A powder air flow mixing device

Abstract

The utility model discloses an air flow mixing device for powder, comprising a barrel body, wherein the lower part of the barrel body is conical, a barrel cover of the barrel body is connected with a ventilation pipe, the ventilation pipe is connected with a filter, and the filter is connected with an air inlet and outlet pipeline; the air inlet and outlet pipelines are connected with an air source, the air source is connected with a shunt pipe, the shunt pipe is connected with at least one blowing pipe, the blowing pipe is connected with the conical part of the lower part of the barrel body, an angle is formed between the blowing pipe and the barrel body, the air inlet and outlet pipelines comprise a first air pipe, a first valve, a second air pipe and a third air pipe, the first air pipe is connected with the filter through a flange, the first air pipe is connected with an interface of the first valve, and an interface of the first valve is connected with the second air pipe. In the utility model, the air flow blows material from the blowing pipe from bottom to top, the powder is blown away by the air flow, and the mixing of the powder is realized. The air flow mixing method is adopted, the time is short, the mixing efficiency is relatively high, and the mixing is uniform, and impurities are not easily introduced.

Description

Technical Field

[0001] The utility model relates to the technical field of material mixing, in particular to an air flow mixing device for powders. Background Art

[0002] The mixing of raw powders is the first and most critical step in powder metallurgy. Existing powder mixing devices are usually mechanical mixing, which is easy to generate high temperatures, which can easily cause metal powder oxidation, and impurity elements can be easily introduced due to friction during the mechanical mixing process. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a powder airflow mixing device, comprising a barrel, the lower part of which is conical, a barrel cover of which is connected with a ventilation pipe, the ventilation pipe is connected with a filter, and the filter is connected with an air inlet and outlet pipeline;

[0004] The air inlet and outlet pipelines are connected to an air source, the air source is connected to a shunt pipe, the shunt pipe is connected to at least one blowing pipe, the blowing pipe is connected to the conical part of the lower part of the barrel body, and an angle is formed between the blowing pipe and the barrel body.

[0005] Preferably: the air inlet and outlet pipelines include a first air pipe, a first valve, a second air pipe and a third air pipe, the first air pipe is connected to the filter through a flange, the first air pipe is connected to an interface of the first valve, and an interface of the first valve is connected to the second air pipe.

[0006] Preferably, another interface of the first valve is connected to a third air pipe, and the third air pipe is connected to an outlet of the second valve.

[0007] Preferably, the angle between the blowing pipe and the barrel body is 30°-60°.

[0008] Preferably, the air inlet and outlet pipelines are also connected to an outlet of the second valve, the inlet of the second valve is connected to the main air inlet pipe, and the main air inlet pipe is connected to the air source through a flange.

[0009] Preferably, the other outlet of the second valve is connected to a shunt pipe.

[0010] Preferably, the barrel cover of the barrel body is also connected with a ventilation pipe, and the ventilation pipe is connected to the filter through a flange.

[0011] Preferably, a barrel cover is arranged at the top of the barrel body, a feed pipe is arranged on the barrel cover, and a first cut-off valve is arranged on the feed pipe.

[0012] Preferably, the outlet at the bottom end of the barrel is connected to a discharge pipe, and a second cut-off valve is provided on the discharge pipe.

[0013] Preferably, the first valve and the second valve are both three-way valves.

[0014] Technical effects and advantages of the utility model: In the utility model, air flow blows material from the blowing pipe from bottom to top, and the powder is blown away by the air flow to achieve powder mixing. The air flow mixing method is adopted, which takes a short time and has a relatively high mixing efficiency. At the same time, the mixing is uniform and it is not easy to introduce impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the airflow mixing device for powder provided in the embodiment of the present application.

[0016] In the figure: 1. barrel; 2. feed pipe; 21. first shut-off valve; 3. discharge pipe; 31. second shut-off valve; 4. ventilation pipe; 5. inlet and outlet air pipelines; 51. first air pipe; 52. first valve; 53. second air pipe; 54. third air pipe; 6. filter; 7. second valve; 8. main air inlet pipe; 9. diverter pipe; 10. blowing pipe; 11. one-way valve. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0018] See also Figure 1 As shown, in this embodiment, an air flow mixing device for powder is provided, including a barrel body 1, the lower part of the barrel body 1 is conical, a barrel cover is arranged at the top of the barrel body 1, a feed pipe 2 is arranged on the barrel cover, a first cut-off valve 21 is arranged on the feed pipe 2, an outlet at the bottom end of the barrel body 1 is connected to a discharge pipe 3, a second cut-off valve 31 is arranged on the discharge pipe 3, when the first cut-off valve 21 is opened, powder enters the barrel body 1 from the feed pipe 2 for mixing, and after mixing, the second cut-off valve 31 is opened to discharge the powder.

[0019] Furthermore, a ventilation pipe 4 is connected to the barrel cover of the barrel body 1, and the ventilation pipe 4 is connected to the filter 6 through a flange. The filter 6 is connected to the air inlet and outlet pipes 5 through a flange. The air inlet and outlet pipes 5 are also connected to an outlet of the second valve 7. The inlet of the second valve 7 is connected to the main air inlet pipe 8, and the main air inlet pipe 8 is connected to the air source through a flange.

[0020] Furthermore, the other outlet of the second valve 7 is connected to the diverter pipe 9, the diverter pipe 9 is connected to at least one blowing pipe 10, the blowing pipe 10 is connected to the lower part of the barrel body 1, there is an angle between the blowing pipe 10 and the barrel body 1, and the angle between the blowing pipe 10 and the barrel body 1 is 30°-60°, the airflow blows the material from the blowing pipe 10 from bottom to top, and the powder is blown away by the airflow to achieve powder mixing.

