Powder conveying and screening system

Abstract

The utility model provides a powder conveying and screening system which comprises a machine frame, a powder collecting barrel, a waste barrel, a dust collecting barrel and a direct discharge screen, the powder collecting barrel and the waste barrel are installed at the bottom of the machine frame, a support platform for installing the direct discharge screen is arranged in the middle of the machine frame, and the direct discharge screen is connected with the material collecting barrel through a first conveying pipe. The straight discharging sieve is connected with the waste material barrel through a second conveying pipe, the dust collecting barrel is installed on the top of the machine frame and connected with the straight discharging sieve through a third conveying pipe, a third connecting pipe is arranged on the dust collecting barrel to be connected with the powder supply device, the powder supply device comprises two powder supply barrels, a power supply ventilation connector is further arranged below the machine frame, and the power supply ventilation connector is connected with the waste material barrel through a second conveying pipe. And the powder supply barrel, the material receiving barrel and the waste barrel are respectively provided with a gas protection pipeline which is connected with a power supply ventilation interface. Metal powder in the two feeding barrels is extracted through vacuumizing of the dust collecting barrel and conveyed downwards to be screened and collected through the straight discharging screen, two-in-one operation is achieved, and practicability is good.

Description

Technical Field

[0001] This utility model relates to a powder conveying and screening system. Background Technology

[0002] In the current booming development of 3D printing technology, metal powder, as a key consumable, is crucial for print quality and cost control. Traditional powder delivery and handling processes present numerous problems. On the one hand, the recycling efficiency of metal powder after printer use is low, resulting in a large amount of reusable powder being idle or discarded, leading to resource waste and increased costs. On the other hand, the lack of an effective mixing and drying mechanism results in inconsistent powder quality after reuse. Differences in particle size distribution and composition ratios between different batches of powder make it difficult to achieve consistently high-quality standards in terms of strength, precision, and surface quality in printed products. Furthermore, manual powder handling is not only inefficient but also prone to introducing impurities and errors, failing to meet the demands of large-scale, high-precision 3D printing production. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a powder conveying and screening system. This system extracts metal powder from two feeding bins by vacuuming a dust collection bin, then conveys it downwards for screening and collection by a straight discharge screen, achieving a one-to-two system with good practicality.

[0004] The objective of this utility model can be achieved through the following technical solution: A powder conveying and screening system, comprising a frame, a powder collection bin, a waste bin, a dust collection bin, and a direct discharge screen. The powder collection bin and the waste bin are installed at the bottom of the frame. The frame has a support platform in the middle for installing the direct discharge screen. The direct discharge screen and the powder collection bin are connected through a first conveying pipe. The direct discharge screen and the waste bin are connected through a second conveying pipe. The dust collection bin is installed at the top of the frame and connected to the direct discharge screen through a third conveying pipe. The dust collection bin is characterized by having a third connecting pipe connected to a powder supply device. The powder supply device includes two powder supply bins. A power supply and ventilation interface is also provided below the frame. The powder supply bin, the powder collection bin, and the waste bin are each provided with a gas protection pipeline connected to the power supply and ventilation interface.

[0005] Furthermore, the third connecting pipe is equipped with a tee connector and is connected to two feeding buckets respectively.

[0006] Furthermore, the direct discharge screen includes a screen cover, a screen base, clamps, and a screen mesh. The screen base and the screen cover are clamped and fixed together by the clamps. The screen mesh is disposed between the screen cover and the screen base. A material discharge port is provided below the screen base and is connected to a material collection bucket. A waste discharge port is provided on one side of the screen base and is connected to a waste bucket through a second conveying pipe.

[0007] Furthermore, the screen has a grid-like distribution of screen holes, and one side of the screen has a large material inlet.

[0008] Furthermore, an ultrasonic device and a vibrating hammer are provided below the screen holder.

[0009] Furthermore, a first pneumatic hammer is connected below the dust collection bin.

[0010] Furthermore, the feeding hopper is equipped with a high level sensor, a low level sensor, an oxygen sensor, and an exhaust solenoid valve, and a second pneumatic hammer is also provided below the feeding hopper.

[0011] Compared with the prior art, the advantages of this application are: it extracts metal powder from two feeding buckets by vacuuming the dust collection bucket, conveys it downwards and collects it through a straight discharge screen, realizing one-to-two operation and having good practicality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a screening system;

[0013] Figure 2 This is a top view of the screening system;

[0014] Figure 3 This is a schematic diagram of the feeding hopper;

[0015] Figure 4 This is a schematic diagram of a sieve;

[0016] In the diagram, 1. Frame; 11. Support platform; 12. Gas protection pipeline; 2. Receiving bin; 21. First conveying pipe; 3. Waste bin; 31. Second conveying pipe; 4. Screen cover; 41. Screen seat; 42. Clamp; 43. Discharge port; 44. Vibrating hammer; 45. Screen; 451. Large feed port; 5. Dust collection bin; 51. First pneumatic hammer; 52. T-joint; 53. Third conveying pipe; 6. Feeding bin; 62. Second pneumatic hammer; 63. Low level sensor; 64. High level sensor; 65. Exhaust solenoid valve; 66. Oxygen sensor; 7. Power and ventilation interface. Detailed Implementation

[0017] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings.

