A method for producing high-boron low-aluminum ferroboron alloy

Abstract

The present invention relates to the field of alloy preparation technology, and in particular to a method for producing a high-boron, low-aluminum, ferroboron alloy, comprising a raw material mixing barrel having a feed port and a discharge port respectively formed at both ends; and further comprising a barrel opening and closing group, the barrel opening and closing group being arranged in the raw material mixing barrel, the barrel opening and closing group comprising two guide pipes respectively arranged at the feed port and the discharge port and installed in the raw material mixing barrel, the guide pipes having two spiral guide grooves symmetrically formed on the inner annular surface, the two spiral guide grooves being connected by an annular groove at one end near the middle of the raw material mixing barrel. The barrel opening and closing group used in the present invention cooperates with a drive unit to realize the automatic opening of the inlet sealing portion of the raw material mixing barrel when loading, the closing of the outlet sealing portion and the inlet sealing cover during stirring, and the automatic opening of the outlet sealing portion when dropping, thereby effectively improving the degree of automation of the equipment, and being realized by only one drive, reducing manpower input and lowering costs.

Description

Technical Field

[0001] The present invention relates to the technical field of alloy preparation, and in particular to a method for preparing a high-boron, low-aluminum, ferroboron alloy. Background Art

[0002] High-boron, low-aluminum ferroboron alloy is a special alloy with iron as the matrix, boron as the main alloying element, and strictly controlled aluminum content. It has the advantages of high hardness, excellent wear resistance, low aluminum control and good neutron absorption ability. It is widely used in technical fields such as wear-resistant surfacing welding wire, cast wear-resistant alloys, neutron absorption materials, and nuclear waste treatment.

[0003] Current high-boron, low-aluminum, ferroboron alloy products generally include steps such as weighing ingredients, mixing, smelting, unloading, cooling, finishing, sorting, selection, packaging and warehousing. Among them, mixing and stirring raw materials is one of the most important steps. The uniformity of raw material mixing directly affects the stability of alloy components, smelting efficiency and final product quality. Currently, raw materials are usually mixed using a drum mixer. The drum mixer can effectively mix the raw materials with good mixing effect. However, the drum mixer usually adopts a manual method in the process of inputting and discharging raw materials, which increases the manpower input and cannot achieve automatic continuous mixing. At the same time, some raw materials adhere to the drum mixer during the discharge process, and the discharge effect is not ideal. Summary of the Invention

[0004] Based on this, it is necessary to provide a method for preparing a high-boron, low-aluminum ferroboron alloy that can solve the problems existing when mixing the above-mentioned raw materials.

[0005] In order to achieve the above object, the present invention adopts the following technical solution, a method for preparing a high-boron low-aluminum boron iron alloy, the specific method is as follows:

[0006] S1. Weighing ingredients: Weigh and mix the required raw materials according to the formula ratio.

[0007] S2. Mixing: Use a powerful mixer to evenly mix the weighed raw materials.

[0008] S3. Smelting: Add the mixed raw materials into the smelting furnace for smelting.

[0009] S4. Taking out of the furnace: When the alloy composition and temperature in the furnace reach the specified requirements, the smelted high-boron low-aluminum ferroboron alloy liquid is taken out of the furnace and flows into a receiving container.

[0010] S5. Cooling: Cooling the high-boron low-aluminum ferro-boron alloy liquid in the receiving container to obtain a high-boron low-aluminum ferro-boron alloy block.

[0011] Among them, S2 is completed with a mixing device for high-boron low-aluminum ferro-boron alloy raw materials, and the mixing device for high-boron low-aluminum ferro-boron alloy raw materials includes: a raw material mixing barrel with a feed port and a discharge port respectively opened at both ends.

[0012] It also includes a barrel mouth opening and closing group, which is arranged in the raw material mixing barrel. The barrel mouth opening and closing group includes two guide tubes respectively arranged at the feed port and the discharge port and installed in the raw material mixing barrel. Two spiral guide grooves are symmetrically provided on the inner annular surface of the guide tube. The two spiral guide grooves are connected by an annular groove at one end close to the middle of the raw material mixing barrel. The spiral directions of the spiral guide grooves in the upper and lower guide tubes are opposite. The two guide tubes are respectively provided with an inlet sealing part and an outlet sealing part that cooperate with the corresponding spiral guide grooves.

[0013] The barrel opening and closing group also includes a transmission part that is connected to the inlet sealing part and the outlet sealing part at the same time. The transmission part simultaneously controls the inlet sealing part and the outlet sealing part to meet the following requirements: opening the feed port and sealing the discharge port when loading; sealing the feed port and the discharge port when stirring; and sealing the feed port and opening the discharge port when discharging.

