A high-efficiency grinding device for corundum ceramic powder

Abstract

The present invention relates to the technical field of grinding equipment, specifically a high-efficiency grinding device for corundum ceramic powder, comprising a shell, a vertical lifting mechanism, a grinding mechanism, a rotary drive mechanism, a grinding disc, a filter, a tray and a controller; a feeding port is provided on the shell, a hopper for loading materials is obliquely installed in the feeding port, the grinding mechanism is installed in the middle of the inner side of the shell through the vertical lifting mechanism, the grinding disc is installed in the shell directly below the grinding mechanism through the rotary drive mechanism, the filter is coiled on the outer ring of the grinding disc, the tray is horizontally mounted in the shell and is located directly below the rotary drive mechanism, the controller is installed on the shell and is electrically connected to the vertical lifting mechanism, the grinding mechanism and the rotary drive mechanism. The present invention is used for grinding corundum ceramics, has high grinding efficiency, and after grinding, the corundum ceramic powder can be graded and screened, effectively avoiding the mixing of large particles of corundum ceramic powder, and further improving the grinding effect of the corundum ceramic powder.

Description

Technical Field

[0001] The invention relates to the technical field of grinding equipment, and in particular to a high-efficiency grinding device for corundum ceramic powder. Background Art

[0002] Corundum, whose name originated from India, is a mineralogical name. Corundum is mainly used as a high-grade grinding material, bearing material for watches and precision machinery.

[0003] Chinese Patent: CN214346880U A high-efficiency grinding device for corundum ceramic powder includes a rotating motor and a housing. The rotating motor is installed on the outer wall of the upper end of the housing. A feed hopper is fixed on the housing on the right side of the rotating motor, and a base is provided directly below the housing.

[0004] The above-mentioned grinding device has the following shortcomings: a. The above-mentioned grinding device mainly adopts the combination of grinding disk and pressure roller for grinding. During the grinding process, since the pressure roller is cylindrical and its surface is relatively smooth, the pressure roller cannot press the corundum ceramic on the grinding disk well, which results in low grinding efficiency during actual operation; b. The above-mentioned grinding device cannot achieve graded screening and can only screen corundum ceramic powder of one specification. It cannot perform graded recycling of corundum ceramic powder of different particle sizes. Summary of the Invention

[0005] The invention provides a high-efficiency grinding device for corundum ceramic powder, so as to solve the technical problem of low grinding efficiency of existing grinding devices.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] The present invention provides a high-efficiency grinding device for corundum ceramic powder, comprising a housing, a vertical lifting mechanism, a grinding mechanism, a rotary drive mechanism, a grinding disc, a filter screen and a tray;

[0008] A feeding port is provided on the outer shell, and a hopper for loading is obliquely installed in the feeding port. The grinding mechanism is installed in the middle of the inner side of the outer shell through a vertical lifting mechanism. The grinding disc is installed directly below the grinding mechanism in the outer shell through a rotary drive mechanism. The filter screen is coiled on the outer ring of the grinding disc and is used to filter the corundum ceramic powder in the grinding disc. The tray is horizontally mounted in the outer shell and is located directly below the rotary drive mechanism.

[0009] Furthermore, the grinding mechanism includes a circular plate, a plurality of supports and a plurality of rollers;

[0010] A plurality of supports are arranged in a circular array on the bottom surface of the circular plate around the central axis of the circular plate, a plurality of rollers are rotatably connected to the plurality of supports, and a plurality of scraping parts protruding outward are formed on the outer rings of the plurality of rollers.

[0011] Furthermore, the grinding mechanism further comprises a plurality of movable parts;

[0012] The vertical cross-sections of the multiple rollers are annular, and the outer rings of the multiple rollers are each provided with multiple stepped circular holes, each of the multiple stepped circular holes including an inner hole and an outer hole located inside and outside the rollers, respectively, with the inner hole having a smaller diameter than the outer hole; the multiple movable parts are respectively installed on the inner sides of the multiple stepped circular holes;

[0013] The movable part includes a limit block installed in the inner hole and a pressure block installed and slidably connected in the outer hole. The pressure block is fixedly installed on the limit block. The pressure block is cylindrical, and the outer ring abuts against the inner wall of the outer hole. The outer side surface of the pressure block conforms to the outer side surface of the corresponding roller shaft.

