A feeding device for preparing a multi-component alloy

Abstract

A kind of multi-element alloy preparation feeding device, it relates to material conveying equipment, it includes storage part, material distribution part, mixing bin, conveying part, pulse valve and transmission part.Storage part has multiple storage bins and respectively with the lower end of each storage bin communication's discharge pipe;Material distribution part includes power element, driving gear and material distribution gear, conveying part corresponds with material distribution gear one by one;Conveying part has suction port and discharge port, suction port is located on the upper side of annular material distribution groove on material distribution gear;Discharge port is communicated with mixing bin;Pulse valve includes valve seat and valve stem, valve seat is fixedly arranged;The gas inlet of pulse valve is communicated with high-pressure gas source, the gas outlet of pulse valve is communicated with mixing bin, and pulse airflow is injected into mixing bin;Discharge part includes feed end and discharge end, discharge end is higher than feed end.The present application can uniformly mix each element raw material, then lift and put into electric heating furnace.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material conveying equipment, and particularly relates to a feeding device for multi-element alloy preparation. BACKGROUND

[0002] Multi-element alloys break through the performance limitations of single metals and binary alloys through the synergistic effect of matrix elements, main alloying elements and supplementary elements, and provide customized metal material solutions for different complex scenarios (such as high temperature, high pressure, lightweight and corrosion resistance), and are the'material cornerstone' of modern industry (especially high-end manufacturing).

[0003] In the preparation of multi-element alloys, the matrix element is first melted in a heating furnace, and then the mixed other alloy element oxides and supplementary elements (hereinafter referred to as mixed materials) are put into the furnace, and the mixed materials and the matrix alloy in the molten state undergo oxidation-reduction reaction. Before the mixed materials are put into the furnace, the mixing of the element raw materials contained therein is one of the core pretreatment processes for preparing high-performance alloy materials, and whether the mixing is uniform will directly determine the key indicators such as the mechanical properties (strength, hardness) and chemical stability (corrosion resistance, high temperature resistance) of the subsequent products.

[0004] At the same time, the temperature at the top of the heating furnace is high, which can reach more than 3000 degrees Celsius, and it is necessary to develop a feeding device for multi-element alloy preparation which uniformly mixes the supplementary element raw materials at a low place (for example, the ground) and then lifts and puts them into the electric heating furnace. SUMMARY

[0005] The present application provides a feeding device for multi-element alloy preparation, which uniformly mixes the element raw materials at a low place and then lifts and puts the mixed materials into the electric heating furnace.

[0006] To achieve the above technical purposes, the application discloses a feeding device for multi-element alloy preparation, which comprises a storage part, a plurality of storage bins and a plurality of discharge pipes which are respectively communicated with the lower ends of the storage bins; a distribution part, a plurality of distribution gear wheels which are arranged in a vertical direction, the rotation axes of the distribution gear wheels are arranged vertically, and an annular distribution groove is arranged on the upper surface of the distribution gear wheel; the distribution groove is arranged on the lower side of the outlet of the lower end of the discharge pipe; a mixing bin; a plurality of conveying parts which are corresponding to the distribution gear wheels; the conveying part has a suction port and a discharge port, the suction port is arranged on the upper side of the distribution groove, and the discharge port is communicated with the mixing bin; a pulse valve, which comprises a valve seat and a valve rod, the valve seat is fixedly arranged, the air inlet of the pulse valve is communicated with a high-pressure gas source, the air outlet of the pulse valve is communicated with the mixing bin, an openable / closable air flow channel is formed between the air inlet and the air outlet, and the air outlet injects pulse air flow into the mixing bin; a transmission part, which comprises a transmission gear and a cam shaft, the transmission gear is in transmission connection with the cam shaft through a transmission shaft, the transmission gear is engaged with the distribution gear wheel, and the outer surface of the cam shaft is provided with a cam groove; the valve rod of the pulse valve is fixedly connected with a sliding block, a driven pin on the sliding block is connected with the cam groove, and the air flow channel is periodically opened and closed along with the rotation of the cam shaft; and a discharge part, which comprises a feeding end and a discharging end; the height position of the discharging end is higher than that of the feeding end; the feeding end is arranged on the lower side of the mixing bin and is communicated with the mixing bin; and a discharge port is arranged on the lower side of the discharging end.

