Dust removal device for metal powder production

Abstract

The application relates to the technical field of dust removal equipment, in particular to a dust removal device for metal powder production, which comprises a shell, a filtering chamber and a cleaning device, a plurality of vertical filter bags are arranged in the filtering chamber, the two ends of the filter bags are open, the upper and lower ends of the filter bags are fixed to the filtering chamber respectively, the diameter of the middle filtering part of the filter bag is larger than that of the two fixed parts, the cleaning device is arranged in each filter bag, and the cleaning device comprises spiral fins, an upper sealing element and a lower sealing element; the dust removal device for metal powder production is characterized in that the diameter of the filtering part of the filter bag is larger than that of the two fixed parts, the concave filter bag is in contact with the spiral fins during cleaning, the inner surface impurities of the filter bag are scraped, the filter bag and the spiral fins directly form a spiral channel, the impurities can be quickly discharged, and diffusion is prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dust removal equipment, in particular to a dust removal device for metal powder production. BACKGROUND

[0002] The dust collector is used for capturing and separating dust particles suspended in air or gas. In the production and manufacturing of metallurgy, casting, cement building materials, machinery, light industry, power and other industries, it is necessary to eliminate dust pollution, protect the environment and improve the working conditions. Therefore, the application of dust collectors is also increasing. There are many types of dust collectors, the most commonly used dust collectors include cyclone dust collector, filter bag dust collector, electric dust collector, wet dust collector, etc. Especially in the process of magnesium powder processing, fine dust is produced, which is easy to explode under certain conditions.

[0003] The Chinese patent application file with the application publication number CN105032059A discloses an anti-explosion dust collector, which solves the problem that the existing dust collector is easy to explode during use. The improved anti-explosion dust collector includes a dust removal box and a dust storage box located below the dust removal box, the dust removal box is fixedly connected with the dust storage box, the dust removal box includes a dust removal cavity and a clean gas cavity, a filter bag is fixedly connected in the dust removal cavity, a primary air inlet and a primary air outlet are formed in the dust storage box and communicate with the inner cavity of the dust storage box, an anti-explosion assembly is arranged in the dust collector, the anti-explosion assembly includes a first anti-explosion baffle, the first anti-explosion baffle is located in the dust storage box and is arranged towards the primary air inlet, the first anti-explosion baffle separates the upper part of the inner cavity of the dust storage box into an air inlet cavity and an air outlet cavity, the primary air inlet communicates with the air inlet cavity, the primary air outlet communicates with the air outlet cavity, and an explosion relief sheet for preventing explosion of the dust collector is further arranged in the dust storage box.

[0004] However, in the related technology, it is difficult to clean the filter device in time. When the filter device is cleaned, the fine dust particles are easy to be raised and scattered into the air due to the accumulation of dust in the equipment for a long time. The raised dust is difficult to collect and clean when the dust removal is performed, which causes the problem of incomplete cleaning and cleaning difficulty. SUMMARY

[0005] The present application provides a dust removal device for metal powder production, which aims to solve the problem that the dust is easy to be raised and scattered during cleaning in the related technology due to the accumulation of dust.

[0006] The dust removal device for metal powder production of the present application comprises a shell, a filtering chamber, a plurality of vertically arranged filter bags, open ends of the filter bags, upper and lower ends of the filter bags being fixed to the filtering chamber respectively, a diameter of the middle filtering part of the filter bag being larger than that of the fixed part at both ends, a cleaning device arranged in the filter bag, the cleaning device comprising a spiral blade, an upper sealing member and a lower sealing member for sealing the upper and lower ends of the filter bag, the upper end of the filter bag being opened and the lower end being sealed during dust removal, the upper sealing member sealing the upper end of the filter bag and the lower sealing member opening the lower end of the filter bag during cleaning, the spiral blade being arranged in the filter bag along the axial direction of the filter bag, a driving assembly, the driving assembly enabling the spiral blade to rotate around the axial line of the filter bag, and a suction device, the suction end of the suction device being communicated with the lower end of the filter bag, the filter bag being reversely sucked during cleaning, so that the filter bag changes from the outward convex state to the inward concave state and is tightly attached to the spiral blade.

