An air filtration device for metal powder processing

Abstract

The present invention belongs to the technical field of air filtration, and particularly relates to an air filtration device for metal powder processing. Aiming at the problems of low service life of the filter screen plate and difficulty in replacement proposed in the background technology, the following solutions are now proposed, including a bottom pipe. A top pipe is provided on the outer wall of the top of the bottom pipe, and a filter plate replacement mechanism for facilitating the replacement of the filter plate and a filter plate cleaning mechanism for improving the service life of the filter plate are provided on the bottom pipe and the top pipe. Among them, both the filter plate replacement mechanism and the filter plate cleaning mechanism include two parts, and one part is located inside the bottom pipe and the top pipe. Under the action of the filter plate cleaning mechanism of the present invention, the filter screen plate between the bottom pipe and the top pipe can be cleaned, and the filter screen plate can be automatically cleaned inside the pipeline, greatly reducing the cleaning difficulty and improving the service life of the filter screen plate. Moreover, the filter screen plate can be quickly replaced through the action of the filter plate replacement mechanism, saving the time for screen replacement.

Description

Technical Field

[0001] The present invention relates to the technical field of air filtration, and in particular to an air filtration device for metal powder processing. Background Art

[0002] Metal powder processing refers to a manufacturing process that uses metal (or alloy) powder as raw material and through certain forming processes and processing methods, presses the original powder into shape or makes metal parts. This processing technology has the advantages of high precision, good wear resistance, high strength, good corrosion resistance, etc., and is widely used in the fields of aviation, aerospace, automobiles, electronics, manufacturing, etc.

[0003] During the metal powder processing, the powder needs to be conveyed by a blower. To avoid the influence of air, an air filtration structure is generally set on the pipeline of the blower, so that the air can pass through the filter plate and be discharged from the upper end of the equipment, and the metal powder is blocked by the filter plate and falls downward along the pipeline by gravity. However, the filter plate needs to be installed inside the pipeline, which is not convenient for cleaning. After the filter plate works for a period of time, the metal powder will block the inner network, with a low service life and not easy to replace. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides an air filtration device for metal powder processing, which overcomes the deficiencies of the prior art and effectively solves the problems of low service life of the filter mesh plate and not easy to replace.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] An air filtration device for metal powder processing, including a bottom pipe, a top pipe is provided on the outer wall of the top of the bottom pipe, and a filter plate replacement mechanism for facilitating the replacement of the filter plate and a filter plate cleaning mechanism for improving the service life of the filter plate are provided on the bottom pipe and the top pipe. Among them, both the filter plate replacement mechanism and the filter plate cleaning mechanism include two parts, one part is located inside the bottom pipe and the top pipe, and the other part is arranged outside the bottom pipe and the top pipe;

[0007] The filter plate replacement mechanism is composed of a conversion component and a filtering component. Among them, the conversion component is arranged on one side of the bottom pipe, and the filtering component is installed on the outer wall of the conversion component. Among them, there are two filtering components, which are respectively located on both sides of the conversion component;

[0008] The filter plate cleaning mechanism is composed of a top plate, a bottom plate, an upper cleaning component, a lifting component, a lower vibration exciting component and a sealing component. Among them, the top plate and the bottom plate are respectively welded on the outer walls of the top pipe and the bottom pipe, the upper cleaning component is installed on the outer wall of the top plate, the lower vibration exciting component is installed on the outer wall of the bottom plate, the lifting component is arranged between the upper cleaning component and the lower vibration exciting component, and the sealing component is arranged on the inner wall of the bottom pipe.