[0007] In a possible implementation, a rotatable discharge auger is arranged in the discharge pipe.

[0008] In a possible implementation, a plurality of distribution gear wheels are arranged in a vertical direction, and the pitch circle diameters of the distribution gear wheels are sequentially increased from top to bottom.

[0009] In a possible implementation, the conveying part comprises a Venturi tube, a suction pipe and a discharge pipe; the Venturi tube has a high-pressure gas inlet end, a material suction end and a material discharge end; the high-pressure gas inlet end is communicated with a high-pressure gas source; the material suction end is communicated with one end of the suction pipe, and the other end of the suction pipe is the suction port; the material discharge end is communicated with one end of the discharge pipe, and the other end of the discharge pipe is the discharge port.

[0010] In a possible implementation, the pulse valve is communicated with the mixing bin through an air outlet pipe; the position where the discharge port is communicated with the mixing bin is arranged on the upper side of the position where the air outlet of the pulse valve is communicated with the mixing bin; or the discharge port is arranged in the air outlet pipe, and an annular air outlet is formed between the air outlet pipe and the discharge port.

[0011] In one possible implementation, the pulse valve is connected to the mixing chamber via an air outlet pipe, and the extension direction of a section of the air outlet pipe near the air outlet is tangent to the side wall of the mixing chamber, thereby forming a rotating airflow within the mixing chamber.

[0012] In one possible implementation, the cam groove includes a first groove segment and a second groove segment; as the camshaft rotates, when the follower pin is located in the first groove segment, the valve stem drives the cone at its lower end to move toward the sealing cone surface on the valve seat to close the airflow passage; when the follower pin is located in the second groove segment, the cone moves away from the sealing cone surface to open the airflow passage.

[0013] In one possible implementation, the transmission unit includes a fixedly mounted support frame, a transmission rod slidably connected to the support frame, and a lower end of the transmission rod fixedly connected to the upper end of the valve stem, with a radial protrusion at the connection point. A compression spring is provided between the radial protrusion and the support frame. The cam groove includes a first groove segment and a second groove segment. The first groove segment extends vertically. As the camshaft rotates, when the driven pin is located in the first groove segment, the compression spring pushes the valve stem to move its lower end of the conical body away from the sealing conical surface on the valve seat, thereby quickly opening the airflow passage. When the driven pin is located in the second groove segment, the camshaft drives the slider and the valve stem to move upward, and the conical body and the sealing conical surface move closer to each other to close the airflow passage.

[0014] In one possible implementation, a spring is provided between the follower pin and the slider to provide an elastic force that moves the follower pin toward the cam groove.

[0015] In one possible implementation, the unloading section includes a conveyor chain; a first pipe and a second pipe are provided parallel and spaced apart between the feeding end and the discharging end; a wheel is provided inside both the feeding end and the discharging end, and the wheel is provided with circumferentially evenly distributed transmission teeth; the conveyor chain bypasses the wheel on the feeding end and the discharging end, and passes through the first pipe and the second pipe; a plurality of evenly distributed conveyor discs are provided on the conveyor chain; the transmission teeth mesh with the conveyor discs.

[0016] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages: A feeding device for preparing multi-element alloys can uniformly mix various elemental raw materials on the ground and lift the mixed material into an electric heating furnace. The main part of the feeding device is located at a low position away from the electric heating furnace, avoiding the adverse effects of high temperature on the equipment and extending the service life of the feeding device. Attached Figure Description

[0017] Figure 1 The perspective view of the feeding device for preparing the multi-element alloy according to an embodiment of the present application.