[0014] Wall scraping parts for scraping off the raw materials attached to the inner wall of the raw material mixing barrel are symmetrically arranged on the upper and lower sides of the transmission part.

[0015] Preferably, the inlet sealing part includes a lifting branch chain arranged in the corresponding guide tube, and the end of the lifting branch chain close to the feed port is connected to an inlet sealing cover for closing the feed port, the lifting branch chain is connected to a pushing branch chain, and the outside of the pushing branch chain is symmetrically provided with a plug-in branch chain connected to the corresponding guide tube.

[0016] Preferably, the lifting branch chain includes a lifting rod which is arranged in a corresponding guide tube and has a placement cavity at one end close to the inlet sealing cover, a telescopic spring is installed in the placement cavity, and a connecting rotating plate which is rotatably connected to the inlet sealing cover is installed at the end of the telescopic spring away from the lifting rod, a spline sliding hole is opened in the middle of the lifting rod, and a spline rod is slidably connected in the spline sliding hole.

[0017] Preferably, the lifting branch chain also includes a sliding groove opened on the outer ring surface of the lifting rod away from the end of the inlet sealing cover, a lifting block is slidably connected in the sliding groove, a sliding block is installed on the lifting block and slides with the spiral guide groove, and an extrusion spring is installed between the lifting block and the sliding groove.

[0018] Preferably, the pushing and squeezing branch chain includes a limiting tube that is slidably sleeved on the outer surface of the lifting rod and fixedly connected to the inlet sealing cover. Two limiting through holes are symmetrically provided at one end of the limiting tube close to the inlet sealing cover. A receiving groove is provided on the wall of the limiting through hole. A pushing block is slidably connected in the limiting through hole. A sliding protrusion located in the receiving groove is integrally formed on the pushing block, and a reset spring is installed between the sliding protrusion and the receiving groove.

[0019] Preferably, the plug-in branch chain 1 includes a placement countersunk hole opened in the guide tube and located corresponding to the limiting through hole, a plug-in block is slidably connected in the placement countersunk hole, and a push spring is installed between the plug-in block and the placement countersunk hole.

[0020] Preferably, the outlet sealing part includes a lifting branch chain 2 arranged in the corresponding guide tube, and the end of the lifting branch chain 2 close to the discharge port is connected to an outlet sealing cover for closing the discharge port, and the lifting branch chain 2 is connected to the pushing branch chain 2, and the outer side of the pushing branch chain 2 is symmetrically provided with a plug-in branch chain 2 connected to the corresponding guide tube.

[0021] Preferably, the transmission part includes a support frame installed in the raw material mixing barrel, and four evenly distributed transmission rods are rotatably connected to the support frame. The two horizontal transmission rods pass through the raw material mixing barrel, and the two vertical transmission rods are respectively connected to the inlet sealing part and the outlet sealing part. The opposite ends of the four transmission rods are installed with mutually meshing bevel gears.

[0022] Preferably, the scraping part includes a traction rod installed on a vertical transmission rod, and a scraping rod that slides with the inner wall of the raw material mixing barrel is installed at one end of the traction rod away from the transmission rod, and rubber soft plates are installed at the upper and lower ends of the scraping rod.

[0023] Preferably, the raw material mixing barrel is connected to a support assembly, and a driving part 1 for driving the transmission part and a driving part 2 for driving the raw material mixing barrel to rotate are respectively connected to the support assembly.

[0024] In summary, the present invention has the following beneficial technical effects:

[0025] 1. The barrel opening and closing assembly used in the present invention cooperates with the driving unit to realize the automatic opening of the inlet sealing part when the raw material mixing barrel is loaded, the closing of the outlet sealing part and the inlet sealing cover during stirring, and the automatic opening of the outlet sealing part when the raw material is dropped, which effectively improves the automation level of the equipment and is achieved by only one drive, reducing manpower input and lowering costs.

[0026] 2. The barrel opening and closing group used in the present invention can scrape off the raw materials remaining on the inner wall of the raw material mixing barrel 1 during the blanking process, thereby improving the effect of discharging the mixed raw materials and avoiding affecting the subsequent mixing of raw materials, thereby ensuring the accuracy of the raw material input ratio. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0028] Figure 1 The flowchart of the method for producing a high-boron, low-aluminum ferroboron alloy of the present invention is shown.

[0029] Figure 2 Shown is a schematic diagram of the three-dimensional structure of the present invention.

