Vacuum atomizing pulverizer

Abstract

The application discloses a vacuum atomization powder making furnace and relates to the technical field of powder making equipment. The vacuum atomization powder making furnace comprises a shell which is assembled on the outer wall of a furnace body. Guide grooves are formed in the left and right sides of the inner cavity of the shell. Sliders which slide up and down are embedded in the inner cavities of the guide grooves. The inner sides of the sliders extend out of the guide grooves and are provided with moving seats. The device is designed in an integrated structure. The operation mode of manually replacing a material cylinder or a pneumatic clamping jaw according to the shape of the material is abandoned. The same structure can be compatible with two kinds of material feeding. Components do not need to be frequently disassembled and assembled. Production interruption is avoided. The feeding mode can be flexibly switched. The system structure does not need to be adjusted. The device is suitable for various production scenes. The working condition adaptability is improved. The time and labor costs are reduced. A controllable unloading mechanism is designed for the broken material. The unloading mechanism replaces the cotton fiber rope binding and discharging mode. Impurities generated by the high-temperature melting of the cotton fiber rope into the metal melt are eliminated. Unloading obstruction or premature leakage of the broken material is avoided. Precise feeding is realized.

Description

Technical Field

[0001] This invention relates to the field of powder making equipment technology, specifically a vacuum atomizing powder making furnace. Background Technology

[0002] In the field of modern materials preparation, vacuum atomization powder preparation technology is widely used in key industries such as aerospace, high-end equipment manufacturing, and biomedicine due to its ability to prepare high-purity, fine-grained, and spherical metal powders. As the core equipment of this technology, the performance of the vacuum atomization powder preparation furnace directly determines the quality and production efficiency of the metal powder.

[0003] Existing vacuum atomizing powder pulverizers typically operate according to a pre-set production process, such as... Figure 1 As shown, the system includes a furnace cover lifting system 31, a melting chamber furnace cover 32, a melting system 33, a vacuum system 34, and a secondary feeding system 35. During operation, the furnace cover 32 is first opened via the furnace cover lifting system 31, and metal material is loaded into the melting system 33. Then, the furnace cover is closed, and a vacuum environment is created using the vacuum system 34. Finally, the melting system 33 is powered by the melting power system, causing the metal material to melt into a liquid state. In actual production, to flexibly adjust the composition of the molten metal, replenish material losses, or achieve precise control of specific component ratios, a secondary feeding operation is often required after the initial melting of the metal material. The rationality and stability of the secondary feeding process are crucial to the entire powder production process.

[0004] Currently, there are two main types of secondary feeding components: For secondary feeding of small fragments, workers use a feeding cylinder to load the material. The opening and closing gate at the bottom of the cylinder is secured with cotton fiber rope. When the cylinder moves down into the melting furnace near the heating crucible, the high temperature around the crucible melts the cotton fiber rope, causing the bottom of the cylinder to open automatically, allowing the fragments to fall into the crucible and completing the feeding process. For secondary feeding of bar stock, pneumatic grippers are used to hold and fix the bar stock and move it down into the crucible to complete the feeding. However, this type of secondary feeding structure and operation method has significant drawbacks in practical applications, severely restricting production efficiency and powder quality. Specific problems are as follows:

[0005] Firstly, the switching of feeding components is cumbersome, which seriously affects the continuity of production. Because the existing feeding system has an independent assembly structure for the material cylinder and pneumatic gripper, and the appropriate component must be manually selected according to the shape of the material to be added (crushed material or bar stock), when switching material shapes, the operator must first remove the material cylinder or gripper already assembled inside the feeding cylinder and then reinstall the appropriate component. The entire switching process is not only cumbersome and time-consuming, but also affects the overall production efficiency.

