Multi-screening device for powder

Abstract

The utility model relates to the technical field of powder screening, in particular to a multiple powder screening device which comprises a box body and a collecting device. A feeding pipe and a discharging pipe are arranged on the box body; the collecting device comprises a water tank arranged on the box body, a fan arranged on the water tank, an air inlet pipe and a communicating pipe which are respectively connected with the input end and the output end of the fan, an air suction cover arranged at the inlet of the air inlet pipe, a rotating rod rotationally connected inside the water tank, a plurality of stirring blades arranged on the rotating rod, and a driving assembly arranged on the water tank; the communicating pipe outlet is located at the bottom of the water tank. According to the powder feeding device, the situation that powder overflows from the feeding pipe along with air, and then the working environment and the body health of workers are affected is avoided, and the powder feeding device has good practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of powder screening, in particular to a powder multiple screening device. Background Art

[0002] Multiple powder screening is a material handling process used to classify, screen, and purify powdered materials. This process improves the purity of the powder, ensuring that the particle size distribution meets specific production requirements while removing impurities and unwanted particles.

[0003] Chinese patent announcement number CN215542762U discloses a multi-stage screening device for alumina powder, comprising a screening body, a plurality of screening units arranged inside the screening body, and the screening units are detachably arranged between the screening body and the screening body through a connecting mechanism, a screening mesh is installed on the screening unit through a disassembly mechanism, a plurality of No. 1 outlets corresponding to the screening units are provided on one side of the screening body, a No. 2 outlet is provided at the bottom of the screening body, a feed port is provided in the middle of the top of the screening body, and a support frame is fixedly installed at the bottom of the screening body. This device realizes multi-stage screening by being provided with a series of structures, and the multi-stage screening is highly efficient, time-saving and labor-saving. The screening units are detachably designed, and the number of screening units is determined according to the number of grading requirements. It is flexible to use, more applicable, easy to disassemble and assemble, and convenient for repairing and replacing the screening unit modules. The movably arranged screen on the screening unit can vibrate, and the vibration improves the screening efficiency.

[0004] However, the above technical solution has the following shortcomings: although the device is convenient for maintenance and replacement of the screening unit module, after the powder is poured into the machine body, once it is vibrated and screened, fine powder will be lifted up and overflow from the feed port, which not only destroys the working environment but also affects the health of the staff. Utility Model Content

[0005] The purpose of the utility model is to address the problems existing in the background technology and propose a powder multiple screening device to prevent powder from overflowing from the feed pipe with air, thereby affecting the working environment and the health of workers, and has good practicality.

[0006] The technical solution of the utility model is a powder multiple screening device, comprising a box body and a collecting device; a feed pipe and a discharge pipe are provided on the box body; the collecting device comprises a water tank arranged on the box body, a fan arranged on the water tank, an air intake pipe and a connecting pipe connected to the input end and output end of the fan respectively, an air suction hood arranged at the inlet of the air intake pipe, a rotating rod rotatably connected to the inside of the water tank, a plurality of stirring blades arranged on the rotating rod, and a driving assembly arranged on the water tank, and the outlet of the connecting pipe is located at the bottom of the water tank.

[0007] Preferably, the driving assembly includes a first motor arranged on the water tank, a second gear drivingly connected to the first motor, and a first gear coaxially arranged on the rotating rod, and the first gear is meshed with the second gear.

[0008] Preferably, the water tank is provided with a water inlet pipe, a drain pipe and an exhaust pipe.

[0009] Preferably, a baffle is provided on the feed pipe, and the suction hood is located below the baffle.

[0010] Preferably, the interior of the box is provided with three first screening bins, a second screening bin and a third screening bin distributed from top to bottom, and three box doors are provided on the box. The first screening bin, the second screening bin and the third screening bin are all provided with screening mechanisms. The screening mechanism includes a screen frame with a screen at the bottom, four supporting components distributed in a rectangular array inside the box, and two vibration components symmetrically distributed on the box.

[0011] Preferably, the vibration assembly includes a second motor arranged on the box body, a rotating shaft rotatably connected to the box body, a cam arranged on the rotating shaft, and an extrusion block arranged on the screen frame, the extrusion block is located above the cam, and the second motor is driven and connected to the rotating shaft.

[0012] Preferably, a snap ring is coaxially arranged on the rotating shaft, and the snap ring is rotatably connected to the inside of the box.

