Preparation device of oxygen-containing acid radical modified iron-based composite nanomaterial

Abstract

The application discloses a preparation device of oxygen-containing acid radical modified iron-based composite nanomaterial, which comprises a self-rotating ball milling barrel driven by a power system and a dustproof barrel arranged on the ball milling barrel. A feeding assembly is arranged on the feeding end of the ball milling barrel, a discharging mesh barrel is coaxially arranged on the discharging end of the ball milling barrel, the inner diameter of the discharging mesh barrel is larger than the outer diameter of the ball milling barrel, an end cover is arranged on the end face of the discharging mesh barrel away from the feeding end, a moving assembly capable of driving the end cover to reciprocate along the axial direction of the ball milling barrel is arranged on the end cover, and a discharging port is arranged on the corresponding position of the dustproof barrel and the ball milling barrel. The discharging mesh barrel, the end cover and the moving assembly are arranged on the discharging end of the ball milling barrel, the moving device can be started to drive the end cover to move away from the discharging end of the ball milling barrel after the reaction is completed, at this time, the discharging mesh barrel can screen the product, and the product not meeting the requirements can continue to be left in the ball milling barrel, so that the product quality and the reaction efficiency are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nanomaterials, and in particular to a preparation device for oxygen-containing acid radical modified iron-based composite nanomaterials. BACKGROUND

[0002] Oxygen-containing acid radical modified iron-based composite nanomaterials have a wide range of applications in the fields of medicine and catalysis. Generally, oxygen-containing acid radical modified iron-based composite nanomaterials are achieved through high temperature or chemical changes. According to the synthesis principle, the current synthesis methods of oxygen-containing acid radical modified iron-based composite nanomaterials can be divided into physical methods and chemical methods. These methods have been widely used in the synthesis of powders such as oxygen-containing acid radical modified iron-based composite nanomaterials. Physical methods can produce ultrafine particles with easy control of particle size, but the required equipment is expensive, and it is impossible to synthesize materials with specific functions such as oxygen-containing acid radical modified materials simultaneously. Chemical methods are low in cost, simple in conditions, and easy to adjust particle size through process control, but have a narrow range of applications, a long process, low yield, and cannot be produced industrially.

[0003] High-energy ball milling combines the advantages of physical and chemical methods. The basic principle is that the mechanical force can stimulate the chemical activity of the crystal material during the ultrafine grinding process, so that the reaction that usually needs to be carried out at high temperature can be carried out at a lower temperature. Therefore, high-energy ball milling can synthesize ultrafine powders with specific functions that cannot be obtained by general chemical methods and heating methods. The above advantages make this powder preparation method produce special ultrafine powders, greatly improving the synthesis process level of composite materials.

[0004] However, the current high-energy ball milling device is not designed according to the preparation requirements of functionalized iron-based materials. The material after the chemical reaction still stays in the ball milling cavity, and it is impossible to ensure that the reaction degree and reaction time of each part of the material are the same, so the efficiency is very low, and it is difficult to play the advantages of the combination of physical and chemical methods. In view of this, a preparation device for oxygen-containing acid radical modified iron-based composite nanomaterials relying on the principle of high-energy ball milling is particularly necessary. SUMMARY

[0005] The present application discloses a preparation device for oxygen-containing acid radical modified iron-based composite nanomaterials to improve the above-mentioned problems generated by the application of physical and chemical methods in the preparation process of oxygen-containing acid radical modified iron-based composite nanomaterials.

[0006] The technical scheme adopted by the present application to solve the above technical problems is:

[0007] In order to achieve the above-mentioned purposes, the application discloses a device for preparing oxygen-containing acid radical modified iron-based composite nanomaterials, which comprises a self-rotating ball milling barrel driven by a power system and a dustproof barrel arranged on the ball milling barrel, a feeding assembly is arranged at the feeding end of the ball milling barrel, a discharge mesh barrel coaxial with the ball milling barrel is arranged at the discharging end of the ball milling barrel, the inner diameter of the discharge mesh barrel is larger than the outer diameter of the ball milling barrel, an end cover is installed on the end face of the discharge mesh barrel away from the feeding end, a moving assembly capable of driving the end cover to reciprocate along the axial direction of the ball milling barrel to start or stop the discharging of the ball milling barrel is arranged on the end cover, and a discharge port is arranged at the corresponding position of the dustproof barrel and the ball milling barrel.

