Tin powder forming cylinder with multiple forming channels

Abstract

The tin powder forming cylinder comprises a cylinder body, the upper end of the cylinder body is provided with a feeding port, the feeding port is provided with an annular distributor, the distributor is provided with a plurality of feeding channels which are sequentially distributed in the circumferential direction of the distributor, and the upper ends of the feeding channels are used for being communicated with a smelting furnace; the centrifugal rotating disc is arranged in the cylinder and is coaxially distributed with the distributor, the centrifugal rotating disc is provided with a plurality of forming channels, the forming channels are sequentially distributed in the circumferential direction of the centrifugal rotating disc, one end of each forming channel is located below one feeding channel, and the other end of each forming channel extends to the edge of the centrifugal rotating disc along the other end of the centrifugal rotating disc; and the driving device is mounted on the cylinder body, is in transmission connection with the centrifugal turntable, and is used for driving the centrifugal turntable to rotate so that the plurality of forming channels sequentially pass through the plurality of feeding channels. Due to the fact that molten liquid in the smelting furnace is formed after passing through the multiple feeding channels and the forming channels, the tin powder forming cylinder can produce multiple pieces of tin powder at the same time, and productivity can be improved.

Description

Technical Field

[0001] This application relates to the technical field of tin powder forming cylinders with multiple forming channels. Background Art

[0002] The centrifugal atomization method for producing conventional tin powder is widely used in the industry. Its main mechanism is to fill an airtight large container with inert gas, generally controlling the oxygen content within 200 ppm; fix a high-speed rotating disk at the top of a high-speed motor, and the rotation speed of the disk is adjustable; flow (drop) the qualified molten liquid alloy through a pipeline onto the rotating disk. The centrifugal force generated by the rotation of the disk throws out the molten solder. Driven by the surface tension of the metal droplets, they are spheroidized into small droplets and cooled in an inert gas environment to form spherical metal particles, which gather at the bottom of the airtight container, and finally tin powder particles are obtained.

[0003] The matching problem between the rotation speed of the disk and the flow rate of the molten liquid alloy is a key process parameter. When the molten liquid alloy flows (drops) onto the rotating disk, the faster the disk rotates, the greater the centrifugal force, and the faster the molten liquid alloy is thrown out. However, too high a speed will cause the uncured liquid metal mass to hit the container wall and form tin cakes, which limits the production capacity of tin powder. Summary of the Invention

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a tin powder forming cylinder with multiple forming channels, which is beneficial to improving the production capacity of tin powder. The technical solutions adopted include:

[0005] A tin powder forming cylinder with multiple forming channels, characterized by comprising:

[0006] A cylinder body, an inlet is arranged at the upper end of the cylinder body, an annular distributor is arranged at the inlet, and a plurality of feeding channels are arranged on the distributor and are sequentially distributed along the circumference thereof. The upper ends of the plurality of feeding channels are used to communicate with a melting furnace;

[0007] A centrifugal turntable, which is arranged in the cylinder body and coaxially distributed with the distributor. The centrifugal turntable is provided with a plurality of forming channels, and the plurality of forming channels are sequentially distributed along the circumference of the centrifugal turntable. One end of each forming channel is respectively located below a feeding channel, and the other end thereof extends along the other end of the centrifugal turntable to the edge of the centrifugal turntable;

[0008] A driving device, which is installed on the cylinder body and is in transmission connection with the centrifugal turntable. The driving device is used to drive the centrifugal turntable to rotate so that the plurality of forming channels sequentially pass through the plurality of feeding channels.

[0009] One embodiment of the present utility model solves the technical problems thereof by adopting the following technical solution: The driving device is arranged at the lower end of the cylinder body, and the power output end of the driving device extends into the cylinder body and is in transmission connection with the lower end of the centrifugal turntable.

[0010] One embodiment of the present utility model solves the technical problems thereof by adopting the following technical solution: It further includes an air guide pipe and an inert gas supply pipe. The air guide pipe is arranged below the centrifugal turntable and coaxially distributed therewith. Both ends of the air guide pipe are respectively connected to the centrifugal turntable and the inner wall of the cylinder body. Spiral blades are arranged on the outer wall of the air guide pipe. One end of the inert gas supply pipe faces the spiral blades, and the other end thereof passes through the cylinder body and is used for communicating with the gas source of the inert gas.

