High-efficiency filter for continuous production of aluminum powder

Abstract

The application discloses a kind of high-efficiency filters for continuous production of aluminum powder, and is related to the technical field of gas filtration.The top of the inner wall of the tank is fixedly installed with an inner baffle cylinder, the outer diameter of the inner baffle cylinder gradually decreases from top to bottom, and a groove is uniformly formed on the outer side of the inner baffle cylinder.This aluminum powder continuous production and nitrogen circulation system uses the inner baffle cylinder in cooperation with the tank and the fixed cylinder to create a gap between the inner baffle cylinder and the tank, allowing the imported nitrogen to flow from top to bottom at the gap and pass through the groove during the flow process, blocking any large foreign objects accidentally brought in the nitrogen. At the same time, when the moisture in the nitrogen condenses, the condensed water droplets flow downward and are absorbed by the sponge ring, causing the moisture to condense at the gap and preventing the introduction of too much moisture, which would cause condensation during filtration, causing particulate matter to adhere to the surface of the filter element and cause blockage.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of gas filtration, in particular to a high-efficiency filter for continuous production of aluminum powder. BACKGROUND

[0002] Aluminum powder is an important metal powder material, has high specific surface area, good electrical conductivity, thermal conductivity and chemical activity, and is widely used in the fields of paint, metallurgy, chemical industry, military industry and the like, and its production process needs to consider particle size control, purity guarantee and safety protection, aluminum powder production methods are mainly classified according to raw material form and processing principle, mainstream methods include mechanical grinding method and atomization method, the atomization method is an important process for producing aluminum powder, and is especially suitable for preparing aluminum powder with high sphericity, good purity and excellent fluidity, the core principle is that molten aluminum liquid is broken into fine droplets through high-speed gas, and the powder is formed through rapid cooling and solidification, when the gas is used, the gas usually needs to be filtered through a filtering device to avoid that particulate matters existing in the gas damage the equipment.

[0003] When nitrogen gas is filtered, when the nitrogen gas is guided, larger foreign matters are accidentally brought in, the foreign matters are not limited, and are filtered together with dust particles, the filtering effect is affected, the filtering element is easily damaged, and after water in the nitrogen gas is prevented from condensing on the filtering element, the particulate matters are easily adhered to the filtering element surface and blocked. SUMMARY

[0004] To solve the above technical problems, the application is implemented by the following technical scheme: a continuous aluminum powder production method, which comprises the following steps:

[0005] S1, selecting aluminum liquid, feeding the aluminum liquid into a melting aluminum heat preservation integrated furnace, so that the aluminum liquid reaches a molten state, the internal solidified part is eliminated, the temperature of the aluminum liquid reaches the atomization powder production requirement, and then the aluminum liquid is delivered to an atomization chamber;

[0006] S2, air is compressed by an air compressor, then water is removed by a cold dryer, and then the air is purified by a purifier and delivered to a separation nitrogen generator to prepare nitrogen gas, and the nitrogen gas is delivered into the atomization chamber through a nitrogen gas circulation system;

[0007] S3, in the atomization chamber, the aluminum liquid is crushed into fine aluminum liquid droplets under the guidance and jet impact force of the compressed nitrogen gas, and then the aluminum liquid droplets are cooled and solidified into aluminum powder by cold nitrogen gas, then the aluminum powder is deposited at the bottom of the atomization chamber, and then the aluminum powder is sucked into a cooler under the suction action of the nitrogen gas circulation system, so that the mixed fluid is cooled;

[0008] S4, the cooled mixed fluid is sequentially delivered into a centrifugal classifier, a cyclone classifier, a double cyclone dust collector and a pulse bag dust collector, and the aluminum powder is separated and collected in stages according to the particle size from coarse to fine;

[0009] S5, the pulse cloth bag dust collector gas phase enters the nitrogen circulation system, and part of the nitrogen returns to the centrifugal classifier to form secondary return air, part of the nitrogen returns to the atomizing chamber for recycling, and part of the nitrogen returns to the nitrogen circulation system;

[0010] S6, the nitrogen pressurized by the nitrogen circulation system, part of which is heated and delivered to the atomizing chamber as an atomizing gas source, and the remaining nitrogen, part of which is used as a back flushing gas source for the pulse cloth bag dust collector, and another part is used as a pneumatic conveying gas source.