[0007] The effect of the present application lies in that the diameter of the filtering part of the filter bag is larger than that of the fixed part at both ends, the filter bag assumes two states of outward convexity and inward concavity during filtering and cleaning respectively, the gas in the filter bag can be normally filtered without being affected by the spiral blade during filtering, the filter bag assumes the inward concave state during cleaning, the impurities on the surface of the filter bag fall off, the inward concave filter bag is in contact with the spiral blade with the cooperation of the spiral blade, the impurities on the inner surface of the filter bag are scraped off, a spiral channel is formed between the filter bag and the spiral blade, the impurities can be quickly discharged and prevented from spreading, and the suction device quickly blows off the impurities on the filter bag to prevent the impurities from adhering to the holes of the filter bag and being difficult to clean.

[0008] Preferably, a lever is arranged on the filtering chamber, the spiral blade is flexible, and the lever is against the lower side of the spiral blade during cleaning, so that the lever elongates the spiral blade upward along the rotation axis from the lower end, and the effect of the present application lies in that the spiral blade is set as a flexible blade, the spiral blade vibrates during cleaning to prevent the impurities from being accumulated on the surface of the spiral blade and being difficult to clean.

[0009] Preferably, the outer edge of the spiral blade is made of flexible material, and the effect of the present application lies in that the spiral blade is made of flexible material, so that the spiral blade does not scratch the inner surface of the filter bag during cleaning, and the service life of the filter bag is increased.

[0010] Preferably, the filtering chamber comprises two upper and lower support plates, the filtering chamber is formed between the two support plates, the two support plates are provided with upper and lower corresponding through holes, the lower side of the through hole is provided with a ring flange for mounting the filter bag, the ring flanges of the two support plates are respectively provided with upper and lower support rods, the driving assembly comprises a driving shaft and a driving source, the driving source is arranged on the lower support rod, and the driving shaft is rotatably connected to the upper and lower support rods at both ends.

[0011] Preferably, the lower end of the spiral blade is fixed to the driving shaft, and the push rod is arranged on the lower side of the upper supporting rod; during cleaning, the push rod abuts against the lower side of the spiral blade, and the push rod makes the spiral blade stretch upwards along the axis of rotation from the lower end; after overcoming the elastic force of the push rod, the spiral blade restores to the original length; the effect of this is that the spiral blade is vibrated by arranging the flexible push rod, and the deposition of impurities on the spiral blade is prevented.

[0012] Preferably, the upper sealing member comprises a sealing plate and a rotating rod; the rotating rod is arranged in a circumferential array along the axis of the ring flange; a sector-shaped sealing plate is arranged on one side along the axis of the rotating rod; the upper end surface of the driving shaft is rough; and the upper end surface of the driving shaft abuts against the rotating rod, and when the driving shaft rotates, the rotating rod is driven to make the sealing plate rotate from the vertical state to the horizontal state, and the sealing plate is lapped on the adjacent rotating rod.

[0013] Preferably, the lower sealing member is coaxially arranged with the ring flange on the lower side and slides along the axis of the ring flange; the lower sealing member is conical; the driving shaft is screw-connected with the lower sealing member; and during cleaning, the driving shaft makes the lower sealing member move downwards; the effect of this is that the upper surface of the lower sealing member is arranged in a conical shape to ensure that impurities are not accumulated on the lower sealing member during cleaning.

[0014] Preferably, the lower side of the filtering chamber is provided with a collecting cavity, the lower end of the filter bag is communicated with the collecting cavity, and the suction end of the suction device is connected to the lower end of the collecting cavity; the effect of this is that the lower end of the filter bag is connected with the collecting cavity by arranging the collecting cavity, and the suction device can simultaneously suck air from multiple filter bags to quickly collect impurities in the multiple filter bags.

[0015] Preferably, the circumferential surface of the lower sealing member in contact with the filter bag is made of flexible material.

[0016] Preferably, the front end of the push rod is made of flexible material.