[0018] Figure 2 The front view of the feeding device for preparing the multi-element alloy according to an embodiment of the present application.

[0019] Figure 3 The schematic diagram of the overall structure of the storage part, the distribution part, the mixing bin, the conveying part, the pulse valve and the transmission part in the feeding device for preparing the multi-element alloy according to an embodiment of the present application.

[0020] Figure 4 The schematic diagram of the structure of the distribution part in the feeding device for preparing the multi-element alloy according to an embodiment of the present application.

[0021] Figure 5 The schematic diagram of the connection structure of the storage part and the distribution part in the feeding device for preparing the multi-element alloy according to an embodiment of the present application.

[0022] Figure 6 The schematic diagram of the connection structure of the conveying part and the distribution part in the feeding device for preparing the multi-element alloy according to an embodiment of the present application.

[0023] Figure 7 The schematic diagram of the structure of the conveying part in the feeding device for preparing the multi-element alloy according to an embodiment of the present application.

[0024] Figure 8 The schematic diagram of the structure of the Venturi tube in the feeding device for preparing the multi-element alloy according to an embodiment of the present application.

[0025] Figure 9 The schematic diagram of the structure of the transmission part in the feeding device for preparing the multi-element alloy according to an embodiment of the present application.

[0026] Figure 10 The sectional view of the transmission part in the feeding device for preparing the multi-element alloy according to an embodiment of the present application.

[0027] Figure 11 The schematic diagram of the structure of the transmission part in the feeding device for preparing the multi-element alloy according to another embodiment of the present application.

[0028] Figure 12 The schematic diagram of the structure of the discharge part in the feeding device for preparing the multi-element alloy according to an embodiment of the present application.

[0029] Figure 13 The schematic diagram of the connection structure of the discharge pipe and the air outlet pipe in the feeding device for preparing the multi-element alloy according to an embodiment of the present application.

[0030] Explanation of reference signs

[0031] 1. Storage section; 11. Storage silo; 12. Unloading pipe; 13. Unloading auger;

[0032] 2. Material distribution section; 21. Power component; 22. Drive gear; 23. Material distribution gear; 24. Material distribution chute;

[0033] 3. Mixing silo;

[0034] 4. Conveying section; 41. Venturi tube; 411. High-pressure gas inlet end; 412. Material suction end; 413. Material discharge end; 42. Suction pipe; 421. Suction port; 43. Discharge pipe; 431. Discharge port;

[0035] 5. Pulse valve; 51. Valve seat; 511. Air inlet; 512. Inner cavity; 513. Sealing cone surface; 52. Valve stem; 53. Conical body; 54. Air outlet pipe; 541. Air outlet;

[0036] 6. Transmission unit; 61. Transmission gear; 62. Transmission shaft; 63. Camshaft; 630. Cam groove; 631. First groove section; 632. Second groove section; 64. Slider; 641. Follower pin; 65. Transmission rod; 651. Radial protrusion; 66. Compression spring; 67. Support frame;

[0037] 7. Unloading section; 71. Feeding end; 72. First pipe; 73. Second pipe; 74. Wheel; 741. Transmission gear; 75. Conveyor chain; 76. Conveyor disc; 77. Discharge end; 771. Unloading port;

[0038] 8. Rotation axis. Detailed Implementation

[0039] Other objects and advantages of the present invention will become clear by explaining the preferred embodiments of the present application below.

[0040] like Figures 1-2 As shown, a feeding device for preparing multi-element alloys includes a storage section 1, a distributing section 2, a mixing bin 3, a conveying section 4, a pulse valve 5, and a transmission section 6. This invention uniformly mixes the various elemental raw materials on the ground and then lifts and feeds the mixed material into an electric heating furnace. The main part of the feeding device is located at a low position away from the electric heating furnace, avoiding the adverse effects of high temperatures on the equipment and extending the service life of the feeding device.