[0011] A nitrogen circulation system, comprising: a high-pressure centrifuge, an efficient filter, a cooler, a compressor, a medium-pressure gas storage tank, and a gas storage tank and an efficient filter tank, wherein the high-pressure centrifuge, the efficient filter, the cooler, the compressor, the medium-pressure gas storage tank and the gas storage tank are connected in sequence by pipelines, the gas suction port of the high-pressure centrifuge is connected with the nitrogen outlet of the separation nitrogen generator, the medium-pressure gas storage tank is connected with the gas source port of the atomizing chamber through a pipeline, the gas phase outlet of the pulse bag dust collector is connected with the inlet of the efficient filter tank, the outlet of the efficient filter tank is connected with the gas suction port of the high-pressure centrifuge, the gas outlet of the high-pressure centrifuge is connected with the atomizing chamber through another pipeline, and the high-pressure centrifuge is connected with the centrifugal classifier through a pipeline, and the gas storage tank is connected with the pulse bag dust collector through a pipeline.

[0012] An efficient filter for continuous production of aluminum powder, comprising:

[0013] A frame body, wherein a filter tank is installed inside the frame body, the filter tank is uniformly installed inside the frame body, a lead-out pipe is fixedly installed at the bottom of the filter tank, and a lead-in pipe is fixedly installed outside the filter tank;

[0014] A primary filtering mechanism and a fine filtering mechanism, wherein the primary filtering mechanism and the fine filtering mechanism are both installed inside the filter tank, and the primary filtering mechanism is located above the fine filtering mechanism;

[0015] The filter tank comprises a tank body and a tank cover, the tank cover is fixedly installed on the top of the tank body, the bottom of the tank body is fixedly installed with an air outlet pipe, the top of the outer side of the tank body is fixedly installed with an air inlet pipe, the tank body is communicated with a lead-in pipe and a lead-out pipe through the air inlet pipe and the air outlet pipe respectively, the top of the inner wall of the tank body is fixedly installed with an inner blocking cylinder, the outer diameter of the inner blocking cylinder gradually decreases from top to bottom, the inner blocking cylinder cooperates with the tank body and the fixed cylinder, there is a gap between the inner blocking cylinder and the tank body, the condensed water droplets flow from top to bottom and pass through the slot in the process of flowing, the large foreign matters accidentally brought in the nitrogen are blocked, when the water in the nitrogen is condensed, the condensed water droplets flow downward and are absorbed by the sponge ring, the water is condensed in the gap, the water is prevented from being brought in too much, the condensation is avoided during the filtration treatment, the particulate matters are prevented from adhering to the surface of the filter element after contacting the water droplets to cause the blockage, the outer side of the inner blocking cylinder is uniformly provided with a slot, the bottom of the outer side of the fixed cylinder is fixedly connected with the inner wall of the tank body, the fixed cylinder and the tank body are fixedly installed with a sponge ring, the top of the inner wall of the inner blocking cylinder is fixedly installed with an inner guide ring, the inner guide ring cooperates with the inner blocking cylinder, the nitrogen is guided by the inner guide ring after passing through the inner blocking cylinder, the nitrogen moves toward the primary filtration mechanism, the flow direction of the nitrogen is controlled, the particulate matters brought by the nitrogen are prevented from flowing in all directions at the filtration position to affect the smooth filtration, the outer diameter of the inner guide ring gradually decreases from top to bottom.

