The protrusion (20) has a cylindrical structure and is located below the discharge port (12).