[0041] like Figure 3 , Figure 5As shown, the storage part 1 has three storage bins 11 and discharge pipes 12 respectively communicating with the lower ends of the storage bins 11, the storage bins 11 store the materials to be mixed and discharge the materials through the discharge pipes 12. In some embodiments, the discharge pipes 12 are provided with rotatable discharge augers 13, through which uniform material flow can be formed at the outlets of the discharge pipes 12. The rotation of the discharge augers 13 can be driven by an electric motor or the like. By adjusting the rotation of the discharge augers 13, the speed of material conveying can be adjusted. In some embodiments, the top heights of the three storage bins 11 can be set to be different to facilitate identification and avoid mistakes.

[0042] In the present embodiment, the storage part 1, the distribution part 2 and the mixing bin 3 are sequentially arranged in the up-down direction and adjacent to each other, but in other embodiments, the storage part 1, the distribution part 2 and the mixing bin 3 can be sequentially arranged in the up-down direction and spaced apart by a certain distance or staggered in the horizontal direction according to needs.

[0043] The number of components such as the storage bins 11, the distribution gears 23, the conveying part 4, the pulse valve 5 and the transmission part 6 is not particularly limited in the present application and can be two, three, four or more, which can be designed adaptively according to the amount of materials to be added.

[0044] As shown in Figs. 1 and 2, Figure 4 , Figure 5 The distribution part 2 includes power elements 21, driving gears 22 and distribution gears 23, and all of them are three. The power elements 21 can be, for example, servo motors, hydraulic motors, pneumatic motors or the like. The housings of the power elements 21 are fixedly arranged, the output ends of the power elements 21 are in transmission connection with the driving gears 22, and the driving gears 22 are in transmission connection with the distribution gears 23. The rotation axes 8 of the distribution gears 23 are arranged vertically, and the distribution gears 23 are provided with annular distribution grooves 24 on the upper surfaces thereof; the distribution grooves 24 are located below the lower ends of the discharge pipes 12.

[0045] The power elements 21 drive the driving gears 22 to rotate, which further drive the distribution gears 23 to rotate, and as the distribution gears 23 rotate, the materials are discharged from the discharge pipes 12 into the distribution grooves 24.

[0046] In the present embodiment, the three distribution gears 23 are stacked and coaxially arranged in the up-down direction, and the pitch circle diameters of the distribution gears 23 sequentially increase from top to bottom, so that the distribution grooves 24 of the distribution gears 23 are not blocked by the upper distribution gears 23.

[0047] As shown in Figs. 1 and 2, Figure 3 and Figure 6As shown, in some embodiments, the mixing bin 3 is located below the distributing section 2 and is a space for mixing various materials. The mixing bin 3 may have a cylindrical structure, for example. A dust removal device similar to a bag filter can be installed on the top of the mixing bin 3 to allow airflow while preventing materials in the mixing bin 3 from flowing out with the airflow.

[0048] like Figures 6-8 As shown, in order to transport the material in the distribution trough 24 to the mixing bin 3, the present invention also includes multiple conveying units 4, each corresponding to a distribution gear 23. In this embodiment, three conveying units 4 are provided. Each conveying unit 4 has a suction port 421 and a discharge port 431. The suction port 421 is located on the upper side of the distribution trough 24; the discharge port 431 is connected to the mixing bin 3.

[0049] The conveying unit 4 includes a venturi tube 41, a suction pipe 42, and a discharge pipe 43; it should be noted that, Figure 8 The present invention provides an exemplary structure of a venturi tube 41, but those skilled in the art may also choose other types of venturi tubes 41 for material conveying in the present invention.

