Atomizing barrel

Abstract

This invention discloses an atomizing barrel, comprising a barrel body and baffles. The inner wall of the barrel body slopes downwards and inwards. An inlet is located at the upper end of the barrel body, and an outlet is located at the lower end. One end of the baffle is fixed to the inner wall of the barrel body and slopes downwards towards the interior of the barrel body. The other end of the baffle extends beyond the central axis of the barrel body, leaving a gap between it and the inner wall. Multiple baffles are arranged from top to bottom. In a vertical cross-section, adjacent baffles have opposite inclination directions and are located on opposite inner walls. During the preparation process, if copper powder adheres to the inner wall of the barrel body, it will slide down the sloped inner wall onto the baffles and then onto the next baffle. This causes most of the copper powder to collide with the baffles, resulting in flattening and reducing the sphericity of the copper powder, thus producing copper powder with a low bulk ratio.

Description

Technical Field

[0001] This invention relates to the field of copper powder preparation technology, and in particular to an atomizing barrel. Background Technology

[0002] Copper powder is an important raw material used in the production of powder metallurgy products. The main production methods for copper powder are: electrolysis, water atomization, and oxidation-reduction. Among these, electrolysis has a long history and mature technology, producing copper powder with a dendritic microstructure, high specific surface area, high purity, and good formability. However, electrolytically produced copper powder has low bulk density and lacks fluidity, making it difficult to meet the filling requirements of automated powder metallurgy forming processes and the high density requirements of powder metallurgy parts. It also suffers from serious environmental pollution and high energy consumption, leading to high costs. In copper powder production, atomization is the preferred alternative to electrolysis. Atomization, combined with subsequent processing such as oxidation-reduction, allows for the development of environmentally friendly atomized copper powder. This powder possesses excellent fluidity and allows for adjustment of bulk density during atomization, meeting the current requirements of automated powder metallurgy. Furthermore, atomization is low-cost and less polluting.

[0003] There are two existing atomization methods: water atomization and air atomization. The water atomization method for preparing copper powder requires processes such as metal melting, atomization, and sieving. After the metal is melted, the molten copper enters the atomization tank through a filter and atomizer. In the atomization tank, the molten copper is atomized into fine particles by the sprayed high-pressure atomizing medium and settles in the atomization tank. The copper powder obtained by atomization is released from the discharge port at the bottom of the atomization tank.

[0004] In the process of preparing copper powder by water atomization, the copper powder tends to stick together inside the atomization barrel and cannot directly collide with the barrel wall, which results in the copper powder not being able to fully change its sphericity and produce copper powder with a low bulk ratio that meets the requirements. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes an atomizing barrel that enables copper powder to collide fully and significantly alter its sphericity.

[0006] According to a first aspect of the present invention, an atomizing barrel includes a barrel body and a baffle. The inner wall of the barrel body is inclined downward and inward. An inlet is provided at the upper end of the barrel body, and an outlet is provided at the lower end of the barrel body. One end of the baffle is fixed to the inner wall of the barrel body and is inclined downward toward the interior of the barrel body. The other end of the baffle extends through the central axis of the barrel body and leaves a gap with the inner wall of the barrel body. A plurality of baffles are provided and arranged from top to bottom. In a cross section along the vertical direction, two adjacent baffles have opposite inclination directions and are located on opposite inner walls.

[0007] The atomizing barrel according to the present invention has at least the following beneficial effects: during the preparation process, if copper powder adheres to the inner wall of the barrel, it will slide down the inclined inner wall to the baffle and slide down to the next baffle, so that most of the copper powder can collide with the baffle, flatten it, reduce the sphericity of the copper powder, and thus prepare copper powder with low bulk ratio.

[0008] According to some embodiments of the present invention, the discharge port is equipped with a butterfly valve. The butterfly valve at the discharge port can effectively control the discharge, ensuring the material's time within the container and thus guaranteeing the quality of the collision.

[0009] According to some embodiments of the present invention, the width of the feed inlet increases from top to bottom, and a feed pipe is provided at the top of the feed inlet. After the feed is fed through the feed inlet, the inclined inner wall of the feed inlet can promote the flow of the internal high-pressure atomizing medium, play a guiding role, and promote the full reaction of the copper powder inside.

[0010] According to some embodiments of the invention, the angle of the feed inlet is between 110° and 130°. The expansion angle is adjusted to allow the internal raw materials to react fully.

[0011] According to some embodiments of the present invention, the angle between the baffle and the inner wall of the barrel is between 120° and 150°. Adjusting the angle of the baffle allows it to fully collide with the copper powder, reducing the sphericity of the copper powder and producing high-quality, low-bulk-ratio copper powder.

[0012] According to some embodiments of the present invention, the baffle is fan-shaped, and the top of the baffle is arc-shaped to match the inner wall of the barrel. It fits the inner wall of the cylindrical barrel to fix the baffle in place.

[0013] According to some embodiments of the present invention, the side wall of the barrel is provided with an overflow port, and the overflow port is connected to an overflow pipe. The overflow pipe can effectively control the liquid level, so that the produced copper powder has the characteristics of uniform chemical composition, strong process controllability, and good repeatability of powder performance.

[0014] According to some embodiments of the present invention, a feed pipe is provided at the top of the feed inlet, a solenoid valve is provided in the feed pipe, and a proximity sensor is provided in the overflow pipe. The proximity sensor and the solenoid valve are electrically connected. When liquid flows through the overflow pipe, the proximity sensor is triggered, and the proximity sensor sends a signal to the solenoid valve to block the feed pipe and stop feeding.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a schematic diagram of the atomizing barrel according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the baffle of the atomizing barrel according to an embodiment of the present invention.

