Iron alloy fine casting device and method

Abstract

The invention relates to the technical field of iron alloy casting equipment, and discloses an iron alloy fine casting device and method, and the iron alloy fine casting device comprises a base, a liquid storage tank and an intermittent liquid conveying assembly. A first annular seat and a second annular seat are arranged on the base at intervals, and a first flow channel and a second flow channel are formed in the edges of the first annular seat and the second annular seat respectively; a liquid outlet pipe is arranged at the bottom of the liquid storage tank, and a liquid outlet of the liquid outlet pipe is vertically formed and communicates with the first flow channel; the intermittent infusion assembly comprises a rotating seat and a plurality of infusion tubes, the rotating seat is concentrically and rotationally connected between the first annular seat and the second annular seat, the infusion tubes are arranged in the rotating seat in a penetrating mode in the axial direction of the rotating seat, and the two ends of each infusion tube make contact with the plane of the first annular seat and the plane of the second annular seat respectively. The influence of the pressure of the residual iron alloy solution in the liquid storage tank on the flowing speed of the iron alloy solution into the mold can be reduced, so that the flowing speed of the iron alloy solution into the casting mold can be more stable and slow.

Description

Technical Field

[0001] The present invention relates to the technical field of ferroalloy casting equipment, and more specifically, it relates to a ferroalloy fine casting device and method. Background Art

[0002] Ferroalloys refer to alloys composed of iron and one or more other metallic or non-metallic elements (such as silicon, manganese, chromium, molybdenum, titanium, etc.). They are usually not directly used as structural materials, but as additives in the steel smelting process to adjust the composition of steel, improve its properties or optimize the smelting process.

[0003] In the related art, when casting ferroalloys, usually the ferroalloy is first melted into a ferroalloy solution, and then poured into a casting machine, which injects it into a mold or a crystallizer. After cooling and solidifying, ingots (such as silicon iron blocks, ferrochrome ingots, etc.) are formed. For granulation casting machines (such as the production of silicon iron particles), they usually use casting nozzles with specific pore diameters, and rely on the self-weight of the ferroalloy solution to flow out. The flow rate is determined by the pore diameter size. However, since the mass of the ferroalloy solution in the liquid storage tank is variable, the pressure of the ferroalloy solution at the casting nozzle is also variable. In this way, it is easy to cause a relatively large flow rate of the ferroalloy at the casting nozzle at the beginning, and then gradually decrease, thus easily affecting the quality of the casting product due to uneven flow rates. Summary of the Invention

[0004] The present invention provides a ferroalloy fine casting device and method, which solve the technical problem in the related art that the flow rate of the ferroalloy at the casting nozzle is relatively large at the beginning and then gradually decreases, thus easily affecting the quality of the casting product due to uneven flow rates.

[0005] The present invention provides a ferroalloy fine casting device, including a base, on which a first annular seat and a second annular seat are arranged at intervals. The first annular seat and the second annular seat are concentrically arranged. A first flow channel and a second flow channel are respectively formed through the edges of the first annular seat and the second annular seat along their axial directions; a liquid storage tank, which is arranged on the base. An outlet pipe is arranged at the bottom of the liquid storage tank, and the liquid outlet of the outlet pipe is vertically arranged and communicated with one side of the first flow channel; an intermittent liquid injection assembly, which includes: a rotating seat and a plurality of liquid injection pipes. The rotating seat is rotatably connected between the first annular seat and the second annular seat and is concentric with the first annular seat. The plurality of liquid injection pipes are axially arranged through the inside of the rotating seat. The two ends of the liquid injection pipe are respectively in planar contact with the first annular seat and the second annular seat. When the rotating seat rotates, the two ends of the liquid injection pipe are selectively communicated with the other side of the first flow channel and one side of the second flow channel respectively.

[0006] As a further improvement of the present invention, the refined ferroalloy casting device further includes: a gradient heat preservation assembly, which includes a high-temperature section protection assembly and a medium-temperature section protection assembly; the high-temperature section protection assembly includes a heat preservation layer and a first heating element. The heat preservation layer is arranged on the side of the rotating seat close to the first annular seat, and from the inside to the outside, it is successively a silicon carbide ceramic layer, a ceramic fiber layer, and a zirconia fiber layer. The first heating element is arranged inside the rotating seat; the medium-temperature section protection assembly includes an annular cavity opened inside the rotating seat. Nitrogen is arranged in the annular cavity, and a layer of aluminum silicate fiber is arranged outside the annular cavity.

