Titanium alloy fine powder screening device

Abstract

The utility model discloses a titanium alloy fine powder screening device relates to fine powder screening technical field, the utility model discloses a raw material box, fine division box, screening cylinder, multistage screening structure and inert gas device are inserted with a plurality of spliced fine division board in fine division box, and the raw material box bottom is spliced with fine division box top, and the top of screening cylinder is equipped with the bucket, and the bottom is equipped with the first inclined exhaust pipe of material powder, and multistage screening structure includes first screening hopper subassembly, second screening hopper subassembly, first shunt cone block and second shunt cone block, and the low end of first exhaust pipe and second exhaust pipe respectively has the second inclined exhaust pipe and third inclined exhaust pipe, and first inclined exhaust pipe, second inclined exhaust pipe and third inclined exhaust pipe all insert into the sealed material receiving box. The utility model discloses a titanium alloy fine powder is protected through the inert gas, and the caked fine powder is cut, and the abrasion is reduced, and the fine powder purity and screening effect are improved, and the existing screening inert gas is not mixed evenly, and when the caking is smashed, the problem such as easy pollution is solved.

Description

Technical Field

[0001] This utility model belongs to the field of fine powder screening technology, and in particular relates to a titanium alloy fine powder screening device. Background Technology

[0002] Titanium is a reactive metal with physical and chemical properties significantly different from conventional metals. Titanium powder is widely used due to its lightweight and excellent wear resistance. However, because titanium alloy powder easily generates static electricity when rubbed, inert gas needs to be introduced during sieving. Existing sieving devices, however, cannot adequately mix the inert gas with the titanium alloy powder, resulting in a low safety factor and requiring improvement. Furthermore, the sieving process cannot effectively crush or agitate agglomerated particles, making it highly susceptible to wear and tear, similar to ordinary metals during stirring or pressing. The resulting metal debris contaminates the titanium alloy powder, affecting product purity. Utility Model Content

[0003] The purpose of this invention is to provide a titanium alloy fine powder screening device, which protects the titanium alloy fine powder by introducing inert gas, crushes agglomerated fine powder, reduces wear, improves the purity of fine powder and screening effect, and solves the problems of uneven mixing of inert gas in existing screening devices and easy contamination when crushing agglomerated powder.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a titanium alloy fine powder screening device, comprising a raw material box, a fine separation box, a screening cylinder, a multi-stage screening structure, and an inert gas device. The raw material box contains a feeding structure. The fine separation box has openings at the top and bottom, and is filled with multiple spliced ​​fine separation plates. The bottom of the raw material box is spliced ​​to the top of the fine separation box. The screening cylinder has a lid at the top and a first inclined discharge pipe for the powder at the bottom. The fine separation box penetrates the center of the lid. The multi-stage screening structure includes a first screening hopper assembly, a second screening hopper assembly, a first diversion cone, and a second diversion cone. The first screening hopper assembly is installed above the second screening hopper assembly. The first discharge pipe of the first screening hopper assembly passes through the second discharge pipe of the second screening hopper assembly. The first diversion cone and the second diversion cone are respectively set in the first screening hopper assembly and the second screening hopper assembly. The second discharge pipe passes through the bottom of the first inclined discharge pipe. The lower ends of the first discharge pipe and the second discharge pipe are respectively fitted with the second inclined discharge pipe and the third inclined discharge pipe. The first inclined discharge pipe, the second inclined discharge pipe and the third inclined discharge pipe are all inserted into the sealed receiving box. The inert gas device draws the gas in the receiving box outward and recovers it. The inert gas device discharges inert gas into the interior of the top position of the fine separation box.

[0006] The present invention is further configured such that a first blocking plate is provided on the side wall at the top opening of the raw material box, a conical feeding hopper is provided inside the raw material box, a second blocking plate is provided on the raw material box extending to the bottom of the conical feeding hopper, and a sealing ring is provided at the bottom of the raw material box.