[0008] Optionally, the moving assembly is a pneumatic cylinder, the cylinder barrel of the pneumatic cylinder is installed on the dustproof barrel, and the piston rod of the pneumatic cylinder is installed on the end cover.

[0009] Optionally, a flexible connecting barrel is arranged between the ball milling barrel and the discharge mesh barrel, the discharge mesh barrel is installed on the end cover through a bearing, and the length of the flexible connecting barrel is greater than the maximum distance between the end cover and the discharging end of the ball milling barrel.

[0010] Optionally, a guide rod is arranged on the ball milling barrel, and a limiting block for the guide rod to pass through is arranged at the corresponding position of the discharge mesh barrel.

[0011] Optionally, the discharge port is connected with a temporary storage box through a discharge pipe.

[0012] Optionally, a baffle plate is arranged at the feeding end of the ball milling barrel, a feeding port is arranged on the baffle plate, and the feeding port is coaxial with the ball milling barrel.

[0013] Optionally, the feeding assembly comprises a feeding pipe coaxial with the ball milling barrel, the outlet of the feeding pipe is located at the feeding port, and a gap is arranged between the feeding port and the feeding pipe.

[0014] Optionally, a nebulizer is arranged at the feeding port, the nebulizer is connected with a nebulizer liquid storage tank through a liquid delivery pipe, and an anti-collision baffle is arranged above the nebulizer.

[0015] Optionally, the dustproof barrel is arranged on a base plate, a rotating shaft is arranged on the base plate close to the feeding end of the ball milling barrel, and a lifting assembly capable of rotating the base plate around the rotating shaft to adjust the height of the base plate is arranged on the base plate close to the discharging end of the ball milling barrel.

[0016] Optionally, a heater is arranged in the dustproof barrel close to the discharging end of the ball milling barrel.

[0017] Optionally, the feeding pipe is provided with an air inlet connected with an air source through an air pipe, the end cover is provided with an air outlet, the inner side of the air outlet is provided with a cloth bag filtering device, and the outer side of the air outlet is connected with an air outlet pipe, the air outlet pipe is provided with a first electromagnetic valve, the first electromagnetic valve is signal connected with a first controller for controlling the first electromagnetic valve to open and close at a specified frequency, and the air outlet pipe between the air outlet and the first electromagnetic valve is connected with a back blowing air source through a high pressure air pipe, the high pressure air pipe is provided with a second electromagnetic valve, and the second electromagnetic valve is signal connected with a second controller for controlling the second electromagnetic valve to open and close at a specified frequency.

[0018] Compared with the prior art, the application has the beneficial effects of:

[0019] The application is provided with a discharge mesh cylinder, an end cover and a moving assembly at the discharge end of the ball milling cylinder, after the reaction is completed, the moving device can be opened to drive the end cover away from the discharge end of the ball milling cylinder, at this time, the discharge mesh cylinder can screen the product, and the product that does not meet the requirements can continue to be left in the ball milling cylinder, so that the product quality and the reaction efficiency are improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Fig. 1 The structure schematic diagram of the preparation device of the oxygen-containing acid radical modified iron-based composite nanomaterial disclosed by the embodiments of the application is shown;

[0022] Fig. 2 The partial sectional view of the preparation device of the oxygen-containing acid radical modified iron-based composite nanomaterial disclosed by the embodiments of the application is shown;

[0023] Fig. 3 The structure schematic diagram of the ball milling cylinder disclosed by the embodiments of the application is shown.