[0016] Preferably, the primary filtration mechanism comprises a conical cylinder, the outer diameter of the conical cylinder gradually increases from top to bottom, the bottom end of the conical cylinder is clamped with the top end of the fine filtration mechanism, the outer side of the conical cylinder is uniformly provided with a through slot, and the outer side of the conical cylinder is fixedly installed with a filter bag, the bottom of the outer side of the conical cylinder is fixedly installed with a slag collecting ring, the slag collecting ring cooperates with the filter bag, the particulate matters accumulated on the surface of the filter bag can slide into the slag collecting ring under the driving of the nitrogen by utilizing the feature that the outer diameter of the conical cylinder gradually increases from top to bottom, the particulate matters are prevented from continuously accumulating on the surface of the filter bag to cause the blockage of the filter bag, the outer side of the slag collecting ring is tightly combined with the inner wall of the fixed cylinder, and the top center of the conical cylinder is fixedly installed with a lifting ring.

[0017] Preferably, the fine filter mechanism comprises a fixed disc, the outer side of the fixed disc is fixedly connected with the inner wall of the tank body, and the outer side of the fixed disc is provided with an annular groove, a rubber ring is fixedly installed at the annular groove of the fixed disc, the fixed disc is located directly below the fixed cylinder, and a through groove pipe is fixedly installed on the inner wall of the fixed disc, an annular clamping groove is formed in the top of the inner wall of the through groove pipe, the through groove pipe is clamped with the bottom end of the conical cylinder through the annular clamping groove, a guide groove is formed in the bottom of the outer side of the through groove pipe, and an arc groove ring is fixedly installed on the inner wall of the through groove pipe, arc through grooves are uniformly formed in the top of the arc groove ring.

[0018] Preferably, the outer diameter of the inner guide cover gradually increases from top to bottom, the bottom of the outer side of the inner guide cover is tightly attached to the inner wall of the through groove pipe, a connecting cylinder is fixedly installed on the inner wall of the arc groove ring, a cylinder cover is fixedly installed on the top of the connecting cylinder, strip grooves are uniformly formed in the outer side of the cylinder cover, and a sponge column is fixedly installed on the inner wall of the connecting cylinder and the cylinder cover.

[0019] The application provides an aluminum powder continuous production and nitrogen circulation system.

[0020] (1) The high-efficiency filter for aluminum powder continuous production is used. The inner blocking cylinder cooperates with the tank body and the fixed cylinder, so that a gap exists between the inner blocking cylinder and the tank body. The introduced nitrogen is condensed at the gap. The condensed water droplets flow from top to bottom and pass through the strip grooves in the process of flowing, so as to block the large foreign matters accidentally brought into the nitrogen. When the water in the nitrogen is condensed, the condensed water droplets flow downward and are absorbed by the sponge ring, so that the water is condensed at the gap, and the problem of blocking caused by the adhesion of the particles to the surface of the filter element after the particles contact the water droplets during the filtration process is avoided.

[0021] (2) The high-efficiency filter for aluminum powder continuous production is used. The inner guide ring cooperates with the inner blocking cylinder. After the nitrogen passes through the inner blocking cylinder, the nitrogen is guided by the inner guide ring and moves towards the primary filter mechanism, so as to control the flow direction of the nitrogen and avoid the nitrogen driving the particles to flow in all directions at the filtration position, thereby affecting the smooth filtration.

[0022] (3) The high-efficiency filter for aluminum powder continuous production is used. The feature that the outer diameter of the conical cylinder gradually increases from top to bottom enables the particles accumulated on the surface of the filter bag to slide under the driving of the nitrogen and enter the slag collecting ring for collection, thereby avoiding the continuous accumulation of the particles on the surface of the filter bag and causing the filter bag to be blocked.

