Gas atomization test device

Abstract

The utility model discloses a gas atomization test device. The gas atomization test device is characterized in that an atomization piece is fixed on a rack and is provided with a liquid inlet and a mist outlet; a connecting pipe is arranged in the atomizing part, and an annular air outlet seam is formed in the connecting pipe; an air inlet communicated with an external high-pressure air source is formed in the atomizing part; the telescopic part is installed on the rack, the vertical telescopic end of the telescopic part is fixed to the charging barrel, the discharging pipe and the charging barrel are detachably fixed and communicated, the lower end of the discharging pipe can be inserted into the liquid inlet, and a chamfer is arranged on the outer side edge of the lower end of the discharging pipe. The air outlet pressure of the annular air outlet seam can be adjusted through the valve body, and the length of the part, entering the inner side of the connecting pipe, of the discharging pipe can be adjusted through the telescopic part; discharge pipes with different chamfers can be mounted on the charging barrel; by means of the design, atomization process parameters can be adjusted, and therefore the optimal atomization effect is obtained; when the device is used for carrying out an early-stage atomization test, the target particle size of the alloy powder under different atomization process parameters is effectively predicted, so that subsequent mass production is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of alloy powder smelting equipment, and more specifically to a gas atomization test device. Background Art

[0002] In the process of preparing alloy powder by vacuum induction melting gas atomization, the crushing and solidification process is difficult to observe, resulting in unclear research on the gas atomization mechanism of process parameters such as different atomization pressures, different discharge pipe elongations, and different outer edge chamfers of the discharge pipe; in the process of powder preparation, the above process parameters will have a great impact on the powder particle size distribution and performance. However, in the actual production process, in order to achieve the best yield of the target powder, the best process parameter values ​​can only be found by experience.

[0003] In addition, the atomization tank of the existing gas atomization equipment is usually a closed space, and the inside of the atomization tank can only be observed through a glass window. Since the atomization results corresponding to the adjustment of the above-mentioned process parameters are different, it is difficult for operators to distinguish the differences in the above-mentioned atomization results through the existing observation window. The adaptability of the process parameters can only be judged by the prepared finished alloy powder, which consumes a lot of manpower and material resources and is costly.

[0004] Therefore, how to provide an aerosol test device that can overcome the above problems is an issue that those skilled in the art need to solve urgently. Utility Model Content

[0005] In view of this, the utility model provides an aerosolization test device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An aerosolization test device, comprising:

[0008] A frame, wherein the frame is provided with a clearance hole;

[0009] Atomizer, the atomizer is fixed on the frame, the atomizer is hollow inside and has a liquid inlet and a mist outlet at both ends, the liquid inlet is located above the mist outlet, and the mist outlet corresponds to and is connected with the position of the clearance hole; a connecting pipe is integrally formed inside the atomizer, the tube length direction of the connecting pipe is the same as the length direction of the atomizer, the liquid inlet and the mist outlet both correspond to and are connected with the position of the connecting pipe, and an annular air outlet slit penetrating the inner and outer side walls of the connecting pipe is coaxially provided; an air inlet is provided on the side wall of the atomizer, the air inlet is connected to an external high-pressure air source, and a valve body is connected in series between the two;

[0010] A telescopic member, wherein the telescopic member is mounted on the frame;

[0011] The liquid supply part includes a barrel and a discharge pipe, the barrel is arranged vertically and has openings at both ends, the barrel is fixed to the vertical telescopic end of the telescopic part, the discharge pipe is arranged vertically and its upper end is detachably fixed and connected to the lower open end of the barrel, the lower end of the discharge pipe is directly opposite to the liquid inlet, the lower end of the discharge pipe can be inserted into the liquid inlet, and the outer side of the lower end of the discharge pipe is chamfered.

