Powder vibration screening machine

Abstract

The invention relates to the technical field of screening machines, and particularly discloses a powder vibrating screening machine which comprises a lower screening cylinder and an upper screening cylinder, a first filter screen is arranged in the upper screening cylinder, a material distributing mechanism is arranged in the upper screening cylinder, and a transmission mechanism is installed on the material distributing mechanism. The material distributing mechanism comprises a material scattering mechanism located in the upper screening barrel, an extrusion mechanism installed on the outer side of the material scattering mechanism and a baffle installed on the inner wall of the upper screening barrel, the baffle is located on the outer side of the extrusion mechanism, and the baffle is provided with a bevel edge obliquely extending to the inner wall of the upper screening barrel; according to the powder vibration screening machine, the transmission mechanism drives the connecting plate and the material distributing piece to eccentrically rotate through the fixed disc, materials are scattered and fall down, concentrated accumulation of the materials is prevented, the fixed disc drives the movable plate to eccentrically rotate in the rotating process, and at the moment, the movable plate extrudes caked materials located between the movable plate and the baffle so as to extrude the caked materials; the labor cost is reduced, and meanwhile the material screening efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of screening machines, and in particular to a powder vibrating screening machine. Background Art

[0002] Non-dairy creamer, also known as creamer, is a mixture of hydrogenated vegetable oil and some food additives. Its main ingredients are hydrogenated vegetable oil, emulsifier, glucose syrup and sodium caseinate. Non-dairy creamer is found in common brewed coffee, beverages and various snacks on the market. It plays a special role in food production and processing. It is also a modern food. Non-dairy creamer can be produced into low-fat, medium-fat and high-fat products according to the different needs of users and their standards. During the processing of non-dairy creamer, the processed non-dairy creamer powder needs to be sieved according to demand to facilitate the packaging of the non-dairy creamer.

[0003] A Chinese patent document with authorization announcement number CN112855054B discloses a magnetic levitation driven rotary vibrating screen with a screen cleaning function. The magnetic levitation driven rotary vibrating screen with a screen cleaning function has the characteristics of long screen service life, easy replacement, higher screening efficiency and accuracy, good particle screening effect, and material is not easy to accumulate. It has a good screen cleaning effect and high screening efficiency. It has the characteristics of small footprint, easy mobility and high degree of customization, closed space, not easy to leak, continuous operation and high production efficiency.

[0004] However, the structural design of the above-mentioned related technology: although the screen can be cleaned, when screening the material, some agglomerated materials are difficult to pass through the mesh holes of the screen. These agglomerated materials not only occupy the mesh holes and increase the screening time, but the agglomerated materials can only be discharged from the screen in the end, and then screened again after being crushed, which increases the labor cost and easily affects the screening efficiency of the material.

[0005] Therefore a powder vibrating screening machine is proposed to solve the above-mentioned problems. Summary of the invention

[0006] The invention provides a powder vibrating screening machine, aiming to solve the problem in the related art that agglomerated materials are prone to affect the screening efficiency of the materials.

[0007] The powder vibrating screening machine of the present invention comprises a lower screening cylinder and an upper screening cylinder, wherein a filter screen is arranged inside the upper screening cylinder, a material dividing mechanism is arranged inside the upper screening cylinder, and a transmission mechanism is installed on the material dividing mechanism; The material distribution mechanism includes a material spreading mechanism located in the upper screening cylinder, an extrusion mechanism installed outside the material spreading mechanism, and a baffle installed on the inner wall of the upper screening cylinder, wherein the baffle is located outside the extrusion mechanism and has an inclined edge extending obliquely to the inner wall of the upper screening cylinder to guide the material to be discharged from the upper screening cylinder; The material spreading mechanism includes a fixed disk, a plurality of connecting plates installed outside the fixed disk, and a material spreading sheet installed at the end of the connecting plate. The transmission mechanism is connected to the fixed disk to drive the fixed disk to rotate eccentrically. The extrusion mechanism includes a movable plate installed on the outside of the fixed plate. The movable plate is a ring with a notch and is located on the inner side of the baffle. The movable plate contacts the filter screen in the upper screening cylinder. The fixed plate drives the connecting plate and the material dividing sheet to rotate eccentrically to prevent the material from being concentrated and accumulated. At the same time, the movable plate squeezes the agglomerated material between the movable plate and the baffle to disperse the agglomerated material.