[0011] One embodiment of the present utility model solves the technical problems thereof by adopting the following technical solution: The bottom surface of the centrifugal turntable is a conical surface.

[0012] Advantages of the present utility model:

[0013] When the centrifugal turntable of the present application rotates, the melting furnace can continuously drip the molten liquid into the plurality of forming channels through the plurality of feeding channels. Since the molten liquid in the melting furnace is formed after passing through the plurality of feeding channels and forming channels, the tin powder forming cylinder can simultaneously produce a plurality of tin powders after being formed through the plurality of feeding channels and forming channels, improving the production efficiency and increasing the production capacity. Description of the Drawings

[0014] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0015] Figure 1 is a schematic structural diagram of the tin powder forming cylinder with a plurality of forming channels according to the present application;

[0016] Figure 2 is a schematic structural diagram of the feeding channel and the forming channel corresponding to one of the feeding channels according to the embodiment of the present application. Detailed Embodiments

[0017] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be construed as a limitation on the protection scope of the present utility model.

[0018] In the description of the present utility model, the meaning of "more than" is more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0019] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0021] Reference Figure 1-2 , an embodiment of the present application is proposed, and the tin powder forming cylinder with multiple forming channels described in this embodiment includes:

[0022] A cylinder 10, wherein a feed port is disposed at the upper end of the cylinder 10, and an annular material distributor 20 is disposed at the feed port. The material distributor 20 is provided with a plurality of material supply channels 30 sequentially distributed along the circumference thereof, and the upper ends of the plurality of material supply channels 30 are used to communicate with the melting furnace;

[0023] A centrifugal turntable 40 is disposed in the cylinder 10 and coaxially distributed with the distributor 20. The centrifugal turntable 40 is provided with a plurality of forming channels 41, and the plurality of forming channels 41 are sequentially distributed along the circumference of the centrifugal turntable 40. One end of each of the forming channels 41 is respectively located below a feed channel 30, and the other end thereof extends along the other end of the centrifugal turntable 40 to the edge of the centrifugal turntable 40.

[0024] The driving device 50 is installed on the cylinder 10 and is in driving connection with the centrifugal turntable 40 . The driving device 50 is used to drive the centrifugal turntable 40 to rotate so that the multiple forming channels 41 pass through the multiple feeding channels 30 in sequence.

[0025] Refer to the attached Figure 1As shown, nozzles are respectively provided at the lower ends of the multiple feeding channels, and the molten metal in the furnace falls to the forming channel 41 of the centrifugal turntable 40 through the multiple feeding channels 30 and the nozzles. Since the driving device 50 drives the centrifugal turntable 40 to rotate, when the rotation speed of the centrifugal turntable 40 reaches a critical speed, the molten metal on the multiple forming channels 41 is thrown out under the action of centrifugation to form tin powder;

[0026] When the centrifugal turntable 40 of the present application rotates, the furnace can continuously drip molten liquid to the multiple molding channels 41 through the multiple feeding channels 30. Since the molten liquid in the furnace is molded after passing through the multiple feeding channels 30 and the molding channels 41, the tin powder molding cylinder with multiple molding channels can produce multiple tin powders at the same time, which is beneficial to improve production capacity.

[0027] The tin powder forming cylinder is also provided with an air inlet, which is connected to an inert gas supply device to prevent the tin powder from being oxidized in the cylinder 10. Those skilled in the art should know that after increasing the speed of the molten droplets being thrown out, the temperature in the cylinder 10 should be guaranteed so that the molten liquid can be quickly cooled to form tin powder, and the cooling speed is too slow to affect the roundness of the product.

[0028] The molding channel 41 described in the present application is an arc-shaped track, which is consistent with the trajectory of the molten droplets being thrown out of the centrifugal turntable 40 under the action of centrifugal force.

[0029] Preferably, the driving device 50 is disposed at the lower end of the cylinder 10 , and a power output end of the driving device 50 extends into the cylinder 10 and is drivingly connected to the lower end of the centrifugal turntable 40 .

[0030] As shown in the drawings, in this embodiment, the driving device 50 is a motor.