[0007] The present invention is further configured such that the subdivision box is provided with an air inlet pipe on each of the four side walls near the top, the inert gas device discharges inert gas into the subdivision box from the four air inlet pipes, the sealing ring at the bottom of the raw material box is attached to the top of the subdivision box, the subdivision box is provided with a limiting block on each of the four side walls below the air inlet pipe, the upper surface of the barrel lid is provided with a square sealing frame, the subdivision box is inserted into the square sealing frame and the limiting block rests on the top of the square sealing frame.

[0008] The present invention is further configured such that the subdivision plate includes a U-shaped enclosure and an array of cutting blades. The cutting blades are arrayed on the inner bottom wall of the U-shaped enclosure. The cutting blades in adjacent rows on the U-shaped enclosure are staggered. The U-shaped enclosure is vertically placed inside the subdivision box, and the blades of the cutting blades face upward.

[0009] The present invention is further configured such that the first screening hopper assembly includes a first conical hopper box and a first conical sieve plate, the conical bottom of the first conical hopper box is a first sieve conical bottom, the bottom of the first sieve conical bottom is connected to a first discharge pipe, the first conical sieve plate is inserted into the first conical hopper box and fits against the upper surface of the first sieve conical bottom, and four support plates are provided around the bottom of the first diversion cone block, the four support plates of the first diversion cone block rest on the top of the first conical sieve plate.

[0010] The present invention is further configured such that the second screening hopper assembly includes a second conical hopper box and a second conical sieve plate, the conical bottom of the second conical hopper box is a second sieve conical bottom, the bottom of the second sieve conical bottom is connected to a second discharge pipe, the second conical sieve plate is inserted into the second conical hopper box and fits against the upper surface of the second sieve conical bottom, four support plates are also provided around the bottom of the second diversion cone block, the second diversion cone block is sleeved on the first discharge pipe, the first discharge pipe passes through the second discharge pipe, and the four support plates of the second diversion cone block rest on the top of the second conical sieve plate;

[0011] The sieve holes on the second conical sieve plate are smaller than those on the first conical sieve plate.

[0012] The present invention is further provided that a vibration motor is provided on the outer wall of the screening cylinder.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, inert gas is discharged from the top of the fine separation box to the inside, and flows from top to bottom through the first screening bucket assembly and the second screening bucket assembly in sequence to protect the gas during the screening process. Then it is discharged into the collection box. The fine powder discharged into the collection box is also filled with inert gas for protection to ensure the safety of the powder.

[0015] 2. This utility model utilizes the fact that the powder will automatically fall and be graded and screened sequentially through the first conical sieve plate and the second conical sieve plate. The fine material is discharged in grades, and there is no dust during the screening process. The powder is blown down by the airflow, resulting in a better screening effect.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a titanium alloy fine powder screening device.

[0019] Figure 2 This is an exploded structural diagram of a titanium alloy fine powder screening device.

[0020] Figure 3 This is a schematic cross-sectional view of a titanium alloy fine powder screening device.

[0021] Figure 4 This is a schematic diagram of the structure of the first conical sieve plate.

[0022] Figure 5 This is a schematic diagram of the second conical hopper box.

