Grinding device for nano material preparation

Abstract

The invention discloses a grinding device for nanometer material preparation, relates to the field of material grinding and smashing, and solves the problems that when an existing grinding device for nanometer material preparation is used, feeding and discharging of raw materials are difficult to continuously and synchronously conduct, and the production efficiency of nanometer powder is influenced, the grinding device comprises a mounting base, a rotating cylinder, a conveying device, a driving device and an auxiliary device, according to the grinding device for nano material preparation, the rotating cylinder is conveniently driven to rotate while feeding and discharging are conducted through an auxiliary device, and balls in the rotating cylinder can roll and fall off while grinding raw materials; the driving device is used for buffering the impact force of balls and nanometer material powder in the ball milling equipment, and the received impact force is used for driving the conveying device to suck gas and drive intermittent gas generated inside to flow, so that internal raw materials are pushed to be discharged from the feeding end to the discharging end, and the functions of continuously grinding the raw materials and intermittently discharging the raw materials are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of material grinding and crushing, in particular to a grinding device for preparing nanomaterials. Background Art

[0002] In the process of nanomaterial production and preparation, in order to effectively ensure the particle size of the powder, the powder must be ground, and the ground powder needs to be filtered through a corresponding vibrating screen to obtain the desired diameter of nanopowder. In order to meet the needs of nanopowder grinding, a grinder is indispensable, and there are various types of grinder products in the prior art. The commonly used grinding equipment for nanomaterial preparation is a ball mill.

[0003] The existing ball mill for grinding nanomaterials needs to add the raw materials into the rotating drum at one time during ball milling, and close the two ends of the rotating drum, start the rotating drum to rotate, and drive the raw materials to be continuously ground under the rolling impact of the internal spheres. However, the existing ball milling equipment cannot perform real-time feeding and discharging of materials during grinding. The raw materials can only be uniformly discharged and the next batch of raw materials can be added after the raw materials are ground to a set time. This grinding method is inefficient and it is difficult to achieve the functions of continuous grinding and material collection, which greatly reduces the grinding production efficiency of nanomaterial powder. To this end, the present invention proposes a grinding device for preparing nanomaterials. Summary of the invention

[0004] The purpose of the present invention is to provide a nanomaterial preparation grinding device which is convenient for continuously and uninterruptedly conveying and grinding nanomaterials and improving grinding efficiency, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a grinding device for preparing nanomaterials, comprising a mounting seat, a conveying device, a driving device and an auxiliary device, wherein a rotating cylinder is rotatably connected to the mounting seat, and the two ends of the rotating cylinder are respectively fixedly connected to a front baffle and a rear baffle rotatably connected to the mounting seat, the conveying device comprises a mounting ring fixedly mounted inside the rotating cylinder, an air outlet groove is provided on the front baffle, and an air inlet groove is provided on the rear baffle, and the conveying device is used to blow air through the air outlet groove and to exhaust air through the air inlet groove, so that a unidirectional airflow is carried out inside the rotating cylinder to drive the ground nanomaterials. The material powder flows in one direction and is discharged to the end for collection, so as to achieve the purpose of continuous grinding and intermittent discharging. The driving device includes two sets of fixed cylinders fixedly mounted on both sides of the mounting ring inside the rotating cylinder. The fixed cylinders are provided with driving blocks. The driving device is used to buffer the impact force of the balls and nano-material raw materials inside the ball mill through the driving blocks, and use the received impact force to drive the conveying device to suck the gas. The auxiliary device is installed on the mounting seat to assist in loading and unloading and drive the rotating cylinder to rotate, so as to facilitate the continuous and uninterrupted conveying and grinding of the nano-materials and improve the grinding efficiency.

[0006] Preferably, the conveying device includes a blowing plate slidably connected to the air outlet groove, one side of the blowing plate is fixedly connected to a tension spring fixedly connected to the air outlet groove, a first filter screen is fixedly connected in the mounting ring, both sides of the first filter screen are fixedly connected to a baffle screen fixedly connected to the mounting ring, a suction plate is slidably connected in the air inlet groove, a first spring fixedly connected to the air inlet groove is fixedly connected on the suction plate, a control component for accumulating air in a linkage manner when the driving device blows air, and discharging the air after the air pressure reaches a set intensity is provided in the air outlet groove, and a collecting component is provided in the air inlet groove for collecting nanomaterial powder ground to a desired size in a linkage manner when the driving device pumps air, so as to facilitate one-way gas conveying to drive the raw materials to flow.

