CN214053655U - High-efficiency controllable nano powder preparing equipment - Google Patents

Abstract

The utility model relates to the technical field of nanometer powder production, and provides a high-efficiency controllable nanometer powder preparation device, which comprises an evaporation device, a continuous feeding device and a condensing device, wherein the evaporation device comprises a first cabin body, an evaporation tube, a crucible and an induction coil which are arranged in the first cabin body, the induction coil is arranged around the outer wall of the crucible, the crucible comprises a crucible body with a heating cavity and a cover body which is covered on the crucible body, one end of the evaporation tube passes through the cover body and is communicated with the heating cavity, the other end of the evaporation tube passes through the cover body and is communicated with the condensing device, the continuous feeding device comprises a feeding cabin, a feeding pipe and a first air inlet pipe, one end of the feeding pipe is communicated with the feeding cabin, the other end of the feeding pipe passes through the cover body and is communicated with the heating cavity, the first air inlet pipe is connected with the feeding pipe to form a passage, the nanometer powder preparation device has high production efficiency and low production cost, and can effectively realize the control of the particle size of nanometer powder, the nanometer powder preparation equipment can prepare nanometer powder with corresponding grain size aiming at different application fields, and has good universality.

Description

High-efficiency controllable nano powder preparing equipment

Technical Field

The utility model relates to a nanometer powder production technical field especially provides a controllable nanometer powder of high efficiency prepares equipment.

Background

The nano powder is ultrafine particles with the particle size range of 1-100 nm, and has extremely important application value in the research fields of metallurgy, machinery, chemical industry, electronics, national defense, nuclear technology, aerospace and the like.

At present, the method for preparing nano-powder comprises various methods, such as an evaporation condensation method, an electric explosion method and the like, wherein the evaporation condensation method is to heat and evaporate raw materials into a gaseous state, and then rapidly cool steam to obtain the nano-powder, and the nano-powder prepared by the evaporation condensation method has the characteristics of high purity, good particle shape, narrow particle size distribution range and the like.

However, because the production mode of the existing nanometer powder preparation equipment applying the evaporation condensation method is a non-continuous production mode, cleaning work is required after the production of each heat is completed, and because the activity and the adhesiveness of the nanometer powder are high, the cleaning work is long in time consumption each time, and the production efficiency is low; meanwhile, after the production of each heat is finished, the crucible of the nano powder preparation equipment is cooled, and after multiple cold and hot cycles, the crucible is broken, so that the crucible needs to be frequently replaced, and the production cost is increased; in addition, the existing nanometer powder preparation equipment is difficult to control the particle size of the nanometer powder in the preparation process, so that the nanometer powder with corresponding particle size can not be prepared aiming at various application fields, and the general performance is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an equipment is prepared to high-efficient controllable nanometer powder, it is low to aim at solving current nanometer powder and prepare equipment production efficiency, and manufacturing cost is high and be difficult to control the particle diameter of nanometer powder, the poor technical problem of commonality ability.

In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions: the utility model provides an equipment is prepared to high-efficient controllable nanometer powder, includes evaporation plant, continuous feeding device and condensing equipment, evaporation plant includes first cabin body, evaporating pipe and all locates crucible and induction coil in the first cabin body, induction coil encircles the outer wall setting of crucible, the crucible is located including the crucible body and the lid that have the heating chamber lid on the crucible body, the one end of evaporating pipe is passed the lid communicate in heating chamber and other end communicate in condensing equipment, continuous feeding device is including feeding cabin, inlet pipe and first intake pipe, the one end of inlet pipe with feeding cabin is linked together and the other end passes the lid communicate in the heating chamber, first intake pipe with the inlet pipe is connected and is formed the route.