[0013] Preferably, the support assembly includes a placement block arranged on the screen frame, a fixed block arranged on the box body, a fixed cylinder arranged on the fixed block, a spring arranged inside the fixed cylinder, and a support column arranged on the spring, and the placement block abuts against the support column.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects:

[0015] 1. The utility model can absorb the powder raised after the powder is poured into the body through the collection mechanism, and collect the powder in conjunction with the stirring blades and drive components, thereby avoiding the situation where the powder overflows from the feed pipe with the air, thereby affecting the working environment and the health of the staff, and has good practicality.

[0016] 2. The support assembly provided in the utility model can buffer the screen frame during vibration screening, thereby preventing the screen frame from being damaged by direct collision with the fixed block, thereby increasing the service life of the equipment and reducing the noise during screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0018] Figure 2Schematic diagram of the cross-sectional structure of the box;

[0019] Figure 3 It is a structural diagram of the collection mechanism;

[0020] Figure 4 Schematic diagram of the cross-sectional structure of the support component.

[0021] Figure numerals: 1. Box body; 2. Feed pipe; 3. Water tank; 4. Fan; 5. Air inlet pipe; 6. Suction hood; 7. Connecting pipe; 8. Rotating rod; 9. Stirring blade; 10. First gear; 11. First motor; 12. Second gear; 13. Water inlet pipe; 14. Drain pipe; 15. Exhaust pipe; 16. Baffle; 17. Screen frame; 18. Extrusion block; 19. Second motor; 20. Rotating shaft; 21. Cam; 22. Snap ring; 23. Placement block; 24. Fixed block; 25. Fixed cylinder; 26. Spring; 27. Support column; 28. Box door; 29. ​​Discharge pipe. DETAILED DESCRIPTION

[0022] Example 1

[0023] like Figure 1-Figure 3 As shown, a powder multiple screening device proposed in this embodiment includes a box body 1 and a collecting device; a feed pipe 2 and a discharge pipe 29 are provided on the box body 1.

[0024] The collecting device includes a water tank 3 arranged on the box body 1, a fan 4 arranged on the water tank 3, an air inlet pipe 5 and a connecting pipe 7 connected to the input end and the output end of the fan 4 respectively, an air suction hood 6 arranged at the inlet of the air inlet pipe 5, a rotating rod 8 rotatably connected to the inside of the water tank 3, a plurality of stirring blades 9 arranged on the rotating rod 8, and a driving assembly arranged on the water tank 3. The water tank 3 is provided with an inlet pipe 13, a drain pipe 14 and an exhaust pipe 15. The outlet of the connecting pipe 7 is located at the bottom of the water tank 3. A baffle 16 is provided on the feed pipe 2. The air suction hood 6 is located below the baffle 16. The baffle 16 is used to prevent part of the powder from being directly sucked into the air suction hood 6 when the powder enters the box body 1.

[0025] The driving assembly includes a first motor 11 arranged on the water tank 3, a second gear 12 drivingly connected to the first motor 11, and a first gear 10 coaxially arranged on the rotating rod 8, and the first gear 10 is meshed with the second gear 12.

[0026] In this embodiment, when the powder is poured into the interior of the box body 1 from the feed pipe 2, the fan 4 is started to absorb the raised powder from the suction hood 6 and transport it into the water tank 3 through the air intake pipe 5 and the connecting pipe 7, thereby avoiding the powder from overflowing from the feed pipe 2 with the air when the powder is screened, thereby affecting the working environment and the health of the staff; at the same time, the first motor 11 is started to drive the first gear 10 and the second gear 12 to engage and transmit, and the second gear 12 drives the rotating rod 8 and the stirring blade 9 to rotate, so that the powder entering the water is stirred to achieve the purpose of evenly distributing the powder in the water tank 3, and the meshing transmission speed is controlled to be slow to avoid affecting the normal circulation of gas.

[0027] Example 2

[0028] like Figure 1 、 Figure 2 and Figure 4 As shown, a powder multiple screening device proposed in this embodiment, compared with Example 1, in this embodiment, the interior of the box body 1 is provided with three first screening bins, second screening bins and third screening bins distributed from top to bottom, and three box doors 28 are provided on the box body 1. The interiors of the first screening bin, the second screening bin and the third screening bin are all provided with screening mechanisms, and the screening mechanisms include a screen frame 17 with a screen at the bottom, four supporting components distributed in a rectangular array inside the box body 1, and two vibration components symmetrically distributed on the box body 1, and the box door 28 is used to open the three screening bins and take and place the screen frame 17, so as to collect and process the powders of different particle sizes collected on each screen frame 17 separately.

