A feeder applied to high-temperature alloy smelting process

Abstract

The utility model relates to a kind of feeding device applied to high-temperature alloy smelting process, comprising: material heating system, including feeding bin and pipeline bin and the first valve connected between the two, pipeline bin is connected with first vacuum air pipe and heating part, pipeline bin is further connected with conveying pipeline, the conveying pipeline is equipped with second valve;Material conveying system, including bin room and the material bin of liftable setting in bin room, conveying pipeline is inserted into bin room, and corresponding to the top opening of material bin, the bottom of material bin is structured as open-close structure, bin room is connected with second vacuum air pipe;Heating smelting system, including smelting bin, top is equipped with the feeding port of joint in bin room bottom, and the inside of smelting bin is equipped with the inductive crucible corresponding to the position of feeding port.The utility model can control the oxygen content and moisture when secondary feeding enters inductive crucible, and orderly deliver the material after heating to inductive crucible, reduce steel liquid back spray phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of high-temperature alloy smelting technology, specifically to a feeder used in the high-temperature alloy smelting process. Background Technology

[0002] In the high-temperature alloy smelting process, for composite alloys containing both reactive and inactive metals, a two-stage feeding method is typically used. This involves first induction heating the inactive alloy components in the crucible, followed by induction heating of the reactive metal components. Traditional feeding methods involve directly conveying the metal into the crucible through a pipeline. If the material contains moisture, the low-temperature water encountering the high-temperature molten steel can cause splashing. Furthermore, the two-stage feeding process can easily introduce oxygen into the induction crucible, causing oxidation of the metal and consuming its effective components. It also increases the oxygen content in the final powder composition. Utility Model Content

[0003] The purpose of this invention is to provide a feeder for use in high-temperature alloy smelting processes, which can solve the technical problems mentioned in the background section.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a feeder for high-temperature alloy smelting processes, comprising a material heating system, a material conveying system, and a heating and melting system interconnected thereto. The material heating system includes a feeding hopper and a pipe hopper connected to its bottom. A first valve connects the feeding hopper and the pipe hopper. The pipe hopper is connected to a first vacuum extraction pipe and a heating element. The pipe hopper is also connected to a conveying pipe, which is equipped with a second valve. The material conveying system includes a hopper chamber and a liftable holding hopper disposed within the hopper chamber. The conveying pipe extends into the hopper chamber and corresponds to the top opening of the holding hopper. The bottom of the holding hopper is constructed as an openable structure. The hopper chamber is connected to a second vacuum extraction pipe. The heating and melting system includes a melting chamber. The top of the melting chamber is provided with a feeding port connected to the bottom of the hopper chamber, and the interior of the melting chamber is provided with an induction crucible corresponding to the position of the feeding port.

[0005] In a preferred embodiment, the pipe compartment includes a first pipe compartment, a second pipe compartment, and a baffle plate assembly distributed vertically, the baffle plate assembly being closable between the two; the conveying pipe is connected to the second pipe compartment and is inclined toward the material conveying system; inside the second pipe compartment, an inclined partition plate is connected at a position corresponding to the conveying pipe, the inclination angle of the partition plate being the same as that of the conveying pipe.

[0006] In a preferred embodiment, the second pipe compartment includes an upper compartment and a lower compartment formed by the partition plate, and the heating element is disposed in the lower compartment.

[0007] In a preferred embodiment, the first vacuum extraction pipe has a filter screen for blocking materials connected to one end connected to the pipe chamber.

[0008] In a preferred embodiment, the top of the silo chamber is connected via a flange interface to a drive mechanism for lifting and lowering the silo.

[0009] In a preferred embodiment, the bottom wall of the hopper is rotatably connected to multiple material blocking plates, which together form a conical structure, and the bottom of the material blocking plates is bound together by straps.

[0010] In a preferred embodiment, the bottom outer wall of the hopper is further fixedly connected with a plurality of limiting plates corresponding to the positions of the blocking plates. The limiting plates are vertically arranged and extend toward the direction of the heating and melting system.

