Nanometer metal powder filtering, collecting and self-discharging device

Abstract

The invention discloses a nanometer metal powder filtering, collecting and self-discharging device. Comprising a filtering material returning barrel wall, a powder filtering material returning bin, a filtering material returning hopper wall, a filtering material returning hopper bin, a filtering material returning pipe, a filtering material returning opening, a buffering input opening, a filtering input opening, a filtering material returning cover, a filtering output pipe, a connecting bolt barrel, a metal cylinder filtering wall H, a gas filtering bin D, a metal filtering conical wall D, a conical nano-particle filter element and a VV-shaped surface adsorption preventing gasket. The powder filtering and returning device is characterized in that a filtering and returning barrel wall and a filtering and returning hopper wall form a powder filtering and returning bin and a filtering and returning hopper bin; a buffering input port and a filtering input port are formed in the side wall of the filtering material returning barrel wall; the device has the beneficial effects that inert gas is discharged from the filtering output pipe for recycling, nano metal powder is automatically discharged from the filtering return port and the filtering return pipe, nano metal powder accumulation is avoided, the finished product collection efficiency of the nano metal powder is high, and the production efficiency and the production benefit of a nano metal powder production system are improved.

Description

Technical Field

[0001] The invention relates to production equipment for manufacturing nano metal powder, in particular to a nano metal powder filtering, collecting and self-draining device. Background Art

[0002] With the development of science and technology and the progress of the times, the application of nanometal materials in high-tech fields is becoming more and more extensive, especially nanometal powder, which is widely used in antibacterial and antiviral, medical diagnosis and imaging high-end medical equipment, drug delivery, grinding and polishing, aerospace, 3D printing, catalysis, functional ceramics, electronics, new energy, precision instruments, precision manufacturing and other fields.

[0003] There are many methods for preparing nano-metal powders, mainly physical vapor deposition, electric explosion, mechanical crushing, etc.; among them, physical vapor deposition, also known as evaporation condensation, is a relatively mature method for manufacturing nano-metal powders, and the particle size of the manufactured nano-metal powder products reaches 5-10nm; the normal evaporation condensation method for producing nano-metal powders is to heat the metal material to a high temperature in a high-temperature evaporation furnace to form metal vapor, and then introduce the metal vapor into a condensation device, and use an inert gas to quench and condense the metal vapor, thereby generating nano-metal powders with fine particles.

[0004] In the past years of production practice in manufacturing nano-metal powder, we have found that there are many production technology problems, production efficiency problems and product quality defects in the manufacture of nano-metal powder products. There are many defects and problems in the powder collection device used to manufacture nano-metal powder. The defects and problems include: the metal powder volume remains in the filter, resulting in low filtration efficiency; the nano-metal powder remaining in the filter needs to be cleaned frequently, and cleaning the nano-metal powder in the filter causes downtime and production stoppage, which seriously affects the production efficiency of the nano-metal powder.

[0005] In order to solve the above problems and defects, we actively organized a technical team, summarized the production experience and practical work lessons over the years, combined with relevant technical theories, conducted in-depth exploration and research, and carried out a lot of creative work such as design, testing, trial, optimization and improvement of powder collection equipment for manufacturing nano metal powder. Summary of the invention

[0006] The present invention provides a nano metal powder filtering, collecting and self-draining device, which can solve the technical problems mentioned in the background technology.

[0007] The technical solution to the technical problem solved by the present invention is: a nano metal powder filtering and collecting powder self-draining device, comprising a filtering and returning material cylinder wall, a powder filtering and returning material bin, a filtering and returning material hopper wall, a filtering and returning material hopper bin, a filtering and returning material pipe, a filtering and returning material port, a buffer input port, a filtering input port, a filtering and returning material cover, a filtering and outputting pipe, a connecting bolt cylinder, a metal cylindrical filtering wall H, a gas filtering bin D, a metal filtering cone wall D, a conical nano particle filter element, and a VV-shaped anti-surface adsorption gasket; the filtering and outputting pipe is used to connect an inert gas tank and an air compressor input, the filtering and input port is used to connect a mid-position condensing and filtering device and an air compressor output, the buffer input port is used to connect a low-position buffer powder gathering tank, and the filtering and returning material pipe is used to connect a powder collecting and anti-caking device.

[0008] The function of the present invention is to filter and separate the inert gas that has reacted with the metal vapor condensation reaction in the median condensation filtration device of the nano metal powder production system into clean inert gas and metal powder, and transport the clean inert gas to the inert gas tank and the air compressor for reuse, and transport the filtered metal powder to the powder collection and anti-caking device. The present invention has high filtration efficiency, avoids the trouble of frequent shutdown and filter cleaning in the prior art, and reduces the cost of frequent filter replacement, which can reduce the production cost of manufacturing nano metal powder.