[0018] like Figure 1-4As shown, a powder conveying and screening system includes a frame 1, a powder collection bin 2, a waste bin 3, a dust collection bin 5, and a direct discharge screen. The powder collection bin and the waste bin 3 are installed at the bottom of the frame 1. The frame 1 has a support platform 11 for installing the direct discharge screen in the middle. The direct discharge screen and the powder collection bin 2 are connected by a first conveying pipe 21. The direct discharge screen and the waste bin 3 are connected by a second conveying pipe 31. The dust collection bin 5 is installed at the top of the frame 1 and is connected to the direct discharge screen by a third conveying pipe 53. The dust collection bin 5 is equipped with a third connecting pipe connected to a powder supply device. The powder supply device includes two powder supply bins. A power supply and ventilation interface 7 is also provided below the frame 1. The powder supply bin, the powder collection bin 2, and the waste bin 3 are each equipped with a gas protection pipeline 12 connected to the power supply and ventilation interface 7.

[0019] Furthermore, the third connecting pipe is equipped with a three-way connector 52 and is connected to two feeding buckets 6 respectively.

[0020] Furthermore, the direct discharge screen includes a screen cover 4, a screen base 41, a clamp 42, and a screen 45. The screen base 41 and the screen cover 4 are clamped and fixed together by the clamp 42. The screen 45 is disposed between the screen cover 4 and the screen base 41. The screen base 41 has a discharge port 43 below it, which is connected to the receiving bucket 2. The screen base 41 has a waste outlet on one side, which is connected to the waste bucket 3 through a second conveying pipe 31.

[0021] Furthermore, the screen 45 has mesh-like distributed screen holes, and one side of the screen 45 is a large feed inlet 451.

[0022] Furthermore, an ultrasonic device and a vibrating hammer 44 are provided below the sieve chamber base 41. The ultrasonic device and the vibrating hammer 44 provide sieving power, enabling the metal powder on the screen 45 to be sieved quickly.

[0023] Furthermore, a first pneumatic hammer 51 is connected to the bottom of the dust collection bin 5. The first pneumatic hammer 51 strikes, causing the metal powder inside the dust collection bin 5 to fall rapidly.

[0024] Furthermore, the feeding hopper 6 is equipped with a high-level sensor 64, a low-level sensor 63, an oxygen sensor 66, and an exhaust solenoid valve 65. A second pneumatic hammer 62 is also provided below the feeding passage. The high-level sensor 64 and the low-level sensor 63 are used to detect whether the metal powder in the feeding hopper 6 is sufficient or insufficient. The oxygen sensor 66 is used to detect the oxygen content in the pipeline, which needs to be maintained between 2% and 4%. The exhaust solenoid valve 65 is used for venting. The second pneumatic hammer 62 accelerates the falling of the metal powder in the feeding hopper 6.

[0025] Principle: First, the two external feeding bins 6 are filled with inert gas through the gas protection pipeline 12. Under the vacuum action of the dust collection bin 5, the metal powder is sent into the dust collection bin 5. Then, the powder in the dust collection bin 5 falls downward into the straight discharge screen. After passing through the screen 45 of the straight discharge screen, it is screened by the ultrasonic device and the vibrating hammer 44 and falls into the internal receiving bin 2. The impurity powder falls into the waste bin 3 from the large material outlet 451 on one side.

[0026] The above-described technical solution of this utility model addresses the problem that existing technical solutions are too simplistic and provides a solution that is significantly different from existing technologies. The parts not covered in this application's technical solution are the same as or can be implemented using existing technologies, and will not be described in detail here.

[0027] The technical solutions in the above embodiments have clearly and completely described the content of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A powder conveying and screening system, comprising a frame, a powder collection bin, a waste bin, a dust collection bin, and a direct discharge screen, wherein the powder collection bin and the waste bin are installed at the bottom of the frame, the frame has a support platform in the middle for mounting the direct discharge screen, the direct discharge screen is connected to the powder collection bin via a first conveying pipe, the direct discharge screen is connected to the waste bin via a second conveying pipe, and the dust collection bin is installed at the top of the frame and connected to the direct discharge screen via a third conveying pipe, characterized in that... The dust collection bin is equipped with a third connecting pipe connected to the powder supply device. The powder supply device includes two powder supply bins. A power supply and ventilation interface is also provided below the frame. The powder supply bin, the receiving bin, and the waste bin are each equipped with a gas protection pipeline connected to the power supply and ventilation interface.

2. The powder conveying and sieving system according to claim 1, characterized in that: The third connecting pipe is equipped with a three-way connector and is connected to two feeding buckets respectively.

3. The powder conveying and sieving system according to claim 1, characterized in that: The straight discharge screen includes a screen cover, a screen base, clamps, and a screen mesh. The screen base and the screen cover are clamped and fixed together by the clamps. The screen mesh is disposed between the screen cover and the screen base. A material discharge port is provided below the screen base and is connected to a material receiving bucket. A waste discharge port is provided on one side of the screen base and is connected to a waste bucket through a second conveying pipe.

4. The powder conveying and sieving system according to claim 3, characterized in that: The screen has a grid-like distribution of screen holes, and one side of the screen has a large material inlet.

5. A powder conveying and sieving system according to claim 4, characterized in that, An ultrasonic device and a vibrating hammer are installed below the screen holder.

6. A powder conveying and sieving system according to claim 1, characterized in that, A first pneumatic hammer is connected to the bottom of the dust collection bin.

7. A powder conveying and sieving system according to claim 2, characterized in that, The feeding hopper is equipped with a high level sensor, a low level sensor, an oxygen sensor, and an exhaust solenoid valve. A second pneumatic hammer is also installed below the feeding hopper.

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