[0031] Furthermore, it also includes an air guide pipe 60 and an inert gas supply pipe 70, the air guide pipe 60 is arranged below the centrifugal turntable 40 and coaxially distributed therewith, the two ends of the air guide pipe 60 are respectively connected to the centrifugal turntable 40 and the inner wall of the cylinder 10, and a spiral blade is provided on the outer wall of the air guide pipe 60. One end of the inert gas supply pipe 70 is opposite to the spiral blade, and the other end thereof passes through the cylinder 10 and is used to be connected to the gas source of the inert gas.

[0032] The inert gas flow enters from the inert gas supply pipe 70. The gas flow rises along the spiral blades to the bottom of the centrifugal turntable 40, and then diffuses from the bottom of the centrifugal turntable 40 to the periphery of the cylinder body 10, so that the molten droplets thrown out by the centrifugal turntable 40 descend along with the nitrogen gas flow. The spiral blades 80 and the bottom of the centrifugal turntable 40 play a role in guiding the flow, thereby maintaining the stability of the gas flow in the cylinder body 10, avoiding the disturbance of the inert gas filled into the cylinder body 10 to the tin powder, and being beneficial to improving the roundness of the tin powder after the molten liquid thrown out is cooled; and the molten droplets thrown out by the centrifugal turntable 40 descend stably along with the nitrogen gas flow, avoiding the mutual collision between the molten droplets.

[0033] In the present application, the bottom surface of the centrifugal turntable 40 is a conical surface.

[0034] The gas flow diffuses from the conical surface to the periphery of the cylinder body 10 to generate an upward gas flow around the centrifugal turntable 40. The gas flow acts on the molten droplets, slowing down the falling speed of the molten droplets and also reducing the deformation of the molten droplets under the action of their own weight, which is beneficial to improving the roundness of the tin powder after the molten liquid thrown out is cooled.

[0035] Certainly, the present utility model is not limited to the above embodiments. Those skilled in the art can make equivalent deformations or substitutions without departing from the spirit of the present utility model, and these equivalent deformations and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A tin powder forming cylinder with multiple forming channels, characterized in that, Comprising: A cylinder body (10), an inlet is provided at the upper end of the cylinder body (10), a ring-shaped distributor (20) is provided at the inlet, and a plurality of feeding channels (30) are arranged on the distributor (20) in sequence along its circumference, and the upper ends of the plurality of feeding channels (30) are used to communicate with a melting furnace; A centrifugal turntable (40), which is arranged inside the cylinder body (10) and coaxially distributed with the distributor (20), the centrifugal turntable (40) is provided with a plurality of forming channels (41), and the plurality of forming channels (41) are arranged in sequence along the circumference of the centrifugal turntable (40), and one end of each forming channel (41) is respectively located below a feeding channel (30), and the other end thereof extends to the edge of the centrifugal turntable (40) along the other end of the centrifugal turntable (40); A driving device (50), which is installed on the cylinder body (10) and is in transmission connection with the centrifugal turntable (40), and the driving device (50) is used to drive the centrifugal turntable (40) to rotate so that the plurality of forming channels (41) sequentially pass through the plurality of feeding channels (30).

2. The tin powder forming cylinder with multiple forming channels according to claim 1, characterized in that The driving device (50) is arranged at the lower end of the cylinder body (10), and the power output end of the driving device (50) extends into the cylinder body (10) and is in transmission connection with the lower end of the centrifugal turntable (40).

3. The tin powder forming cylinder with multiple forming channels according to claim 1, characterized in that, It further includes a gas guide pipe (60) and an inert gas supply pipe (70), the gas guide pipe (60) is arranged below the centrifugal turntable (40) and is coaxially distributed with it, both ends of the gas guide pipe (60) are respectively connected to the centrifugal turntable (40) and the inner wall of the cylinder body (10), a spiral blade (80) is provided on the outer wall of the gas guide pipe (60), and one end of the inert gas supply pipe (70) faces the spiral blade, and the other end thereof passes through the cylinder body (10) and is used to communicate with the gas source of the inert gas.

4. The tin powder forming cylinder with multiple forming channels according to claim 3, characterized in that, The bottom surface of the centrifugal turntable (40) is a conical surface.

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