[0012] Through the above technical solutions, it can be known that compared with the prior art, the utility model discloses an aerosol test device. In the utility model, by designing an atomizer and a discharge pipe, the two can simulate the atomization principle and process of an actual aerosol device; the application can use the valve body to adjust the outlet pressure of the annular outlet slit, and the application can use the telescopic member to adjust the length of the discharge pipe entering the inner side of the connecting pipe; the barrel can be installed with a discharge pipe with different chamfers; the above design can adjust the atomization process parameters to obtain the optimal atomization effect; the device is used to carry out preliminary atomization tests, and the target particle size of the alloy powder under different atomization process parameters is effectively predicted, so as to facilitate subsequent mass production, reduce the test cost in the alloy powder production process, and effectively improve the production efficiency of the alloy powder and the target powder yield; the atomizer is provided with a connecting pipe and an annular outlet slit, and the annular outlet slit can evenly discharge gas and has a good atomization effect; the barrel can be moved up and down by turning the hand wheel, and the barrel can move vertically stably; the discharge pipe and the barrel can be detachably fixed, and the liquid in the barrel can be discharged smoothly from the discharge pipe.

[0013] Preferably, the frame includes a bottom plate, a top plate and a column, the bottom plate and the top plate are arranged horizontally and face each other vertically, a plurality of columns are vertically provided, the upper ends of the plurality of columns are fixed to the top plate, the lower ends of the plurality of columns are fixed to the bottom plate, the top plate is centrally provided with the clearance hole, the atomizing element and the telescopic element are arranged on the top plate. The atomized droplets discharged from the mist outlet can pass through the clearance hole and fall between the bottom plate and the top plate, so that the operator can observe the falling droplets.

[0014] Preferably, it further comprises a baffle, wherein a plurality of baffles are arranged vertically, and the upper and lower ends of the baffles can be fixed to the bottom plate and the top plate respectively, and the bottom plate, the top plate and the plurality of baffles can define a closed space, and a basin filled with water can be placed on the bottom plate, and the basin is located in the closed space, and the clearance hole is arranged just above the basin. This design prevents small droplets falling from the clearance hole from splashing outside the frame at will.

[0015] Preferably, the telescopic member includes a mounting bracket, a lead screw, a hand wheel, a guide rod, a nut, and a connecting member. The mounting bracket is fixed on the top plate. The lead screw is vertically rotatably supported on the mounting bracket. The hand wheel is coaxially fixed to the upper end of the lead screw. The guide rod is vertically fixed on the mounting bracket. The nut is screwed on the lead screw. The nut is provided with a guide hole, and the guide rod is slidably inserted into the guide hole. One end of the connecting member is fixed to the nut, and the other end of the connecting member is fixed to the outer side wall of the cartridge. The cartridge can move vertically stably.

[0016] Preferably, the atomizing member is provided with a plurality of air inlets. The plurality of air inlets are evenly arranged along the circumferential direction of the connecting pipe. The outer contour of the cross section of the connecting pipe is circular. The air inlet direction of the air inlets is arranged tangentially or radially along the outer contour of the cross section of the connecting pipe. The plurality of air inlets can improve the air outlet effect of the annular air outlet slit.

[0017] Preferably, the annular air outlet slit is arranged close to the mist outlet; both parallel slit walls of the annular air outlet slit have a taper, and the large diameter end of the slit wall of the annular air outlet slit is arranged close to the liquid inlet. The gas discharged from the annular air outlet slit can reliably collect and disperse the liquid and blow it out from the mist outlet.

[0018] Preferably, the liquid supply member further includes a heating wire. The heating wire is evenly wound around the outer side wall of the cartridge, and the heating wire can be connected to an external power supply. The molten metal in the cartridge will not solidify. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0020] Figure 1 is an overall axonometric view of an air atomization test device Figure 1 ;

[0021] Figure 2 is an overall axonometric view of an air atomization test device Figure 2 ;

[0022] Figure 3 is a partial cross-sectional schematic view of an air atomization test device;

[0023] Figure 4 is Figure 3 a partial enlarged view at A in

[0024] Figure 5It is an axonometric view of an atomizing member in which the air inlet direction of the air inlet in an air atomization test device is arranged tangentially along the outer contour of the cross-section of the connecting pipe.