[0007] Preferably, the control component includes a fixing ring fixedly mounted on the side of the air outlet groove, a plurality of blowing blocks are fixedly connected to the blowing plate, the blowing blocks pass through the fixing ring and are slidably connected to the fixing ring, blowing holes are provided on the blowing blocks and the blowing plate, and the air outlet groove and the air inlet groove are provided with limiting components for respectively controlling the positions of the blowing plate and the exhaust plate, so as to facilitate the linked air storage when the driving device blows air, and discharge the air after the air pressure reaches the set intensity.

[0008] Preferably, the limiting member includes two groups of clip blocks respectively installed in the air outlet groove and the air inlet groove, the air outlet groove and the air inlet groove are each provided with a first sliding groove, a second spring fixedly connected to one end of the clip block is fixedly connected in the first sliding groove, and the blowing plate and the exhaust plate are each provided with a clip groove clipped with the clip block, so as to facilitate the respective control of the positions of the blowing plate and the exhaust plate.

[0009] Preferably, the collecting member includes a collecting tube that is slidably connected to the rear baffle in a horizontal direction, the outer wall of the collecting tube is fixedly connected to the exhaust plate, one end of the collecting tube is fixedly connected to a second filter screen, a sliding tube is fixedly connected to the exhaust plate, exhaust pipes are provided on the sliding tube and the exhaust plate, a connecting tube that is connected to the exhaust pipe is provided on the rear baffle, a third filter screen is fixedly connected to the connecting tube, a fixed tube that is slidably connected to the outer wall of the sliding tube is fixedly connected to the rear baffle, and a plurality of discharge ports are evenly arranged on the side of the collecting tube, so as to facilitate the collection of nanomaterial powder ground to a desired size when the driving device is exhausting air.

[0010] Preferably, the driving device includes a third spring fixedly mounted on the driving block, a plurality of second slide grooves are evenly arranged in the fixed cylinder, the third spring is fixedly connected to the second slide grooves, the driving block is slidably connected to the second slide grooves, a connecting hole for connecting the second slide grooves on both sides is arranged on the mounting ring, and guide members for controlling the airflow guide are arranged on the front baffle plate and the rear baffle plate, so as to facilitate buffering the impact force of the spheres and nanomaterial powder inside the ball milling equipment through the driving block, and utilize the received impact force to drive the gas suction.

[0011] Preferably, the guide member includes a first pipe fixedly mounted on the front baffle for connecting one end of the second slide groove with the air outlet groove, and a second pipe fixedly connected to the rear baffle for connecting the second slide groove with the air inlet groove, and a one-way valve for controlling the one-way flow of gas is fixedly connected in the first pipe and the second pipe to facilitate control of airflow guidance.

[0012] Preferably, the auxiliary device includes an inlet hopper and an outlet hopper fixedly mounted on the mounting base, one end of the inlet hopper is connected to the opening on the front baffle, and one end of the outlet hopper is connected to the outlet, and the mounting base is provided with a driving member for driving the rotating drum to rotate, so as to assist in loading and unloading materials and drive the rotating drum to rotate.

