Grinding device for preparing micro-nano reduced iron powder from high-purity iron oxide powder

Abstract

The invention discloses a grinding device for preparing micro-nano reduced iron powder from high-purity iron oxide powder, and relates to the technical field of iron oxide powder preparation. The grinding device for preparing the micro-nano reduced iron powder from the high-purity iron oxide powder comprises a base, a filtering assembly is arranged on the upper surface of the base, a grinding assembly is arranged at the top of the filtering assembly, a disassembling assembly is arranged at the top of the grinding assembly, and a cylinder is fixedly installed on the surface of the grinding assembly and located on the base. The grinding assembly comprises a vertical pipe in threaded connection with the top of the cylinder, and a grinding net is fixedly installed on the inner bottom wall of the vertical pipe. According to the grinding device, the arrangement of the grinding assembly is ensured, the grinding net can be cleaned while grinding is carried out in the using process, raw material residues and blockage can be effectively avoided in the grinding process, and the situation that normal grinding operation cannot be carried out after the grinding net is blocked is avoided, so that normal use of the grinding device is kept while the cleanliness of the grinding net is kept; and the use convenience of the grinding device is improved, and subsequent normal use is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of iron oxide powder preparation, in particular to a grinding device for preparing micro-nano-level reduced iron powder from high-purity iron oxide powder. Background Art

[0002] While there's no precise definition of the particle size range for ultrafine reduced iron powder in my country, it can be broadly categorized as micron, submicron, and nanometer. Powders with particle sizes greater than 1 μm are considered micron materials, those between 0.1 and 1 μm are submicron materials, and those between 0.001 and 0.1 μm (i.e., 1 to 100 nm) are called nanomaterials. Ultrafine reduced iron powder, with its unique small size effect, surface and interface effects, and quantum size effects, exhibits distinct properties distinct from those of its bulk (granular) form. It possesses special electrical, magnetic, optical, adsorption, and chemical properties, and is widely used in electromagnetics, defense, chemical engineering, machinery manufacturing, biology, medicine, optics, and environmental fields. The reduction method involves reducing finely ground iron oxides or iron salts obtained by liquid precipitation. Both methods are suitable for producing micro- and nanometer iron powders larger than 5 μm. However, the liquid precipitation method also suffers from the high cost of precursor preparation, requiring a grinding device to grind the raw materials before reducing the iron powder.

[0003] The existing patent, with publication number CN217747434U, discloses a high-qualification iron powder core grinding device, relating to the field of iron powder core processing equipment. It comprises a control base, an adjustment support assembly, and a grinding assembly. The control base has a control chamber disposed within it, housing a forward and reverse motor, with a control gear disc sleeved on the output end of the forward and reverse motor. The adjustment support assembly is disposed at the top of the control base and comprises two support plates, two adjustment mechanisms, and two clamping mechanisms. The adjustment mechanisms comprise an adjustment screw and a linkage gear disc, the outer walls of which mesh with the outer walls of the linkage gear disc, and the clamping mechanism comprises a movable slider and a clamping rod. The grinding assembly is disposed between the two support plates. This utility model utilizes the design of the push-adjustment support assembly, the adjustment screw, and the movable slider, enabling the movable slider to move vertically along the outer wall of the adjustment screw under the principle of a lead screw, thereby effectively adjusting the clamping height.

[0004] However, the grinding devices currently on the market can adjust the clamping height of the device during use, but in actual application, the grinding filter cannot be cleaned during grinding, which will cause raw material residue and blockage, thereby affecting the subsequent passability of the grinding device, and also affecting the fineness of the raw material after grinding, reducing the grinding quality of the iron powder. Summary of the Invention

[0005] The purpose of the present invention is to provide a grinding device for preparing micro-nano reduced iron powder from high-purity iron oxide powder, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a grinding device for preparing micro-nano-level reduced iron powder from high-purity iron oxide powder, comprising a base, a filter assembly is provided on the upper surface of the base, a grinding assembly is provided on the top of the filter assembly, and a splitting assembly is provided on the top of the grinding assembly.

[0007] The surface of the grinding assembly is fixedly mounted on a cylinder on the base.

[0008] The filter component set up can clean the inside of the inlet and outlet pipes of the ground raw materials during grinding, preventing the ground raw materials from falling directly into the container and causing dust splashing during use, reducing harm to workers, and also reducing the loss of iron powder, while also improving the grinding and filtering effect of the device.