[0024] In the figure: 1-power system; 2-ball milling cylinder; 3-dustproof cylinder; 4-discharge mesh cylinder; 5-end cover; 6-moving assembly; 7-discharge port; 8-flexible connecting cylinder; 9-guide rod; 10-temporary storage box; 11-material blocking plate; 12-feeding pipe; 13-bottom plate; 14-liquid conveying pipe; 15-dust removal cloth bag. DETAILED DESCRIPTION

[0025] The application will be further described in detail below by specific examples and in combination with the drawings.

[0026] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present application disclosed in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0028] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0029] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0030] In the description of the embodiments of the present application, it should be noted that the indicated position or location relationship is based on the position or location relationship shown in the drawings, or the position or location relationship commonly placed when the product of the present application is used, or the position or location relationship commonly understood by those skilled in the art, or the position or location relationship commonly placed when the product of the present application is used, which is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the indicated device or element must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0031] In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connect" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] Embodiments:

[0033] Reference Figs. 1 to 3The embodiment of the application discloses a preparation device of oxygen-containing acid radical modified iron-based composite nanomaterial, which comprises a self-rotating ball milling barrel 2 driven by a power system 1 and a dustproof barrel 3 covering the ball milling barrel 2, a feeding assembly is arranged at the feeding end of the ball milling barrel 2, a discharge mesh barrel 4 is coaxially arranged at the discharging end of the ball milling barrel 2, the inner diameter of the discharge mesh barrel 4 is larger than the outer diameter of the ball milling barrel 2, an end cover 5 is installed on the end face of the discharge mesh barrel 4 away from the feeding end, a moving assembly 6 capable of driving the end cover 5 to reciprocate along the axial direction of the ball milling barrel 2 so as to start or stop the discharging of the ball milling barrel 2 is arranged on the end cover 5, and a discharge port 7 is arranged at the corresponding position of the dustproof barrel 3 and the ball milling barrel 2.

[0034] In the application, the high-energy ball milling device is used for preparing the oxygen-containing acid radical modified iron-based composite nanomaterial, the existing ball mill can only add the raw materials into the ball milling barrel 2 after being mixed, and the product is transferred out after the reaction is completed, so that continuous production cannot be realized, therefore, in the application, the discharge mesh barrel 4, the end cover 5 and the moving assembly 6 are arranged at the discharging end of the ball milling barrel 2, in specific application, the feeding assembly adds the raw materials into the ball milling barrel 2, the end cover 5 covers the discharging end of the ball milling barrel 2 at the beginning of the reaction, so that the materials cannot separate from the ball milling barrel 2, and the materials can continuously react in the ball milling barrel 2, after the reaction is completed, the moving device can drive the end cover 5 to move away from the discharging end of the ball milling barrel 2, at this moment, the discharge mesh barrel 4 can screen the product, the product with a particle size meeting the requirements can pass through the screen mesh and leave from the discharge port 7, and the product not meeting the requirements can remain in the ball milling barrel 2, and then the moving assembly 6 can drive the end cover 5 to move close to and close the discharging end of the ball milling barrel 2, and the materials remaining in the ball milling barrel 2 can continue to be ball milled and reacted with the next added reaction raw materials.

[0035] The power system 1 in the embodiment can be selected according to actual working conditions and requirements in the prior art, a motor shaft combination can be adopted, a driving roller and a driven roller can be arranged below the ball milling barrel 2 to drive the ball milling barrel 2 to rotate, or other modes can be adopted.

[0036] The inner diameter of the discharge mesh barrel 4 in the embodiment is larger than the outer diameter of the ball milling barrel 2, so that the end cover 5 can drive the discharge mesh barrel 4 to move, and the movement of the discharge mesh barrel 4 is not hindered by the ball milling barrel 2, specifically, the inner diameter of the discharge mesh barrel 4 is slightly larger than the outer diameter of the ball milling barrel 2, if the gap between the two is too small, the particles enter the gap between the ball milling barrel 2 and the discharge mesh barrel 4, and the movement of the discharge mesh barrel 4 is easily affected, if the gap between the two is too large, the product not meeting the requirements is temporarily stored in the gap and cannot return to the ball milling barrel 2, thereby affecting the preparation efficiency and effect of the product.