[0009] Preferably, the conversion component is composed of a connecting column, a fixing seat, a groove, a central column, a steering wheel, a first elastic member, a handlebar, and a connecting frame. Among them, the connecting column is welded to the outer wall of one side of the bottom tube, the fixing seat is welded to the outer wall of one end of the connecting column, there are two grooves, which are respectively opened on both sides of the inner circle of the fixing seat, the central column is rotatably connected to the inner wall of the fixing seat, the steering wheel is installed at the bottom of the outer wall of the central column, there are two first elastic members, which are respectively installed on the inner walls of both sides of the steering wheel, and one end of the first elastic member is embedded in the inside of the groove, the handlebar is welded to the top outer wall of the central column, and the connecting frame is welded to the top of the outer wall of the central column;

[0010] A positioning hole is opened at the center of the outer wall of the bottom of the fixing seat, and the central column is rotatably connected to the inner wall of the positioning hole.

[0011] Preferably, the filtering component includes an outer frame fixedly connected to the outer walls of both sides of the connecting frame, symmetrically distributed second elastic members installed on the inner wall of the outer frame, an inner plate slidably connected to the inner wall of the outer frame, and symmetrically distributed positioning grooves opened on the side wall of the inner plate. Among them, one end of the second elastic member is embedded in the inner wall of the positioning groove, and the filter mesh plate is installed on the inner wall of the inner plate.

[0012] Preferably, the upper cleaning component is composed of a servo motor, a limiting tube, a limiting plate, a spray pipe, a pulley pair, and an air pipe. Among them, the servo motor is fixedly connected to the top outer wall of the top plate by screws, the limiting tube is fixedly connected to the output shaft of the servo motor through a coupling, the limiting plate is welded to the inner wall of one side of the top pipe, the spray pipe is rotatably connected to the inner wall of one end of the limiting plate, and nozzles are arranged at equal distances at the bottom of the spray pipe, the pulley pair is installed between the spray pipe and the limiting tube, and the air pipe penetrates through the inside of the top pipe and is rotatably connected to the outer wall of one end of the spray pipe.

[0013] Preferably, the lifting component includes a limiting rod slidably connected to the inner wall of the limiting tube, a reciprocating lead screw welded to the outer wall of the bottom of the limiting rod, an angle plate welded to the inner wall of the top plate and rotatably connected to the outer wall of the reciprocating lead screw, an internally threaded tube screwed to the outer wall of the reciprocating lead screw, and a rectangular block welded to the outer wall of the bottom of the internally threaded tube, and the rectangular block is slidably connected to the inner wall of the bottom plate.

[0014] Preferably, the lower vibration exciting component includes a long rod welded to the outer wall of the internally threaded tube, a connecting seat welded to the outer wall of one end of the long rod, and an internally threaded sleeve welded to the inner wall of the connecting seat. Among them, there are four internally threaded sleeves, all of which are welded to the end of the connecting seat, and the vibration exciting blocks are screwed to the inner wall of the internally threaded sleeve.

[0015] Preferably, the sealing assembly includes a sealing plate welded to the outer wall of the long rod, an arc-shaped groove formed in the inner wall of the other side of the bottom pipe, and the sealing plate is slidably connected to the inner wall of the arc-shaped groove. A strip-shaped groove is formed in the outer wall of the other side of the bottom pipe and penetrates through the inside of the arc-shaped groove.

[0016] Preferably, the second elastic member includes a clamping frame, a guide post welded to the inner wall of the clamping frame, and a spring fixedly connected between the clamping frame and the outer frame.

[0017] Preferably, lifting members are provided on the bottom pipe, the top pipe, the top plate and the bottom plate. The lifting member includes a cylinder fixedly connected between the top plate and the bottom plate, a shaft pin welded to the side wall flange of the top pipe, and a pin hole formed in the side wall flanges of the outer frame and the bottom pipe. The shaft pin is slidably connected to the inner wall of the pin hole.

[0018] Preferably, a top cover is fixedly connected to the outer wall of the top of the top pipe through a flange, an alarm is installed on the outer wall of the top cover, and a pressure gauge is installed on the pipe at the top of the top cover.