[0007] As a further improvement of the present invention, the base includes: two mutually parallel first vertical plates and second vertical plates, and two mutually parallel first horizontal plates and second horizontal plates. The first vertical plate and the second vertical plate are fixedly connected to the upper side of the first horizontal plate. The second horizontal plate is fixedly connected to the upper side of the first vertical plate. The liquid storage tank is fixedly connected to the upper side of the second horizontal plate. The first annular seat is fixedly connected to the first vertical plate, and the second annular seat is fixedly connected to the second vertical plate.

[0008] As a further improvement of the present invention, a plurality of the infusion tubes are distributed in a circular array about the axis of the rotating seat.

[0009] As a further improvement of the present invention, the refined ferroalloy casting device further includes: a power assembly, which is used to drive the rotation of the rotating seat. The power assembly includes a gear ring, a gear, a motor, and a frame. The frame is fixedly connected to the base. The motor is fixedly connected to the frame and the output end of the motor is fixedly connected to the gear. The gear ring is fixedly connected to the outer wall of the rotating seat, and the gear ring is adapted to the gear.

[0010] As a further improvement of the present invention, a casting pipe is fixedly connected to the other side of the second flow channel. A third flow channel is opened in the casting pipe. A heating seat is arranged outside the casting pipe, and a plurality of second heating elements are arranged inside the heating seat.

[0011] As a further improvement of the present invention, a throttling groove is opened inside the casting pipe. The upper side of the throttling groove is communicated with the upper side of the casting pipe. The refined ferroalloy casting device further includes: a flow control assembly, which is used to control the flow rate of the alloy solution inside the casting pipe; the flow control assembly includes a throttling plate, two ear plates, and two mounting seats. One end of the throttling plate is slidably connected in the throttling groove, and the two sides of the other end are respectively fixedly connected to the two ear plates. The two mounting seats are fixedly connected to the casting pipe. The two ear plates and the two mounting seats are symmetrically distributed about the axis of the casting pipe, and the two ear plates and the two mounting seats correspond one by one. A spring is arranged between the corresponding ear plate and the mounting seat.

[0012] As a further improvement of the present invention, a guiding hole is formed on the mounting seat, a guiding rod is arranged on the ear plate, and the guiding rod is slidably connected with the guiding hole.

[0013] As a further improvement of the present invention, the size of the cut-off groove is larger than the cross-sectional size of the third flow channel, and the projection of the third flow channel in the axial direction of the casting pipe is located within the projection of the cut-off groove in the axial direction of the casting pipe. In the initial state, the projection of the cut-off plate in the axial direction of the casting pipe is located outside the projection of the third flow channel in the axial direction of the casting pipe.

[0014] As a further improvement of the present invention, the refined ferroalloy casting device further includes: a driving ring, which is threadedly connected to the outer wall of the casting pipe. A first inclined surface is arranged on the side of the driving ring facing the cut-off plate, and the distance from the end of the first inclined surface close to the cut-off plate to the axis of the casting pipe is greater than the distance from the end of the first inclined surface far from the cut-off plate to the axis of the casting pipe; and / or a second inclined surface is arranged at the other end of the cut-off plate, and the second inclined surface is arranged in parallel with the first inclined surface.

[0015] A method for using a refined ferroalloy casting device is as follows:

[0016] Step 1: Pour the prepared ferroalloy solution into the liquid storage tank.

[0017] Step 2: Adjust the position of the driving ring on the casting pipe according to the actual working conditions to control the opening degree of the third flow channel through the cut-off plate.

[0018] Step 3: Start the power assembly, and the power assembly drives the rotating seat to rotate. When one end of any infusion pipe on the rotating seat close to the first annular seat is communicated with the first flow channel, stop driving the rotating seat to rotate until the preset static time of the rotating seat is reached.

