A grinding device for producing calcium carbonate coarse sand

Abstract

This utility model discloses a grinding device for producing coarse calcium carbonate sand, relating to the field of grinding devices. The utility model includes a grinding device body, which includes a housing. A grinding assembly is installed inside the housing, comprising a filter layer and a rotating disc. A crushing mechanism is installed at the center of the rotating disc, and the crushing mechanism includes several mounting plates. This utility model, through the enclosed structure of the grinding device body and housing, isolates dust leakage and ensures operational safety. Simultaneously, the internal grinding assembly integrates the rotating disc's power carrier and the dynamic screening function of the filter layer, achieving continuous crushing and grading operations. Furthermore, the core crushing mechanism utilizes a ring-shaped arrangement of mounting plates and movable plates in a linked design. When the rotating disc rotates, centrifugal force forces the movable plates to swing, and the sharp conical crushing teeth on their impact surfaces directly penetrate the calcium carbonate raw material accumulated in the center, resolving material retention issues and improving grinding uniformity.

Description

Technical Field

[0001] This utility model relates to the field of grinding devices, specifically a grinding device for producing coarse calcium carbonate sand. Background Technology

[0002] The coarse powder grinding device is a high-efficiency and energy-saving crushing equipment, widely used in metallurgy, mining, chemical, cement, construction and refractory materials industries. It is used to process soft and hard ores with compressive strength ≤320MPa. The output particle size can be adjusted to 0-3mm. Its technical advantages include: high utilization rate of wear materials, 20-30% lower power consumption, pre-grinding function, and can meet the desulfurization requirements of power plants and the gradation requirements of building materials.

[0003] Currently, the coarse grinding of calcium carbonate requires the cooperation of a grinding blade and a filter layer to achieve the desired grinding effect. However, there is a problem in actual use: the effective grinding area of ​​the grinding blade and the filter layer is only the surface of the filter layer, while the calcium carbonate raw material in the center is difficult to grind effectively. In view of this, the inventors urgently need to design a mechanism to reduce the amount of raw material remaining in the central area, thereby improving the convenience and efficiency of grinding calcium carbonate raw materials. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a grinding device for the production of coarse calcium carbonate sand, so as to solve the technical problem of low grinding efficiency caused by the retention of raw materials in the central area during the coarse grinding process of calcium carbonate.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a grinding device for producing coarse calcium carbonate sand, comprising a grinding device body, the grinding device body including a device shell, a grinding assembly installed inside the device shell, the grinding assembly including a filter layer and a turntable, a crushing mechanism installed at the center of the turntable, the crushing mechanism including several mounting plates, a movable plate movably mounted on the mounting plates, the movable plate rotating with the turntable, applying centrifugal force to the calcium carbonate raw material at the center of the turntable.

[0006] By adopting the above technical solution, the airtightness and safety of the calcium carbonate coarse sand grinding process are ensured through the structural sealing of the grinding device body and the device shell, effectively preventing dust overflow and external pollution. The core design of the grinding component includes a filter layer and a rotating disc, forming an integrated function of layered crushing and screening: the rotating disc provides the rotational power carrier, while the filter layer simultaneously screens qualified particles during the grinding process, avoiding secondary rework.

[0007] Furthermore, the mounting plate has a first mounting groove, and the surface of the movable plate has a second mounting groove. The mounting plate is movably connected to the movable plate through the first mounting groove, the second mounting groove, and mounting bolts.

[0008] By adopting the above technical solution, an adjustable swing degree of freedom is provided for the movable plate: by adjusting the fastening position of the bolts in the groove, the swing amplitude of the movable plate can be controlled, thereby adapting to the impact requirements of calcium carbonate raw materials with different humidity or hardness.

[0009] Furthermore, the first and second mounting slots are straight slot structures, adapted to the installation position of the movable plate.

[0010] By adopting the above technical solution, the dynamic adaptability of the movable plate is further optimized. Its straight channel restricts the displacement direction of the movable plate under the action of centrifugal force, ensuring that its swing trajectory is always perpendicular to the impact surface of the raw material, thereby maximizing the crushing efficiency.

[0011] Furthermore, several of the mounting plates are arranged in an equidistant ring, and both the mounting plates and the movable plates are made of cemented carbide. Several grinding blades are detachably mounted on the outer periphery of the turntable.