[0014] Furthermore, the grinding mechanism further includes a movable part driving assembly;

[0015] The movable part driving assembly includes a lower sealing cover, an upper sealing cover, an electric push rod, a piston and multiple sealed bearings; the lower sealing cover is fixedly installed in the middle of the bottom surface of the circular plate, and the multiple rollers on the side close to the middle of the circular plate are rotatably connected to the inner side of the lower sealing cover through multiple sealed bearings, the upper sealing cover is installed in the middle of the top surface of the circular plate, and the upper sealing cover and the lower sealing cover are interconnected, and the piston is slidably connected to the inner side of the upper sealing cover; the top of the electric push rod is fixed on the inner top surface of the upper sealing cover, and the bottom is fixed on the top surface of the piston.

[0016] Furthermore, the grinding mechanism also includes a plurality of roller drive assemblies; the plurality of roller drive assemblies are all mounted on the circular plate and are used to drive the plurality of rollers to rotate respectively.

[0017] Furthermore, the grinding mechanism further comprises a plurality of arc-shaped grinding blocks and a plurality of sets of elastic telescopic connecting members;

[0018] The plurality of arc-shaped grinding blocks are respectively and vertically elastically connected above the plurality of roller shafts through a plurality of groups of elastic telescopic connecting members.

[0019] Furthermore, the rotation drive mechanism includes:

[0020] A support rod is laterally connected to the housing and is located below the grinding disc;

[0021] The grinding disc rotating assembly is installed on the support rod and is connected to the grinding disc driving device to drive the grinding disc to rotate.

[0022] Furthermore, the grinding device further comprises a movable screening mechanism, and the movable screening mechanism comprises:

[0023] Two sliding assemblies are symmetrically mounted on the left and right inner sides of the housing;

[0024] The connecting frame, with its left and right sides respectively fixedly mounted on the sliding parts of the two sliding assemblies;

[0025] The screen is fixed on the inner wall of the connecting frame and is located directly above the tray. The middle part of the screen hangs down, and the size of the sieve holes on the screen gradually increases from the edge to the middle of the screen. Multiple annular protrusions are formed on the top surface of the tray from the middle to the edge.

[0026] Furthermore, the movable screening mechanism also includes an annular material guide plate, which is obliquely installed on the inner wall of the shell and is located directly above the two sliding components to prevent the corundum ceramic powder from falling onto the two sliding components or the connecting frame.

[0027] Furthermore, the grinding device also includes a controller, which is installed on the housing and is electrically connected to the vertical lifting mechanism, the grinding mechanism, and the rotary drive mechanism respectively.

[0028] Beneficial effects of the present invention:

[0029] 1. Compared with the pressing roller in the existing corundum ceramic powder grinding device, during the grinding process, since the pressing roller is cylindrical and its surface is relatively smooth, the pressing roller cannot press the corundum ceramic on the grinding disc well, resulting in low grinding efficiency during actual operation;

[0030] The biggest advantage of the grinding mechanism in the present invention over the existing corundum ceramic powder grinding device is that when the multiple rollers in the present invention squeeze the corundum ceramic in a rolling form, the corundum ceramic pushes the movable part, so that part or all of the corundum ceramic and the movable part slide into the corresponding stepped circular hole together. The corresponding stepped circular hole captures the corundum ceramic and grinds it using the rotating grinding disc. The relative sliding between the corundum ceramic and the multiple rollers is reduced, thereby improving the grinding efficiency.