[0050] In this embodiment, the venturi tube 41 has a high-pressure gas inlet end 411, a material suction end 412, and a material discharge end 413. The high-pressure gas inlet end 411 is connected to a high-pressure gas source. The high-pressure gas source can be, for example, an air pump; the material suction end 412 is connected to one end of the suction pipe 42, and the other end of the suction pipe 42 is the suction port 421; the material discharge end 413 is connected to one end of the discharge pipe 43, and the other end of the discharge pipe 43 is the discharge port 431.

[0051] In this invention, the Venturi tube 41 utilizes high-pressure airflow to create negative pressure at the suction port 421 of the suction pipe 42, thereby drawing material from the distribution trough 24 and conveying it to the mixing bin 3. Through the coordinated action of the distribution section 2 and the conveying section 4, the material can be conveyed to the mixing bin 3 at a uniform flow rate, forming a uniform material flow with a certain velocity, which is beneficial for mixing different materials.

[0052] like Figure 9 and Figure 10 As shown, the pulse valve 5 includes a valve seat 51 and a valve stem 52, with the valve seat 51 fixedly installed. The air inlet 511 of the pulse valve 5 is connected to a high-pressure air source, and the air outlet 541 of the pulse valve 5 is connected to the mixing chamber 3. An airflow channel that can be opened / closed is formed between the air inlet 511 and the air outlet 541. The air outlet 541 injects pulse airflow into the mixing chamber 3. The pulse airflow acts on the material flow, causing the material to disperse and mix evenly.

[0053] The pulse valve 5 is communicated with the mixing bin 3 through the air outlet pipe 54, and the air outlet pipe 54 is tangent to the side wall of the mixing bin 3 in the extension direction of the pipe section close to the air outlet 541, so as to form a rotating air flow in the mixing bin 3, which is further conducive to the uniform mixing of the materials.

[0054] In some embodiments, as shown in Figure 6 The position where the material discharge port 431 is communicated with the mixing bin 3 is located above the position where the air outlet 541 of the pulse valve 5 is communicated with the mixing bin 3, so that the materials meet the air flow during the falling process after entering the mixing bin 3.

[0055] In other embodiments, as shown in Figure 13 The material discharge port 431 is located in the middle of the air outlet 541, that is, the material discharge port 431 of the material discharge pipe 43 is arranged inside the air outlet pipe 54, and the annular air outlet 541 is formed between the air outlet pipe 54 and the material discharge port 431. Based on the principle of jet flow, the air flow discharged from the air outlet 541 has an accelerating effect on the materials discharged from the material discharge pipe 43, which is further conducive to the uniform mixing of the materials.

[0056] Figure 6 、 Figure 9 and Figure 10 An embodiment of the transmission part 6 is shown, wherein the transmission part 6 comprises a transmission gear 61, a cam shaft 63 connected with the transmission gear 61, a sliding block 64 and a support frame 67.

[0057] Specifically, the transmission gear 61 is fixedly connected with a transmission shaft 62, and the transmission shaft 62 is further fixedly connected with the cam shaft 63. The transmission gear 61 is engaged with the material distribution gear 23, so that the cam shaft 63 can be driven to rotate through the material distribution gear 23.

[0058] The transmission shaft 62 is rotatably supported, and the transmission shaft 62 can be connected with the outer wall of the mixing bin 3 through a support structure, a bearing or the like.

[0059] The cam shaft 63 is provided with a cam groove 630 on the outer surface thereof, and the cam groove 630 comprises a first groove section 631 and a second groove section 632 which are sequentially connected end to end to form a complete circumferentially extending groove structure. The specific parameters such as the inclination angle and the longitudinal height of the first groove section 631 and the second groove section 632 can be adaptively designed by those skilled in the art according to the needs.

[0060] A support frame 67 is fixedly installed, and the support frame 67 can be fixedly connected to the mixing bin 3, for example. A vertically extending T-slot can be provided on the support frame 67, and the slider 64 can be slidably connected to this T-slot. A transmission rod 65 is fixed to the upper side of the slider 64, and a radial protrusion 651 is provided at the upper end of the transmission rod 65. A compression spring 66 is provided between the radial protrusion 651 and the upper end of the support frame 67. The compression spring 66 provides an elastic force to move the transmission rod 65 upward.