[0008] During screening, the material falls from above the fixed plate. At this time, the transmission mechanism drives the connecting plate and the dividing plate to rotate eccentrically through the fixed plate, so that the material is dispersed and falls to prevent the material from being concentrated and accumulated. During the rotation of the fixed plate, the movable plate drives the movable plate to rotate eccentrically. At this time, the movable plate squeezes the agglomerated material between the movable plate and the baffle to disperse the agglomerated material.

[0009] Preferably, a fixed cover is installed on the inner bottom of the movable plate, and a plurality of vibrating balls are arranged inside the fixed cover.

[0010] The vibrating ball in the fixed cover can cause a knocking effect on the material when the movable plate squeezes the material, so as to further improve the dispersion effect of the agglomerated material.

[0011] Preferably, an adjusting mechanism is installed on the extrusion mechanism, a scraping mechanism is installed on the adjusting mechanism, and a limiting mechanism for adjusting the height of the scraping mechanism is installed between the transmission mechanism and the spreading mechanism.

[0012] Preferably, the scraping mechanism comprises a scraper and a connecting rod, the bottom end of the connecting rod is mounted on the scraper, and the top end of the connecting rod is arranged on the adjusting mechanism.

[0013] By providing a scraper, the material moved out from the notch of the movable plate can be blocked during the rotation of the movable plate, so as to push the material into between the movable plate and the baffle plate, thereby facilitating better extrusion of the agglomerated material.

[0014] Preferably, the adjustment mechanism includes a mounting seat installed on the movable plate, a mounting frame sliding inside the mounting seat and a guide rod installed in the mounting frame, the mounting seat is located above the baffle, and the connecting rod is elastically slidably arranged on the guide rod along the lateral direction.

[0015] The scraper can be extended and retracted by elastically sliding the connecting rod on the guide rod.

[0016] Preferably, two slide bars are installed on the top of the mounting frame, and a lifting plate is installed on one end of the slide bar that passes through the top of the mounting frame, and a ball that can roll on the limiting mechanism is provided on the lifting plate.

[0017] Preferably, the limiting mechanism comprises a mounting plate and a limiting plate mounted on the bottom end of the mounting plate, the limiting plate is semicircular in shape, and one end of the limiting plate close to the bevel of the baffle has a downwardly inclined slope.

[0018] After the ball moves to the limit plate, the sliding rod on the lifting plate can drive the scraper to move up, so that the scraper stops pushing the material, avoiding the agglomerated material from being directly moved out from between the movable plate and the baffle without being squeezed, so as to better squeeze the agglomerated material.

[0019] Preferably, the transmission mechanism includes a gear ring, a connecting rod and a gear, the gear ring is rotatably connected to the mounting plate, the connecting rod is installed on the inner side of the gear ring, the connecting rod is installed at the top edge position of the fixed plate, and the gear is meshingly connected to one side of the gear ring.

[0020] By adopting the above technical scheme, the beneficial effects of the present invention are as follows: when the material falls from above the fixed disk, the transmission mechanism drives the connecting plate and the material dividing plate to rotate eccentrically through the fixed disk, so that the material is dispersed and falls to prevent the material from being concentrated and accumulated. During the rotation process, the fixed disk drives the movable plate to rotate eccentrically. At this time, the movable plate squeezes the agglomerated material between the movable plate and the baffle to disperse the agglomerated material, thereby reducing labor costs and improving the screening efficiency of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the present invention.

[0022] Figure 2 It is a schematic diagram of the internal structure of the screening mechanism in a specific embodiment of the present invention.