[0037] In the optional embodiment, the moving assembly 6 is a pneumatic cylinder, the cylinder barrel of the pneumatic cylinder is installed on the dustproof barrel 3, and the piston rod of the pneumatic cylinder is installed on the end cover 5.

[0038] The cylinder drives the end cover 5 to reciprocate, which is simple in structure and convenient to assemble.

[0039] In an optional embodiment, a flexible connecting cylinder 8 is arranged between the ball milling cylinder 2 and the discharge mesh cylinder 4, the discharge mesh cylinder 4 is mounted on the end cover 5 through a bearing, and the length of the flexible connecting cylinder 8 is greater than the maximum distance between the end cover 5 and the discharge end of the ball milling cylinder 2.

[0040] In order to avoid that the material directly exits from the gap between the discharge mesh cylinder 4 and the ball milling cylinder 2 through the discharge mesh cylinder 4, thereby affecting the quality of the product, the flexible connecting cylinder 8 is arranged between the discharge mesh cylinder 4 and the end cover 5, the flexible connecting cylinder 8 in the embodiment preferably adopts some materials with high strength and good wear resistance, and if necessary, a woven mesh can be adopted, and metal or wire can be added in the wire of the woven mesh to improve the strength and wear resistance. However, it should be noted that the aperture of the mesh hole of the woven mesh or other connecting cylinders with mesh holes should be less than or equal to the aperture of the discharge mesh cylinder 4.

[0041] In order to facilitate the complete discharge of the material in the device or the replacement of the grinding balls, the flexible connecting cylinder 8 and the discharge mesh cylinder 4 or the ball milling cylinder 2 can be connected in a detachable manner.

[0042] In an optional embodiment, a guide rod 9 is arranged on the ball milling cylinder 2, and a limiting block for the guide rod 9 to pass through is arranged at a position corresponding to the guide rod 9 on the discharge mesh cylinder 4.

[0043] If the ball milling cylinder 2 drives the discharge mesh cylinder 4 to rotate through the flexible connecting cylinder 8, the requirement for the flexible connecting cylinder 8 is very high, and the asynchronization between the ball milling cylinder 2 and the discharge mesh cylinder 4 can make the flexible connecting cylinder 8 be stirred together, thereby hindering the end cover 5 from approaching the ball milling cylinder 2. Therefore, the guide rod 9 and the limiting block are arranged, the guide rod 9 passes through the limiting block, and the ball milling cylinder 2 and the discharge mesh cylinder 4 can rotate synchronously.

[0044] In the embodiment, the guide rod 9 can be uniformly provided with a plurality of guide rods 9 along the circumference of the ball milling cylinder 2, and each guide rod 9 is correspondingly provided with a limiting block to disperse the stress. Preferably, the outer diameter of the guide rod 9 and the aperture of the sliding hole of the limiting block for the guide rod 9 to pass through are matched, and the end of the guide rod 9 is provided with a limiting piece to avoid the limiting block from being separated.

[0045] In an optional embodiment, the discharge port 7 is connected with a temporary storage box 10 through a discharge pipe, which facilitates the temporary storage of the product.

[0046] In an optional embodiment, a baffle plate 11 is arranged at the feeding end of the ball milling cylinder 2, the baffle plate 11 is provided with a feeding port, and the feeding port and the ball milling cylinder 2 are coaxially arranged, which facilitates feeding and avoids the reactants from separating from the ball milling cylinder 2.

[0047] In an optional embodiment, the feeding assembly comprises a feeding pipe 12 coaxially arranged with the ball milling barrel 2, the outlet of the feeding pipe 12 is located at the feeding port, and a gap is arranged between the feeding port and the feeding pipe 12.

[0048] The feeding pipe 12 is coaxially arranged with the ball milling shaft, so that the rotation of the ball milling barrel 2 does not affect the feeding; the gap arranged between the feeding port and the feeding pipe 12 can avoid the friction between the feeding pipe 12 and the feeding port, and can also play a buffering role to reduce the influence of the vibration of the ball milling barrel 2 caused by the impact of the grinding balls on the feeding pipe 12.