[0019] The beneficial effects of the present invention are as follows:

[0020] For the air filtering device for metal powder processing of the present invention, under the action of the filter plate cleaning mechanism, the filter net plate between the bottom pipe and the top pipe can be cleaned, and the filter net plate can be automatically cleaned inside the pipeline, greatly reducing the cleaning difficulty and increasing the service life of the filter net plate. And through the operation of the filter plate replacement mechanism, the filter net plate can be quickly replaced, saving the time for replacing the net;

[0021] For the air filtering device for metal powder processing of the present invention, the inner plate can avoid the shaking of the filter net plate by sliding into the position of the second elastic member, having the effect of quick positioning. And by rotating the turning handle to drive the control steering wheel to turn, the old filter net plate can be taken out and a clean filter net plate can be put in, realizing the replacement of the positions of the two filter plates, greatly saving the replacement time;

[0022] For the air filtering device for metal powder processing of the present invention, the rotation of the limiting pipe driven by the servo motor can control the rotation of the spray pipe. The nozzle at the bottom of the spray pipe can blow air downward onto the filter net plate, achieving the upper part cleaning of the filter net plate. At the same time, the up and down movement of the inner threaded pipe can control the long rod to drive the vibration block to continuously strike the filter net plate back and forth, realizing the lower part cleaning of the filter net plate. It is an integrated structure, having the effect of double cleaning, increasing the service life of the filter net plate and extending the net replacement cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of an air filtering device for metal powder processing proposed by the present invention Figure 1 ;

[0024] Figure 2 Overall structural schematic diagram of an air filtration device for metal powder processing proposed by the present invention Figure 2 ;

[0025] Figure 3 Internal structural schematic diagram of the bottom pipe and top pipe of an air filtration device for metal powder processing proposed by the present invention Figure 1 ;

[0026] Figure 4 Internal structural schematic diagram of the bottom pipe and top pipe of an air filtration device for metal powder processing proposed by the present invention Figure 2 ;

[0027] Figure 5 Schematic diagram of the conversion component of an air filtration device for metal powder processing proposed by the present invention;

[0028] Figure 6 Schematic diagram of the filtration component of an air filtration device for metal powder processing proposed by the present invention;

[0029] Figure 7 Internal structural schematic diagram of the second elastic member of an air filtration device for metal powder processing proposed by the present invention;

[0030] Figure 8 Schematic diagram of the filter plate cleaning mechanism of an air filtration device for metal powder processing proposed by the present invention;

[0031] Figure 9 Schematic diagram of the lifting component structure of an air filtration device for metal powder processing proposed by the present invention;

[0032] Figure 10 Schematic diagram of the limiting rod structure of an air filtration device for metal powder processing proposed by the present invention;

[0033] Figure 11 Schematic diagram of the sealing component of an air filtration device for metal powder processing proposed by the present invention.

[0034] In the figure: 1. Bottom pipe; 2. Top pipe; 3. Filter plate replacement mechanism; 31. Conversion component; 311. Connecting column; 312. Fixed seat; 313. Groove; 314. Central column; 315. Steering wheel; 316. First elastic part; 317. Turning handle; 318. Connecting frame; 32. Filter component; 321. Outer frame; 322. Second elastic part; 323. Inner plate; 324. Positioning groove; 325. Filter screen plate; 4. Filter plate cleaning mechanism; 41. Top plate; 42. Bottom plate; 43. Upper cleaning component; 431. Servo motor; 432. Limit pipe; 433. Limit plate; 434. Spray pipe; 435. Pulley pair; 436. Air pipe; 44. Lifting component; 441. Limit rod; 442. Reciprocating lead screw; 443. Angle plate; 444. Inner threaded pipe; 445. Rectangular block; 45. Lower vibration exciting component; 451. Long rod; 452. Connecting seat; 453. Inner threaded sleeve; 454. Vibration exciting block; 46. Sealing component; 461. Sealing plate; 462. Arc groove; 463. Strip groove; 5. Clamping frame; 6. Guide post; 7. Spring; 8. Lifting part; 81. Cylinder; 82. Axle pin; 83. Pin hole; 9. Positioning hole; 10. Top cover; 11. Alarm; 12. Pressure gauge. Detailed implementation mode

