A precision grading type intelligent cement grinding device

Abstract

This invention discloses a precision grading intelligent cement grinding device, comprising: a support member, on which a sieve is provided for grinding and screening mixed materials, and on which a discharge member is provided for discharging the screened cement powder; in this invention, the sieve is equipped with a multi-layer stacked processing box and a conical worktable, and a linkage operation structure is formed by symmetrically arranged grinding rollers and push rods. The cement powder is precisely graded by means of vertically aligned screening holes, and the forward and reverse rotation modes are used to switch between material grinding and pushing and coarse material discharge functions. The multi-stage sieves connected in series can complete progressive fine grinding, which can not only ensure the uniformity of material grinding, but also strictly control the particle size distribution of cement powder, and is suitable for the grinding and processing needs of various raw materials.

Description

Technical Field

[0001] This invention relates to the field of cement grinding equipment technology, specifically a precision grading intelligent cement grinding device. Background Technology

[0002] Cement grinding is a crucial final step in the cement production process. Cement clinker, gypsum, slag, fly ash, and other mixed materials are fed into grinding equipment according to the specified proportions. Through mechanical impact and grinding, the materials are processed into cement powder that meets the particle size requirements. This process controls the cement's strength, setting time, and performance. Cement grinding and grading involves using powder classifiers to separate the ground materials by particle size, resulting in cement powder of different finenesses. Different construction scenarios have different requirements for setting speed, early strength, heat of hydration, and crack resistance, so cement powder of different finenesses must be matched. Cement plants grade and classify cement powder to meet these needs.

[0003] Most existing cement grinding and grading equipment is mainly single-stage grinding and screening, lacking a multi-stage progressive processing structure. There is still room for improvement in the uniformity of material grinding, and the control precision of cement powder particle size distribution can be further optimized. The equipment operation mode is relatively fixed, making it difficult to flexibly switch between grinding and pushing and coarse material discharge operation states. There is still room for improvement in adaptability to grinding various raw materials with different characteristics and accurately matching fineness adjustment in multiple scenarios. Summary of the Invention

[0004] The purpose of this invention is to address the problems that most existing cement grinding and grading equipment mainly focuses on single-stage grinding and screening, lacks a multi-stage progressive processing structure, has room for improvement in the uniformity of material grinding, can further optimize the control precision of cement powder particle size distribution, has a relatively fixed equipment operation mode, makes it difficult to flexibly switch between grinding and pushing and coarse material discharge operation states, and still has room for improvement in adaptability to grinding various raw materials with different characteristics and accurately matching fineness adjustment in multiple scenarios. Therefore, this invention provides a precise grading intelligent cement grinding device.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a precision grading intelligent cement grinding device, comprising: a support member, wherein a sieve member for grinding and screening mixed materials is provided on the support member, and a discharge member for discharging the screened cement powder is provided on the sieve member; The support includes a support rod, a mounting plate is fixedly connected to the top of the support rod, a motor is fixedly connected to the center of the bottom of the mounting plate, and the output end of the motor passes through the mounting plate and is fixedly connected to a connecting shaft. The screening component includes a processing box disposed above the support component. A workbench is fixedly connected inside the processing box. The workbench is conical, and a screening area is provided in the central area of ​​the workbench. A screening hole is provided through the top of the screening area of ​​the workbench. A screening area is also provided at the bottom of the inside of the processing box. A rotating shaft is provided at the center of the processing box. The rotating shaft passes through the processing box and the worktable and is rotatably connected to the processing box and the worktable. The bottom end of the rotating shaft is fixedly connected to the top end of the connecting shaft. A connecting lug is fixedly connected to the outer circular surface of the rotating shaft. A rotating shaft is rotatably connected to the inner side of the connecting lug. A connecting rod is fixedly connected to the outer circular surface of the rotating shaft. A grinding roller is rotatably connected to the outer circular surface of the connecting rod. A push rod is fixedly connected to the outer circular surface of the rotating shaft.