[0023] (Four), the high efficiency filter for the continuous production of aluminum powder, through the cooperation of arc groove ring and inner guide cover, when filtering, the accumulated particles are driven by nitrogen to pass through the arc groove ring, and are guided by the inner guide cover to be guided out of the through groove pipe, avoiding blockage, at the same time, the particles and nitrogen are smoothly separated, the nitrogen must pass through the sponge column and then be guided out, improving the filtering effect of the particles in the nitrogen. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic diagram of the continuous preparation system of aluminum powder of the application;

[0025] Figure 2 It is a structural schematic diagram of the high efficiency filter for the continuous production of aluminum powder of the application;

[0026] Figure 3 It is a partial structural schematic diagram of the high efficiency filter for the continuous production of aluminum powder of the application;

[0027] Figure 4 It is a structural exploded view of the filter tank of the application;

[0028] Figure 5 It is a partial structural schematic diagram of the filter tank of the application;

[0029] Figure 6 It is a partial structural exploded view of the filter tank of the application;

[0030] Figure 7 It is a structural schematic diagram of the primary filtering mechanism of the application;

[0031] Figure 8 It is a structural exploded view of the primary filtering mechanism of the application;

[0032] Figure 9 It is a structural exploded view of the fine filtering mechanism of the application;

[0033] Figure 10 It is a schematic diagram of the continuous preparation method of aluminum powder of the application.

[0034] In the figure: 1, frame body; 2, filter tank; 3, primary filtering mechanism; 4, fine filtering mechanism; 5, inlet pipe; 6, outlet pipe; 21, tank body; 22, tank cover; 23, air inlet pipe; 24, air outlet pipe; 25, inner blocking cylinder; 26, sponge ring; 27, inner guide ring; 28, fixed cylinder; 31, conical cylinder; 32, lifting ring; 33, filter bag; 34, slag collecting ring; 41, fixed disc; 42, through groove pipe; 43, rubber ring; 44, connecting cylinder; 45, inner guide cover; 46, arc groove ring; 47, cylinder cover; 48, sponge column. DETAILED DESCRIPTION

[0035] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0036] The first embodiment, please refer to Figures 1 to 6 With Figure 10 The present application provides a technical solution:

[0037] A continuous production method of aluminum powder, which consists of the following steps:

[0038] S1, select aluminum liquid, pass the aluminum liquid into the melting aluminum holding integrated furnace, so that the aluminum liquid reaches the melting state, eliminates the internal solidification part, and the temperature of the aluminum liquid reaches the atomization powder requirement, and then the aluminum liquid is delivered to the atomization chamber;

[0039] S2, the air is compressed by the air compressor, and then the water is removed by the cold dryer and purified by the purifier, and then delivered to the separation nitrogen generator to prepare nitrogen, and the nitrogen is delivered into the atomization chamber through the nitrogen circulation system;

[0040] S3, in the atomization chamber, the aluminum liquid is pulverized into fine aluminum liquid droplets under the guidance and jet impact force of compressed nitrogen, and then cooled and solidified into aluminum powder by cold nitrogen, and then the aluminum powder settles at the bottom of the atomization chamber, and then the aluminum powder is sucked into the cooler under the suction of the nitrogen circulation system, so that the mixed fluid is cooled;

[0041] S4, the cooled mixed fluid enters the centrifugal classifier, cyclone classifier, double cyclone dust collector and pulse bag dust collector in turn, and the aluminum powder is separated and collected according to the particle size from coarse to fine;

[0042] S5, the gas phase of the pulse bag dust collector enters the nitrogen circulation system, and after the nitrogen is pressurized, part of the nitrogen returns to the centrifugal classifier to form secondary return air, part of the nitrogen returns to the atomization chamber for recycling, and part of the nitrogen returns to the nitrogen circulation system;

[0043] S6, the nitrogen pressurized by the nitrogen circulation system, part of the nitrogen is delivered to the atomization chamber after heating as atomization gas source, the remaining nitrogen, part of which is used as the back blowing gas source of the pulse bag dust collector, and the other part is used as the pneumatic conveying gas source.