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0036] Embodiment 1, referring to Figure 1-2 , an air filter device for metal powder processing, including a bottom pipe 1. A top pipe 2 is provided on the outer wall of the top of the bottom pipe 1, and a filter plate replacement mechanism 3 for conveniently replacing the filter plate and a filter plate cleaning mechanism 4 for improving the service life of the filter plate are provided on the bottom pipe 1 and the top pipe 2. Among them, both the filter plate replacement mechanism 3 and the filter plate cleaning mechanism 4 include two parts, one part is located inside the bottom pipe 1 and the top pipe 2, and the other part is provided outside the bottom pipe 1 and the top pipe 2.

[0037] In this embodiment, under the action of the filter plate cleaning mechanism 4, the filter screen plate 325 between the bottom pipe 1 and the top pipe 2 can be cleaned. The filter screen plate 325 can be automatically cleaned inside the pipeline, greatly reducing the cleaning difficulty, improving the service life of the filter screen plate 325, and the filter screen plate 325 can be quickly replaced by the action of the filter plate replacement mechanism 3, saving the time for replacing the screen.

[0038] Embodiment 2, referring to Figure 3, an air filtration device for metal powder processing. The filter plate replacement mechanism 3 is composed of a conversion component 31 and a filtration component 32. Among them, the conversion component 31 is arranged on one side of the bottom pipe 1, and the filtration component 32 is installed on the outer wall of the conversion component 31. Among them, there are two filtration components 32, which are respectively located on both sides of the conversion component 31.

[0039] In this embodiment, by sliding the inner plate 323 into the position of the second elastic member 322, the shaking of the filter mesh plate 325 can be avoided, and it has the effect of quick positioning. And by rotating the handle 317 to drive the control steering wheel 315 to turn, the old filter mesh plate 325 can be taken out and a clean filter mesh plate 325 can be put in, realizing the replacement of the positions of the two filter plates, greatly saving the replacement time.

[0040] Embodiment Three, referring to Figure 3-4 , an air filtration device for metal powder processing. The filter plate cleaning mechanism 4 is composed of a top plate 41, a bottom plate 42, an upper cleaning component 43, a lifting component 44, a lower vibration exciting component 45 and a sealing component 46. Among them, the top plate 41 and the bottom plate 42 are respectively welded to the outer walls of the top pipe 2 and the bottom pipe 1. The upper cleaning component 43 is installed on the outer wall of the top plate 41, the lower vibration exciting component 45 is installed on the outer wall of the bottom plate 42, the lifting component 44 is arranged between the upper cleaning component 43 and the lower vibration exciting component 45, and the sealing component 46 is arranged on the inner wall of the bottom pipe 1.

[0041] In this embodiment, by driving the limit pipe 432 to rotate by the servo motor 431, the rotation of the spray pipe 434 can be controlled. The spray head at the bottom of the spray pipe 434 can blow downward to the filter mesh plate 325, achieving the upper cleaning of the filter mesh plate 325. At the same time, the up and down movement of the internally threaded pipe 444 can control the long rod 451 to drive the vibration exciting block 454 to continuously strike the filter mesh plate 325 back and forth, realizing the lower cleaning of the filter mesh plate 325. It is an integrated structure with the effect of double cleaning, improving the service life of the filter mesh plate 325 and extending the mesh replacement cycle.

