An airflow screening device with controllable fineness of ultrafine powder
By designing a screening cylinder and rubber scraper cleaning system that automatically adjusts fineness in the airflow screening device, the problem of cumbersome fineness adjustment and observation window affecting operation efficiency in the prior art is solved, and efficient and convenient fineness is achieved Adjust and operate.
Patent Information
- Application Number
- CN202411644670.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2044-11-18
Smart Images
Figure CN119140411B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of airflow screens, and in particular relates to an airflow screening device with controllable fineness of ultrafine powder. Background Art
[0002] Airflow screen is a high-precision screening equipment for mesh screening of fine powders, which is widely used in chemical, pharmaceutical, food, papermaking, metallurgy, building materials, rubber, machinery and other industries. For example, in the existing public literature, CN205297127U-an airflow screening device for gypsum mortar premix production, is publicly provided with a screening box and a transmission box, a three-way feed pipe is provided between the screening box and the transmission box, a pneumatic screening assembly is provided in the screening box, a transmission assembly is provided in the transmission box, and a spiral conveying assembly is provided in the three-way feed pipe; the pneumatic screening assembly includes a fixed first-stage coarse screen filter cartridge and a rotatable second-stage coarse screen filter cartridge, the inner wall of the second-stage coarse screen filter cartridge is arranged close to the outer wall of the first-stage coarse screen filter cartridge; the pneumatic screening assembly also includes a rotating main shaft, the rotating main shaft is horizontally arranged in the first-stage coarse screen filter cartridge, two wind wheels are fixedly connected to the rotating main shaft, and four centrosymmetrical wind wheel blades are fixedly connected to each wind wheel.
[0003] Although the existing airflow screening device can screen coarse and fine materials and classify them for discharge, when the existing airflow screening device needs to obtain materials of different fineness, it is often necessary to remove the screening cylinder and replace the entire screening cylinder, which is a relatively troublesome replacement method. In addition, in order to facilitate the observation of the screening situation inside the device, an observation window is often set, but the observation window needs to be opened to observe the inside of the device. To this end, we provide an airflow screening device with controllable ultrafine powder fineness to solve the above problems. Summary of the invention
[0004] The object of the present invention is to provide an airflow screening device with controllable ultrafine powder fineness. Through the specific arrangement of a screening cylinder and a rubber scraper, the problem of the existing airflow screening device is solved. When materials of different finenesses need to be obtained, the screening cylinder is often removed and replaced, and the replacement method is relatively troublesome. In addition, in order to facilitate the observation of the screening situation inside the device, an observation window is often set, but the observation window needs to be opened during observation to observe the inside of the device.
[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:
[0006] The present invention discloses an airflow screening device with controllable fineness of ultrafine powder, comprising a frame, a driving mechanism, a chassis, a spiral feeding mechanism and a screening drum, wherein the driving mechanism is fixed on one side of the frame, the chassis is fixed on the top of the frame, the spiral feeding mechanism is fixed on one side of the chassis, the driving mechanism is transmission-connected with the spiral feeding mechanism, and the screening drum is connected inside the chassis;
[0007] A side door is movably connected to one side of the chassis, and the opening position of the side door is locked and limited by a door lock. A driving shaft is connected to the inside of the chassis, and a connecting cylinder is fixed to the inner end of the driving shaft.
[0008] A limiting ring is fixed on the inner side surface of the center of the side door, and the size of the hollow area inside the limiting ring matches the size of the end of the drive shaft;
[0009] The side door is evenly distributed with through holes in a ring shape, and a motor cylinder is fixed on the outside of each through hole, and a driving assembly is fixed inside each motor cylinder. The driving assembly includes a driving motor, a hydraulic rod and a limit rod. The connecting end of the driving motor is connected to the hydraulic rod, and the connecting end of the hydraulic rod is fixed to the limit rod through the seat plate. The limit rod matches the limit groove size of the outer end surface of the limit column;
[0010] The screening cylinder comprises a No. 1 ring frame, a No. 2 ring frame, a No. 3 ring frame, a No. 4 ring frame, a No. 5 ring frame, a No. 6 ring frame, a screw assembly, a connecting rod assembly and a filter assembly, the filter assembly comprises a No. 1 filter and a No. 2 filter, the No. 1 ring frame and the No. 2 ring frame are connected by the No. 1 filter, the No. 1 ring frame and the No. 2 ring frame, the No. 2 ring frame and the No. 3 ring frame, the No. 3 ring frame and the No. 4 ring frame, the No. 4 ring frame and the No. 5 ring frame, and the No. 5 ring frame and the No. 6 ring frame are all connected by No. 2 filter with different mesh apertures, the No. 6 ring frame is movably connected with a screw assembly, and the No. 1 ring frame and the No. 6 ring frame are fixed with a connecting rod assembly;
[0011] The screw rod assembly includes a No. 1 threaded rod, a No. 2 threaded rod and a No. 3 threaded rod. The outer ends of the No. 1 threaded rod, the No. 2 threaded rod and the No. 3 threaded rod are all fixed with limit columns. The cross-sectional diameters of the No. 1 threaded rod, the No. 2 threaded rod and the No. 3 threaded rod are increased in sequence. The No. 1 threaded rod, the No. 2 threaded rod and the No. 3 threaded rod are movably connected to the No. 6 ring frame in a clockwise direction through corresponding bearings. The No. 1 threaded rod, the No. 2 threaded rod and the No. 3 threaded rod are arranged in one-to-one correspondence with each driving assembly. The No. 1 threaded rod and the corresponding driving assembly jointly drive the No. 3 ring frame, the No. 2 threaded rod and the corresponding driving assembly jointly drive the No. 4 ring frame, and the No. 3 threaded rod and the corresponding driving assembly jointly drive the No. 5 ring frame;
[0012] The mesh aperture of the No. 1 filter is larger than the mesh aperture of each No. 2 filter, and the mesh aperture of the No. 2 filter between the No. 2 ring frame and the No. 3 ring frame, between the No. 3 ring frame and the No. 4 ring frame, between the No. 4 ring frame and the No. 5 ring frame, and between the No. 5 ring frame and the No. 6 ring frame decreases in sequence;
[0013] The inner walls of both sides of the No. 1 filter and the No. 2 filter are fixed with adhesive, and the peripheral side of the No. 1 filter and the peripheral side of the No. 2 filter are spliced by zippers;
[0014] The No. 1 connecting frame is fixed inside the No. 1 ring frame, the No. 2 connecting frame is fixed inside the No. 2 ring frame, the No. 3 connecting frame is fixed inside the No. 3 ring frame, the No. 4 ring frame and the No. 5 ring frame, and the No. 4 connecting frame is fixed inside the No. 6 ring frame. The No. 1 connecting frame, the No. 2 connecting frame, the No. 3 connecting frame and the No. 4 connecting frame all include a middle ring plate, a side ring plate, a movable area, a threaded area and a locking sleeve. The side ring plates are fixed on both sides of the middle ring plate, the inner side of the side ring plate is provided with a movable area, the outer side of the side ring plate is provided with a threaded area, the movable area is sleeved with a locking sleeve and movably connected, the inner edge of the opening of the locking sleeve is provided with an internal thread, and the internal thread of the locking sleeve matches the threaded area of the side ring plate;
[0015] Rubber scrapers are fixed on the middle ring plate of the third ring frame, the middle ring plate of the fourth ring frame and the middle ring plate of the fifth ring frame by screws, and the rubber scrapers are in contact with the glass top door.