[0019] Step 4: Continue to drive the rotating seat to rotate. When one end of an adjacent infusion pipe close to the first annular seat is communicated with the first flow channel, and one end of the previous infusion pipe storing the ferroalloy solution close to the second annular seat is communicated with the second flow channel, stop driving the rotating seat to rotate until the preset static time of the rotating seat is reached.

[0020] Step 5: Repeat the above Step 3 and Step 4.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. The present invention provides an intermittent infusion assembly, which includes a plurality of infusion tubes and a rotating seat. By driving the rotation of the rotating seat, the plurality of infusion tubes can be selectively connected to the first flow channel and the second flow channel, and the same infusion tube will not be connected to the first flow channel and the second flow channel simultaneously. In this way, it can prevent the ferroalloy solution from directly flowing from the liquid storage tank into the casting mold. When the ferroalloy solution enters the casting mold through the horizontally placed infusion tube, compared with flowing from the liquid storage tank into the casting mold, it can reduce the influence of the pressure of the remaining ferroalloy solution in the liquid storage tank on the flow rate of the ferroalloy solution flowing into the mold. Furthermore, it can make the flow rate of the ferroalloy solution flowing into the mold more stable and gentle. The setting of the plurality of infusion tubes can improve the casting speed of the ferroalloy solution to a certain extent.

[0023] 2. The present invention opens a throttling groove inside the casting tube. By using the driving ring to control the movement of the throttle plate in the throttling groove, the opening degree of the third flow channel can be controlled and maintained, thereby controlling the flow rate of the ferroalloy solution in the casting tube flowing into the mold. The mechanical structure is not easily damaged, and it is more flexible and convenient to use.

[0024] 3. The present invention is provided with a gradient heat preservation assembly at the rotating seat. Among them, the high-temperature section protection assembly is arranged on the side of the rotating seat close to the first annular seat, which can strongly heat-insulate the ferroalloy solution just flowing into the infusion tube from the liquid storage tank. The medium-temperature section protection assembly is arranged on the side of the rotating seat close to the second annular seat, which can moderately heat-insulate the ferroalloy solution, thereby slowing down the cooling speed of the ferroalloy solution and being beneficial to improving the quality of the cast product. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the first three-dimensional structure schematic diagram of a ferroalloy fine casting device of the present invention;

[0026] Figure 2 is the front view structure schematic diagram of a ferroalloy fine casting device of the present invention;

[0027] Figure 3 is the top view structure schematic diagram of a ferroalloy fine casting device of the present invention;

[0028] Figure 4 is the first side view sectional three-dimensional structure schematic diagram of a ferroalloy fine casting device of the present invention;

[0029] Figure 5 is Figure 4 the enlarged view of part A in

[0030] Figure 6 is the second side view sectional three-dimensional structure schematic diagram of a ferroalloy fine casting device of the present invention;

[0031] Figure 7It is a schematic side-sectional structure view of a refined casting device for ferroalloy of the present invention;

[0032] Figure 8 is Figure 7 the enlarged view at position B in

[0033] Figure 9 It is a schematic front-sectional structure view of a refined casting device for ferroalloy of the present invention;

[0034] Figure 10 is Figure 9 the enlarged view at position C in

[0035] Figure 11 is Figure 9 the enlarged view at position D in

[0036] In the figure: 1. Base; 11. First vertical plate; 12. Second vertical plate; 13. First horizontal plate; 14. Second horizontal plate; 2. First annular seat; 3. Second annular seat; 4. Liquid storage tank; 41. Liquid outlet pipe; 5. Intermittent liquid infusion assembly; 51. Rotating seat; 52. Liquid infusion pipe; 6. Power assembly; 61. Ring gear; 62. Gear; 63. Motor; 64. Frame; 7. Casting pipe; 71. Third flow channel; 74. Heating seat; 75. Second heating element; 76. Flow cutoff groove; 8. Flow control assembly; 81. Flow cutoff plate; 811. Second inclined surface; 82. Ear plate; 821. Guide rod; 83. Mounting seat; 831. Guide hole; 84. Spring; 9. Driving ring; 91. First inclined surface; 100. Gradient heat preservation assembly; 110. High-temperature section protection assembly; 111. Heat preservation layer; 1111. Silicon carbide ceramic layer; 1112. Ceramic fiber layer; 1113. Zirconia fiber layer; 112. First heating element; 120. Medium-temperature section protection assembly; 121. Annular cavity; 122. Aluminum silicate fiber layer. Detailed implementation manners

[0037] Now, the subject matter described herein will be discussed with reference to example embodiments. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. The functions and arrangements of the elements discussed can be changed without departing from the scope of protection of the content of this specification. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described relative to some examples can also be combined in other examples.

