Water atomization copper powder sealing and flow guiding device

Abstract

The utility model discloses a water atomization copper powder sealing flow guide device. The device comprises a copper liquid leakage bag, a sealing guide cylinder and a high-pressure atomization spraying disc, a sealing spraying disc gland on the copper liquid leakage bag and the high-pressure atomization spraying disc is provided with a positioning foot and a positioning groove which are matched with each other, a fixing ring is arranged at the bottom of the copper liquid leakage bag, an outwards-turned upper edge is arranged at the upper end of the sealing guide cylinder, and the outer wall of the outwards-turned upper edge corresponds to the inner wall of the fixing ring. A semi-open annular notch is formed in the inner wall of the outwards-turned upper edge, an upper clamping ring and a lower clamping ring which are attached to the inner wall of the annular notch are assembled in the annular notch, a sealing film is clamped between the upper clamping ring and the lower clamping ring, a butt-joint notch corresponding to the butt-joint boss is formed in the outer wall of the outwards-turned upper edge, and a sealing spraying disc gland is arranged at the top of the high-pressure atomization spraying disc. The sealing spraying disc gland comprises a cover body, the cover body is detachably and fixedly connected with the high-pressure atomization spraying disc, and a double-layer packing is arranged on the inner wall of the cover body. The flow guide device is accurate and convenient in flow guide and positioning and good in sealing performance, and produced metal powder is few in oxidation impurities.

Description

Technical Field

[0001] The utility model relates to the technical field of metal powder preparation, in particular to a water atomized copper powder sealing guide device. Background Art

[0002] The preparation of metal powder is the first step in powder metallurgy. In order to meet various requirements for powder, there are also various methods for producing powder, such as mechanical method, physical method, chemical method, etc., so that metal elements, alloys or metal compounds are transformed from solid, liquid or gaseous state into powder state. The mechanical method for preparing metal powder includes grinding method and atomization method. Among them, atomization method is a method of directly crushing liquid metal or alloy to obtain powder, which is widely used.

[0003] The water-atomized copper powder is produced by first melting the electrolytic copper plate in a furnace and then injecting it into a copper liquid leak bag. The molten metal in the copper liquid leak bag passes through the beam and enters the atomizer through the leak nozzle at the bottom of the copper liquid leak bag. Under the action of high-pressure water from the atomizer, the molten metal is continuously broken into fine droplets, which fall into the coolant in the device and quickly solidify into alloy powder.

[0004] The conventional copper liquid leakage bag is directly connected to the high-pressure atomizing spray plate. The process of the molten metal entering the atomizer from the copper liquid leakage bag is very easy to absorb oxygen in the air, undergo oxidation reaction, and produce impurities, which affects the product quality. Utility Model Content

[0005] The utility model aims to provide a water-atomized copper powder sealing and guiding device which can improve the sealing performance of the device and reduce oxidation impurities in view of the shortcomings of the prior art.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a water-atomized copper powder sealing guide device, including a copper liquid leakage bag, a sealing guide tube, and a high-pressure atomizing spray disc, wherein a fixing ring is provided at the bottom of the copper liquid leakage bag, and a docking boss is fixedly connected to the fixing ring downward, and one end of the docking boss protrudes toward the center of the fixing ring, and a positioning foot is provided at the bottom of the copper liquid leakage bag; the sealing guide tube includes a cylinder body, and an outer-turned upper edge is provided at the upper end of the cylinder body, and the outer wall of the outer-turned upper edge corresponds to the inner wall of the fixing ring, and the inner wall of the outer-turned upper edge is provided with a semi-open annular notch, and a fitting that fits the inner wall of the annular notch is assembled in the annular notch An upper clamping ring and a lower clamping ring, a sealing film is clamped between the upper clamping ring and the lower clamping ring, the outer wall of the outward-turned upper edge is provided with a docking notch corresponding to the docking boss, and a connecting ring is provided below the outward-turned upper edge that fits the inner wall of the cylinder and the bottom end of the outward-turned upper edge, the connecting ring corresponds to the fixing ring and forms a detachable fixed connection; a sealing spray disc pressure cover is provided on the top of the high-pressure atomizing spray disc, and the sealing spray disc pressure cover includes a cover body, which is detachably fixed to the high-pressure atomizing spray disc, an annular sealing groove is provided on the inner wall of the cover body, a double-layer packing is assembled in the annular sealing groove, and a positioning groove corresponding to the positioning foot is provided on the top of the high-pressure atomizing spray disc.