The embodiment of the utility model provides an equipment is prepared to high-efficient controllable nanometer powder has following beneficial effect at least: when the crucible is in operation, raw materials are added into the crucible body, the induction coil is electrified and generates electromagnetic induction to heat the crucible body or metal raw materials in the crucible body, when the internal temperature of the crucible body or the temperature of the metal raw materials reaches a preset temperature value, the raw materials begin to evaporate into a gaseous state, inert gas is continuously introduced into the first gas inlet pipe at the moment, the inert gas enters the heating cavity of the crucible body through the feed pipe and carries vapor into the evaporation pipe, and the vapor enters the condensing device through the evaporation pipe and is rapidly cooled in the condensing device to form nanometer powder. In the process, the raw material in the feeding cabin of the continuous feeding device is input into the crucible body through the feeding pipe, so that the raw material is supplemented, the continuous production of the nanometer powder preparation equipment is realized, the trouble of stopping feeding in the past is avoided, the cleaning time of the interior of the equipment is saved, the situation that the crucible is broken after multiple times of cold and hot circulation is avoided, the production efficiency is high, and the production cost is low; in addition, the heating power of the induction coil and the flow rate of the gas in the first gas inlet pipe are adjusted, so that the evaporation speed of the raw materials can be effectively controlled, the purpose of controlling the particle size of the nano powder is achieved, the nano powder preparation equipment can prepare the nano powder with the corresponding particle size according to different application fields, and the universality of the nano powder preparation equipment is effectively improved.

In one embodiment, the condensation device includes a second chamber and a second gas inlet pipe communicated with the second chamber, the crucible is communicated with the second chamber through the evaporation pipe, the evaporation pipe is communicated with the second chamber, and the second gas inlet pipe is used for conveying a cooling medium into the second chamber.

In one embodiment, the condensing device further includes an annular condensing nozzle disposed in the second chamber and having an air inlet cavity formed therein, the second air inlet pipe is communicated with the air inlet cavity of the annular condensing nozzle, the annular condensing nozzle is provided with an air jet along a peripheral wall, an air jet direction of the air jet forms an acute angle with an axis of the annular condensing nozzle, and an outlet end of the evaporation tube is opposite to the annular condensing nozzle.

In one embodiment, the condensing device is disposed on the evaporating device.

In one embodiment, a first heat insulation member is arranged between the condensing device and the evaporating device.

In one embodiment, the continuous feeding device further comprises a feeding mechanism, and the feeding mechanism is arranged between the feeding cabin and the feeding pipe.

In one embodiment, the nano-powder preparation equipment further comprises a collecting device communicated with the condensing device, the collecting device comprises a filtering component, the filtering component comprises a first condensing part and a filtering cloth, and the filtering cloth is coated on the first condensing part.

In one embodiment, the collecting device further comprises a filtering chamber, a first collecting chamber communicated with the filtering chamber, and a fourth air inlet pipe communicated with the first collecting chamber, the filtering assembly is arranged in the filtering chamber, and a second condensing part is arranged in the first collecting chamber.

In one embodiment, the nano-powder producing apparatus further comprises a cyclone separating device, and the cyclone separating device is communicated between the condensing device and the collecting device.

In one embodiment, the evaporation device further comprises a tray and a furnace leakage alarm electrically connected with the induction coil, the tray is arranged in the first chamber and located below the crucible, and the furnace leakage alarm is arranged on the tray.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

FIG. 1 is a schematic structural diagram of an efficient controllable nanometer powder manufacturing apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an evaporation apparatus in the high-efficiency controllable nano-powder producing apparatus shown in FIG. 1;

FIG. 3 is a schematic view of the connection structure of the continuous feeding device and the crucible in the high-efficiency controllable nano-powder preparation apparatus shown in FIG. 1;

FIG. 4 is a schematic structural diagram of a condensing unit in the high-efficiency controllable nano-powder producing apparatus shown in FIG. 1;

FIG. 5 is a schematic structural diagram of an annular condensing spray head in the condensing device shown in FIG. 4;

FIG. 6 is a sectional view taken along line A-A of the annular condensing nozzle shown in FIG. 5;

FIG. 7 is a schematic structural view of a first thermal insulation member in the high-efficiency controllable nano-powder producing apparatus shown in FIG. 1;

FIG. 8 is a schematic structural diagram of a collecting device in the high-efficiency controllable nano-powder producing apparatus shown in FIG. 1;

FIG. 9 is a schematic view of the filter assembly of the collection device of FIG. 8;

fig. 10 is a schematic structural diagram of a cyclone separation device in the high-efficiency controllable nano-powder preparation equipment shown in fig. 1.