[0049] In an optional embodiment, an atomizer is further arranged at the feeding port, the atomizer is connected with an atomizing liquid tank through a liquid delivery pipe 14, and an anti-collision baffle is arranged above the atomizer.

[0050] In order to improve the reaction efficiency, raw materials containing oxygen-containing acid radicals such as oxalic acid, boric acid, phosphoric acid and the like, and auxiliary agents such as surfactants can be added into the ball milling barrel 2 through the atomizer.

[0051] In order to reduce the impact on the atomizer, the atomizer is preferably arranged at the feeding port or just extends into the ball milling barrel 2, the liquid droplets can extend into the ball milling barrel 2 by the spraying inertia provided by the atomizer, if necessary, the gap between the feeding port and the feeding pipe 12 can be increased, a circulating fan is arranged at the feeding port, so that the gas moves in the ball milling barrel 2 from the feeding end to the discharging end, and then moves between the ball milling barrel 2 and the dustproof barrel 3 from the discharging end to the feeding end.

[0052] In an optional embodiment, the dustproof barrel 3 is arranged on the base plate 13, the base plate 13 is provided with a rotating shaft near the feeding end of the ball milling barrel 2, and the base plate 13 is provided with a lifting assembly near the discharging end of the ball milling barrel 2, which can rotate the base plate 13 around the rotating shaft to adjust the height of the base plate 13.

[0053] In order to facilitate feeding and discharging, the ball milling device in the embodiment can be installed on the base plate 13 before use, and the base plate 13 is provided with a jack or the like structure near the feeding end of the ball milling barrel 2, so that the inclination angle of the ball milling barrel 2 can be adjusted to a certain extent, thereby facilitating feeding and discharging.

[0054] In an optional embodiment, a heater is arranged in the dustproof barrel 3 near the discharging end of the ball milling barrel 2, which can facilitate the adjustment of the reaction temperature, and can also facilitate the drying of the product reaching the discharging end, thereby improving the efficiency and enabling the product to smoothly pass through the discharging mesh barrel 4.

[0055] In an optional embodiment, the feeding pipe is provided with an air inlet connected with an air source through an air pipe, the end cover 5 is provided with an air outlet, the air outlet is provided with a cloth bag filter 15 inside, and the air outlet is connected with an air outlet pipe outside, the air outlet pipe is provided with a first electromagnetic valve, the first electromagnetic valve is connected with a first controller for controlling the first electromagnetic valve to open and close at a specified frequency; the air outlet pipe between the air outlet and the first electromagnetic valve is connected with a back blowing air source through a high pressure air pipe, the high pressure air pipe is provided with a second electromagnetic valve, and the second electromagnetic valve is connected with a second controller for controlling the second electromagnetic valve to open and close at a specified frequency.

[0056] When the device of the embodiment works normally, air is blown into the device through the air inlet and leaves from the air outlet, the air flows in the ball mill barrel 2, and the air in the ball mill barrel 2 is disturbed, so that the large particles and small particles in the ball mill barrel 2 are separated, the small particle materials can continue to react in the ball mill barrel 2, the large particle materials fall on the barrel wall and interact with the grinding balls under the action of gravity and centrifugal force, the particle size is further reduced, and the large particle materials can float in the ball mill barrel 2 when the particle size is reduced to a certain extent. In addition, in order to avoid that the materials follow the air to leave the ball mill barrel 2, the cloth bag filter 15 is arranged at the air outlet, the materials can be intercepted in the ball mill barrel 2, and in order to avoid that the materials in the cloth bag filter 15 are too much, the back blowing air source is arranged, air can be blown into the cloth bag filter at a specified frequency, so that the particles adhered to the cloth bag filter 15 are separated from the cloth bag filter 15. It should be noted that the second electromagnetic valve is closed when the first electromagnetic valve is connected, and the second electromagnetic valve is opened for a very short time, which will not cause excessive accumulation of air in the ball mill barrel, and will not affect the safe operation of the reaction.