[0006] As a further embodiment of the present invention: a discharge frame is fixedly connected to the top of the mounting plate. The discharge frame is U-shaped, with its opening facing the outer circular surface of the mounting plate and flush with it. The discharge frame is arranged vertically. A guide platform is fixedly connected inside the discharge frame. The guide platform has a right-angled triangular cross-section with its inclined surface facing upwards and the lower part of the inclined surface facing the outer circular surface of the mounting plate.

[0007] As a further embodiment of the present invention: the support rods are arranged in four groups, distributed in a circular array with the center of the mounting plate, and the discharge frame is arranged in four groups, distributed in a 90-degree circular array with the center of the mounting plate.

[0008] As a further embodiment of the present invention: the processing box is cylindrical, the screening area is circular and its diameter is half the inner diameter of the processing box, and multiple sets of screening holes are provided, which are evenly distributed in the screening area. The number of screening holes in the screening area on the processing box is the same as the number of screening holes in the screening area on the worktable, the hole diameter is the same and the hole position is aligned. A discharge groove is provided through the outer circular surface of the processing box.

[0009] As a further embodiment of the present invention: the connecting ear is U-shaped, the rotating shaft is T-shaped and the axis of the rotating shaft is perpendicular to the axis of the rotation shaft, the connecting rod is T-shaped, the grinding roller is located in the non-screening area of ​​the conical worktable and abuts against the top of the conical worktable, the push rod is C-shaped and the bottom end of the push rod is in contact with the top of the conical worktable, and the connecting ear, rotating shaft, connecting rod, grinding roller and push rod are all provided in two sets, distributed at 180 degrees with the axis of the rotating shaft, and the grinding roller and push rod are distributed at 90 degrees.

[0010] As a further solution of the present invention: The grinding roller includes an inner tube sleeved outside the connecting rod and rotatably connected to the connecting rod. An outer cylinder is fixedly connected to the outside of the inner tube, and the opening of the outer cylinder faces away from the rotating shaft. A counterweight block is inserted into the outer cylinder, and the outer cylinder penetrates through the counterweight block and is threadedly connected to the counterweight block. A plug is fixedly connected to one side of the counterweight block facing the rotating shaft, and a slot is opened on the side of the counterweight block away from the rotating shaft. Both the plug and the slot are provided with four groups, symmetrically distributed. A plurality of counterweight blocks are arranged in the outer cylinder, and adjacent two groups of counterweight blocks are inserted and matched through the plug and the slot, so that the plurality of counterweight blocks rotate synchronously.

[0011] As a further solution of the present invention: The discharging member includes a connecting table fixedly connected to the outside of the processing box. There are two groups of connecting tables, symmetrically distributed at two places of the discharge chute. A hydraulic rod is fixedly connected to the side of the connecting table away from the processing box. The movable end of the hydraulic rod is fixedly connected to a connecting plate. Two hydraulic rods are arranged on each connecting table, and the movable ends of the two hydraulic rods jointly connect to a group of connecting plates. The connecting plate is L-shaped. One end of the connecting plate is fixedly connected to a baffle. The two connecting plates are symmetrically distributed outside the baffle. The baffle is inserted into the discharge chute. A diversion pipe is fixedly connected to the outside of the processing box. There are three groups of diversion pipes, and the three diversion pipes and the baffle are distributed at ninety degrees around the center of the processing box. The bottom end of the diversion pipe is fixedly connected to the top end of the discharge frame.