[0017] By adopting the above technical solutions, the present application has the following beneficial effects:

[0018] 1. By setting the diameter of the filtering area of the filter bag to be greater than the diameter of the fixed area at both ends, the filter bag assumes two shapes, i.e., an outward convex shape and an inward concave shape, during filtering and cleaning; during filtering, the filter bag assumes an outward convex shape, and the gas in the bag can be normally filtered without being disturbed by the spiral blade; and during cleaning, the filter bag assumes an inward concave shape, and the impurities accumulated on the surface of the bag fall off and cooperate with the spiral blade to make the inward concave filter bag contact the spiral blade to scrape off the impurities on the inner surface of the filter bag; at the same time, a spiral channel is formed between the filter bag and the spiral blade to rapidly discharge the impurities and prevent the impurities from spreading; and the suction device cooperates to rapidly blow off the impurities on the filter bag to prevent the impurities from adhering to the holes of the filter bag and being difficult to clean.

[0019] 2. By setting the spiral blade as an elastic blade and the circumferential surface of the lower seal in contact with the filter bag as a flexible material, the spiral blade is vibrated during cleaning to prevent impurities from accumulating on the surface of the spiral blade and being difficult to clean. The seal reduces friction with the fixed end of the filter bag when moving up and down, preventing damage to the filter bag. The flexible contact surface can provide a better sealing effect, ensuring sealing during filtration.

[0020] 3. By setting a flexible lever, the spiral blades can vibrate up and down intermittently during cleaning, preventing impurities from being deposited on the spiral blades and not being collected quickly downward along the spiral channel. The outer edge of the spiral blades is set to a flexible material, so that the spiral blades have a certain deformation at the place where they contact the filter bag during cleaning, which will not scratch the inner surface of the filter bag and increase the service life of the filter bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the dust collector.

[0022] Figure 2 It is a partial cross-sectional view of the overall structure of the dust collector.

[0023] Figure 3 It is a schematic diagram of the internal structure of the filter chamber.

[0024] Figure 4 It is a schematic diagram of the internal structure of the filter bag.

[0025] Figure 5 It is a schematic diagram of the lower seal structure.

[0026] Figure 6 yes Figure 5 Enlarged view of part A.

[0027] Figure 7 It is a schematic diagram of the upper seal structure.

[0028] Figure 8 yes Figure 7 Magnified view of part B.

[0029] Figure 9 It is a schematic diagram of the side of the overall structure of the dust collector.

[0030] Figure 10 It is a schematic diagram of the overall structure of the spiral blade.

[0031] Reference numerals:

[0032] 1. Housing; 11. Filter chamber; 12. Push rod; 13. Support plate; 14. Through hole; 15. Annular flange; 16. Upper support rod; 17. Lower support rod; 18. Collection chamber; 2. Filter bag; 3. Spiral blade; 4. Cleaning device; 41. Upper seal; 411. Sealing plate; 412. Rotating rod; 42. Lower seal; 43. Drive assembly; 431. Drive shaft; 432. Drive source; 5. Suction device. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0034] like Figures 1 to 10 As shown, a dust removal device for metal powder production of the present invention includes a shell 1, a filter chamber 11 and a cleaning device 4. A plurality of vertical filter bags 2 are arranged in the filter chamber 11. In this embodiment, five filter bags 2 are described as an example. The upper and lower ends of the filter bags 2 are open, and the upper and lower ends of the filter bags 2 are respectively fixed on the filter chamber 11. The diameter of the middle filtering part of the filter bag 2 is larger than the fixed parts at both ends. A cleaning device 4 is provided in each filter bag 2. The cleaning device 4 includes a spiral sheet 3, an upper seal 41 and a lower seal 42 for sealing the upper and lower ends of the filter bag 2. During dust removal, the upper seal 41 at the upper end of the filter bag 2 is opened, and the lower seal 42 at the lower end of the filter bag 2 is closed. The exhaust gas enters the filter bag 2 from the upper openings of the five filter bags 2 through the opened upper seal 41. The filtering part of the filter bag 2 is in a convex state during filtering, and the exhaust gas is discharged after being filtered by the filter bag 2.

[0035] The spiral blade 3 rotates in the filter bag 2 under the drive of the drive assembly 43. During the rotation, the spiral blade 3 scrapes off the metal powder attached to the inner wall of the filter bag 2. When the metal powder at the lower end of the filter bag 2 needs to be cleaned, the upper seal 41 is closed and the lower seal 42 is opened, and the metal powder falls into the collecting chamber 18. At this time, the spiral blade 3 continues to rotate to scrape off the metal powder attached to the inner wall of the lower end of the filter bag 2.