[0057] In addition, high temperature resistant rubber rings and other components can be arranged outside the end cover 5, so that when the materials are not needed to be discharged, the end cover 5 is pushed into the ball mill barrel 2 to be sealed as much as possible between the end cover 5 and the ball mill barrel 2.

[0058] The above is only a preferred embodiment of the application and is not used to limit the application. For those skilled in the art, the application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A device for preparing oxygen-containing acid radical-modified iron-based composite nanomaterials, characterized in that: include: A ball milling cylinder driven to rotate by a power system and a dust-proof cylinder covering the ball milling cylinder, a feeding assembly being provided at the feeding end of the ball milling cylinder, a discharging mesh cylinder being provided coaxially with the ball milling cylinder at the discharging end, the inner diameter of the discharging mesh cylinder being larger than the outer diameter of the ball milling cylinder, an end cover being provided on the end surface of the discharging mesh cylinder away from the feeding end, a moving assembly being provided on the end cover that can drive the end cover to reciprocate along the axis direction of the ball milling cylinder to start or stop the ball milling cylinder from discharging, and a discharging port being provided at the corresponding position of the dust-proof cylinder and the ball milling cylinder; The feed assembly includes a feed pipe coaxially arranged with the ball mill, the outlet of the feed pipe is located at the feed port, and a gap is provided between the feed port and the feed pipe; a baffle plate is provided at the feed end of the ball mill, the baffle plate is provided with a feed port, and the feed port and the ball mill are coaxially arranged; and further includes an atomizer located at the feed port, the atomizer is connected to an atomized liquid storage tank via an infusion tube, and an anti-collision baffle is provided above the atomizer; The feed pipe is provided with an air inlet, which is connected to the air source through an air pipe, and the end cover is provided with an air outlet, a bag filter device is provided on the inner side of the air outlet, and the outer side of the air outlet is connected to the air outlet pipe, and a first solenoid valve is provided on the air outlet pipe, and the first solenoid valve signal is connected to a first controller that controls the first solenoid valve to open and close at a specified frequency; the air outlet pipe between the air outlet and the first solenoid valve is connected to a back-blowing air source through a high-pressure air pipe, and a second solenoid valve is provided on the high-pressure air pipe, and the second solenoid valve signal is connected to a second controller that controls the second solenoid valve to open and close at a specified frequency.

2. The device for preparing an oxygen-containing acid radical-modified iron-based composite nanomaterial according to claim 1, characterized in that: The moving component is a cylinder, the cylinder barrel of the cylinder is installed on the dustproof cylinder, and the piston rod of the cylinder is installed on the end cover.

3. The device for preparing an oxygen-containing acid radical-modified iron-based composite nanomaterial according to claim 2, characterized in that: A flexible connecting cylinder is provided between the ball mill and the discharge mesh cylinder. The discharge mesh cylinder is mounted on the end cover via a bearing. The length of the flexible connecting cylinder is greater than the maximum distance between the end cover and the discharge end of the ball mill.

4. The device for preparing an oxygen-containing acid radical-modified iron-based composite nanomaterial according to claim 3, characterized in that: The ball mill cylinder is provided with a guide rod, and the discharging mesh cylinder is provided with a limit block for the guide rod to pass through at a position corresponding to the guide rod.

5. The device for preparing an oxygen-containing acid radical-modified iron-based composite nanomaterial according to claim 1, characterized in that: The discharge port is connected to a temporary storage box through a discharge pipe.

6. The device for preparing an oxygen-containing acid radical-modified iron-based composite nanomaterial according to claim 1, characterized in that: The dustproof cylinder is arranged on the bottom plate, a rotating shaft is arranged on the bottom plate near the feeding end of the ball mill, and a lifting component is arranged on the bottom plate near the discharging end of the ball mill to enable the bottom plate to rotate around the rotating shaft to adjust the height of the bottom plate.

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