[0061] The valve stem 52 of the pulse valve 5 is located below the slider 64 and is fixedly connected to the slider 64. The follower pin 641 on the slider 64 is connected to the cam groove 630, and the airflow passage is periodically opened and closed as the cam shaft 63 rotates. In some embodiments, a spring is provided between the follower pin 641 and the slider 64 to provide an elastic force that moves the follower pin 641 toward the cam groove 630.

[0062] In this embodiment, the first groove segment 631 of the cam groove 630 extends vertically, and one end of the second groove segment 632 of the cam groove 630 is connected to the upper end of the first groove segment 631. Viewed horizontally, the other end of the second groove segment 632 of the cam groove 630 extends downwards at an angle. As the camshaft 63 travels along... Figure 9 When the follower pin 641 rotates in the R direction and is located in the first groove 631, the slider 64 moves upward under the elastic force of the compression spring 66. The valve stem 52 connected to the slider 64 drives the cone 53 at its lower end to move towards the sealing cone surface 513 on the valve seat 51 to close the airflow passage. When the follower pin 641 is located in the second groove 632, the camshaft 63 rotates clockwise when viewed from above. The second groove 632 of the cam groove 630 drives the follower pin 641 downward, thereby moving the cone 53 away from the sealing cone surface 513 to open the airflow passage.

[0063] like Figure 10 As shown, an inner cavity 512 is provided between the air inlet 511 and the sealing cone surface 513 in the valve seat 51. The valve stem 52 passes through the inner cavity 512. The inner cavity 512 is provided to facilitate the uniform distribution of airflow in the circumferential direction of the sealing cone surface 513.

[0064] In other embodiments, viewed horizontally, both the first groove segment 631 and the second groove segment 632 of the cam groove 630 are inclined. Therefore, without a compression spring 66, the pulse valve 5 can be opened or closed solely through the cam groove 630. Simultaneously, the opening and closing speed of the pulse valve 5 can be adjusted by matching the inclination angles of the first groove segment 631 and the second groove segment 632, thereby adjusting the rotational speed of the camshaft 63.

[0065] Figure 11The transmission structure of another embodiment is shown, wherein the transmission part 6 comprises a fixedly arranged support frame 67, a transmission rod 65 slidably connected with the support frame 67, the lower end of the transmission rod 65 is fixedly connected with the upper end of the valve rod 52, and a radial protruding part 651 is arranged at the connection; a compression spring 66 is arranged between the radial protruding part 651 and the support frame 67; the cam groove 630 comprises a first groove section 631 and a second groove section 632; the extension direction of the first groove section 631 is vertical; as the cam shaft 63 rotates along Figure 11 the R direction, when the driven pin 641 is located in the first groove section 631, the compression spring 66 pushes the valve rod 52 to drive the conical body 53 at the lower end thereof to move away from the sealing conical surface 513 on the valve seat 51, so as to quickly open the gas flow passage; when the driven pin 641 is located in the second groove section 632, the cam shaft 63 drives the slider 64 and the valve rod 52 to move upward, the conical body 53 and the sealing conical surface 513 are close to each other to close the gas flow passage, the embodiment improves the opening speed of the pulse valve 5, improves the intensity of the pulse gas flow, and further improves the uniformity of the material mixing.

