Efficient filter for continuous production of aluminum powder

Abstract

The invention discloses a high-efficiency filter for continuous production of aluminum powder, and relates to the technical field of gas filtration. The aluminum powder continuous production and nitrogen circulation system comprises a tank body and a fixed cylinder, the top of the inner wall of the tank body is fixedly provided with an inner blocking cylinder, the outer diameter of the inner blocking cylinder is gradually reduced from top to bottom, and strip grooves are evenly formed in the outer side of the inner blocking cylinder. According to the device, the strip-shaped groove is formed in the gap, introduced nitrogen flows from top to bottom in the gap and penetrates through the strip-shaped groove in the flowing process, large foreign matter accidentally brought into the nitrogen is blocked, meanwhile, after moisture in the nitrogen is condensed and condensed water drops flow downwards, the condensed water drops are absorbed through the sponge ring, the moisture is condensed in the gap, it is avoided that much moisture is brought into the device, and the service life of the device is prolonged. The particles are adhered to the surface of the filtering piece after being in contact with the water drops, so that blockage is caused.

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. When nitrogen gas is filtered, when the nitrogen gas is guided, unexpected larger foreign matters are 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 in the filtering element, the particulate matters are easily adhered to the filtering element surface and blocked. SUMMARY

[0003] 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: S1, selecting aluminum liquid, feeding the aluminum liquid into a molten aluminum holding integrated furnace, so that the aluminum liquid reaches a molten state, the internal solidified part is eliminated, and the temperature of the aluminum liquid reaches the atomization powder production requirement, and then the aluminum liquid is delivered to an atomization chamber; 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; 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, and 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; 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; S5, the gas phase of the pulse bag dust collector is delivered into the nitrogen gas circulation system, and part of the nitrogen gas is returned to the centrifugal classifier to form secondary return air, part of the nitrogen gas is returned to the atomization chamber for recycling, and part of the nitrogen gas is returned to the nitrogen gas circulation system. S6, the nitrogen after the nitrogen circulation system pressurized, part of the nitrogen after heating is delivered to the atomization chamber as a source of atomization gas, the remaining nitrogen, part as pulse bag filter blowback gas source, another part as pneumatic conveying gas source.

[0004] A nitrogen circulation system, comprising: a high-pressure centrifuge, a high-efficiency filter, a cooler, a compressor, a medium-pressure gas tank, a gas tank and a high-efficiency filter tank, the high-pressure centrifuge, high-efficiency filter, cooler, compressor, medium-pressure gas tank and gas tank are connected in sequence by pipeline, the gas inlet of the high-pressure centrifuge is connected with the nitrogen outlet of the separation nitrogen generator, the medium-pressure gas tank is connected with the gas source port of the atomization chamber through pipeline, the gas phase outlet of the pulse bag dust collector is connected with the inlet of the high-efficiency filter tank, the outlet of the high-efficiency filter tank is connected with the gas inlet of the high-pressure centrifuge, the gas outlet of the high-pressure centrifuge is connected with the atomization chamber through another pipeline, and the high-pressure centrifuge is connected with the centrifugal classifier through pipeline, and the gas tank is connected with the pulse bag dust collector through pipeline.

[0005] An efficient filter for continuous production of aluminum powder, comprising: A frame body, a filter tank is installed in the inside of the frame body, the filter tank is uniformly installed in the inside of 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 at the outside of the filter tank; A primary filter mechanism and a fine filter mechanism, the primary filter mechanism and the fine filter mechanism are both installed in the inside of the filter tank, and the primary filter mechanism is located above the fine filter mechanism; 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, so that there is a gap between the inner blocking cylinder and the tank body, the nitrogen gas introduced flows from top to bottom at the gap, and passes through the slot in the process of flowing, so as to block the large foreign matters accidentally brought in the nitrogen gas, at the same time, when the water in the nitrogen gas condenses, the condensed water droplets flow downward and are absorbed by the sponge ring, so that the water is condensed at the gap, avoiding that too much water is brought in to cause condensation during the filtration treatment, so that the particulate matter adheres to the surface of the filter element after contacting the water droplets to cause 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 to guide the nitrogen gas after passing through the inner blocking cylinder to move towards the primary filtration mechanism, so as to control the flow direction of the nitrogen gas, avoiding that the particulate matter is scattered and flows at the filtration position under the driving of the nitrogen gas to affect the smooth filtration, the outer diameter of the inner guide ring gradually decreases from top to bottom.

