A metal powder impurity screening device

Abstract

The utility model discloses a metal powder impurity screening device, including screening box, feeding mechanism, screening mechanism, slagging pipeline and aggregate box, the feeding mechanism is installed at the top of screening box, and through the setting of feeding mechanism, fully stirs the pre-dispersion of metal powder before metal powder enters screening box, and this design effectively avoids the reunion phenomenon of metal powder in the process of feeding, makes powder can be evenly distributed on screening mechanism, greatly improves screening efficiency, ensures that the impurity can be separated sufficiently, improves screening quality, through the setting of screening mechanism, compared with traditional plane screening frame, its unique structure greatly increases screening area, makes metal powder in screening process receive multiple screening, and this design can realize fine classification screening of metal powder, satisfies the strict requirement of different industrial fields to metal powder granularity, provides powerful guarantee for producing high -quality metal powder product.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing equipment technology, specifically a metal powder impurity screening device. Background Technology

[0002] In the production, processing, and application of metal powders, the purity and particle size uniformity of the metal powders play a crucial role in the performance and quality of the final product. However, in the production process of metal powders, due to the characteristics of the raw materials themselves, the limitations of the processing technology, and the influence of various factors such as the production environment, various impurities, such as metal particles of different sizes, non-metal particles, oxides, etc., will inevitably be mixed into the metal powders. The presence of these impurities will not only reduce the quality of the metal powders, but may also have an adverse effect on the subsequent processing technology and the performance of the final product.

[0003] To remove impurities from metal powder and achieve grading and screening of metal powder to meet the stringent requirements of different industrial sectors for the particle size and purity of metal powder, screening devices have been widely used in the metal powder processing industry. At present, although there are various metal powder screening devices on the market, these devices generally have some problems.

[0004] In some traditional screening equipment, a significant proportion of agglomerated powder is present in the metal powder during the feeding process. For example, the common method is to feed the powder directly from the top feed port, and the powder falls directly onto the upper screen. Due to the lack of effective pre-dispersion methods, the metal powder is prone to agglomeration, resulting in uneven distribution of powder on the screening surface, which leads to low screening efficiency and difficulty in effectively separating some impurities. Therefore, we need to propose a metal powder impurity screening device. Utility Model Content

[0005] The purpose of this invention is to provide a metal powder impurity screening device, which pre-disperses the metal powder through the setting of the feeding mechanism, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A metal powder impurity screening device, comprising:

[0008] The screen includes a screening box, a feeding mechanism, a screening mechanism, a slag discharge pipe, and a collection box. The feeding mechanism is installed on the top of the screening box for pre-dispersing the metal powder. The screening mechanism is installed inside the screening box for screening the pre-dispersed metal powder. Three sets of slag discharge pipes are installed through the two side walls of the screening box to cooperate with the screening mechanism. The top of each slag discharge pipe is sealed with a sealing plate. The collection box is inserted and installed at the bottom of the screening box.

[0009] Preferably, the feeding mechanism includes a dispersing tube, a feeding hopper, a rotating rod, a first motor, and stirring blades. The dispersing tube is fixedly installed inside the top of the screening box, the feeding hopper is installed through the top of the screening box, and the bottom of the feeding hopper is installed through the side wall of the dispersing tube. The rotating rod is rotatably installed inside the top of the screening box, the top of which is fixedly connected to the output shaft of the first motor through the screening box, the bottom of which extends into the interior of the dispersing tube, and two sets of stirring blades are fixedly installed on the bottom outer wall of the rotating rod.

[0010] Preferably, the top of the feed hopper is hinged with a sealing cover, the stirring blade is configured as a propeller-type stirring blade, and the metal powder flowing out of the feed hopper is located above the stirring blade.

[0011] Preferably, the screening mechanism includes an S-shaped screening frame, a screen, an elastic element, and a drive assembly. The S-shaped screening frame is installed inside the screening box via the elastic element. Three sets of screens are fixedly installed inside the S-shaped screening frame from top to bottom, and the drive assembly is connected to the bottom of the S-shaped screening frame.