[0009] The application of the present invention is to use the technical solution of the present invention in a nano-metal powder production system, wherein the nano-metal powder production system includes a high-level condensing device, a mid-level condensation and filtration device, a low-level buffer powder gathering tank, a powder collecting and anti-caking device, metal ore, a metal evaporation furnace, an inert gas tank, an air compressor, the present invention, an electromagnetic reversing valve, a vacuum packaging machine, finished nano-metal powder, a three-water level spiral tube cooling system, a control system, nano-metal powder, a metal evaporation furnace and metal ore; the metal vapor evaporated from the metal ore by the metal vapor in the metal evaporation furnace enters the high-level condensing device, a part of the metal vapor in the high-level condensing device is condensed into metal nano-powder by the inert gas in the inert gas tank and then transported to the powder collecting and anti-caking device, the other part of the metal vapor is transported to the mid-level condensation and filtration device for further condensation into metal powder and then transported to the powder collecting and anti-caking device, the other part of the metal vapor is transported to the low-level buffer powder gathering tank, the low The metal vapor in the high-level buffer powder gathering tank is buffer-cooled in the low-level buffer powder gathering tank into nano-metal powder, which is then transported to the powder collecting and anti-agglomeration device; the powder collecting and anti-agglomeration device heats and stirs the nano-metal powder in the high-level condensing device, the middle-level condensation and filtration device, and the low-level buffer powder gathering tank, and then transports it to the vacuum packaging machine, and the vacuum packaging machine packages the nano-metal powder into vacuum-packaged nano-metal powder; when the middle-level condensation and filtration device is working, the inert gas high-pressure pulse input of the inert gas tank is impact-condensed with the metal vapor through the air compressor and the electromagnetic reversing valve, and then the inert gas condensed with the metal powder is transported to the present invention for filtration through the electromagnetic reversing valve at intervals, and after filtering the inert gas, the present invention returns the nano-metal powder to the powder collecting and anti-agglomeration device, and at the same time returns the inert gas to the inert gas tank; the three-water-level spiral tube cooling system is used to cool the high-level condensing device, the middle-level condensation and filtration device, and the low-level buffer powder gathering tank.

[0010] Due to the effect of the present invention in the nano-metal powder production system, the recycling of inert gas and the recovery of nano-metal powder can be integrated, so that the uncondensed metal vapor of the high-level condensing device is transported to the middle-level condensation and filtering device for further condensation and collection in the compartment insulation, and the remaining uncondensed metal vapor of the middle-level condensation and filtering device is further output to the low-level buffer powder gathering tank for low-temperature condensation into nano-metal powder, segmented collection of nano-metal powder, centralized anti-caking treatment of nano-metal powder, and vacuum packaging of nano-metal powder can be realized, so that the collection efficiency of the finished product of nano-metal powder is high, production energy is saved, and production costs are reduced, so that the particle size of the nano-metal powder is uniform, non-agglomerated, and the quality is excellent and stable, which can make the nano-metal powder production system have high production efficiency, low cost, and good production benefits.

[0011] Furthermore, in order to improve the production efficiency of the nano-metal powder production system, the technical solutions associated with the present invention also include: an electromagnetic reversing valve is provided between the mid-position condensation filter device, the air compressor, and the present invention, and the function of the electromagnetic reversing valve is to continuously switch the mid-position condensation filter device and the air compressor, and the channel of the present invention to form an interval or input the high-pressure inert gas of the air compressor into the mid-position condensation filter device and the metal vapor condensation, or input the inert gas of the mid-position condensation filter device into the present invention, so that the mid-position condensation filter device has a continuous interval of high-pressure inert gas impacting the metal vapor, and can continuously and intermittently deliver the inert gas that has impacted the metal vapor to the present invention, so that the mid-position condensation filter device continuously and uninterruptedly inhales new high-pressure inert gas and exhales the inert gas that has been condensed, thereby continuously ensuring the high-efficiency production of nano-metal powder by the mid-position condensation filter device. This method can also improve the forming quality of the nano-metal powder, so that the particle size of the nano-metal powder is uniform and the roundness is good.