[0011] In a preferred embodiment, a third valve is connected between the feed port and the bottom of the hopper chamber, and the inner diameter of the feed port is larger than the outer diameter of the hopper chamber.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The feeder provided by this utility model, which is used in the high-temperature alloy smelting process, is composed of a material heating system, a material conveying system, and a heating and smelting system. It can control the oxygen content entering the induction crucible during secondary feeding, thereby reducing the reactivity of the metal reaction. It can also evaporate the moisture in the material in advance, avoiding the entry of materials with high humidity into the induction crucible and causing molten steel to splash. By controlling the difference in vacuum degree in the three systems, the heated material is transported to the induction crucible in an orderly manner, reducing the phenomenon of molten steel backflow. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the feeder used in the high-temperature alloy smelting process in this embodiment of the present invention;

[0015] Figure 2 for Figure 1 Top view;

[0016] Figure 3 for Figure 2 Sectional view in the AA direction;

[0017] Figure 4 This is a schematic diagram of the material heating system in an embodiment of the present invention;

[0018] Figure 5 This is a schematic diagram of the material conveying system in an embodiment of the present invention;

[0019] Figure 6This is a schematic diagram of the structure of the drive mechanism and the hopper in an embodiment of the present invention;

[0020] Figure 7 This is a schematic diagram of the structure of the material storage bin in an embodiment of this utility model.

[0021] The meanings of the labels in the diagram are as follows:

[0022] 1. Material heating system; 11. Feeding bin; 12. Pipeline bin; 121. First pipeline bin; 122. Second pipeline bin; 1221. Upper bin; 1222. Lower bin; 1223. Partition plate; 123. Baffle plate assembly; 1231. Mounting housing; 1232. Baffle plate body; 1233. Cylinder; 13. Conveying pipeline; 14. First vacuum extraction pipe; 15. Heating element; 16. First valve; 171. Thermometer; 172. Vacuum gauge; 18. Second valve; 19. First vacuum pump;

[0023] 2. Material conveying system; 21. Silo chamber; 22. Storage hopper; 221. Lifting fixture; 222. Material blocking plate; 223. Tie strap; 224. Limiting plate; 23. Drive mechanism; 231. Fixed housing; 232. Rotating shaft; 233. First threaded reel; 234. Second threaded reel; 235. Gear motor; 24. Partition plate; 25. Second vacuum extraction pipe; 26. Second vacuum pump; 27. Inspection door; 281. Air replenishment valve; 282. Air rupture valve; 283. Pressure gauge;

[0024] 3. Heating and melting system; 31. Melting chamber; 311. Feed port; 32. Induction crucible; 33. Third valve; 34. Third vacuum extraction pipe; 35. Third vacuum pump. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] See Figures 1-3 This embodiment discloses a feeder used in a high-temperature alloy smelting process, including a material heating system 1, a material conveying system 2, and a heating and smelting system 3 that are interconnected.

[0028] The material heating system 1 includes a feeding bin 11 and a pipe bin 12 connected to its bottom end. The side end of the pipe bin 12 is connected to the material conveying system 2 through a conveying pipe 13. The pipe bin 12 is also connected to a first vacuum extraction pipe 14 and a heating element 15.

[0029] Specifically, in combination Figure 4 The discharge end of the feeding hopper 11 is constructed as a pipe structure that matches the shape of the pipe hopper 12. A first valve 16 is connected between the feeding hopper 11 and the pipe hopper 12 for material flow and on / off control. The pipe hopper 12 further includes a first pipe hopper 121 and a second pipe hopper 122 distributed vertically, and a baffle plate assembly 123 connected between the two. The baffle plate assembly 123 can connect or isolate the first pipe hopper 121 and the second pipe hopper 122 by actuation. More specifically, the baffle plate assembly 123 includes a mounting housing 1231 fixedly connected between the first pipe chamber 121 and the second pipe chamber 122. The mounting housing 1231 is formed by splicing two upper and lower rectangular housings. Two baffle plates 1232 that can be opened and closed are slidably connected inside the mounting housing 1231. The baffle plates 1232 are controlled by cylinders 1233 fixedly connected to both ends of the mounting housing 1231. The piston rod end of the cylinder 1233 extends into the mounting housing 1231 and is fixedly connected to one end of the baffle plate 1232.

[0030] More specifically, in combination Figure 3The conveying pipe 13 is connected to the second pipe chamber 122, which is inclined toward the material conveying system 2. Inside the second pipe chamber 122, at a position corresponding to the conveying pipe 13, there is a partition plate 1223 that is also inclined. The inclination angle of the partition plate 1223 is the same as that of the conveying pipe 13, so that the material in the second pipe chamber 122 can naturally sink into the material conveying system 2 under the action of gravity. It is understood that the conveying pipe 13 is connected to a second valve 18 for material flow and on / off control. In this embodiment, each valve is preferably a pneumatic valve, such as a pneumatic slide gate valve or a pneumatic butterfly valve.