[0031] At the same time, a movable part driving assembly can be added, which can drive multiple movable parts to slide back and forth in multiple stepped circular holes. The multiple movable parts can crush the corundum ceramics when grabbing them, which can further improve the grinding efficiency of the corundum ceramics.

[0032] 2. Traditional screens are generally of the same specification and cannot achieve graded screening. The size of the screen holes on the screen in the present invention gradually increases from the edge to the middle of the screen, and the middle of the screen droops downward. A plurality of annular protrusions are formed on the top surface of the tray from the middle to the edge, and a storage space for corundum ceramic powder of different specifications is formed between the plurality of annular protrusions. This structure can achieve graded screening of corundum ceramic powder. The corundum ceramic powder after graded screening by the screen can fall into the storage space corresponding to the tray. After multi-stage screening, the unqualified corundum ceramic powder can be ground again, and different grinding rework times and different grinding intensities can be arranged according to the specifications of the unqualified corundum ceramic powder, thereby reducing the grinding rework time of the corundum ceramic powder and being more energy-efficient than traditional equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of a three-dimensional structure of the present invention;

[0034] Figure 2 for Figure 1 A partial enlarged schematic diagram of part A in the middle;

[0035] Figure 3 It is an enlarged diagram of the three-dimensional structural schematic diagram of the grinding mechanism;

[0036] Figure 4 for Figure 3 A partial enlarged schematic diagram of part B in the middle;

[0037] Figure 5 is an enlarged schematic diagram of a bottom view of the grinding mechanism;

[0038] Figure 6 for Figure 5 An enlarged view of the cross-sectional view in the CC direction;

[0039] Figure 7 Schematic diagram of the structure of the movable part driving assembly in the present invention;

[0040] Figure 8 It is an enlarged view of the structural schematic diagram of the grinding disc.

[0041] Description of reference numerals:

[0042] 1. Shell; 11. Feeding port; 12. Hopper;

[0043] 2. Vertical lifting mechanism;

[0044] 3. Grinding mechanism; 31. Circular plate; 32. Support; 33. Roller; 331. Scraper; 332. Stepped circular hole; 34. Movable part; 341. Limit block; 342. Press block; 35. Movable part drive assembly; 351. Lower sealing cover; 352. Upper sealing cover; 353. Electric push rod; 354. Piston;

[0045] 4. Rotation drive mechanism;

[0046] 5. Grinding disc;

[0047] 6. Movable screening mechanism; 61. Sliding assembly; 62. Connecting frame; 63. Screen. DETAILED DESCRIPTION

[0048] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in many other forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0049] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0050] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0053] It should also be noted that, in the embodiments of the present application, the same figure mark represents the same component or the same part. For the same parts in the embodiments of the present application, the figure may only mark one of the parts or components as an example. It should be understood that the figure mark also applies to other identical parts or components.

[0054] Reference Figure 1 、 Figure 2 and Figure 8 , the embodiment of the present application provides a high-efficiency grinding device for corundum ceramic powder, including a housing 1, a vertical lifting mechanism 2, a grinding mechanism 3, a rotary drive mechanism 4, a grinding disc 5, a filter screen and a tray;

[0055] The outer shell 1 is provided with a feeding port 11, and a feeding hopper 12 for feeding is installed obliquely in the feeding port 11. The grinding mechanism 3 is installed in the middle of the inner side of the outer shell 1 through the vertical lifting mechanism 2, and the grinding disc 5 is installed in the outer shell 1 directly below the grinding mechanism 3 through the rotary drive mechanism 4; the tray is horizontally mounted in the outer shell 1 and is located directly below the rotary drive mechanism 4.

[0056] The outer ring of the grinding disc 5 can be provided with a circle of inclined enclosure to prevent the corundum ceramic powder from falling directly into the tray below without being filtered, which increases the grinding rework time. At the same time, multiple through holes are opened on the enclosure of the grinding disc 5, and the filter screen is bonded to the inner wall of the enclosure of the grinding disc 5;

[0057] Alternatively, the material of the filter can be changed to a hard material, such as a high-strength, rust-resistant metal. The above design can prevent the filter from being squeezed and deformed during the grinding of the corundum ceramic, thereby preventing the filter from being damaged.

