Multi-stage screening device for metal powder

Abstract

The utility model relates to a metal powder multistage screening device which comprises a machine box, a plurality of screening mechanisms are sequentially arranged in the machine box from top to bottom, the screening mechanisms comprise a plurality of screening trays arranged in the machine box, and vibration driving structures are arranged outside the screening trays. A plurality of discharging windows are formed in the front side of the machine box, the sieve trays are arranged in the discharging windows respectively, and a plurality of material guiding flat pipes are fixedly installed on the surface of the front side of the machine box. According to the multi-stage screening device for the metal powder, after the metal powder falls on the tops of the screening trays, the vibration driving structures outside the screening trays operate to drive the screening trays to vibrate, fine metal powder sequentially falls downwards after being screened and finally falls into the bottom box from the bottom of the machine box, and coarse metal powder left above the multiple screening trays slides into the multiple material guiding flat pipes along with vibration and then falls into the bottom box to be stored; a plurality of partition plates are installed in the bottom box and can separate the metal powder falling into the bottom box, and therefore the effect that the metal powder with different particle sizes is automatically stored in a classified mode is achieved.

Description

Technical Field

[0001] This utility model relates to the field of screening technology, specifically a multi-stage screening device for metal powder. Background Technology

[0002] In modern industrial production, metal powders are important raw materials and are widely used in powder metallurgy, 3D printing, electronic materials, coatings, catalysts and other fields. The particle size distribution of metal powders has a significant impact on their performance and application effects. Therefore, accurate and efficient screening of metal powders is one of the key steps to ensure product quality.

[0003] Traditional multi-stage metal powder screening devices have a significant limitation: after the screening process is completed, powder larger than the screen mesh size remains in the corresponding screening tank. In order to obtain these metal powders of different particle sizes, operators usually need to manually or with the help of tools remove the powders for subsequent classification, storage, or further processing. This process is not only time-consuming and labor-intensive, but also increases the labor intensity. Therefore, a new multi-stage metal powder screening device is proposed to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the prior art, the present invention provides a multi-stage screening device for metal powder to overcome the above-mentioned shortcomings of the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A multi-stage metal powder screening device includes a housing. Multiple screening mechanisms are arranged sequentially from top to bottom inside the housing. Each screening mechanism includes multiple screen discs disposed inside the housing. Vibration drive structures are provided on the exterior of each screen disc. Multiple discharge windows are opened on the front side of the housing, and the multiple screen discs are respectively disposed inside the discharge windows. Multiple guide tubes are fixedly installed on the front surface of the housing, and the guide tubes are respectively sleeved on the exterior of the discharge windows. A base box is movably installed at the bottom of the housing, and the outlets of the multiple guide tubes all face the base box.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, each of the vibration drive structures includes multiple I-shaped brackets, which are respectively installed on the front inner wall and the rear inner wall of the housing. A mounting frame is slidably installed on the outside of the multiple I-shaped brackets included in each vibration drive structure. Each screen plate is installed on the top of a mounting frame. Multiple springs are fixedly installed on the top and bottom of each mounting frame, and the multiple springs are respectively sleeved on the outside of the multiple I-shaped brackets corresponding to each mounting frame. A vibration motor is also fixedly installed on the bottom of each mounting frame.

[0009] Furthermore, a U-shaped protective plate is fixedly installed on the top of each mounting frame, and the height of each U-shaped protective plate is less than the height of the discharge window.

[0010] Furthermore, the diameter of the filter holes of the plurality of screen discs decreases sequentially from top to bottom, and the plurality of mounting frames and screen discs are inclined toward the plurality of guide flat tubes respectively.

[0011] Furthermore, a feeding port is provided on the top of the chassis, and a feeding guard plate is provided around the top of the feeding port.

[0012] Furthermore, the bottom box is equipped with multiple partitions, which divide the inner cavity of the bottom box into multiple storage compartments, and each storage compartment is equipped with a corresponding storage box.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: after the metal powder falls to the top of the screen, the vibration drive structure outside the screen runs, driving the screen to vibrate. The fine metal powder falls downwards in sequence after being screened, and finally falls into the bottom box from the bottom of the machine. The coarse metal powder remaining above the multiple screens slides into multiple guide tubes with vibration, and then falls into the bottom box for storage. Multiple partitions are installed inside the bottom box to separate the metal powder falling into the bottom box, thereby achieving the effect of automatically classifying and storing metal powder of different particle sizes. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the multi-stage metal powder sieving device of this utility model from one perspective.