[0030] Figure 3 It shows a schematic diagram of the three-dimensional structure of the present invention without the support assembly, the first driving part and the second driving part.

[0031] Figure 4 A front view of the present invention is shown.

[0032] Figure 5 A left side view of the present invention is shown.

[0033] Figure 6 The present invention is shown Figure 4 Cross-sectional view of AA in the figure.

[0034] Figure 7 This invention Figure 6 Magnified view of area C in the middle.

[0035] Figure 8 The present invention is shown Figure 5 Cross-sectional view of the BB.

[0036] Figure 9 A schematic diagram of the three-dimensional structure of the guide tube, spiral guide groove and annular groove of the present invention is shown.

[0037] Figure 10 It is a diagram showing changes in the inlet sealing cover and the outlet sealing cover during the working process of the present invention.

[0038] The above drawings include the following reference numerals: 1. raw material mixing barrel; 10. feed port; 11. discharge port; 2. barrel opening and closing assembly; 20. guide pipe; 21. spiral guide groove; 22. annular groove; 23. inlet sealing portion; 230. lifting branch chain 1; 2300. lifting rod; 2301. spline sliding hole; 2302. spline rod; 2303. telescopic spring; 2304. connecting rotating plate; 2305. sliding groove; 2306. lifting block; 2307. sliding block; 2308. extrusion spring; 231. inlet sealing cover; 232. extrusion branch chain 1; 2320. limiting pipe; 2321. limiting through hole; 2322. pushing block; 2323. reset spring; 2 33. Plug-in branch chain 1; 2330. Place countersunk hole; 2331. Plug-in block; 2332. Push spring; 24. Outlet sealing part; 240. Lifting branch chain 2; 241. Outlet sealing cover; 242. Pushing branch chain 2; 243. Plug-in branch chain 2; 25. Transmission part; 250. Support frame; 2500. Stirring blade; 251. Transmission rod; 252. Bevel gear; 26. Scraping part; 260. Traction rod; 261. Scraping rod; 262. Rubber soft board; 3. Support assembly; 30. Support frame; 31. Rotating support tube; 32. Accommodating tube; 33. Placement plate; 4. Drive part 1; 40. Slip ring; 41. Motor base plate; 42. Servo motor; 5. Drive part 2. DETAILED DESCRIPTION

[0039] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] In order to achieve the above purpose, the present invention adopts the following technical solutions: Figures 1-10 , a method for making a high-boron, low-aluminum ferroboron alloy, the specific method is as follows:

[0041] S1. Weighing and batching: The required raw materials are weighed and batched according to the formula ratio. The raw materials are boron oxide, steel scraps, petroleum coke and wood chips. Boron oxide has the characteristics of high purity and low aluminum impurities, steel scraps have the characteristics of low cost and easy acquisition, petroleum coke has the characteristics of high fixed carbon content and low sulfur content, and wood chips have a porous structure that can improve the reaction kinetics during smelting.

[0042] S2. Mixing: Use a powerful mixer to evenly mix the weighed raw materials. Set appropriate mixing time and speed. During the mixing process, different raw material particles are fully in contact, laying the foundation for uniform reaction during subsequent smelting.

[0043] S3. Smelting: Add the mixed raw materials into the smelting furnace for smelting. After the raw materials are added, the temperature is gradually increased. When the temperature reaches 1400-1550℃, the raw materials begin to melt and react. During the smelting process, the reducing atmosphere and temperature fluctuations in the furnace must be strictly maintained to promote the formation of high-boron, low-aluminum, ferroboron alloy.

[0044] S4. Discharging from the furnace: When the alloy composition and temperature in the furnace reach the specified requirements, the furnace body is tilted, and the smelted high-boron low-aluminum ferroboron alloy liquid is slowly discharged through the furnace body outlet channel into the receiving container.

[0045] S5. Cooling: The high-boron, low-aluminum, ferro-boron alloy liquid in the receiving container is cooled to obtain a high-boron, low-aluminum, ferro-boron alloy block. During the cooling process, it is first cooled naturally in the air to a certain temperature, and then air-cooled. This can not only ensure the cooling speed but also reduce stress concentration. At the same time, the cooling speed of the alloy is monitored during the cooling process to ensure that the alloy has a uniform structure during solidification and avoid the occurrence of coarse grains or component segregation that affects the alloy performance.

[0046] Among them, S2 is completed by using a mixing device for high-boron low-aluminum ferro-boron alloy raw materials. The mixing device for high-boron low-aluminum ferro-boron alloy raw materials includes a raw material mixing barrel 1 with a feed port 10 and a discharge port 11 respectively opened at both ends.