[0013] Preferably, the driving member includes a motor fixedly mounted on the mounting seat, the output end of the motor is coaxially fixedly connected with a driving gear, and the outer wall of the rotating cylinder is fixedly connected with an outer gear ring meshing with the driving gear to facilitate driving the rotating cylinder to rotate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention solves the problem that the raw materials are difficult to be continuously and synchronously fed in and out when the existing grinding device for preparing nanomaterials is used, which affects the production efficiency of nanomaterial powder grinding. By arranging a conveying device, a driving device and an auxiliary device, it is convenient to load and unload materials through the auxiliary device while driving the rotating drum to rotate. The balls inside the rotating drum will roll and fall while grinding the raw materials. The driving device buffers the impact force of the balls and nanomaterial powder inside the ball mill, and uses the received impact force to drive the conveying device to suck gas, driving intermittent gas flow inside, thereby pushing the internal raw materials from the feeding end to the discharging end. At the same time, this intermittent blowing also avoids In order to avoid the internal raw materials being in a state of continuous scattering and affecting the grinding effect, suction and blowing are performed after grinding for a period of time, so that the ground particles are filtered, collected and discharged. This reciprocating process can achieve the functions of continuous grinding and intermittent discharge of raw materials. At this time, raw materials can also be intermittently added to the rotating drum to achieve the purpose of continuous grinding and uninterrupted work, thereby greatly improving the work efficiency of nanomaterial powder ball milling. The device is simple and fast to operate, does not require additional power drive, and uses the rotation of the rotating drum itself and the impact of the internal sphere to improve work efficiency. At the same time, this buffering also reduces the damage caused by the collision of the spheres and extends the overall service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the partial structure of the auxiliary device of the present invention; Figure 3 for Figure 2 A magnified image of area A; Figure 4 It is a schematic diagram of the local structure of the driving device of the present invention; Figure 5 It is a partial structural cross-sectional view of the driving device of the present invention; Figure 6 for Figure 5 Enlarged view of area B; Figure 7 It is a schematic diagram of the local structure of the conveying device of the present invention; Figure 8 for Figure 7 Enlarged view of area C in the middle; Fig. 9 It is a partial structural cross-sectional view of the conveying device of the present invention; Fig.10 for Fig. 9 Enlarged view of area D in the middle; Fig.11 for Fig. 9Enlarged view of area E.

[0016] In the figure: 1-mounting seat; 2-rotating cylinder; 3-front baffle; 4-rear baffle; 5-motor; 6-mounting ring; 7-air outlet groove; 8-air inlet groove; 9-driving gear; 10-fixed cylinder; 11-driving block; 12-external gear ring; 13-blowing plate; 14-tension spring; 15-first filter screen; 16-blocking screen; 17-exhaust plate; 18-first spring; 19-control part; 20-collecting part; 21-fixing ring; 22-blowing block; 23-blowing hole; 24-limiting part; 25-clamping block; 26-first slide groove; 27-second spring; 28-clamping groove; 29-collecting pipe; 30-second filter screen; 31-sliding pipe; 32-exhaust pipe; 33-connecting pipe; 34-third filter screen; 35-fixed pipe; 36-discharge port; 37-third spring; 38-second slide groove; 39-connecting hole; 40-guide member; 41-first pipeline; 42-second pipeline; 43-one-way valve; 44-feed hopper; 45-discharge hopper; 46-driving member. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0018] Example 1

[0019] See also Figure 1-Figure 11 The figure shows a grinding device for preparing nanomaterials, comprising a mounting seat 1, a conveying device, a driving device and an auxiliary device. A rotating cylinder 2 is rotatably connected to the mounting seat 1, and two ends of the rotating cylinder 2 are respectively fixedly connected to a front baffle 3 and a rear baffle 4 rotatably connected to the mounting seat 1. The conveying device comprises a mounting ring 6 fixedly mounted inside the rotating cylinder 2, an air outlet groove 7 is provided on the front baffle 3, and an air inlet groove 8 is provided on the rear baffle 4. The conveying device is used to blow air through the air outlet groove 7 and to exhaust air through the air inlet groove 8, so that a unidirectional airflow is carried out inside the rotating cylinder 2 to drive the grinding. The ground nanomaterial powder flows in one direction and is discharged to the end for collection, so as to achieve the purpose of continuous grinding and intermittent discharging. The driving device includes two sets of fixed cylinders 10 fixedly mounted on both sides of the mounting ring 6 inside the rotating cylinder 2. The fixed cylinder 10 is provided with a driving block 11. The driving device is used to buffer the impact force of the balls and nanomaterial raw materials inside the ball mill through the driving block 11, and use the received impact force to drive the conveying device to suck the gas. The auxiliary device is installed on the mounting seat 1, and is used to assist in loading and unloading and drive the rotating cylinder 2 to rotate.