Wherein, in the figures, the respective reference numerals:

10. an evaporation device, 11, a first chamber body, 111, a third air inlet pipe, 112, a first vacuum monitor, 113, a first observation window, 12, an evaporation pipe, 13, a crucible, 131, a crucible body, 132, a cover body, 14, an induction coil, 15, a tray, 16, a furnace leakage alarm, 20, a continuous feeding device, 21, a feeding chamber, 211, a second observation window, 22, a feeding pipe, 23, a first air inlet pipe, 24, a material conveying mechanism, 241, a motor, 242, a screw shaft, 25, a first valve, 30, a condensing device, 31, a second chamber body, 32, a second air inlet pipe, 33, an annular condensing nozzle, 331, an air inlet chamber, 332, an air nozzle, 333, a first air inlet, 334, a second air inlet, 40, a first heat insulation piece, 41, a first through hole, 42, a second through hole, 43, an air outlet, 44, a second heat insulation piece, 50, a collecting device, 51, a filtering component, 511, and a first condensing piece, 512. the device comprises filter cloth, 513, a supporting cylinder, 5131, air holes, 52, a filtering cabin, 53, a first collecting cabin, 531, a second condensing part, 532, a second vacuum monitor, 54, a fourth air inlet pipe, 55, a high-pressure impact mechanism, 551, a high-pressure generator, 552, a fifth air inlet pipe, 553, a second electromagnetic valve, 56, a second valve, 57, a vacuum pumping pipe, 58, a first electromagnetic valve, 60, a cyclone separation device, 61, a separation cabin, 62, a second collecting cabin, 621, a sixth air inlet pipe, 622, a third vacuum monitor, 70 and a vacuum generating device.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third", "fourth", "fifth", "sixth" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 to 3, an efficient controllable nano-powder manufacturing apparatus includes an evaporation device 10, a continuous feeding device 20 and a condensation device 30, the evaporation device 10 includes a first chamber 11, an evaporation tube 12, and a crucible 13 and an induction coil 14 both disposed in the first chamber 11, the induction coil 14 is disposed around an outer wall of the crucible 13, the crucible 13 includes a crucible body 131 having a heating cavity and a cover body 132 covering the crucible body 131, one end of the evaporation tube 12 passes through the cover body 132 and is communicated with the heating cavity, and the other end is communicated with the condensation device 30. The continuous feeding device 20 includes a feeding chamber 21, a feeding pipe 22 and a first air inlet pipe 23, wherein one end of the feeding pipe 22 is communicated with the feeding chamber 21, and the other end of the feeding pipe passes through the cover 132 and is communicated with the heating chamber, the first air inlet pipe 23 is connected with the feeding pipe 22 to form a passage, the first air inlet pipe 23 is connected with an external air source, and the external air source is used for delivering inert gas, such as argon, nitrogen, and the like, to the first air inlet pipe 23.

When the nanometer powder preparation equipment works, raw materials are added into the crucible body 131 of the crucible 13, the induction coil 14 is electrified and generates electromagnetic induction to heat the crucible body 131 or metal raw materials in the crucible body 131, when the internal temperature of the crucible body 131 or the temperature of the metal raw materials reaches a preset temperature value, the raw materials begin to evaporate into a gaseous state, inert gas is continuously introduced into the first gas inlet pipe 23 at the moment, the inert gas enters the heating cavity of the crucible body 131 through the feed pipe 22 and carries the steam into the evaporation pipe 12, the steam enters the condensing device 30 through the evaporation pipe 12 and is rapidly cooled in the condensing device 30 to form nanometer powder. In the process, the raw materials in the feeding cabin 21 of the continuous feeding device 20 are input into the crucible body 131 through the feeding pipe 22, so that the raw materials are supplemented, the continuous production of the nanometer powder preparation equipment is realized, the trouble of stopping feeding in the past is avoided, the cleaning time of the interior of the equipment is saved, the situation that the crucible 13 is broken after multiple cold and hot cycles is avoided, the production efficiency is high, and the production cost is low; in addition, the heating power of the induction coil 14 and the flow rate of the gas in the first gas inlet pipe 23 are adjusted, so that the evaporation speed of the raw material can be effectively controlled, the purpose of controlling the particle size of the nano powder is achieved, the nano powder preparation equipment can prepare nano powder with corresponding particle size according to different application fields, and the universality of the nano powder preparation equipment is effectively improved.