[0031] The aforementioned partition plate 1223 further divides the second pipe chamber 122 into an upper chamber 1221 and a lower chamber 1222. The first vacuum extraction pipe 14 is constructed with two branch pipes, which are respectively connected to the upper chamber 1221 of the first pipe chamber 121 and the second pipe chamber 122. The other end is connected to a first vacuum pump 19 to achieve a vacuum atmosphere in the two chambers. To prevent the material from being sucked in, preferably, a filter screen is connected to one end of the branch pipe connected to the pipe chamber 12. The heating element 15 is set in the lower chamber 1222 of the second pipe chamber 122 and adopts an electrically controlled heating coil for material drying. Preferably, the first pipe chamber 121 and / or the upper chamber 1221 are also connected to a thermometer 171 and a vacuum gauge 172 for real-time monitoring of temperature and vacuum.

[0032] In practical application, firstly, open the first valve 16 and add the preheated material to the feeding hopper 11. The material will fall onto the closed baffle plate 1232. Close the first valve 16 and the second valve 18, open the valve of the vacuum extraction pipe, start the vacuum pump, and evacuate to 50 Pa to reduce the degree of induction reaction of the material in the pipe chamber 12. Then, turn on the heating coil to heat the material in the upper chamber 1221 of the first pipe chamber 121 and the second pipe chamber 122 to 100°C to remove most of the moisture in the material, thereby preventing the material with high humidity from entering the induction crucible 32 and causing molten steel to splash. After heating is completed, open the second valve 18, and the material enters the material conveying system 2 through the conveying pipe 13.

[0033] like Figure 5 , Figure 6 As shown, the material conveying system 2 includes a silo chamber 21 and a liftable hopper 22 disposed in the silo chamber 21. The conveying pipe 13 extends into the silo chamber 21 and corresponds to the top opening of the hopper 22.

[0034] The top of the silo chamber 21 is connected to a drive mechanism 23 for driving the lifting and lowering of the silo 22 via a flange interface, and the bottom of the silo chamber 21 is connected to the inlet of the heating and melting system 3 via a flange interface.

[0035] To ensure the airtightness of the silo chamber 21, a partition 24 is bolted between the drive mechanism 23 and the silo chamber 21. The output end of the drive mechanism 23 passes through the partition 24 and is connected to the top of the silo 22. The drive mechanism 23 adopts a linear conveying mechanism in the prior art. Specifically, it can adopt a high-precision screw drive structure or a slightly lower-precision sling drive structure. For example, in this embodiment, the drive mechanism 23 includes a fixed housing 231 and a rotating shaft 232 rotatably connected in the fixed housing 231. The rotating shaft 232 is fixedly connected to a first spool 233 on which rope is wound. The rotating shaft 232 is driven by a reduction motor 235 fixedly connected to the fixed housing 231. The drive mechanism 23 also includes a second spool 234 rotatably connected to the partition 24. One end of the rope is fixedly connected to the second spool 234, and the other end is wound around the second spool 234 and fixedly connected to the lifting device 221 on the top of the silo 22.

[0036] See Figure 7 The bottom of the hopper 22 is designed to be openable and closable. Specifically, multiple openable and closable baffle plates 222 are rotatably connected to the bottom wall of the hopper 22. The baffle plates 222 form a conical structure, and the bottom of the baffle plates 222 are secured by straps 223. For example, the straps 223 can be made of hemp fiber or cable ties. Under high temperature conditions, the straps 223 can be broken, thereby allowing the material in the hopper 22 to be discharged. To prevent the baffle plates 222 from shifting too much, several limiting plates 224 corresponding to the positions of the baffle plates 222 are also fixedly connected to the bottom outer wall of the hopper 22. These limiting plates 224 are vertically arranged and extend towards the heating and melting system 3.

[0037] The silo chamber 21 is connected to a second vacuum pump 26 via a second vacuum extraction pipe 25.

[0038] To facilitate work inside the silo chamber 21, the silo chamber 21 is also equipped with an openable and closable inspection door 27. This inspection door 27 is hinged to the wall of the silo chamber 21 and locked by a locking switch. Preferably, the wall of the silo chamber 21 is also connected to a gas supply valve 281, a venting valve 282, and a pressure gauge 283. The gas supply valve 281 is used to supply a certain amount of inert gas into the silo chamber 21, the venting valve 282 is used to balance the air pressure inside and outside the silo chamber 21 to facilitate opening the inspection door 27, and the pressure gauge 283 is used to detect the pressure inside the silo chamber 21.

[0039] Combination Figure 3The heating and melting system 3 includes a melting chamber 31. The top of the melting chamber 31 is provided with a feeding port 311 that connects to the bottom of the storage chamber 21. Inside the melting chamber 31, an induction crucible 32 is positioned corresponding to the feeding port 311. A third valve 33 connects the feeding port 311 to the bottom of the storage chamber 21, and the inner diameter of the feeding port 311 is larger than the outer diameter of the storage hopper 22. During material transport, the third valve 33 is opened, and the storage hopper 22, under the action of the reduction motor 235, descends through the feeding port 311 into the melting chamber 31. When it approaches the induction crucible 32, the securing strap 223 at the bottom of the storage hopper 22 is opened, and the material randomly enters the induction crucible 32.

