Alloy powder airflow mixing and grading integrated system

Abstract

The utility model discloses an alloy powder airflow mixing and grading integrated system which is sequentially provided with a feeding device, at least two airflow grading single machines connected in series, a cyclone separator, a dust remover and an induced draft fan. A feeding pipe is connected between a raw material inlet of the airflow classification single machine close to one side of the feeding device and the feeding device, and a high-pressure air inlet is formed in the feeding pipe; the coarse powder outlet, close to one side of the feeding device, of the airflow classification single machine is connected with the screening device, the screening device is used for vibrating and screening discharged coarse powder again, the airflow classification single machine is simple in structure and novel in design, the multiple classification single machines are connected in series to pre-disperse materials, the classification efficiency is improved, the large particle existence rate is reduced, and the screening effect is good. And the circular screening machine is additionally arranged for screening again, the grading precision and the fine powder extraction rate are improved, and through the design of the feeding device, the device can conduct the material mixing procedure while conducting airflow grading operation.

Description

Technical Field

[0001] The utility model relates to the technical field of mixing and grading, in particular to an alloy powder airflow mixing and grading integrated system. Background Art

[0002] With the rapid development of modern industrial technology, alloy powders are widely used in aerospace, automotive industry, biomedicine, 3D printing and other fields due to their unique physical, chemical and mechanical properties. The application quality and performance of alloy powders depend largely on the uniformity and efficiency of their mixing process, which requires mixing equipment to ensure the uniform distribution and stability of powders during the mixing process.

[0003] Traditional alloy powder mixing equipment mostly uses mechanical stirring, ball milling and other methods. Although these methods can achieve powder mixing to a certain extent, they have many shortcomings. For example, mechanical stirring easily leads to powder agglomeration, affecting the uniformity of mixing; ball milling has problems such as long mixing time, high energy consumption, and severe equipment wear. In addition, these traditional methods often make it difficult to effectively control the powder particle size and its distribution, affecting the performance of the final alloy product. Utility Model Content

[0004] The purpose of the utility model is to provide an alloy powder airflow mixing and grading integrated system to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an integrated system for airflow mixing and grading of alloy powders, comprising a feeding device, at least two airflow grading units connected in series, a cyclone separator, a dust collector and an induced draft fan which are arranged in sequence, wherein the feeding device is used to convey at least two kinds of raw material powders, a feeding pipe is connected between the raw material inlet of the airflow grading unit near one side of the feeding device and the feeding device, and a high-pressure air inlet is arranged on the feeding pipe; a coarse powder outlet on the airflow grading unit near one side of the feeding device is connected to a screening device, and the screening device is used to vibrate and screen the discharged coarse powder again.

[0006] Furthermore, the feeding device comprises at least two groups of screw feeders, and a feeding pipe is connected between the discharge ends of each group of screw feeders, and the middle part of the feeding pipe is connected to the feeding pipe.

[0007] Furthermore, the screening device includes at least one circular screening machine, which includes a screen frame and a base. The screen frame is installed above the base, and the screen frame and the base are connected by a plurality of elastic supports. The screen frame is driven by a vibration motor, and three layers of screen plates are arranged above the top of the screen frame, and a discharge pipe is arranged on the side end of each layer of the screen plate.

[0008] Furthermore, a dust cover is provided on the top of the uppermost sieve plate, and the top of the dust cover is connected to the coarse powder outlet of the airflow classification unit through a hose.

[0009] Furthermore, the classifying wheel in the airflow classifying unit is provided with 60 blades, and the blades have an inclination angle of 60 degrees and a thickness of 2 mm.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model has a simple structure and a novel design. By connecting a plurality of single grading machines in series, the materials are pre-dispersed to improve the grading efficiency and reduce the presence rate of large particles. A circular screen is added for re-screening to improve the grading accuracy and fine powder extraction rate. The design of the feeding device enables the device to perform a mixing process while performing an airflow grading operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front view of an alloy powder airflow mixing and grading integrated system of the utility model;

[0013] Figure 2 It is a top view of an alloy powder airflow mixing and grading integrated system of the utility model.