[0023] Figure 6 This is a schematic diagram of the subdivision plate.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Raw material box; 11. First blocking plate; 12. Second blocking plate; 13. Conical feeding hopper; 2. Subdivision box; 21. Air inlet pipe; 22. Limiting block; 3. Screening cylinder; 30. First inclined discharge pipe; 31. Bucket cover; 311. Square sealing frame; 4. Subdivision plate; 41. U-shaped surrounding plate; 42. Cutting plate; 5. First diversion cone block; 6. First conical screen plate; 60. Second conical screen plate; 61. Screen hole; 7. First conical hopper box; 71. First screen conical bottom; 72. First discharge pipe; 73. Second inclined discharge pipe; 8. Second conical hopper box; 81. Second screen conical bottom; 82. Second discharge pipe; 83. Third inclined discharge pipe; 9. Second diversion cone block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-6 This utility model relates to a titanium alloy fine powder screening device, comprising a raw material box 1, a fine particle box 2, a screening cylinder 3, a multi-stage screening structure, and an inert gas device. The raw material box 1 has a feeding structure. The fine particle box 2 has openings at the top and bottom, and contains multiple spliced ​​fine particle plates 4. The bottom of the raw material box 1 is spliced ​​to the top of the fine particle box 2. The screening cylinder 3 has a lid 31 at the top and a first inclined discharge pipe 30 for the powder at the bottom. The fine particle box 2 penetrates the center of the lid. The multi-stage screening structure includes a first screening hopper assembly, a second screening hopper assembly, a first diverting cone 5, and a second diverting cone 9. The first screening hopper assembly is installed above the second screening hopper assembly. The first discharge pipe 72, which is screened on the first screening hopper assembly, passes through the second discharge pipe 82, which is screened on the second screening hopper assembly. The first diversion cone 5 and the second diversion cone 9 are respectively set in the first screening hopper assembly and the second screening hopper assembly. The second discharge pipes both pass through the bottom of the first inclined discharge pipe. The lower ends of the first discharge pipe 72 and the second discharge pipe 82 are respectively fitted with the second inclined discharge pipe 73 and the third inclined discharge pipe 83. The first inclined discharge pipe 30, the second inclined discharge pipe 73 and the third inclined discharge pipe 83 are all inserted into the sealed receiving box. The inert gas device draws the gas out of the receiving box and recovers it. The inert gas device discharges inert gas into the interior of the top of the fine separation box 2.

[0028] Before screening, the titanium alloy fine powder is sealed and stored in the raw material box 1. The titanium alloy fine powder is slowly discharged through the feeding structure and falls into the fine separation box 2, falling from the fine separation plate 4. The clumps of fine powder are broken into smaller particles, reducing agglomeration. The fine powder then falls into the first screening hopper assembly for primary screening. Larger particles are discharged from the first discharge pipe 72, while smaller particles are screened out from the first screening hopper assembly and fall into the second screening hopper assembly. The smaller particles are further screened by the second screening hopper assembly, and even smaller particles are screened out from the second screening hopper assembly. Slightly larger particles are discharged from the second discharge pipe 82. The particles, from largest to smallest, are discharged sequentially from the second inclined discharge pipe 73, the third inclined discharge pipe 83, and the first inclined discharge pipe 30. The grading, screening, and discharge are completed.

[0029] During the sieving process, inert gas is pumped from an inert gas tank into the fine powder separator 2. The inert gas disperses the falling fine powder, which then flows downwards along with the powder. The gas impacts the first and second sieving hoppers, agitating the powder and improving the sieving effect. It also causes the powder to roll. The inert gas and powder then enter the collection box, which is equipped with a suction pipe (containing a filter to prevent the powder from being sucked out). The collected inert gas is then processed for later use.

[0030] The raw material box 1 has a first blocking plate 11 on the side wall at the top opening position, a conical feeding hopper 13 inside the raw material box 1, a second blocking plate 12 on the raw material box 1 that extends to the bottom of the conical feeding hopper 13, and a sealing ring at the bottom of the raw material box 1.

[0031] The conical feeding hopper 13 facilitates material accumulation, allowing fine powder to slowly fall from the bottom of the hopper 13. The discharge speed is determined by the size of the second blocking plate 12. After the fine powder is loaded, the first blocking plate 11 keeps the top opening of the raw material box 1 blocked.

[0032] The fine separation box 2 has an air inlet pipe 21 on each of its four side walls near the top. The inert gas device discharges inert gas into the fine separation box 2 through the four air inlet pipes 21. The sealing ring at the bottom of the raw material box 1 is attached to the top of the fine separation box 2. The fine separation box 2 has a limiting block 22 on each of its four side walls below the air inlet pipe 21. The upper surface of the barrel cover 31 is provided with a square sealing frame 311. The fine separation box 2 is inserted into the square sealing frame 311 and the limiting block 22 is placed on the top of the square sealing frame 311.