Moreover, the inert gas is conveyed to the feeding pipe 22 through the first air inlet pipe 23, so that the feeding pipe 22 can be cooled, and the steam generated in the crucible 13 can be prevented from pouring into the feeding pipe 22.

In the embodiment, please refer to fig. 4, the condensing device 30 includes a second chamber 31 and a second gas inlet pipe 32 connected to the second chamber 31, the evaporation pipe 12 is connected to the second chamber 31, the second gas inlet pipe 32 is connected to an external gas source, and the external gas source delivers a cooling medium into the second chamber 31 through the second gas inlet pipe 32, wherein the cooling medium may be liquid nitrogen, compressed nitrogen, argon, carbon dioxide, hydrogen, or the like. The control of the particle size of the nano-powder is realized by adjusting the flow rate of the cooling medium and changing the type of the cooling medium, so that the control of the particle size of the nano-powder is realized by combining the heating power adjusting technical means of the induction coil 14, the gas flow rate adjusting technical means of the first air inlet pipe 23, the gas flow rate adjusting technical means of the second air inlet pipe 32 and the air inlet type adjusting technical means of the second air inlet pipe 32, the particle size control accuracy of the nano-powder is more effectively improved, the nano-powder preparation equipment can prepare the nano-powder with corresponding particle size according to more different application fields, and the general performance of the nano-powder preparation equipment is more effectively improved.

The above technical solution is exemplified below.

For example, the nano-copper powder is prepared by using the nano-powder preparation equipment, a copper rod material with the diameter of 4mm and the length of 6mm is poured into the crucible body 131 and the feeding cabin 21, the vacuum generation device 70 is started, the air pressure in the first cabin body 11 is pumped to be within 10Pa, the induction coil 14 is started, the power of the induction coil 14 is gradually adjusted to 20KW from small to large, meanwhile, argon is introduced into the crucible 13 through the first air inlet pipe 23, the flow rate is 20L/min, when the molten liquid begins to volatilize in a large amount, liquid nitrogen is introduced into the second cabin body 31 through the second air inlet pipe 32, the vacuum degree in the first cabin body 11 is controlled to reach 20KPa, the particle size of the finally prepared nano-copper powder is mainly distributed in the range of 20nm-60nm, the average particle size is 43nm, and the production efficiency is 400 g/h.

For another example, the nano-copper powder is prepared by using the nano-powder preparation equipment, a copper rod material with the diameter of 4mm and the length of 6mm is poured into the crucible body 131 and the feeding cabin 21, the vacuum generation device 70 is started, the air pressure in the first cabin body 11 is pumped to be within 10Pa, the induction coil 14 is started, the power of the induction coil 14 is gradually adjusted to 22KW from small to large, meanwhile, argon is introduced into the crucible 13 through the first air inlet pipe 23, the flow rate is 22L/min, when the molten liquid begins to volatilize in a large amount, carbon dioxide is introduced into the second cabin body 31 through the second air inlet pipe 32, the vacuum degree in the first cabin body 11 is controlled to reach 15KPa, and finally, the prepared nano-copper powder is mainly distributed in the range of 30nm to 80nm, the average particle size is 52nm, and the production efficiency is 450 g/h.

For another example, the nano-copper powder is prepared by using the nano-powder preparation equipment, a copper rod material with the diameter of 4mm and the length of 6mm is poured into the crucible body 131 and the feeding cabin 21, the vacuum generation device 70 is started, the air pressure in the first cabin body 11 is pumped to be within 10Pa, the induction coil 14 is started, the power of the induction coil 14 is gradually adjusted to 20KW from small to large, meanwhile, argon is introduced into the crucible 13 through the first air inlet pipe 23, the flow rate is 18L/min, when the molten liquid begins to volatilize in a large amount, compressed nitrogen is introduced into the second cabin body 31 through the second air inlet pipe 32, the vacuum degree in the first cabin body 11 is controlled to reach 15KPa, and finally, the prepared nano-copper powder is mainly distributed in the range of 30nm to 100nm, the average particle size is 61nm, and the production efficiency is 380 g/h.