[0020] The auxiliary device includes an inlet hopper 44 and an outlet hopper 45 fixedly mounted on the mounting base 1. One end of the inlet hopper 44 is connected to the opening on the front baffle 3. The mounting base 1 is provided with a driving member 46 for driving the rotating drum 2 to rotate. The driving member 46 includes a motor 5 fixedly mounted on the mounting base 1. The model of the motor 5 is preferably Y80M1-2. The output end of the motor 5 is coaxially fixedly connected with a driving gear 9, and the outer wall of the rotating drum 2 is fixedly connected with an outer gear ring 12 meshing with the driving gear 9.

[0021] In this embodiment, the material is fed through the feed hopper 44, and the nanomaterial powder raw material to be ground is injected into the rotating cylinder 2. The motor 5 is started to drive the driving gear 9 to rotate, so that the outer gear ring 12 drives the rotating cylinder 2 to rotate. There are multiple groups of grinding balls of different sizes distributed inside the rotating cylinder 2. The friction and rolling between the balls achieve friction and extrusion of the raw material to complete the grinding.

[0022] The driving device buffers the impact force of the spheres and nanomaterial powder inside the ball mill, and uses the received impact force to drive the conveying device to suck the gas, so that the air inlet groove 8 is sucked and the air outlet groove 7 is blown at the same time, driving the intermittent gas flow inside, thereby pushing the internal raw materials from the feed end to the discharge end. At the same time, this intermittent blowing also avoids the internal raw materials from being in a state of continuous scattering, thereby avoiding affecting the grinding effect. After grinding for a period of time, suction and blowing are performed once, so that the ground particles are filtered, collected and discharged. This reciprocating process can achieve the purpose of continuous grinding and intermittent discharge of raw materials.

[0023] At this time, the raw materials can also be intermittently added to the rotating drum 2 to achieve the purpose of continuous grinding and uninterrupted work, thereby greatly improving the work efficiency of nanomaterial powder ball milling. The device is simple and quick to operate, and does not require additional power drive. It uses the rotation of the rotating drum 2 itself and the impact of the internal sphere to improve work efficiency. At the same time, this buffering also reduces the damage caused by the collision of the spheres and extends the overall service life of the equipment.

[0024] Example 2

[0025] See also Figure 1-Figure 11, this embodiment further illustrates the first embodiment, the conveying device shown in the figure includes a blowing plate 13 slidably connected to the air outlet groove 7, one side of the blowing plate 13 is fixedly connected to a tension spring 14 fixedly connected to the air outlet groove 7, a first filter screen 15 is fixedly connected in the mounting ring 6, both sides of the first filter screen 15 are fixedly connected to a baffle screen 16 fixedly connected to the mounting ring 6, a suction plate 17 is slidably connected in the air inlet groove 8, a first spring 18 fixedly connected to the air inlet groove 8 is fixedly connected on the suction plate 17, a control member 19 for storing air in linkage when the driving device blows air and discharging the air after the air pressure reaches the set intensity is provided in the air outlet groove 7, a collecting member 20 is provided in the air inlet groove 8 for collecting the nano material powder ground to a desired size in linkage when the driving device pumps air.

[0026] The control member 19 includes a fixing ring 21 fixedly mounted on the side of the air outlet groove 7, a plurality of blowing blocks 22 are fixedly connected to the air blowing plate 13, the blowing blocks 22 penetrate the fixing ring 21 and are slidably connected to the fixing ring 21, blowing holes 23 are provided on the air blowing blocks 22 and the air blowing plate 13, and the air outlet groove 7 and the air inlet groove 8 are provided with limiting members 24 for respectively controlling the positions of the air blowing plate 13 and the air extraction plate 17, the limiting members 24 include two groups of clamping blocks 25 respectively mounted in the air outlet groove 7 and the air inlet groove 8, a first slide groove 26 is provided in the air outlet groove 7 and the air inlet groove 8, a second spring 27 fixedly connected to one end of the clamping block 25 is fixedly connected in the first slide groove 26, and a clamping groove 28 clamped to the clamping block 25 is provided on the air blowing plate 13 and the air extraction plate 17.