[0015] Figure 2 This is a schematic diagram of the multi-stage metal powder sieving device of this utility model from another perspective.

[0016] Figure 3 This is a partial cross-sectional structural diagram of the multi-stage metal powder screening device of this utility model;

[0017] Figure 4 This is a schematic diagram of a vibration-driven structure.

[0018] Figure 5 This is a schematic diagram of the external structure of the chassis;

[0019] Figure 6 This is a schematic diagram of the sieve disc structure;

[0020] Figure 7 This is a schematic diagram of the flat tube structure for material feeding;

[0021] Figure 8 for Figure 3 Enlarged structural diagram at point A in the middle.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Chassis; 2. Screen plate; 3. Discharge window; 4. Guide tube; 5. Base box; 6. C-shaped bracket; 7. Mounting frame; 8. Spring; 9. Vibration motor; 10. U-shaped material guard plate; 11. Feed guard plate. Detailed Implementation

[0024] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0025] Example 1, as Figures 1 to 7 As shown, a multi-stage metal powder screening device includes a housing 1. Multiple screening mechanisms are arranged sequentially from top to bottom inside the housing 1. Each screening mechanism includes multiple screen discs 2 disposed inside the housing 1. Vibration drive structures are provided on the exterior of each screen disc 2. Multiple discharge windows 3 are opened on the front side of the housing 1, and the multiple screen discs 2 are respectively disposed inside the multiple discharge windows 3. Multiple guide tubes 4 are fixedly installed on the front surface of the housing 1, and the multiple guide tubes 4 are respectively sleeved on the exterior of the multiple discharge windows 3. A bottom box 5 is movably installed at the bottom of the housing 1, and the outlets of the multiple guide tubes 4 all face the bottom box 5.

[0026] It should be noted that the bottom box 5 has multiple partitions inside, which divide the inner cavity of the bottom box 5 into multiple storage compartments. Each storage compartment has a corresponding storage box. The multiple storage boxes are located below the sieve plate 2 and multiple guide flat tubes 4, respectively. The purpose is to allow the storage box to be taken out along with the metal powder when the metal powder falls into the bottom box 5 for use.

[0027] In use, after the metal powder falls to the top of the sieve disc 2, the vibration drive structure set on the outside of the multiple sieve discs 2 can drive the multiple sieve discs 2 to vibrate. The screened fine metal powder falls downwards in sequence and finally falls from the bottom of the machine box 1 into the bottom box 5. The coarse metal powder remaining above the multiple sieve discs 2 slides into the multiple guide tubes 4 with the vibration. The metal powder entering the multiple guide tubes 4 falls directly into the bottom box 5 for storage. At this time, the multiple partitions installed inside the bottom box 5 can separate the metal powder falling into the bottom box 5, thereby achieving the effect of classifying and storing metal powder of different particle sizes.

[0028] Example 2, as Figure 3 and Figure 8 As shown, this embodiment is a further improvement based on embodiment 1, and its specific details are as follows:

[0029] Each vibration drive structure includes multiple I-shaped brackets 6, which are fixedly installed on the front and rear inner walls of the housing 1. Each vibration drive structure has a mounting frame 7 slidably installed on the outside of the multiple I-shaped brackets 6. Each screen plate 2 is fixedly installed on the top of a mounting frame 7. Multiple springs 8 are fixedly installed on the top and bottom of each mounting frame 7, and the multiple springs 8 are respectively sleeved on the outside of the multiple I-shaped brackets 6 corresponding to each mounting frame 7. A vibration motor 9 is fixedly installed on the bottom of each mounting frame 7.

[0030] With this setup, multiple mounting frames 7 are supported inside the housing 1 by multiple sets of I-shaped brackets 6. At this time, multiple springs 8 support the mounting frames 7 on the outside of the multiple I-shaped brackets 6, which can enhance the vibration frequency of the mounting frames 7. Then, the vibration motor 9 runs and drives the mounting frames 7 and the screen plate 2 to vibrate, thus achieving the screening effect.