[0009] The grinding assembly includes a vertical tube threadedly connected to the top of the cylinder, a grinding net is fixedly installed on the inner bottom wall of the vertical tube, a rotating rod is inserted into the grinding net, a motor is set on the top of the rotating rod, a grinding plate is fixedly installed on the surface of the rotating rod, a grinding sheet is fixedly installed on one side of the grinding plate, a cleaning plate is fixedly installed on the surface of the rotating rod and below the grinding net, a cleaning brush is inserted into the top of the cleaning plate, and the top of the cleaning brush fits with the lower surface of the grinding net. By setting up the grinding assembly, the grinding net can be cleaned while grinding during use, and raw material residue and blockage can be effectively avoided during the grinding process, and the grinding net can be prevented from being unable to grind normally after being blocked, thereby maintaining the cleanliness of the grinding net while maintaining the normal use of the grinding device, improving the convenience of use of the grinding device, and facilitating subsequent normal use.

[0010] Preferably, a scraper and a rubber sheet are fixedly installed on the surface of the rotating rod located inside the cylinder, the bottoms of the scraper and the rubber sheet are in contact with the inner bottom wall of the cylinder, the bottom of the cylinder is connected to a discharge pipe, the surface of the discharge pipe is connected to a valve, and the bottom of the discharge pipe passes through the base and extends to the outside of the base.

[0011] The scraper and rubber sheet are provided to facilitate scraping and cleaning of iron powder during use, which is convenient for subsequent use and also maintains the cleanliness of the cylinder.

[0012] Preferably, support components are provided on both sides of the bottom of the base, and the support components include horizontal plates fixedly installed on both sides of the bottom of the base, and screw tubes are fixedly installed on both sides of the bottom of the horizontal plates. The bottom of the screw tubes is threadedly connected to a screw rod, and a support block is fixedly installed at the bottom of the screw rod, and an arc groove is provided on the surface of the support block.

[0013] By setting up the support assembly, the support height of the four corners of the bottom of the base can be easily adjusted during use, so that it is convenient to install and position it on different terrains during use, and it is also convenient to maintain the placement stability of the device during use.

[0014] Preferably, an air pump is fixedly installed on one side of the upper surface of the base, the air outlet of the air pump is connected to an air outlet pipe, one end of the air outlet pipe is connected to one side of the vertical pipe, one side of the vertical pipe is connected to a connecting head, one end of the air outlet pipe is rotatably connected to a hexagonal nut through a sealed bearing, and the hexagonal nut is threadedly connected to the surface of the connecting head.

[0015] By means of the provided air pump, the interior of the vertical pipe can be pressurized during use, thereby facilitating subsequent extrusion operations, which in turn facilitates subsequent grinding operations.

[0016] Preferably, one side of the vertical pipe is connected to a feed pipe, one end of the feed pipe is connected to a feed hopper, and the feed hopper and the feed pipe are connected through a control valve.

[0017] The feed pipe is provided, which facilitates feed control during use and also facilitates subsequent connection operations.

[0018] Preferably, the splitting component includes positioning vertical plates fixedly installed on both sides of the top of the vertical tube, the tops of the two positioning vertical plates are fixedly connected by a connecting plate, a threaded rod is inserted into the connecting plate, the bottom of the threaded rod is rotatably connected to a pressure plate through a bearing, a screw rod is inserted into the pressure plate, and a receiving plate is installed at the bottom of the screw rod, the motor is located above the receiving plate, and the output shaft of the motor passes through the receiving plate and extends to the outside of the receiving plate.

[0019] By setting up the split assembly, it is convenient to separate the motor and the rotating rod during use, thereby facilitating the inspection and replacement of components on the motor or the rotating rod, avoiding the inability to inspect and replace components after long-term use, improving the convenience of use of the device, and also facilitating subsequent assembly operations.

[0020] Preferably, the output shaft of the motor is fixedly installed with a hexagonal rod through a coupling, the bottom of the hexagonal rod is inserted into the top of the rotating rod, the top of the rotating rod is provided with a hexagonal hole for the hexagonal rod to be inserted, a circular hole for the output shaft of the power supply motor to pass through is provided on the receiving plate, a rod hole for the rotating rod to pass through is provided on the top of the vertical tube, and the inner wall of the rod hole is rotatably connected to the surface of the rotating rod.