[0042] Referring to Figure 5, the conversion component 31 is composed of a connecting column 311, a fixed seat 312, a groove 313, a central column 314, a steering wheel 315, a first elastic member 316, a handlebar 317 and a connecting frame 318. Among them, the connecting column 311 is welded to the outer wall of one side of the bottom tube 1, the fixed seat 312 is welded to the outer wall of one end of the connecting column 311, there are two grooves 313, which are respectively opened on both sides of the inner ring of the fixed seat 312, the central column 314 is rotatably connected to the inner wall of the fixed seat 312, the steering wheel 315 is installed at the bottom of the outer wall of the central column 314, there are two first elastic members 316, which are respectively installed on the inner walls of both sides of the steering wheel 315, and one end of the first elastic member 316 is embedded inside the groove 313, the handlebar 317 is welded to the top outer wall of the central column 314, and the connecting frame 318 is welded to the top of the outer wall of the central column 314;

[0043] The first elastic member 316 will be squeezed in the groove 313. By rotating the handlebar 317, the contraction of the first elastic member 316 can be controlled, and then the steering of the steering wheel 315 can be controlled, so as to conveniently change the positions of the two filter plates, take out the old filter mesh plate 325, and put in a clean filter mesh plate 325.

[0044] A positioning hole 9 is opened at the center of the bottom outer wall of the fixed seat 312, and the central column 314 is rotatably connected to the inner wall of the positioning hole 9.

[0045] Refer to Figure 6 , the filter component 32 includes an outer frame 321 fixedly connected to the outer walls of both sides of the connecting frame 318, symmetrically distributed second elastic members 322 installed on the inner wall of the outer frame 321, an inner plate 323 slidably connected to the inner wall of the outer frame 321, and symmetrically distributed positioning grooves 324 opened on the side wall of the inner plate 323. Among them, one end of the second elastic member 322 is embedded in the inner wall of the positioning groove 324, and the filter mesh plate 325 is installed on the inner wall of the inner plate 323.

[0046] The inner plate 323 outside the filter mesh plate 325 can be positioned along the position of the second elastic member 322, and its positioning groove 324 can be slid onto the outer wall of the second elastic member 322 to prevent the filter mesh plate 325 from shaking, having the effect of quick positioning.

[0047] Refer to Figure 8, the upper cleaning assembly 43 is composed of a servo motor 431, a limit tube 432, a limit plate 433, a spray pipe 434, a pulley pair 435 and an air pipe 436. Among them, the servo motor 431 is fixedly connected to the top outer wall of the top plate 41 by screws, the limit tube 432 is fixedly connected to the output shaft of the servo motor 431 through a coupling, the limit plate 433 is welded to the inner wall of one side of the top pipe 2, the spray pipe 434 is rotatably connected to the inner wall of one end of the limit plate 433, and the bottom of the spray pipe 434 is provided with nozzles distributed at equal intervals. The pulley pair 435 is installed between the spray pipe 434 and the limit tube 432, and the air pipe 436 penetrates through the inside of the top pipe 2 and is rotatably connected to the outer wall of one end of the spray pipe 434.

[0048] Under the driving cooperation of the pulley pair 435, the rotation of the limit tube 432 driven by the servo motor 431 can control the rotation of the spray pipe 434. When the air pipe 436 is connected, since the spray pipe 434 is arranged above the filter screen plate 325, the nozzles at the bottom of the spray pipe 434 can blow air downward to the filter screen plate 325, achieving the effect of cleaning the upper part of the filter screen plate 325.

[0049] Refer to Figure 8 And Figure 10 , the lifting assembly 44 includes a limit rod 441 slidably connected to the inner wall of the limit tube 432, a reciprocating lead screw 442 welded to the bottom outer wall of the limit rod 441, an angle plate 443 welded to the inner wall of the top plate 41 and rotatably connected to the outer wall of the reciprocating lead screw 442, an internal thread tube 444 screwed onto the outer wall of the reciprocating lead screw 442, and a rectangular block 445 welded to the bottom outer wall of the internal thread tube 444, and the rectangular block 445 is slidably connected to the inner wall of the bottom plate 42.

[0050] As the rotation of the limit tube 432 driven by the servo motor 431 can control the rotation of the limit rod 441, and then drive the rotation of the reciprocating lead screw 442. Since the internal thread tube 444 is screwed onto the outer wall of the reciprocating lead screw 442, the internal thread tube 444 and the rectangular block 445 will make a reciprocating lifting motion, which is beneficial to controlling the reciprocating lifting of the subsequent lower vibration exciting assembly 45.