[0033] Inert gas is discharged into the fine powder box 2 through four air inlet pipes 21, so that the inert gas can be evenly distributed and diffused from all sides to blow away the fine powder and mix evenly with the fine powder. The square sealing frame 311 can easily seal the side wall of the fine powder box 2.

[0034] The subdivision plate 4 includes a U-shaped enclosure plate 41 and an array of cutting blades 42. The cutting blades 42 are arranged in an array on the inner bottom wall of the U-shaped enclosure plate 41. The cutting blades 42 in adjacent rows on the U-shaped enclosure plate 41 are staggered. The U-shaped enclosure plate 41 is vertically placed in the subdivision box 2, and the blades of the cutting blades 42 face upward.

[0035] like Figure 6 The cutting blade 42 is very thin. When powder falls onto it, it will be diverted, and any clumps will be cut off. With repeated cutting, the clumping phenomenon will be significantly reduced and smaller.

[0036] The first screening hopper assembly includes a first conical hopper box 7 and a first conical sieve plate 6. The conical bottom of the first conical hopper box 7 is a first sieve conical bottom 71. The bottom of the first sieve conical bottom 71 is connected to a first discharge pipe 72. The first conical sieve plate 6 is inserted into the first conical hopper box 7 and fits against the upper surface of the first sieve conical bottom 71. The bottom of the first diverting cone block 5 is provided with four support plates. The four support plates of the first diverting cone block 5 rest on the top of the first conical sieve plate 6.

[0037] The powder first falls onto the first diversion cone 5 and slides outwards, then falls from the top of the first conical sieve plate 6 and rolls downwards, being slowly sieved. The conical bottom 71 of the first sieve only serves to support the first conical sieve plate 6 and does not perform a sieving function. Figure 3 There is a gap between the edge of the first diversion cone 5 and the first conical sieve plate 6.

[0038] The second screening hopper assembly includes a second conical hopper box 8 and a second conical sieve plate 60. The conical bottom of the second conical hopper box 8 is a second sieve conical bottom 81. The bottom of the second sieve conical bottom 81 is connected to a second discharge pipe 82. The second conical sieve plate 60 is inserted into the second conical hopper box 8 and fits against the upper surface of the second sieve conical bottom 81. The bottom of the second diversion cone block 9 is also provided with four support plates. The second diversion cone block 9 is sleeved on the first discharge pipe 72. The first discharge pipe 72 passes through the second discharge pipe 82. The four support plates of the second diversion cone block 9 rest on the top of the second conical sieve plate 60.

[0039] The sieve holes 61 on the second conical sieve plate 60 are smaller than the sieve holes 61 on the first conical sieve plate 6.

[0040] The screening principle of the second screening hopper assembly is the same as that of the first screening hopper assembly. The powder screened from the first conical screen plate 6 falls onto the second diversion cone block 9, then slides down onto the inner top of the second conical screen plate 60, and then rolls down. Some of the finer particles fall from the second conical screen plate 60 and into the bottom of the screening cylinder 3, where they are discharged from the first inclined discharge pipe 30. Other relatively larger fine powder particles that slide down from the second conical screen plate 60 are discharged from the first inclined discharge pipe 30 and the third inclined discharge pipe 83.

[0041] A vibrating motor is installed on the outer wall of the screening cylinder 3. The vibrating motor allows the fine powder to slide, resulting in better filtration and screening effects.

