Vacuum gas atomization device for metal powder production

Abstract

The utility model discloses a vacuum gas atomization device for metal powder production, which belongs to the field of metal powder production and comprises an inner frame, a crucible is arranged inside the inner frame, an outer frame is arranged outside the bottom end of the inner frame, a fitting plate is arranged at the top end of the outer frame, a connecting disc is arranged at the top end of the inner frame, and a vacuum gas atomization device is arranged at the bottom end of the connecting disc. The top of the attaching plate is connected with the connecting disc in a clamped mode, a bottom pad is arranged at the bottom of an inner cavity of the outer frame, and the bottom of the inner frame is connected with the interior of the top end of the bottom pad. A traditional bolt connection mode is replaced with a clamping connection mode of the attaching plate and the connecting disc, no extra tool is needed for disassembly and assembly, the operation process is greatly simplified, the working efficiency is improved, the clamping connection structure between the attaching plate and the connecting disc can effectively prevent looseness or damage caused by frequent disassembly and assembly, and the service life of the attaching plate is prolonged. Therefore, the stability and the sealing performance of the outer sheath of the crucible are ensured, and the smooth proceeding of the vacuum gas atomization powder preparation process is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to metal powder production technical field, concretely relates to a vacuum air atomization device for metal powder production. BACKGROUND

[0002] In the process of vacuum air atomization metal powder production, a larger size of the outer layer of the crucible is usually sleeved with another crucible, and the space between the large crucible and the small crucible is filled with magnesia or corundum sand; the outer layer of the crucible is repeatedly subjected to high temperature during the powder production process, and the inner surface of the outer layer of the crucible is prone to peeling, cracking and other phenomena, so the outer layer of the crucible needs to be replaced frequently, increasing the cost of powder production.

[0003] For example, the announcement number CN 213288676 U is a kind of outer sheath for vacuum air atomization powder production. The metal frame of the crucible outer sheath is formed by vertical bar and gap ring butt welding, and two or more gap rings are arranged along the vertical coaxial line up and down, and two or more vertical bars are evenly arranged along the outer side of the gap ring;Upper flange one and upper flange two are arranged oppositely, and the upper bent end of the vertical bar is clamped between the upper flange one and the upper flange two;Lower flange one and lower flange two are arranged oppositely, and the lower bent end of the vertical bar is clamped between the lower flange one and the lower flange two. The utility model uses the combination mode of crucible outer sheath and crucible to replace the smelting mode of outer layer large crucible sleeve small crucible in traditional vacuum air atomization powder production, and the crucible basket can be repeatedly used, which avoids the short service life of the outer layer of the crucible, greatly improves the production efficiency and equipment utilization rate of vacuum air atomization powder production, and reduces the use cost.

[0004] The above-mentioned case in actual use process, although through the combination mode of crucible outer sheath and crucible replaces the smelting mode of outer layer large crucible sleeve small crucible in traditional vacuum air atomization powder production, avoids the short service life of the outer layer of the crucible, but the connecting structure of the crucible outer sheath adopts bolt, and the bolt connection needs additional tool to disassemble, which not only increases the complexity of operation, but also causes bolt loosening or damage due to frequent disassembly, and further affects the stability and sealing property of the crucible outer sheath, secondly, the bolt connection part is often the place where stress is concentrated, and these parts are prone to thermal stress fatigue under long-term high-temperature environment, leading to connection failure, shortening the overall service life of the crucible outer sheath, therefore, the utility model provides a vacuum air atomization device for metal powder production. UTILITY MODEL CONTENTS

[0005] The utility model is aimed at providing a vacuum air atomization device for metal powder production to solve the problems raised in the above background.

[0006] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: A vacuum air atomization device for metal powder production, including inner frame, the inside of inner frame is equipped with crucible, the outside of inner frame bottom is equipped with outer frame, the top of outer frame is equipped with the board that fits, the top of inner frame is equipped with the connecting disc, the board that fits of top is connected with the connecting disc, the bottom of outer frame inner chamber is equipped with bottom pad, the bottom of inner frame is connected with the inside of bottom pad top, the bottom of inner frame, outer frame and crucible all are equipped with through -hole.