[0051] Refer to Figure 9 , the lower vibration exciting assembly 45 includes a long rod 451 welded to the outer wall of the internal thread tube 444, a connecting seat 452 welded to one end outer wall of the long rod 451, and an internal thread sleeve 453 welded to the inner wall of the connecting seat 452. Among them, there are four internal thread sleeves 453, all welded to the end of the connecting seat 452, and the vibration exciting block 454 is screwed onto the inner wall of the internal thread sleeve 453.

[0052] After the excitation block 454 rotates inside the internal thread sleeve 453 to adjust the height, as the internal thread pipe 444 moves up and down, the long rod 451 will drive the excitation block 454 to move up and down together. The excitation block 454 can continuously strike the filter screen plate 325, realizing the cleaning of the lower part of the filter screen plate 325.

[0053] Referring to Figure 11 , the sealing assembly 46 includes a sealing plate 461 welded to the outer wall of the long rod 451, an arc-shaped groove 462 opened on the inner wall of the other side of the bottom pipe 1, and the sealing plate 461 is slidably connected to the inner wall of the arc-shaped groove 462. A strip-shaped groove 463 is opened on the outer wall of the other side of the bottom pipe 1, and the strip-shaped groove 463 penetrates through the inside of the arc-shaped groove 462.

[0054] Since the sealing plate 461 is installed on the long rod 451, when the long rod 451 moves up and down along the strip-shaped groove 463, the sealing plate 461 can slide along the inner wall of the arc-shaped groove 462, so that the inner and outer walls of the bottom pipe 1 can always maintain a sealed state, thus preventing metal powder from passing through the strip-shaped groove 463 and causing waste of raw materials.

[0055] Referring to Figure 7 , the second elastic member 322 includes a clamping frame 5, a guide post 6 welded to the inner wall of the clamping frame 5, and a spring 7 fixedly connected between the clamping frame 5 and the outer frame 321.

[0056] During the process of placing the inner plate 323 outside the filter screen plate 325 into the outer frame 321, the clamping frame 5 inside the second elastic member 322 will abut against the inner wall of the inner plate 323 under the action of the spring 7, thereby fixing the inner plate 323.

[0057] Referring to Figure 1-2 , lifting members 8 are provided on the bottom pipe 1, the top pipe 2, the top plate 41 and the bottom plate 42, and the lifting members 8 include a cylinder 81 fixedly connected between the top plate 41 and the bottom plate 42, a shaft pin 82 welded to the side wall flange of the top pipe 2, and a pin hole 83 opened on the side wall flanges of the outer frame 321 and the bottom pipe 1, and the shaft pin 82 is slidably connected to the inner wall of the pin hole 83.

[0058] When the cylinder 81 pushes the top plate 41 upward, it will control the separation of the bottom pipe 1 and the top pipe 2 from one of the outer frames 321, and the shaft pin 82 will disengage from the inside of the pin hole 83, so that the outer frame 321 will not be blocked during rotation.

[0059] Referring to Figure 1 , the top outer wall of the top pipe 2 is fixedly connected with a top cover 10 through a flange, and an alarm 11 is installed on the outer wall of the top cover 10, and a pressure gauge 12 is installed on the pipe at the top of the top cover 10.

[0060] The pressure gauge 12 is used to monitor the air pressure inside the pipeline at the top of the top cover 10 in real time. When the air pressure is lower than the normal value, the filter screen plate 325 needs to be cleaned, and when the air pressure is too low, the filter screen plate 325 needs to be replaced in time.