[0027] The collecting member 20 includes a collecting pipe 29 which is slidably connected to the rear baffle 4 in a horizontal direction, the outer wall of the collecting pipe 29 is fixedly connected to the exhaust plate 17, one end of the collecting pipe 29 is fixedly connected to a second filter screen 30, a sliding pipe 31 is fixedly connected to the exhaust plate 17, an exhaust pipe 32 is provided on the sliding pipe 31 and the exhaust plate 17, a connecting pipe 33 which is connected to the exhaust pipe 32 is provided on the rear baffle 4, a third filter screen 34 is fixedly connected in the connecting pipe 33, a fixed pipe 35 which is slidably connected to the outer wall of the sliding pipe 31 is fixedly connected to the rear baffle 4, a plurality of discharge ports 36 are evenly arranged on the side of the collecting pipe 29, and one end of the discharge hopper 45 is connected to the discharge port 36.

[0028] In the present embodiment, the driving device drives the air outlet groove 7 to be inflated, and at the same time, the air inlet groove 8 is sucked, so that the air pressure in the air outlet groove 7 gradually increases, pushing the blowing plate 13 to slide in the air outlet groove 7, and the tension spring 14 gradually stretches. At this time, the opening of the blowing hole 23 is blocked by the fixing ring 21. When the air pressure in the air outlet groove 7 gradually increases, the blowing block 22 gradually slides out with the blowing plate 13 until the blowing hole 23 is exposed and connected to the inside of the rotating cylinder 2. At this time, the blowing plate 13 just moves to the position where the clamping block 25 is clamped with the clamping groove 28 and is stuck. At this time, the gas in the air outlet groove 7 is quickly discharged into the rotating cylinder 2 through the blowing hole 23, thereby driving the raw material on one side of the front baffle 3 to be blown to the side of the rear baffle 4.

[0029] The raw materials ground to a certain extent after being filtered by the first filter screen 15 are filtered to the other side through the mounting ring 6 in the middle. At this time, the raw materials added through the feed hopper 44 will continue to stay on the side close to the front baffle plate 3 for grinding. The retaining nets 16 on both sides of the first filter screen 15 are used to prevent the grinding balls from hitting and damaging the first filter screen 15. When the air pressure in the air outlet groove 7 is reduced to the point where the tension of the tension spring 14 is greater than the limiting force of the clamping block 25, the clamping block 25 is released from the clamping, and the blowing plate 13 is pulled back to its original position by the tension spring 14. The blowing hole 23 is blocked by the fixing ring 21 again. The purpose of intermittent blowing can be achieved by repeating this process, so that the air pressure during blowing is relatively large, rather than continuous slight blowing. Increasing the instantaneous blowing force is more convenient for pushing the raw materials. At the same time, it also provides the raw materials with a relatively calm space during grinding, avoiding continuous blowing that causes the raw materials to float in the air for a long time, affecting the effect of mutual grinding between the raw materials and the grinding balls.

[0030] It is worth noting that: the driving device drives the air inlet groove 8 to be evacuated, so that the air pressure in the air inlet groove 8 is reduced, so that the air extraction plate 17 continuously slides toward the side of the first spring 18, compressing the first spring 18, and the collecting pipe 29 moves together with the air extraction plate 17, so that the discharge port 36 is blocked by the rear baffle 4 and is no longer connected with the discharge hopper 45. As the air pressure gradually decreases, when the clamping groove 28 on the blowing plate 13 is clamped into the clamping block 25, the clamping groove 28 on the air extraction plate 17 is just clamped into the clamping block 25. At this time, the air extraction pipe 32 is connected with the connecting pipe 33, and the connecting pipe 33 is connected with the discharge port 36. The gas in the rotating cylinder 2 can be drawn into the collecting pipe 29 through the second filter screen 30, and drawn into the air inlet groove 8 through the discharge port 36, the connecting pipe 33, the third filter screen 34 and the air extraction pipe 32. At this time, the nano material powder ground into particles of a set size is collected in the collecting pipe 29 and blocked outside the third filter screen 34.

[0031] After that, the air pressure in the air inlet groove 8 rises. When the air pressure makes the elastic force of the first spring 18 greater than the clamping force of the clamping block 25, the vacuum plate 17 can be moved in the opposite direction and reset, and the collecting pipe 29 is gradually pushed out. The discharge port 36 is connected to the discharge hopper 45. With the rotation of the rotating cylinder 2 and the discharge port 36, the raw materials in the collecting pipe 29 can be rotated and thrown into the discharge hopper 45 for collection. This reciprocating process can achieve the purpose of intermittently drawing in finished products and intermittently discharging them.