[0006] 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 matter accumulated on the surface of the filter bag can slide and fall into the slag collecting ring under the driving of the nitrogen gas by utilizing the feature that the outer diameter of the conical cylinder gradually increases from top to bottom, so as to avoid that the filter bag is blocked due to the continuous accumulation of the particulate matter on the surface 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 center position of the top of the conical cylinder is fixedly installed with a lifting ring.

[0007] 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, an inner wall of the fixed disc is fixedly installed with a through groove pipe, a ring clamping groove is formed at 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 ring clamping groove, a guide groove is formed at 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 at the top of the arc groove ring.

[0008] 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, the inner wall of the arc groove ring is fixedly installed with a connecting cylinder, the top of the connecting cylinder is fixedly installed with a cylinder cover, and a plurality of grooves are uniformly formed at the outer side of the cylinder cover, and the inner wall of the connecting cylinder and the cylinder cover is fixedly installed with a sponge column.

[0009] The present application provides a kind of aluminum powder continuous production and nitrogen circulation system.It has the following beneficial effects: (One), the aluminum powder continuous production high-efficiency filter is used, the inner blocking cylinder is cooperated with the fixed cylinder and the fixed cylinder, so that there is a gap between the inner blocking cylinder and the tank body, the nitrogen introduced flows from top to bottom at the gap, and passes through the groove in the process of flowing, blocks the large foreign matters accidentally brought into the nitrogen, at the same time, when the water in the nitrogen condenses, the condensed water droplets flow downward, and are absorbed by the sponge ring, so that the water condenses in the gap, avoiding bringing more water, causing condensation during filtration, and causing the particles to adhere to the surface of the filter element, causing blockage.

[0010] (Two), the aluminum powder continuous production high-efficiency filter is used, the inner guide ring is cooperated with the inner blocking cylinder, after the nitrogen passes through the inner blocking cylinder, it is guided by the inner guide ring, so that it moves to the primary filter mechanism, controls the flow direction of the nitrogen, avoids the nitrogen driving the particles to flow scattered at the filtering position, and affects the smooth progress of the filtration.

[0011] (Three), the aluminum powder continuous production high-efficiency filter is used, the outer diameter of the conical cylinder gradually increases from top to bottom, so that the particles accumulated on the surface of the filter bag can slide under the driving of the nitrogen, enter the slag collecting ring for collection, and avoid continuous accumulation on the surface of the filter bag, causing the filter bag to be blocked.

[0012] (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 particles in nitrogen. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The schematic diagram of the continuous preparation system of aluminum powder is shown in the figure. Figure 2 The schematic diagram of the structure of the high efficiency filter for the continuous production of aluminum powder is shown in the figure. Figure 3 The schematic diagram of the structure of the high efficiency filter for the continuous production of aluminum powder is shown in the figure. Figure 4 The structure of the filter tank is shown in the figure. Figure 5 The structure of the filter tank is shown in the figure. Figure 6 The structure of the filter tank is shown in the figure. Figure 7 The structure of the primary filter mechanism is shown in the figure. Figure 8 The structure of the primary filter mechanism is shown in the figure. Figure 9 The structure of the primary filter mechanism is shown in the figure. Figure 10 The schematic diagram of the continuous preparation method of aluminum powder is shown in the figure.

[0014] In the figure: 1, frame; 2, filter tank; 3, primary filter mechanism; 4, fine filter 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

[0015] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only 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 labor are within the scope of protection of the present application.