[0038] As Figures 1 - 11As shown in the figure, a refined casting device for ferroalloy includes a base 1, a liquid storage tank 4, and an intermittent liquid infusion assembly 5. Among them, the base 1 mainly plays the role of installation and support, and can provide an installation carrier for the corresponding components. The liquid storage tank 4 is mainly used to store the ferroalloy solution and release the ferroalloy solution inside. The intermittent liquid infusion assembly 5 is mainly used to intermittently transport the ferroalloy solution in the liquid storage tank 4 to the casting mold.

[0039] Specifically, as Figure 1 shown, the base 1 includes two parallel first vertical plates 11 and second vertical plates 12, and two parallel first horizontal plates 13 and second horizontal plates 14. The first vertical plate 11 and the second vertical plate 12 are fixedly connected to the upper side of the first horizontal plate 13, and the first vertical plate 11 and the second vertical plate 12 are arranged at intervals. The second horizontal plate 14 is fixedly connected to the upper side of the first vertical plate 11, and the liquid storage tank 4 is fixedly connected to the upper side of the second horizontal plate 14. Fixing the liquid storage tank 4 to the upper side of the second horizontal plate 14 facilitates the discharge of the ferroalloy solution in the liquid storage tank 4 under the action of gravity.

[0040] In addition, as Figure 1 shown, the base 1 is provided with a first annular seat 2 and a second annular seat 3 at intervals, and the first annular seat 2 and the second annular seat 3 are concentrically arranged. Specifically, the first annular seat 2 is fixedly connected to the first vertical plate 11, the second annular seat 3 is fixedly connected to the second vertical plate 12, the axes of the first annular seat 2 and the second annular seat 3 are collinear, and the axes are all horizontally arranged. The edges of the first annular seat 2 and the second annular seat 3 are respectively provided with a first flow channel and a second flow channel along their axial directions, and both the first flow channel and the second flow channel mainly play the role of guiding the flow. It should be noted that the axes of the first flow channel and the second flow channel are parallel but not collinear.

[0041] In addition, as Figure 1 and Figure 2 shown, a liquid outlet pipe 41 is fixedly connected to the bottom of the liquid storage tank 4, and the liquid outlet of the liquid outlet pipe 41 is vertically arranged and communicated with one side of the first flow channel. In this embodiment, the liquid outlet pipe 41 is an L-shaped structure, and the liquid outlet pipe 41 has a liquid inlet and a liquid outlet. Among them, the liquid inlet is communicated with the inside of the liquid storage tank 4, the liquid outlet is communicated with one side of the first flow channel, and the axis at the liquid outlet is horizontally arranged. In this way, the ferroalloy solution in the liquid storage tank 4 can flow into the first flow channel through the liquid outlet pipe 41, and the axis of the first flow channel is also horizontally arranged.

[0042] In addition, as Figure 1 and Figure 6As shown, the intermittent infusion assembly 5 includes a rotating base 51 and a plurality of infusion tubes 52. Among them, the infusion tubes 52 mainly serve to transport the ferroalloy solution. The rotating base 51 is rotatably connected between the first annular seat 2 and the second annular seat 3, and the rotating base 51 is concentric with the first annular seat 2. That is to say, the rotating base 51 can rotate around its own axis. A plurality of infusion tubes 52 are axially penetrated through the inside of the rotating base 51 along the axial direction of the rotating base 51. The two ends of the infusion tubes 52 are respectively in plane contact with the first annular seat 2 and the second annular seat 3. When the rotating base 51 rotates, the two ends of the infusion tubes 52 are respectively selectively communicated with the other side of the first flow channel and one side of the second flow channel.