[0023] Figure 3 It is a structural schematic diagram of a material dispensing mechanism in a specific embodiment of the present invention.

[0024] Figure 4 It is a schematic diagram of the exploded structure of the material distribution mechanism and the transmission mechanism in a specific embodiment of the present invention.

[0025] Figure 5 It is a schematic cross-sectional structure diagram of a fixed cover according to a specific embodiment of the present invention.

[0026] Figure 6 It is a schematic diagram of the internal structure of a mounting base in a specific embodiment of the present invention.

[0027] Figure 7 It is a schematic structural diagram of a limiting mechanism in a specific embodiment of the present invention.

[0028] Reference numerals: 10. Screening mechanism; 11. Receiving cylinder; 12. Receiving hopper; 13. Lower screening cylinder; 14. Lower discharge nozzle; 15. Upper screening cylinder; 16. Upper discharge nozzle; 17. Mounting cover; 18. Feeding hopper; 19. Motor; 20. Vibration mechanism; 21. Base; 22. Spring 1; 23. Support seat; 24. Vibrator; 30. Material distribution mechanism; 31. Material spreading mechanism; 311. Fixed plate; 312. Connecting plate; 313. Material distribution sheet; 314. Fixed frame; 32. Extrusion mechanism; 321. Movable plate; 322. Fixed cover; 323. Vibrating ball; 33. Adjustment mechanism; 331. Mounting seat; 332. Mounting frame; 333. Guide rod; 334. Spring 2; 335. Sliding rod; 336. Lifting plate; 337. Ball; 34. Scraping mechanism; 341. Scraping plate; 342. Connecting rod; 343. Sliding block; 35. Baffle; 36. Bracket; 40. Transmission mechanism; 41. Gear ring; 42. Fixed plate; 43. Connecting rod; 44. Gear; 45. Rotating shaft; 50. Limiting mechanism; 51. Mounting plate; 52. Limiting plate. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0030] like Figures 1 to 7 As shown, the powder vibrating screening machine of the present invention comprises a screening mechanism 10, a vibrating mechanism 20, a material dividing mechanism 30, a transmission mechanism 40 and a limiting mechanism 50. The vibrating mechanism 20 is installed at the bottom of the screening mechanism 10, the material dividing mechanism 30 is arranged above the inside of the screening mechanism 10, and the transmission mechanism 40 is installed on the material dividing mechanism 30 and is located on the top of the limiting mechanism 50.

[0031] like Figure 1 to Figure 2 As shown, the screening mechanism 10 includes a receiving drum 11, a lower screening drum 13, an upper screening drum 15 and a mounting cover 17. The receiving drum 11, the lower screening drum 13, the upper screening drum 15 and the mounting cover 17 are sequentially connected from bottom to top, and adjacent two are fixed by a clamping ring.

[0032] Continue to refer Figure 1 to Figure 2 As shown, a receiving hopper 12 is installed on the inner wall of the receiving cylinder 11, a lower discharge nozzle 14 is installed on one side of the lower screening cylinder 13, an upper discharge nozzle 16 is installed on one side of the upper screening cylinder 15, the material dividing mechanism 30 is located inside the upper screening cylinder 15, a filter screen 2 is installed on the inner wall of the lower screening cylinder 13 near the bottom of the lower discharge nozzle 14, and a filter screen 1 is installed on the inner wall of the upper screening cylinder 15 near the bottom of the upper discharge nozzle 16.

[0033] Continue to refer Figure 1 to Figure 2 As shown, a hopper 18 for discharging materials into the upper screening cylinder 15 is installed at the top of the mounting cover 17, and a motor 19 is installed on one side of the top of the mounting cover 17. A transmission mechanism 40 is connected to the driving shaft of the motor 19. The motor 19 can drive the distribution mechanism 30 to operate through the transmission mechanism 40. When the distribution mechanism 30 is in operation, it can disperse the fallen materials and crush the agglomerated materials to improve the screening efficiency.