[0058] Reference Figures 3 to 5 In some embodiments, the grinding mechanism 3 includes a circular plate 31, multiple supports 32, and multiple rollers 33. The multiple supports 32 are arranged in a circular array on the bottom surface of the circular plate 31 around the central axis of the circular plate 31. The multiple rollers 33 are rotatably connected to the multiple supports 32. The outer rings of the multiple rollers 33 are each formed with multiple scraping portions 331 protruding outward. During use, the multiple rollers 33 compress the corundum ceramic by rolling, crushing the corundum ceramic. Simultaneously, the multiple scraping portions 331 on the multiple rollers 33 can loosen the corundum ceramic powder adhered to the inner bottom surface of the grinding disc 5, thereby improving the grinding and screening efficiency of the corundum ceramic powder.

[0059] Reference Figures 4 to 6In some embodiments, the grinding mechanism 3 further includes a plurality of movable members 34; the vertical cross-sections of the plurality of rollers 33 are annular, and the outer rings of the plurality of rollers 33 are each provided with a plurality of stepped circular holes 332, each of the plurality of stepped circular holes 332 including an inner hole and an outer hole located inside and outside the roller 33, respectively, and the diameter of the inner hole is smaller than that of the outer hole; the plurality of movable members 34 are respectively installed on the inner sides of the plurality of stepped circular holes 332;

[0060] The movable part 34 includes a limit block 341 installed in the inner hole and a pressure block 342 installed and slidably connected in the outer hole. The pressure block 342 is fixedly installed on the limit block 341; the pressure block 342 is cylindrical, and the outer ring abuts against the inner wall of the outer hole. The outer side surface of the pressure block 342 conforms to the outer side surface of the corresponding roller shaft 33.

[0061] Compared with the pressure roller in the existing corundum ceramic powder grinding device, during the grinding process, due to the relatively smooth surface of the pressure roller, the corundum ceramic and the pressure roller will produce relative movement, that is, the role of the pressure roller is limited to blocking the corundum ceramic and pressing it locally, and this grinding method is inefficient; the biggest advantage of the grinding mechanism 3 in the present invention and the existing corundum ceramic powder grinding device is that when the multiple rollers 33 in the present invention squeeze the corundum ceramic in a rolling form, the corundum ceramic pushes the movable part 34, so that part or all of the corundum ceramic and the movable part 34 slide into the corresponding stepped circular hole 332 together, and the corresponding stepped circular hole 332 captures the corundum ceramic and grinds it using the rotating grinding disc 5. The relative sliding between the corundum ceramic and the multiple rollers 33 is less, thereby improving the grinding efficiency.

[0062] Reference Figure 3 and Figure 7 , in some embodiments, the grinding mechanism 3 further includes a movable part driving assembly 35;

[0063] The movable part driving assembly 35 includes a lower sealing cover 351, an upper sealing cover 352, an electric push rod 353, a piston 354 and multiple sealed bearings; the lower sealing cover 351 is fixedly installed in the middle of the bottom surface of the circular plate 31, and the multiple rollers 33 are rotatably connected to the inner side of the lower sealing cover 351 on one side close to the middle of the circular plate 31 through multiple sealed bearings, the upper sealing cover 352 is installed in the middle of the top surface of the circular plate 31, and the upper sealing cover 352 and the lower sealing cover 351 are communicated with each other, and the piston 354 is slidably connected to the inner side of the upper sealing cover 352; the top of the electric push rod 353 is fixed on the inner top surface of the upper sealing cover 352, and the bottom is fixed on the top surface of the piston 354.