[0012] Preferably, the drive assembly includes a rotating shaft, a second motor, and cams. The rotating shaft is rotatably mounted on the inner walls of both sides of the screening box via bearings, and one end of the rotating shaft is fixedly connected to the second motor through the screening box. Two sets of cams are symmetrically fixedly mounted on the outer wall of the rotating shaft, and the outer curved surface of the cams maintains surface contact with the bottom of the S-shaped screening frame.

[0013] Preferably, the S-shaped screening frame consists of three sets of inclined frames, with the inclined lower ends of the three sets of frames extending into the interior of the three sets of slag discharge pipes respectively. The mesh size of the three sets of screens decreases sequentially from top to bottom, and the difference in mesh size between adjacent screens is controlled between 100 and 150 meshes, so as to achieve graded screening of metal powder.

[0014] Preferably, the elastic element is provided in no less than eight sets, and the elastic element is composed of a telescopic rod and a spring. The spring is sleeved on the outer wall of the telescopic rod, the bottom of the telescopic rod is fixedly installed at the angle of the inner wall of the screening box by a support plate, and the top of the telescopic rod is fixedly installed to the bottom of one end of the frame by a connecting plate.

[0015] Preferably, the bottom side of the screening box is provided with an insertion groove, and the collection box is inserted into the interior of the screening box through the insertion groove, and a rubber sealing ring is provided on its top edge.

[0016] Preferably, the top side of the screening box has a ventilation hole, and a dust filter is installed inside the ventilation hole.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. By setting up a feeding mechanism, the metal powder is fully stirred and pre-dispersed before entering the screening box. This design effectively avoids the agglomeration of metal powder during the feeding process, so that the powder can be evenly distributed on the screening mechanism, which greatly improves the screening efficiency, ensures that impurities can be fully separated, and improves the screening quality.

[0019] 2. By setting up a screening mechanism, this utility model greatly increases the screening area compared to the traditional planar screening frame. This allows the metal powder to be screened multiple times during the screening process. This design enables fine classification and screening of metal powder, meeting the strict requirements of different industrial fields for the particle size of metal powder, and providing a strong guarantee for the production of high-quality metal powder products. Attached Figure Description

[0020] Figure 1 This is a side view of the three-dimensional structure of the present invention;

[0021] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the feeding mechanism of this utility model;

[0023] Figure 4 This is a schematic diagram of the screening mechanism of this utility model.

[0024] In the diagram: 1. Screening box; 2. Feeding mechanism; 21. Dispersion tube; 22. Feed hopper; 23. Rotating rod; 24. First motor; 25. Stirring blade; 3. Screening mechanism; 31. S-shaped screening frame; 32. Screen; 33. Elastic component; 34. Drive assembly; 341. Rotating shaft; 342. Second motor; 343. Cam; 4. Slag discharge pipe; 5. Insertion groove; 6. Collection box; 7. Dust filter. Detailed Implementation

[0025] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4 This utility model provides a technical solution:

[0027] A metal powder impurity screening device, comprising:

[0028] The screening box 1, feeding mechanism 2, screening mechanism 3, slag discharge pipe 4, and collection box 6 are provided. The feeding mechanism 2 is installed on the top of the screening box 1 and is used to pre-disperse the metal powder. The screening mechanism 3 is installed inside the screening box 1 and is used to screen the pre-dispersed metal powder. Three sets of slag discharge pipes 4 are installed through the two side walls of the screening box 1 to cooperate with the screening mechanism 3. The top of each slag discharge pipe 4 is sealed with a sealing plate. The collection box 6 is inserted into the bottom of the screening box 1.

[0029] The screening box 1 is made of stainless steel, which has good corrosion resistance and strength and can withstand vibration and impact during the screening process. The sealing plate is made of rubber, which can effectively prevent dust leakage during the screening process. The collection box 6 adopts a drawer-type design, which facilitates the collection of qualified metal powder after screening and is easy to clean and replace. The overall structure is compact and each component has a clear division of labor, which can achieve efficient screening of metal powder and separation of impurities, while having good sealing performance to reduce dust pollution.