[0007] As a preferred implementation, the bottom of the inner frame is provided with a connecting sleeve, a cavity is formed in the inner wall of the connecting sleeve, and the cavity is filled with quartz sand.

[0008] As a preferred implementation, the top of the inner frame is fixedly connected with two symmetrical pull rings, and a connecting assembly is arranged between the connecting disc and the board that fits.

[0009] As a preferred implementation, the bottom of the outer frame is provided with a connecting frame, and the connecting frame is sleeved outside the connecting sleeve.

[0010] As a preferred implementation, the connecting assembly includes a connecting piece fixedly connected to the bottom of the outer circle of the connecting disc, a limiting sleeve is arranged at the joint of the board that fits and the connecting piece, and a limiting cavity matched with the connecting piece is formed in the limiting sleeve.

[0011] As a preferred implementation, each connecting piece includes a center column fixedly connected to the connecting disc, a plurality of limiting pieces are annularly and equidistantly arranged outside the center column, and the limiting pieces are fixedly connected to the connecting disc.

[0012] As a preferred implementation, the surface of each limiting piece is provided with a plurality of limiting protrusions, and a reset spring piece is fixedly connected between each limiting piece and the center column.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The vacuum air atomization device for metal powder production adopts the clamping mode of the board that fits and the connecting disc, replaces the traditional bolt connection mode, does not need additional tools for disassembly, greatly simplifies the operation process, and improves the work efficiency.

[0015] The clamping structure between the board that fits and the connecting disc can effectively prevent loosening or damage caused by frequent disassembly, thereby ensuring the stability and sealing performance of the crucible outer sheath (combination of the outer frame and the inner frame), and ensuring the smooth progress of the vacuum air atomization powder production process.

[0016] The vacuum air atomization device for metal powder production avoids the connection failure caused by thermal stress fatigue of bolt connection parts, prolongs the overall service life of the crucible outer sheath, and reduces the replacement and maintenance costs.

[0017] The vacuum air atomization device for metal powder production can effectively improve the high-temperature resistance of the inner frame by opening a cavity in the inner wall of the connecting sleeve and filling the cavity with quartz sand, further protects the crucible from the high-temperature environment, and the filling of the quartz sand also has a certain damping effect, improving the stability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view of the structure of the utility model;

[0019] Figure 2 It is a cooperation schematic view of the structure of the utility model;

[0020] Figure 3 It is Figure 2 the enlarged schematic view of A.

[0021] In the figure: 1, inner frame; 101, connecting sleeve; 102, pull ring; 103, limiting sheet; 1031, limiting protrusion; 104, center column; 105, reset spring; 2, outer frame; 201, connecting frame; 202, bonding plate; 203, limiting sleeve; 204, bottom pad; 205, limiting cavity; 206, through hole; 3, crucible. DETAILED DESCRIPTION

[0022] The utility model will be further described below in combination with examples.

[0023] The following examples are used to illustrate the utility model, but cannot be used to limit the protection scope of the utility model. The conditions in the examples can be further adjusted according to specific conditions, and simple improvements of the method of the utility model under the concept of the utility model belong to the range required to be protected by the utility model.

