Powder metallurgy raw material sieving device

Abstract

The utility model relates to the technical field of powder metallurgy, in particular to a powder metallurgy raw material screening device which comprises an upper disc device, a material screening device, a material guiding device and an annular frame, under the action of rotation of a screen and downward dissipation of the powder metallurgy raw material, large-particle impurities are discharged along the screen, a guiding ring and handle rods arranged at intervals, and therefore the powder metallurgy raw material is screened out. Wherein a negative pressure port of the negative pressure fan is fixedly communicated with the bottom of the cavity box through a pipeline, clearance type negative pressure suction force is generated at the inclined plane above the fiber permeable plate, when negative pressure is generated, powder metallurgy raw materials penetrating through the screen cloth can be rapidly adsorbed to the inclined plane above the fiber permeable plate, and when the negative pressure stops, the powder metallurgy raw materials can be rapidly adsorbed. The powder metallurgy raw materials on the inclined face above the fiber permeable plate slide downwards and are discharged through a discharging hole formed in the bottom end of the annular frame, through the arrangement, large-particle impurities of the powder metallurgy raw materials can be conveniently screened out, and the powder metallurgy raw materials with the impurities screened out can be conveniently guided and discharged.

Description

TECHNICAL FIELD

[0001] The utility model relates to powder metallurgy technical field, concretely is a kind of powder metallurgy raw material screening device. BACKGROUND

[0002] Powder metallurgy is with metal powder as raw material, after pressing forming and sintering to manufacture metal material, composite material and various types of products, powder metallurgy raw material needs to be screened before use, to ensure the quality of product.

[0003] With the screening device of powder metallurgy raw material as example, part of the screening device of powder metallurgy raw material, while screening large-particle impurities of powder metallurgy raw material, it is inconvenient to guide and discharge powder metallurgy raw material screened impurities, therefore, aiming at the above-mentioned problem, a kind of powder metallurgy raw material screening device is provided. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of powder metallurgy raw material screening device, to solve the problem that part of the screening device of powder metallurgy raw material, while screening large-particle impurities of powder metallurgy raw material, it is inconvenient to guide and discharge powder metallurgy raw material screened impurities.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] The utility model provides a kind of powder metallurgy raw material sieving device, including upper disc device, screening device, guide device and ring frame, the screening device is provided with guide device in the bottom end inside of upper disc device, the screening device bottom and guide device bottom are provided with ring frame, the upper disc device includes base disc, chuck, insert ring, ring pipe, outer ring plate, inner ring plate, ring and silica gel ring, chuck is fixedly provided with insert ring in the inside, the bottom of insert ring is fixedly connected with ring pipe, the top of insert ring is fixedly connected with outer ring plate, inner ring plate, chuck is fixedly provided with ring in the outside, the inside of ring is fixedly provided with silica gel ring, the screening device includes step motor, shaft block, handle, guide ring, screen, insert and first lower ring piece, the main shaft of step motor bottom end is fixedly provided with shaft block, shaft block is fixedly provided with handle outside symmetrically, the end of handle away from shaft block is fixedly provided with guide ring, the top of guide ring is fixedly provided with screen, the top of screen is fixedly provided with insert, the bottom of guide ring is fixedly provided with first lower ring piece, the guide device includes sleeve ring, ring shell, compression ring, second lower ring piece, negative pressure fan, cavity box and fibre air-permeable plate, the inside wall of sleeve ring below is fixedly provided with ring shell, the outside of ring shell is fixedly provided with compression ring, the bottom end of ring shell is fixedly provided with second lower ring piece, the top of compression ring left end is fixedly provided with negative pressure fan, the top pipe of negative pressure fan and the inside of ring shell are fixedly provided with cavity box, the inside wall of ring shell is fixedly provided with fibre air-permeable plate.

[0007] Preferably, the bottom end of the second lower ring piece is fixedly provided with a ring frame inside, which is in contact with the bottom end of the first lower ring piece, and a discharge hole is formed in the bottom end of the ring frame.