[0034] Continue to refer Figure 1 to Figure 2 As shown, the vibration mechanism 20 includes a base 21, a spring 22, a support base 23 and a vibrator 24. There are four springs 22, which are respectively installed at the four corners of the top of the base 21, and the bottom of the support base 23 is installed on the top of the spring 22. The top of the support base 23 is installed at the bottom end of the receiving barrel 11, and the bottom end of the receiving hopper 12 passes through the bottom end of the support base 23 and extends to the outside of the support base 23 to discharge the screened materials. There are two vibrators 24, which are respectively installed on both sides of the support base 23.

[0035] like Figures 1 to 3 As shown, the material distribution mechanism 30 includes a material spreading mechanism 31, an extrusion mechanism 32 and a baffle 35. The material spreading mechanism 31 is installed on the inner side of the extrusion mechanism 32 and connected to the transmission mechanism 40, the baffle 35 is located on the outer side of the extrusion mechanism 32, the extrusion mechanism 32 is installed with an adjustment mechanism 33, and the adjustment mechanism 33 is installed with a scraping mechanism 34.

[0036] When the transmission mechanism 40 is in operation, it can drive the spreading mechanism 31 to rotate eccentrically to disperse the material discharged from the feeding hopper 18 and prevent the material from accumulating on the filter screen 1 of the upper screening cylinder 15. At the same time, the spreading mechanism 31 can drive the extrusion mechanism 32 to rotate synchronously. During the rotation of the extrusion mechanism 32, the agglomerated material between the baffle 35 and the extrusion mechanism 32 can be squeezed out to prevent the agglomerated material from occupying the mesh holes on the filter screen 1.

[0037] like Figures 2 to 5 As shown, the material spreading mechanism 31 includes a fixed disk 311, a plurality of connecting plates 312 and a plurality of material dividing pieces 313. The fixed disk 311 is located below the hopper 18. The number of connecting plates 312 and material dividing pieces 313 is equal. The plurality of connecting plates 312 are distributed on the outside of the fixed disk 311 in a circular array with the axis of the fixed disk 311 as the center. The shapes of the connecting plates 312 and the material dividing pieces 313 are both fan-shaped, and the head end of the material dividing piece 313 is installed on the end of the connecting plate 312. A fixing frame 314 is provided between each two adjacent connecting plates 312. The top of the fixing frame 314 has an edge to prevent material from remaining on the fixing frame 314. One end of the fixing frame 314 is installed on the outside of the fixed disk 311.

[0038] Continue to refer Figures 2 to 5 As shown, the squeezing mechanism 32 includes a movable plate 321, which is a ring with a notch, and a fixed frame 314 is installed on the inner top of the movable plate 321. The bottom of the movable plate 321 contacts the top of the filter screen 1 in the upper screening cylinder 15. A fixed cover 322 is installed on the inner bottom of the movable plate 321. The top of the fixed cover 322 is arc-shaped to prevent materials from remaining on the fixed cover 322. A plurality of vibrating balls 323 are arranged inside the fixed cover 322. The plurality of vibrating balls 323 inside the fixed cover 322 can knock the movable plate 321 during the screening process to further improve the effect of the movable plate 321 in squeezing out the agglomerated materials.

[0039] like Figure 3 to Figure 4 As shown, a bracket 36 is installed on the outer side of the baffle 35, and the bracket 36 is installed on the inner side of the upper screening cylinder 15. The baffle 35 is C-shaped and is located on the outer side of the movable plate 321. In the initial position, the notch of the movable plate 321 is in the same direction as the opening of the baffle 35, and the height of the movable plate 321 is greater than the height of the baffle 35. The baffle 35 is arranged concentrically with the upper screening cylinder 15, and the bottom end of the baffle 35 contacts the top end of the filter screen 1 in the upper screening cylinder 15. One end of the baffle 35 has a bevel that extends obliquely to the inner wall of the upper screening cylinder 15, and the bevel on the baffle 35 is arranged close to the upper discharge nozzle 16. The material remaining in the upper screening cylinder 15 can move along the outer side of the baffle 35. At the same time, under the guidance of the bevel of the baffle 35, the material can enter the upper discharge nozzle 16 to discharge the material that cannot pass through the filter screen 1.