For another example, the nano silver powder is prepared by using the nano powder preparation equipment, water-dropping silver with the particle size of 2mm-4mm is poured into the crucible body 131 and the feeding cabin 21, the vacuum generation device 70 is started, the air pressure in the first cabin body 11 is pumped to be within 10Pa, the induction coil 14 is started, the power of the induction coil 14 is gradually adjusted to 18KW from small to large, meanwhile, argon is introduced into the crucible 13 through the first air inlet pipe 23, the flow rate is 15L/min, when the molten liquid begins to volatilize in a large amount, liquid nitrogen is introduced into the second cabin body 31 through the second air inlet pipe 32, the vacuum degree in the first cabin body 11 is controlled to reach 15KPa, the particle size of the finally prepared nano copper powder is mainly distributed in the range of 30nm-70nm, the average particle size is 45nm, and the production efficiency is 910 g/h.

Specifically, as shown in fig. 2, a third air inlet pipe 111 is disposed on the first chamber 11 and is communicated with the inside of the first chamber, the third air inlet pipe 111 is communicated with an external air source, heat generated by the induction coil during operation is radiated to the first chamber 11, and the external air source delivers a cooling medium into the first chamber 11 through the third air inlet pipe 111, so that the first chamber 11 can be effectively cooled.

Specifically, referring to fig. 2, a first vacuum monitor 112 is disposed on the first chamber 11, and the first vacuum monitor 112 is used for monitoring the vacuum degree in the first chamber 11 in real time.

Specifically, please refer to fig. 2, a first observation window 113 is disposed on the first cabin 11, so that the staff can observe the internal condition of the first cabin 11 in real time.

Specifically, please refer to fig. 3, the continuous feeding device 20 further includes a feeding mechanism 24 disposed between the feeding compartment 21 and the feeding pipe 22, the feeding mechanism 24 includes a motor 241 and a screw shaft 242 connected to a power output end of the motor 241, the raw material in the feeding compartment 21 drops into a space where the screw shaft 242 is located, and the rotation speed of the screw shaft 242 can be controlled by controlling the rotation speed of the motor 241, so as to accurately control the speed of the raw material entering the feeding pipe 22, and realize accurate continuous feeding to the crucible 13, thereby realizing stable continuous production of the nano-powder. In addition, a first valve 25, such as a manual valve, an electric valve, etc., is disposed between the feeding chamber 21 and the feeding mechanism 24, so as to control the feeding chamber 21 to be connected or disconnected with the feeding mechanism 24 according to actual production requirements.

Specifically, please refer to fig. 3, a second observation window 211 is disposed on the feeding chamber 21, so that the staff can observe the usage of the raw material in the feeding chamber 21 in real time.

Specifically, as shown in fig. 4 to fig. 6, the condensing device 30 further includes an annular condensing nozzle 33 disposed in the second cabin 31 and having an air inlet cavity 331 formed therein, the second air inlet pipe 32 is communicated with the air inlet cavity 331 of the annular condensing nozzle 33, the annular condensing nozzle 33 has an air nozzle 332 formed along a peripheral wall thereof, an air injection direction of the air nozzle 332 and an axis of the annular condensing nozzle 33 form an acute angle, and an outlet end of the evaporation tube 12 is disposed opposite to the annular condensing nozzle 33. Specifically, the annular condensation nozzle 33 may be provided with annular air vents 332 continuously along the circumferential wall, or a plurality of air vents 332 at intervals along the circumferential wall, and the cooling medium enters the air inlet cavity 331 of the annular condensation nozzle 33 through the second air inlet pipe 32 and is ejected from the air vents 332 to the outside to form a conical cooling medium barrier, so that the ejection pressure of the cooling medium is increased, the ejection speed is increased, all the vapor ejected from the evaporation pipe 12 can be rapidly cooled, and the particle size distribution of the nano-powder prepared in this way is narrow, and the particle size of the nano-powder is more easily controlled.

Specifically, as shown in fig. 6, an included angle a formed by the gas injection direction of the gas injection port 332 and the axis of the annular condensation nozzle 33 is 20 ° to 70 °, for example, the included angle a is 20 °, further, the included angle a is 45 °, and further, the included angle a is 70 °.