[0047] The raw material mixing barrel 1 is connected to the support assembly 3, and the support assembly 3 includes two support frames 30 distributed on both sides of the raw material mixing barrel 1. The opposite ends of the two support frames 30 are rotatably connected with a rotating support tube 31 and a accommodating tube 32, and the lower ends of the two support frames 30 are jointly installed with a placement plate 33.

[0048] During specific operation, the raw material mixing barrel 1 is placed in the working position through two support frames 30 and a placement plate 33. The two support frames 30 support the raw material mixing barrel 1 by rotating the support tube 31 and the receiving tube 32. At the same time, the raw material mixing barrel 1 can rotate on the two support frames 30 by rotating the support tube 31 and the receiving tube 32. The feed port 10 and the discharge port 11 of the raw material mixing barrel 1 are used for the input of raw materials and the discharge of mixed materials, respectively.

[0049] The mixing equipment for high-boron low-aluminum boron ferroalloy raw materials also includes a barrel opening and closing group 2, which is arranged in the raw material mixing barrel 1. The barrel opening and closing group 2 includes two guide pipes 20 respectively arranged at the feed port 10 and the discharge port 11 and installed in the raw material mixing barrel 1 through multiple fixing rods. Two spiral guide grooves 21 are symmetrically provided on the inner annular surface of the guide pipe 20. The two spiral guide grooves 21 are connected at one end close to the middle of the raw material mixing barrel 1 through an annular groove 22. The spiral guide grooves 21 in the upper and lower guide pipes 20 have opposite spiral directions. The two guide pipes 20 are respectively provided with an inlet sealing part 23 and an outlet sealing part 24 that cooperate with the corresponding spiral guide grooves 21.

[0050] The barrel opening and closing assembly 2 further includes a transmission portion 25 connected to both the inlet sealing portion 23 and the outlet sealing portion 24 .

[0051] During specific operation, in the initial state, the inlet sealing part 23 and the outlet sealing part 24 respectively seal the feed port 10 and the discharge port 11 of the raw material mixing barrel 1, and the feed port 10 and the discharge port 11 are distributed up and down, and the transmission part 25 simultaneously controls the inlet sealing part 23 and the outlet sealing part 24 to meet the following requirements: when loading, the driven transmission part 25 drives the inlet sealing part 23 to move upward in the guide pipe 20 on the upper side along the guide direction of the spiral guide groove 21, thereby opening the feed port 10, and the outlet sealing part 24 continues to seal the discharge port 11. After the loading is completed, the transmission part 25 drives the inlet sealing part 23 to move upward in the guide pipe 20 on the upper side along the guide direction of the spiral guide groove 21, thereby opening the feed port 10, and the outlet sealing part 24 continues to seal the discharge port 11. 23 resets and seals the feed port 10. During stirring and mixing, the transmission part 25 does not work, and the inlet sealing part 23 and the outlet sealing part 24 seal the feed port 10 and the discharge port 11 respectively. When unloading, the driven transmission part 25 drives the outlet sealing part 24 to move downward in the guide pipe 20 on the lower side along the guide direction of the spiral guide groove 21, thereby opening the discharge port 11, and the inlet sealing part 23 continues to seal the feed port 10. After the mixed material is discharged, the transmission part 25 drives the outlet sealing part 24 to reset and seal the discharge port 11, and then repeats this step to realize the function of continuous mixing of the raw materials.

[0052] The transmission part 25 includes a support frame 250 installed in the raw material mixing barrel 1, and four evenly distributed transmission rods 251 are rotatably connected to the support frame 250. The two horizontal transmission rods 251 pass through the raw material mixing barrel 1, and the opposite ends of the four transmission rods 251 are installed with mutually meshing bevel gears 252.

[0053] The support assembly 3 is connected to a drive unit 1 (4) for driving the transmission unit 25 and a drive unit 2 (5) for rotating the raw material mixing barrel 1. The drive unit 1 (4) includes a slip ring 40 whose fixed end is fixedly connected to the housing of the drive unit 2 (5). The rotating section of the slip ring 40 is mounted with a motor base plate 41 fixedly connected to the inner wall of the receiving tube 32. A servo motor 42 is mounted on the motor base plate 41. The output shaft of the servo motor 42 is fixedly connected to the transverse transmission rod 251.

[0054] During specific operation, the slip ring 40 is connected to the existing power supply before work. The slip ring 40 is an existing technology and realizes continuous current output between the fixed end and the rotating end. The servo motor 42 is electrically connected to the slip ring 40, and the servo motor 42 can accurately control the number of rotations.

