Nitrogen atomization powdering device for high-purity aluminum powder production

Abstract

The utility model provides a nitrogen atomization pulverization device for high purity aluminum powder production, which comprises a molten aluminum storage tank, a cooling mechanism and an atomization mechanism communicated with the molten aluminum storage tank and the cooling mechanism, the cooling mechanism comprises a cylindrical cooling cavity, the top of the cooling cavity is provided with an installation port, the atomization mechanism is installed in the installation port, the molten aluminum storage tank is located at the top of the cooling cavity, and the atomization mechanism is installed in the installation port. A liquid inlet of the atomization mechanism is connected with a liquid outlet of the molten aluminum storage tank, a spray nozzle of the atomization mechanism is located in the upper side of the interior of the cooling cavity, a discharging opening is formed in the bottom of the cooling cavity, the outer wall of the cooling cavity is a cylindrical shell, an air inlet pipe is arranged on the outer side of the cylindrical shell, the outer end of the air inlet pipe communicates with cooling gas, and the inner end of the air inlet pipe communicates with the interior of the cooling cavity; a cooling interlayer is arranged in the cylindrical shell, cooling liquid is arranged in the cooling interlayer, and a cooling liquid inlet and a cooling liquid outlet are formed in the outer side of the cylindrical shell. The nitrogen atomization powder making device for high-purity aluminum powder production has the advantages of being simple in structure, reasonable in design and good in cooling effect.

Description

Technical Field

[0001] The utility model relates to aluminum powder production equipment, in particular to a nitrogen atomization powder making device for producing high-purity aluminum powder. Background Art

[0002] In the production process of aluminum powder, it is often necessary to melt the aluminum ingot first, and the molten aluminum enters the atomization equipment for atomization, and then cools into particles, and finally classifies to obtain aluminum powder products of different particle sizes. There are many aluminum powder atomization powder making equipment on the market. For example, Chinese patent CN218638571U discloses a nitrogen atomization powder making device for the production of high-purity aluminum powder, which is cooled once by air and cooled twice by setting a coolant in the guide plate, thereby improving the cooling efficiency by cooling twice. Chinese patent CN215279881U adopts air cooling and coolant in combination, and the coolant is located in the guide plate. After a period of use, the temperature of the coolant rises and the cooling effect is easily lost. The process of replacing the coolant is relatively cumbersome.

[0003] In order to solve the above problems, people have been seeking an ideal technical solution. Utility Model Content

[0004] The utility model aims to provide a nitrogen atomization powder making device for producing high-purity aluminum powder in view of the deficiencies in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A nitrogen atomization powder making device for producing high-purity aluminum powder comprises an aluminum liquid storage tank, a cooling mechanism and an atomizing mechanism connecting the aluminum liquid storage tank and the cooling mechanism, the cooling mechanism comprises a cylindrical cooling cavity, a mounting port is arranged at the top of the cooling cavity, the atomizing mechanism is installed in the mounting port, the aluminum liquid storage tank is located at the top of the cooling cavity, the liquid inlet of the atomizing mechanism is connected to the liquid outlet of the aluminum liquid storage tank, the spray port of the atomizing mechanism is located at the upper side of the interior of the cooling cavity, a feeding port is arranged at the bottom of the cooling cavity, the outer wall of the cooling cavity is a cylindrical shell, an air inlet pipe is arranged outside the cylindrical shell, the outer end of the air inlet pipe is connected to the cooling gas, and the inner end of the air inlet pipe is connected to the interior of the cooling cavity; a cooling interlayer is arranged inside the cylindrical shell, a cooling liquid is arranged in the cooling interlayer, and a cooling liquid inlet and a cooling liquid outlet are arranged outside the cylindrical shell.

[0007] The air intake pipe is located on the upper side of the cylindrical shell, and the cooling sandwich is located below the air intake pipe.

[0008] A plurality of symmetrical air inlet pipes are arranged on the cylindrical shell. The outer ends of the air inlet pipes are connected to the main pipe through branch pipes. The main pipe is located at the top of the cylindrical shell.

[0009] The main pipeline is an annular pipeline, and a plurality of interfaces are arranged on the annular pipeline, one of which is connected to the cooling air source, and the other interfaces are connected to the branch pipes accordingly.

[0010] The cooling interlayer includes an inner partition and an outer partition. The outer partition is a cylindrical shell or close to a cylindrical shell, and the inner partition is close to the center of the cooling chamber. The cooling interlayer includes several sections of conical cylinders connected end to end, among which the lower end of the conical cylinder located at the top shrinks toward the center; the lower end of the conical cylinder located at the bottom opens toward the inner wall of the cooling chamber.