[0043] It should be noted that arranging a plurality of infusion tubes 52 axially through the inside of the rotating base 51 can make the arrangement of the plurality of infusion tubes 52 more stable, and can reduce the heat dissipation of the ferroalloy solution, so as to better maintain the state and properties of the ferroalloy solution.

[0044] In addition, the two ends of the infusion tubes 52 are respectively in plane contact with the first annular seat 2 and the second annular seat 3. That is to say, the first annular seat 2 and the second annular seat 3 can have a sealing effect on the two ends of the infusion tubes 52. Rotate the rotating base 51. When the end of the infusion tube 52 close to the first annular seat 2 is communicated with the other side of the first flow channel, the ferroalloy solution in the liquid storage tank 4 can flow into the corresponding infusion tube 52 through the liquid outlet pipe 41 and the first flow channel for storage. Continue to rotate the rotating base 51. When the end of the infusion tube 52 storing the ferroalloy solution close to the second annular seat 3 is communicated with the second flow channel, the ferroalloy solution in the infusion tube 52 will flow into the corresponding casting mold through the second flow channel for casting. Since the axes of the first flow channel and the second flow channel are parallel but not collinear, the ferroalloy solution in the liquid storage tank 4 will not directly flow into the second flow channel through the infusion tube 52. Therefore, the speed at which the ferroalloy solution flows into the mold will not be affected by the pressure of the remaining ferroalloy solution in the liquid storage tank 4, and thus the flow rate of the ferroalloy solution flowing into the casting mold can be made more stable and gentle.

[0045] In addition, as Figure 6 shown, a plurality of infusion tubes 52 are distributed in a circular array about the axis of the rotating base 51. This can make the distribution of the plurality of infusion tubes 52 more uniform. In this embodiment, six infusion tubes 52 are provided, and the corresponding central angle between adjacent two infusion tubes 52 is 60°, and the corresponding central angle between the first flow channel and the second flow channel is also 60°.

[0046] In addition, as Figure 2 and Figure 4As shown in the figure, the refined casting device for ferroalloy further includes: a power assembly 6, which is used to drive the rotating seat 51 to rotate. The power assembly 6 includes: a gear ring 61, a gear 62, a motor 63 and a frame 64. The frame 64 is fixedly connected to the base 1, the motor 63 is fixedly connected to the frame 64, and the output end of the motor 63 is fixedly connected to the gear 62. The gear ring 61 is fixedly connected to the outer wall of the rotating seat 51, and the gear ring 61 is adapted to the gear 62. During use, start the motor 63. The rotation of the motor 63 will drive the gear 62 to rotate, and the rotation of the gear 62 can drive the gear ring 61 to rotate. Since the gear ring 61 is fixedly connected to the rotating seat 51, the rotation of the gear ring 61 can drive the rotating seat 51 to rotate, and thus the rotation of multiple infusion tubes 52 can be realized. This embodiment may further include a controller for controlling the rotation speed and rotation angle of the motor 63.

[0047] In addition, as Figure 3 , Figure 9 and Figure 11 shown, the refined casting device for ferroalloy further includes: a gradient heat preservation assembly 100, which includes: a high-temperature section protection assembly 110 and a medium-temperature section protection assembly 120; the high-temperature section protection assembly 110 includes: a heat preservation layer 111 and a first heating element 112. The heat preservation layer 111 is arranged on the side of the rotating seat 51 close to the first annular seat 2, and from inside to outside, it is in turn: a silicon carbide ceramic layer 1111, a ceramic fiber layer 1112 and a zirconia fiber layer 1113. The first heating element 112 is arranged inside the rotating seat 51; the medium-temperature section protection assembly 120 includes: an annular cavity 121 opened inside the rotating seat 51, nitrogen is arranged in the annular cavity 121, and an aluminum silicate fiber layer 122 is arranged outside the annular cavity 121.