[0055] The inlet sealing part 23 includes a lifting branch chain 230 arranged in the corresponding guide tube 20, and the end of the lifting branch chain 230 close to the feed port 10 is connected to an inlet sealing cover 231 for closing the feed port 10, and two guide rods are symmetrically installed at the lower end of the inlet sealing cover 231. The sliding sleeve on the guide rod is provided with a guide frame fixedly connected to the outer surface of the raw material mixing barrel 1, and the outlet sealing part 24 includes a lifting branch chain 240 arranged in the corresponding guide tube 20, and the end of the lifting branch chain 240 close to the discharge port 11 is connected to an outlet sealing cover 241 for closing the discharge port 11, and the outlet sealing cover 241 has a conical structure. The structure of the lifting branch chain 240 is the same as that of the lifting branch chain 230.

[0056] The lifting branch chain 230 includes a lifting rod 2300 that is arranged in the corresponding guide tube 20 and has a placement cavity at one end close to the inlet sealing cover 231, a telescopic spring 2303 is installed in the placement cavity, and a connecting rotating plate 2304 that is rotatably connected to the inlet sealing cover 231 is installed at the end of the telescopic spring 2303 away from the lifting rod 2300, a spline sliding hole 2301 is opened in the middle of the lifting rod 2300, and a spline rod 2302 is slidably connected in the spline sliding hole 2301, and two vertical transmission rods 251 are respectively connected to the spline rod 2302 in the inlet sealing part 23 and the spline rod 2302 in the outlet sealing part 24.

[0057] During specific operation, the servo motor 42 is started, and the servo motor 42 drives the horizontal transmission rod 251 to rotate. The rotating transmission rod 251 drives multiple bevel gears 252 to rotate through the corresponding bevel gear 252. The multiple bevel gears 252 drive multiple transmission rods 251 to rotate. The two vertical transmission rods 251 rotate and the rotation directions are opposite. The two rotating vertical transmission rods 251 drive the two spline rods 2302 to rotate. The spline rod 2302 drives the lifting rod 2300 to rotate in the guide tube 20 through the spline sliding hole 2301. At the same time, the lifting rod 2300 drives the connecting rotating plate 2304 to rotate through the telescopic spring 2303.

[0058] The lifting branch chain 230 also includes a sliding groove 2305 opened on the outer ring surface of the lifting rod 2300 at one end away from the inlet sealing cover 231, and a lifting block 2306 is slidably connected in the sliding groove 2305. A sliding block 2307 that slides with the spiral guide groove 21 is installed on the lifting block 2306, and an extrusion spring 2308 is installed between the lifting block 2306 and the sliding groove 2305. A guide rail rod fixedly connected to the sliding groove 2305 is slidably penetrated in the middle of the lifting block 2306.

[0059] When working, in the initial state, the two sliding blocks 2307 are in the middle position of the two spiral guide grooves 21 in the guide tube 20. When loading, the transmission rods 251 rotating on the upper and lower sides drive the corresponding spline rods 2302 to rotate, and the spline rods 2302 drive the sliding blocks 2307 to slide in the corresponding spiral guide grooves 21 through the sliding grooves 2305 on the lifting rods 2300 and the guide rods. At this time, the rotation direction of the upper and lower lifting rods 2300 is to drive the sliding blocks 2307 to move upward along the spiral guide grooves 21. The lifting rod 2300 at the top drives the sliding block 2307 to gradually move to the upper end of the spiral guide groove 21 in the upper guide tube 20. At the same time, the upper end of the lifting rod 2300 pushes the inlet sealing cover 231 upward, thereby realizing the function of opening the feed port 10. At this time, the lifting rod 2300 at the bottom drives the sliding block 2307 to move to the upper end of the spiral guide groove 21 in the lower guide tube 20, that is, the annular groove 22. In this rotation direction, the sliding block 2307 at the bottom is in the annular groove 22. 2 and will not enter the spiral guide groove 21 on the lower side, and will not be affected by the number of rotations of the transmission rod 251, ensuring that the number of rotations of the upper transmission rod 251 is sufficient to drive the upper lifting rod 2300 to separate the inlet sealing cover 231 from the feed port 10, and the lifting rod 2300 on the lower side is pulled by the telescopic spring 2303 on the lower side and the outlet sealing cover 241, so that the outlet sealing cover 241 always seals the discharge port 11, and then the raw materials are fed into the raw materials from the feed port 10 through the existing feeding equipment. In the mixing barrel 1; when the raw materials are added, the servo motor 42 is adjusted to rotate in the opposite direction. At this time, the rotation direction of the upper and lower lifting rods 2300 is to drive the sliding block 2307 to move downward along the spiral guide groove 21. The upper lifting rod 2300 drives the sliding block 2307 to gradually move to the middle position of the spiral guide groove 21 in the upper guide tube 20. At the same time, the upper lifting rod 2300 pulls the inlet sealing cover 231 through the telescopic spring 2303, thereby realizing the function of closing the feed port 10. At the same time, the lower lifting rod 2300 drives the sliding block 2307 to move downward and move from the annular groove 22 back to the spiral guide groove 21 until the lower sliding block 2307 moves to the middle position of the corresponding spiral guide groove 21. At this time, the inlet sealing cover 231 and the outlet sealing cover 241 seal the feed port 10 and the discharge port 11 respectively.