[0012] As a further solution of the present invention: There are four groups of screening members, distributed in a vertical shape, and the upper and lower ends of adjacent two groups of processing boxes are fixedly connected. The discharge chutes on adjacent two groups of screening members among the four screening members are distributed at ninety degrees. A top cover is fixedly connected to the top end of the processing box at the top. A feed hopper is connected through the top end of the top cover. The gaps between the three diversion pipes and the two connecting plates on the same side of the outer circumferential surface of each processing box are connected, and the discharge frames on the same side are connected.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. In the present invention, by arranging multiple stacked processing boxes and a conical workbench in the screening member, relying on the symmetrically arranged grinding rollers and pushing rods to form a linkage operation structure, realizing precise grading of cement powder through the vertically aligned screening holes, and using the forward and reverse rotation mode to switch the functions of material grinding and pushing and coarse material discharge. The multi-stage screening members in series can complete progressive fine grinding, which can not only ensure the uniformity of material grinding but also strictly control the particle size distribution of cement powder, meeting the grinding processing requirements of various raw materials. 2. In this invention, the discharge component adopts an automatic opening and closing structure with a hydraulic rod-driven baffle. This allows for flexible control of the opening and closing timing of the discharge chute according to the grinding conditions, precisely regulating the discharge rhythm of coarse particles. Combined with the surrounding guide pipes and discharge frame, a closed flow path is formed, effectively preventing cement powder from scattering and causing dust pollution and material waste. At the same time, it is compatible with the layout of multiple screening components, realizing the centralized collection and discharge of layered materials, resulting in stronger structural adaptability and practicality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the support structure in this invention; Figure 3 In this invention Figure 2 A schematic diagram of the structure at point A; Figure 4 This is a schematic diagram of the processing box in this invention; Figure 5 This is a schematic diagram of the structure of the grinding roller in this invention; Figure 6 In this invention Figure 5 A schematic diagram of the structure at point B; Figure 7 This is a schematic diagram of the material discharge component in this invention; Figure 8 In this invention Figure 7 A schematic diagram of the structure at point C.

[0015] In the diagram: 1. Support component; 11. Support rod; 12. Mounting plate; 13. Motor; 14. Connecting shaft; 15. Discharge frame; 16. Guide table; 2. Screening component; 21. Processing box; 22. Workbench; 23. Discharge chute; 24. Rotating shaft; 25. Connecting ear; 26. Rotating shaft; 27. Connecting rod; 28. Grinding roller; 281. Inner tube; 282. Outer cylinder; 283. Counterweight; 284. Insert block; 285. Slot; 29. ​​Push rod; 3. Discharge component; 31. Connecting table; 32. Hydraulic rod; 33. Connecting plate; 34. Baffle; 35. Guide pipe; 4. Top cover; 5. Feed hopper. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0018] Reference Figure 1 In this embodiment of the invention, a precision grading intelligent cement grinding device includes: a support member 1, a sieve member 2 for grinding and screening mixed materials on the support member 1, and a discharge member 3 for discharging the screened cement powder on the sieve member 2.

[0019] Reference Figures 2 to 3 The support component 1 includes a support rod 11, with a mounting plate 12 fixedly connected to the top of the support rod 11. The support rod 11 is arranged in four groups, arranged in a circular array with the mounting plate 12 as the center. A motor 13 is fixedly connected to the bottom center of the mounting plate 12. The output end of the motor 13 passes through the mounting plate 12 and is fixedly connected to a connecting shaft 14. A discharge frame 15 is fixedly connected to the top of the mounting plate 12. The discharge frame 15 is U-shaped, with its opening facing the outer circular surface of the mounting plate 12 and flush with it. The discharge frame 15 is arranged vertically. A guide platform 16 is fixedly connected inside the discharge frame 15. The guide platform 16 has a right-angled triangular cross-section with the inclined surface facing upwards and the lower part of the inclined surface facing the outer circular surface of the mounting plate 12. The discharge frame 15 is arranged in four groups, arranged in a 90-degree circular array with the mounting plate 12 as the center.