[0006] Secondly, the material cylinder discharging mode is poor in stability. The existing secondary feeding for the crushed material adopts the material cylinder as a bearing component. When the material cylinder is lowered to the vicinity of the heating crucible in the smelting furnace along with the feeding mechanism, the cotton fiber rope is roasted by the high temperature around the crucible, the bottom of the material cylinder is automatically opened, the crushed material falls into the crucible to complete the feeding. If the cotton fiber rope is melted too early (such as too early contact with the high temperature area during the lowering of the material cylinder), the crushed material will be leaked too early before reaching the top of the crucible, and part of the crushed material may be attached to the surface of the high temperature component in the furnace, which not only causes waste of material, but also may cause impurities formed by the high temperature melting of the crushed material to enter the subsequent molten liquid or atomization system, affecting the purity of the metal powder.

[0007] In view of the above, a vacuum atomization powder production furnace is developed to improve the above technical problems. SUMMARY

[0008] The purpose of the present application is to provide a vacuum atomization powder production furnace to solve the problems raised in the background art.

[0009] To achieve the above purpose, the present application provides the following technical scheme: a vacuum atomization powder production furnace, comprising a shell, the shell is assembled on the outer wall of the furnace cover lifting system and the smelting chamber furnace cover, the inner cavity of the shell is provided with a guide groove on the left and right sides, the inner cavity of the guide groove is embedded with a sliding block which slides up and down, the inner side of the sliding block extends out of the guide groove and is provided with a moving seat, the bottom end of the moving seat is provided with a material cylinder, the top end of the shell is provided with a motor, the lower surface output end of the motor is provided with one end of a screw rod, the other end of the screw rod extends into the shell and is screwed into the inner cavity of the moving seat, the screw rod and the moving seat are connected with each other by threads, the outer wall of the material cylinder is provided with a first storage cavity on both sides, the bottom end of the material cylinder is provided with a second storage cavity, the inner wall circumference of the material cylinder is provided with an annular base, the outer wall of the annular base is sleeved with a base, the top end of the base is provided with a lifting mechanism, the lifting mechanism comprises a gear ring, the gear ring is arranged at the top end of the base, the inner wall circumference of the material cylinder is rotatably connected with a driving rod, the outer wall of the driving rod is provided with a gear, the gear and the gear ring are connected with each other by meshing, one end of a first supporting rod is arranged on the inner side of the driving rod, and the other end of the first supporting rod is rotatably connected with a second supporting rod, one end of the second supporting rod is rotatably connected with a bottom plate, and the bottom end of the bottom plate is provided with a clamping mechanism.

[0010] Preferably, the number of driving rods is four, and the four driving rods are distributed on the inner wall of the material cylinder at an interval of 90 degrees.

[0011] Preferably, the shape of the bottom plate is arranged in the shape of a "cross".

[0012] Preferably, the clamping mechanism comprises a boom, a connecting rod, a movable plate, a clamping plate and a fixed rod, the number of the movable plates is four, the front and rear movable plates are a group, the left and right groups of movable plates are rotationally connected to the outer wall of the connecting rod, the number of the clamping plates is two, the two clamping plates are rotationally connected to the outer wall of the connecting rod, a plurality of connecting rods are arranged at the connecting portions between the movable plates and the clamping plates, and the outer wall of the clamping plate is rotationally connected with the fixed rod.

[0013] Preferably, the fixed rod is matched with the connecting rod.

[0014] Preferably, the bottom end of the base is provided with a discharging mechanism, the discharging mechanism comprises a discharging plate, the discharging plate is rotationally connected to the inner wall of the barrel, one end of the discharging plate is provided with a counterweight, the outer wall of the base is provided with a sleeve, the outer wall of the sleeve is provided with a discharging port, the discharging port and the discharging plate are matched, the top end of the sleeve is provided with a support, the top end of the support is provided with an annular plate, the inner wall of the shell is provided with a guide rail, one end of the guide block is embedded in the inner cavity of the guide rail, and the other end of the guide block extends out of the guide rail and is fixedly connected to the inner wall of the annular plate.

[0015] Preferably, the inner wall of the first storage cavity is inclined at the bottom end, the lower surface of the barrel is provided with an adjusting space, and the counterweight is arranged in the adjusting space.

[0016] Preferably, the track of the guide rail is arc-shaped.

[0017] Preferably, the guide rail is matched with the guide groove.