[0066] As shown in Figure 1 , Figure 2 and Figure 12 , the feeding device further comprises a discharging part 7, the discharging part 7 comprises a feeding end 71, a discharging end 77 and a conveying chain 75. The height position of the discharging end 77 is higher than that of the feeding end 71, and the lower side of the discharging end 77 is provided with a discharging port 771, which is located on the upper side of the feeding port of the electric heating furnace during use. The feeding end 71 is located on the lower side of the mixing bin 3 and communicates with the mixing bin 3. The first pipeline 72 and the second pipeline 73 are arranged in parallel and are spaced apart between the feeding end 71 and the discharging end 77, and the first pipeline 72 and the second pipeline 73 serve to convey the material and the discharging end 77. The feeding end 71 and the discharging end 77 are each provided with a wheel disc 74, and the wheel disc 74 is provided with transmission teeth 741 arranged uniformly in the circumferential direction; the conveying chain 75 passes around the wheel discs 74 on the feeding end 71 and the discharging end 77 and passes through the first pipeline 72 and the second pipeline 73. The conveying chain 75 is provided with a plurality of uniformly arranged conveying discs 76; the transmission teeth 741 are engaged with the conveying discs 76.

[0067] During operation, the wheel discs 74 on the feeding end 71 and / or the discharging end 77 can be driven to rotate by a driving element such as an electric motor, which in turn drives the conveying discs 76 on the conveying chain 75 to move in the direction of the feeding end 71, the second pipeline 73 and the discharging end 77, thereby pushing the material to move in the direction of the discharging end 77. At the discharging port 771, the material loses support and falls from the discharging port 771 into the feeding port of the electric heating furnace, achieving the lifting and delivery of the material.

[0068] The feeding device for preparing multi-element alloy of the present application is described in detail with reference to the preferred technical solutions of the present application. However, it should be noted that any modification, modification and change can be made by those skilled in the art on the basis of the above disclosure without departing from the spirit of the present application. The present application includes the above specific embodiments and any equivalent form thereof.

Claims

1. A feeding device for preparing a multi-component alloy, characterized in that It comprises: a storage part (1) having a plurality of storage bins (11) and a plurality of discharge pipes (12) respectively communicating with the lower ends of the storage bins (11); a distribution part (2) comprising a plurality of distribution gears (23) arranged in a vertical direction and coaxially, and the pitch circle diameters of the plurality of distribution gears (23) are sequentially increased from top to bottom; the rotation axes (8) of the plurality of distribution gears (23) are vertically arranged, and an annular distribution groove (24) is arranged on the upper surface of each distribution gear (23); the distribution groove (24) of each distribution gear (23) is located below the outlet of the lower end of the corresponding discharge pipe (12); a mixing bin (3); a plurality of conveying parts (4) corresponding to the distribution gears (23); the conveying part (4) has a suction port (421) and a discharge port (431), the suction port (421) is located on the upper side of the distribution groove (24); the discharge port (431) communicates with the mixing bin (3); a pulse valve (5) comprising a valve seat (51) and a valve rod (52), the valve seat (51) is fixedly arranged; the inlet (511) of the pulse valve (5) communicates with a high-pressure gas source, the outlet (541) of the pulse valve (5) communicates with the mixing bin (3), and an openable / closable air flow passage is formed between the inlet (511) and the outlet (541), and the outlet (541) injects pulse air flow into the mixing bin (3); a transmission part (6) comprising a transmission gear (61) and a cam shaft (63), the transmission gear (61) is in transmission connection with the cam shaft (63) through a transmission shaft (62), and the transmission gear (61) is engaged with the lowermost distribution gear (23); the outer surface of the cam shaft (63) is provided with a cam groove (630); the valve rod (52) of the pulse valve (5) is fixedly connected with a sliding block (64), a driven pin (641) on the sliding block (64) is connected with the cam groove (630), and the air flow passage is periodically opened and closed with the rotation of the cam shaft (63); and a discharge part (7) comprising an inlet end (71) and an outlet end (77); the height position of the outlet end (77) is higher than that of the inlet end (71); the inlet end (71) is located on the lower side of the mixing bin (3) and communicates with the mixing bin (3); the lower side of the outlet end (77) is provided with a discharge port (771).

2. The feeding device for preparing multi-element alloy according to claim 1, wherein a rotatable discharge auger (13) is arranged in the discharge pipe (12).