[0021] The hexagonal rod is conveniently connected to the top of the rotating rod during use, thereby facilitating subsequent disassembly and assembly operations. At the same time, the rod hole is set to facilitate the passage of the rotating rod, thereby facilitating subsequent use.

[0022] Preferably, the pressure plate is provided with a through hole for the screw rod to pass through, and the inner wall of the through hole is slidably connected to the surface of the screw rod, the surface of the screw rod is threadedly connected with a nut, and the surface of the screw rod is also provided with an anti-slip ring, the bottom of the anti-slip ring contacts the top of the pressure plate, the bottom of the nut contacts the top of the anti-slip ring, the bottom of the pressure plate fits with the top of the motor, and the bottom of the motor contacts the upper surface of the receiving plate.

[0023] The anti-slip ring is provided to facilitate the anti-loosening operation of the nut during use, thereby improving the tightening firmness of the nut.

[0024] Preferably, a threaded hole for the threaded rod to pass through is provided on the connecting plate, the threaded hole is threadedly connected to the threaded rod, and a rotating block is fixedly installed on the top of the threaded rod, and a hexagonal hole is provided on the top of the rotating block.

[0025] The provided threaded holes and threaded rods make it easy to tighten and loosen the threaded rods during use, making subsequent use easier.

[0026] Preferably, a cleaning hole is provided on the upper surface of the cleaning plate, an extrusion spring is fixedly installed on the inner bottom wall of the cleaning hole, a movable plate is fixedly installed on the top of the extrusion spring, the top of the movable plate is fixedly connected to the bottom of the cleaning brush, and the surface of the movable plate is slidingly connected to the inner wall of the cleaning hole, the movable plate is adapted to the cleaning hole, a rotating hole for the rotating rod to pass through is provided on the grinding net, and the inner wall of the rotating hole is rotatably connected to the surface of the rotating rod.

[0027] By providing an extrusion spring, the cleaning brush on the movable plate can be easily reset during use, thereby facilitating the cleaning brush and the grinding net to fit together for cleaning, which is convenient for subsequent use.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] (1) The grinding device for preparing micro-nano reduced iron powder with high-purity iron oxide powder is provided with a grinding assembly. During use, the grinding net can be cleaned while grinding. During the grinding process, raw material residue and blockage can be effectively avoided, and the grinding net can be prevented from being blocked and unable to grind normally. Thus, the cleanliness of the grinding net is maintained while the normal use of the grinding device is maintained, the convenience of use of the grinding device is improved, and the subsequent normal use is convenient.

[0030] (2) The device for grinding micro-nano reduced iron powder prepared from high-purity iron oxide powder can clean the inside of the inlet and outlet pipes of the ground raw materials through the provided filtering component during grinding. During use, the ground raw materials are prevented from falling directly into the interior of the container to cause dust splashing, thereby reducing harm to the staff and reducing the loss of iron powder. At the same time, the grinding and filtering effect of the device is also improved.

[0031] (3) The micro-nanoscale reduced iron powder grinding device for preparing high-purity iron oxide powder is convenient for separating the motor and the rotating rod during use by setting up a split assembly, thereby facilitating the maintenance and replacement of components on the motor or the rotating rod, avoiding the inability to maintain and replace components after long-term use, improving the convenience of use of the device, and also facilitating subsequent assembly operations.

[0032] (4) The micro-nanoscale reduced iron powder grinding device for preparing high-purity iron oxide powder can conveniently adjust the support height of the four corners of the bottom of the base during use through the support assembly, thereby facilitating its installation and positioning on different terrains during use, and also facilitating the placement stability of the device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of a three-dimensional cross-sectional structure of the present invention from a first viewing angle;

[0034] Figure 2 This is a schematic diagram of a three-dimensional cross-sectional structure of the present invention from a second viewing angle;

[0035] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle;

[0036] Figure 4 is a schematic diagram of the third perspective structure of the present invention;

[0037] Figure 5 For the present invention Figure 1 A schematic diagram of the structure at center A;

[0038] Figure 6 For the present invention Figure 2 A magnified schematic diagram of the structure at point B in the middle;

[0039] Figure 7 For the present invention Figure 3 A magnified schematic diagram of the structure at point C in the middle;

[0040] Figure 8 For the present invention Figure 3 A magnified schematic diagram of the structure at D in the middle;

[0041] Figure 9 For the present invention Figure 3 Enlarged schematic diagram of the structure at E in the middle.