[0018] The vacuum atomizing powder production furnace provided by the application has the beneficial effects that:

[0019] 1. No need to replace the feeding component, greatly improving the production efficiency and working condition adaptability

[0020] The application discards the existing operation mode of manually replacing the barrel or pneumatic clamping jaw according to the material form (broken material or bar material), and realizes compatible feeding of broken material and bar material in the same structure through integrated structure design. On the one hand, the barrel or clamping jaw does not need to be frequently removed from the inside of the cylinder body, replaced and then moved back to the original position, thereby saving the cumbersome steps of disassembling and assembling the components and effectively avoiding production interruption caused by component switching. On the other hand, the feeding material form can be flexibly switched according to production needs, without the need to adjust the structure of the feeding system, which is suitable for various production scenes and greatly improves the adaptability of the equipment to different production conditions, thereby reducing the time cost and labor cost caused by working condition switching.

[0021] 2. Abandoning cotton fiber rope binding and discharging, completely eliminating quality hidden dangers and operation risks

[0022] The present application is directed to the controllable unloading mechanism designed for the secondary feeding of the crushed materials, which replaces the existing mode of relying on the cotton fiber rope to bind the bottom of the material cylinder and realizing the discharge by high-temperature melting, not only avoids the ash and other impurities generated by the melting of the cotton fiber rope under high temperature into the metal melt, completely solves the problem of the decrease of the purity of the metal powder and the appearance of the inclusion defects caused by the introduction of impurities, but also effectively avoids the problems of the unloading blockage caused by the incomplete melting of the existing cotton fiber rope and the early leakage of the crushed materials caused by the early melting of the cotton fiber rope, the accurate material feeding and the reduction of material waste. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a background technical structure diagram of the present application;

[0024] Figure 2 It is a structure diagram of the present application;

[0025] Figure 3 It is a structure diagram of the moving seat of the present application;

[0026] Figure 4 It is a structure diagram of the moving seat after moving down of the present application;

[0027] Figure 5 It is a structure diagram of the B place of the present application;

[0028] Figure 6 It is a structure diagram of the bottom plate rising of the present application;

[0029] Figure 7 It is a structure diagram of the bottom plate during moving down of the present application;

[0030] Figure 8 It is a structure diagram of the bottom plate descending of the present application;

[0031] Figure 9 It is a structure diagram of the clamping mechanism of the present application;

[0032] Figure 10 It is a structure diagram of the unloading plate of the present application;

[0033] Figure 11 It is a structure diagram of the unloading plate after opening of the present application;

[0034] Figure 12 It is a structure diagram of the A place of the present application;

[0035] Figure 13 It is a structure diagram of the guide rail of the present application;

[0036] Figure 14 It is a structure diagram of the unloading port of the present application.

[0037] In the figure: 1, shell, 2, guide groove, 3, sliding block, 4, moving seat, 5, barrel, 6, motor, 7, screw, 8, first storage cavity, 9, second storage cavity, 10, annular base, 11, base, 12, gear ring, 13, drive rod, 14, gear, 15, first support rod, 16, second support rod, 17, bottom plate, 18, boom, 19, connecting rod, 20, movable plate, 21, clamping plate, 22, fixed rod, 23, discharge plate, 24, counterweight, 25, sleeve, 26, discharge port, 27, support, 28, annular plate, 29, guide rail, 30, guide block, 31, furnace cover lifting system, 32, smelting chamber furnace cover, 33, smelting system, 34, vacuum system, 35, secondary feeding system. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0039] Please refer to Figures 2-14 The present application provides a technical solution: a vacuum atomization powder making furnace, comprising a shell 1, the shell 1 is assembled on the outer wall of the furnace cover lifting system and the smelting chamber furnace cover, the inner cavity of the shell 1 is provided with guide grooves 2 on the left and right sides, the inner cavity of the guide groove 2 is embedded with sliding blocks 3 sliding up and down, the inner side of the sliding block 3 extends out of the guide groove 2 and is provided with a moving seat 4, the bottom end of the moving seat 4 is provided with a barrel 5, the top end of the shell 1 is provided with a motor 6, the lower surface output end of the motor 6 is provided with one end of a screw 7, the other end of the screw 7 extends into the shell 1 and is screwed into the inner cavity of the moving seat 4, the screw 7 and the moving seat 4 are connected with each other by threads, the outer wall of the barrel 5 is provided with a first storage cavity 8 on both sides, the bottom end of the barrel 5 is provided with a second storage cavity 9, the inner wall of the barrel 5 is provided with an annular base 10, the outer wall of the annular base 10 is sleeved with a base 11, the top end of the base 11 is provided with a lifting mechanism, the lifting mechanism comprises a gear ring 12, the gear ring 12 is arranged at the top end of the base 11, the inner wall of the barrel 5 is circumferentially provided with drive rods 13, the outer wall of the drive rod 13 is provided with a gear 14, the gear 14 and the gear ring 12 are connected with each other, the inner side of the drive rod 13 is provided with one end of a first support rod 15, the other end of the first support rod 15 is rotatably connected with a second support rod 16, one end of the second support rod 16 is rotatably connected with a bottom plate 17, the bottom end of the bottom plate 17 is provided with a clamping mechanism.