[0036] like Figures 3 to 6 As shown, the driving component 43 includes a driving shaft 431 and a driving source 432. The driving source 432 is preferably a motor, etc. The lower end of the spiral piece 3 is fixed on the driving shaft 431. The driving component 43 causes the spiral piece 3 to rotate around the axis of the filter bag 2. The suction end of the suction device 5 is connected to the lower end of the filter bag 2. The suction device 5 is preferably a negative pressure generator. During cleaning, the suction device 5 generates negative pressure to suck back the filter bag 2. The upper sealing member 41 seals the upper end of the filter bag 2, and the lower sealing member 42 opens the lower end of the filter bag 2. The suction device 5 changes the five filter bags 2 from a convex state to a concave state, so that the inner wall of the filter bag 2 is close to the spiral piece 3. Under the action of the driving component 43, the spiral piece 3 rotates to clean the filter bag 2.

[0037] As Figures 2 to 9 shown, the filter chamber 11 includes two support plates 13, both of which are arranged on the shell 1, and the filter chamber 11 is formed between the two support plates 13. The two support plates 13 are provided with corresponding through holes 14, and the lower side of the through hole 14 is provided with a ring flange 15 for mounting the filter bag 2. The inner diameter of the ring flange 15 is the same as the diameter of the through hole 14, and the ring flange 15 extends downward along the through hole 14. The ring flange 15 is respectively provided with an upper support rod 16 and a lower support rod 17. The upper support rod 16 and the lower support rod 17 pass through the axis of the ring flange 15, and the upper support rod 16 and the lower support rod 17 are provided with mounting holes at the axis. The driving source 432 is arranged on the lower support rod 17, and the driving source 432 drives the rotation of the driving shaft 431. The driving shaft 431 is coaxially arranged with the filter bag 2, and the driving shaft 431 is arranged in the mounting holes of the upper support rod 16 and the lower support rod 17. The two ends of the driving shaft 431 are respectively rotatably connected with the upper support rod 16 and the lower support rod 17.

[0038] As Figures 4 to 9 shown, the cleaning device 4 includes a spiral piece 3. The spiral piece 3 is a spiral piece without a central axis, and has elasticity. Preferably, the spiral piece 3 is made of metal elastic sheet. The lower end of the spiral piece 3 is fixedly connected with the driving shaft 431, and there is a gap between the lower end of the spiral piece 3 and the lower support rod 17. The push rod 12 is arranged on the lower side of the upper support rod 16. The push rod 12 is preferably "L" shaped, and the horizontal section of the push rod 12 points to the driving shaft 431. The front end of the push rod 12 is flexible, and the flexible material is preferably rubber. When cleaning, the push rod 12 makes the spiral piece 3 stretch upward along the axis of rotation from the lower end during rotation. When the spiral piece 3 stretches, it overcomes the elasticity of the push rod 12, causing the horizontal section of the push rod 12 to deform. After the spiral piece 3 is separated from the push rod 12, it returns to its original length. The outer edge of the spiral piece 3 is made of flexible material, preferably rubber, which can prevent the spiral piece 3 from scratching the inner wall of the filter bag 2 during cleaning, thereby protecting the integrity of the filter bag 2.

[0039] The rotation of the spiral piece 3 is powered by the driving source 432. When the spiral piece 3 rotates under the drive of the driving shaft 431, its design without a central axis makes it more flexible to adapt to the shape of the filter bag 2, thereby more effectively cleaning the inner wall of the filter bag 2. At the same time, since the spiral piece 3 has elasticity, it can deform when encountering protrusions or uneven parts of the inner wall of the filter bag 2, avoiding hard scraping of the filter bag 2 and further protecting the integrity of the filter bag 2.

[0040] The arrangement of the poking rod 12 is to further enhance the cleaning effect. During the rotation of the spiral blade 3, the horizontal section of the poking rod 12 will be in contact with the outer edge of the spiral blade 3, causing the spiral blade 3 to elongate axially while rotating, thereby cleaning the inner wall of the filter bag 2 more deeply. The flexible design of the front end of the poking rod 12 can reduce the impact of the spiral blade 3 on the poking rod 12 during elongation, prolonging the service life of the poking rod 12. The design of the cleaning device 4 fully considers the protection of the filter bag 2 and the improvement of the cleaning effect. Through the elastic design of the spiral blade 3 and the auxiliary action of the poking rod 12, effective cleaning of the inner wall of the filter bag 2 is achieved, while avoiding damage to the filter bag 2.