[0012] Furthermore, in order to improve the production efficiency of the nano-metal powder production system and solve the problem that condensed metal powder is easy to agglomerate; the technical scheme associated with the present invention is: the powder collecting and anti-agglomeration device includes: a powder collecting cylinder wall, a powder collecting cylinder silo, a powder collecting hopper wall, a powder collecting hopper silo, a powder collecting cylinder cover, a sealing ring C, a cover fixing bolt C, a hanging frame, a spiral stirring paddle, a heating hopper, a powder collecting hopper funnel, a powder collecting hopper leak, a powder collecting conveying pipe, a valve FCa, a vacuum gauge ZYCa, a valve FCb, a solenoid valve DFDa, a valve FCc, a solenoid valve DFDb, a valve FCd, Valve FCf, filter C, solenoid valve DFDc, valve FCe, vacuum gauge ZYCb, temperature sensor tDa, stirring motor, nano metal powder input channel A, nano metal powder input channel B, nano metal powder input channel C, nano metal powder input channel D; the valve FCb is used to connect the high-level condensation device, the valve FCc is used to connect the mid-level condensation and filtration device, the valve FCd is used to connect the low-level buffer powder tank, the valve FCf is used to connect the present invention, and the valve FCa is used to connect the vacuum packaging machine.

[0013] The powder collecting and anti-agglomeration device is used to gather the nano metal powder input by the high-position condensation device, the middle-position condensation and filtration device, the low-position buffer powder gathering tank, and the present invention, and adopts a spiral stirring blade and a heating bucket to stir and heat the nano metal powder, which can prevent the nano metal powder from agglomerating due to long-term accumulation, thereby achieving the purpose of collecting the nano metal powder and solving the problem of the nano metal powder agglomerating, so that the powder collecting and anti-agglomeration device can achieve the effect of aggregating the nano metal powder and preventing agglomeration.

[0014] Furthermore, in order to improve the production efficiency of the nano-metal powder production system, prevent the powder particles condensed by metal vapor from clogging the filter, and prevent the powder from agglomerating on the filter without falling, causing the powder to thicken and clog the filter; the technical solutions associated with the present invention also include: the mid-position condensation and filtration device includes a cooling bucket wall, a cooling cylinder wall, a cooling silo, a cooling cylinder cover), a sealing ring B, a cover bolt B, a movable vibration partition, an anti-blocking filter, a vibration bracket, a vibrator), a buffer ring bracket ring, an elastic buffer ring, a metal vapor input port, a valve FBa, and an electromagnetic valve DFBa , metal vapor buffer outlet, valve FBb, mid-position spiral cooling pipe, mid-position cooling output port, mid-position cooling input port, cooling powder gathering hopper bin, cooling hopper powder leakage port, valve FBc, solenoid valve DFBb, pressure gauge YBa, air inlet and outlet pipes, valve FBd, conduit, buffer ring upper cover ring, air filter bin, temperature sensor tBa; the cooling silo is a cylindrical cone bottom structure, and a movable vibration partition is installed in the cooling silo; an anti-blocking filter is installed in the movable vibration partition, a vibration bracket is installed on the movable vibration partition, and a vibrator is installed on the vibration bracket.

[0015] The beneficial effects of the present invention are: the nano-metal powder and the inert gas in the gas reacted with the metal vapor and the inert gas can be automatically separated, the inert gas can be discharged from the filter output pipe for reuse, and the nano-metal powder can be automatically discharged from the filter return port and the filter return pipe without generating residual nano-metal powder, so that the present invention can continuously and uninterruptedly filter and separate the metal vapor and the inert gas, and can effectively ensure the continuous operation of the nano-metal powder production system, and play the role of continuously producing nano-metal powder without stopping the machine, so that the finished product collection efficiency of the nano-metal powder is high, production energy is saved, production costs are reduced, and the production efficiency and production benefits of the nano-metal powder production system can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic diagram of the structure and working principle of a nano metal powder production system.

[0017] Figure 2 It is a structural cross-sectional view of the present invention.

[0018] The numbers in the figure are: 1. high-level condensing device; 2. mid-level condensing and filtering device; 3. low-level buffer powder gathering tank; 4. powder collecting and anti-caking device; 5. metal ore; 6. metal evaporation furnace; 7. inert gas tank; 8. air compressor; 9. the present invention; 10. electromagnetic reversing valve; 11. vacuum pump; 12. vacuum packaging machine; 13. finished nano-metal powder; 14. water tank stacked heat exchanger; 15. liquid cavity wall bottomless tube heat dissipation tower; 16. control system; 17. nano-metal powder; 18. water pump A; 19. water pump B.

[0019] 1016. High-position spiral cooling tube; 2018. Middle-position spiral cooling tube; 302. Low-position spiral cooling tube.

[0020] 83. One-way valve Ha; 84. One-way valve Hb.