[0012] By adopting the above technical solution, the centrifugal force generated by the movable plate evenly covers the central area of ​​the turntable, eliminating local blind spots and ensuring that the calcium carbonate raw material is impacted without dead angles. At the same time, the application of hard alloy material gives the mounting plate and movable plate excellent wear resistance and impact toughness, so that they are not easily deformed or cracked even after long-term grinding of high-hardness calcium carbonate coarse sand.

[0013] Furthermore, the impact surface between the movable plate and the calcium carbonate raw material is provided with a number of crushing teeth, which are in the form of sharp cones.

[0014] By adopting the above technical solution, the cone-shaped crushing teeth set on the impact surface of the movable plate concentrate the impact force in the micro-region of the tooth tip, forming local high pressure to penetrate the calcium carbonate raw material particles, and greatly improving the single crushing efficiency.

[0015] Furthermore, a feeding hopper is connected to the upper part of the device housing, and a discharging hopper is connected to the lower part of the device housing.

[0016] By adopting the above technical solution, the funnel-shaped design of the feeding hopper is sealed and connected to the top of the device shell, realizing the directional feeding and dustproof sealing of calcium carbonate raw materials, and eliminating dust pollution during the feeding process.

[0017] Furthermore, the device housing has an inspection port on the front side and an outer door that is sealed. A drive motor is installed on one side of the device housing, and the output end of the drive motor is connected to the turntable for transmission.

[0018] By adopting the above technical solutions, the inspection port and outer door on the front of the device casing simplify the accessibility of the equipment interior, allowing maintenance or replacement of the grinding components and crushing mechanism without disassembling the entire machine. At the same time, the direct drive mechanism between the drive motor and the turntable simplifies the power transmission path and reduces mechanical energy loss; the external motor layout avoids damage to the motor bearings caused by grinding vibration and has higher heat dissipation efficiency.

[0019] In summary, the present invention has the following main advantages:

[0020] This utility model uses a closed structure between the main body and the outer shell of the grinding device to prevent dust from overflowing and ensure operational safety. At the same time, the internal grinding components integrate the rotating power carrier and the dynamic screening function of the filter layer to achieve continuous crushing and grading. Meanwhile, the core crushing mechanism uses a linkage design of the ring-shaped mounting plate and the movable plate. When the rotating plate rotates, the centrifugal force forces the movable plate to swing. The sharp cone crushing teeth on the impact surface directly penetrate the calcium carbonate raw material accumulated in the center, which solves the problem of material retention and improves the uniformity of grinding.

[0021] This utility model uses a first mounting groove and a second mounting groove with a straight groove structure to install bolts, which supports flexible adjustment of the swing angle of the movable plate, adapts to different raw materials, and ensures structural stability under high-speed operation. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a side view of the structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the outer shell of the device of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the turntable of this utility model.

[0026] In the diagram: 1. Main body of the grinding device; 101. Device shell; 102. Outer door; 103. Feed hopper; 104. Discharge hopper; 2. Drive motor; 3. Grinding assembly; 301. Filter layer; 302. Turntable; 303. Grinding blade; 4. Crushing mechanism; 401. Mounting plate; 402. Movable plate; 403. First mounting slot; 404. Second mounting slot; 405. Mounting bolt; 406. Crushing teeth. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] A grinding device for producing coarse calcium carbonate sand, such as Figure 1-4 As shown, the device includes a grinding device body 1, which includes a device housing 101. A grinding assembly 3 is installed inside the device housing 101. The grinding assembly 3 includes a filter layer 301 and a rotating disk 302. A crushing mechanism 4 is installed at the center of the rotating disk 302. The crushing mechanism 4 includes several mounting plates 401, and movable plates 402 are movably mounted on the mounting plates 401. The movable plates 402 rotate with the rotating disk 302, applying centrifugal force to the calcium carbonate raw material at the center of the rotating disk 302. The airtight structure of the grinding device body 1 and the device housing 101 ensures the airtightness and safety of the calcium carbonate coarse sand grinding process, effectively blocking... To prevent dust spillage and external pollution, the core design of the grinding component 3 includes a filter layer 301 and a rotating disc 302, forming an integrated function of layered crushing and screening: the rotating disc 302 provides the rotational power carrier, while the filter layer 301 simultaneously screens qualified particles during the grinding process, avoiding secondary rework. Meanwhile, the innovation of the crushing mechanism 4 lies in the dynamic combination of the movable plate 402 and the mounting plate 401. Through the centrifugal force generated by the rotation of the rotating disc 302, the movable plate 402 is forced to apply a continuous impact force to the calcium carbonate raw material accumulated in the center, directly breaking down the material caking problem in the "central stagnation zone" in traditional grinding devices, and significantly improving the grinding uniformity.