Specifically, as shown in fig. 6, the annular condensation nozzle 33 is symmetrically provided with a first air inlet 333 and a second air inlet 334, and the first air inlet 333 and the second air inlet 334 are both used for connecting with the second air inlet pipe 32, so that the overall air inlet pressure of the annular condensation nozzle 33 can be kept consistent, the injection speeds of the cooling medium injected from the air injection ports 332 at various positions of the annular condensation nozzle 33 are consistent, and the vapor injected from the evaporation pipe 12 can be uniformly and rapidly cooled.

In the embodiment, please refer to fig. 1, the condensing unit 30 is disposed on the evaporating unit 10, for example, the condensing unit 30 is disposed above the evaporating unit 10, or the condensing unit 30 is disposed outside the evaporating unit 10, so that the distance between the condensing unit 30 and the evaporating unit 10 can be shortened to the maximum extent, thereby shortening the length of the evaporating pipe 12, preventing the vapor from flowing in the evaporating pipe 12 for a long time and then cooling and adhering to the inner wall of the evaporating pipe 12, and effectively preventing the evaporating pipe 12 from being blocked.

Specifically, as shown in fig. 1, a first heat insulation member 40 is disposed between the condensing unit 30 and the evaporating unit 10. The first thermal insulation member 40 can effectively block heat in the evaporation device 10 from being conducted into the condensation device 30, thereby ensuring the cooling effect of the condensation device 30.

Specifically, as shown in fig. 7, the first heat insulating member 40 is provided with a first through hole 41 for the feeding pipe 22 of the continuous feeding device 20 to pass through and a second through hole 42 for the evaporation tube 12 of the evaporation device 10 to pass through, wherein a second heat insulating member 44 is disposed between a hole wall of the second through hole 42 and the evaporation tube 12 to prevent the first heat insulating member 40 and the evaporation tube 12 from directly contacting to cause heat on the evaporation tube 12 to be absorbed by the first heat insulating member 40, thereby causing vapor to be cooled in the evaporation tube 12 and adhere to an inner wall of the evaporation tube 12, and effectively preventing the evaporation tube 12 from being blocked.

Specifically, as shown in fig. 7, the first heat insulation member 40 is further provided with an air outlet 43, a filter member (not shown) is disposed in the air outlet 43, the cooling medium enters the first chamber 11 from the third air inlet pipe 111 and is then discharged into the condensation device 30 through the air outlet 43, and the filter member is used for filtering the dust in the first chamber 11 to prevent the interior of the condensation device 30 from being polluted.

Specifically, the first heat insulating member 40 has a hollow disc-shaped structure, and a cooling medium is contained in the first heat insulating member 40 to block heat in the evaporation device 10 from being conducted into the condensation device 30.

In this embodiment, please refer to fig. 8 and 9, the nano-powder manufacturing apparatus further includes a collecting device 50 communicated with the condensing device 30, the collecting device 50 includes a filtering component 51, the filtering component 51 includes a first condensing part 511 and a filtering cloth 512, and the filtering cloth 512 covers the first condensing part 511. Specifically, the filter assembly 51 further includes a support drum 513 having a plurality of air holes 5131, the first condensing element 511 is a condensation pipe and is disposed around an outer wall of the support drum 513, when the nano-powder is adsorbed on the filter cloth 512, heat on the filter cloth 512 is continuously accumulated, and the first condensing element 511 can effectively cool the filter cloth 512 to prevent the filter cloth 512 from burning out.

Specifically, as shown in fig. 8, the collecting device 50 further includes a filtering chamber 52, a first collecting chamber 53 communicated with the filtering chamber 52, and a fourth air inlet pipe 54 communicated with the first collecting chamber 53, the filtering assembly 51 is disposed in the filtering chamber 52, and a second condensing member 531 is disposed in the first collecting chamber 53. After the nano powder is separated from the gas by the filtering component 51, the nano powder falls from the filtering cabin 52 to the first collecting cabin 53, and inert gas is introduced into the first collecting cabin 53 through the fourth gas inlet pipe 54 until the vacuum degree of the first collecting cabin 53 is one atmosphere, so that the nano powder is collected; in addition, if the nano powder in the first collection chamber 53 needs to be subjected to surface micro-passivation treatment, dry air can be slowly introduced into the first collection chamber 53 through the fourth air inlet pipe 54, and meanwhile, the second condensation member 531 absorbs heat generated during nano powder passivation, so that spontaneous combustion of the nano powder caused by rapid accumulation of the heat in the first collection chamber 53 is avoided, and the slow passivation of the nano powder is effectively realized.