[0021] 901. Filter return barrel wall; 902. Powder filter return bin; 903. Filter return hopper wall; 904. Filter return hopper bin; 905. Filter return pipe; 906. Filter return port; 907. Buffer input port; 908. Filter input port; 909. Filter return cover; 9010. Filter output pipe; 9011. Connecting bolt barrel; 9012. Metal cylinder filter wall H; 9013. Gas filter bin D; 9014. Metal filter cone wall D; 95. Conical nanoparticle filter element; 96. VV-shaped anti-surface adsorption gasket.

[0022] Tube; 302. Low position spiral cooling tube.

[0023] 1601. Cooling controller; 1700. Connecting pipe. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0025] exist Figure 1 , Figure 2The present invention is applied to a nano-metal powder production system, the nano-metal powder production system comprising a high-position condensing device (1), a mid-position condensing and filtering device (2), a low-position buffer powder gathering tank (3), a powder collecting and anti-caking device (4), a metal ore (5), a metal evaporation furnace (6), an inert gas tank (7), an air compressor (8), the present invention (9), an electromagnetic reversing valve (10), a vacuum pump (11), a vacuum packaging machine (12), finished nano-metal powder (13), a water tank stacked heat exchanger (14), a liquid cavity wall bottomless tube heat dissipation tower (15), a control system (16), nano-metal powder (17), a water pump A (18), a water pump B (19), a high-position spiral cooling pipe (1016), a mid-position spiral cooling pipe (2018), and a low-position spiral cooling pipe (3 02), one-way valve Ha (83), one-way valve Hb (84); the function of the present invention (9) in the nano-metal powder production system is to further filter and separate the inert gas that has reacted with the metal vapor output by the mid-level condensation and filtration device (2) and the low-level buffer powder gathering tank (3) of the nano-metal powder production system, and discharge the separated clean inert gas and nano-metal powder in two separate ways, so that the filtered clean inert gas can be discharged to the nano-metal powder production system for reuse, and the filtered nano-metal powder can be automatically transported to the powder collecting and anti-caking device (4) of the nano-metal powder production system for collection, thereby avoiding the trouble of frequent shutdown for cleaning the filter in the prior art, and reducing the cost of frequent filter replacement, thereby reducing the production cost of manufacturing nano-metal powder.

[0026] exist Figure 2 , Figure 1The present invention (9) is a nano-metal powder filtering and collecting powder self-draining device, and the present invention (9) comprises a filter return barrel wall (901), a powder filter return bin (902), a filter return hopper wall (903), a filter return hopper bin (904), a filter return pipe (905), a filter return port (906), a buffer input port (907), a filter input port (908), a filter return cover (909), a filter output pipe (9010), a connecting bolt barrel (9011), a metal cylindrical filter wall H (9012), a gas filter bin D (9013), a metal filter cone wall D (9014), a cone-shaped nano-particle filter element (95), and a VV-shaped The filter output pipe (9010) is used to connect the inert gas tank (7) and the air compressor (8) input, the filter input port (908) is used to connect the mid-level condensation filter device (2) and the air compressor (8) output, the buffer input port (907) is used to connect the low-level buffer powder collection tank (3), and the filter return pipe (905) is used to connect the powder collection and anti-caking device (4); the present invention (9) is characterized in that: the filter return barrel wall (901) is a cylindrical structure, and the filter return hopper wall (903) is a conical hopper structure; the filter return barrel wall (901) and the filter return hopper wall (903) of the present invention (9) are composed of The powder filtration return bin (902) and the filtration return hopper bin (904) are formed; the powder filtration return bin (902) is provided with a detachable conical nano-particle filter element (95); the side wall of the filtration return barrel wall (901) is provided with a buffer input port (907) and a filter input port (908); the buffer input port (907) is used to input the inert gas of the low-position buffer powder gathering tank (3), and the filter input port (908) is used to input the inert gas of the mid-position condensation filtration device (2); the lower ends of the filtration return hopper wall (903) and the filtration return hopper bin (904) are provided with a filter return pipe (905) and a filter return port (906) for inputting the inert gas of the low-position buffer powder gathering tank (3); The nano-metal powder is discharged from the filter return hopper (904); the filter return barrel wall (901) and the upper end of the powder filter return bin (902) are provided with a filter return cover (909); a filter output pipe (9010) is provided in the middle of the filter return cover (909) for outputting the filtered inert gas; a VV-shaped anti-surface adsorption gasket (96) is provided between the filter return barrel wall (901) and the filter return cover (909) for sealing the connection between the filter return barrel wall (901) and the filter return cover (909) to prevent leakage of the inert gas; and the V-shaped end surface of the VV-shaped anti-surface adsorption gasket (96) has the function of preventing adsorption of excess nano-metal powder;The conical nanoparticle filter element (95) is a V-shaped cone body structure, which is composed of a metal cylindrical filter wall H (9012), a gas filter chamber D (9013), and a metal filter cone wall D (9014). The metal filter cone wall D (9014) is a V-shaped cone body formed by spraying a plurality of molybdenum particles with a diameter of 10-40 nanometers, has a plurality of gaps of 5-20 nanometers, and has a gas filter chamber D (9013) in the middle. The inert gas that has reacted with metal vapor can pass through the outside of the metal filter cone wall D (9014) into the gas filter chamber D (9013), and the nano metal powder in the inert gas can be filtered outside the gas filter chamber D (9013) and the metal filter cone wall D (9014). The nano metal powder intercepted by the metal filter cone wall D (9014) is filtered out by the metal filter cone wall D (9014). 14), due to the effect of the cone shape, the nano metal powder cannot adhere to the side of the cone wall of the metal filter cone wall D (9014) under the effect of its own gravity, but naturally falls into the filter return hopper bin (904), and then further falls and is discharged through the filter return port (906) and the filter return pipe (905). Since the naturally fallen nano metal powder is directly discharged through the filter return port (906) and the filter return pipe (905), the filter return bin (902) and the filter return hopper bin (904) will not produce residual nano metal powder, so that the present invention can continuously and uninterruptedly filter and separate metal vapor and inert gas, can effectively ensure the continuous operation of the nano metal powder production system, play the role of continuously producing nano metal powder without stopping the machine, and can improve the production efficiency of the nano metal powder production system. ;