[0008] Preferably, the inside of the silica gel ring is in contact with the insert, and the top of the screen is in contact with the bottom of the silica gel ring.

[0009] Preferably, the inside wall of the sleeve ring is fixedly provided with the outer wall of the ring, and the inclination angle of the ring shell with the horizontal plane and the inclination angle of the screen with the horizontal plane are both set to 30 degrees.

[0010] Preferably, the cavity box is hollow, and the bottom of the fibre air-permeable plate is in communication with the inclined groove of the cavity box.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] In this invention, a stepper motor starts and drives the shaft block, handle, guide ring, screen, insert, and first lower ring to rotate. Under the rotation of the screen and its own downward dispersion, large particles of the powder metallurgy raw material are discharged along the screen, guide ring, and spaced-apart handle. The negative pressure fan starts intermittently with pulses. The negative pressure port of the negative pressure fan is fixedly connected to the bottom of the chamber through a pipe. The bottom of the fiber breathable plate is connected to the inclined groove of the chamber. Intermittent negative pressure suction is generated at the inclined surface above the fiber breathable plate. When negative pressure is generated, the powder metallurgy raw material passing through the screen can be quickly adsorbed to the inclined surface above the fiber breathable plate. When the negative pressure stops, the powder metallurgy raw material on the inclined surface above the fiber breathable plate slides down and is discharged through the discharge hole opened inside the bottom of the ring frame. Through the above configuration, the powder metallurgy raw material screening device of this device facilitates the screening of large particles of the powder metallurgy raw material and facilitates the guiding and discharge of the screened powder metallurgy raw material. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic cross-sectional view of the present invention.

[0015] Figure 3 This utility model Figure 2 A schematic diagram of the structure at point A;

[0016] Figure 4 This utility model Figure 2 A schematic diagram of the upper left part of the structure;

[0017] Figure 5 This utility model Figure 2 A schematic diagram of the lower right part of the structure;

[0018] Figure 6 This is a top view of the handle structure of this utility model.

[0019] In the diagram: 1. Upper plate device; 11. Base plate; 12. Chuck; 13. Insert ring; 14. Ring tube; 15. Outer ring plate; 16. Inner ring plate; 17. Ring; 18. Silicone ring; 2. Screening device; 21. Stepper motor; 22. Shaft block; 23. Handle; 24. Guide ring; 25. Screen; 26. Insert; 27. First lower ring component; 3. Material guiding device; 31. Collar ring; 32. Ring shell; 33. Pressure ring; 34. Second lower ring component; 35. Negative pressure fan; 36. Chamber; 37. Fiber breathable board; 4. Ring frame. Detailed Implementation

[0020] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, apparently, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0021] In the embodiments of the utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance, and similarly, "one", "an" or "the" and the like do not mean quantity limitation, but mean that there is at least one. The terms "include" or "contain" and the like mean that the elements or objects before the word are encompassed by the elements or objects listed after the word and their equivalents, and do not exclude other elements or objects.

[0022] In addition, in the embodiments of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be broadly understood, for example, it can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be direct connection, can also be indirectly connected through intermediate medium, can be the communication inside two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0023] Please refer to Figures 1-6 The utility model provides a technical scheme:

[0024] The application discloses a powder metallurgy raw material screening device, which comprises an upper disc device 1, a screening device 2, a material guiding device 3 and a ring frame 4, the bottom end of the upper disc device 1 is internally provided with the screening device 2, the outer side of the screening device 2 is provided with the material guiding device 3, and the bottom of the screening device 2 and the bottom of the material guiding device 3 are provided with the ring frame 4, the upper disc device 1 comprises a base disc 11, a chuck 12, an insert ring 13, a ring pipe 14, an outer ring plate 15, an inner ring plate 16, a ring 17 and a silica gel ring 18, the outer side of the base disc 11 is fixedly provided with the chuck 12, the inside of the chuck 12 is fixedly provided with the insert ring 13, the bottom of the insert ring 13 is fixedly communicated with the ring pipe 14, the top of the insert ring 13 is fixedly communicated with the outer ring plate 15 and the inner ring plate 16, the outer side of the chuck 12 is fixedly provided with the ring 17, and the inside of the ring 17 is fixedly provided with the silica gel ring 18, the screening device 2 comprises a stepping motor 21, a shaft block 22, a handle rod 23, a guide ring 24, a screen 25, an insert 26 and a first lower ring piece 27, the bottom end of the stepping motor 21 is fixedly provided with the shaft block 22, the outer side of the shaft block 22 is symmetrically and fixedly provided with the handle rod 23, one end, away from the shaft block 22, of the handle rod 23 is fixedly provided with the guide ring 24, the top of the guide ring 24 is fixedly provided with the screen 25, the top of the screen 25 is fixedly provided with the insert 26, and the bottom of the guide ring 24 is fixedly provided with the first lower ring piece 27, the material guiding device 3 comprises a sleeve ring 31, a ring shell 32, a pressing ring 33, a second lower ring piece 34, a negative pressure fan 35, a cavity box 36 and a fiber air permeable plate 37, the inner wall below the sleeve ring 31 is fixedly provided with the ring shell 32, the outer side of the ring shell 32 is fixedly provided with the pressing ring 33, the bottom end of the ring shell 32 is fixedly provided with the second lower ring piece 34, the top of the left end of the pressing ring 33 is fixedly provided with the negative pressure fan 35, the top pipeline of the negative pressure fan 35 and the inside of the ring shell 32 are fixedly provided with the cavity box 36, and the inner wall of the ring shell 32 is fixedly provided with the fiber air permeable plate 37.

[0025] The bottom end of the second lower ring piece 34 is fixedly provided with the ring frame 4, the ring frame 4 is in contact with the bottom end of the first lower ring piece 27, and a discharging hole is formed in the bottom end of the ring frame 4, so that the powder metallurgy raw material can be conveniently discharged.

[0026] The inside of the silica gel ring 18 is in contact with the insert 26, and the top of the screen 25 is in contact with the bottom end of the silica gel ring 18, so that the rotation of the screening device 2 is limited.

[0027] The inner wall of the sleeve ring 31 is fixedly provided with the outer wall of the ring 17, the inclination angle between the ring shell 32 and the horizontal plane and the inclination angle between the screen 25 and the horizontal plane are both 30 degrees, so that the powder metallurgy raw material can slide along the inner wall of the ring shell 32.

[0028] The cavity box 36 is hollow, the bottom of the fiber air permeable plate 37 is communicated with the inclined groove of the cavity box 36, and the cavity box 36 is communicated with the negative pressure pipeline at the top of the negative pressure fan 35.

[0029] Workflow: The utility model provides a kind of screening device of powder metallurgy raw material, it is convenient to screen out large particle impurities to powder metallurgy raw material, and it is convenient to guide and discharge the powder metallurgy raw material of screening impurities.

[0030] The stepping motor 21 and the negative pressure fan 35 are controlled by the external PLC controller, and the stepping motor 21 and the negative pressure fan 35 are in electrical communication with the external power supply.

[0031] The powder metallurgy raw material to be screened is placed between the outer ring plate 15 and the inner ring plate 16, and the powder metallurgy raw material enters the ring pipe 14 along the inside of the insert ring 13, and the powder metallurgy raw material is discharged from the bottom of the ring pipe 14. The stepping motor 21 drives the shaft block 22, the handle 23, the guide ring 24, the screen 25, the insert 26 and the first lower ring 27 to rotate. The inside of the silica gel ring 18 is in contact with the insert 26, the top end of the screen 25 is in contact with the bottom end of the silica gel ring 18, and the ring frame 4 is in contact with the inside of the bottom end of the first lower ring 27. The above-mentioned parts form a rotating limiting action for the screening device 2. The powder metallurgy raw material is separated and screened from the large particle impurities under the action of the rotation of the screen 25 and the downward dispersion of the powder metallurgy raw material itself. The large particle impurities are discharged along the screen 25, the guide ring 24 and the handle 23 arranged at intervals.