[0007] It needs to be further explained that the sealing film between the upper clamp ring and the lower clamp ring is a metal film with a melting point lower than that of the molten metal. It will be melted and pierced at the moment the molten metal falls. The purpose of setting the sealing film is to remove oxygen in the water atomization reaction area before pouring the molten metal. Only when the molten metal falls and pierces the sealing film will the steel liquid leakage bag and the water atomization reaction area at the bottom be connected, ensuring that no air will enter the entire process of pouring the molten metal.

[0008] Preferably, the lower end of the cylinder is provided with an inner oblique insertion opening.

[0009] Preferably, the upper surface of the outwardly turned upper edge is flush with the upper surface of the upper clamping ring.

[0010] Preferably, the sealing film is aluminum foil.

[0011] Preferably, the double-layer packing is graphite packing or ceramic fiber packing.

[0012] Compared with the prior art, the utility model has the following advantages: the precise positioning of the copper liquid leakage bag and the sealing spray plate cover is achieved by the cooperation of the positioning foot and the positioning groove, and the docking is convenient and quick; the sealing guide tube is used to reduce the influence of the lateral splash of the high-pressure atomizing nozzle on the falling of the metal liquid; the double-layer packing and the sealing film are used to increase the sealing performance of the device and reduce product impurities. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 It is a cross-sectional view of the sealing guide tube in the utility model.

[0015] Figure 3 It is a top view of the sealing guide tube in the utility model.

[0016] Figure 4 It is a cross-sectional view of the copper liquid leakage bag in the utility model.

[0017] Figure 5 It is a cross-sectional view of the sealing spray disc gland in the utility model.

[0018] Figure 6 It is a top view of the high-pressure atomizing spray disc of the utility model.

[0019] Among them, 1-copper liquid leakage bag, 11-fixing ring, 12-docking boss, 13-positioning foot, 14-leakage nozzle, 2-high-pressure atomizing spray disc, 21-positioning groove, 3-sealing guide tube, 31-cylinder body, 32-outward upper edge, 33-upper clamping ring, 34-lower clamping ring, 35-aluminum foil, 36-annular notch, 37-connecting ring, 38-docking notch, 39-inner oblique plug, 4-sealing spray disc pressure cover, 41-cover body, 42-annular sealing groove, 43-double-layer packing, 5-atomizing tank, 6-metal liquid channel. DETAILED DESCRIPTION

[0020] The present invention is further explained below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that these implementation methods are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0021] like Figures 1 to 6 The water-atomized copper powder sealing and guiding device shown in the figure comprises a copper liquid leakage bag 1, a sealing and guiding tube 3, and a high-pressure atomizing spray disc 2. A fixing ring 11 is fixedly connected to the bottom of the copper liquid leakage bag 1, and a docking boss 12 is fixedly connected to the fixing ring 11 downward, and one end of the docking boss 12 protrudes toward the center of the fixing ring 11. A positioning foot 13 is provided at the bottom of the copper liquid leakage bag 1; the sealing and guiding tube 3 comprises a cylinder body 31, a metal liquid channel 6 is formed inside the cylinder body 31, an inner oblique insertion opening 39 is provided at the lower end of the cylinder body 31, an outward-turned upper edge 32 is provided at the upper end of the cylinder body 31, and the outer wall of the outward-turned upper edge 32 corresponds to the inner wall of the fixing ring 11, and the inner wall of the outward-turned upper edge 32 is provided with a semi-open annular notch 36, and an upper clamping ring 33 and a lower clamping ring 34 that fit the inner wall of the annular notch 36 are assembled in the annular notch 36, and an aluminum is clamped between the upper clamping ring 33 and the lower clamping ring 34. Foil 35, the upper surface of the outward-turned upper edge 32 is flush with the upper surface of the upper clamping ring 33, the outer wall of the outward-turned upper edge 32 is provided with a docking notch 38 corresponding to the docking boss 12, and a connecting ring 37 is provided below the outward-turned upper edge 32 to fit the inner wall of the cylinder 31 and the bottom end of the outward-turned upper edge 32, and the connecting ring 37 corresponds to the fixing ring 11 and is connected by bolts; a sealing spray disc gland 4 is provided on the top of the high-pressure atomizing spray disc 2, and the sealing spray disc gland 4 includes a cover body 41, and the cover body 41 is connected to the high-pressure atomizing spray disc 2 by bolts, and an annular sealing groove 42 is provided on the inner wall of the cover body 41, and a double-layer packing 43 is assembled in the annular sealing groove 42, and the double-layer packing 43 is a graphite packing or a ceramic fiber packing, and a positioning groove 21 corresponding to the positioning foot 13 is provided at the top of the high-pressure atomizing spray disc 2, and an atomizing tank 5 is fixedly connected to the bottom of the high-pressure atomizing spray disc 2.