[0064] When in use, the electric push rod 353 is started, and the electric push rod 353 pushes the piston 354 downward to slide downward. The air below the piston 354 in the upper sealing cover 352 enters the lower sealing cover 351, and the air in the lower sealing cover 351 then enters the inner side of the multiple roller shafts 33. The air inside the roller shaft 33 enters the stepped circular hole 332 through the gap between the limit block 341 and the corresponding inner wall of the stepped circular hole 332, and pushes the pressure block 342 to slide outward until the outer side surface of the pressure block 342 is flush with the outer side surface of the roller shaft 33. At this time, the limit block 341 can limit the pressure block 342 from sliding out further; when it is necessary to make the pressure block 342 slide toward the inner side of the stepped circular hole 332, use the electric push rod 353 to pull the piston 354 upward to achieve this, which will not be described in detail below.

[0065] The movable member driving assembly 35 can drive the multiple movable members 34 to slide back and forth in the multiple stepped circular holes 332 respectively. The multiple movable members 34 can crush the corundum ceramic when grasping the corundum ceramic, which can further improve the grinding efficiency of the corundum ceramic.

[0066] In the above embodiment, the grinding mechanism 3 also includes a pressure sensor with an alarm function. The pressure sensor is installed on the inner top surface of the upper sealing cover 352, and the top of the electric push rod 353 is fixedly connected to the pressure sensor. The pressure sensor can be used to monitor in real time the force of the electric push rod 353 pushing the piston 354, that is, when the corundum ceramic powder in the grinding disk 5 is ground to a certain extent, multiple movable parts 34 will be able to slide out more smoothly from the corresponding stepped circular holes 332, so at this moment the force of the electric push rod 353 pushing the piston 354 will become smaller, so by monitoring the force of the electric push rod 353 pushing the piston 354 through the pressure sensor, the crushing condition of the corundum ceramic powder in the grinding disk 5 can be indirectly monitored, and there is no need to arrange special personnel to monitor the crushing condition of the corundum ceramic powder, and the equipment has a higher degree of automation.

[0067] In some embodiments, the grinding mechanism 3 also includes multiple roller drive assemblies; the multiple roller drive assemblies are all installed on the circular plate 31, and are used to drive the multiple rollers 33 to rotate respectively. During use, the multiple roller drive assemblies respectively drive the multiple rollers 33 to rotate, and grind the corundum ceramics on the inner bottom surface of the grinding disk 5. At the same time, the scraping parts 331 on the multiple rollers 33 can also be adjusted to the bottom of the rollers 33 through the multiple roller drive assemblies, so that the scraping parts 331 are in contact with the inner bottom surface of the grinding disk 5, thereby better and faster scraping loose the corundum ceramic powder adhered to the inner bottom surface of the grinding disk 5, thereby improving the grinding and screening efficiency of the corundum ceramic powder.

[0068] In some embodiments, the grinding mechanism 3 also includes multiple arc-shaped grinding blocks and multiple groups of elastic telescopic connecting members; the multiple arc-shaped grinding blocks are vertically elastically connected above the multiple rollers 33 through multiple groups of elastic telescopic connecting members. During use, the multiple arc-shaped grinding blocks grind the corundum ceramic powder on the side of the roller 33 under the action of the multiple groups of elastic telescopic connecting members, which can further improve the grinding efficiency of the corundum ceramic powder.

[0069] In some embodiments, the rotation drive mechanism 4 includes:

[0070] A support rod is laterally connected to the housing 1 and is located below the grinding disc 5;

[0071] The grinding disc rotating assembly is mounted on the support rod and is drivingly connected to the grinding disc 5 to drive the grinding disc 5 to rotate.

[0072] In some embodiments, the grinding device further comprises a movable screening mechanism 6, wherein the movable screening mechanism 6 comprises:

[0073] Two sliding assemblies 61 are symmetrically mounted on the left and right inner sides of the housing 1;

[0074] The connecting frame 62 is fixedly mounted on the sliding parts of the two sliding components 61 on the left and right sides respectively;

[0075] The screen 63 is fixed on the inner wall of the connecting frame 62 and is located directly above the tray. The middle part of the screen 63 hangs downward, and the size of the sieve holes on the screen 63 gradually increases from the edge to the middle of the screen 63. A plurality of annular protrusions are formed on the top surface of the tray from the middle to the edge. This structure can realize the graded screening of corundum ceramic powder. During use, the two sliding components 61 can also be started. The two sliding components 61 drive the screen 63 to reciprocate in the vertical direction. During the movement of the screen 63, the screening efficiency of the screen 63 can be improved.