[0032] The negative pressure fan 35 is intermittently started in pulse mode. The negative pressure port of the negative pressure fan 35 is in fixed communication with the bottom of the cavity box 36 through a pipeline, and the bottom of the fiber air permeable plate 37 is in communication with the inclined slot of the cavity box 36. The gap type negative pressure suction force is generated at the inclined surface above the fiber air permeable plate 37. When negative pressure is generated, the powder metallurgy raw material that passes through the screen 25 can be quickly adsorbed to the inclined surface above the fiber air permeable plate 37. When the negative pressure stops, the powder metallurgy raw material on the inclined surface above the fiber air permeable plate 37 slides downward and is discharged through the discharge hole in the bottom end of the ring frame 4.

[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A powder metallurgy raw material sieving device, comprising an upper disc device (1), a sieving device (2), a material guiding device (3) and a ring frame (4), characterized in that: The upper disc device (1) is internally provided with a screening device (2) at the bottom end, the screening device (2) is externally provided with a material guiding device (3), the bottom of the screening device (2) and the bottom of the material guiding device (3) are provided with a ring frame (4), the upper disc device (1) comprises a base disc (11), a chuck (12), an insert ring (13), a ring pipe (14), an outer ring plate (15), an inner ring plate (16), a ring (17) and a silica gel ring (18), the chuck (12) is fixedly arranged outside the base disc (11), the insert ring (13) is fixedly arranged inside the chuck (12), the ring pipe (14) is fixedly communicated with the bottom of the insert ring (13), the outer ring plate (15) and the inner ring plate (16) are fixedly communicated with the top of the insert ring (13), the chuck (12) is fixedly provided with the ring (17) outside, the ring (17) is fixedly provided with the silica gel ring (18) inside, the screening device (2) comprises a stepping motor (21), a shaft block (22), a handle rod (23), a guide ring (24), a screen (25), an insert (26) and a first lower ring piece (27), the shaft block (22) is fixedly arranged at the bottom end of the stepping motor (21), the handle rod (23) is fixedly arranged outside the shaft block (22) in a symmetrical distribution, the guide ring (24) is fixedly arranged at the end of the handle rod (23) away from the shaft block (22), the screen (25) is fixedly arranged at the top of the guide ring (24), the insert (26) is fixedly arranged at the top of the screen (25), the first lower ring piece (27) is fixedly arranged at the bottom of the guide ring (24), the material guiding device (3) comprises a sleeve ring (31), a ring shell (32), a pressing ring (33), a second lower ring piece (34), a negative pressure fan (35), a cavity box (36) and a fiber air permeable plate (37), the ring shell (32) is fixedly arranged on the inner wall below the sleeve ring (31), the pressing ring (33) is fixedly arranged outside the ring shell (32), the second lower ring piece (34) is fixedly arranged at the bottom end of the ring shell (32), the negative pressure fan (35) is fixedly arranged at the top of the left end of the pressing ring (33), the cavity box (36) is fixedly arranged in the pipeline at the top end of the negative pressure fan (35) and the ring shell (32), and the fiber air permeable plate (37) is fixedly arranged on the inner wall of the ring shell (32).

2. The powder metallurgy feedstock screening device of claim 1, wherein: The second lower ring piece (34) is fixedly arranged with the ring frame (4) inside the bottom end, the ring frame (4) is in close contact with the bottom end inside of the first lower ring piece (27), and the ring frame (4) is provided with a discharging hole inside the bottom end.

3. The powder metallurgy feedstock screening device of claim 1, wherein: The silica gel ring (18) is in close contact with the insert (26) inside, and the screen (25) is in close contact with the bottom end of the silica gel ring (18) at the top.

4. The powder metallurgy feedstock screening device of claim 1, wherein: The inner wall of the sleeve ring (31) and the outer wall of the ring (17) are fixedly arranged, and the inclination angle of the ring shell (32) and the screen (25) with the horizontal plane is 30 degrees.

5. The powder metallurgy feedstock screening device of claim 1, wherein: The cavity box (36) is hollow, and the fiber air permeable plate (37) is communicated with the inclined groove of the cavity box (36) at the bottom.

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