[0016] The present invention is further configured such that a glass top door is connected to the top of the chassis, and a first discharge port and a second discharge port are arranged at the bottom of the chassis.
[0017] The present invention is further configured such that the driving mechanism comprises a driving seat, a servo motor, a driving gear and a toothed belt, the driving seat is fixed with a servo motor, a connecting end of the servo motor is connected with the driving gear, and an outer meshing connection of the driving gear is connected with the toothed belt;
[0018] The spiral feeding mechanism includes a feeding hopper and a feeding assembly, and the feeding assembly is fixed inside the feeding hopper;
[0019] The feeding assembly includes a spiral rod, an I-shaped shaft and a driven gear. One end of the spiral rod is fixed on the connecting tube, the other end of the spiral rod is fixed with the I-shaped shaft, the outer end of the I-shaped shaft is fixed with the driven gear, and the driven gear and the driving gear are connected by a toothed belt transmission.
[0020] The present invention is further configured that the No. 1 connecting frame includes a No. 1 inner ring plate, a connecting plate and a connecting hole, the No. 1 inner ring plate is fixed to the inner ring wall of the No. 1 ring frame through a group of annularly evenly distributed connecting plates, and each connecting plate is provided with a connecting hole;
[0021] The second connecting frame includes a first inner ring plate, a connecting plate, a through hole and a connecting hole. The first inner ring plate is fixed to the inner ring wall of the second ring frame through a group of annularly evenly distributed connecting plates. The first inner ring plate is provided with a group of annularly evenly distributed through holes, and each connecting plate is provided with a connecting hole.
[0022] The No. 4 connecting frame includes a No. 2 inner ring plate, a connecting plate, and a bearing. The No. 2 inner ring plate is fixed to the inner ring wall of the No. 6 ring frame through a group of annularly evenly distributed connecting plates. The No. 2 inner ring plate is connected to the connecting tube by a threaded structure, and each connecting plate is connected to a bearing.
[0023] The present invention is further configured that the No. 3 connecting frame includes a No. 1 inner ring plate, a connecting plate, a perforation, a No. 1 hole, a No. 2 hole and a No. 3 hole, the No. 1 inner ring plate located in the No. 3 ring frame is fixed to the inner ring wall of the No. 3 ring frame through a group of annularly evenly distributed connecting plates, the No. 1 inner ring plate located in the No. 4 ring frame is fixed to the inner ring wall of the No. 4 ring frame through a group of annularly evenly distributed connecting plates, the No. 1 inner ring plate located in the No. 5 ring frame is fixed to the inner ring wall of the No. 5 ring frame through a group of annularly evenly distributed connecting plates, the No. 1 inner ring plate is provided with a group of annularly evenly distributed perforations, and the No. 1 hole, the No. 2 hole and the No. 3 hole are evenly distributed on the connecting plate;
[0024] The apertures of hole No. 1, hole No. 2 and hole No. 3 on the No. 3 ring stand increase counterclockwise in sequence; the apertures of hole No. 1, hole No. 2 and hole No. 3 on the No. 4 ring stand increase counterclockwise in sequence; the apertures of hole No. 1, hole No. 2 and hole No. 3 on the No. 5 ring stand increase counterclockwise in sequence.
[0025] The present invention is further configured such that the aperture of the No. 1 hole on the No. 3 ring frame is smaller than the aperture of the No. 1 hole on the No. 4 ring frame and smaller than the aperture of the No. 1 hole on the No. 5 ring frame, and the aperture of the No. 1 hole on the No. 4 ring frame is the same as the aperture of the No. 1 hole on the No. 5 ring frame;
[0026] The diameter of the No. 2 hole on the No. 4 ring frame is smaller than the diameter of the No. 2 hole on the No. 3 ring frame and smaller than the diameter of the No. 2 hole on the No. 5 ring frame, and the diameter of the No. 2 hole on the No. 3 ring frame is the same as the diameter of the No. 2 hole on the No. 5 ring frame;
[0027] The aperture of the No. 3 hole on the No. 5 ring frame is smaller than the aperture of the No. 3 hole on the No. 4 ring frame and smaller than the aperture of the No. 3 hole on the No. 3 ring frame, and the aperture of the No. 3 hole on the No. 4 ring frame is the same as the No. 3 hole on the No. 3 ring frame.
[0028] The present invention is further configured such that the No. 1 threaded rod synchronously crosses the No. 1 hole on the No. 3 ring frame, the No. 1 hole on the No. 4 ring frame, and the No. 1 hole on the No. 5 ring frame, the No. 1 threaded rod is threadedly connected with the No. 1 hole on the No. 3 ring frame, and the No. 1 threaded rod is movably connected with the No. 1 hole on the No. 4 ring frame and the No. 1 hole on the No. 5 ring frame;
[0029] The No. 2 threaded rod synchronously crosses the No. 2 hole on the No. 3 ring frame, the No. 2 hole on the No. 4 ring frame, and the No. 2 hole on the No. 5 ring frame, the No. 2 threaded rod is threadedly connected with the No. 2 hole on the No. 4 ring frame, and the No. 2 threaded rod is movably connected with the No. 2 hole on the No. 3 ring frame and the No. 2 hole on the No. 5 ring frame;
[0030] The No. 3 threaded rod synchronously crosses the No. 3 hole on the No. 3 ring frame, the No. 3 hole on the No. 4 ring frame and the No. 3 hole on the No. 5 ring frame, the No. 3 threaded rod is threadedly connected with the No. 3 hole on the No. 5 ring frame, and the No. 3 threaded rod is movably connected with the No. 3 hole on the No. 3 ring frame and the No. 3 hole on the No. 4 ring frame.