[0076] In some embodiments, the movable screening mechanism 6 also includes an annular material guide plate, which is obliquely installed on the inner wall of the outer shell 1 and is located directly above the two sliding components 61 to prevent the corundum ceramic powder from falling on the two sliding components 61 or the connecting frame 62.

[0077] In some embodiments, the grinding device further includes a controller mounted on the housing 1 and electrically connected to the vertical lifting mechanism 2, the grinding mechanism 3, and the rotary drive mechanism 4. The controller can automatically control the vertical lifting mechanism 2, the grinding mechanism 3, and the rotary drive mechanism 4, thereby improving the automation level of the equipment and reducing the labor intensity of the operator.

[0078] The working process of the present invention is:

[0079] First, the corundum ceramics to be ground are put into the grinding disc 5 through the hopper 12, and then the grinding mechanism 3 and the rotary drive mechanism 4 are started. The multiple roller drive assemblies on the grinding mechanism 3 respectively drive the multiple rollers 33 to rotate synchronously, and the rotary drive mechanism 4 drives the grinding disc 5 to rotate, and the movable part drive assembly 35 is started. The movable part drive assembly 35 drives the multiple movable parts 34 to reciprocate in the corresponding stepped circular holes 332. The stepped circular holes 332 on the outer rings of the multiple rollers 33 grab the corundum ceramics and use the rotating grinding state to grind the corundum ceramics. The grinding wheel 5 grinds the corundum ceramic. During this process, the multiple rollers 33 and multiple movable parts 34 crush the corundum ceramic to obtain corundum ceramic powder. Under the action of centrifugal force, the corundum ceramic powder is filtered through the filter and falls into the screen 63 in the movable screening mechanism 6. The screen 63 classifies the corundum ceramic powder and falls into the corresponding storage space of the tray. During the screening process, the sliding component 61 can also be activated to drive the screen 63 to move in the vertical direction to improve the screening efficiency. The above process is repeated to complete the efficient grinding of corundum ceramic.

[0080] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A high-efficiency grinding device for corundum ceramic powder, characterized in that: It comprises a housing (1), a vertical lifting mechanism (2), a grinding mechanism (3), a rotary drive mechanism (4), a grinding disc (5), a filter screen and a tray; The housing (1) is provided with a feeding port (11), a hopper (12) for feeding is obliquely installed in the feeding port (11), a grinding mechanism (3) is installed in the middle of the inner side of the housing (1) via a vertical lifting mechanism (2), a grinding disc (5) is installed in the housing (1) directly below the grinding mechanism (3) via a rotary drive mechanism (4), a filter screen is coiled on the outer ring of the grinding disc (5) for filtering the corundum ceramic powder in the grinding disc (5), and a tray is horizontally mounted in the housing (1) and located directly below the rotary drive mechanism (4); The grinding mechanism (3) comprises a circular plate (31), a plurality of supports (32) and a plurality of rollers (33); A plurality of supports (32) are arranged in a circular array around the central axis of the circular plate (31) on the bottom surface of the circular plate (31); a plurality of rollers (33) are rotatably connected to the plurality of supports (32) respectively; and a plurality of scraping portions (331) protruding outward are formed on the outer rings of the plurality of rollers (33); The grinding mechanism (3) further includes a plurality of movable parts (34); The vertical cross-sections of the plurality of roller shafts (33) are annular, and the outer rings of the plurality of roller shafts (33) are each provided with a plurality of stepped circular holes (332). The plurality of stepped circular holes (332) each include an inner hole and an outer hole located inside and outside the roller shaft (33), respectively, and the diameter of the inner hole is smaller than that of the outer hole. The plurality of movable members (34) are respectively installed on the inner sides of the plurality of stepped circular holes (332). The movable part (34) includes a limit block (341) installed in the inner hole and a pressure block (342) installed and slidably connected in the outer hole. The pressure block (342) is fixedly installed on the limit block (341); the pressure block (342) is cylindrical, and the outer ring abuts against the inner wall of the outer hole. The outer side surface of the pressure block (342) is conformed to the outer side surface of the corresponding roller shaft (33).