[0042] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A titanium alloy fine powder screening device, characterized in that: The system includes a raw material box (1), a fine separation box (2), a screening cylinder (3), a multi-stage screening structure, and an inert gas device. The raw material box (1) is equipped with a feeding structure. The fine separation box (2) has openings at the top and bottom. The fine separation box (2) is filled with multiple spliced ​​fine separation plates (4). The bottom of the raw material box (1) is spliced ​​with the top of the fine separation box (2). The screening cylinder (3) has a lid (31) at the top and a first inclined discharge pipe (30) for powder at the bottom. The fine separation box (2) passes through the center of the lid. The multi-stage screening structure includes a first screening hopper assembly, a second screening hopper assembly, a first diversion cone (5), and a second diversion cone (9). The first screening hopper assembly is installed above the second screening hopper assembly. The first discharge pipe (72) of the sieving hopper assembly passes through the second discharge pipe (82) of the sieving hopper assembly. The first diversion cone (5) and the second diversion cone (9) are respectively set in the first sieving hopper assembly and the second sieving hopper assembly. The second discharge pipe passes through the bottom of the first inclined discharge pipe. The lower ends of the first discharge pipe and the second discharge pipe are respectively fitted with the second inclined discharge pipe (73) and the third inclined discharge pipe (83). The first inclined discharge pipe (30), the second inclined discharge pipe (73) and the third inclined discharge pipe (83) are all inserted into the sealed receiving box. The inert gas device draws the gas in the receiving box outward and recovers it. The inert gas device discharges inert gas into the interior of the top position of the subdividing box (2).

2. The titanium alloy fine powder screening device according to claim 1, characterized in that, The raw material box (1) has a first blocking plate (11) on the side wall at the top opening position, a conical feeding hopper (13) is provided inside the raw material box (1), a second blocking plate (12) is provided on the raw material box (1) and extends to the bottom of the conical feeding hopper (13), and a sealing ring is provided at the bottom of the raw material box (1).

3. The titanium alloy fine powder screening device according to claim 2, characterized in that, The subdivision box (2) has an air inlet pipe (21) on each of the four side walls near the top. The inert gas device discharges inert gas into the subdivision box (2) from the four air inlet pipes (21). The sealing ring at the bottom of the raw material box (1) is attached to the top of the subdivision box (2). The subdivision box (2) has a limiting block (22) on each of the four side walls below the air inlet pipe (21). The upper surface of the barrel cover (31) is provided with a square sealing frame (311). The subdivision box (2) is inserted into the square sealing frame (311) and the limiting block (22) rests on the top of the square sealing frame (311).

4. The titanium alloy fine powder screening device according to claim 1, characterized in that, The subdivision plate (4) includes a U-shaped enclosure plate (41) and an array of cutting blades (42). The cutting blades (42) are arranged in an array on the inner bottom wall of the U-shaped enclosure plate (41). The cutting blades (42) in two adjacent rows on the U-shaped enclosure plate (41) are staggered. The U-shaped enclosure plate (41) is vertically placed in the subdivision box (2), and the blades of the cutting blades (42) face upward.

5. The titanium alloy fine powder screening device according to claim 1, characterized in that, The first screening bucket assembly includes a first conical bucket box (7) and a first conical screen plate (6). The conical bottom of the first conical bucket box (7) is a first screen conical bottom (71). The bottom of the first screen conical bottom (71) is connected to a first discharge pipe (72). The first conical screen plate (6) is inserted into the first conical bucket box (7) and fits against the upper surface of the first screen conical bottom (71). The bottom of the first diversion cone (5) is provided with four support plates. The four support plates of the first diversion cone (5) rest on the top of the first conical screen plate (6).

6. The titanium alloy fine powder screening device according to claim 5, characterized in that, The second screening bucket assembly includes a second conical bucket box (8) and a second conical screen plate (60). The conical bottom of the second conical bucket box (8) is a second screen conical bottom (81). The bottom of the second screen conical bottom (81) is connected to a second discharge pipe (82). The second conical screen plate (60) is inserted into the second conical bucket box (8) and fits against the upper surface of the second screen conical bottom (81). The bottom of the second diversion cone block (9) is also provided with four support plates. The first discharge pipe (72) is fitted with the second diversion cone block (9). The first discharge pipe (72) passes through the second discharge pipe (82). The four support plates of the second diversion cone block (9) rest on the top of the second conical screen plate (60). The sieve holes (61) on the second conical sieve plate (60) are smaller than the sieve holes (61) on the first conical sieve plate (6).

7. The titanium alloy fine powder screening device according to claim 1, characterized in that, A vibration motor is provided on the outer wall of the screening cylinder (3).

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