[0044] A nitrogen circulation system, comprising: a high-pressure centrifuge, a high-efficiency filter, a cooler, a compressor, a medium-pressure gas storage tank, and a gas storage tank and high-efficiency filter tank, the high-pressure centrifuge, high-efficiency filter, cooler, compressor, medium-pressure gas storage tank and gas storage tank being connected in sequence by pipelines, the gas inlet of the high-pressure centrifuge being connected with the nitrogen outlet of a separation nitrogen generator, the medium-pressure gas storage tank being connected with the gas source inlet of an atomization chamber by a pipeline, the gas phase outlet of a pulse bag dust collector being connected with the inlet of the high-efficiency filter tank, the outlet of the high-efficiency filter tank being connected with the gas inlet of the high-pressure centrifuge, the gas outlet of the high-pressure centrifuge being connected with the atomization chamber by another pipeline, and the high-pressure centrifuge being connected with a centrifugal classifier by a pipeline, and the gas storage tank being connected with the pulse bag dust collector by a pipeline.

[0045] An efficient filter for continuous production of aluminum powder, comprising:

[0046] A frame body 1, a filter tank 2 is installed in the inside of the frame body 1, the filter tank 2 is uniformly installed in the inside of the frame body 1, a lead-out pipe 6 is fixedly installed at the bottom of the filter tank 2, and a lead-in pipe 5 is fixedly installed at the outside of the filter tank 2;

[0047] A primary filtering mechanism 3 and a fine filtering mechanism 4, the primary filtering mechanism 3 and the fine filtering mechanism 4 are both installed in the inside of the filter tank 2, and the primary filtering mechanism 3 is located above the fine filtering mechanism 4;

[0048] The filter tank 2 comprises a tank body 21 and a tank cover 22, the tank cover 22 is fixedly installed on the top of the tank body 21, the bottom of the tank body 21 is fixedly installed with an air outlet pipe 24, and the top of the outer side of the tank body 21 is fixedly installed with an air inlet pipe 23, the tank body 21 is communicated with the guide-in pipe 5 and the guide-out pipe 6 through the air inlet pipe 23 and the air outlet pipe 24 respectively, the top of the inner wall of the tank body 21 is fixedly installed with an inner blocking cylinder 25, the nitrogen gas is guided into the inside of the tank body 21 through the air inlet pipe 23 and the guide-in pipe 5, the nitrogen gas firstly enters the gap between the tank body 21 and the inner blocking cylinder 25, then the nitrogen gas in the gap moves from top to bottom and passes through the strip groove uniformly arranged on the outer side of the inner blocking cylinder 25 and the outer diameter of the inner blocking cylinder 25 gradually decreases from top to bottom, and in the process of moving, the nitrogen gas enters the inside of the inner blocking cylinder 25, the nitrogen gas is filtered by the primary filtering mechanism 3 and the fine filtering mechanism 4, the outer diameter of the inner blocking cylinder 25 gradually decreases from top to bottom, the strip groove is uniformly arranged on the outer side of the inner blocking cylinder 25, the bottom of the inner blocking cylinder 25 is fixedly installed with a fixed cylinder 28, when the nitrogen gas passes through the strip groove of the inner blocking cylinder 25, the strip groove blocks the foreign matters existing in the guided-in nitrogen gas, at the same time, when the nitrogen gas contains water, the water is condensed after being guided into the tank body 21, the sponge ring 26 is used to absorb the water, the bottom of the outer side of the fixed cylinder 28 is fixedly connected with the inner wall of the tank body 21, the sponge ring 26 is fixedly installed between the fixed cylinder 28 and the tank body 21, the top of the inner wall of the inner blocking cylinder 25 is fixedly installed with an inner guide ring 27, after the nitrogen gas passes through the inner blocking cylinder 25, the nitrogen gas is guided by the characteristic that the outer diameter of the inner guide ring 27 gradually decreases from top to bottom, so that the nitrogen gas is close to the primary filtering mechanism 3, and the outer diameter of the inner guide ring 27 gradually decreases from top to bottom.