[0016] First embodiment, please refer toFigures 1 to 6 With Figure 10 The application provides a technical scheme: A continuous production method of aluminum powder, comprising the following steps: S1, selecting aluminum liquid, passing the aluminum liquid into a melting and heat preservation integrated furnace, so that the aluminum liquid reaches a molten state, eliminates the internal solidified part, and the temperature of the aluminum liquid reaches the atomization powder production requirement, and then the aluminum liquid is delivered to an atomization chamber; S2, air is compressed by an air compressor, and then water is removed by a cold dryer and purified by a purifier, and then nitrogen is prepared in a separation nitrogen generator, and the nitrogen is delivered into the atomization chamber through a nitrogen circulation system; S3, in the atomization chamber, the aluminum liquid is crushed into fine aluminum liquid droplets under the guidance and jet impact force of compressed nitrogen, and then 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 a cooler under the suction of the nitrogen circulation system, so that the mixed fluid is cooled; S4, the cooled mixed fluid enters a centrifugal classifier, a cyclone classifier, a double cyclone dust collector and a pulse bag dust collector in sequence, and the aluminum powder is separated and collected according to the particle size from coarse to fine; S5, the gas phase of the pulse bag dust collector enters the nitrogen circulation system, and part of the nitrogen is returned to the centrifugal classifier to form secondary return air, part of the nitrogen is returned to the atomization chamber for recycling, and part of the nitrogen is returned to the nitrogen circulation system; S6, the nitrogen pressurized by the nitrogen circulation system, part of the nitrogen is delivered to the atomization chamber as an atomization gas source after being heated, and the remaining nitrogen is used as a back flushing gas source of the pulse bag dust collector and a pneumatic conveying gas source.

[0017] A nitrogen circulation system, comprising: a high-pressure centrifugal machine, an efficient filter, a cooler, a compressor, a medium-pressure gas storage tank, a gas storage tank and an efficient filter tank, the high-pressure centrifugal machine, the efficient filter, the cooler, the compressor, the medium-pressure gas storage tank and the gas storage tank are connected in sequence through pipelines, the air inlet of the high-pressure centrifugal machine 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 atomization 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 air inlet of the high-pressure centrifugal machine, the gas outlet of the high-pressure centrifugal machine is connected with the atomization chamber through another pipeline, and the high-pressure centrifugal machine 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.

[0018] An efficient filter for continuous production of aluminum powder, comprising: A frame body 1, a filter tank 2 is installed in the frame body 1, the filter tanks 2 are uniformly installed in 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 on the outer side of the filter tank 2; The primary filtering mechanism 3 and the fine filtering mechanism 4 are both installed inside the filter tank 2, and the primary filtering mechanism 3 is located above the fine filtering mechanism 4; 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. 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 connected 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 connection of the air inlet pipe 23 and the guide-in pipe 5 enables the nitrogen gas to be guided 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. Then, the nitrogen gas moves from top to bottom in the gap and passes through the slits evenly 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, so that the nitrogen gas passes through the slits and 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 outer side of the inner blocking cylinder 25 is evenly provided with slits. The bottom of the inner blocking cylinder 25 is fixedly installed with a fixed cylinder 28. When the nitrogen gas passes through the slits of the inner blocking cylinder 25, the slits block the foreign matters in the guided-in nitrogen gas. When the nitrogen gas contains water, the water is condensed after being guided into the tank body 21, and the sponge ring 26 is used to absorb the condensed 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 feature that the outer diameter of the inner guide ring 27 gradually decreases from top to bottom, so that the nitrogen gas is guided to be close to the primary filtering mechanism 3. The outer diameter of the inner guide ring 27 gradually decreases from top to bottom.

[0019] In the second embodiment, on the basis of the first embodiment, referring to FIG. 2, Figures 7 to 8 As shown in FIG. 2, the primary filtering mechanism 3 comprises a conical cylinder 31. The outer diameter of the conical cylinder 31 gradually increases from top to bottom. 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 guided by the inner guide ring 27 to be close to the filter bag 33 on the outer side of the conical cylinder 31. The filter bag 33 is used to preliminarily filter the particulate matters in the nitrogen gas and block the larger particulate matters, so that the particulate matters stay on the surface of the filter bag 33. Under the cooperation of the nitrogen gas flow and the feature that the outer diameter of the conical cylinder 31 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 evenly provided with a through slot. 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 slot 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.

[0020] The third embodiment, on the basis of the first and second embodiments, please refer to Figure 9 As shown, the fine filter mechanism 4 includes a fixed disc 41, the outer side of the fixed disc 41 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, the fixed disc 41 is fixedly installed with a rubber ring 43 at the annular groove, 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 surrounding under the driving of the downward flowing nitrogen gas, the particulate matter is made to pass through the arc through groove of the arc groove ring 46, and the particulate matter is guided out of the through groove pipe 42 under the guidance of the inner guide cover 45, is accumulated on the top of the fixed disc 41, 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 an arc through groove, 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.