[0020] The above scheme is adopted: by setting the support component 1, which consists of support rods 11, mounting plate 12, motor 13, connecting shaft 14, discharge frame 15 and guide platform 16, the four sets of support rods 11 are arranged in a circular array to stably support the overall equipment structure above. The motor 13 can stably transmit rotational power upward through the connecting shaft 14. The four sets of U-shaped discharge frames 15, together with the right-angled triangular guide platform 16, can orderly guide the graded cement powder and realize the orderly collection and discharge of powder.

[0021] Reference Figures 4 to 5 The screening component 2 includes a processing box 21 disposed above the support component 1. The processing box 21 is cylindrical, and a workbench 22 is fixedly connected inside the processing box 21. The workbench 22 is conical, and a screening area is set in the central area of ​​the workbench 22. The screening area is circular, and its diameter is half the inner diameter of the processing box 21. A screening hole is opened through the top of the screening area of ​​the workbench 22. Multiple sets of screening holes are evenly distributed in the screening area. A screening area is also set at the bottom of the interior of the processing box 21. The number of screening holes in the screening area of ​​the processing box 21 is the same as the number of screening holes in the screening area of ​​the workbench 22, the hole diameter is the same, and the hole positions are aligned. The outer circle of the processing box 21 is... A discharge chute 23 is provided through the surface of the processing box 21. A rotating shaft 24 is located at the center of the processing box 21. The rotating shaft 24 passes through the processing box 21 and the worktable 22 and is rotatably connected to both the processing box 21 and the worktable 22. The bottom end of the rotating shaft 24 is fixedly connected to the top end of the connecting shaft 14. A connecting ear 25 is fixedly connected to the outer surface of the rotating shaft 24. The connecting ear 25 is U-shaped. A rotating shaft 26 is rotatably connected to the inner side of the connecting ear 25. The rotating shaft 26 is T-shaped, and its axis is perpendicular to the axis of the rotating shaft 24. A connecting rod 27 is fixedly connected to the outer surface of the rotating shaft 26. The connecting rod 27 is T-shaped. A grinding roller 28 is rotatably connected to the conical worktable 22. The grinding roller 28 is located in the non-screening area of ​​the conical worktable 22 and abuts against the top of the conical worktable 22. A push rod 29 is fixedly connected to the outer surface of the rotating shaft 24. The push rod 29 is C-shaped, and its bottom end fits against the top of the conical worktable 22. Two sets of connecting ears 25, rotating shaft 26, connecting rod 27, grinding roller 28, and push rod 29 are provided, distributed at 180 degrees around the axis of the rotating shaft 24, and the grinding roller 28 and push rod 29 are distributed at 90 degrees. When the rotating shaft 24 rotates clockwise, it drives the connecting ears 25, rotating shaft 26, connecting rod 27, grinding roller 28, and push rod 29. 9. When rotating synchronously, the grinding roller 28 crushes the material on the conical worktable 22. Then, the concave side of the C-shaped push rod 29 slides the material that has been crushed by the grinding roller 28 to the non-screening area of ​​the worktable 22 due to gravity and the inclined surface of the conical worktable 22. The material is then pushed to the screening area of ​​the worktable 22, so that the powder smaller than the screening hole of the screening area falls through the worktable 22 and the processing box 21, while the powder larger than the screening hole of the screening area returns to the non-screening area due to gravity and the inclined surface of the conical worktable 22. When the rotating shaft 24 reverses, the convex side of the C-shaped push rod 29 pushes the powder in the non-screening area to be discharged from the discharge trough 23.

[0022] The above scheme is adopted: a cylindrical processing box 21 is set with a conical worktable 22 through the screening component 2. The double-layer screening holes aligned with the top and bottom are used to realize the precise particle size classification of cement powder. The grinding roller 28 is driven by the rotating shaft 24 to complete the crushing and grinding of materials. With the forward and reverse switching of the push rod 29, the material is automatically pushed, screened and coarse material is discharged. It can autonomously complete the integrated operation of grinding, screening, re-grinding and discharge, with high classification accuracy and strong automation.