[0022] Working principle: put the double-layer packing 43 into the annular sealing groove 42 of the sealing spray plate gland 4 in advance, clamp the aluminum foil 35 between the upper clamp ring 33 and the lower clamp ring 34 and place it in the annular notch 36 of the sealing guide tube 3, ensure that the upper surface of the upper clamp ring 33 is flush with the upper surface of the outward-turned upper edge 32, align the docking boss 12 on the fixing ring 11 and the docking notch 38 on the outward-turned upper edge 32, put the sealing guide tube 3 in place, put on the connecting ring 37 and connect it with the fixing ring 11 bolts, ensure that the sealing guide tube 3 is tightly connected with the copper liquid leakage bag 1, slowly hang down the copper liquid leakage bag 1, constantly align the positioning foot 13 and the positioning groove 21, and insert the inner oblique insertion port 39 of the sealing guide tube 3 into the sealing spray plate gland 4 until the positioning foot 13 and the positioning groove 21 are fixed and stuck;

[0023] Before injecting the molten metal into the copper liquid leakage bag 1, the oxygen in the atomization tank 5 and the high-pressure atomization spray disc 2 is removed by a deoxygenation device to ensure that the molten metal channel 6 below the aluminum foil 35 and the atomization area are in an oxygen-free state before injection, and the high-pressure atomization nozzle is turned on; during injection, the molten metal flows down along the leakage nozzle 14 to penetrate the aluminum foil 35 and prepare water-atomized copper powder with the high-pressure water below.

[0024] The above description shows and describes the preferred embodiments of the utility model. As mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A water atomized copper powder sealing and guiding device, characterized in that: The invention comprises a copper liquid leakage bag, a sealing guide tube, and a high-pressure atomizing spray plate. A fixing ring is provided at the bottom of the copper liquid leakage bag, a docking boss is fixedly connected downward to the fixing ring, one end of the docking boss protrudes toward the center of the fixing ring, and a positioning foot is provided at the bottom of the copper liquid leakage bag; the sealing guide tube comprises a cylinder body, an outer-turned upper edge is provided at the upper end of the cylinder body, an outer wall of the outer-turned upper edge corresponds to an inner wall of the fixing ring, a semi-open annular notch is provided on the inner wall of the outer-turned upper edge, an upper clamping ring and a lower clamping ring which fit the inner wall of the annular notch are assembled in the annular notch, and a space between the upper clamping ring and the lower clamping ring is provided. A sealing film is clamped, and the outer wall of the outward-turned upper edge is provided with a docking notch corresponding to the docking boss, and a connecting ring is provided below the outward-turned upper edge that fits the inner wall of the cylinder and the bottom end of the outward-turned upper edge, and the connecting ring corresponds to the fixing ring and forms a detachable fixed connection; a sealing spray disc pressure cover is provided on the top of the high-pressure atomizing spray disc, and the sealing spray disc pressure cover includes a cover body, and the cover body is detachably fixed to the high-pressure atomizing spray disc, and an annular sealing groove is provided on the inner wall of the cover body, and a double-layer packing is assembled in the annular sealing groove, and a positioning groove corresponding to the positioning foot is provided on the top of the high-pressure atomizing spray disc.

2. A water atomized copper powder sealing and guiding device according to claim 1, characterized in that: An inner oblique insertion opening is arranged at the lower end of the cylinder.

3. A water atomized copper powder sealing and guiding device according to claim 1, characterized in that: The upper surface of the outwardly turned upper edge is flush with the upper surface of the upper clamping ring.

4. A water atomized copper powder sealing and guiding device according to claim 1, characterized in that: The sealing film is aluminum foil.

5. The water atomized copper powder sealing and guiding device according to claim 1, characterized in that: The double-layer packing is graphite packing or ceramic fiber packing.

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