[0031] The present invention is further configured such that the connecting rod assembly includes a group of connecting rods, the group of connecting rods are evenly distributed in a ring shape, one end of the group of connecting rods are fixed on the No. 2 inner ring plate of the No. 6 ring frame, the other end of the group of connecting rods are fixed on the No. 1 inner ring plate of the No. 1 ring frame, the group of connecting rods crosses the through holes of the No. 2 ring frame, the through holes of the No. 3 ring frame, the through holes of the No. 4 ring frame and the through holes of the No. 5 ring frame, the No. 2 ring frame is fixed on the group of connecting rods, and the No. 3 ring frame, the No. 4 ring frame and the No. 5 ring frame are all movably mounted on the group of connecting rods.
[0032] The present invention has the following beneficial effects:
[0033] The present invention, through the specific setting of the screening cylinder, can, when in use, unfold the corresponding No. 2 filter screen according to the use requirements through the driving action of the corresponding driving assembly and the screw assembly, and can automatically adjust the No. 2 filter screen without disassembling the screening cylinder, so as to conveniently and easily regulate the fineness of the fine material discharge.
[0034] The screening drum of the present invention is equipped with a plurality of No. 2 filter screens, and the required No. 2 filter screens can be replaced according to use, and can be applicable to screening requirements of multiple finenesses, thereby enhancing the functionality of the device and improving the applicability of the screening drum.
[0035] The present invention is provided with a glass top door, and a rubber scraper is provided on the outer peripheral side of the screening cylinder. During screening, through the driving action of the corresponding driving assembly and the screw assembly, each time the corresponding No. 3 ring frame, No. 4 ring frame or No. 5 ring frame is driven to move, the rubber scraper on the No. 3 ring frame, No. 4 ring frame or No. 5 ring frame will horizontally scrape across the glass top door, so that the inner wall of the glass top door can be cleaned, which prevents the glass top door from seriously collecting materials and affecting the operator's observation of the screening situation inside the chassis, and is more convenient for screening.
[0036] When the No. 1 filter screen and the No. 2 filter screen need to be replaced in the screening cylinder of the present invention, it is only necessary to open the glass top door to replace them. Moreover, the replacement method of the No. 1 filter screen and the No. 2 filter screen is relatively simple and very convenient to operate.
[0037] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.
[0039] Figure 1 The diagram is a structural diagram of an airflow screening device with controllable ultrafine powder fineness.
[0040] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure.
[0041] Figure 3 It is a schematic diagram of the overall structure of the screening cylinder and rubber scraper.
[0042] Figure 4 This is a schematic diagram of the state change structure when replacing each No. 2 filter screen in the screening cylinder.
[0043] Figure 5 This is a schematic diagram of the structure of the side door.
[0044] Figure 6 It is a schematic diagram of the structure in which the No. 1 connecting frame, the No. 2 connecting frame, the No. 3 connecting frame and the No. 4 connecting frame are connected to the driving shaft.
[0045] Figure 7 It is a structural schematic diagram of the connection between the No. 1 connecting frame, the No. 2 connecting frame, the No. 3 connecting frame and the No. 4 connecting frame and the driving assembly.
[0046] Figure 8 It is a schematic diagram of the structure of the docking part between the drive assembly and the No. 1 threaded rod.
[0047] Fig. 9 It is a schematic diagram of the structure of the connecting cylinder on the drive shaft.
[0048] Fig.10 This is a schematic diagram of the structure of the No. 1 ring frame.
[0049] Fig.11 This is a schematic diagram of the structure of the No. 2 ring frame.
[0050] Fig.12 This is a schematic diagram of the structure of the No. 3 ring frame.
[0051] Fig.13 This is a schematic diagram of the structure of the No. 6 ring frame.
[0052] Fig.14 This is a schematic diagram of the structure in which the rubber scraper is installed on the outside of the No. 3 ring frame.
[0053] Fig.15 for Fig.14 Cross-section view with the squeegee removed.
[0054] Fig.16 for Fig.15 Schematic diagram of the structure after removing the locking sleeve.
[0055] Fig.17 This is a schematic diagram of the structure of filter No. 1.
[0056] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0057] 100, frame; 200, driving mechanism; 210, driving seat; 220, servo motor; 230, driving gear; 240, toothed belt; 300, chassis; 310, side door; 311, limiting ring; 312, through hole; 313, motor cylinder; 314, driving assembly; 3141, driving motor; 3142, hydraulic rod; 3143, limiting rod; 320, driving shaft; 321, connecting cylinder; 301, glass top door; 302, discharge port No. 1; 303, discharge port No. 2; 400, spiral feeding mechanism; 410, feed hopper; 420, feeding assembly; 421, spiral rod; 422, I-shaped shaft; 423, driven gear; 500, screening cylinder; 510, ring frame No. 1; 520, ring frame No. 2; 530, ring frame No. 3; 540, ring frame No. 4; 550, ring frame No. 5; 560, ring frame No. 6 No. 1 ring frame; 570, screw rod assembly; 571, No. 1 threaded rod; 572, No. 2 threaded rod; 573, No. 3 threaded rod; 574, limit column; 580, connecting rod assembly; 501, No. 1 connecting frame; 502, No. 2 connecting frame; 503, No. 3 connecting frame; 504, No. 4 connecting frame; 500a1, No. 1 inner ring plate; 500a2, No. 2 inner ring plate; 500b, connecting plate; 500c, threading hole; 500d1, connecting hole; 500d2, hole No. 1; 500d3, hole No. 2; 500d4, hole No. 3; 500e, bearing; 5001, middle ring plate; 5002, side ring plate; 5003, movable area; 5004, threaded area; 5005, locking sleeve; 591, filter No. 1; 592, filter No. 2; 5901, adhesive; 5902, zipper; 600, rubber scraper. DETAILED DESCRIPTION
[0058] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example
[0059] See also Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6The present invention is an airflow screening device with controllable fineness of ultrafine powder, comprising a frame 100, a driving mechanism 200, a chassis 300, a spiral feeding mechanism 400 and a screening drum 500, wherein the driving mechanism 200 is fixed to one side of the frame 100, the chassis 300 is fixed to the top of the frame 100, a driving shaft 320 is connected to the inside of the chassis 300, a spiral feeding mechanism 400 is fixed to one side of the chassis 300, and the driving mechanism 200 is transmission-connected to the spiral feeding mechanism 400;
[0060] The interior of the chassis 300 is connected with a screening drum 500, which includes a No. 1 ring frame 510, a No. 2 ring frame 520, a No. 3 ring frame 530, a No. 4 ring frame 540, a No. 5 ring frame 550, a No. 6 ring frame 560 and a filter screen assembly, and the filter screen assembly includes a No. 1 filter screen 591 and a No. 2 filter screen 592. The No. 1 ring frame 510 and the No. 2 ring frame 520 are connected by the No. 1 filter screen 591, and the No. 1 ring frame 510 and the No. 2 ring frame 520, the No. 2 ring frame 520 and the No. 3 ring frame 530, and the No. 3 ring frame 530 and the No. 4 ring frame 550 are connected. 40, between the fourth ring frame 540 and the fifth ring frame 550, and between the fifth ring frame 550 and the sixth ring frame 560 are all connected by No. 2 filter screens 592 with different mesh apertures; the mesh aperture of the No. 1 filter screen 591 is larger than the mesh aperture of each No. 2 filter screen 592, and the mesh apertures of the No. 2 filter screens 592 between the No. 2 ring frame 520 and the No. 3 ring frame 530, between the No. 3 ring frame 530 and the No. 4 ring frame 540, between the No. 4 ring frame 540 and the No. 5 ring frame 550, and between the No. 5 ring frame 550 and the No. 6 ring frame 560 decrease in sequence.