[0060] The lifting branch chain 1 230 is connected to the pushing branch chain 1 232, and the lifting branch chain 2 240 is connected to the pushing branch chain 2 242. The structure of the pushing branch chain 2 242 is the same as that of the pushing branch chain 1 232. The pushing branch chain 1 232 includes a limiting tube 2320 that is slidably sleeved on the outer surface of the lifting rod 2300 and fixedly connected to the inlet sealing cover 231. The limiting tube 2320 has two symmetrical limiting through holes 2321 at one end close to the inlet sealing cover 231. A receiving groove is provided on the wall of the limiting through hole 2321. A pushing block 2322 is slidably connected in the limiting through hole 2321. A sliding protrusion located in the receiving groove is integrally formed on the pushing block 2322, and a reset spring 2323 is installed between the sliding protrusion and the receiving groove.

[0061] The outer side of the pushing and squeezing branch chain 1 232 is symmetrically provided with a plug-in branch chain 1 233 connected to the corresponding guide tube 20, and the outer side of the pushing and squeezing branch chain 2 242 is symmetrically provided with a plug-in branch chain 2 243 connected to the corresponding guide tube 20. The structure of the plug-in branch chain 243 is the same as that of the plug-in branch chain 1 233. The plug-in branch chain 1 233 includes a placement countersunk hole 2330 which is opened in the guide tube 20 and whose position corresponds to the limiting through hole 2321. A plug-in block 2331 is slidably connected in the placement countersunk hole 2330. An inclined surface is provided at the end of the plug-in block 2331 away from the middle of the raw material mixing barrel 1, and a pushing spring 2332 is installed between the plug-in block 2331 and the placement countersunk hole 2330.

[0062] During specific operation, the inlet sealing cover 231 and the outlet sealing cover 241 are positioned by the cooperation with the lifting rod 2300 and the telescopic spring 2303, and the cooperation between the squeezing and pushing branch chain 1 232 and the squeezing and pushing branch chain 1 232 and the squeezing and pushing branch chain 2 242 and the plug-in branch chain 2 243 to achieve hard limit, so as to avoid the inlet sealing cover 231 and the outlet sealing cover 241 from opening during the subsequent raw material mixing process. The specific operation is as follows: in the initial state, the inlet sealing cover 231 The inlet 10 and the outlet 11 are sealed with the outlet sealing cover 241 respectively. The plug-in blocks 2331 on the upper and lower sides are both located in the corresponding limiting through holes 2321, thereby realizing hard limiting of the inlet sealing cover 231 and the outlet sealing cover 241. When loading, the lifting rod 2300 on the upper side pushes the two pushing blocks 2322 on the upper side when moving. The pushing blocks 2322 are forced to move in the limiting through holes 2321 and push the plug-in blocks 2331 out of the limiting through holes 2321. At the same time, the pushing block 2322 squeezes the return spring 2323 through the sliding protrusion, and the plug-in block 2331 squeezes the push spring 2332. At this time, the hard limit of the inlet sealing cover 231 is released, and then the upper lifting rod 2300 pushes the inlet sealing cover 231 upward to open the feed port 10. After the feeding is completed, the lifting rod 2300 pulls the inlet sealing cover 231 to return to its original position through the telescopic spring 2303. When the inlet sealing cover 231 is returned to its original position and the lifting rod 2300 and the pushing block 2331 are in contact, the lifting rod 2300 and the pushing block 2331 are in contact. After the block 2322 is separated, the squeezed return spring 2323 drives the pushing block 2322 to reset through the sliding protrusion. At the same time, the squeezed push spring 2332 resets and drives the plug-in block 2331 to re-enter the limiting through hole 2321, realizing the function of hard limiting the inlet sealing cover 231. Similarly, the presence or absence of hard limiting of the outlet sealing cover 241 can also be realized. It should be noted that the elastic force provided by the telescopic spring 2303 is greater than the return spring 2323 and the push spring 2332.