[0025] In the figure:

[0026] 01 is a frame, 010 is a bottom plate, 011 is a top plate, 0110 is a relief hole, 012 is a column, 02 is an atomizing member, 020 is a liquid inlet, 021 is a mist outlet, 022 is a connecting pipe, 023 is an annular air outlet slit, 024 is an air inlet, 03 is a mounting bracket, 04 is a lead screw, 05 is a handwheel, 06 is a guide rod, 07 is a nut, 08 is a connecting member, 09 is a cartridge, 10 is a discharge pipe, 100 is a chamfer, 11 is a heating wire. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] The utility model discloses an aerosol test device. In the utility model, the atomizing element 02 and the discharge pipe 10 are designed, and the two can simulate the atomization principle and process of the actual aerosol equipment; the valve body can be used to adjust the outlet pressure of the annular air outlet gap 023, and the telescopic element can be used to adjust the length of the discharge pipe 10 entering the inner side of the connecting pipe 022; the barrel 09 can be installed with the discharge pipe 10 with different chamfers 100; the above design can adjust the atomization process parameters, so as to obtain the best atomization effect; the device is used to carry out preliminary atomization tests, and the target particle size of the alloy powder under different atomization process parameters is effectively predicted, so as to facilitate subsequent mass production, reduce the test cost in the alloy powder production process, and effectively improve the production efficiency of the alloy powder and the target powder yield; atomization experiments are carried out by the device, and a large amount of experimental data can be obtained, and these data are consistent with the actual atomization process parameters, and the reliability is high. On the basis of a large amount of experimental data, it is conducive to using a multi-objective optimization algorithm to optimize the process parameters, and better obtain the best process parameters for alloy powder preparation. In addition, in the process of structural design of the atomizer 02, the atomizer 02 to be tested can be installed on the top plate 011 for atomization test, so as to further guide and optimize the design of the atomizer 02; by designing the frame 01, the atomizer 02, the telescopic part and the liquid supply part can be reliably installed and arranged, the frame 01 includes a bottom plate 010, a top plate 011 and a column 012, and the small droplets formed by the atomizer 02 after atomization can fall under the top plate 011, which is convenient for the operator to observe it; the atomizer 02 is provided with a connecting pipe 022 and an annular air outlet slit 023, the annular air outlet slit 023 can evenly discharge air and has a good atomization effect; the barrel 09 can be moved up and down by turning the hand wheel 05, and the barrel 09 can move vertically stably; the discharge pipe 10 and the barrel 09 are detachably fixed, and the liquid in the barrel 09 can be smoothly discharged from the discharge pipe 10.

[0029] Example

[0030] See attached Figures 1-5 The utility model is a schematic diagram of the overall and partial structures of an embodiment of the utility model. The utility model specifically discloses an aerosolization test device, including:

[0031] Rack 01, rack 01 includes a bottom plate 010, a top plate 011 and a column 012, the bottom plate 010 and the top plate 011 are both rectangular plates and have the same specifications, the bottom plate 010 and the top plate 011 are both horizontally arranged and face each other vertically, four columns 012 with rectangular cross-sectional outer contours are vertically arranged, the upper ends of the four columns 012 are fixed to the top plate 011, the lower ends of the four columns 012 are fixed to the bottom plate 010, and a circular clearance hole 0110 is centrally arranged on the top plate 011;