[0023] Reference Figures 5 to 6 The grinding roller 28 includes an inner tube 281 sleeved on the outside of the connecting rod 27 and rotatably connected to the connecting rod 27. An outer cylinder 282 is fixedly connected to the outside of the inner tube 281, and the opening of the outer cylinder 282 faces away from the rotating shaft 24. A counterweight 283 is inserted into the outer cylinder 282, and the outer cylinder 282 passes through the counterweight 283 and is threadedly connected to the counterweight 283. An insert 284 is fixedly connected to the counterweight 283 facing the rotating shaft 24. A slot 285 is opened on the side of the counterweight 283 away from the rotating shaft 24. There are four sets of inserts 284 and slots 285, which are symmetrically distributed. Multiple sets of counterweights 283 are arranged inside the outer cylinder 282. Two adjacent sets of counterweights 283 are engaged through inserts 284 and slots 285, so that multiple sets of counterweights 283 rotate synchronously.

[0024] The above scheme is adopted: the grinding roller 28 is configured with an inner tube 281, an outer cylinder 282, a counterweight 283, an insert block 284 and a slot 285. Multiple sets of counterweight blocks 283 can be freely assembled and added or removed. The insert block 284 and the slot 285 are connected to achieve linkage and synchronous rotation. The overall counterweight and crushing pressure of the grinding roller 28 can be flexibly adjusted to meet the grinding requirements of cement raw materials with different hardness and particle size, and improve the uniformity of material grinding and crushing.

[0025] Reference Figure 1 , Figure 7 and Figure 8The discharge component 3 includes a connecting platform 31 fixedly connected to the outside of the processing box 21. Two sets of connecting platforms 31 are symmetrically distributed at two locations on the discharge chute 23. A hydraulic rod 32 is fixedly connected to the side of the connecting platform 31 away from the processing box 21. A connecting plate 33 is fixedly connected to the movable end of the hydraulic rod 32. Each set of connecting platforms 31 has two sets of hydraulic rods 32, and the movable ends of the two sets of hydraulic rods 32 share a common connecting plate 33. The connecting plate 33 is L-shaped, and a baffle 34 is fixedly connected to one end of the connecting plate 33. The two sets of connecting plates 33 are symmetrically distributed outside the baffle 34. The baffle 34 is inserted into the discharge chute 23. A guide pipe 35 is fixedly connected to the outside of the processing box 21. Three sets of guide pipes 35 are provided, and the three sets of guide pipes 35 and the baffle 34 are distributed at a 90-degree angle around the center of the processing box 21. The bottom end of the guide pipe 35 is connected to... The top of the discharge frame 15 is fixedly connected. There are four sets of screening components 2 arranged in a 1-shape. The upper and lower ends of two adjacent sets of processing boxes 21 are fixedly connected. The discharge troughs 23 on two adjacent sets of screening components 2 are arranged at a 90-degree angle. The top of the processing box 21 at the top is fixedly connected to the top cover 4. The top of the top cover 4 is connected to the feed hopper 5. The gaps between the three sets of guide pipes 35 and the two sets of connecting plates 33 on the same side of the outer circle of each processing box 21 are connected, as are the discharge frame 15 on the same side. When the hydraulic rod 32 extends, the baffle 34 is pulled out of the discharge trough 23, exposing the discharge trough 23, so that the powder can be discharged from the discharge trough 23. The powder discharged from the discharge trough 23 falls into the guide pipe 35 until it enters the discharge frame 15 and is discharged along the inclined surface at the top of the guide platform 16.

[0026] The above scheme is adopted: the discharge component 3 is equipped with a connecting platform 31, hydraulic rod 32, connecting plate 33, baffle 34 and guide pipe 35. The hydraulic rod 32 is used to extend and retract to drive the baffle 34 to realize the automatic opening and closing of the discharge chute 23, which can accurately control the timing of coarse material discharge. The guide pipe 35 is connected to the discharge frame 15 to form a closed guide channel, which can realize the directional collection and conveying of graded powder, and avoid cement powder scattering and dust. It is suitable for the synchronous discharge layout of multiple sets of screening components 2.