[0049] The second embodiment is based on the first embodiment, referring to Figures 7 to 8 As shown in the figure, the primary filtering mechanism 3 comprises a conical cylinder 31, the outer diameter of the conical cylinder 31 gradually increases from top to bottom, and the bottom end of the conical cylinder 31 is clamped with the top end of the fine filtering mechanism 4, the nitrogen gas passing through the inner blocking cylinder 25 is close to the filter bag 33 on the outer side of the conical cylinder 31 under the guidance of the inner guide ring 27, the filter bag 33 is used to preliminarily filter the particulate matters in the nitrogen gas, and blocks the larger particulate matters so that they stay on the surface of the filter bag 33, under the cooperation of the nitrogen gas flow and the conical cylinder 31 whose outer diameter gradually increases from top to bottom, the particulate matters on the surface of the filter bag 33 move downward and fall into the inside of the slag collecting ring 34, the outer side of the conical cylinder 31 is uniformly provided with a through groove, the outer side of the conical cylinder 31 is fixedly installed with the filter bag 33, the bottom of the outer side of the conical cylinder 31 is fixedly installed with the slag collecting ring 34, the outer side of the slag collecting ring 34 is tightly combined with the inner wall of the fixed cylinder 28, part of the particulate matters and the nitrogen gas pass through the filter bag 33, enter the inside of the conical cylinder 31 through the through groove of the conical cylinder 31, and move to the fine filtering mechanism 4, the center position of the top of the conical cylinder 31 is fixedly installed with a lifting ring 32.

[0050] The third embodiment is based on the first and second embodiments, referring to Figure 9As shown, the fine filtering mechanism 4 includes a fixed disc 41, the outer side of which is fixedly connected with the inner wall of the tank body 21, and the outer side of the fixed disc 41 is provided with an annular groove, and the annular groove of the fixed disc 41 is fixedly installed with a rubber ring 43, the fixed disc 41 is located directly below the fixed cylinder 28, and the inner wall of the fixed disc 41 is fixedly installed with a through-groove pipe 42, the top of the inner wall of the through-groove pipe 42 is provided with an annular clamping groove, the through-groove pipe 42 is clamped with the bottom end of the conical cylinder 31 through the annular clamping groove, the bottom of the outer side of the through-groove pipe 42 is provided with a guide groove, the particulate matter that cannot pass through the sponge column 48 is moved to the periphery under the driving of the downward flowing nitrogen gas, so that the particulate matter accumulated on the top of the cylinder cover 47 passes through the arc through-grooves of the arc groove ring 46, and is guided by the inner guide cover 45 to be guided out of the through-groove pipe 42, and is accumulated on the top of the fixed disc 41, and the inner wall of the through-groove pipe 42 is fixedly installed with the arc groove ring 46, the top of the arc groove ring 46 is uniformly provided with arc through-grooves, and the arc groove ring 46 is located above the guide groove, and the bottom of the arc groove ring 46 is fixedly installed with the inner guide cover 45.

[0051] The outer diameter of the inner guide cover 45 gradually increases from top to bottom, and the bottom of the outer side of the inner guide cover 45 is tightly attached to the inner wall of the through-groove pipe 42, the inner wall of the arc groove ring 46 is fixedly installed with a connecting cylinder 44, the top of the connecting cylinder 44 is fixedly installed with a cylinder cover 47, and the nitrogen gas filtered by the primary filtering mechanism 3 is guided into the inside of the through-groove pipe 42 from the top of the through-groove pipe 42, and after the nitrogen gas enters the through-groove pipe 42, it passes through the cylinder cover 47 through the slits uniformly provided on the outer side of the cylinder cover 47, contacts the sponge column 48, and is filtered again by the porous structure of the sponge material of the sponge column 48, so that the nitrogen gas removes the particulate matter in the process of passing through the sponge column 48, is guided out of the bottom of the through-groove pipe 42, and is guided into the guide-out pipe 6 through the gas outlet pipe 24, is guided out of the guide-out pipe 6, and the outer side of the cylinder cover 47 is uniformly provided with slits, and the inner wall of the connecting cylinder 44 and the cylinder cover 47 is fixedly installed with the sponge column 48.