[0041] As shown in Figures 4 to 9 The cleaning device 4 also includes an upper sealing member 41 and a lower sealing member 42. The upper sealing member 41 includes a sealing plate 411 and a rotating rod 412. The rotating rod 412 is arranged in a diverging manner along the axis of the annular flange 15. One end of the rotating rod 412 is provided with a protruding portion in the center of the upper support rod 16, and the other end is rotatably arranged in the annular flange 15. A fan-shaped sealing plate 411 is arranged on one side along the axis of the rotating rod 412. The upper end surface of the drive shaft 431 is rough, and the upper end surface of the drive shaft 431 abuts against the rotating rod 412. During cleaning, the drive shaft 431 rotates clockwise in the top view. The drive shaft 431 causes the rotating rod 412 to rotate, causing the sealing plate 411 to rotate from a vertical state to a horizontal state. The sealing plate 411 is lapped on the adjacent rotating rod 412, and multiple sealing plates 411 are closed to form a complete circular plate, blocking the upper end of the filter bag 2. The lower sealing member 42 is coaxially arranged with the lower annular flange 15 and slides along the axis of the annular flange 15. The lower sealing member 42 is conical, and the upper end surface of the lower sealing member 42 is conical. The drive shaft 431 is screw-connected with the lower sealing member 42. During cleaning, the drive shaft 431 rotates clockwise in the top view. The drive shaft 431 causes the lower sealing member 42 to move downward to be screw-connected. At this time, the lower bottom surface of the lower sealing member 42 is lower than the lower annular flange 15, and the lower end of the filter bag 2 is in an open state. The conical surface of the lower sealing member 42 can quickly discharge impurities.

[0042] The part of the lower sealing member 42 in contact with the lower end of the filter bag 2 is made of flexible material. The flexible material is preferably rubber material. After the lower end of the lower sealing member 42 is made of rubber material, the damage to the filter bag 2 during the upward and downward movement of the lower sealing member 42 is effectively reduced. After being made of rubber material, the sealing effect of the lower sealing member 42 during filtration is effectively improved.

[0043] As shown in Figures 1 to 4As shown, the lower side of the filtering chamber 11 is provided with a collection cavity 18, which is inverted conical, the lower ends of the five filter bags 2 are communicated with the collection cavity 18, and the suction end of the suction device 5 is connected to the lower end of the collection cavity 18. The suction device 5 is an external negative pressure generator (not shown in the figure), which is connected to the lower end of the collection cavity 18 through a pipeline, and simultaneously performs back suction on the five filter bags 2. The upper side of the filtering chamber 11 is provided with an air inlet cavity, the upper end of which is connected with a waste gas pipeline. The gas to be filtered enters the air inlet cavity from the waste gas pipeline. The upper ends of the five filter bags 2 are communicated with the air inlet cavity. The waste gas entering the air inlet cavity enters the filter bags 2 through the upper ends of the filter bags 2 for filtration. After filtration, the impurities in the waste gas are left in the filter bags 2, and the filtered gas is discharged from the filter bags 2.

[0044] During the filtration process, the metal powder or other impurities are effectively intercepted by the filter bags 2, and the clean gas continues to flow through the filter bags 2. When it is necessary to clean the filter bags 2, the rotation of the drive shaft 431 drives the lower sealing member 42 to move downward, so that the lower end of the filter bag 2 is opened. The impurities can be quickly discharged into the collection cavity 18 under the action of gravity and the helical blade 3. The inverted conical design of the collection cavity 18 helps to concentrate and discharge the impurities, facilitating subsequent cleaning and processing work.

[0045] At the same time, the negative pressure effect of the suction device 5 not only helps the filtration of the gas, but also plays a key role in the cleaning process. When the lower end of the filter bag 2 is opened, the negative pressure generator performs back suction on the collection cavity 18 through the pipeline, further promoting the discharge of impurities and ensuring the cleaning effect of the filter bag 2. This design not only improves the filtration efficiency of the dust removal device, but also greatly simplifies the cleaning process of the filter bag 2 and reduces the maintenance cost.