[0027] The working principle of this invention is as follows: When this device is working, the cement mixture to be processed is first fed into the feed hopper 5. The raw material passes through the upper cover 4 and falls into the processing box 21 of the uppermost screening component 2, naturally accumulating on the surface area of ​​the conical worktable 22. Then, the motor 13 at the bottom of the support component 1 is started. After the motor 13 starts running, its output end drives the connecting shaft 14 to rotate synchronously. The connecting shaft 14 further transmits power to the rotating shaft 24, driving the rotating shaft 24 to rotate stably inside the processing box 21 and the worktable 22. During the rotation of the rotating shaft 24, the two sets of grinding rollers 28 are driven to roll circumferentially along the non-screening area of ​​the conical worktable 22 through the connecting lug 25, the rotating shaft 26 and the connecting rod 27. Relying on the weight of the grinding rollers 28 themselves and the internal counterweight 28, the grinding rollers 28 rotate in a circular motion. With the support of motor 13, the blocky and granular raw materials on the workbench 22 are continuously crushed and ground, gradually pulverizing large pieces of material into fine powder. Simultaneously, two sets of push rods 29 rotate synchronously with the rotating shaft 24. When the motor 13 drives the rotating shaft 24 to rotate forward, the concave side of the C-shaped push rod 29 naturally adheres to the material, smoothly pushing the ground material that has slid down the inclined surface of the conical workbench 22 to the non-screening area to the screening area at the center of the workbench 22. Qualified cement powder with a particle size smaller than the screening hole specification will pass through the screening holes aligned on the workbench 22 and the processing box 21, falling down into the next layer of screening components 2 for secondary grinding and fine classification, realizing multi-stage progressive grinding processing. Coarse particles that exceed the particle size standard cannot pass through. The material passing through the screening hole will slide back to the non-screening area along the inclined surface of the conical worktable 22, and be crushed again by the grinding roller 28 until the particle size meets the standard. When the equipment has been running for a period of time and too much hard coarse material that is difficult to grind accumulates in the screening area, the control motor 13 will rotate in the reverse direction. At this time, the outer convex side of the push rod 29 will be in contact with the material, pushing the coarse particles retained in the non-screening area towards the discharge chute 23 on the outer surface of the processing box 21. At the same time, the discharge component 3 will start working, and the hydraulic rod 32 on the connecting table 31 will extend outward, driving the baffle 34 to be pulled out from the discharge chute 23 through the connecting plate 33, releasing the blockage. The coarse particles will then be smoothly discharged from the discharge chute 23 and fall into the corresponding guide pipe 35. The material will fall vertically through the guide pipe 35 and finally flow into the safety channel. The material is discharged smoothly outward from the discharge frame 15 above the loading tray 12, following the triangular inclined surface of the guide table 16, thus completing the coarse material recovery. The grinding roller 28 can add or remove counterweights 283 inside its outer cylinder 282 according to the hardness of the raw material and the fineness requirements of grinding. Adjacent counterweights 283 are engaged with slots 285 through inserts 284, ensuring that multiple sets of counterweights 283 rotate synchronously and stably adjust the grinding pressure. The four sets of screening components 2 are vertically stacked and connected as one unit. The discharge troughs 23 of adjacent processing boxes 21 are staggered at ninety degrees. With the help of multiple sets of guide pipes 35, the material discharged from each layer can be orderly collected. The top cover 4 can close the top of the processing box 21 to prevent dust from overflowing during the grinding process. The entire device relies on a mechanical linkage structure.It automatically completes the entire process of feeding, multi-layer compaction, precise grading, coarse material re-grinding, timed discharge, and directional flow guidance without manual intervention. It can adapt to the different requirements of cement powder fineness in different construction scenarios, significantly improving the processing efficiency and finished product quality of cement grinding and grading. Through the multi-layer stacked processing box 21 and conical worktable 22 of the screening component 2, a linkage operation structure is formed by symmetrically arranged grinding rollers 28 and push rods 29. The vertically aligned screening holes achieve precise grading of cement powder. The forward and reverse rotation modes switch between material grinding and pushing and coarse material discharge functions. The multi-stage screening component 2 can complete the process of feeding, multi-layer compaction, precise grading, coarse material re-grinding, coarse material discharge, and coarse material discharge. This infeed fine grinding system ensures both uniform material grinding and strict control over cement powder particle size distribution, making it suitable for grinding various raw materials. The discharge component 3 utilizes a hydraulic rod 32 to drive the automatic opening and closing structure of the baffle 34, allowing for flexible control of the opening and closing timing of the discharge chute 23 based on grinding conditions. This precisely regulates the discharge rhythm of coarse particles. Combined with the surrounding guide pipes 35 and the discharge frame 15, a closed flow path is formed, effectively preventing cement powder from scattering and causing dust pollution and material waste. It also accommodates the layout of multiple screening components 2, enabling centralized collection and discharge of layered materials, resulting in enhanced structural adaptability and practicality.