[0042] In the figure: 1. Base; 2. Filter assembly; 200. Cylinder; 201. Scraper; 202. Rubber sheet; 203. Discharge pipe; 204. Valve; 3. Grinding assembly; 300. Vertical pipe; 301. Grinding mesh; 302. Rotating rod; 303. Motor; 304. Grinding plate; 305. Grinding sheet; 306. Cleaning plate; 307. Cleaning brush; 308. Feed pipe; 309. Feed hopper; 310. Control valve; 311. Extrusion spring; 312. Moving plate; 4. Split assembly; 400. Positioning vertical plate; 401. Connecting plate; 402. Threaded rod; 403. Pressing plate; 404. Screw; 405. Attaching plate; 406. Hexagonal rod; 407. Anti-slip ring; 408. Nut; 409. Rotating block; 5. Support assembly; 500. Horizontal plate; 501. Screw tube; 502. Screw; 503. Support block; 6. Air pump; 7. Exhaust pipe; 8. Connector; 9. Hexagonal nut. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] See also Figures 1-9 The present invention provides a technical solution: a grinding device for preparing micro-nano-level reduced iron powder from high-purity iron oxide powder, comprising a base 1, a filter component 2 is provided on the upper surface of the base 1, a grinding component 3 is provided on the top of the filter component 2, and a splitting component 4 is provided on the top of the grinding component 3.

[0045] The surface of the grinding component 3 is fixedly mounted on the cylinder 200 on the base 1, and the filtering component 2 is provided, which can clean the inside of the inlet and outlet pipe 203 of the ground raw materials while grinding. During use, the ground raw materials are prevented from falling directly into the interior of the container to cause dust splashing, reducing harm to the staff, and also reducing the loss of iron powder, while also improving the grinding and filtering effect of the device.

[0046] The grinding assembly 3 includes a vertical tube 300 threadedly connected to the top of the cylinder 200, and a grinding net 301 is fixedly installed on the inner bottom wall of the vertical tube 300, a rotating rod 302 is inserted on the grinding net 301, and a motor 303 is provided on the top of the rotating rod 302, a grinding plate 304 is fixedly installed on the surface of the rotating rod 302, and a grinding sheet 305 is fixedly installed on one side of the grinding plate 304, and a cleaning plate 306 is fixedly installed on the surface of the rotating rod 302 and below the grinding net 301, and a cleaning brush 307 is inserted on the top of the cleaning plate 306, and the top of the cleaning brush 307 is in contact with the lower surface of the grinding net 301. The grinding assembly 3 is set up, and during use, the grinding net 301 can be cleaned while grinding, which can effectively avoid raw material residue and blockage during the grinding process, and prevent the grinding net 301 from being unable to grind normally after being blocked, thereby maintaining the cleanliness of the grinding net 301 while maintaining the normal use of the grinding device, improving the convenience of use of the grinding device, and facilitating subsequent normal use.

[0047] See also Figure 6 The rotating rod 302 is located on the surface of the inside of the cylinder 200 and is fixedly installed with a scraper 201 and a rubber sheet 202. The bottoms of the scraper 201 and the rubber sheet 202 are both in contact with the inner bottom wall of the cylinder 200. The bottom of the cylinder 200 is connected to a discharge pipe 203, and the surface of the discharge pipe 203 is connected to a valve 204. The bottom of the discharge pipe 203 passes through the base 1 and extends to the outside of the base 1. The scraper 201 and the rubber sheet 202 are arranged to facilitate the scraping and cleaning of iron powder during use, facilitate subsequent use, and also maintain the cleanliness of the cylinder 200.

[0048] See also Figure 3 , support components 5 are provided on both sides of the bottom of the base 1, and the support components 5 include horizontal plates 500 fixedly installed on both sides of the bottom of the base 1, and screw tubes 501 are fixedly installed on both sides of the bottom of the horizontal plates 500. The bottom of the screw tube 501 is threadedly connected with a screw rod 502, and the bottom of the screw 502 is fixedly installed with a support block 503. The surface of the support block 503 is provided with an arc groove. The support component 5 is provided, which makes it convenient to adjust the support height of the four corners of the bottom of the base 1 during use, so that it is convenient to install and position it on different terrains during use, and it is also convenient to maintain the placement stability of the device during use.