[0061] Working principle: The bottom pipe 1 and the top pipe 2 in the device intercept a part of the filtering device. The ends of the bottom pipe 1 and the top pipe 2 that are far away from each other are both fixed by flexible connections. The air pressure inside the pipeline at the top of the top cover 10 is monitored by the pressure gauge 12. When the air pressure is lower than the normal value, the servo motor 431 drives the limit pipe 432 to rotate to control the rotation of the spray pipe 434, and then the nozzle at the bottom of the spray pipe 434 can blow downward to the filter screen plate 325. During this process, the up and down movement of the internal thread pipe 444 can control the long rod 451 to drive the vibration block 454 to continuously strike the filter screen plate 325 back and forth, so that both the top and bottom of the filter screen plate 325 can be cleaned simultaneously;

[0062] When the filter screen plate 325 needs to be replaced due to too low air pressure, first, the cylinder 81 pushes the top plate 41 upward to control the separation of the bottom pipe 1 and the top pipe 2 from one of the outer frames 321, then place the new filter screen plate 325 into the inner plate 323, and then drive the control steering wheel 315 to turn by rotating the turning handle 317 to take out the old filter screen plate 325 and put in the clean filter screen plate 325.

[0063] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0064] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0065] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An air filtering device for metal powder processing, comprising a bottom pipe (1), characterized in that, A top pipe (2) is provided on the outer wall of the top of the bottom pipe (1), and a filter plate replacement mechanism (3) for facilitating the replacement of the filter plate and a filter plate cleaning mechanism (4) for increasing the service life of the filter plate are provided on the bottom pipe (1) and the top pipe (2). Among them, both the filter plate replacement mechanism (3) and the filter plate cleaning mechanism (4) include two parts, one part is located inside the bottom pipe (1) and the top pipe (2), and the other part is arranged outside the bottom pipe (1) and the top pipe (2). The filter plate replacement mechanism (3) is composed of a conversion component (31) and a filtering component (32). Among them, the conversion component (31) is arranged on one side of the bottom pipe (1), and the filtering component (32) is installed on the outer wall of the conversion component (31). Among them, there are two filtering components (32), which are respectively located on both sides of the conversion component (31). The filter plate cleaning mechanism (4) is composed of a top plate (41), a bottom plate (42), an upper cleaning component (43), a lifting component (44), a lower vibration exciting component (45) and a sealing component (46). Among them, the top plate (41) and the bottom plate (42) are respectively welded to the outer walls of the top pipe (2) and the bottom pipe (1). The upper cleaning component (43) is installed on the outer wall of the top plate (41). The lower vibration exciting component (45) is installed on the outer wall of the bottom plate (42). The lifting component (44) is arranged between the upper cleaning component (43) and the lower vibration exciting component (45). The sealing component (46) is arranged on the inner wall of the bottom pipe (1). The conversion component (31) is composed of a connecting column (311), a fixed seat (312), a groove (313), a central column (314), a steering wheel (315), a first elastic member (316), a turning handle (317) and a connecting frame (318). Among them, the connecting column (311) is welded to the outer wall of one side of the bottom pipe (1). The fixed seat (312) is welded to the outer wall of one end of the connecting column (311). There are two grooves (313), which are respectively opened on both sides of the inner circle of the fixed seat (312). The central column (314) is rotatably connected to the inner wall of the fixed seat (312). The steering wheel (315) is installed at the bottom of the outer wall of the central column (314). There are two first elastic members (316), which are respectively installed on the inner walls of both sides of the steering wheel (315), and one end of the first elastic member (316) is embedded in the groove (313). The turning handle (317) is welded to the top outer wall of the central column (314). The connecting frame (318) is welded to the top of the outer wall of the central column (314). A positioning hole (9) is opened at the center of the bottom outer wall of the fixed seat (312), and the central column (314) is rotatably connected to the inner wall of the positioning hole (9).