[0032] Atomizer 02, atomizer 02 is fixed on the frame 01, the interior of atomizer 02 is hollow and a liquid inlet 020 and a mist outlet 021 are respectively arranged in the center at both ends, the liquid inlet 020 is located above the mist outlet 021, and the mist outlet 021 corresponds to and is connected with the clearance hole 0110; a connecting tube 022 with a circular cross-sectional outer contour is integrally formed inside the atomizer 02, the tube length direction of the connecting tube 022 is the same as the length direction of the atomizer 02, the liquid inlet 020 and the mist outlet 021 are both corresponding to and are connected with the connecting tube 022, and an annular air outlet slit 023 is coaxially arranged on the connecting tube 022 and runs through the inner and outer side walls thereof, and the annular air outlet slit 023 is coaxially arranged on the connecting tube 022. 3 is arranged near the mist outlet 021; the two parallel slit walls of the annular air outlet slit 023 are both tapered, and the large diameter end of the slit wall of the annular air outlet slit 023 is arranged near the liquid inlet 020, that is, the air outlet direction of the annular air outlet slit 023 is obliquely downward and points to the center line of the connecting pipe 022; an air inlet 024 is provided on the side wall of the atomizing element 02, and the air inlet 024 is connected to an external high-pressure gas source and a valve body is connected in series between the two, and the external high-pressure gas source can transport high-pressure inert gas to the inside of the atomizing element 02 through the air inlet 024, and the above-mentioned inert gas is nitrogen or argon; the air inlet pressure and flow rate of the air inlet 024 can be controlled by the valve body;

[0033] The high-pressure inert gas inside the atomizing element 02 is discharged from the annular gas outlet slit 023 and forms a gas flow field inside the annular gas outlet slit 023. The liquid to be atomized flows downward inside the connecting tube 022. When the liquid passes through the gas flow field, it will be broken into small droplets by the high-pressure inert gas discharged from the annular gas outlet slit 023, thereby realizing the aerosolization of the liquid.

[0034] Telescopic member, the telescopic member includes a mounting frame 03, a screw rod 04, a hand wheel 05, a guide rod 06, a nut 07 and a connecting member 08. The mounting frame 03 is fixed on the top plate 011, and a screw rod 04 is supported for vertical rotation on the mounting frame 03. The hand wheel 05 is coaxially fixed with the upper end of the screw rod 04. The guide rod 06 is vertically fixed on the mounting frame 03. The nut 07 is screwed on the screw rod 04. The nut 07 is provided with a guide hole. The guide rod 06 is slidably inserted in the guide hole. One end of the connecting member 08 is fixed to the nut 07. The connecting member 08 can be moved up and down by rotating the hand wheel 05.

[0035] Liquid supply parts, the liquid supply parts include a barrel 09 and a discharge pipe 10, the barrel 09 is arranged vertically and has two ends open, the end of the connecting piece 08 away from the nut 07 is fixed to the outer wall of the barrel 09, and the connecting piece 08 can drive the barrel 09 to move up and down when it moves up and down, the discharge pipe 10 is arranged vertically, and its upper end is detachably fixed and connected to the lower open end of the barrel 09 by means of threaded connection, the lower end of the discharge pipe 10 is directly opposite to the liquid inlet 020, the lower end of the discharge pipe 10 can be inserted into the liquid inlet 020, and the outer side of the lower end of the discharge pipe 10 is provided with a chamfer 100;

[0036] The structure of the above-mentioned gas flow field determines the atomization efficiency of the liquid and the performance of the powder obtained after the low-melting-point metal is atomized, and the structure of the gas flow field will change with different atomization pressures, different lengths of the discharge pipe 10 entering the inner side of the connecting pipe 022, and the chamfer 100 of the outer edge of the lower end of the discharge pipe 10. The test device can use the valve body to control the outlet pressure of the annular air outlet gap 023; use the telescopic part to adjust the length of the discharge pipe 10 entering the inner side of the connecting pipe 022; the discharge pipe 10 with different chamfers 100 can be replaced on the barrel 09; before the mass production of alloy powder, the present application can be used to carry out gas atomization test to predict the target particle size of the alloy powder under different process parameters, thereby improving the production efficiency and target powder yield of the alloy powder.