[0031] Example 3, as Figures 3-4 As shown, this embodiment is a further improvement based on embodiment 2, and its specific details are as follows:

[0032] Each mounting frame 7 is fixedly installed with a U-shaped protective plate 10 on its top, and the height of each U-shaped protective plate 10 is less than the height of the discharge window 3.

[0033] This configuration prevents the metal powder on the top of the screen plate 2 from splashing outwards during vibration by installing the U-shaped protective plate 10. The height of the U-shaped protective plate 10 is less than the height of the discharge window 3, which prevents the mounting frame 7 from colliding with the machine box 1 during vibration.

[0034] Example 4, as Figure 3 As shown, this embodiment is a further improvement based on embodiment 1, and its specific details are as follows:

[0035] The diameter of the filter holes of the multiple screen discs 2 decreases from top to bottom, and the multiple mounting frames 7 and screen discs 2 are inclined toward the multiple guide flat tubes 4 respectively.

[0036] This setup achieves the effect of multi-stage sequential sieving and facilitates the falling of metal powder remaining on the top of the sieve plate 2 into the interior of the guide tube 4.

[0037] Example 5, as Figures 1-4 As shown, this embodiment is a further improvement based on embodiment 1, and its specific details are as follows:

[0038] The top of the casing 1 is provided with a feeding port, and the top of the feeding port is provided with feeding guard plates 11.

[0039] This design allows for easy feeding of metal powder into the machine housing 1 through the feeding port, while the installed feed guard plate 11 provides external protection for the feeding port.

[0040] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A multi-stage metal powder screening device comprising a cabinet (1), characterized in that: The inside of the cabinet (1) is sequentially provided with multiple screening mechanisms from top to bottom, the multiple screening mechanisms comprise multiple sieve trays (2) arranged in the inside of the cabinet (1), the outside of each of the multiple sieve trays (2) is provided with a vibration driving structure, the front side of the cabinet (1) is provided with multiple discharge windows (3), each of the multiple sieve trays (2) is arranged in the inside of each of the multiple discharge windows (3), the front surface of the cabinet (1) is fixedly provided with multiple material guiding flat pipes (4), each of the multiple material guiding flat pipes (4) is sleeved to the outside of each of the multiple discharge windows (3), the bottom of the cabinet (1) is movably provided with a bottom box (5), and the outlet of each of the multiple material guiding flat pipes (4) is towards the bottom box (5).

2. A multi-stage metal powder screening apparatus according to claim 1, wherein: Each of the vibration driving structures comprises multiple Z-shaped supports (6), and each of the multiple Z-shaped supports (6) is arranged on the inner wall of the front side and the inner wall of the rear side of the cabinet (1); the outside of each of the multiple Z-shaped supports (6) comprised by each of the vibration driving structures is slidably provided with an installation frame (7); each of the sieve trays (2) is arranged on the top of each of the installation frames (7); the top and the bottom of each of the installation frames (7) are fixedly provided with multiple springs (8), and each of the multiple springs (8) is sleeved to the outside of each of the multiple Z-shaped supports (6) corresponding to each of the installation frames (7); and the bottom of each of the installation frames (7) is further fixedly provided with a vibration motor (9).

3. A multi-stage metal powder screening apparatus according to claim 2, wherein: The top of each of the installation frames (7) is fixedly provided with a U-shaped material protecting plate (10), and the height of each of the U-shaped material protecting plates (10) is less than the height of the discharge window (3).

4. A multi-stage metal powder screening apparatus according to claim 2, wherein: The diameters of the filter holes of the multiple sieve trays (2) are sequentially reduced from top to bottom, and each of the multiple installation frames (7) and the sieve tray (2) is inclined to each of the multiple material guiding flat pipes (4).

5. A multi-stage metal powder screening apparatus as claimed in claim 1, wherein: The top of the cabinet (1) is provided with a feeding opening, and the top of the feeding opening is provided with a feeding protecting plate (11).

6. A multi-stage metal powder screening apparatus as claimed in claim 1, wherein: The inside of the bottom box (5) is provided with multiple partitions, the inside cavity of the bottom box (5) is divided into multiple storage spaces by the multiple partitions, and each of the storage spaces is correspondingly provided with a storage box.

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