[0061] Specifically, a glass top door 301 is connected to the top of the chassis 300 , and a first discharge port 302 and a second discharge port 303 are arranged at the bottom of the chassis 300 .
[0062] Furthermore, the driving mechanism 200 includes a driving seat 210, a servo motor 220, a driving gear 230 and a toothed belt 240. The servo motor 220 is fixed on the driving seat 210, the connecting end of the servo motor 220 is connected to the driving gear 230, and the outer part of the driving gear 230 is meshedly connected to the toothed belt 240.
[0063] The spiral feeding mechanism 400 includes a feed hopper 410 and a feeding assembly 420. The feeding assembly 420 is fixed inside the feed hopper 410. The feeding assembly 420 includes a spiral rod 421, an I-shaped shaft 422 and a driven gear 423. One end of the spiral rod 421 is fixed to the connecting cylinder 321, and the other end of the spiral rod 421 is fixed to the I-shaped shaft 422. The outer end of the I-shaped shaft 422 is fixed to the driven gear 423. The driven gear 423 and the driving gear 230 are connected through a toothed belt 240.
[0064] The operation process of this embodiment is as follows: when in use, the servo motor 220 drives the driving gear 230 to rotate, and the toothed belt 240 drives the driven gear 423 to rotate, thereby driving the driving shaft 320 and the screw rod 421 to rotate as a whole, and then driving the screening drum 500 to rotate synchronously;
[0065] When screening materials, the materials are directly put into the feed hopper 410, and are pushed into the screening drum 500 by the rotating screw rod 421. The high-speed rotation of the screening drum 500 causes the fine materials to be separated through the No. 2 filter screen 592 and discharged from the No. 1 discharge port 302, while the coarse materials are separated through the No. 1 filter screen 591 and discharged from the No. 2 discharge port 303, thereby completing the material screening operation. Example
[0066] See also Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13 On the basis of Example 1, a connecting cylinder 321 is fixed to the inner end of the driving shaft 320, a limiting ring 311 is fixed to the inner side surface of the center of the side door 310, and the size of the hollow area inside the limiting ring 311 matches the size of the end of the driving shaft 320; through holes 312 are evenly distributed in an annular shape on the side door 310, a motor cylinder 313 is fixed to the outside of each through hole 312, and a driving assembly 314 is fixed to the inside of each motor cylinder 313;
[0067] A first connecting frame 501 is fixed inside the first ring frame 510, a second connecting frame 502 is fixed inside the second ring frame 520, a third connecting frame 503 is fixed inside the third ring frame 530, the fourth ring frame 540 and the fifth ring frame 550, and a fourth connecting frame 504 is fixed inside the sixth ring frame 560;
[0068] The sixth ring frame 560 is movably connected with a screw assembly 570, which includes a first threaded rod 571, a second threaded rod 572 and a third threaded rod 573. The outer ends of the first threaded rod 571, the second threaded rod 572 and the third threaded rod 573 are all fixed with a limiting column 574. The cross-sectional diameters of the first threaded rod 571, the second threaded rod 572 and the third threaded rod 573 increase in sequence. The first threaded rod 571, the second threaded rod 572 and the third threaded rod 573 are respectively connected to the sixth ring frame 560 in a clockwise direction through the corresponding bearings 500e. The first threaded rod 571 and the corresponding driving assembly 314 are arranged one by one in correspondence with each other. The first threaded rod 571 and the corresponding driving assembly 314 jointly drive the third ring frame 530, the second threaded rod 572 and the corresponding driving assembly 314 jointly drive the fourth ring frame 540, and the third threaded rod 573 and the corresponding driving assembly 314 jointly drive the fifth ring frame 550.
[0069] A connecting rod assembly 580 is fixed between the No. 1 ring frame 510 and the No. 6 ring frame 560, and the connecting rod assembly 580 includes a group of connecting rods, which are evenly distributed in a ring shape, one end of each group of connecting rods is fixed to the No. 2 inner ring plate 500a2 of the No. 6 ring frame 560, and the other end of each group of connecting rods is fixed to the No. 1 inner ring plate 500a1 of the No. 1 ring frame 510, and one group of connecting rods crosses the through hole 500c of the No. 2 ring frame 520, the through hole 500c of the No. 3 ring frame 530, the through hole 500c of the No. 4 ring frame 540, and the through hole 500c of the No. 5 ring frame 550. The No. 2 ring frame 520 is fixed on the group of connecting rods, and the No. 3 ring frame 530, the No. 4 ring frame 540, and the No. 5 ring frame 550 are all movably installed on the group of connecting rods.
[0070] Specifically, the driving assembly 314 includes a driving motor 3141, a hydraulic rod 3142 and a limiting rod 3143. The connecting end of the driving motor 3141 is connected to the hydraulic rod 3142. The connecting end of the hydraulic rod 3142 is fixed to the limiting rod 3143 through a seat plate. The limiting rod 3143 matches the size of the limiting groove on the outer end surface of the limiting column 574.
[0071] The first connecting frame 501 includes a first inner ring plate 500a1, a connecting plate 500b and a connecting hole 500d1. The first inner ring plate 500a1 is fixed to the inner ring wall of the first ring frame 510 through a group of connecting plates 500b evenly distributed in an annular shape. Each connecting plate 500b is provided with a connecting hole 500d1.
[0072] The second connecting frame 502 includes a first inner ring plate 500a1, a connecting plate 500b, a through hole 500c and a connecting hole 500d1. The first inner ring plate 500a1 is fixed to the inner ring wall of the second ring frame 520 through a group of annularly evenly distributed connecting plates 500b. The first inner ring plate 500a1 is provided with a group of annularly evenly distributed through holes 500c, and each connecting plate 500b is provided with a connecting hole 500d1.