[0040] The eccentric rotation of the fixed plate 311 can drive the connecting plate 312, the dividing plate 313 and the movable plate 321 to rotate eccentrically. When the fixed plate 311, the connecting plate 312 and the dividing plate 313 rotate, the materials dropped from the feeding hopper 18 can be dispersed and dropped onto the filter screen 1 in the upper screening cylinder 15, so as to avoid the accumulation of materials in the center of the filter screen 1, so as to speed up the speed of the materials passing through the filter screen 1, thereby improving the screening efficiency of the materials. At the same time, the eccentric rotation of the movable plate 321 can squeeze the materials between the movable plate 321 and the baffle 35 to crush the agglomerated materials, so as to avoid the agglomerated materials occupying the mesh holes on the filter screen 1 for a long time. At the same time, the vibrating ball 323 in the fixed cover 322 can cause a knocking effect on the materials when the movable plate 321 squeezes the materials, so as to further improve the dispersion effect of the agglomerated materials.

[0041] like Figures 3 to 6As shown, the adjustment mechanism 33 includes a mounting seat 331, a mounting frame 332 and a guide rod 333. The mounting seat 331 is mounted on the top of one side of the inner wall of the notch of the movable plate 321 and is located above the baffle 35. In the initial position, the mounting seat 331 is arranged away from the upper discharge nozzle 16, and the mounting frame 332 is slidably connected to the inside of the mounting seat 331. The shape of the mounting frame 332 is U-shaped, and the two ends of the guide rod 333 are respectively mounted on both sides of the inner wall of the mounting frame 332. The scraping mechanism 34 is slidably connected to the guide rod 333, and a spring 334 is installed between the inner wall of the mounting frame 332 and the scraping mechanism 34. The spring 334 is sleeved on the outside of the guide rod 333.

[0042] like Figure 6 As shown, slide bars 335 are installed on both sides of the top of the mounting frame 332, and the top of the slide bars 335 passes through the top of the mounting frame 332 and extends to the outside of the mounting frame 332. Lifting plates 336 are installed on the tops of the two slide bars 335. The lifting plates 336 on the two slide bars 335 are arranged opposite to each other, and the bottoms of the lifting plates 336 are rollingly connected with balls 337.

[0043] like Figure 3 and Figure 6 As shown, the scraper mechanism 34 includes a scraper 341 and a connecting rod 342. The connecting rod 342 is installed on the top side of the scraper 341. The bottom of the scraper 341 contacts the top of the filter screen 1 in the upper screening cylinder 15. A slider 343 is installed on the top of the connecting rod 342. The slider 343 is slidably connected to the outside of the slide bar 335 and is connected to one end of the spring 2 334. A groove for the slide bar 335 to slide is provided at the bottom of the mounting seat 331.

[0044] The movable plate 321 can drive the scraper 341 on the connecting rod 342 to rotate through the mounting seat 331. When the scraper 341 is not in contact with the baffle 35, under the action of the second spring 334, the scraper 341 can be driven to contact the inner wall of the upper screening cylinder 15 to block the material removed from the movable plate 321 from entering the outside of the baffle 35, thereby preventing the uncrushed agglomerated material from being discharged.

[0045] As the movable plate 321 continues to rotate, when the scraper 341 contacts the beveled edge of the baffle 35, the spring 2 334 is compressed, and the scraper 341 moves toward the inside of the movable plate 321 along the guide rod 333. When the scraper 341 passes over the beveled edge of the baffle 35, under the action of the limiting mechanism 50, the lifting plate 336 can be driven to move upward. At the same time, the lifting plate 336 drives the scraper 341 to move upward through the mounting bracket 332 on the slide bar 335, so as to prevent the scraper 341 from pushing the material between the movable plate 321 and the baffle 35 to continue to move, and to prevent the agglomerated material from being directly moved out from between the movable plate 321 and the baffle 35 without being squeezed, so as to better squeeze the agglomerated material.