[0021] Furthermore, each blowing pipe 10 is provided with a one-way valve 11 to prevent powder from entering the diversion pipe 9 from the blowing pipe 10 .

[0022] It can be understood that the barrel 1 structure of the present application is particularly suitable for the mixed processing of aluminum powder or metal powder. The gas source is an inert gas such as nitrogen or argon, which can prevent the metal powder from being oxidized by high temperature during mixing.

[0023] In this embodiment, the air inlet and outlet pipelines 5 include a first air pipe 51, a first valve 52, a second air pipe 53 and a third air pipe 54. The first air pipe 51 is connected to the filter 6 through a flange. The first air pipe 51 is connected to an interface of the first valve 52. An interface of the first valve 52 is connected to the second air pipe 53. Another interface of the first valve 52 is connected to the third air pipe 54. The third air pipe 54 is connected to the outlet of the second valve 7.

[0024] In this embodiment, the first valve 52 and the second valve 7 are both three-way valves, through which the direction of the airflow can be changed.

[0025] In this embodiment, the filter 6 is a filter in the form of a sintered filter element, which can prevent the powder in the barrel body 1 from being lost through the ventilation pipe 4.

[0026] In one embodiment, a plurality of blowing pipes 10 are provided, and the connection between the plurality of blowing pipes 10 and the barrel body 1 is arranged in a spiral shape. The gas enters the barrel body 1 from the blowing pipes 10 in a spiral wind, so that the powder is mixed more evenly.

[0027] The working principle of the utility model is:

[0028] When in use, the first shut-off valve 21 is opened, and the powder enters the barrel body 1 from the feeding pipe 2. After the feeding is completed, the first shut-off valve 21 is closed, the valve of the gas source is opened, and the second valve 7 is adjusted so that the gas source is connected with the shunt pipe 9 and the blowing pipe 10. The first valve 52 is adjusted so that the gas passes through the second valve 7 and enters the barrel body 1 from the shunt pipe 9 and the blowing pipe 10. The airflow is from bottom to top, and the powder is blown away by the airflow to achieve powder mixing. The excess gas is filtered by the filter 6 through the ventilation pipe 4 and discharged from the first air pipe 51 and the second air pipe 53. After the powder mixing is completed, the second shut-off valve 31 is opened to discharge the powder from the barrel body 1.

[0029] When the filter 6 needs to be cleaned, open the second shut-off valve 31, adjust the first valve 52 to connect the first air pipe 51 with the third air pipe 54, adjust the second valve 7 to connect the main air intake pipe 8 with the third air pipe 54, and the gas enters the third air pipe 54 from the main air intake pipe 8 through the second valve 7, and enters the first air pipe 51, the filter 6 and the ventilation pipe 4 through the first valve 52, and enters the barrel body 1, and the filter 6 is back-blown to remove the powder accumulated on the filter 6 to avoid clogging of the filter 6.

[0030] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A powder air flow mixing device, comprising a barrel (1), characterized in that: The lower part of the barrel body (1) is conical, the barrel cover of the barrel body (1) is connected to a ventilation pipe (4), the ventilation pipe (4) is connected to a filter (6), and the filter (6) is connected to an air inlet and outlet pipeline (5); The air inlet and outlet pipes (5) are connected to an air source, the air source is connected to a shunt pipe (9), the shunt pipe (9) is connected to at least one blowing pipe (10), the blowing pipe (10) is connected to a conical portion of the lower part of the barrel body (1), and an angle is formed between the blowing pipe (10) and the barrel body (1).

2. A powder air flow mixing device according to claim 1, characterized in that: The air inlet and outlet pipeline (5) comprises a first air pipe (51), a first valve (52), a second air pipe (53) and a third air pipe (54); the first air pipe (51) is connected to the filter (6) via a flange; the first air pipe (51) is connected to an interface of the first valve (52); and an interface of the first valve (52) is connected to the second air pipe (53).

3. A powder air flow mixing device according to claim 2, characterized in that: Another interface of the first valve (52) is connected to a third air pipe (54), and the third air pipe (54) is connected to an outlet of the second valve (7).

4. A powder air flow mixing device according to claim 1, characterized in that: The included angle between the blowing pipe (10) and the barrel body (1) is 30°-60°.

5. A powder air flow mixing device according to claim 3, characterized in that: The air inlet and outlet pipeline (5) is also connected to an outlet of the second valve (7), the inlet of the second valve (7) is connected to the main air inlet pipe (8), and the main air inlet pipe (8) is connected to the air source via a flange.

6. A powder air flow mixing device according to claim 5, characterized in that: The other outlet of the second valve (7) is connected to the diverter pipe (9).

7. A powder air flow mixing device according to claim 1, characterized in that: The barrel cover of the barrel body (1) is also connected to a ventilation pipe (4), and the ventilation pipe (4) is connected to a filter (6) via a flange.

8. The powder air flow mixing device according to claim 1, characterized in that: The top of the barrel body (1) is provided with a barrel cover, a feed pipe (2) is provided on the barrel cover, and a first shut-off valve (21) is provided on the feed pipe (2).

9. The powder air flow mixing device according to claim 1, characterized in that: The outlet at the bottom end of the barrel body (1) is connected to a discharge pipe (3), and a second shut-off valve (31) is provided on the discharge pipe (3).

10. The powder air flow mixing device according to claim 6, characterized in that: The first valve (52) and the second valve (7) are both three-way valves.

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