[0037] The barrel 09 can contain room temperature liquid, such as pure water or alcohol, etc. The barrel 09 can also contain melted low-melting-point metal. When the low-melting-point metal is added to the barrel 09, it is necessary to melt the low-melting-point metal in a muffle furnace or other induction heating device in advance; the above two liquids can enter the connecting pipe 022 through the discharge pipe 10;

[0038] The chamfer 100 disposed on the outer side of the lower end of the discharge pipe 10 is different, which can affect the structure of the gas flow field and the pressure at the end of the discharge pipe 10, because with the change of the chamfer 100, the pressure at the retention point in the gas flow field and the position of the retention point will change greatly;

[0039] In the actual atomization process, it is necessary to ensure that negative pressure is always formed at the end of the discharge pipe 10, otherwise the liquid in the barrel 09 will be sprayed upward.

[0040] More specifically, it also includes a rectangular baffle, four of which are arranged vertically, and the upper and lower ends of the baffles can be fixed to the bottom plate 010 and the top plate 011 respectively by bolt connection or clamping. The bottom plate 010, the top plate 011 and the multiple baffles can define a closed space, and a basin filled with water can be placed on the bottom plate 010, and the basin is located in the closed space. A clearance hole 0110 is arranged directly above the basin; when atomizing low-melting-point metals, the atomized metal droplets will fall into the water in the basin and cool rapidly. Due to the baffles, the above-mentioned metal droplets will not splash out at will. After the atomization is completed, the metal powder in the water in the basin is centrifugally screened and dried, and the particle size of the metal powder is analyzed to obtain the target powder yield under different process parameters.

[0041] The atomizing member 02 is provided with a plurality of air inlets 024. The plurality of air inlets 024 are uniformly arranged along the circumferential direction of the connecting pipe 022. The outer contour of the cross-section of the connecting pipe 022 is circular. The air inlet direction of the air inlets 024 is arranged tangentially or radially along the outer contour of the cross-section of the connecting pipe 022. Increasing the number of the air inlets 024 is beneficial to the distribution of the internal gas pressure of the atomizing member 02, making the air outlet pressure of the annular air outlet slit 023 more balanced and improving the atomizing effect.

[0042] More specifically, the liquid supply member further includes a heating wire 11. The heating wire 11 is uniformly wound around the outer side wall of the cartridge 09. The heating wire 11 can be connected to an external power supply. When the low melting point metal is added into the cartridge 09, the heating wire 11 is energized to heat up the cartridge 09 to ensure that the low melting point metal will not solidify.

[0043] Before the test device is used, it is necessary to rotate the handwheel 05 to raise the cartridge 09 to a high position and install a suitable discharge pipe 10 below the cartridge 09.

[0044] When atomizing pure water and alcohol, a water basin will be placed on the bottom plate 010. During atomization, the operator adds the above-mentioned liquid into the material pipe and gradually adjusts the handwheel 05 to make the discharge pipe 10 move vertically. Other operators wear protective glasses and observe at a position about 1.5 meters away from the cartridge 09. At the same time, a high-speed camera can also be used externally to observe the atomized small liquid droplets and dynamically detect the particle size range of the small liquid droplets.

[0045] When atomizing the melted low melting point metal, first arrange the basin body and the baffle in place, then energize the heating wire 11, add the melted low melting point metal into the cartridge 09. After atomization, centrifuge and screen the metal powder in the water in the basin body and dry it, and analyze the particle size of the metal powder to obtain the target powder yield under different process parameters.