[0030] In an optional embodiment: the feeding mechanism 2 includes a dispersing tube 21, a feeding hopper 22, a rotating rod 23, a first motor 24, and stirring blades 25. The dispersing tube 21 is fixedly installed in the inner top of the screening box 1. The feeding hopper 22 is installed through the top of the screening box 1, and the bottom of the feeding hopper 22 is installed through the side wall of the dispersing tube 21. The rotating rod 23 is rotatably installed in the inner top of the screening box 1. The top of the rotating rod 23 is fixedly connected to the output shaft of the first motor 24 through the screening box 1, and the bottom extends into the interior of the dispersing tube 21. Two sets of stirring blades 25 are fixedly installed on the bottom outer wall of the rotating rod 23.

[0031] In an optional embodiment: the dispersion tube 21 is cylindrical, which can provide sufficient dispersion space for the metal powder. The first motor 24 is a three-phase asynchronous motor of model Y90S-4 with a power of 1.1kW and a speed of 1400r / min, which can provide stable power to the rotating rod 23. The rotating rod 23 is driven by the first motor 24 to rotate, which can quickly disperse the agglomerated metal powder and realize the pre-dispersion function. The pre-dispersion of metal powder by mechanical stirring improves the dispersion effect of powder and provides a good foundation for the subsequent screening process.

[0032] In an optional embodiment: the top of the feed hopper 22 is hinged with a sealing cover, the stirring blade 25 is configured as a propeller-type stirring blade, and the metal powder flowing out of the feed hopper 22 is located above the stirring blade 25.

[0033] In an optional embodiment: the sealing cover is made of transparent plexiglass, which makes it easy to observe the feeding situation and prevents dust from flying during the feeding process. The propeller-type stirring blade can generate axial and radial mixing forces when rotating, which further enhances the dispersion effect of metal powder. Placing the metal powder flowing out of the feed hopper 22 above the stirring blade 25 can ensure that the powder falls directly into the stirring area and improves the dispersion efficiency.

[0034] In an optional embodiment: the screening mechanism 3 includes an S-shaped screening frame 31, a screen 32, an elastic element 33 and a drive assembly 34. The S-shaped screening frame 31 is installed inside the screening box 1 through the elastic element 33. Three sets of screens 32 are fixedly installed inside the S-shaped screening frame 31 from top to bottom, and the drive assembly 34 is connected to the bottom of the S-shaped screening frame 31.

[0035] In an optional embodiment: the S-shaped screening frame 31 is made of aluminum alloy, which is lightweight and high-strength. Its unique S-shaped structure can prolong the residence time of metal powder in the screening frame and improve the screening effect. The screen 32 is made of stainless steel woven mesh, which has high wear resistance and corrosion resistance and can ensure long-term stable screening operation. The elastic element 33 provides elastic support for the screening frame, so that it can vibrate when it is driven by the drive component 34.

[0036] In an optional embodiment: the drive assembly 34 includes a rotating shaft 341, a second motor 342 and a cam 343. The rotating shaft 341 is rotatably mounted on the inner walls of both sides of the screening box 1 via bearings, and one end of the rotating shaft 341 is fixedly connected to the second motor 342 through the screening box 1. Two sets of cams 343 are symmetrically fixedly mounted on the outer wall of the rotating shaft 341, and the outer curved surface of the cam 343 is in surface contact with the bottom of the S-shaped screening frame 31.

[0037] In an optional embodiment: the second motor 342 is a three-phase asynchronous motor of model Y100L-4 with a power of 2.2kW and a speed of 1420r / min, which can provide sufficient power to drive the rotating shaft 341 to rotate. The cam 343 is made of 45 steel and has been quenched to achieve a surface hardness of HRC45-50 and good wear resistance. The second motor 342 drives the rotating shaft 341 to rotate, so that the cam 343 contacts the bottom of the S-shaped screening frame 31 and pushes it to vibrate.

[0038] In an optional embodiment: the S-shaped screening frame 31 consists of three sets of inclined frames, the inclined lower ends of the three sets of frames extending into the interior of the three sets of slag discharge pipes 4 respectively, and the mesh size of the three sets of screens 32 decreasing from top to bottom, with the difference in mesh size between adjacent screens controlled between 100-150 mesh, so as to achieve graded screening of metal powder.

