Flaky stainless steel powder production device

Abstract

The utility model discloses a flaky stainless steel powder production device which comprises a vertical ball-milling tank, a cyclone separator, a powder collecting tank and a pulse dust collector, grinding balls and a stirring assembly are arranged in the vertical ball-milling tank, the stirring assembly comprises a stirring motor, the stirring motor is arranged at the bottom of the vertical ball-milling tank, and the powder collecting tank is arranged on the cyclone separator. An output shaft of the stirring motor is vertically arranged upwards and is provided with a stirring shaft, the stirring shaft extends into the vertical ball-milling tank and is provided with a horizontally arranged stirring paddle, a top outlet of the vertical ball-milling tank is communicated with an air inlet pipe of a cyclone separator through an airflow pipeline, and a powder collecting tank is arranged at the bottom end of the cyclone separator; a top exhaust port of the cyclone separator is communicated with an air inlet duct of the pulse dust collector through an airflow pipeline, and a top exhaust duct of the pulse dust collector is communicated with an air inlet of a fan through an airflow pipeline. The continuous feeding and discharging device has the advantages of being simple in structure, capable of continuously feeding and discharging, free of water cooling, more energy-saving and the like.

Description

Technical Field

[0001] The utility model relates to the field of flaky stainless steel powder production, in particular to a flaky stainless steel powder production device. Background Art

[0002] At present, the ball milling equipment used to prepare flaky metal powder is generally a drum ball mill, that is, a horizontal ball mill. The horizontal ball mill is limited by its cylindrical surface as the working surface, so it is a one-time feeding. After all the processing of this feeding is completed, the powder is blown out by the airflow, that is, a single feeding, and continuous feeding production is impossible. There is a production cycle break during the addition of each batch of powder. Moreover, the ball milling process is generally carried out in a closed atmosphere, so it is necessary to add a water cooling jacket to the ball mill jar for cooling, and the equipment structure is complex and the cost is high. Furthermore, the horizontal ball mill uses the rotation of the ball mill jar to drive the grinding balls to be thrown under the action of gravity for ball milling. This structure requires more energy, which is not conducive to energy saving. Utility Model Content

[0003] In view of the defects of the prior art, the purpose of the utility model is to provide a flaky stainless steel powder production device which has a simple structure, can achieve continuous feeding and continuous discharging, does not require water cooling, and is more energy-efficient.

[0004] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0005] A flaky stainless steel powder production device comprises a vertical ball mill, a cyclone separator, a powder collecting tank and a pulse dust collector, wherein the vertical ball mill is provided with grinding balls and a stirring assembly, wherein the stirring assembly comprises a stirring motor, wherein the stirring motor is arranged at the bottom of the vertical ball mill, wherein the output shaft of the stirring motor is arranged vertically upward and is provided with a stirring shaft, wherein the stirring shaft extends into the vertical ball mill and is provided with a horizontally arranged stirring paddle, wherein the top air outlet of the vertical ball mill is connected with the air inlet pipe of the cyclone separator through an air flow duct, wherein the bottom end of the cyclone separator is provided with the powder collecting tank, wherein the top exhaust port of the cyclone separator is connected with the air inlet duct of the pulse dust collector through an air flow duct, and the top exhaust duct of the pulse dust collector is connected with the air inlet of a fan through an air flow duct.

[0006] The stirring paddle is provided with multiple layers, and the gap between the free end of the stirring paddle and the inner wall of the vertical ball mill is 1-3 mm.

[0007] A feed inlet is arranged on one side of the bottom of the vertical ball mill.

[0008] The grinding balls include stainless steel balls, ceramic balls and / or hard alloy balls.

[0009] Stearic acid is added into the vertical ball mill to prevent cold welding between powders and between powders and the ball mill / grinding balls.

[0010] It also includes a control unit, and the vertical ball mill, cyclone separator and pulse dust collector are all connected to the control unit for communication.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. The utility model of the flaky stainless steel powder production device, the ball mill is designed as a vertical ball mill, the stirring mechanism is located at the lower part of the ball mill, after the powder is put in, the flaky powder can be ball-milled to the required particle size, and then it can enter the powder collecting tank with the airflow of the cyclone separator, and the powder that does not meet the standard will continue to be ball-milled in the vertical ball mill, so continuous feeding and continuous discharging can be achieved.

[0013] 2. In the flaky stainless steel powder production device of the utility model, powder and air are constantly introduced during the production process, and air cooling can be performed without water cooling, so the equipment structure is simpler, more efficient, safer and less costly.

[0014] 3. In the flaky stainless steel powder production device of the utility model, the ball mill is stationary, and the stirring paddle is driven by the motor, and the stirring paddle drives the grinding balls to move for ball milling. The energy required for the stirring paddle to rotate is selected to be less than the energy required for the ball mill to rotate, so it is more energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Legend:

[0017] 1. Stirring motor; 2. Feed inlet; 3. Ball mill; 4. Grinding balls; 5. Air flow duct; 6. Stirring paddle; 7. Cyclone separator; 8. Powder collecting tank; 9. Pulse dust collector; 10. Fan. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] like Figure 1As shown, an embodiment of a flaky stainless steel powder production device of the utility model comprises a vertical ball mill 3, a cyclone separator 7, a powder collecting tank 8 and a pulse dust collector 9. Grinding balls 4 and a stirring assembly are installed in the vertical ball mill 3. The stirring assembly comprises a stirring motor 1. The stirring motor 1 is arranged at the bottom of the vertical ball mill 3. The output shaft of the stirring motor 1 is arranged vertically upward and is equipped with a stirring shaft. The stirring shaft extends into the vertical ball mill 3 and is equipped with a horizontally arranged stirring paddle 6 on the upper part. The top air outlet of the vertical ball mill 3 is connected to the air inlet pipe of the cyclone separator 7 through the airflow duct 5. The bottom end of the cyclone separator 7 is provided with a powder collecting tank 8. The top exhaust port of the cyclone separator 7 is connected to the air inlet duct of the pulse dust collector 9 through the airflow duct 5. The top exhaust duct of the pulse dust collector 9 is connected to the air inlet of a fan 10 through the airflow duct 5. The utility model of the production device of flaky stainless steel powder has a ball mill designed as a vertical ball milling tank, and the stirring mechanism is located at the bottom of the ball milling tank. After the powder is put in, the flaky powder can enter the powder collecting tank with the airflow of the cyclone separator after the flaky powder reaches the required particle size. If it does not reach the standard, it will continue to be ball milled in the vertical ball milling tank, so continuous feeding and continuous discharging can be achieved. In addition, the powder and air are always introduced during the production process, and can be air-cooled by air without water cooling, so the equipment structure is simpler, efficient, safe, and low-cost.

[0020] In this embodiment, a feed port 2 is provided at one side of the bottom of the vertical ball mill 3. The stirring paddle 6 is provided with multiple layers, and the gap between the free end of the stirring paddle 6 and the inner wall of the vertical ball mill 3 is 1-3 mm. This structure can fully stir the grinder in the vertical ball mill, so that the grinding efficiency is high.

[0021] In this embodiment, the ball mill is stationary, and the motor drives the stirring paddle, which drives the grinding balls to move for ball milling. The energy required for the stirring paddle to rotate is selected to be less than the energy required for the ball mill to rotate, so it is more energy-saving.

[0022] In this embodiment, a control unit is also included, and the vertical ball mill 3, the cyclone separator 7 and the pulse dust collector 9 are all connected to the control unit for communication.

[0023] In this embodiment, the grinding balls 4 include stainless steel balls, ceramic balls and / or hard alloy balls. Stearic acid is added to the vertical ball mill 3. Stearic acid is mainly used for lubrication and prevents cold welding between powders and between powders and the ball mill / grinding balls. It is not limited to stearic acid, but also includes zinc stearate, lithium stearate, etc.

[0024] Working principle:

[0025] The mixed powder of large-sized spherical or irregular stainless steel powder and stearic acid is fed into the vertical ball mill 3 through the feed port 2. The control unit controls the stirring motor 1 to drive the stirring paddle 6 and the grinding ball 4 to rotate at high speed. The powder is extended under the grinding and shearing action of the grinding ball 4 to form flaky powder, and begins to break after reaching the critical size. The particle size becomes finer. After breaking to the specified size, it rises under the action of the airflow, and after the airflow pipe 5 to the cyclone separator 7, the flaky stainless steel powder falls into the powder collecting tank 8 to obtain flaky stainless steel powder. The airflow enters the pulse dust collector 9 through the airflow pipe. The device can be continuously fed and produced, and flaky stainless steel powder of different specifications can be obtained by adjusting the process.

[0026] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A flaky stainless steel powder production device, characterized in that: The invention comprises a vertical ball mill (3), a cyclone separator (7), a powder collecting tank (8) and a pulse dust collector (9). The vertical ball mill (3) is provided with grinding balls (4) and a stirring assembly. The stirring assembly comprises a stirring motor (1). The stirring motor (1) is arranged at the bottom of the vertical ball mill (3). The output shaft of the stirring motor (1) is arranged vertically upward and is provided with a stirring shaft. The stirring shaft extends into the vertical ball mill (3) and is provided with a horizontally arranged stirring paddle (6). The top air outlet of the vertical ball mill (3) is connected to the air inlet pipe of the cyclone separator (7) through an air flow duct (5). The bottom end of the cyclone separator (7) is provided with the powder collecting tank (8). The top exhaust port of the cyclone separator (7) is connected to the air inlet duct of the pulse dust collector (9) through the air flow duct (5). The top exhaust duct of the pulse dust collector (9) is connected to the air inlet of a fan (10) through the air flow duct (5).

2. The device for producing flaky stainless steel powder according to claim 1, characterized in that: The stirring paddle (6) is provided with multiple layers, and the gap between the free end of the stirring paddle (6) and the inner wall of the vertical ball mill (3) is 1-3 mm.

3. The device for producing flaky stainless steel powder according to claim 1, characterized in that: A feed inlet (2) is provided on one side of the bottom of the vertical ball mill (3).

4. The device for producing flaky stainless steel powder according to claim 1, characterized in that: The grinding balls (4) include stainless steel balls, ceramic balls and / or hard alloy balls.

5. The device for producing flaky stainless steel powder according to claim 1, characterized in that: Stearic acid is added into the vertical ball mill (3) to prevent cold welding between powders and between powders and the vertical ball mill (3) / grinding balls (4).

6. The device for producing flaky stainless steel powder according to claim 1, characterized in that: It also includes a control unit, and the vertical ball mill (3), the cyclone separator (7) and the pulse dust collector (9) are all communicatively connected to the control unit.

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