[0040] As a preferred solution, further, the number of drive rods 13 is four, and the four drive rods 13 are circumferentially distributed on the inner wall of the barrel 5 at intervals of 90 degrees.

[0041] As a preferred scheme, the base plate 17 is further shaped as a "cross".

[0042] As a preferred scheme, the clamping mechanism comprises a boom 18, a connecting rod 19, four movable plates 20, two clamping plates 21 and a fixing rod 22, the front and rear two movable plates 20 are a group, the left and right two groups of movable plates 20 are respectively rotationally connected to the outer wall of the connecting rod 19, the two clamping plates 21 are respectively rotationally connected to the outer wall of the connecting rod 19, a plurality of connecting rods 19 are respectively arranged at the connecting portions between the movable plates 20 and the clamping plates 21, and the outer wall of the clamping plate 21 is rotationally connected with the fixing rod 22.

[0043] As a preferred scheme, the fixing rod 22 is matched with the connecting rod 19.

[0044] As a preferred scheme, the base 11 is provided with a discharging mechanism at the bottom end, the discharging mechanism comprises a discharging plate 23, the discharging plate 23 is rotationally connected to the inner wall of the barrel 5, one end of the discharging plate 23 is provided with a counterweight 24, the outer wall of the base 11 is provided with a sleeve 25, the outer wall of the sleeve 25 is provided with a discharging port 26, the discharging port 26 is matched with the discharging plate 23, the top end of the sleeve 25 is provided with a support 27, the top end of the support 27 is provided with an annular plate 28, the inner wall of the shell 1 is provided with a guide rail 29, one end of a guide block 30 is embedded in the inner cavity of the guide rail 29, and the other end of the guide block 30 extends out of the guide rail 29 and is fixedly connected to the inner wall of the annular plate 28.

[0045] As a preferred scheme, the inner wall of the first storage cavity 8 is inclined at the bottom end, the lower surface of the barrel 5 is provided with an adjusting space, and the counterweight 24 is arranged in the adjusting space.

[0046] As a preferred scheme, the guide rail 29 is arc-shaped.

[0047] As a preferred scheme, the guide rail 29 is matched with the guide groove 2.

[0048] Through the person skilled in the art, all electrical components in the case are connected to the power supply through wires, and appropriate controllers should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should be referred to the working principle below to complete the electrical connection in the order of the working sequence of each electrical component. The detailed connection means is a known technology in the art. The working principle and process are mainly introduced below, and the electrical control is not described. The specific work is as follows:

[0049] In operation, first, the furnace cover lifting system 31 opens the smelting chamber furnace cover 32, and the metal material (crushed material or bar material) is first filled, that is, the metal material is added to the smelting system 33, then the furnace cover is closed and a vacuum environment is established by the vacuum system 34, and the smelting power supply system is used to supply power to the smelting system 33, so that the metal material is melted into a liquid state. Then, the smelting inlet tilting system controls the tilting of the smelting system, and the liquid steel is poured into the holding crucible of the holding system assembly. At the same time, the holding power supply system is started, and the holding system is powered through the holding inlet device to maintain the crucible temperature and ensure the liquidity of the steel liquid. The holding crucible has a flow guide nozzle at the lower end, and a spray disc system is provided around it. The high-pressure gas inlet system is started to send gas to the spray disc, and the spray disc sprays high-pressure gas at a certain angle and flow rate to form a gas flow field. When the steel liquid flows out of the flow guide nozzle, it is broken into small droplets by the high-pressure gas, and the droplets enter the atomizing chamber and solidify into powder under the action of the vacuum environment and the cooling pipeline. The powder enters the cyclone dust collection system with the gas flow, and under the guidance of negative pressure, it is separated and filtered through multiple stages to collect different size powders. During the above operation, the operator confirms that the metal material in the furnace has been consumed through the observation window, and then prepares to perform secondary feeding, and the operation steps are as follows:

[0050] The motor 6 is started, which drives the screw rod 7 to rotate. The rotating screw rod 7 drives the moving seat 4 connected with it to move upwards or downwards, and the moving seat 4 drives the barrel 5 and all the structural parts on the barrel 5 to move upwards or downwards. When the sleeve 25, the bracket 27 and the annular plate 28 are moved upwards or downwards together with the barrel 5, the guide block 30 is embedded in the inner cavity of the guide rail 29 at one end, and the other end of the guide block 30 is fixedly connected to the inner wall of the annular plate 28. Therefore, when the annular plate 28 moves up and down, the guide rail 29 will drive the annular plate 28, the bracket 27, the sleeve 25, the base 11 and the gear ring 12 to rotate according to the trajectory of the guide block 30 (the trajectory is arc-shaped). The rotating gear ring 12 drives the gear 14 engaged with it to rotate, and the rotating drive rod 13 drives the bottom plate 17 and the clamping mechanism to move upwards or downwards through the transmission of the first branch rod 15 and the second branch rod 16;

[0051] In the secondary feeding, first, the vacuum plug valve on the furnace body is closed, and the shell 1 is moved to the appropriate position by the furnace cover lifting system. When the crushed material needs to be added, the barrel 5 is moved downward out of the shell 1, and the distance of the downward movement of the barrel 5 needs to ensure that the discharge port 26 is misaligned with the discharge plate 23. At this time, the crushed material is poured into the first storage cavity 8. After completion, the barrel 5 is moved upward to reset. Then the shell 1 is moved to the furnace body and is connected with each other. The shell 1 is vacuumized by the external vacuum system. The vacuum plug valve is opened. The barrel 5 is moved downward. During the downward movement of the barrel 5, the sleeve 25 will gradually rotate. When the barrel 5 is moved to the appropriate position height, the discharge port 26 will coincide with the discharge plate 23. At this time, the crushed material in the first storage cavity 8 will be discharged into the crucible by gravity to realize precise feeding and reduce material waste.

[0052] The device is designed by an integrated structure, which abandons the existing operation mode of manually replacing the barrel or pneumatic clamping jaw according to the material form (crushed material or rod material). The same structure can be compatible with two material feeding. It does not need to disassemble and assemble the components frequently, avoids production interruption, can flexibly switch the feeding mode, does not need to adjust the system structure, adapts to various production scenes, improves the working condition adaptability and reduces the time and labor cost. At the same time, the controllable discharge mechanism is designed for the crushed material, which replaces the cotton fiber rope binding and discharging mode. It can prevent the impurities produced by the melting of the cotton fiber rope from entering the metal melt, avoid the discharge blockage or the crushed material leakage, realize precise feeding, and reduce material waste.