[0046] like Figure 2 and Figure 4 As shown, the transmission mechanism 40 includes a gear ring 41, a connecting rod 43 and a gear 44. Two fixing plates 42 are installed on the inner side of the gear ring 41. The connecting rod 43 is installed between the two fixing plates 42. The bottom end of the connecting rod 43 is installed at the top edge of the fixing plate 311. The gear 44 is meshed and connected to one side of the gear ring 41. A rotating shaft 45 connected to the output shaft of the motor 19 is installed on the top of the gear 44.

[0047] The motor 19 can drive the gear ring 41 to rotate through the gear 44 on the rotating shaft 45, and the gear ring 41 can drive the fixed plate 311 to rotate eccentrically through the connecting rod 43, and can also drive the movable plate 321 to rotate eccentrically.

[0048] like Figure 2 , Figure 4 and Figure 7 As shown, the limiting mechanism 50 includes a mounting plate 51 and a limiting plate 52. The mounting plate 51 is mounted at the lower part of the mounting cover 17. A hole is provided in the middle of the mounting plate 51 for materials to pass through. The gear ring 41 and the gear 44 are both rotatably connected to the top of the mounting plate 51. The top of the limiting plate 52 is fixed to the bottom of the mounting plate 51 through a plurality of connecting columns. The limiting plate 52 is semicircular in shape. One end of the limiting plate 52 close to the bevel of the baffle 35 has a downwardly inclined surface for the ball 337 to move to the top of the limiting plate 52. The other end of the limiting plate 52 is located above the end of the baffle 35 away from the bevel.

[0049] Working principle: When screening materials, the materials are added to the upper screening cylinder 15 through the feeding hopper 18. At this time, the motor 19 can drive the gear ring 41 to rotate through the gear 44 on the rotating shaft 45, and the gear ring 41 can drive the fixed plate 311 to rotate eccentrically through the connecting rod 43, thereby driving the connecting plate 312, the material dividing sheet 313 and the movable plate 321 to rotate eccentrically. When the fixed plate 311, the connecting plate 312 and the material dividing sheet 313 rotate, the materials falling from the feeding hopper 18 are scattered and fall on the filter screen 1 in the upper screening cylinder 15, and the fallen materials are located on the inner side of the movable plate 321.

[0050] During the rotation of the movable plate 321, the scraper 341 on the connecting rod 342 is driven to rotate through the mounting seat 331. When the scraper 341 is not in contact with the baffle 35, under the action of the spring 2 334, the scraper 341 can be driven to contact the inner wall of the upper screening cylinder 15, thereby preventing the material removed from the movable plate 321 from entering the outside of the baffle 35.

[0051] When the scraper 341 contacts the bevel of the baffle 35, the scraper 341 moves toward the inside of the movable plate 321 along the guide rod 333. When the scraper 341 passes over the bevel of the baffle 35, the material is located between the movable plate 321 and the baffle 35. As the movable plate 321 continues to rotate, the ball 337 moves to the bevel of the limit plate 52 and moves along the track of the limit plate 52. At this time, the lifting plate 336 drives the scraper 341 to move upward through the mounting bracket 332 on the slide bar 335 to prevent the scraper 341 from continuing to push the material between the movable plate 321 and the baffle 35. When the ball 337 is separated from the limit plate 52, the scraper 341 moves downward and contacts the inner wall of the upper screening cylinder 15 again.

[0052] When the movable plate 321 rotates, it can squeeze the material between the movable plate 321 and the baffle 35 to crush the agglomerated material. At this time, the material that meets the standards passes through the filter screen of the upper screening cylinder 15 and enters the lower screening cylinder 13, and the material that does not meet the standards moves to the outside of the baffle 35 and is discharged from the upper discharge nozzle 16.