[0021] 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 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, the nitrogen gas filtered by the primary filter mechanism 3 is guided into the inside of the through groove pipe 42 from the top of the through groove pipe 42, after the nitrogen gas enters the through groove pipe 42, passes through the cylinder cover 47 through the evenly arranged slits 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 from the bottom of the through groove pipe 42, is guided into the guide-out pipe 6 through the gas outlet pipe 24, is guided out through the guide-out pipe 6, and the outer side of the cylinder cover 47 is evenly provided with a slit, and the inner wall of the connecting cylinder 44 and the cylinder cover 47 is fixedly installed with the sponge column 48.

[0022] 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 filter mechanism 3 and the fine filter mechanism 4 in the filter tank 2, so that the nitrogen gas passes through the primary filter mechanism 3 and the fine filter mechanism 4 in turn, blocks the particulate matter in the nitrogen gas, and makes the nitrogen gas complete the filtering treatment, 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 through the guide-out pipe 6.

[0023] 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.

[0024] 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 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 to move toward the fine filtering mechanism 4.

[0025] 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 introduction pipe 6 by the air outlet pipe 24, and are guided out from the introduction 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 on the top of the cylinder cover 47 move toward all directions and pass through the arc through slots of the arc slot ring 46, and are guided out from the through slot pipe 42 by the through slot of the inner guide cover 45 and are accumulated on the top of the fixing disc 41.

[0026] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.

[0027] While the embodiments of the application have been shown and described herein, it is to be understood that the application is not limited to these embodiments. Rather, numerous modifications are possible without departing from the spirit and scope of the present application as delineated by the claims and their equivalents.

Claims

1. An efficient filter for continuous production of aluminum powder, characterized by, Include: The frame (1), the filter tank (2) is installed in the frame (1), the filter tank (2) is uniformly installed in the frame (1), the bottom of the filter tank (2) is fixedly installed with the outlet pipe (6), and the outer side of the filter tank (2) is fixedly installed with the inlet pipe (5); The primary filter mechanism (3) and the fine filter mechanism (4) are installed in the filter tank (2), and the primary filter mechanism (3) is located above the fine filter mechanism (4); Wherein, the filter tank (2) includes 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 the air outlet pipe (24), and the top of the outer side of the tank body (21) is fixedly installed with the air inlet pipe (23), the tank body (21) is communicated with the inlet pipe (5) and the outlet 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 outer diameter of the inner blocking cylinder (25) gradually decreases from top to bottom, and a plurality of grooves are uniformly formed in 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), the bottom of the outer side of the fixed cylinder (28) is fixedly connected with the inner wall of the tank body (21), and the fixed cylinder (28) and the tank body (21) are fixedly installed with a sponge ring (26).

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 cylinder (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.

3. The high-efficiency filter for continuous production of aluminum powder according to claim 2, characterized in that: The primary filter mechanism (3) includes a conical cylinder (31), the outer diameter of the conical cylinder (31) gradually increases from top to bottom, the bottom end of the conical cylinder (31) is clamped with the top end of the fine filter mechanism (4), a plurality of grooves are uniformly formed in the outer side of the conical cylinder (31), and a filter bag (33) is fixedly installed on the outer side of the conical cylinder (31).

4. The high-efficiency filter for continuous production of aluminum powder according to claim 3, characterized in that: The bottom of the outer side of the conical cylinder (31) is fixedly installed with a slag collecting ring (34), the outer side of the slag collecting ring (34) is tightly attached to the inner wall of the fixed cylinder (28), and a lifting ring (32) is fixedly installed at the center position of the top of the conical cylinder (31).

5. The high-efficiency filter for continuous production of aluminum powder according to claim 4, characterized in that: The fine filter mechanism (4) includes a fixed disc (41), the outer side of the fixed disc (41) is fixedly connected with the inner wall of the tank body (21), a plurality of grooves are formed in the outer side of the fixed disc (41), a rubber ring (43) is fixedly installed in the groove of the fixed disc (41), the fixed disc (41) is located directly below the fixed cylinder (28), and a through groove pipe (42) is fixedly installed on the inner wall of the fixed disc (41).

6. The high-efficiency filter for continuous production of aluminum powder according to claim 5, characterized in that: The top of the inner wall of the through-groove pipe (42) is provided with a ring clamping groove, the through-groove 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-groove pipe (42) is provided with a guide groove, and the inner wall of the through-groove 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, and the bottom of the arc groove ring (46) is fixedly installed with an inner guide cover (45).

7. The high-efficiency filter for continuous production of aluminum powder according to claim 6, characterized in that: 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-groove 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).

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