[0049] See also Figure 3 and Figure 7An air pump 6 is fixedly installed on one side of the upper surface of the base 1, and the air outlet of the air pump 6 is connected to an air outlet pipe 7. One end of the air outlet pipe 7 is connected to one side of the vertical pipe 300, and one side of the vertical pipe 300 is connected to a connector 8. One end of the air outlet pipe 7 is rotatably connected to a hexagonal nut 9 through a sealed bearing. The hexagonal nut 9 is threadedly connected to the surface of the connector 8. The set air pump 6 can pressurize the inside of the vertical pipe 300 during use, thereby facilitating subsequent extrusion operations, which also facilitates subsequent grinding operations.

[0050] See also Figure 3 One side of the vertical pipe 300 is connected to a feed pipe 308, and one end of the feed pipe 308 is connected to a feed hopper 309. The feed hopper 309 and the feed pipe 308 are connected through a control valve 310. The feed pipe 308 is provided so that the feed can be controlled conveniently during use, and also facilitates subsequent connection operations.

[0051] See also Figure 8-Figure 9 The disassembly component 4 includes a positioning vertical plate 400 fixedly installed on both sides of the top of the vertical tube 300. The tops of the two positioning vertical plates 400 are fixedly connected by a connecting plate 401. A threaded rod 402 is inserted on the connecting plate 401. The bottom of the threaded rod 402 is rotatably connected to a pressure plate 403 through a bearing. A screw rod 404 is inserted on the pressure plate 403. A receiving plate 405 is installed at the bottom of the screw rod 404. The motor 303 is located above the receiving plate 405, and the output shaft of the motor 303 passes through the receiving plate 405 and extends to the outside of the receiving plate 405. The disassembly component 4 is convenient for separating the motor 303 and the rotating rod 302 during use, thereby facilitating the inspection and replacement of components on the motor 303 or the rotating rod 302, avoiding the inability to inspect and replace components after long-term use, improving the convenience of use of the device, and facilitating subsequent assembly operations.

[0052] See also Figure 9 The output shaft of the motor 303 is fixedly installed with a hexagonal rod 406 through a coupling. The bottom of the hexagonal rod 406 is inserted into the top of the rotating rod 302. The top of the rotating rod 302 is provided with a hexagonal hole for the hexagonal rod 406 to be inserted. The receiving plate 405 is provided with a round hole for the output shaft of the power supply machine 303 to pass through. The top of the vertical pipe 300 is provided with a rod hole for the rotating rod 302 to pass through, and the inner wall of the rod hole is rotatably connected to the surface of the rotating rod 302. The set hexagonal rod 406 is conveniently connected to the top of the rotating rod 302 during use, thereby facilitating subsequent disassembly and assembly operations. At the same time, the setting of the rod hole achieves the effect of facilitating the passage of the rotating rod 302, which also facilitates subsequent use.

[0053] See also Figure 8The pressing plate 403 is provided with a through hole for the screw rod 404 to pass through, and the inner wall of the through hole is slidably connected to the surface of the screw rod 404, and the surface of the screw rod 404 is threadedly connected with a nut 408. The surface of the screw rod 404 is also sleeved with an anti-slip ring 407, and the bottom of the anti-slip ring 407 contacts the top of the pressing plate 403, and the bottom of the nut 408 contacts the top of the anti-slip ring 407. The bottom of the pressing plate 403 fits with the top of the motor 303, and the bottom of the motor 303 contacts the upper surface of the receiving plate 405. The anti-slip ring 407 is provided, which facilitates the anti-loosening operation of the nut 408 during use, thereby improving the tightening firmness of the nut 408.

[0054] See also Figure 8 A threaded hole is provided on the connecting plate 401 for the threaded rod 402 to pass through. The threaded hole is threadedly connected to the threaded rod 402, and a rotating block 409 is fixedly installed on the top of the threaded rod 402. A hexagonal hole is provided on the top of the rotating block 409. The threaded hole and the threaded rod 402 are set, which makes it convenient to tighten and loosen the threaded rod 402 during use, which is convenient for subsequent use.