[0029] See Figure 3 , Figure 4 The mounting plate 401 has a first mounting groove 403, and the surface of the movable plate 402 has a second mounting groove 404. The mounting plate 401 is movably connected to the movable plate 402 through the first mounting groove 403, the second mounting groove 404, and the mounting bolt 405, providing the movable plate 402 with an adjustable swing freedom: by adjusting the fastening position of the bolt in the groove, the swing amplitude of the movable plate 402 can be controlled, thereby adapting to the impact requirements of calcium carbonate raw materials with different humidity or hardness. At the same time, this connection method takes into account both high stability and easy maintenance. The straight groove structure ensures that the movable plate 402 swings only along the preset trajectory during high-speed rotation, avoiding skew and jamming. When replacement or maintenance is required, the movable plate 402 can be separated simply by removing the mounting bolt 405, greatly reducing the complexity of operation and maintenance.

[0030] See Figure 3 , Figure 4The first mounting groove 403 and the second mounting groove 404 are straight groove structures, which are adapted to the installation position of the movable plate 402, further optimizing the dynamic adaptability of the movable plate 402. The straight groove restricts the displacement direction of the movable plate 402 under the action of centrifugal force, ensuring that its swing trajectory is always perpendicular to the impact surface of the raw material, maximizing the crushing efficiency. At the same time, the straight groove structure has a higher tolerance for installation errors. Even under long-term vibration conditions, the linear contact between the bolt and the groove wall can still maintain a stable connection, avoiding mechanism failure caused by small deformation and extending the service life of key components.

[0031] See Figure 3 , Figure 4 Several mounting plates 401 are arranged in an equidistant ring. Both the mounting plates 401 and the movable plates 402 are made of cemented carbide. Several grinding blades 303 are detachably mounted on the outer periphery of the turntable 302, so that the centrifugal force generated by the movable plates 402 evenly covers the central area of ​​the turntable 302, eliminating local blind spots and ensuring that the calcium carbonate raw material is impacted without dead angles. At the same time, the application of cemented carbide gives the mounting plates 401 and the movable plates 402 excellent wear resistance and impact toughness. Even if high-hardness calcium carbonate coarse sand is ground for a long time, it is not easy to deform or crack. In addition, the detachable grinding blades 303 on the outer periphery of the turntable 302 realize modular operation and maintenance. A single blade can be replaced independently after it is worn, avoiding the high cost of replacing the whole blade. Moreover, the blade type can be flexibly adjusted according to the particle fineness requirements.

[0032] See Figure 3 , Figure 4 The impact surface of the movable plate 402 and the calcium carbonate raw material is provided with several crushing teeth 406. The crushing teeth 406 have a pointed cone structure. The pointed cone structure of the crushing teeth 406 on the impact surface of the movable plate 402 concentrates the impact force in the micro-region of the tooth tip, forming local high pressure to penetrate the calcium carbonate raw material particles, which greatly improves the single crushing efficiency. At the same time, the three-dimensional tooth shape of the pointed cone structure generates multi-directional shear force during movement, crushing large particles and maintaining continuous and efficient crushing performance. In addition, the stress guiding characteristics of the tooth tip can reduce the overall stress load on the movable plate 402, indirectly extending its service life.

[0033] See Figure 1 , Figure 2 , Figure 3The upper part of the device housing 101 is connected to the feeding hopper 103, and the lower part of the device housing 101 is connected to the discharging hopper 104. The funnel-shaped design of the feeding hopper 103 is sealed and connected to the top of the device housing 101, realizing the directional feeding of calcium carbonate raw materials and dust prevention and sealing, eliminating dust pollution during the feeding process. At the same time, the discharging hopper 104 is located at the bottom of the device and forms a graded discharge channel through vertical cooperation with the filter layer 301: qualified particles crushed and sieved by the grinding blade 303 fall directly into the discharging hopper 104 for discharge, while unqualified coarse particles remain on the surface of the turntable 302 for cyclic grinding, forming a continuous production closed loop. This structure significantly optimizes the material flow efficiency and avoids manual sorting intervention.