[0053] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A vacuum atomizing powder-making furnace, characterized in that: The system includes a housing (1), which is mounted on the outer wall of the furnace cover lifting system and the furnace cover of the smelting chamber. Guide grooves (2) are provided on both the left and right sides of the inner cavity of the housing (1). Sliding blocks (3) that slide up and down are embedded in the inner cavity of the guide grooves (2). The inner side of the sliding blocks (3) extends out of the guide grooves (2) and is equipped with a moving seat (4). A material cylinder (5) is provided at the bottom end of the moving seat (4). A motor (6) is installed at the top of the housing (1). One end of a screw (7) is installed at the output end of the lower surface of the motor (6). The other end of the screw (7) extends into the housing (1) and is screwed into the inner cavity of the moving seat (4). The screw (7) and the moving seat (4) are threaded together. A first storage cavity (8) is provided on both sides of the outer wall of the material cylinder (5). A second storage cavity is provided at the bottom end of the material cylinder (5). The inner wall of the cylinder (5) is provided with an annular base (10), and a base (11) is sleeved on the outer wall of the annular base (10). A lifting mechanism is installed at the top of the base (11). The lifting mechanism includes a toothed ring (12). The toothed ring (12) is set at the top of the base (11). The inner wall of the cylinder (5) is rotatably connected with a drive rod (13). A gear (14) is installed on the outer wall of the drive rod (13). The gear (14) and the toothed ring (12) are meshed with each other. One end of the first support rod (15) is installed on the inner side of the drive rod (13), and the other end of the first support rod (15) is rotatably connected to a second support rod (16). One end of the second support rod (16) is rotatably connected to a base plate (17). A clamping mechanism is installed at the bottom end of the base plate (17).

2. The vacuum atomizing powder-making furnace according to claim 1, characterized in that: The number of drive rods (13) is four, and the four drive rods (13) are distributed on the inner wall of the barrel (5) at 90-degree intervals.

3. The vacuum atomizing powder-making furnace according to claim 1, characterized in that: The base plate (17) is arranged in a cross shape.

4. The vacuum atomizing powder pulverizer according to claim 1, characterized in that: The clamping mechanism includes a lifting rod (18), a connecting rod (19), a movable plate (20), a clamping plate (21), and a fixed rod (22). There are four movable plates (20), with two movable plates (20) in front and behind forming a group. The two groups of movable plates (20) in the left and right are rotatably connected to the outer wall of the connecting rod (19). There are two clamping plates (21), with two clamping plates (21) rotatably connected to the outer wall of the connecting rod (19). Multiple connecting rods (19) are respectively set at the connection between the movable plate (20) and the clamping plate (21). A fixed rod (22) is rotatably connected to the outer wall of the clamping plate (21).

5. A vacuum atomizing powder-making furnace according to claim 4, characterized in that: The fixing rod (22) is matched with the connecting rod (19).

6. A vacuum atomizing powder-making furnace according to claim 1, characterized in that: The base (11) is equipped with a feeding mechanism at its bottom end. The feeding mechanism includes a discharge plate (23). The discharge plate (23) is rotatably connected to the inner wall of the material cylinder (5). A counterweight (24) is provided at one end of the discharge plate (23). A sleeve (25) is provided on the outer wall of the base (11). A discharge port (26) is provided on the outer wall of the sleeve (25). The discharge port (26) and the discharge plate (23) are matched. A bracket (27) is provided at the top of the sleeve (25). An annular plate (28) is provided at the top of the bracket (27). A guide rail (29) is provided on the inner wall of the housing (1). One end of a guide block (30) is embedded in the inner cavity of the guide rail (29). The other end of the guide block (30) extends out of the guide rail (29) and is fixedly connected to the inner wall of the annular plate (28).

7. A vacuum atomizing powder-making furnace according to claim 6, characterized in that: The bottom of the inner wall of the first storage chamber (8) is inclined, and the lower surface of the material cylinder (5) is provided with an adjustment space, and the counterweight (24) is placed in the adjustment space.

8. A vacuum atomizing powder-making furnace according to claim 6, characterized in that: The guide rail (29) is set in an arc shape.

9. A vacuum atomizing powder-making furnace according to claim 6, characterized in that: The guide rail (29) is matched with the guide groove (2).

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