[0028] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A precision grading intelligent cement grinding device, comprising: The support member (1) is characterized in that a sieve (2) for grinding and screening the mixed materials is provided on the support member (1), and a discharge member (3) for discharging the screened cement powder is provided on the sieve (2). The support member (1) includes a support rod (11), the top end of the support rod (11) is fixedly connected to a mounting plate (12), the bottom center of the mounting plate (12) is fixedly connected to a motor (13), the output end of the motor (13) passes through the mounting plate (12) and is fixedly connected to a connecting shaft (14). The screening component (2) includes a processing box (21) disposed above the support component (1). A workbench (22) is fixedly connected inside the processing box (21). The workbench (22) is conical. A screening area is provided in the central area of ​​the workbench (22). A screening hole is provided through the top of the screening area of ​​the workbench (22). A screening area is also provided at the bottom of the processing box (21). A rotating shaft (24) is provided at the center of the processing box (21). The rotating shaft (24) passes through the processing box (21) and the worktable (22) and is rotatably connected to the processing box (21) and the worktable (22). The bottom end of the rotating shaft (24) is fixedly connected to the top end of the connecting shaft (14). A connecting ear (25) is fixedly connected to the outer circle of the rotating shaft (24). A rotating shaft (26) is rotatably connected to the inner side of the connecting ear (25). A connecting rod (27) is fixedly connected to the outer circle of the rotating shaft (26). A grinding roller (28) is rotatably connected to the outer circle of the connecting rod (27). A push rod (29) is fixedly connected to the outer circle of the rotating shaft (24).

2. The precision grading intelligent cement grinding device according to claim 1, characterized in that, The top of the mounting plate (12) is fixedly connected to a discharge frame (15). The discharge frame (15) is U-shaped, with its opening facing the outer circular surface of the mounting plate (12) and flush with it. The discharge frame (15) is vertically connected. A guide platform (16) is fixedly connected inside the discharge frame (15). The side cross section of the guide platform (16) is a right triangle with the inclined surface facing upwards and the lower part of the inclined surface facing the outer circular surface of the mounting plate (12).

3. The precision grading intelligent cement grinding device according to claim 2, characterized in that, The support rods (11) are arranged in four groups, and are distributed in a circular array with the center of the mounting plate (12). The discharge frame (15) is arranged in four groups, and is distributed in a ninety-degree circular array with the center of the mounting plate (12).