[0063] A plurality of evenly distributed stirring blades 2500 are installed on both the left and right sides of the transverse section of the support frame 30 .

[0064] During specific operation, after the raw materials are put into the mixing bowl, the driving part 25 is started. The driving part 25 is an existing driving device. The driving part 25 drives the accommodating tube 32 to rotate, and the accommodating tube 32 drives the raw material mixing barrel 1 to rotate. The raw material mixing barrel 1 drives the raw materials to rotate up and down to realize the function of mixing the raw materials. At the same time, the stirring blades 2500 on the support frame 30 play a stirring role in mixing the raw materials, and the raw materials fall onto the stirring blades 2500 by gravity. The stirring blades 2500 can break up the raw materials, further improving the effect of raw material mixing.

[0065] Wall scraping parts 26 for scraping off the raw materials attached to the inner wall of the raw material mixing barrel 1 are symmetrically provided on the upper and lower sides of the transmission part 25 .

[0066] The scraping part 26 includes a traction rod 260 installed on the vertical transmission rod 251. The end of the traction rod 260 away from the transmission rod 251 is equipped with a scraping rod 261 that slides with the inner wall of the raw material mixing barrel 1. The upper and lower ends of the scraping rod 261 are both equipped with rubber soft plates 262.

[0067] During specific operation, after the raw material mixing barrel 1 mixes the raw materials for a period of time, the driving part 25 is stopped, and then the servo motor 42 is started. The direction of rotation of the servo motor 42 is to drive the sliding block 2307 to move downward in the corresponding spiral guide groove 21. The steps and principles of the outlet sealing cover 241 opening the discharge port 11 are the same as the steps and principles of the inlet sealing cover 231 opening the feed port 10. They will not be repeated here. At the same time as the outlet sealing cover 241 is opened, the upper and lower transmission rods 251 drive multiple traction rods 260 to rotate, and the traction rods 260 drive the scraping rods 261 to rotate and The raw materials remaining on the inner wall of the mixing barrel 1 are scraped off and discharged from the discharge port 11. The rubber soft plate 262 on the scraper rod 261 cleans the raw materials at this position when the scraper rod 261 rotates to the fixed rod or the support frame 30, thereby improving the effect of discharging the mixed raw materials and avoiding affecting the subsequent mixing of raw materials, ensuring the accuracy of the raw material input ratio. After the raw materials are discharged, the servo motor 42 is adjusted to rotate in the opposite direction. The steps and principles of the outlet sealing cover 241 sealing the discharge port 11 are the same as the steps and principles of the inlet sealing cover 231 sealing the feed port 10, and will not be repeated here.

[0068] Repeat the entire raw material mixing step until all the raw materials are mixed and the work is completed.

[0069] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "top", "bottom", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the embodiments of the present invention and to simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0070] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0071] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for preparing a high-boron low-aluminum ferroboron alloy, characterized in that: The specific method is as follows: S1. Weighing ingredients: weighing and mixing the required raw materials according to the formula ratio; S2. Mixing: Use a powerful mixer to evenly mix the weighed raw materials; S3, smelting: adding the mixed raw materials into the smelting furnace for smelting; S4. Unloading: When the alloy composition and temperature in the furnace reach the specified requirements, the smelted high-boron low-aluminum ferroboron alloy liquid is unloaded from the furnace and flows into a receiving container; S5, cooling: cooling the high-boron low-aluminum ferro-boron alloy liquid in the receiving container to obtain a high-boron low-aluminum ferro-boron alloy block; Among them, S2 is completed with a mixing device for high-boron low-aluminum ferro-boron alloy raw materials, and the mixing device for high-boron low-aluminum ferro-boron alloy raw materials includes: a raw material mixing barrel with a feed port and a discharge port at both ends; A barrel opening and closing group is arranged in the raw material mixing barrel, and the barrel opening and closing group includes two guide pipes respectively arranged at the feed inlet and the discharge outlet and installed in the raw material mixing barrel, two spiral guide grooves are symmetrically provided on the inner annular surface of the guide pipes, and the two spiral guide grooves are connected by an annular groove at one end near the middle of the raw material mixing barrel. The spiral guide grooves in the upper and lower guide pipes have opposite spiral directions, and the two guide pipes are respectively provided with an inlet sealing portion and an outlet sealing portion that cooperate with the corresponding spiral guide grooves; The barrel opening and closing assembly also includes a transmission part connected to both the inlet sealing part and the outlet sealing part, and the transmission part simultaneously controls the inlet sealing part and the outlet sealing part to meet the following requirements: opening the feed port and sealing the discharge port when loading; sealing the feed port and the discharge port when stirring; and sealing the feed port and opening the discharge port when discharging. Wall scraping parts for scraping off the raw materials attached to the inner wall of the raw material mixing barrel are symmetrically arranged on the upper and lower sides of the transmission part.