[0053] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A powder vibrating screening machine, comprising a lower screening cylinder (13) and an upper screening cylinder (15), wherein a filter screen is provided inside the upper screening cylinder (15), characterized in that: A material distribution mechanism (30) is provided inside the upper screening cylinder (15), and a transmission mechanism (40) is installed on the material distribution mechanism (30); The material distribution mechanism (30) comprises a material spreading mechanism (31) located in the upper screening cylinder (15), a squeezing mechanism (32) installed outside the material spreading mechanism (31), and a baffle (35) installed on the inner wall of the upper screening cylinder (15), wherein the baffle (35) is located outside the squeezing mechanism (32), and the baffle (35) has a beveled edge extending obliquely to the inner wall of the upper screening cylinder (15) to guide the material to be discharged from the upper screening cylinder (15); The material spreading mechanism (31) comprises a fixed disk (311), a plurality of connecting plates (312) mounted on the outside of the fixed disk (311), and a material spreading sheet (313) mounted at the end of the connecting plate (312); the transmission mechanism (40) is connected to the fixed disk (311) to drive the fixed disk (311) to rotate eccentrically; The extrusion mechanism (32) comprises a movable plate (321) mounted on the outside of the fixed plate (311). The movable plate (321) is annular with a notch and is located on the inside of the baffle (35). The movable plate (321) contacts the filter screen in the upper screening cylinder (15). The fixed plate (311) drives the connecting plate (312) and the material dividing sheet (313) to rotate eccentrically to prevent the materials from being concentrated and piled up. At the same time, the movable plate (321) squeezes the agglomerated materials between the movable plate (321) and the baffle (35) to disperse the agglomerated materials.

2. The powder vibrating screening machine according to claim 1, characterized in that: A fixed cover (322) is installed on the inner bottom of the movable plate (321), and a plurality of vibrating balls (323) are arranged inside the fixed cover (322).

3. The powder vibrating screening machine according to claim 1, characterized in that: An adjusting mechanism (33) is installed on the extrusion mechanism (32), a scraping mechanism (34) is installed on the adjusting mechanism (33), and a limiting mechanism (50) for adjusting the height of the scraping mechanism (34) is installed between the transmission mechanism (40) and the spreading mechanism (31).

4. The powder vibrating screening machine according to claim 3, characterized in that: The scraping mechanism (34) comprises a scraper (341) and a connecting rod (342); the bottom end of the connecting rod (342) is mounted on the scraper (341), and the top end of the connecting rod (342) is arranged on the adjusting mechanism (33).

5. The powder vibrating screening machine according to claim 4, characterized in that: The adjustment mechanism (33) comprises a mounting seat (331) mounted on the movable plate (321), a mounting frame (332) sliding inside the mounting seat (331), and a guide rod (333) mounted in the mounting frame (332); the mounting seat (331) is located above the baffle (35); and the connecting rod (342) is elastically slidably arranged on the guide rod (333) in a lateral direction.

6. The powder vibrating screening machine according to claim 5, characterized in that: Two slide bars (335) are installed on the top of the mounting frame (332); a lifting plate (336) is installed on one end of the slide bar (335) that passes through the top of the mounting frame (332); and a ball (337) that can roll on the limiting mechanism (50) is provided on the lifting plate (336).

7. The powder vibrating screening machine according to any one of claims 3 to 6, characterized in that: The limiting mechanism (50) comprises a mounting plate (51) and a limiting plate (52) mounted on the bottom end of the mounting plate (51); the limiting plate (52) is semicircular in shape; one end of the limiting plate (52) close to the bevel of the baffle (35) has a downwardly inclined surface.

8. The powder vibrating screening machine according to claim 7, characterized in that: The transmission mechanism (40) comprises a gear ring (41), a connecting rod (43) and a gear (44); the gear ring (41) is rotatably connected to a mounting plate (51); the connecting rod (43) is mounted on the inner side of the gear ring (41); the connecting rod (43) is mounted at the top edge of a fixed plate (311); and the gear (44) is meshingly connected to one side of the gear ring (41).

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