[0039] In an optional embodiment: the inclination angle of the three sets of frames is 30°, which can ensure that the metal powder flows smoothly into the slag discharge pipe 4 under the action of gravity. The aperture of the screen 32 decreases from top to bottom (e.g., 200 mesh, 300 mesh, 400 mesh). This aperture setting can accurately classify and screen the metal powder. Through reasonable frame inclination angle and screen aperture design, the classification and screening of metal powder can be realized, which can meet the requirements of different production needs for metal powder particle size and improve the applicability of the screening device.

[0040] In an optional embodiment: there are at least eight sets of elastic elements 33, and each elastic element 33 consists of a telescopic rod and a spring. The spring is sleeved on the outer wall of the telescopic rod, the bottom of the telescopic rod is fixedly installed at the angle of the inner wall of the screening box 1 by a support plate, and the top of the telescopic rod is fixedly installed to the bottom of one end of the frame by a connecting plate.

[0041] In an optional embodiment: the spring is made of 65Mn spring steel, which has good elasticity and fatigue strength. The telescopic rod is made of stainless steel with a diameter of 10mm and its length can be adjusted within a certain range to adapt to different installation requirements. Through the setting of multiple sets of elastic elements 33, the stability and balance of the S-shaped screening frame 31 during vibration can be guaranteed. The design of the elastic element 33 provides good elastic support for the screening frame, which can effectively buffer the vibration impact force, extend the service life of the screening frame and other components, and ensure the stable operation of the screening process.

[0042] In an optional embodiment: a slot 5 is provided on one side of the bottom of the screening box 1, and the collection box 6 is inserted into the interior of the screening box 1 through the slot 5, and a rubber sealing ring is provided on its top edge.

[0043] In an optional embodiment: the size of the insertion slot 5 is adapted to the collection box 6, which facilitates the insertion and removal of the collection box 6. The rubber sealing ring can effectively prevent dust from leaking from the connection between the collection box 6 and the screening box 1 during the screening process. This design makes the installation and disassembly of the collection box 6 convenient and quick, while ensuring the sealing of the screening device and reducing dust pollution.

[0044] In an optional embodiment, a ventilation hole is provided on one side of the top of the screening box 1, and a dust filter 7 is installed inside the ventilation hole.

[0045] In an optional embodiment: the diameter of the ventilation hole is 100mm, which can ensure the air circulation inside the screening box 1. The dust filter 7 is made of metal woven mesh with a pore size of 0.1mm, which can effectively filter dust and prevent dust leakage. The setting of ventilation hole and dust filter 7 can ensure the air circulation inside the screening box 1 while preventing dust from polluting the working environment, which is conducive to improving working conditions, and also helps the equipment to dissipate heat and extend the service life of the equipment.

[0046] Working principle: When using this utility model, metal powder is added into the dispersion tube 21 through the feed hopper 22. The first motor 24 is started, and its output shaft drives the rotating rod 23 to rotate, which in turn causes the two sets of stirring blades 25 located in the dispersion tube 21 to rotate. The metal powder flows into the dispersion tube 21 from the feed hopper 22. Under the stirring action of the propeller-type stirring blades, the agglomerated metal powder is broken up and evenly dispersed before falling onto the screening mechanism 3 below.

[0047] When the second motor 342 in the drive assembly 34 starts, its output shaft drives the rotating shaft 341 to rotate. The two sets of cams 343 on the rotating shaft 341 rotate accordingly. Since the outer curved surface of the cam 343 is in surface contact with the bottom of the S-shaped screening frame 31, the cam 343 continuously pushes the S-shaped screening frame 31 to vibrate up and down during the rotation. After the dispersed metal powder falls into the S-shaped screening frame 31, it passes through each layer of screen 32 in sequence under the action of vibration. Impurities are trapped on the corresponding screen 32 and slide down the inclined frame to the corresponding slag discharge pipe 4. The metal powder that meets the requirements passes through the lower screen 32 and falls into the bottom collection box 6 in the screening box 1.

[0048] When slag discharge is required, open the sealing plate at the top of the slag discharge pipe 4. The impurities trapped on each layer of screen 32 are discharged from the screening box 1 through the slag discharge pipe 4 under the action of vibration and gravity. After the slag discharge is completed, close the sealing plate and continue the screening work.