[0040] The smelting chamber 31 is connected to a third vacuum pump 35 via a third vacuum extraction pipe 34, and is also connected to a viewing window, safety valve and other structures. The wall connection components of the smelting chamber 31 are existing technology, and their connection structure will not be described in detail here.

[0041] The feeder provided in this embodiment, used in the high-temperature alloy smelting process, consists of a material heating system 1, a material conveying system 2, and a heating and smelting system 3. During secondary feeding, the active metal is first fed into the material heating system 1, and a vacuum of about 50 Pa is drawn. Then, the heating element 15 is used for physical heating to evaporate the excess moisture in the material. At the same time, the material conveying system 2 is evacuated to about 30 Pa, and the heating and smelting system 3 is evacuated to about 10 Pa to transport the material to the material conveying system 2. Finally, the material conveying system 2 transports the required material to the induction crucible 32.

[0042] The feeder provided in this embodiment can control the oxygen content entering the induction crucible 32, thereby reducing the reactivity of the metal reaction. It can also evaporate the moisture in the material in advance, preventing the molten steel from splashing when the material with high humidity enters the induction crucible 32. By controlling the difference in vacuum degree in the three systems, the heated material is transported to the induction crucible 32 in an orderly manner, reducing the phenomenon of molten steel backflow. It can also reduce the oxygen content in the powder composition later.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A feeder used in high-temperature alloy smelting processes, characterized in that, Including interconnected ones: The material heating system (1) includes a feeding bin (11) and a pipe bin (12) connected to its bottom. A first valve (16) is connected between the feeding bin (11) and the pipe bin (12). The pipe bin (12) is connected to a first vacuum extraction pipe (14) and a heating element (15). The pipe bin (12) is also connected to a conveying pipe (13). The conveying pipe (13) is provided with a second valve (18). The material conveying system (2) includes a silo chamber (21) and a liftable hopper (22) installed in the silo chamber (21). The conveying pipe (13) extends into the silo chamber (21) and corresponds to the top opening of the hopper (22). The bottom of the hopper (22) is constructed as an openable structure. The silo chamber (21) is connected to a second vacuum extraction pipe (25). The heating and melting system (3) includes a melting chamber (31), the top of which is provided with a feeding port (311) that is connected to the bottom of the hopper chamber (21), and the interior of the melting chamber (31) is provided with an induction crucible (32) corresponding to the position of the feeding port (311).

2. The feeder for use in high-temperature alloy smelting processes according to claim 1, characterized in that, The pipe compartment (12) includes a first pipe compartment (121) and a second pipe compartment (122) distributed vertically, and a baffle plate assembly (123) connected between the two in an openable and closable manner; The conveying pipe (13) is connected to the second pipe compartment (122) and is inclined toward the material conveying system (2). Inside the second pipe compartment (122), there is an inclined partition plate (1223) connected at a position corresponding to the conveying pipe (13). The inclination angle of the partition plate (1223) is the same as that of the conveying pipe (13).

3. The feeder for use in high-temperature alloy smelting processes according to claim 2, characterized in that, The second pipe compartment (122) includes an upper compartment (1221) and a lower compartment (1222) formed by the partition plate (1223), and the heating element (15) is disposed in the lower compartment (1222).

4. The feeder for use in high-temperature alloy smelting processes according to claim 1, characterized in that, The first vacuum extraction pipe (14) has a filter screen for blocking materials connected to one end of the pipe chamber (12).

5. The feeder for use in high-temperature alloy smelting processes according to claim 1, characterized in that, The top of the hopper chamber (21) is connected to a drive mechanism (23) for driving the lifting and lowering of the hopper (22) via a flange interface.

6. The feeder for use in high-temperature alloy smelting processes according to claim 1, characterized in that, The bottom wall of the hopper (22) is rotatably connected to multiple material blocking plates (222), and each material blocking plate (222) is enclosed to form a conical structure. The bottom of the material blocking plate (222) is bound together by a strap (223).

7. The feeder for use in high-temperature alloy smelting processes according to claim 6, characterized in that, The bottom outer wall of the hopper (22) is also fixedly connected with a number of limiting plates (224) corresponding to the positions of the blocking plate (222). The limiting plates (224) are vertically arranged and extend towards the heating and melting system (3).

8. The feeder for use in high-temperature alloy smelting processes according to claim 1, characterized in that, A third valve (33) is connected between the feed port (311) and the bottom of the hopper (21), and the inner diameter of the feed port (311) is larger than the outer diameter of the hopper (22).

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