2. The method for preparing a high-boron, low-aluminum, ferroboron alloy according to claim 1, wherein: The inlet sealing part includes a lifting branch chain arranged in the corresponding guide tube, and the end of the lifting branch chain close to the feed port is connected to an inlet sealing cover for closing the feed port. The lifting branch chain is connected to a pushing branch chain, and a plug-in branch chain connected to the corresponding guide tube is symmetrically arranged on the outside of the pushing branch chain.

3. The method for preparing a high-boron, low-aluminum, ferroboron alloy according to claim 2, wherein: The lifting branch chain includes a lifting rod that is arranged in a corresponding guide tube and has a placement cavity at one end close to the inlet sealing cover, a telescopic spring is installed in the placement cavity, and a connecting rotating plate that is rotatably connected to the inlet sealing cover is installed at the end of the telescopic spring away from the lifting rod, a spline sliding hole is opened in the middle of the lifting rod, and a spline rod is slidably connected in the spline sliding hole.

4. The method for producing a high-boron, low-aluminum, ferroboron alloy according to claim 3, wherein: The lifting branch chain also includes a sliding groove opened on the outer ring surface of the lifting rod away from the end of the inlet sealing cover, a lifting block is slidably connected in the sliding groove, a sliding block is installed on the lifting block and slides with the spiral guide groove, and an extrusion spring is installed between the lifting block and the sliding groove.

5. The method for preparing a high-boron, low-aluminum, ferroboron alloy according to claim 3, wherein: The pushing and squeezing branch chain includes a limiting tube that is slidably sleeved on the outer surface of the lifting rod and fixedly connected to the inlet sealing cover. Two limiting through holes are symmetrically provided at one end of the limiting tube close to the inlet sealing cover. A receiving groove is provided on the wall of the limiting through hole. A pushing block is slidably connected in the limiting through hole. A sliding protrusion located in the receiving groove is integrally formed on the pushing block, and a reset spring is installed between the sliding protrusion and the receiving groove.

6. The method for producing a high-boron, low-aluminum ferroboron alloy according to claim 5, wherein: The plug-in branch chain 1 includes a placement countersunk hole opened in the guide tube and corresponding to the position of the limiting through hole. A plug-in block is slidably connected in the placement countersunk hole, and a push spring is installed between the plug-in block and the placement countersunk hole.

7. The method for preparing a high-boron low-aluminum ferroboron alloy according to claim 1, characterized in that: The outlet sealing part includes a lifting branch chain 2 arranged in the corresponding guide tube, and the end of the lifting branch chain 2 close to the discharge port is connected to an outlet sealing cover for closing the discharge port. The lifting branch chain 2 is connected to the pushing branch chain 2, and the outer side of the pushing branch chain 2 is symmetrically provided with a plug-in branch chain 2 connected to the corresponding guide tube.

8. The method for preparing a high-boron, low-aluminum, ferroboron alloy according to claim 1, wherein: The transmission part includes a support frame installed in the raw material mixing barrel, and four evenly distributed transmission rods are rotatably connected to the support frame. The two horizontal transmission rods pass through the raw material mixing barrel, and the two vertical transmission rods are respectively connected to the inlet sealing part and the outlet sealing part. The opposite ends of the four transmission rods are installed with mutually meshing bevel gears.

9. The method for producing a high-boron, low-aluminum, ferroboron alloy according to claim 8, wherein: The scraping part includes a traction rod installed on a vertical transmission rod, and a scraping rod that slides with the inner wall of the raw material mixing barrel is installed at one end of the traction rod away from the transmission rod. Rubber soft plates are installed at the upper and lower ends of the scraping rod.

10. The method for producing a high-boron, low-aluminum, ferroboron alloy according to claim 1, wherein: The raw material mixing barrel is connected to a supporting assembly, and a driving part 1 for driving the transmission part and a driving part 2 for driving the raw material mixing barrel to rotate are respectively connected to the supporting assembly.

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