Specifically, as shown in fig. 8, the collecting device 50 further includes a high pressure impact mechanism 55, a vacuum tube 57 and a first solenoid valve 58, the external vacuum generator is communicated with the filtering chamber 52 through the vacuum tube 57, the first solenoid valve 58 is disposed on the vacuum tube 57, the high pressure impact mechanism 55 includes a high pressure generator 551, a fifth air inlet tube 552 and a second solenoid valve 553, the fifth air inlet tube 552 is communicated with the filtering assembly 51, the second solenoid valve 553 is disposed on the fifth air inlet tube 552, when a certain amount of nano-powder on the filtering cloth 512 is accumulated, the air suction rate is affected to cause the pressure in the whole filtering assembly to rise, when the first vacuum detector 112 detects that the vacuum degree of the first chamber 11 reaches a set value, the second solenoid valve 553 is opened, and the first solenoid valve 58 is closed, at this time, the high pressure gas from the high pressure generator 551 enters the filtering assembly 51 through the fifth air inlet tube 552, and the high pressure gas impacts the filtering cloth 512, so that the nano powder on the filter cloth 512 is separated and falls into the first collecting chamber 53 to collect the nano powder.

Specifically, as shown in fig. 8, a second vacuum monitor 532 is disposed on the first collection chamber 53, a second valve 56 is disposed between the filtration chamber 52 and the first collection chamber 53, when the nano-powder falls from the filter cloth 512, the second valve 56 is opened, the nano-powder falls into the first collection chamber 53, then the second valve 56 is closed, and the second vacuum monitor 532 monitors the vacuum degree in the first collection chamber 53 in real time.

Specifically, as shown in fig. 1, the nano-powder producing apparatus further includes a cyclone separation device 60, and the cyclone separation device 60 is connected between the condensing device 30 and the collecting device 50. The nanometer powder cooled by the condensing device 30 enters the cyclone separation device 60, the cyclone separation device 60 can separate the nanometer powder with larger particle size, and the nanometer powder with smaller particle size is collected by the collecting device 50, so that the particle size distribution range of the nanometer powder is effectively reduced.

Specifically, as shown in fig. 10, the cyclone separator includes a separation chamber 61 and a second collection chamber 62, a rotating airflow is formed inside the separation chamber 61, the nano-powder flows along with the rotating airflow, wherein the nano-powder with larger particle size falls into the second collection chamber 62 under the action of gravity, and the nano-powder with smaller particle size is collected by the collection device 50.

Specifically, as shown in fig. 10, a sixth air inlet pipe 621 is disposed on the second collection chamber 62, the sixth air inlet pipe 621 is connected to an external air source, and the external air source introduces an inert gas or dry air into the second collection chamber 62 through the sixth air inlet pipe 621, so as to perform protective collection or passivation treatment on the nano-powder in the second collection chamber 62.

Specifically, as shown in fig. 10, a third vacuum monitor 622 is disposed on the second collection chamber 62, and the third vacuum monitor 622 is used for monitoring the vacuum level of the second collection chamber 62 in real time.

In the present embodiment, please refer to fig. 2, the evaporation apparatus 10 further includes a tray 15 and a furnace leakage alarm electrically connected to the induction coil 14, the tray 15 is disposed in the first chamber 11 and below the crucible 13, and the furnace leakage alarm is disposed on the tray 15. When the crucible 13 is broken, the melt flows from the crucible 13 to the tray 15 and contacts the furnace leakage alarm 16, so that the furnace leakage alarm 16 is triggered to act, the power supply of the induction coil 14 is cut off, an alarm is given, and a worker is informed to replace the crucible 13.

Specifically, the tray 15 is in a conical structure, the furnace leakage alarm 16 is arranged in the middle position of the tray 15, and when the crucible 13 is broken, the solution flows from the crucible 13 to the tray 15 and is accumulated in the middle position of the tray 15, and contacts the furnace leakage alarm 16 to trigger the furnace leakage alarm 16 to act, so that the furnace leakage alarm 16 gives an alarm in time.