[0073] The third connecting frame 503 includes a first inner ring plate 500a1, a connecting plate 500b, a through hole 500c, a first hole 500d2, a second hole 500d3 and a third hole 500d4. The first inner ring plate 500a1 located in the third ring frame 530 is fixed to the inner ring wall of the third ring frame 530 through a group of annularly evenly distributed connecting plates 500b. The first inner ring plate 500a1 located in the fourth ring frame 540 is fixed to the inner ring wall of the fourth ring frame 540 through a group of annularly evenly distributed connecting plates 500b. The first inner ring plate 500a1 located in the fifth ring frame 550 is fixed to the inner ring wall of the fourth ring frame 540 through a group of annularly evenly distributed connecting plates 500b. a1 is fixed to the inner ring wall of the fifth ring frame 550 through a group of annularly evenly distributed connecting plates 500b, a group of annularly evenly distributed through holes 500c are opened on the first inner ring plate 500a1, and the connecting plate 500b is evenly distributed with a first hole 500d2, a second hole 500d3 and a third hole 500d4; the apertures of the first hole 500d2, the second hole 500d3 and the third hole 500d4 on the third ring frame 530 increase counterclockwise in sequence, and the apertures of the first hole 500d2, the second hole 500d3 and the third hole 500d4 on the fourth ring frame 540 increase counterclockwise in sequence. The apertures of the first hole 500d2, the second hole 500d3 and the third hole 500d4 on the fifth ring frame 550 increase counterclockwise in sequence; the aperture of the first hole 500d2 on the third ring frame 530 is smaller than the aperture of the first hole 500d2 on the fourth ring frame 540 and smaller than the aperture of the first hole 500d2 on the fifth ring frame 550; the aperture of the first hole 500d2 on the fourth ring frame 540 is the same as the aperture of the first hole 500d2 on the fifth ring frame 550; the aperture of the second hole 500d3 on the fourth ring frame 540 is smaller than the aperture of the first hole 500d2 on the fifth ring frame 550; the aperture of the second hole 500d3 on the fourth ring frame 540 is smaller than the aperture of the first hole 500d2 on the fifth ring frame 550; the aperture of the second hole 500d3 on the fourth ring frame 540 is smaller than the aperture of the first hole 500d2 on the fifth ring frame 550; the aperture of the second hole 500d4 ... first hole 500d2 on the fourth ring frame 540 is smaller The diameter of the second hole 500d3 on the third ring frame 530 is smaller than the diameter of the second hole 500d3 on the fifth ring frame 550, and the diameter of the second hole 500d3 on the third ring frame 530 is the same as the diameter of the second hole 500d3 on the fifth ring frame 550; the diameter of the third hole 500d4 on the fifth ring frame 550 is smaller than the diameter of the third hole 500d4 on the fourth ring frame 540 and smaller than the diameter of the third hole 500d4 on the third ring frame 530, and the diameter of the third hole 500d4 on the fourth ring frame 540 is the same as the diameter of the third hole 500d4 on the third ring frame 530;
[0074] The fourth connecting frame 504 includes a No. 2 inner ring plate 500a2, a connecting plate 500b, and a bearing 500e. The No. 2 inner ring plate 500a2 is fixed to the inner ring wall of the No. 6 ring frame 560 through a group of annularly evenly distributed connecting plates 500b. The No. 2 inner ring plate 500a2 is connected to the connecting tube 321 by a threaded structure, and each connecting plate 500b is connected to a bearing 500e.
[0075] Further, the No. 1 threaded rod 571 synchronously crosses the No. 1 hole 500d2 on the No. 3 ring frame 530, the No. 1 hole 500d2 on the No. 4 ring frame 540, and the No. 1 hole 500d2 on the No. 5 ring frame 550, and the No. 1 threaded rod 571 is threadedly connected with the No. 1 hole 500d2 on the No. 3 ring frame 530, and the No. 1 threaded rod 571 is movably connected with the No. 1 hole 500d2 on the No. 4 ring frame 540 and the No. 1 hole 500d2 on the No. 5 ring frame 550;
[0076] The second threaded rod 572 synchronously crosses the second hole 500d3 on the third ring frame 530, the second hole 500d3 on the fourth ring frame 540, and the second hole 500d3 on the fifth ring frame 550. The second threaded rod 572 is threadedly connected with the second hole 500d3 on the fourth ring frame 540. The second threaded rod 572 is movably connected with the second hole 500d3 on the third ring frame 530 and the second hole 500d3 on the fifth ring frame 550.
[0077] The third threaded rod 573 synchronously crosses the third hole 500d4 on the third ring frame 530, the third hole 500d4 on the fourth ring frame 540 and the third hole 500d4 on the fifth ring frame 550. The third threaded rod 573 is threadedly connected with the third hole 500d4 on the fifth ring frame 550. The third threaded rod 573 is movably connected with the third hole 500d4 on the third ring frame 530 and the third hole 500d4 on the fourth ring frame 540.
[0078] The operation process of this embodiment is as follows: when in use, the hydraulic rod 3142 in the driving assembly 314 drives the limiting rod 3143 to pass through the through hole 312 of the side door 310 and be inserted into the limiting groove of the corresponding limiting column 574, and then the driving motor 3141 in the driving assembly 314 immediately drives the limiting rod 3143 and the limiting column 574 to rotate, thereby driving the corresponding No. 1 threaded rod 571, No. 2 threaded rod 572 or No. 3 threaded rod 573 to rotate;
[0079] When the No. 2 filter screen 592 between the No. 3 ring frame 530 and the No. 4 ring frame 540 needs to be unfolded for use, the No. 1 threaded rod 571 is driven to rotate by the corresponding driving assembly 314, which drives the No. 3 ring frame 530 to move horizontally to a position close to the No. 2 ring frame 520. When the No. 3 ring frame 530 moves to a preset displacement, the No. 2 filter screen 592 between the No. 3 ring frame 530 and the No. 4 ring frame 540 is in an unfolded and tightened state, while the remaining No. 2 filter screens 592 are in a folded and stored state. At this time, the No. 2 filter screen 592 between the No. 3 ring frame 530 and the No. 4 ring frame 540 can be unfolded for screening use;
[0080] When it is necessary to unfold the No. 2 filter screen 592 between the No. 4 ring frame 540 and the No. 5 ring frame 550 for use, first remove the No. 3 ring frame 530 in the same manner as described above, and then drive the No. 2 threaded rod 572 to rotate through the corresponding driving assembly 314, which will drive the No. 4 ring frame 540 to move horizontally to a position close to the No. 3 ring frame 530. When the No. 4 ring frame 540 moves to a preset displacement, the No. 2 filter screen 592 between the No. 4 ring frame 540 and the No. 5 ring frame 550 is in an unfolded and tightened state, while the remaining No. 2 filter screens 592 are in a folded and stored state. At this time, the No. 2 filter screen 592 between the No. 4 ring frame 540 and the No. 5 ring frame 550 can be unfolded for screening use;
[0081] When it is necessary to unfold the No. 2 filter net 592 between the No. 5 ring frame 550 and the No. 6 ring frame 560 for use, first remove the No. 3 ring frame 530 and the No. 4 ring frame 540 in the same manner as described above, and then drive the No. 3 threaded rod 573 to rotate through the corresponding driving assembly 314, which will drive the No. 5 ring frame 550 to move horizontally to the position close to the No. 4 ring frame 540. When the No. 5 ring frame 550 moves to the preset displacement, the No. 2 filter net 592 between the No. 5 ring frame 550 and the No. 6 ring frame 560 is in an unfolded and tightened state, and the remaining No. 2 filter nets 592 are in a folded and stored state. At this time, the No. 2 filter net 592 between the No. 5 ring frame 550 and the No. 6 ring frame 560 can be unfolded for screening.