[0032] Example 3

[0033] See also Figure 1-Figure 8 The present embodiment further illustrates the first embodiment. The driving device shown in the figure includes a third spring 37 fixedly mounted on the driving block 11. A plurality of second slide grooves 38 are evenly arranged in the fixed cylinder 10. The third spring 37 is fixedly connected to the second slide grooves 38. The driving block 11 is slidably connected to the second slide grooves 38. A connecting hole 39 for connecting the second slide grooves 38 on both sides is arranged on the mounting ring 6. A guide member 40 for controlling the airflow guide is arranged on the front baffle plate 3 and the rear baffle plate 4.

[0034] The guide member 40 includes a first pipe 41 fixedly mounted on the front baffle plate 3 for connecting one end of the second slide groove 38 with the air outlet groove 7, and a second pipe 42 fixedly connected on the rear baffle plate 4 for connecting the second slide groove 38 with the air inlet groove 8, and a one-way valve 43 for controlling the one-way flow of gas is fixedly connected in the first pipe 41 and the second pipe 42.

[0035] In this embodiment, the grinding balls will roll inside the rotating cylinder 2 during the rotation of the rotating cylinder 2, thereby continuously hitting the driving block 11 located on the lower side, pressing the driving block 11 down into the second slide groove 38, compressing the third spring 37, and compressing the gas in the second slide groove 38. The gas enters the air outlet groove 7 through the first pipe 41 and the one-way valve 43, thereby increasing the air pressure in the air outlet groove 7, thereby achieving the effect of blowing.

[0036] At the same time, when the second slide groove 38 there is rotated to the upper side of the rotating cylinder 2, the driving block 11 there is not squeezed by the grinding ball at this time, so that the driving block 11 pops out under the push of the third spring 37, and the second slide groove 38 performs a vacuum operation, thereby drawing the gas in the second pipe 42 into the second slide groove 38, and the gas in the air inlet groove 8 can be drawn into the second slide groove 38 through the second pipe 42 and the one-way valve 43. In this way, the air inlet groove 8 can be continuously evacuated and the air outlet groove 7 can be continuously blown, and the air flows are mutually circulated, the structure is stable, and no additional driving source is required for driving, which is easy to use.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grinding device for preparing nanomaterials, characterized in that: include: A mounting seat (1), the mounting seat (1) being rotatably connected to a rotating cylinder (2), and both ends of the rotating cylinder (2) being respectively fixedly connected to a front baffle (3) and a rear baffle (4) rotatably connected to the mounting seat (1); Also includes: A conveying device, the conveying device comprising a mounting ring (6) fixedly mounted inside the rotating cylinder (2), an air outlet groove (7) being provided on the front baffle plate (3), and an air inlet groove (8) being provided on the rear baffle plate (4), the conveying device being used to blow air through the air outlet groove (7) and to draw air through the air inlet groove (8), thereby causing a unidirectional airflow inside the rotating cylinder (2), driving the ground nano material powder to flow in a unidirectional manner and be discharged to the end for collection, thereby achieving the purpose of continuous grinding and intermittent discharge; A driving device, the driving device comprising two sets of fixed cylinders (10) fixedly mounted on both sides of the mounting ring (6) inside the rotating cylinder (2), the fixed cylinders (10) being provided with driving blocks (11), the driving device being used to buffer the impact force of the balls and nano material raw materials inside the ball milling device through the driving blocks (11), and to drive the conveying device to extract gas using the received impact force; An auxiliary device is mounted on the mounting seat (1) and is used to assist in loading and unloading materials and to drive the rotating drum (2) to rotate.

2. A grinding device for preparing nanomaterials according to claim 1, characterized in that: The conveying device comprises an air blowing plate (13) slidably connected to the air outlet groove (7), a tension spring (14) fixedly connected to the air outlet groove (7) is fixedly connected to one side of the air blowing plate (13), a first filter screen (15) is fixedly connected inside the mounting ring (6), both sides of the first filter screen (15) are fixedly connected to a retaining screen (16) fixedly connected to the mounting ring (6), an air extraction plate (17) is slidably connected inside the air inlet groove (8), a first spring (18) fixedly connected to the air inlet groove (8) is fixedly connected to the air extraction plate (17), a control member (19) for storing air in conjunction with the driving device when blowing air and discharging the air after the air pressure reaches a set intensity is provided in the air outlet groove (7), and a collecting member (20) for collecting nano material powder ground to a desired size in conjunction with the driving device when exhausting air is provided in the air inlet groove (8).