[0019] 100. Barrel body; 110. Feed inlet; 111. Feed pipe; 112. Solenoid valve; 120. Discharge outlet; 121. Butterfly valve; 200. Baffle; 300. Overflow pipe; 310. Proximity sensor. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0022] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0024] Reference Figure 1 and Figure 2The atomizing barrel of an embodiment of the present invention includes a barrel body 100 and a baffle 200. The inner wall surface of the barrel body 100 is inclined downward and inward. The upper end of the barrel body 100 is provided with a feed inlet 110 and the lower end of the barrel body 100 is provided with a discharge outlet 120. One end of the baffle 200 is fixed to the inner wall of the barrel body 100 and is inclined downward towards the interior of the barrel body 100. The other end of the baffle 200 extends through the central axis of the barrel body 100 and leaves a gap with the inner wall of the barrel body 100. There are multiple baffles 200 arranged from top to bottom. In the vertical cross-section, two adjacent baffles 200 have different inclination directions and are located on opposite inner walls.

[0025] During the preparation process, molten copper is poured into a barrel 100 and atomized within the barrel 100, thereby solidifying into copper powder. If some of the incompletely solidified copper powder adheres to the inner wall of the barrel 100, it will slide down the inclined inner wall onto the baffle 200 and then slide down to the next baffle 200, causing most of the copper powder to collide with the baffle 200, resulting in flattening and reducing the sphericity of the copper powder, thus preparing copper powder with a low bulk ratio.

[0026] It is understandable that a butterfly valve 121 is provided at the discharge port 120 for convenient control of material discharge. By using the butterfly valve 121 at the discharge port 120, the discharge can be effectively controlled, ensuring the time the material spends within the barrel 100, thereby ensuring the quality of the collision.

[0027] It is understood that the feed inlet 110 increases in width from top to bottom to form an inverted cone shape, and a feed pipe 111 is provided at the top of the feed inlet 110. After feeding into the feed inlet 110, the inclined inner wall of the feed inlet 110 promotes the flow of the internal high-pressure atomizing medium, acts as a guide, and promotes the full reaction between the molten copper metal and the atomizing medium. It is understood that the angle of the feed inlet 110 is between 110° and 130°. The expansion angle is adjusted to ensure that the raw materials inside can react fully.

[0028] It is understood that the angle between the baffle 200 and the inner wall of the barrel 100 is between 120° and 150°. Adjusting the angle of the baffle 200 allows it to fully collide with the copper powder, reducing the sphericity of the copper powder and producing high-quality copper powder with a low bulk ratio.

[0029] It is understood that the barrel 100 is cylindrical and relatively low, and the baffle 200 is fan-shaped, with its top forming an arc that matches the inner wall of the barrel 100. The baffle 200 is fixed to the inner wall of the cylindrical barrel 100. This fixing can be achieved through snap-fitting, screw connection, or other fastening methods.

[0030] It is understood that the side wall of the barrel 100 is provided with an overflow port, which is connected to an overflow pipe 300. The overflow pipe 300 effectively controls the liquid level, ensuring that the produced copper powder has uniform chemical composition, strong process controllability, and good powder performance repeatability. It is also understood that the top of the feed inlet 110 is provided with a feed pipe 111, which is equipped with a solenoid valve 112. The overflow pipe 300 is equipped with a proximity sensor 310, which is electrically connected to the solenoid valve 112. When liquid flows through the overflow pipe 300, the proximity sensor 310 is triggered, sending a signal to the solenoid valve 112 to block the feed pipe 111 and stop feeding.

[0031] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An atomizing barrel, characterized in that, include: The barrel (100) has an inner wall that slopes downward and inward. The upper end of the barrel (100) is provided with a feed inlet (110), and the lower end of the barrel (100) is provided with a discharge outlet (120). A baffle (200) is fixed at one end to the inner wall of the barrel (100) and is inclined downward toward the inside of the barrel (100). The other end of the baffle (200) extends through the central axis of the barrel (100) and leaves a gap with the inner wall of the barrel (100). The baffles (200) are provided in multiple ways and arranged from top to bottom. On the cross section along the vertical direction, the adjacent two baffles (200) have different inclination directions and are located on opposite inner walls. The side wall of the barrel (100) is provided with an overflow port, and the overflow port is connected to an overflow pipe (300); The feed inlet (110) is provided with a feed pipe (111) at the top end, the feed pipe (111) is provided with a solenoid valve (112), the overflow pipe (300) is provided with a proximity sensor (310), and the proximity sensor (310) and the solenoid valve (112) are electrically connected.

2. The atomizing barrel according to claim 1, characterized in that, The discharge port (120) is equipped with a butterfly valve (121).

3. The atomizing barrel according to claim 1, characterized in that, The feed inlet (110) increases in width from top to bottom, and a feed pipe (111) is provided at the top of the feed inlet (110).

4. The atomizing barrel according to claim 3, characterized in that, The angle of the feed inlet (110) is between 110° and 130°.

5. The atomizing barrel according to claim 1, characterized in that, The angle between the baffle (200) and the inner wall of the barrel (100) is between 120° and 150°.

6. The atomizing barrel according to claim 1, characterized in that, The baffle (200) is fan-shaped, and the top of the baffle (200) is an arc shape that matches the inner wall of the barrel (100).

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