3. The feeding device for preparing multi-element alloy according to claim 1, wherein the conveying part (4) comprises a Venturi tube (41), a suction pipe (42) and a discharge pipe (43); the Venturi tube (41) has a high-pressure gas inlet end (411), a material suction end (412) and a material discharge end (413). ​ ​ ​ The high-pressure gas inlet end (411) is communicated with a high-pressure gas source; The material suction end (412) is communicated with one end of a suction pipe (42), and the other end of the suction pipe (42) is the material suction port (421); The material discharge end (413) is communicated with one end of a discharge pipe (43), and the other end of the discharge pipe (43) is the material discharge port (431).

4. The feeding device for preparing multi-component alloy according to claim 3, wherein the pulse valve (5) is communicated with the mixing bin (3) through a gas outlet pipe (54); the material discharge port (431) is located above the position where the gas outlet (541) of the pulse valve (5) is communicated with the mixing bin (3); or the material discharge port (431) is arranged inside the gas outlet pipe (54), and a ring-shaped gas outlet (541) is formed between the gas outlet pipe (54) and the material discharge port (431).

5. The feeding device for preparing multi-component alloy according to claim 1, wherein the pulse valve (5) is communicated with the mixing bin (3) through a gas outlet pipe (54), and the extension direction of the part of the gas outlet pipe (54) close to the gas outlet (541) is tangent to the side wall of the mixing bin (3), so that a rotating gas flow is formed in the mixing bin (3).

6. The feeding device for preparing multi-component alloy according to claim 1, wherein the cam groove (630) comprises a first groove section (631) and a second groove section (632); as the cam shaft (63) rotates, when the driven pin (641) is located in the first groove section (631), the valve rod (52) drives the conical body (53) at the lower end thereof to move towards the sealing conical surface (513) on the valve seat (51) to close the gas flow passage; when the driven pin (641) is located in the second groove section (632), the conical body (53) moves away from the sealing conical surface (513) to open the gas flow passage.

7. The feeding device for preparing multi-component alloy according to claim 1, wherein the transmission part (6) comprises a fixed support frame (67), a transmission rod (65) which is slidably connected to the support frame (67), the lower end of the transmission rod (65) is fixedly connected to the upper end of the valve rod (52), and a radial protrusion (651) is arranged at the connection; a compression spring (66) is arranged between the radial protrusion (651) and the support frame (67); the cam groove (630) comprises a first groove section (631) and a second groove section (632); the extension direction of the first groove section (631) is vertical; as the cam shaft (63) rotates, when the driven pin (641) is located in the first groove section (631), the compression spring (66) pushes the valve rod (52) to drive the conical body (53) at the lower end thereof to move away from the sealing conical surface (513) on the valve seat (51) to rapidly open the gas flow passage. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ When the driven pin (641) is located in the second slot section (632), the camshaft (63) drives the slider (64) and the valve rod (52) to move upward, and the conical body (53) and the sealing conical surface (513) approach each other to close the airflow passage.

8. The multi-component alloy preparation feeding device according to claim 1, wherein, A spring is arranged between the driven pin (641) and the slider (64) to provide an elastic force for moving the driven pin (641) to the direction of the cam slot (630).

9. The multi-component alloy preparation feeding device according to any one of claims 1 to 8, wherein, The discharging part (7) comprises a conveying chain (75); First and second pipes (72, 73) are arranged in parallel and at intervals between the feeding end (71) and the discharging end (77); Wheels (74) are arranged in the feeding end (71) and the discharging end (77), and the wheels (74) are provided with transmission teeth (741) arranged uniformly in the circumferential direction; The conveying chain (75) passes around the wheels (74) in the feeding end (71) and the discharging end (77), and passes through the first and second pipes (72, 73); A plurality of conveying discs (76) are arranged uniformly on the conveying chain (75); The transmission teeth (741) are engaged with the conveying discs (76).

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