Specifically, please refer to fig. 1, the nano-powder producing apparatus further includes a vacuum generating device 70, the evaporation device 10, the condensation device 30, the cyclone separation device 60 and the collection device 50 are all communicated with the vacuum generating device 70, and the vacuum generating device 70 is configured to evacuate the inside of the evaporation device 10, the inside of the condensation device 30, the inside of the cyclone separation device 60 and the inside of the collection device 50, so as to maintain the vacuum degree of the evaporation device 10, the vacuum degree of the condensation device 30, the vacuum degree of the cyclone separation device 60 and the vacuum degree of the collection device 50 to reach standard values.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. An efficient controllable nanometer powder preparation device is characterized in that: nanometer powder is prepared equipment and is included evaporation plant, continuous feeding device and condensing equipment, evaporation plant includes first cabin body, evaporating pipe and all locates crucible and induction coil in the first cabin body, induction coil encircles the outer wall setting of crucible, the crucible is located including the crucible body and the lid that have the heating chamber lid on the crucible body, the one end of evaporating pipe is passed the lid communicate in heating chamber and other end communicate in condensing equipment, continuous feeding device is including feeding cabin, inlet pipe and first intake pipe, the one end of inlet pipe with feeding cabin is linked together and the other end passes the lid communicate in the heating chamber, first intake pipe with the inlet pipe is connected and is formed the route.

2. The apparatus for preparing nano-powder with high efficiency and controllability as claimed in claim 1, wherein: the condensation device comprises a second cabin and a second air inlet pipe communicated with the second cabin, the evaporation pipe is communicated with the second cabin, and the second air inlet pipe is used for conveying cooling media into the second cabin.

3. The apparatus for preparing nano-powder with high efficiency and controllability as claimed in claim 2, wherein: the condensing unit is characterized by further comprising an annular condensation sprayer which is arranged in the second cabin and forms an air inlet cavity inside, the second air inlet pipe is communicated with the air inlet cavity of the annular condensation sprayer, an air jet is arranged on the peripheral wall of the annular condensation sprayer, the air jet direction of the air jet and the axis of the annular condensation sprayer form an acute angle, and the outlet end of the evaporating pipe and the annular condensation sprayer are arranged oppositely.

4. The apparatus for preparing nano-powder with high efficiency and controllability as claimed in claim 1, wherein: the condensing unit is arranged on the evaporating unit.

5. The apparatus for preparing nano-powder with high efficiency and controllability as claimed in claim 4, wherein: a first heat insulation piece is arranged between the condensing device and the evaporating device.

6. The apparatus for preparing nano-powder with high efficiency and controllability as claimed in claim 1, wherein: the continuous feeding device further comprises a material conveying mechanism, and the material conveying mechanism is arranged between the feeding cabin and the feeding pipe.

7. The apparatus for preparing nano-powder with high efficiency and controllability as claimed in claim 1, wherein: the nanometer powder preparation equipment further comprises a collecting device communicated with the condensing device, the collecting device comprises a filtering assembly, the filtering assembly comprises a first condensing part and filtering cloth, and the filtering cloth is coated on the first condensing part.

8. The apparatus for preparing nano-powder with high efficiency and controllability as claimed in claim 7, wherein: the collecting device further comprises a filtering cabin, a first collecting cabin communicated with the filtering cabin and a fourth air inlet pipe communicated with the first collecting cabin, the filtering component is arranged in the filtering cabin, and a second condensing part is arranged in the first collecting cabin.

9. The apparatus for preparing nano-powder with high efficiency and controllability as claimed in claim 7, wherein: the nanometer powder preparing equipment also comprises a cyclone separating device, and the cyclone separating device is communicated between the condensing device and the collecting device.

10. The apparatus for preparing nano-powder with high efficiency and controllability as claimed in any one of claims 1 to 9, wherein: the evaporation device further comprises a tray and a furnace leakage alarm electrically connected with the induction coil, the tray is arranged in the first cabin and located below the crucible, and the furnace leakage alarm is arranged on the tray.

Images