[0049] The control method of the first motor and the second motor in this application is to automatically control them through a PLC (Programmable Logic Controller). A Mitsubishi FX3U series PLC is selected. The control circuit of the controller can be implemented by a person skilled in the art through simple programming. It is common knowledge in the field. Furthermore, this application is mainly used to protect the structure, shape and their combination. Therefore, this application will not explain the control method and circuit connection in detail.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A metal powder impurity screening device, characterized in that, include: The screening box (1), feeding mechanism (2), screening mechanism (3), slag discharge pipe (4) and collection box (6) are provided. The feeding mechanism (2) is installed on the top of the screening box (1) for pre-dispersing the metal powder. The screening mechanism (3) is installed inside the screening box (1) for screening the pre-dispersed metal powder. Three sets of slag discharge pipes (4) are installed through the two side walls of the screening box (1) to cooperate with the screening mechanism (3). The top of the slag discharge pipes (4) is sealed with a sealing plate. The collection box (6) is inserted into the bottom of the screening box (1).

2. The metal powder impurity screening device according to claim 1, characterized in that: The feeding mechanism (2) includes a dispersing tube (21), a feeding hopper (22), a rotating rod (23), a first motor (24), and stirring blades (25). The dispersing tube (21) is fixedly installed in the inner top of the screening box (1). The feeding hopper (22) is installed through the top of the screening box (1), and the bottom of the feeding hopper (22) is installed through the side wall of the dispersing tube (21). The rotating rod (23) is rotatably installed in the inner top of the screening box (1). The top of the rotating rod (23) is fixedly connected to the output shaft of the first motor (24) through the screening box (1), and the bottom extends into the interior of the dispersing tube (21). Two sets of stirring blades (25) are fixedly installed on the bottom outer wall of the rotating rod (23).

3. The metal powder impurity screening device according to claim 2, characterized in that: The top of the feed hopper (22) is hinged with a sealing cover, the stirring blade (25) is configured as a propeller-type stirring blade, and the metal powder flowing out of the feed hopper (22) is located above the stirring blade (25).

4. The metal powder impurity screening device according to claim 1, characterized in that: The screening mechanism (3) includes an S-shaped screening frame (31), a screen (32), an elastic element (33), and a drive assembly (34). The S-shaped screening frame (31) is installed inside the screening box (1) through the elastic element (33). Three sets of screens (32) are fixedly installed inside the S-shaped screening frame (31) from top to bottom, and the drive assembly (34) is connected to the bottom of the S-shaped screening frame (31).

5. The metal powder impurity screening device according to claim 4, characterized in that: The drive assembly (34) includes a rotating shaft (341), a second motor (342), and a cam (343). The rotating shaft (341) is rotatably mounted on the inner walls of both sides of the screening box (1) via bearings, and one end of the rotating shaft (341) passes through the screening box (1) and is fixedly connected to the second motor (342). Two sets of cams (343) are symmetrically fixedly mounted on the outer wall of the rotating shaft (341), and the outer curved surface of the cam (343) is in surface contact with the bottom of the S-shaped screening frame (31).

6. The metal powder impurity screening device according to claim 4, characterized in that: The S-shaped screening frame (31) consists of three sets of inclined frames. The inclined lower ends of the three sets of frames extend into the interior of the three sets of slag discharge pipes (4). The mesh size of the three sets of screens (32) decreases from top to bottom. The difference in mesh size between adjacent screens is controlled between 100 and 150 meshes to achieve graded screening of metal powder.

7. A metal powder impurity screening device according to claim 4, characterized in that: The elastic element (33) is provided in no less than eight sets, and the elastic element (33) is composed of a telescopic rod and a spring. The spring is sleeved on the outer wall of the telescopic rod. The bottom of the telescopic rod is fixedly installed at the angle of the inner wall of the screening box (1) by a support plate. The top of the telescopic rod is fixedly installed to the bottom of one end of the frame by a connecting plate.

8. The metal powder impurity screening device according to claim 1, characterized in that: The bottom side of the screening box (1) is provided with an insertion slot (5), and the collection box (6) is inserted into the interior of the screening box (1) through the insertion slot (5), and a rubber sealing ring is provided on its top edge.

9. A metal powder impurity screening device according to claim 1, characterized in that: The top side of the screening box (1) has a ventilation hole, and a dust filter (7) is installed inside the ventilation hole.

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