[0046] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0047] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An aerosol test device, characterized in that: include: A frame (01), wherein the frame (01) is provided with a clearance hole (0110); Atomizer (02), the atomizer (02) is fixed on the frame (01), the atomizer (02) is hollow inside and has a liquid inlet (020) and a mist outlet (021) at both ends, the liquid inlet (020) is located above the mist outlet (021), the mist outlet (021) corresponds to the position of the clearance hole (0110) and is connected; a connecting pipe (022) is integrally formed inside the atomizer (02), and the connecting pipe (022) is connected to the mist outlet (0110). The length direction of the tube (022) is the same as the length direction of the atomizer (02); the liquid inlet (020) and the mist outlet (021) are both corresponding to and connected with the connecting tube (022); the connecting tube (022) is coaxially provided with an annular air outlet slit (023) penetrating the inner and outer side walls thereof; the side wall of the atomizer (02) is provided with an air inlet (024), the air inlet (024) is connected to an external high-pressure air source, and a valve body is connected in series between the two; A telescopic member, the telescopic member being mounted on the frame (01); A liquid supply component, the liquid supply component comprises a barrel (09) and a discharge pipe (10), the barrel (09) is arranged vertically and has openings at both ends, the barrel (09) is fixed to the vertical telescopic end of the telescopic component, the discharge pipe (10) is arranged vertically and its upper end is detachably fixed and connected to the lower open end of the barrel (09), the lower end of the discharge pipe (10) is directly opposite to the liquid inlet (020), the lower end of the discharge pipe (10) can be inserted into the liquid inlet (020), and the outer side of the lower end of the discharge pipe (10) is provided with a chamfer (100).

2. The aerosol test device according to claim 1, characterized in that: The frame (01) comprises a bottom plate (010), a top plate (011) and a column (012); the bottom plate (010) and the top plate (011) are both arranged horizontally and face each other vertically; a plurality of columns (012) are vertically arranged; the upper ends of the plurality of columns (012) are fixed to the top plate (011); the lower ends of the plurality of columns (012) are fixed to the bottom plate (010); a clearance hole (0110) is centrally arranged on the top plate (011); and the atomizing element (02) and the telescopic element are arranged on the top plate (011).

3. The aerosol test device according to claim 2, characterized in that: It also includes baffles, which are arranged in plurality in a vertical direction. The upper end and the lower end of the baffles can be fixed to the bottom plate (010) and the top plate (011) respectively. The bottom plate (010), the top plate (011) and the plurality of baffles can define a closed space. A basin filled with water can be placed on the bottom plate (010). The basin is located in the closed space, and the clearance hole (0110) is arranged directly above the basin.

4. The aerosol test device according to claim 2, characterized in that: The telescopic member comprises a mounting frame (03), a screw rod (04), a hand wheel (05), a guide rod (06), a nut (07) and a connecting member (08); the mounting frame (03) is fixed on the top plate (011); the screw rod (04) is vertically rotatably supported on the mounting frame (03); the hand wheel (05) is coaxially fixed to the upper end of the screw rod (04); the guide rod (06) is vertically fixed to the mounting frame (03); the nut (07) is screwed on the screw rod (04); a guide hole is provided on the nut (07); the guide rod (06) is slidably inserted into the guide hole; one end of the connecting member (08) is fixed to the nut (07); and the other end of the connecting member (08) is fixed to the outer wall of the barrel (09).

5. The aerosol test device according to claim 1, characterized in that: The atomizing element (02) is provided with a plurality of air inlets (024), the plurality of air inlets (024) are evenly arranged along the circumference of the connecting tube (022), the cross-sectional outer contour of the connecting tube (022) is circular, and the air inlet directions of the air inlets (024) are arranged along the tangent or radial direction of the cross-sectional outer contour of the connecting tube (022).

6. The aerosol test device according to claim 1, characterized in that: The annular air outlet slit (023) is arranged close to the mist outlet (021); the two parallel slit walls of the annular air outlet slit (023) are both tapered, and the large diameter end of the slit wall of the annular air outlet slit (023) is arranged close to the liquid inlet (020).

7. The aerosol test device according to claim 1, characterized in that: The liquid supply component also includes a heating wire (11), which is evenly wound on the outer wall of the barrel (09) and can be connected to an external power source.

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