4. The precision grading intelligent cement grinding device according to claim 3, characterized in that, The processing box (21) is cylindrical, the screening area is circular and its diameter is half the inner diameter of the processing box (21). Multiple sets of screening holes are provided and evenly distributed in the screening area. The number of screening holes in the screening area of ​​the processing box (21) is the same as the number of screening holes in the screening area of ​​the workbench (22), the same hole diameter and the hole position are aligned. The outer circular surface of the processing box (21) is provided with a discharge groove (23).

5. The precision grading intelligent cement grinding device according to claim 4, characterized in that, The connecting ear (25) is U-shaped, the rotating shaft (26) is T-shaped, and the axis of the rotating shaft (26) is perpendicular to the axis of the rotating shaft (24). The connecting rod (27) is T-shaped. The grinding roller (28) is located in the non-screening area of ​​the conical worktable (22) and abuts against the top of the conical worktable (22). The push rod (29) is C-shaped, and the bottom end of the push rod (29) fits against the top of the conical worktable (22). The connecting ear (25), rotating shaft (26), connecting rod (27), grinding roller (28) and push rod (29) are all provided in two sets, distributed at 180 degrees with the axis of the rotating shaft (24). The grinding roller (28) and push rod (29) are distributed at 90 degrees.

6. The precision grading intelligent cement grinding device according to claim 5, characterized in that, The grinding roller (28) includes an inner tube (281) sleeved on the outside of the connecting rod (27) and rotatably connected to the connecting rod (27). An outer cylinder (282) is fixedly connected to the outside of the inner tube (281), and the opening of the outer cylinder (282) faces away from the rotating shaft (24). A counterweight (283) is inserted into the outer cylinder (282), and the outer cylinder (282) passes through the counterweight (283) and is threadedly connected to the counterweight (283). A plug (284) is fixedly connected to the side facing the rotating shaft (24). A slot (285) is provided on the side of the counterweight (283) away from the rotating shaft (24). There are four sets of plugs (284) and slots (285) symmetrically distributed. Multiple sets of counterweights (283) are provided inside the outer cylinder (282). Two adjacent sets of counterweights (283) are connected by plugs (284) and slots (285) to make multiple sets of counterweights (283) rotate synchronously.

7. The precision grading intelligent cement grinding device according to claim 6, characterized in that, The discharge component (3) includes a connecting platform (31) fixedly connected to the outside of the processing box (21). Two sets of connecting platforms (31) are symmetrically distributed at two locations in the discharge chute (23). A hydraulic rod (32) is fixedly connected to the side of the connecting platform (31) away from the processing box (21). A connecting plate (33) is fixedly connected to the movable end of the hydraulic rod (32). Each set of connecting platforms (31) has two sets of hydraulic rods (32), and the movable ends of the two sets of hydraulic rods (32) share a common connecting plate (33). The plate (33) is L-shaped. One end of the connecting plate (33) is fixedly connected to a baffle (34). Two sets of connecting plates (33) are symmetrically distributed on the outside of the baffle (34). The baffle (34) is inserted into the discharge trough (23). The outside of the processing box (21) is fixedly connected to a guide pipe (35). There are three sets of guide pipes (35). The three sets of guide pipes (35) and the baffle (34) are distributed at a 90-degree angle around the center of the processing box (21). The bottom end of the guide pipe (35) is fixedly connected to the top end of the discharge frame (15).

8. The precision grading intelligent cement grinding device according to claim 7, characterized in that, There are four groups of the screening members (2), which are distributed in an "I" shape, and the upper and lower ends of adjacent treatment boxes (21) are fixedly connected. The discharge slots (23) on adjacent screening members (2) among the four groups of screening members (2) are distributed at a 90-degree angle. A top cover (4) is fixedly connected to the top of the treatment box (21) at the top. A feed hopper (5) is connected through the top of the top cover (4). The gaps between the three diversion pipes (35) and the two connecting plates (33) on the same side of the outer circumferential surface of each treatment box (21) are connected, and the discharge frame (15) on the same side is connected.

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