2. The air filtration device for metal powder processing according to claim 1, wherein, The filtering component (32) includes an outer frame (321) fixedly connected to the outer walls on both sides of the connecting frame (318), symmetrically distributed second elastic members (322) installed on the inner wall of the outer frame (321), an inner plate (323) slidably connected to the inner wall of the outer frame (321), symmetrically distributed positioning grooves (324) opened on the side wall of the inner plate (323). Among them, one end of the second elastic member (322) is embedded in the inner wall of the positioning groove (324), and the filter mesh plate (325) is installed on the inner wall of the inner plate (323).

3. The air filtration device for metal powder processing according to claim 1, characterized in that, The upper cleaning component (43) is composed of a servo motor (431), a limiting tube (432), a limiting plate (433), a spray tube (434), a pulley pair (435) and an air pipe (436). Among them, the servo motor (431) is fixedly connected to the top outer wall of the top plate (41) by screws, the limiting tube (432) is fixedly connected to the output shaft of the servo motor (431) by a coupling, the limiting plate (433) is welded to the inner wall of one side of the top pipe (2), the spray tube (434) is rotatably connected to the inner wall of one end of the limiting plate (433), and the bottom of the spray tube (434) is provided with equally spaced nozzles. The pulley pair (435) is installed between the spray tube (434) and the limiting tube (432), and the air pipe (436) penetrates through the inside of the top pipe (2) and is rotatably connected to the outer wall of one end of the spray tube (434).

4. An air filtration device for metal powder processing according to claim 1, characterized in that, The lifting component (44) includes a limiting rod (441) slidably connected to the inner wall of the limiting tube (432), a reciprocating lead screw (442) welded to the bottom outer wall of the limiting rod (441), an angle plate (443) welded to the inner wall of the top plate (41) and rotatably connected to the outer wall of the reciprocating lead screw (442), an inner threaded tube (444) screwed onto the outer wall of the reciprocating lead screw (442), and a rectangular block (445) welded to the bottom outer wall of the inner threaded tube (444). The rectangular block (445) is slidably connected to the inner wall of the bottom plate (42).

5. An air filtration device for metal powder processing according to claim 1, characterized in that, The lower vibration exciting component (45) includes a long rod (451) welded to the outer wall of the inner threaded tube (444), a connecting seat (452) welded to one end outer wall of the long rod (451), and an inner threaded sleeve (453) welded to the inner wall of the connecting seat (452). Among them, there are four inner threaded sleeves (453), all welded to the end of the connecting seat (452), and the vibration exciting block (454) is screwed onto the inner wall of the inner threaded sleeve (453).

6. The air filtration device for metal powder processing according to claim 1, characterized in that, The sealing component (46) includes a sealing plate (461) welded to the outer wall of the long rod (451), an arc-shaped groove (462) opened on the inner wall of the other side of the bottom tube (1), and the sealing plate (461) is slidably connected to the inner wall of the arc-shaped groove (462). A strip-shaped groove (463) is opened on the outer wall of the other side of the bottom tube (1), and the strip-shaped groove (463) penetrates through the inside of the arc-shaped groove (462).

7. The air filtration device for metal powder processing according to claim 2, wherein, The second elastic member (322) includes a clamping frame (5), a guide post (6) welded to the inner wall of the clamping frame (5), and a spring (7) fixedly connected between the clamping frame (5) and the outer frame (321).

8. An air filtration device for metal powder processing according to claim 1, characterized in that, Lifting members (8) are provided on the bottom pipe (1), the top pipe (2), the top plate (41) and the bottom plate (42), and the lifting member (8) includes a cylinder (81) fixedly connected between the top plate (41) and the bottom plate (42), a pin (82) welded to the side wall flange of the top pipe (2), and pin holes (83) formed in the outer frame (321) and the side wall flange of the bottom pipe (1), and the pin (82) is slidably connected to the inner wall of the pin hole (83).

9. An air filtration device for metal powder processing according to claim 1, characterized in that, A top cover (10) is fixedly connected to the outer wall of the top of the top pipe (2) through a flange, an alarm (11) is installed on the outer wall of the top cover (10), and a pressure gauge (12) is installed on the pipe at the top of the top cover (10).

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