[0034] See Figure 1 , Figure 2 , Figure 3 The device housing 101 has an inspection port on the front and an outer door 102 that is sealed. A drive motor 2 is installed on one side of the device housing 101, and the output end of the drive motor 2 is connected to the turntable 302. The inspection port and outer door 102 on the front of the device housing 101 simplify the accessibility of the equipment, allowing maintenance or replacement of the grinding components 3 and crushing mechanism 4 without disassembling the whole machine. At the same time, the direct drive mechanism between the drive motor 2 and the turntable 302 simplifies the power transmission path and reduces mechanical energy loss. The external motor layout avoids damage to the motor bearings caused by grinding vibration and has higher heat dissipation efficiency. In addition, the sealing structure of the outer door 102 maintains a negative pressure environment in the grinding chamber when closed, ensuring operational safety.

[0035] The implementation principle of this embodiment is as follows: during the feeding stage, the calcium carbonate raw material enters the interior of the outer shell 101 of the device through the feeding hopper 103 above the main body 1 of the grinding device and falls onto the turntable 302 in the central area.

[0036] Centrifugal crushing stage: The drive motor 2 drives the turntable 302 to rotate, and the crushing mechanism 4 installed in the center of it operates synchronously. The mounting plates 401 arranged in a ring are movably connected to the movable plate 402 through the first mounting groove 403 and the second mounting groove 404. When rotating, the movable plate 402 swings outward under the action of centrifugal force, and the crushing teeth 406 on its surface continuously hit the calcium carbonate raw material in the central area, forcing the material to diffuse outward.

[0037] In the grading and grinding stage, the calcium carbonate raw material under centrifugal force is pushed to the edge of the turntable 302 and crushed and ground by the detachable grinding blades 303 on the outer periphery. Qualified particles fall after being screened by the filter layer 301 and are finally discharged from the feed hopper 104. Unqualified coarse particles remain on the surface of the turntable 302 and continue to be circulated and ground.

[0038] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A grinding device for producing coarse calcium carbonate sand, characterized in that: The device includes a grinding device body (1), which includes a device shell (101). A grinding assembly (3) is installed inside the device shell (101). The grinding assembly (3) includes a filter layer (301) and a turntable (302). A crushing mechanism (4) is installed at the center of the turntable (302). The crushing mechanism (4) includes several mounting plates (401). A movable plate (402) is movably mounted on the mounting plate (401). The movable plate (402) rotates with the turntable (302) and applies centrifugal force to the calcium carbonate raw material at the center of the turntable (302).

2. The grinding apparatus for producing coarse calcium carbonate sand according to claim 1, characterized in that: The mounting plate (401) has a first mounting groove (403), and the surface of the movable plate (402) has a second mounting groove (404). The mounting plate (401) is movably connected to the movable plate (402) through the first mounting groove (403), the second mounting groove (404), and the mounting bolt (405).

3. The grinding apparatus for producing coarse calcium carbonate sand according to claim 2, characterized in that: The first mounting slot (403) and the second mounting slot (404) are straight slot structures, which are adapted to the installation position of the movable plate (402).

4. The grinding apparatus for producing coarse calcium carbonate sand according to claim 1, characterized in that: Several mounting plates (401) are arranged in an equidistant ring. Both the mounting plates (401) and the movable plates (402) are made of hard alloy. Several grinding blades (303) are detachably installed on the outer periphery of the turntable (302).

5. The grinding apparatus for producing coarse calcium carbonate sand according to claim 1, characterized in that: The impact surface of the movable plate (402) and the calcium carbonate raw material is provided with a number of breaking teeth (406), and the breaking teeth (406) are in the form of a pointed cone structure.

6. The grinding apparatus for producing coarse calcium carbonate sand according to claim 1, characterized in that: A feeding hopper (103) is connected to the upper part of the device housing (101), and a discharging hopper (104) is connected to the lower part of the device housing (101).

7. The grinding apparatus for producing coarse calcium carbonate sand according to claim 1, characterized in that: The device housing (101) has an inspection port on the front side and an outer door (102) is sealed. A drive motor (2) is installed on one side of the device housing (101), and the output end of the drive motor (2) is connected to the turntable (302) for transmission.

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