[0046] In the preferred embodiment, a plurality of filter bags 2 can be provided. By increasing the number of filter bags 2, the filtration efficiency can be effectively improved. In the case of high content of gas impurities, more filter bags 2 can effectively alleviate the pressure on the filter bags 2 during filtration. At the same time, a larger number of filter bags 2 can increase the single use time of the equipment. After a part of the filter bags 2 are blocked by filtration, a part of the filter bags 2 can still normally filter, thereby reducing the frequency of cleaning the filter bags 2, increasing the single filtration time of the equipment, and increasing the number of filter bags 2 without affecting the single cleaning time of the equipment, so that the equipment has better use effect.

[0047] In addition, in order to further improve the dust removal efficiency, the dust removal device in the embodiment is also equipped with an automatic dust cleaning system. The system can detect the pressure difference between the inside and outside of the filter bag 2 during filtration. After the pressure difference reaches the preset value, the negative pressure generator is started to perform reverse blowing on the filter bag 2, effectively removing the dust attached to the surface of the filter bag 2, and ensuring the continuous and efficient operation of the filter bag 2. This design not only prolongs the service life of the filter bag 2, but also reduces the frequency of manual maintenance, and improves the automation level and operation efficiency of the overall equipment.

[0048] The implementation principle of the embodiment of the application is as follows: during filtration, the exhaust gas enters the inlet cavity from the exhaust pipe, the sealing plate 411 is in a vertical state at this time, the upper end of the filter bag 2 is in an open state, the lower bottom surface of the lower sealing element 42 is higher than the lower ring flange 15, and the lower end of the filter bag 2 is closed. At this time, the exhaust gas enters the filter bag 2 through the sealing plate 411 for filtration, and is discharged from the filter chamber 11 after filtration. During filtration, the positive pressure filter bag 2 is in an outward convex state, the inner wall of the filter bag 2 does not contact the spiral blade 3, and impurities are accumulated in the filter bag 2 after a period of filtration. In the cleaning mode, the driving source 432 is opened, the driving shaft 431 is in a clockwise rotation state in the top view direction, the driving shaft 431 makes the rotating rod 412 rotate, the sealing plate 411 rotates from the vertical state to the horizontal state, the sealing plate 411 is lapped on the adjacent rotating rod 412, and the multiple sealing plates 411 are closed to form a complete circular plate, so as to block the upper end of the filter bag 2. The driving shaft 431 rotates to move the lower sealing element 42 downward to the spiral disengagement, the lower bottom surface of the lower sealing element 42 is lower than the lower ring flange 15, the lower end of the filter bag 2 is in an open state, the suction device 5 sucks the collection cavity 18, the five filter bags 2 are in an inward concave state, the inner wall of the filter bag 2 is tightly attached to the spiral blade 3, the filter bag 2 is simultaneously subjected to reverse blowing by the gas and scraping and cleaning by the rotation of the spiral blade 3, the spiral blade 3 is elongated from the lower end along the rotation axis when rotating under the action of the lever 12, the spiral blade 3 overcomes the elasticity of the lever 12 when being elongated, the horizontal section of the lever 12 is deformed, the spiral blade 3 is restored to the original length after being separated from the lever 12, the spiral blade 3 vibrates to prevent impurities from accumulating on the spiral blade 3, and the impurities are quickly discharged along the channel formed by the spiral blade 3 and the filter bag 2 under the action of the suction device 5, so as to ensure the continuous and efficient operation of the filter bag 2. After cleaning, the filter bag 2 is reset to the filtration state.

[0049] Although the embodiments of the application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the application.

Claims

1. A dust removal device for metal powder production, comprising a housing, a filter chamber, characterized in that, The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model discloses a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices.

2. The dust removal device for metal powder production according to claim 1, characterized in that, The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices.

3. The dust removal device for metal powder production according to claim 2, characterized in that The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices.

4. The dust removal device for metal powder production according to claim 1, characterized in that, The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices.

5. The dust removal device for metal powder production according to claim 1, characterized in that, The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices.

6. The dust removal device for metal powder production according to claim 5, characterized in that The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices.

7. The dust removal device for metal powder production according to claim 4, characterized in that, The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. 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The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The utility model relates to a filter chamber and a filter device, and relates to the technical field of filter devices. The

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