[0082] When in use, according to the use requirements, in accordance with the above method, the corresponding No. 2 filter screen 592 can be unfolded to change the fineness of the fine material output;
[0083] When it is necessary to install the screening drum 500, open the side door 310, and directly insert the screening drum 500 as a whole onto the drive shaft 320; when the No. 6 ring frame 560 reaches the connecting cylinder 321, immediately twist the screening drum 500 as a whole, so that the No. 2 inner ring plate 500a2 of the No. 6 ring frame 560 is threadedly connected to the connecting cylinder 321; then close the side door 310 and lock it; at this time, the outer end of the drive shaft 320 is just inserted into the limiting ring 311, and the installation of the screening drum 500 is completed. Example
[0084] See also Figure 2 , Figure 3 , Figure 4 , Fig.10 , Fig.11 , Fig.12 , Fig.13 , Fig.15 , Fig.16 and Fig.17 On the basis of Example 1 and Example 2, the No. 1 connecting frame 501, the No. 2 connecting frame 502, the No. 3 connecting frame 503 and the No. 4 connecting frame 504 all include a middle ring plate 5001, a side ring plate 5002, an active area 5003, a threaded area 5004 and a locking sleeve 5005. Side ring plates 5002 are fixed on both sides of the middle ring plate 5001. The active area 5003 is arranged on the inner side of the side ring plate 5002. The threaded area 5004 is arranged on the outer side of the side ring plate 5002. The locking sleeve 5005 is sleeved on the active area 5003 and movably connected. The inner edge of the opening of the locking sleeve 5005 is provided with an internal thread, and the internal thread of the locking sleeve 5005 matches the threaded area 5004 of the side ring plate 5002.
[0085] Specifically, adhesive 5901 is fixed to the inner walls of both sides of the filter net No. 1 591 and the filter net No. 2 592 , and the peripheral sides of the filter net No. 1 591 and the peripheral sides of the filter net No. 2 592 are spliced together by a zipper 5902 .
[0086] Furthermore, a side door 310 is movably connected to one side of the chassis 300, and the opening position of the side door 310 is locked and limited by a door lock.
[0087] The operation process of this embodiment is as follows: when the No. 1 filter 591 needs to be replaced, the side door 310 is first opened, and then the locking sleeves 5005 on the corresponding sides of the No. 1 ring frame 510 and the No. 2 ring frame 520 are twisted so that the locking sleeves 5005 corresponding to the No. 1 ring frame 510 and the No. 2 ring frame 520 are separated from their corresponding threaded areas 5004, and then the zipper 5902 on the No. 1 filter 591 is pulled open, and the No. 1 filter 591 can be torn off and taken out from the glass top door 301;
[0088] When installing a new No. 1 filter screen 591, directly stick the adhesive 5901 on one side of the No. 1 filter screen 591 to the side ring plate 5002 on the side corresponding to the No. 1 ring frame 510 and the No. 2 ring frame 520, then pull the zipper 5902 on the No. 1 filter screen 591 to close the No. 1 filter screen 591, ensuring that the No. 1 filter screen 591 is wrapped around the outside of the driving shaft 320, and then tighten the locking sleeves 5005 on the side corresponding to the No. 1 ring frame 510 and the No. 2 ring frame 520 respectively, and use the locking sleeves 5005 to lock the No. 1 filter screen 591 on the side ring plate 5002, and the No. 1 filter screen 591 can be installed;
[0089] The methods of replacing the No. 2 filter screen 592 between the No. 2 ring frame 520 and the No. 3 ring frame 530, the No. 2 filter screen 592 between the No. 3 ring frame 530 and the No. 4 ring frame 540, the No. 2 filter screen 592 between the No. 4 ring frame 540 and the No. 5 ring frame 550, the No. 5 ring frame 550 and the No. 2 filter screen 592 between the No. 6 ring frame 560 are all the same as the above-mentioned method of replacing the No. 1 filter screen 591, and the same method as above can be followed. Example
[0090] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 and Fig.14 On the basis of Example 1, Example 2 and Example 3, a rubber scraper 600 is fixed to the middle ring plate 5001 of the third ring frame 530, the middle ring plate 5001 of the fourth ring frame 540 and the middle ring plate 5001 of the fifth ring frame 550 by screws, and the rubber scraper 600 is in contact with the glass top door 301.
[0091] The operation process of this embodiment is as follows: when the rubber scraper 600 needs to be replaced or installed during use, the glass top door 301 is opened to install or remove the rubber scraper 600;
[0092] When installing or removing the rubber scraper 600, use screws to install the rubber scraper 600 on the middle ring plate 5001 of the third ring frame 530, the middle ring plate 5001 of the fourth ring frame 540, and the middle ring plate 5001 of the fifth ring frame 550;
[0093] During the screening process, through the driving action of the corresponding driving assembly 314 and the screw assembly 570, each time the corresponding No. 3 ring frame 530, No. 4 ring frame 540 or No. 5 ring frame 550 is driven to move, the rubber scraper 600 on the No. 3 ring frame 530, No. 4 ring frame 540 or No. 5 ring frame 550 will horizontally scrape across the glass top door 301, so as to clean the inner wall of the glass top door 301 and prevent the glass top door 301 from being seriously accumulated and affecting the operator's observation of the screening situation inside the chassis 300.
[0094] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0095] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.