[0052] In use, the nitrogen gas that needs to be filtered and dedusted is guided into the filter tank 2 through the guide-in pipe 5, and then passes through the primary filtering mechanism 3 and the fine filtering mechanism 4 in the filter tank 2, so that the nitrogen gas passes through the primary filtering mechanism 3 and the fine filtering mechanism 4 in turn to block the particulate matter in the nitrogen gas, so that the nitrogen gas is filtered, and finally the filtered nitrogen gas is guided into the guide-out pipe 6 from the bottom of the filter tank 2, and is guided out of the guide-out pipe 6.

[0053] In the filter tank 2, by the connection of the air inlet pipe 23 with the introduction pipe 5, the nitrogen gas is introduced into the inside of the tank body 21 from the air inlet pipe 23, so that the nitrogen gas firstly enters the gap between the tank body 21 and the inner blocking cylinder 25, and then moves from top to bottom in the gap and passes through the strip slots uniformly arranged on the outer side of the inner blocking cylinder 25, and enters the inside of the inner blocking cylinder 25, and is filtered by the primary filtering mechanism 3 and the fine filtering mechanism 4, and meanwhile, after the nitrogen gas passes through the inner blocking cylinder 25, the nitrogen gas is guided by the gradually decreasing outer diameter of the inner guide ring 27 from top to bottom, so that the nitrogen gas approaches the primary filtering mechanism 3, and when the nitrogen gas passes through the strip slots, the foreign matters in the introduced nitrogen gas are blocked by the strip slots, and meanwhile, when the nitrogen gas contains water, the water is condensed after being introduced into the tank body 21, and the accumulated water is absorbed by the sponge ring 26.

[0054] In the primary filtering mechanism 3, the nitrogen gas passing through the inner blocking cylinder 25 approaches the filter bag 33 on the outer side of the conical cylinder 31 under the guidance of the inner guide ring 27, and the filter bag 33 preliminarily filters the particulate matters in the nitrogen gas, and blocks the larger particulate matters so as to make them stay on the surface of the filter bag 33, and under the cooperation of the nitrogen gas flow and the gradually increasing outer diameter of the conical cylinder 31 from top to bottom, the particulate matters on the surface of the filter bag 33 move downward and fall into the inside of the slag collecting ring 34, and part of the particulate matters and the nitrogen gas pass through the filter bag 33 and enter the inside of the conical cylinder 31 through the through slot of the conical cylinder 31, and move toward the fine filtering mechanism 4.