[0024] Please refer to Figures 1-3The utility model provides a vacuum air atomization device for metal powder production, including inner frame 1, the inside of inner frame 1 is equipped with crucible 3, the outside of inner frame 1 bottom is equipped with outer frame 2, the bottom of inner frame 1 is equipped with connecting sleeve 101, the inner wall of connecting sleeve 101 is equipped with cavity, the inside of cavity is filled with quartz sand, the top of inner frame 1 is fixedly connected with two symmetrical setting pull ring 102, and the connecting assembly is equipped between connecting disc and adhering plate 202, the bottom of outer frame 2 is equipped with connecting frame 201, connecting frame 201 is sleeved in the outside of connecting sleeve 101, and the connecting assembly includes the connecting piece of annular equidistance fixed connection in the bottom of connecting disc outer ring, and the adhering place of adhering plate 202 and connecting piece is equipped with limiting sleeve 203, the inside of limiting sleeve 203 is equipped with the limiting cavity 205 of adaptation with connecting piece, every connecting piece includes the center column 104 of fixed connection with connecting disc, and the outside of center column 104 is annular equidistance and has a plurality of limit sheets 103, and limit sheet 103 is fixedly connected with connecting disc, and every limit sheet 103's surface is equipped with a plurality of limit protrusions 1031, and every limit sheet 103 and center column 104 are fixedly connected with reset spring 105, first, place crucible 3 in the inside of inner frame 1, and ensure its stability, then, the connecting sleeve 101 of inner frame 1 bottom is aligned with the connecting frame 201 of outer frame 2 bottom, and they are sleeved together. At this time, the bottom of inner frame 1 and the top inside of bottom pad 204 are connected closely, guarantee the stability of inner frame 1 in outer frame 2, then, connecting disc is aligned with adhering plate 202, and is prepared to carry out the jointing. The connecting piece (is composed of center column 104 and limit sheet 103) on connecting disc will pass through the reserved hole on adhering plate 202 and enter the limiting cavity 205 in limiting sleeve 203, and in this process, the limit protrusion 1031 on limit sheet 103 will be extruded by the inner wall of limiting sleeve 203, and reset spring 105 will deform, when the connecting piece enters limiting cavity 205 completely, reset spring 105 will restore to the original state, and limit sheet 103 will be pushed to expand outward, and limit protrusion 1031 will be closely adhered with the inner wall of limiting sleeve 203, so as to realize the jointing fixing between connecting disc and adhering plate 202. At this time, a stable overall structure is formed between inner frame 1 and outer frame 2.

[0025] In the utility model, through the sleeve of connecting sleeve 101 and connecting frame 201, the jointing of connecting disc and adhering plate 202 and the support of bottom pad 204, the utility model provides a vacuum air atomization device of stable structure, can guarantee the close connection and stability between inner frame 1 and outer frame 2 during powder making, adopts the jointing mode to replace the traditional bolt connection, makes the dismounting process more simple and convenient, can be completed without extra tool, greatly improves work efficiency, reset spring 105 between limit sheet 103 and center column 104 design makes connecting piece can restore to the original state and closely adhere the inner wall of limiting sleeve 203 when being extruded, so as to guarantee the stable connection between connecting disc and adhering plate 202.

[0026] In the embodiment, the top end of the outer frame 2 is provided with a fitting plate 202, the top end of the inner frame 1 is provided with a connecting disc, the top of the fitting plate 202 is clamped with the connecting disc, the bottom of the inner cavity of the outer frame 2 is provided with a bottom pad 204, the bottom of the inner frame 1 is connected with the inner top end of the bottom pad 204, and the bottom of the inner frame 1, the outer frame 2 and the crucible 3 are all provided with through holes 206. After the above installation is completed, vacuum airflow can be introduced through the through holes 206 at the bottom of the inner frame 1, the outer frame 2 and the crucible 3 to perform atomization powder production operation. In the powder production process, the inner frame 1 and the outer frame 2 will jointly bear high temperature and pressure, and the quartz sand in the connecting sleeve 101 can effectively improve the high temperature resistance of the inner frame 1. The quartz sand filled in the connecting sleeve 101 effectively improves the high temperature resistance of the inner frame 1, so that the inner frame 1 can work stably for a long time in a high temperature environment without being easily damaged. The through holes 206 at the bottom of the inner frame 1, the outer frame 2 and the crucible 3 are designed to facilitate the introduction and discharge of the vacuum airflow, and ensure the smooth progress of the atomization powder production process.