[0014] In the figure, feeding device-1, air flow classification unit-2, cyclone separator-3, dust collector-4, induced draft fan-5, screw feeder-6, feeding pipe-7, feeding pipe-8, screen frame-9, base-10, elastic support-11, vibration motor-12, screen plate-13, discharge pipe-14, dust cover-15, hose-16. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] like Figure 1 and Figure 2As shown, an alloy powder airflow mixing and grading integrated system comprises a feeding device 1, at least two airflow grading units 2 connected in series, a cyclone separator 3, a dust collector 4 and an induced draft fan 5 which are arranged in sequence. The feeding device 1 is used to convey at least two kinds of raw material powders. A feeding pipe 8 is connected between the raw material inlet of the airflow grading unit 2 near one side of the feeding device 1 and the feeding device 1, and a high-pressure air inlet is arranged on the feeding pipe 8. A coarse powder outlet on the airflow grading unit 2 near one side of the feeding device 1 is connected to a screening device, and the screening device is used to vibrate and screen the discharged coarse powder again.

[0017] In this embodiment, the feeding device 1 includes at least two groups of screw feeders 6 , and a feeding pipe 7 is connected between the discharge ends of each group of screw feeders 6 , and the middle part of the feeding pipe 7 is connected to the feeding pipe 8 .

[0018] In this embodiment, the screening device includes at least one circular screening machine, which includes a screen frame 9 and a base 10. The screen frame 9 is installed above the base 10. The screen frame 9 and the base 10 are connected by a plurality of elastic supports 11. The screen frame 9 is driven by a vibration motor 12. Three layers of screen plates 13 are arranged above the top of the screen frame 9, and a discharge pipe 14 is arranged on the side end of each layer of the screen plate 13.

[0019] In this embodiment, a dust cover 15 is provided on the top of the uppermost sieve plate 13 , and the top of the dust cover 15 is connected to the coarse powder outlet of the airflow classifier 2 via a hose 16 .

[0020] In this embodiment, 60 blades are arranged on the classifying wheel in the airflow classifying unit 2, and the blades have an inclination angle of 60 degrees and a thickness of 2 mm. This blade design can screen powders with finer particle sizes.

[0021] The working principle of this embodiment is as follows:

[0022] The user pours different raw material powders into the hoppers of each group of spiral feeders 6, and then feeds the materials through each group of spiral feeders 6, and then feeds the materials into the airflow classifier 2 through the feeding pipe 8 under the action of the induced draft fan 5, and the powder particle size is screened by the airflow classifier 2, the cyclone separator 3, and the dust collector 4 in turn. At the same time, when various raw material powders enter the airflow classifier 2, they will collide and mix with each other under the action of the airflow;

[0023] In addition, since the existing airflow classifier has a wide distribution range of powder particle size after classification, fine powder that meets the requirements may be excluded along with large particle powder. Therefore, a circular screen is provided at the coarse powder outlet on the airflow classifier 2, so that fine powder that meets the requirements in the large particle powder can be re-screened out through secondary vibration screening.

[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An alloy powder airflow mixing and grading integrated system, characterized by: A feeding device, at least two airflow classifying units connected in series, a cyclone separator, a dust collector and an induced draft fan are arranged in sequence, the feeding device is used to convey at least two kinds of raw material powders, a feeding pipe is connected between the raw material inlet of the airflow classifying unit close to one side of the feeding device and the feeding device, and the feeding pipe is provided with a high-pressure air inlet; The coarse powder outlet on the airflow classification unit close to the feeding device is connected with a screening device, and the screening device is used to vibrate and screen the discharged coarse powder again.

2. The alloy powder airflow mixing and grading integrated system according to claim 1, characterized in that: The feeding device comprises at least two groups of screw feeders, and a feeding pipe is connected between the discharge ends of each group of screw feeders, and the middle part of the feeding pipe is communicated with the feeding pipe.

3. The alloy powder airflow mixing and grading integrated system according to claim 1, characterized in that: The screening device includes at least one circular screening machine, which includes a screen frame and a base. The screen frame is installed above the base, and the screen frame and the base are connected by a plurality of elastic supports. The screen frame is driven by a vibration motor, and three layers of screen plates are arranged above the top of the screen frame, and a discharge pipe is arranged on the side end of each layer of the screen plate.

4. The alloy powder airflow mixing and grading integrated system according to claim 3, characterized in that: A dust cover is provided on the top of the uppermost sieve plate, and the top of the dust cover is connected to the coarse powder outlet of the airflow classification unit through a hose.

5. The alloy powder airflow mixing and grading integrated system according to claim 1, characterized in that: The classifying wheel in the airflow classifying unit is provided with 60 blades, and the blades have an inclination angle of 60 degrees and a thickness of 2 mm.

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