[0055] See also Figure 5 The upper surface of the cleaning plate 306 is provided with a cleaning hole, and the inner bottom wall of the cleaning hole is fixedly installed with an extrusion spring 311, and the top of the extrusion spring 311 is fixedly installed with a movable plate 312, the top of the movable plate 312 is fixedly connected to the bottom of the cleaning brush 307, and the surface of the movable plate 312 is slidably connected to the inner wall of the cleaning hole, and the movable plate 312 is adapted to the cleaning hole. A rotating hole for the rotating rod 302 to pass through is provided on the grinding net 301, and the inner wall of the rotating hole is rotatably connected to the surface of the rotating rod 302. The extrusion spring 311 is provided, which makes it convenient to reset the cleaning brush 307 on the movable plate 312 during use, thereby facilitating the cleaning of the cleaning brush 307 and the grinding net 301, which is convenient for subsequent use.

[0056] Working principle: When in use, place the device at the desired location, then rotate the support block 503 to adjust the position of the screw 502 inside the screw tube 501, thereby adjusting the support height of the bottom of the base 1 to keep the device level.

[0057] When it is necessary to grind the iron powder raw material, the control valve 310 is opened, and then the raw material is added to the inside of the feed pipe 308 through the feed hopper 309, and the raw material enters the inside of the vertical pipe 300 through the feed pipe 308. At this time, the motor 303 and the air pump 6 are controlled to work, and the air pump 6 drives the gas to enter the inside of the vertical pipe 300 through the outlet pipe 7 to pressurize the inside of the vertical pipe 300, and the motor 303 drives the rotating rod 302 on the hexagonal rod 406 to rotate, and the rotating rod 302 simultaneously drives the grinding plate 304 and the grinding sheet 305 to rotate to grind the raw material on the grinding net 301, and the ground raw material enters the inside of the cylinder 201 through the grinding net 301, and at the same time, the cleaning plate 306 drives the cleaning brush 307 to clean the bottom of the grinding net 301 to avoid clogging of the grinding net 301 during the grinding process. At the same time, the iron powder is cleaned by the rotating scraper 201 and the rubber sheet 202 and enters the discharge pipe 203, and the iron powder can be collected by controlling the opening of the valve 204;

[0058] When it is necessary to separate the motor 303 from the rotating rod 302, loosen the nut 408 to separate the pressure plate 403 from the receiving plate 405, and at the same time loosen the threaded rod 402 so that the threaded rod 402 drives the pressure plate 403 to move upward, and then the motor 303 can be lifted upward to separate the hexagonal rod 406 from the rotating rod 302.

[0059] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.

[0060] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A grinding device for preparing micro-nano reduced iron powder from high-purity iron oxide powder, comprising a base (1), characterized in that: A filter assembly (2) is provided on the upper surface of the base (1), a grinding assembly (3) is provided on the top of the filter assembly (2), and a splitting assembly (4) is provided on the top of the grinding assembly (3); The surface of the grinding assembly (3) is fixedly mounted on a cylinder (200) on the base (1); The grinding assembly (3) comprises a vertical tube (300) threadedly connected to the top of the cylinder (200); a grinding net (301) is fixedly installed on the inner bottom wall of the vertical tube (300); a rotating rod (302) is inserted on the grinding net (301); a motor (303) is provided on the top of the rotating rod (302); a grinding plate (304) is fixedly installed on the surface of the rotating rod (302); a grinding sheet (305) is fixedly installed on one side of the grinding plate (304); a cleaning plate (306) is fixedly installed on the surface of the rotating rod (302) and located below the grinding net (301); a cleaning brush (307) is inserted on the top of the cleaning plate (306); and the top of the cleaning brush (307) is in contact with the lower surface of the grinding net (301).

2. The grinding device for preparing micro-nano reduced iron powder from high-purity iron oxide powder according to claim 1, characterized in that: The rotating rod (302) is located on the surface inside the cylinder (200) and is fixedly mounted with a scraper (201) and a rubber sheet (202). The bottoms of the scraper (201) and the rubber sheet (202) are both in contact with the inner bottom wall of the cylinder (200). The bottom of the cylinder (200) is connected to a discharge pipe (203). The surface of the discharge pipe (203) is connected to a valve (204). The bottom of the discharge pipe (203) passes through the base (1) and extends to the outside of the base (1).

3. The grinding device for preparing micro-nano reduced iron powder from high-purity iron oxide powder according to claim 1, characterized in that: Support assemblies (5) are provided on both sides of the bottom of the base (1), and the support assemblies (5) include horizontal plates (500) fixedly mounted on both sides of the bottom of the base (1), and screw tubes (501) are fixedly mounted on both sides of the bottom of the horizontal plates (500), and the bottom of the screw tubes (501) is threadedly connected to a screw rod (502), and a support block (503) is fixedly mounted on the bottom of the screw rod (502), and an arc groove is provided on the surface of the support block (503).