[0029] like Figure 2 As shown, the vibration assembly includes a second motor 19 arranged on the box body 1, a rotating shaft 20 rotatably connected to the box body 1, a cam 21 arranged on the rotating shaft 20, and an extrusion block 18 arranged on the screen frame 17. The extrusion block 18 is located above the cam 21. The second motor 19 is driven and connected to the rotating shaft 20. A retaining ring 22 is coaxially arranged on the rotating shaft 20. The retaining ring 22 is rotatably connected to the inside of the box body 1. The retaining ring 22 is used to improve the stability of the rotating shaft 20 during rotation.

[0030] like Figure 2 and Figure 4 As shown, the support assembly includes a placement block 23 provided on the screen frame 17, a fixing block 24 provided on the box body 1, a fixing cylinder 25 provided on the fixing block 24, a spring 26 provided inside the fixing cylinder 25, and a support column 27 provided on the spring 26. The placement block 23 abuts against the support column 27.

[0031] In this embodiment, when screening powder, the second motor 19 is started to drive the rotating shaft 20 and the cam 21 to rotate, and the cam 21 and the extrusion block 18 are continuously squeezed and separated, and then the extrusion block 18 drives the screen frame 17 to vibrate up and down continuously, so that the screen at the bottom of the screen frame 17 (not shown) vibrates and screens the powder falling on the screen, and the powder smaller than the screen aperture enters the next screening bin until part of the powder is discharged and collected from the discharge pipe 29.

[0032] When the screen frame 17 vibrates, the placing block 23 vibrates up and down along with the screen frame 17, and then the placing block 23 continuously squeezes the support column 27, and the support column 27 squeezes the spring 26, thereby playing a buffering role, avoiding the disadvantage of the screen frame 17 being directly hit by the fixed block 24 during vibration, causing damage to the screen frame 17, and at the same time reducing the noise during screening.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. A powder multiple screening device, characterized in that: include: A box body (1) is provided with a feed pipe (2) and a discharge pipe (29); A collecting device comprises a water tank (3) arranged on a box body (1), a fan (4) arranged on the water tank (3), an air intake pipe (5) and a connecting pipe (7) respectively connected to the input end and the output end of the fan (4), an air suction cover (6) arranged at the inlet of the air intake pipe (5), a rotating rod (8) rotatably connected to the inside of the water tank (3), a plurality of stirring blades (9) arranged on the rotating rod (8), and a driving assembly arranged on the water tank (3); the outlet of the connecting pipe (7) is located at the bottom of the water tank (3).

2. A powder multiple screening device according to claim 1, characterized in that: The driving assembly comprises a first motor (11) arranged on the water tank (3), a second gear (12) drivingly connected to the first motor (11), and a first gear (10) coaxially arranged on the rotating rod (8), wherein the first gear (10) is meshedly connected to the second gear (12).

3. A powder multiple screening device according to claim 1, characterized in that: The water tank (3) is provided with a water inlet pipe (13), a drain pipe (14) and an exhaust pipe (15).

4. A powder multiple screening device according to claim 1, characterized in that: A baffle (16) is provided on the feed pipe (2), and the air suction hood (6) is located below the baffle (16).

5. The powder multiple screening device according to claim 1, characterized in that: The box (1) is provided with three first screening bins, a second screening bin and a third screening bin distributed from top to bottom. The box (1) is provided with three box doors (28). The first screening bin, the second screening bin and the third screening bin are all provided with screening mechanisms. The screening mechanisms include a screen frame (17) with a screen mesh at the bottom, four supporting components distributed in a rectangular array inside the box (1), and two vibration components symmetrically distributed on the box (1).

6. A powder multiple screening device according to claim 5, characterized in that: The vibration assembly comprises a second motor (19) arranged on the box body (1), a rotating shaft (20) rotatably connected to the box body (1), a cam (21) arranged on the rotating shaft (20), and an extrusion block (18) arranged on the screen frame (17), wherein the extrusion block (18) is located above the cam (21), and the second motor (19) is drivingly connected to the rotating shaft (20).

7. A powder multiple screening device according to claim 6, characterized in that: A snap ring (22) is coaxially arranged on the rotating shaft (20), and the snap ring (22) is rotatably connected to the interior of the box body (1).

8. The powder multiple screening device according to claim 5, characterized in that: The support assembly comprises a placement block (23) arranged on the screen frame (17), a fixing block (24) arranged on the box body (1), a fixing cylinder (25) arranged on the fixing block (24), a spring (26) arranged inside the fixing cylinder (25), and a support column (27) arranged on the spring (26), wherein the placement block (23) abuts against the support column (27).

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