Claims
1. An airflow screening device for ultrafine powder with controllable fineness, comprising a frame (100), a driving mechanism (200), a chassis (300), a spiral feeding mechanism (400) and a screening drum (500); characterized in that: A driving mechanism (200) is fixed to one side of the frame (100), a chassis (300) is fixed to the top of the frame (100), a screw feeding mechanism (400) is fixed to one side of the chassis (300), the driving mechanism (200) is transmission-connected to the screw feeding mechanism (400), and a screening drum (500) is connected inside the chassis (300); A side door (310) is movably connected to one side of the chassis (300); the opening position of the side door (310) is locked and limited by a door lock; a drive shaft (320) is connected to the inside of the chassis (300); a connecting cylinder (321) is fixed to the inner end of the drive shaft (320); A limiting ring (311) is fixed to the inner side surface at the center of the side door (310), and the size of the hollow area inside the limiting ring (311) matches the size of the end of the driving shaft (320); The side door (310) is provided with through holes (312) evenly distributed in a ring shape, a motor cylinder (313) is fixed to the outside of each through hole (312), a driving assembly (314) is fixed inside each motor cylinder (313), the driving assembly (314) comprises a driving motor (3141), a hydraulic rod (3142) and a limiting rod (3143), the connecting end of the driving motor (3141) is connected to the hydraulic rod (3142), and the connecting end of the hydraulic rod (3142) is fixed to the limiting rod (3143) via a seat plate; The screening cylinder (500) comprises a first ring frame (510), a second ring frame (520), a third ring frame (530), a fourth ring frame (540), a fifth ring frame (550), a sixth ring frame (560), a screw assembly (570), a connecting rod assembly (580) and a filter screen assembly, wherein the filter screen assembly comprises a first filter screen (591) and a second filter screen (592), wherein the first ring frame (510) and the second ring frame (520) are connected via the first filter screen (591), and the first ring frame (510) and the second ring frame (520) are connected via the first filter screen (591). The first ring frame (510) and the second ring frame (520), the second ring frame (520) and the third ring frame (530), the third ring frame (530) and the fourth ring frame (540), the fourth ring frame (540) and the fifth ring frame (550), and the fifth ring frame (550) and the sixth ring frame (560) are all connected via a second filter screen (592) with different mesh apertures; the sixth ring frame (560) is movably connected with a screw assembly (570); and a connecting rod assembly (580) is fixed between the first ring frame (510) and the sixth ring frame (560); The screw rod assembly (570) comprises a first threaded rod (571), a second threaded rod (572) and a third threaded rod (573); the outer ends of the first threaded rod (571), the second threaded rod (572) and the third threaded rod (573) are all fixed with a limiting column (574); the limiting rod (3143) matches the limiting groove size of the outer end surface of the limiting column (574); the cross-sectional diameters of the first threaded rod (571), the second threaded rod (572) and the third threaded rod (573) increase in sequence; the first threaded rod (571), the second threaded rod (572) and the third threaded rod (573) are connected to the first threaded rod (571), the second threaded rod (572) and the third threaded rod (573); 573) are movably connected to the sixth ring frame (560) in a clockwise direction through the corresponding bearings (500e), the first threaded rod (571), the second threaded rod (572) and the third threaded rod (573) are arranged in a one-to-one correspondence with the respective drive assemblies (314), the first threaded rod (571) and the corresponding drive assembly (314) jointly drive the third ring frame (530), the second threaded rod (572) and the corresponding drive assembly (314) jointly drive the fourth ring frame (540), and the third threaded rod (573) and the corresponding drive assembly (314) jointly drive the fifth ring frame (550); The mesh aperture of the No. 1 filter screen (591) is larger than the mesh aperture of each No. 2 filter screen (592), and the mesh aperture of the No. 2 filter screen (592) between the No. 2 ring frame (520) and the No. 3 ring frame (530), between the No. 3 ring frame (530) and the No. 4 ring frame (540), between the No. 4 ring frame (540) and the No. 5 ring frame (550), and between the No. 5 ring frame (550) and the No. 6 ring frame (560) decreases in sequence; The inner walls of both sides of the No. 1 filter screen (591) and the No. 2 filter screen (592) are fixed with adhesive (5901), and the peripheral side of the No. 1 filter screen (591) and the peripheral side of the No. 2 filter screen (592) are spliced together by a zipper (5902); The first connecting frame (501) is fixed inside the first ring frame (510), the second connecting frame (502) is fixed inside the second ring frame (520), the third connecting frame (503) is fixed inside the third ring frame (530), the fourth ring frame (540) and the fifth ring frame (550), the fourth connecting frame (504) is fixed inside the sixth ring frame (560), and the first connecting frame (501), the second connecting frame (502), the third connecting frame (503) and the fourth connecting frame (504) all include a middle ring plate (5001), a side ring plate (5002), a movable A region (5003), a threaded region (5004) and a locking sleeve (5005), side ring plates (5002) are fixed on both sides of the middle ring plate (5001), an active region (5003) is arranged on the inner side of the side ring plate (5002), a threaded region (5004) is arranged on the outer side of the side ring plate (5002), a locking sleeve (5005) is sleeved on the active region (5003) and movably connected, an inner edge of the opening of the locking sleeve (5005) is provided with an internal thread, and the internal thread of the locking sleeve (5005) matches the threaded region (5004) of the side ring plate (5002); A rubber scraper (600) is fixed on the middle ring plate (5001) of the third ring frame (530), the middle ring plate (5001) of the fourth ring frame (540), and the middle ring plate (5001) of the fifth ring frame (550) by screws, and the rubber scraper (600) is in contact with the glass top door (301).
2. The airflow screening device for ultrafine powder with controllable fineness according to claim 1, characterized in that: The top of the chassis (300) is connected to a glass top door (301), and the bottom of the chassis (300) is provided with a first discharge port (302) and a second discharge port (303).
3. The airflow screening device for ultrafine powder with controllable fineness according to claim 1, characterized in that: The driving mechanism (200) comprises a driving seat (210), a servo motor (220), a driving gear (230) and a toothed belt (240); the servo motor (220) is fixed on the driving seat (210); the connecting end of the servo motor (220) is connected to the driving gear (230); the outer portion of the driving gear (230) is meshedly connected to the toothed belt (240); The spiral feeding mechanism (400) comprises a feeding hopper (410) and a feeding assembly (420), wherein the feeding hopper (410) has a feeding assembly (420) fixed inside. The feeding assembly (420) comprises a screw rod (421), an I-shaped shaft (422) and a driven gear (423); one end of the screw rod (421) is fixed to the connecting cylinder (321); the other end of the screw rod (421) is fixed to the I-shaped shaft (422); the outer end of the I-shaped shaft (422) is fixed to the driven gear (423); the driven gear (423) and the driving gear (230) are connected to each other via a toothed belt (240).