[0055] In the fine filtering mechanism 4, the nitrogen gas filtered by the primary filtering mechanism 3 is introduced into the inside of the through slot pipe 42 from the top of the through slot pipe 42, and after the nitrogen gas enters the through slot pipe 42, it passes through the strip slots uniformly arranged on the outer side of the cylinder cover 47, contacts the sponge column 48, and the sponge column 48 filters the dust particulate matters in the nitrogen gas again by the porous structure of the sponge material, so that the particulate matters are removed in the process that the nitrogen gas passes through the sponge column 48, and are guided out from the bottom of the through slot pipe 42 and introduced into the guide-out pipe 6 from the air outlet pipe 24, and are guided out from the guide-out pipe 6, and the particulate matters that cannot pass through the sponge column 48 move toward all directions under the driving of the downward flowing nitrogen gas, so that the particulate matters pass through the arc through slots of the arc slot ring 46, and are guided out from the through slot pipe 42 under the guidance of the inner guide cover 45, and are accumulated on the top of the fixing disc 41.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An efficient filter for continuous production of aluminum powder, characterized by, Include: The frame (1), the inside of the frame (1) is installed with filter tank (2), the filter tank (2) is evenly installed in the inside of frame (1), the bottom of filter tank (2) is fixedly installed with lead-out pipe (6), and the outside of filter tank (2) is fixedly installed with lead-in pipe (5); The primary filter mechanism (3) and the fine filter mechanism (4) are installed in the inside of filter tank (2), and the primary filter mechanism (3) is located above the fine filter mechanism (4); Wherein, the filter tank (2) includes tank body (21) and tank cover (22), the tank cover (22) is fixedly installed on the top of tank body (21), the bottom of tank body (21) is fixedly installed with air outlet pipe (24), and the top of the outside of tank body (21) is fixedly installed with air inlet pipe (23), the tank body (21) is communicated with lead-in pipe (5) and lead-out pipe (6) through air inlet pipe (23) and air outlet pipe (24) respectively, the top of the inner wall of tank body (21) is fixedly installed with inner blocking cylinder (25), the outer diameter of inner blocking cylinder (25) gradually decreases from top to bottom, and a plurality of grooves are evenly formed in the outer side of inner blocking cylinder (25), the bottom of inner blocking cylinder (25) is fixedly installed with fixed cylinder (28), the bottom of the outer side of fixed cylinder (28) is fixedly connected with the inner wall of tank body (21), sponge ring (26) is fixedly installed between fixed cylinder (28) and tank body (21), there is a gap between inner blocking cylinder (25) and tank body (21), so that the condensed water flows from top to bottom; The primary filter mechanism (3) includes conical cylinder (31), the outer diameter of conical cylinder (31) gradually increases from top to bottom, and the bottom end of conical cylinder (31) is clamped with the top end of fine filter mechanism (4), a plurality of grooves are evenly formed in the outer side of conical cylinder (31), and filter bag (33) is fixedly installed on the outer side of conical cylinder (31), and conical cylinder (31) is located in the inside of inner blocking cylinder (25); The bottom of the outer side of conical cylinder (31) is fixedly installed with slag collecting ring (34), the outer side of slag collecting ring (34) is tightly attached to the inner wall of fixed cylinder (28), and the center position of the top of conical cylinder (31) is fixedly installed with lifting ring (32); The fine filter mechanism (4) includes fixed disc (41), the outer side of fixed disc (41) is fixedly connected with the inner wall of tank body (21), a plurality of grooves are formed in the outer side of fixed disc (41), rubber ring (43) is fixedly installed in the groove of fixed disc (41), fixed disc (41) is located directly below fixed cylinder (28), and through groove pipe (42) is fixedly installed on the inner wall of fixed disc (41); The top of the inner wall of the through slot pipe (42) is provided with a ring clamping groove, the through slot pipe (42) is clamped with the bottom end of the conical barrel (31) through the ring clamping groove, the bottom of the outer side of the through slot pipe (42) is provided with a guide groove, and the inner wall of the through slot pipe (42) is fixedly installed with an arc groove ring (46); the top of the arc groove ring (46) is uniformly provided with an arc through groove, and the arc groove ring (46) is located above the guide groove; the bottom of the arc groove ring (46) is fixedly installed with an inner guide cover (45). The outer diameter of the inner guide cover (45) gradually increases from top to bottom, the bottom of the outer side of the inner guide cover (45) is tightly attached to the inner wall of the through slot pipe (42), the inner wall of the arc groove ring (46) is fixedly installed with a connecting barrel (44), the top of the connecting barrel (44) is fixedly installed with a barrel cover (47), the outer side of the barrel cover (47) is uniformly provided with a slot, and the inner wall of the connecting barrel (44) and the barrel cover (47) is fixedly installed with a sponge column (48); the gas is guided out from the bottom of the connecting barrel (44) after passing through the sponge column (48).

2. The high-efficiency filter for continuous production of aluminum powder according to claim 1, characterized in that: The top of the inner wall of the inner blocking barrel (25) is fixedly installed with an inner guide ring (27), and the outer diameter of the inner guide ring (27) gradually decreases from top to bottom.

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