[0011] A sieve plate is arranged below the cooling interlayer, and the horizontal projection of the sieve hole area of ​​the sieve plate is larger than the cooling interlayer. The sieve plate is arranged at an inclination, and the feed discharge port is located below the sieve plate. A discharge port is arranged on the side of the cylindrical shell, and an opening and closing door is installed at the discharge port. The discharge port is located above the sieve plate.

[0012] Compared with the prior art, the utility model has the beneficial effect that the utility model provides a nitrogen atomization powder making device for producing high-purity aluminum powder. During use, aluminum liquid enters the atomization mechanism from the liquid inlet, and is cooled by cooling gas after atomization. A cooling interlayer is arranged below the air inlet pipe of the cooling gas, and the inner cavity of the cooling interlayer is respectively connected to the cooling liquid inlet and the cooling liquid outlet, and the cooling temperature of the cooling interlayer is ensured by continuously introducing cooling liquid; a sieve plate is arranged below the cooling interlayer, and the aluminum powder cooled by the cooling gas and the cooling interlayer is screened through the sieve plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a structural schematic diagram of the cooling interlayer in the utility model.

[0015] In the figure: 1. Coolant inlet; 2. Coolant outlet; 3. Cylindrical shell; 4. Main pipeline; 5. Liquid inlet; 6. Cooling interlayer; 7. Discharge port; 8. Support foot; 9. Conical cylinder. DETAILED DESCRIPTION

[0016] The technical solution of the utility model is further described in detail below through specific implementation methods.

[0017] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. "Installed", "provided with", "connected", etc. can adopt conventional means in the prior art, such as: integral setting, snap-on installation, welding connection, adhesive connection, bolt connection, etc. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances, and suitable connection, setting or installation methods can be selected in the prior art.

[0018] like Figure 1-2 As shown, a nitrogen atomization powder making device for producing high-purity aluminum powder includes an aluminum liquid storage tank (not shown), a cooling mechanism and an atomizing mechanism connecting the aluminum liquid storage tank and the cooling mechanism. Specifically, the atomizing mechanism can adopt an atomizer commonly used in the prior art. The cooling mechanism includes a cylindrical cooling chamber. A mounting port is arranged at the top of the cooling chamber, and the atomizing mechanism is installed in the mounting port. The aluminum liquid storage tank is located at the top of the cooling chamber. The liquid inlet 5 of the atomizing mechanism is connected to the liquid outlet of the aluminum liquid storage tank. The spray port of the atomizing mechanism is located on the upper side of the interior of the cooling chamber. A feeding port is arranged at the bottom of the cooling chamber. The outer wall of the cooling chamber is a cylindrical shell 3. An air inlet pipe 4 is arranged on the outer side of the cylindrical shell 3. The outer end of the air inlet pipe 4 is connected to the cooling gas, and the inner end of the air inlet pipe 4 is connected to the interior of the cooling chamber. A cooling interlayer 5 is arranged inside the cylindrical shell 3, and a cooling liquid is arranged in the cooling interlayer 5. A cooling liquid inlet 1 and a cooling liquid outlet 2 are arranged on the outer side of the cylindrical shell 3. Specifically, the coolant can be a conventional commercially available coolant. The overall profile of the cylindrical shell is quasi-cylindrical, and can be designed as a multi-section structure as needed. For easy installation, a pipe section with a smaller outer diameter is provided at the upper end of the cylindrical shell, and the atomizing mechanism is installed inside the section. In addition, a dust collector can be installed as needed. Specifically, a cyclone dust collector can be used to connect the exhaust port at the bottom of the device.

[0019] Preferably, a plurality of supporting legs 8 are connected to the lower side of the outer wall of the cylindrical housing 3 to support the device.

[0020] In one embodiment, the air inlet pipe is located on the upper side of the cylindrical shell 3, corresponding to the spray port of the spray mechanism, and the cooling interlayer 5 is located below the air inlet pipe.

[0021] In one embodiment, a plurality of symmetrical air inlet pipes are arranged on the cylindrical shell 3 , specifically, four, six or eight groups, etc. The outer end of each air inlet pipe is connected to the main pipe 4 through a branch pipe, and the main pipe is located at the top of the cylindrical shell 3 .

[0022] In one embodiment, the main pipeline is an annular pipeline, and a plurality of interfaces are arranged on the annular pipeline, one of which is connected to the cooling air source, and the other interfaces are connected to the branch pipes accordingly. Preferably, a plurality of support frames are evenly arranged on the annular pipeline, and the lower ends of the support frames are fixedly connected to the cylindrical shell to improve the stability of the annular pipeline.