3. A grinding device for preparing nanomaterials according to claim 2, characterized in that: The control member (19) comprises a fixing ring (21) fixedly mounted on the side of the air outlet groove (7); a plurality of groups of air blowing blocks (22) are fixedly connected to the air blowing plate (13); the air blowing blocks (22) penetrate the fixing ring (21) and are slidably connected to the fixing ring (21); air blowing holes (23) are provided on the air blowing blocks (22) and the air blowing plate (13); and the air outlet groove (7) and the air inlet groove (8) are provided with stoppers (24) for respectively controlling the positions of the air blowing plate (13) and the air extraction plate (17).

4. A grinding device for preparing nanomaterials according to claim 3, characterized in that: The limiting member (24) comprises two groups of clamping blocks (25) respectively installed in the air outlet groove (7) and the air inlet groove (8); the air outlet groove (7) and the air inlet groove (8) are both provided with a first slide groove (26); a second spring (27) fixedly connected to one end of the clamping block (25) is fixedly connected in the first slide groove (26); and a clamping groove (28) clamped to the clamping block (25) is provided on the air blowing plate (13) and the air extraction plate (17).

5. The grinding device for preparing nanomaterials according to claim 4, characterized in that: The collecting member (20) comprises a collecting pipe (29) connected to the rear baffle plate (4) in a sliding manner in a horizontal direction, the outer wall of the collecting pipe (29) is fixedly connected to the air extraction plate (17), one end of the collecting pipe (29) is fixedly connected to a second filter screen (30), a sliding pipe (31) is fixedly connected to the air extraction plate (17), an air extraction pipe (32) is provided on the sliding pipe (31) and the air extraction plate (17), a connecting pipe (33) connected to the air extraction pipe (32) is provided on the rear baffle plate (4), a third filter screen (34) is fixedly connected inside the connecting pipe (33), a fixed pipe (35) connected to the outer wall of the sliding pipe (31) is fixedly connected to the rear baffle plate (4), and a plurality of discharge ports (36) are evenly provided on the side of the collecting pipe (29).

6. A grinding device for preparing nanomaterials according to claim 5, characterized in that: The driving device comprises a third spring (37) fixedly mounted on the driving block (11); a plurality of groups of second slide grooves (38) are evenly arranged in the fixed cylinder (10); the third spring (37) is fixedly connected to the second slide grooves (38); the driving block (11) is slidably connected to the second slide grooves (38); a connecting hole (39) for connecting the second slide grooves (38) on both sides is arranged on the mounting ring (6); and a guide member (40) for controlling airflow guidance is provided on both the front baffle plate (3) and the rear baffle plate (4).

7. A grinding device for preparing nanomaterials according to claim 6, characterized in that: The guide member (40) comprises a first pipe (41) fixedly mounted on the front baffle plate (3) for connecting one end of the second slide groove (38) with the air outlet groove (7); a second pipe (42) fixedly connected to the rear baffle plate (4) for connecting the second slide groove (38) with the air inlet groove (8); and one-way valves (43) for controlling one-way flow of gas are fixedly connected to the first pipe (41) and the second pipe (42).

8. The grinding device for preparing nanomaterials according to claim 5, characterized in that: The auxiliary device comprises an inlet hopper (44) and an outlet hopper (45) fixedly mounted on the mounting seat (1); one end of the inlet hopper (44) is connected to an opening on the front baffle (3); one end of the outlet hopper (45) is connected to the outlet (36); and a driving member (46) for driving the rotating drum (2) to rotate is provided on the mounting seat (1).

9. A grinding device for preparing nanomaterials according to claim 8, characterized in that: The driving member (46) comprises a motor (5) fixedly mounted on the mounting seat (1), the output end of the motor (5) being coaxially fixedly connected to a driving gear (9), and the outer wall of the rotating cylinder (2) being fixedly connected to an outer gear ring (12) meshing with the driving gear (9).

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