Claims

1. A nano-metal powder filtering and collecting powder self-draining device, comprising a filter return barrel wall (901), a powder filter return bin (902), a filter return hopper wall (903), a filter return hopper bin (904), a filter return pipe (905), a filter return port (906), a buffer input port (907), a filter input port (908), a filter return cover (909), a filter output pipe (9010), a connecting bolt barrel (9011), a metal cylinder filter wall H (9012), a gas filter bin D (9013), and a metal filter cone wall D (9014), a conical nanoparticle filter element (95), and a VV-shaped anti-surface adsorption gasket (96); the present invention (9) is characterized in that: the filter return barrel wall (901) and the filter return hopper wall (903) of the present invention (9) constitute a powder filter return bin (902) and a filter return hopper bin (904); a detachable conical nanoparticle filter element (95) is installed in the powder filter return bin (902); and the side wall of the filter return barrel wall (901) is provided with a buffer input port (907) and a filter input port (908).

2. The nano-metal powder filtering and collecting powder self-draining device according to claim 1, characterized in that: The buffer input port (907) is used to input the inert gas of the low-position buffer powder aggregation tank (3), and the filter input port (908) is used to input the inert gas of the mid-position condensation and filtration device (2).

3. The nano-metal powder filtering and collecting powder self-draining device according to claim 1, characterized in that: The filter return hopper wall (903) and the lower end of the filter return hopper bin (904) are provided with a filter return pipe (905) and a filter return port (906) for outputting the nano metal powder from the filter return hopper bin (904).

4. The nano-metal powder filtering and collecting powder self-draining device according to claim 1, characterized in that: The filter recycle barrel wall (901) and the upper end of the powder filter recycle bin (902) are provided with a filter recycle cover (909); a filter output pipe (9010) is provided in the middle of the filter recycle cover (909) for outputting filtered inert gas; a VV-shaped anti-surface adsorption gasket (96) is provided between the filter recycle barrel wall (901) and the filter recycle cover (909) for sealing the connection between the filter recycle barrel wall (901) and the filter recycle cover (909) to prevent leakage of inert gas; and the V-shaped end surface of the VV-shaped anti-surface adsorption gasket (96) has the function of preventing adsorption of residual nano-metal powder.

5. The nano-metal powder filtering and collecting powder self-draining device according to claim 1, characterized in that: The conical nanoparticle filter element (95) is a V-shaped cone body structure, which is composed of a metal cylindrical filter wall H (9012), a gas filter chamber D (9013), and a metal filter cone wall D (9014). The metal filter cone wall D (9014) is a V-shaped cone body formed by spraying a plurality of molybdenum particles with a diameter of 10-40 nanometers, has a plurality of gaps of 5-20 nanometers, and has a gas filter chamber D (9013) in the middle. The inert gas that has reacted with metal vapor can pass through the outside of the metal filter cone wall D (9014) into the gas filter chamber D (9013), and the nano metal powder in the inert gas is filtered outside the gas filter chamber D (9013) and the metal filter cone wall D (9014). The nano metal powder intercepted by the metal filter cone wall D (9014) is outside the wall of the metal filter cone wall D (9014).

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