4. The grinding device for preparing micro-nano reduced iron powder from high-purity iron oxide powder according to claim 1, characterized in that: An air pump (6) is fixedly mounted on one side of the upper surface of the base (1); an air outlet of the air pump (6) is connected to an air outlet pipe (7); one end of the air outlet pipe (7) is connected to one side of the vertical pipe (300); one side of the vertical pipe (300) is connected to a connector (8); one end of the air outlet pipe (7) is rotatably connected to a hexagonal nut (9) via a sealed bearing; the hexagonal nut (9) is threadedly connected to the surface of the connector (8).

5. The grinding device for preparing micro-nano reduced iron powder from high-purity iron oxide powder according to claim 1, characterized in that: One side of the vertical pipe (300) is connected to a feed pipe (308), one end of the feed pipe (308) is connected to a feed hopper (309), and the feed hopper (309) and the feed pipe (308) are connected via a control valve (310).

6. The grinding device for preparing micro-nano reduced iron powder from high-purity iron oxide powder according to claim 1, characterized in that: The splitting assembly (4) comprises positioning vertical plates (400) fixedly mounted on both sides of the top of the vertical tube (300), the tops of the two positioning vertical plates (400) are fixedly connected via a connecting plate (401), a threaded rod (402) is inserted into the connecting plate (401), the bottom of the threaded rod (402) is rotatably connected to a pressure plate (403) via a bearing, a screw rod (404) is inserted into the pressure plate (403), a receiving plate (405) is mounted at the bottom of the screw rod (404), the motor (303) is located above the receiving plate (405), and the output shaft of the motor (303) passes through the receiving plate (405) and extends to the outside of the receiving plate (405).

7. The grinding device for preparing micro-nano reduced iron powder from high-purity iron oxide powder according to claim 1, characterized in that: The output shaft of the motor (303) is fixedly mounted with a hexagonal rod (406) via a coupling. The bottom of the hexagonal rod (406) is inserted into the top of the rotating rod (302). The top of the rotating rod (302) is provided with a hexagonal hole for the hexagonal rod (406) to be inserted. The receiving plate (405) is provided with a circular hole for the output shaft of the power supply machine (303) to pass through. The top of the vertical pipe (300) is provided with a rod hole for the rotating rod (302) to pass through, and the inner wall of the rod hole is rotatably connected to the surface of the rotating rod (302).

8. The grinding device for preparing micro-nano reduced iron powder from high-purity iron oxide powder according to claim 6, characterized in that: The pressing plate (403) is provided with a through hole for the screw rod (404) to pass through, and the inner wall of the through hole is slidably connected to the surface of the screw rod (404), the surface of the screw rod (404) is threadedly connected with a nut (408), and the surface of the screw rod (404) is also sleeved with an anti-slip ring (407), the bottom of the anti-slip ring (407) contacts the top of the pressing plate (403), the bottom of the nut (408) contacts the top of the anti-slip ring (407), the bottom of the pressing plate (403) fits with the top of the motor (303), and the bottom of the motor (303) contacts the upper surface of the receiving plate (405).

9. The grinding device for preparing micro-nano reduced iron powder from high-purity iron oxide powder according to claim 6, characterized in that: The connecting plate (401) is provided with a threaded hole for the threaded rod (402) to pass through, the threaded hole is threadedly connected to the threaded rod (402), and a rotating block (409) is fixedly installed on the top of the threaded rod (402), and a hexagonal hole is provided on the top of the rotating block (409).

10. The grinding device for preparing micro-nano reduced iron powder from high-purity iron oxide powder according to claim 1, characterized in that: A cleaning hole is provided on the upper surface of the cleaning plate (306), an extrusion spring (311) is fixedly installed on the inner bottom wall of the cleaning hole, a movable plate (312) is fixedly installed on the top of the extrusion spring (311), the top of the movable plate (312) is fixedly connected to the bottom of the cleaning brush (307), and the surface of the movable plate (312) is slidably connected to the inner wall of the cleaning hole, the movable plate (312) is adapted to the cleaning hole, a rotating hole for the rotating rod (302) to pass through is provided on the grinding net (301), and the inner wall of the rotating hole is rotatably connected to the surface of the rotating rod (302).

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