4. The airflow screening device for ultrafine powder with controllable fineness according to claim 3, characterized in that: The No. 1 connecting frame (501) comprises a No. 1 inner ring plate (500a1), a connecting plate (500b) and a connecting hole (500d1); the No. 1 inner ring plate (500a1) is fixed to the inner ring wall of the No. 1 ring frame (510) via a group of connecting plates (500b) evenly distributed in an annular pattern; each of the connecting plates (500b) is provided with a connecting hole (500d1); The second connecting frame (502) comprises a first inner ring plate (500a1), a connecting plate (500b), a through hole (500c) and a connecting hole (500d1); the first inner ring plate (500a1) is fixed to the inner ring wall of the second ring frame (520) via a group of annularly evenly distributed connecting plates (500b); the first inner ring plate (500a1) is provided with a group of annularly evenly distributed through holes (500c); and each of the connecting plates (500b) is provided with a connecting hole (500d1); The fourth connecting frame (504) comprises a second inner ring plate (500a2), a connecting plate (500b), and a bearing (500e); the second inner ring plate (500a2) is fixed to the inner ring wall of the sixth ring frame (560) via a group of connecting plates (500b) evenly distributed in an annular pattern; the second inner ring plate (500a2) is connected to the connecting tube (321) via a threaded structure; and each connecting plate (500b) is connected to a bearing (500e).
5. The airflow screening device for ultrafine powder with controllable fineness according to claim 4, characterized in that: The No. 3 connecting frame (503) comprises a No. 1 inner ring plate (500a1), a connecting plate (500b), a through hole (500c), a No. 1 hole (500d2), a No. 2 hole (500d3) and a No. 3 hole (500d4); the No. 1 inner ring plate (500a1) located in the No. 3 ring frame (530) is fixed to the inner ring wall of the No. 3 ring frame (530) via a group of annularly evenly distributed connecting plates (500b); the No. 1 inner ring plate (500a1) located in the No. 4 ring frame (540) is fixed to the inner ring wall of the No. 3 ring frame (530) via a group of annularly evenly distributed connecting plates (500b); The evenly distributed connecting plates (500b) are fixed on the inner ring wall of the fourth ring frame (540); the first inner ring plate (500a1) located in the fifth ring frame (550) is fixed on the inner ring wall of the fifth ring frame (550) through a group of evenly distributed connecting plates (500b) in an annular manner; the first inner ring plate (500a1) is provided with a group of evenly distributed through holes (500c) in an annular manner; and the connecting plate (500b) is evenly distributed with a first hole (500d2), a second hole (500d3) and a third hole (500d4); The diameters of the first hole (500d2), the second hole (500d3) and the third hole (500d4) on the third ring frame (530) increase counterclockwise in sequence; the diameters of the first hole (500d2), the second hole (500d3) and the third hole (500d4) on the fourth ring frame (540) increase counterclockwise in sequence; and the diameters of the first hole (500d2), the second hole (500d3) and the third hole (500d4) on the fifth ring frame (550) increase counterclockwise in sequence.
6. The airflow screening device for ultrafine powder with controllable fineness according to claim 5, characterized in that: The diameter of the first hole (500d2) on the third ring frame (530) is smaller than the diameter of the first hole (500d2) on the fourth ring frame (540) and smaller than the diameter of the first hole (500d2) on the fifth ring frame (550); the diameter of the first hole (500d2) on the fourth ring frame (540) is the same as the diameter of the first hole (500d2) on the fifth ring frame (550); The diameter of the second hole (500d3) on the fourth ring frame (540) is smaller than the diameter of the second hole (500d3) on the third ring frame (530) and smaller than the diameter of the second hole (500d3) on the fifth ring frame (550); the diameter of the second hole (500d3) on the third ring frame (530) is the same as the diameter of the second hole (500d3) on the fifth ring frame (550); The diameter of the third hole (500d4) on the fifth ring frame (550) is smaller than the diameter of the third hole (500d4) on the fourth ring frame (540) and smaller than the diameter of the third hole (500d4) on the third ring frame (530), and the diameter of the third hole (500d4) on the fourth ring frame (540) is the same as the diameter of the third hole (500d4) on the third ring frame (530).
7. The airflow screening device for ultrafine powder with controllable fineness according to claim 6, characterized in that: The No. 1 threaded rod (571) synchronously crosses the No. 1 hole (500d2) on the No. 3 ring frame (530), the No. 1 hole (500d2) on the No. 4 ring frame (540), and the No. 1 hole (500d2) on the No. 5 ring frame (550); the No. 1 threaded rod (571) is threadedly connected to the No. 1 hole (500d2) on the No. 3 ring frame (530); the No. 1 threaded rod (571) is movably connected to the No. 1 hole (500d2) on the No. 4 ring frame (540) and the No. 1 hole (500d2) on the No. 5 ring frame (550); The second threaded rod (572) synchronously crosses the second hole (500d3) on the third ring frame (530), the second hole (500d3) on the fourth ring frame (540), and the second hole (500d3) on the fifth ring frame (550); the second threaded rod (572) is threadedly connected to the second hole (500d3) on the fourth ring frame (540); the second threaded rod (572) is movably connected to the second hole (500d3) on the third ring frame (530) and the second hole (500d3) on the fifth ring frame (550); The No. 3 threaded rod (573) synchronously crosses the No. 3 hole (500d4) on the No. 3 ring frame (530), the No. 3 hole (500d4) on the No. 4 ring frame (540), and the No. 3 hole (500d4) on the No. 5 ring frame (550); the No. 3 threaded rod (573) is threadedly connected to the No. 3 hole (500d4) on the No. 5 ring frame (550); the No. 3 threaded rod (573) is movably connected to the No. 3 hole (500d4) on the No. 3 ring frame (530) and the No. 3 hole (500d4) on the No. 4 ring frame (540).
8. The airflow screening device for ultrafine powder with controllable fineness according to claim 7, characterized in that: The connecting rod assembly (580) comprises a group of connecting rods, the group of connecting rods being evenly distributed in a ring shape, one end of each of the group of connecting rods being fixed to the second inner ring plate (500a2) of the sixth ring frame (560), the other end of each of the group of connecting rods being fixed to the first inner ring plate (500a1) of the first ring frame (510), the group of connecting rods passing through the through hole (500c) of the second ring frame (520), the through hole (500c) of the third ring frame (530), the through hole (500c) of the fourth ring frame (540) and the through hole (500c) of the fifth ring frame (550), the second ring frame (520) being fixed to the group of connecting rods, the third ring frame (530), the fourth ring frame (540) and the fifth ring frame (550) being movably mounted on the group of connecting rods.
Citation Information
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