[0023] In one embodiment, the cooling interlayer 5 includes an inner partition and an outer partition, the outer partition is a cylindrical shell 3 or is close to the cylindrical shell 3, and the inner partition is close to the center of the cooling chamber. The cooling interlayer 5 includes a plurality of sections of conical cylinders 9 connected end to end, wherein the conical cylinder 9 located at the top has its lower end contracted toward the center to facilitate the gathering of materials toward the center, and the cooling surface is an inclined surface to improve the cooling efficiency; the conical cylinder 9 located at the bottom has its lower end opened toward the inner wall of the cooling chamber. Preferably, the height of the conical cylinder opened at the lower end is less than the height of the conical cylinder contracted at the lower end. Preferably, a cooling coil can be provided in the cooling interlayer to improve the cooling efficiency; connecting pipes are provided on the side of the cooling interlayer corresponding to the coolant inlet 1 and the coolant outlet 2 to facilitate connection.

[0024] In one of the embodiments, a sieve plate is arranged below the cooling interlayer 5, and the horizontal projection of the sieve hole area of ​​the sieve plate is larger than the cooling interlayer 5. The sieve plate is arranged obliquely, and the feed port is located below the sieve plate. A discharge port 7 is arranged on the side of the cylindrical shell 3, and an opening and closing door is installed at the discharge port 7. Specifically, the opening and closing door adopts a conventional door component, one side of the door is hinged to one side of the discharge port, and the other side is connected by a common door lock component to open or lock the door. The discharge port 7 is located above the sieve plate, preferably, it is located close to the side of the sieve plate with a lower inclination, so that after a period of use, the opening and closing door is opened, and the material on the sieve plate flows out from the discharge port.

[0025] During the specific use of the equipment, aluminum liquid enters the atomizing mechanism from the liquid inlet, and is cooled by cooling gas after atomization. A cooling interlayer is arranged below the air inlet pipe of the cooling gas, and the inner cavity of the cooling interlayer is respectively connected to the cooling liquid inlet and the cooling liquid outlet, and the cooling temperature of the cooling interlayer is ensured by continuously introducing the cooling liquid; a sieve plate is arranged below the cooling interlayer, and the aluminum powder cooled by the cooling gas and the cooling interlayer is screened through the sieve plate.

[0026] The above embodiments can be combined with each other.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A nitrogen atomization powder making device for producing high-purity aluminum powder, comprising an aluminum liquid storage tank, a cooling mechanism and an atomizing mechanism connecting the aluminum liquid storage tank and the cooling mechanism, the cooling mechanism comprising a cylindrical cooling chamber, a mounting port is arranged at the top of the cooling chamber, the atomizing mechanism is installed in the mounting port, the aluminum liquid storage tank is located at the top of the cooling chamber, the liquid inlet of the atomizing mechanism is connected to the liquid outlet of the aluminum liquid storage tank, the spray port of the atomizing mechanism is located at the upper inner side of the cooling chamber, and a feeding port is arranged at the bottom of the cooling chamber, characterized in that: The outer wall of the cooling chamber is a cylindrical shell, and an air intake pipe is arranged on the outside of the cylindrical shell. The outer end of the air intake pipe is connected to the cooling gas, and the inner end of the air intake pipe is connected to the interior of the cooling chamber; a cooling interlayer is arranged inside the cylindrical shell, and a coolant is arranged in the cooling interlayer, and a coolant inlet and a coolant outlet are arranged on the outside of the cylindrical shell.

2. The nitrogen atomization powder making device for producing high purity aluminum powder according to claim 1, characterized in that: The air intake pipe is located on the upper side of the cylindrical shell, and the cooling sandwich is located below the air intake pipe.

3. The nitrogen atomization powder making device for producing high-purity aluminum powder according to claim 2 is characterized in that: A plurality of symmetrical air inlet pipes are arranged on the cylindrical shell. The outer ends of the air inlet pipes are connected to the main pipe through branch pipes. The main pipe is located at the top of the cylindrical shell.

4. The nitrogen atomization powder making device for producing high purity aluminum powder according to claim 3 is characterized in that: The main pipeline is an annular pipeline, and a plurality of interfaces are arranged on the annular pipeline, one of which is connected to the cooling air source, and the other interfaces are connected to the branch pipes accordingly.

5. The nitrogen atomization powder making device for producing high purity aluminum powder according to claim 4, characterized in that: The cooling interlayer includes an inner partition and an outer partition. The outer partition is a cylindrical shell or close to a cylindrical shell, and the inner partition is close to the center of the cooling chamber. The cooling interlayer includes several sections of conical cylinders connected end to end, among which the lower end of the conical cylinder located at the top shrinks toward the center; the lower end of the conical cylinder located at the bottom opens toward the inner wall of the cooling chamber.

6. The nitrogen atomization powder making device for producing high purity aluminum powder according to claim 5, characterized in that: A sieve plate is arranged below the cooling interlayer, and the horizontal projection of the sieve hole area of ​​the sieve plate is larger than the cooling interlayer. The sieve plate is arranged at an inclination, and the feed discharge port is located below the sieve plate. A discharge port is arranged on the side of the cylindrical shell, and an opening and closing door is installed at the discharge port. The discharge port is located above the sieve plate.

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