2. The high-efficiency grinding device for corundum ceramic powder according to claim 1, characterized in that: The grinding mechanism (3) further includes a movable member driving assembly (35); The movable part driving assembly (35) comprises a lower sealing cover (351), an upper sealing cover (352), an electric push rod (353), a piston (354) and a plurality of sealing bearings; the lower sealing cover (351) is fixedly mounted on the middle of the bottom surface of the circular plate (31); a plurality of rollers (33) are rotatably connected to the inner side of the lower sealing cover (351) on one side close to the middle of the circular plate (31) through a plurality of sealing bearings; the upper sealing cover (352) is mounted on the middle of the top surface of the circular plate (31), and the upper sealing cover (352) and the lower sealing cover (351) are in communication with each other; the piston (354) is slidably connected to the inner side of the upper sealing cover (352); the top of the electric push rod (353) is fixed on the inner top surface of the upper sealing cover (352), and the bottom is fixed on the top surface of the piston (354).

3. The high-efficiency grinding device for corundum ceramic powder according to claim 1, characterized in that: The grinding mechanism (3) further comprises a plurality of roller drive assemblies; the plurality of roller drive assemblies are all mounted on the circular plate (31) and are used to respectively drive the plurality of rollers (33) to rotate.

4. The high-efficiency grinding device for corundum ceramic powder according to any one of claims 1 to 3, characterized in that: The grinding mechanism (3) further comprises a plurality of arc-shaped grinding blocks and a plurality of sets of elastic telescopic connecting members; The plurality of arc-shaped grinding blocks are respectively and vertically elastically connected above the plurality of roller shafts (33) via a plurality of groups of elastic telescopic connecting members.

5. The high-efficiency grinding device for corundum ceramic powder according to claim 1, characterized in that: The rotary drive mechanism (4) comprises: a support rod, which is laterally connected to the housing (1) and is located below the grinding disc (5); The grinding disc rotating assembly is mounted on the support rod and is drivingly connected to the grinding disc (5) to drive the grinding disc (5) to rotate.

6. The high-efficiency grinding device for corundum ceramic powder according to claim 1, characterized in that: It also includes a movable screening mechanism (6), which includes: two sliding assemblies (61) symmetrically mounted on the left and right inner sides of the housing (1); A connecting frame (62), the left and right sides of which are respectively fixedly mounted on the sliding parts of the two sliding assemblies (61); The screen (63) is fixed on the inner wall of the connecting frame (62) and is located directly above the tray. The middle of the screen (63) hangs downward, and the size of the sieve holes on the screen (63) gradually increases from the edge to the middle of the screen (63). A plurality of annular protrusions are formed on the top surface of the tray from the middle to the edge.

7. The high-efficiency grinding device for corundum ceramic powder according to claim 6, characterized in that: The movable screening mechanism (6) further comprises an annular material guide plate, which is obliquely mounted on the inner wall of the housing (1) and is located directly above the two sliding assemblies (61) to prevent the corundum ceramic powder from falling onto the two sliding assemblies (61) or the connecting frame (62).

8. The high-efficiency grinding device for corundum ceramic powder according to any one of claims 1 to 3 and 5 to 7, characterized in that: It also includes a controller, which is mounted on the housing (1) and is electrically connected to the vertical lifting mechanism (2), the grinding mechanism (3), and the rotary drive mechanism (4).

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