[0027] The working principle and use process of the utility model are as follows: firstly, the crucible 3 is placed in the inner frame 1, and the stability is ensured, then the connecting sleeve 101 at the bottom of the inner frame 1 is aligned with the connecting frame 201 at the bottom of the outer frame 2, and they are sleeved together. At this time, the bottom of the inner frame 1 is tightly connected with the inner top end of the bottom pad 204, the stability of the inner frame 1 in the outer frame 2 is ensured, then the connecting disc is aligned with the fitting plate 202, and the clamping is prepared. The connecting piece (composed of the center column 104 and the limiting sheet 103) on the connecting disc will pass through the reserved hole on the fitting plate 202 and enter the limiting cavity 205 of the limiting sleeve 203. In this process, the limiting protrusion 1031 on the limiting sheet 103 will be extruded by the inner wall of the limiting sleeve 203, so that the reset spring 105 is deformed. When the connecting piece completely enters the limiting cavity 205, the reset spring 105 will restore to the original state, push the limiting sheet 103 to expand outward, and make the limiting protrusion 1031 tightly fit with the inner wall of the limiting sleeve 203, so as to realize the clamping fixation between the connecting disc and the fitting plate 202. At this time, a stable overall structure is formed between the inner frame 1 and the outer frame 2. After the above installation is completed, vacuum airflow can be introduced through the through holes 206 at the bottom of the inner frame 1, the outer frame 2 and the crucible 3 to perform atomization powder production operation. In the powder production process, the inner frame 1 and the outer frame 2 will jointly bear high temperature and pressure, and the quartz sand in the connecting sleeve 101 can effectively improve the high temperature resistance of the inner frame 1. The quartz sand filled in the connecting sleeve 101 effectively improves the high temperature resistance of the inner frame 1, so that the inner frame 1 can work stably for a long time in a high temperature environment without being easily damaged. The through holes 206 at the bottom of the inner frame 1, the outer frame 2 and the crucible 3 are designed to facilitate the introduction and discharge of the vacuum airflow, and ensure the smooth progress of the atomization powder production process.

[0028] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum gas atomization device for metal powder production comprising an inner frame (1), characterized in that: The inner frame (1) is internally provided with a crucible (3), the bottom end of the inner frame (1) is externally provided with an outer frame (2), the top end of the outer frame (2) is provided with a matching plate (202), the top end of the inner frame (1) is provided with a connecting disc, the top of the matching plate (202) is clamped with the connecting disc, the bottom of the inner cavity of the outer frame (2) is provided with a bottom pad (204), the bottom of the inner frame (1) is connected with the top of the bottom pad (204), and the bottom of the inner frame (1), the outer frame (2) and the crucible (3) are all provided with through holes (206).

2. A vacuum gas atomization apparatus for producing metal powder according to claim 1, characterized in that: The bottom of the inner frame (1) is provided with a connecting sleeve (101), a cavity is formed in the inner wall of the connecting sleeve (101), and the cavity is filled with quartz sand.

3. The vacuum gas atomizing device for metal powder production according to claim 1, characterized in that: The top of the inner frame (1) is fixedly connected with two symmetrical pull rings (102), and a connecting assembly is arranged between the connecting disc and the matching plate (202).

4. The vacuum gas atomizing device for metal powder production according to claim 2, characterized in that: The bottom of the outer frame (2) is provided with a connecting frame (201), and the connecting frame (201) is arranged outside the connecting sleeve (101).

5. The vacuum gas atomizing device for producing metal powder according to claim 3, characterized in that: The connecting assembly comprises a connecting piece fixedly connected in an annular and equidistant manner at the bottom of the outer circle of the connecting disc, a limiting sleeve (203) is arranged at the abutment position of the matching plate (202) and the connecting piece, and a limiting cavity (205) matched with the connecting piece is formed in the limiting sleeve (203).

6. A vacuum gas atomizing device for producing metal powder according to claim 5, characterized in that: Each connecting piece comprises a center column (104) fixedly connected with the connecting disc, a plurality of limiting sheets (103) are arranged in an annular and equidistant manner outside the center column (104), and the limiting sheets (103) are fixedly connected with the connecting disc.

7. A vacuum gas atomizing device for producing metal powder according to claim 6, characterized in that: A plurality of limiting protrusions (1031) are arranged on the surface of each limiting sheet (103), and a reset spring sheet (105) is fixedly connected between each limiting sheet (103) and the center column (104).

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