[0048] It should be noted that the transportation of ferroalloy solution is usually divided into three stages. The first stage is the iron discharging stage, that is, the high-temperature area, and heat preservation needs to be strengthened in this stage to reduce temperature drop. The second stage is the transportation process, that is, the medium-temperature area, and moderate heat preservation is required in this stage to balance heat loss. The third stage is before casting, and it is necessary to avoid the ferroalloy solution from being supercooled in this stage. One end of the infusion tube 52 close to the first annular seat 2 is close to the liquid storage tank 4, which is the high-temperature area. One end of the infusion tube 52 close to the second annular seat 3 is far from the liquid storage tank 4, which is the medium-temperature area, and the second flow path and the outside are the low-temperature area. The first heating element 112 can be a silicon carbide rod or a resistance wire. Of course, it can also be other suitable materials, mainly for heating the rotating seat 51, so as to facilitate heat preservation of multiple infusion tubes 52 at the same time.

[0049] For the high-temperature section protection assembly 110, it is mainly used for heat preservation of the high-temperature area. Silicon carbide (SiC) has high hardness and high temperature resistance (above 1600°C), and can resist the erosion of ferroalloy solution and the corrosion of molten slag, so it is more reasonable to place it in the innermost layer.

[0050] Ceramic fiber has a low thermal conductivity (0.1 - 0.2 W / m·K), which can significantly slow down the heat transfer to the outside. Moreover, the fiber layer can absorb the thermal expansion stress of the silicon carbide layer and prevent cracking. Ceramic fiber is lightweight, which can reduce the weight of the overall device and protect the outermost zirconia fiber layer 1113 at the same time.

[0051] Zirconia fiber can withstand temperatures up to 2200°C and still maintain stability in extreme environments. It has low thermal radiation: a high reflectivity can reduce heat dissipation by infrared radiation and is suitable for high-temperature outer surface protection. Moreover, it is more oxidation-resistant than ordinary ceramic fiber, extending the service life of the device.

[0052] In addition, for the medium-temperature protection component 120, it is mainly used for heat insulation in the medium-temperature area. The thermal conductivity of nitrogen at normal temperature and pressure is only 0.024 W / m·K, which is close to that of air but more stable, and can effectively block heat conduction. In the annular cavity 121, nitrogen can avoid heat loss caused by air convection. Nitrogen is an inert gas, which can prevent the oxidation and corrosion of the metal cavity at high temperatures and extend the service life of the equipment. Compared with the vacuum layer, nitrogen filling is easier to maintain (the vacuum layer may fail due to leakage). The design of the annular cavity 121 can also absorb the thermal expansion stress of the infusion pipe 52 and reduce the risk of structural cracking.

[0053] The thermal conductivity of aluminum silicate fiber (ceramic fiber) is low (0.1 - 0.2 W / m·K), which can further block the heat not completely isolated by the nitrogen layer. It is heat-resistant (1000 - 1400°C) and suitable as an outer protection layer.

[0054] Furthermore, as Figure 5 shown, a casting pipe 7 is fixedly connected to the other side of the second flow channel. A third flow channel 71 is provided inside the casting pipe 7, and a heating seat 74 is arranged outside the casting pipe 7. A plurality of second heating elements 75 are arranged inside the heating seat 74. Among them, the casting pipe 7 also mainly functions to convey the ferroalloy solution. The length of the casting pipe 7 can be set according to the actual working conditions to convey the ferroalloy solution into the casting mold. Since the casting pipe 7 is relatively far from the liquid storage tank 4, the second heating element 75 can be used to heat the casting pipe 7, so as to better maintain the state and properties of the ferroalloy solution, which is beneficial to improving the quality of the casting product. The second heating element 75 can be a silicon carbide rod or a resistance wire, and of course, it can also be other suitable materials.

[0055] In addition, as Figures 7 - 10 shown, a cut-off groove 76 is provided inside the casting pipe 7, and the cut-off groove 76 mainly functions as a guide. The upper side of the cut-off groove 76 is communicated with the upper side of the casting pipe 7. The refined ferroalloy casting device further includes: a flow control component 8, which is used to control the flow rate of the alloy solution inside the casting pipe 7.

[0056] Further, the flow control component 8 includes a throttle plate 81, two ear plates 82 and two mounting seats 83. One end of the throttle plate 81 is slidably connected in the throttle groove 76, and the other end thereof extends to the outside of the casting pipe 7. Both sides of the end of the throttle plate 81 extending to the outside of the casting pipe 7 are fixedly connected to the two ear plates 82 respectively. The two mounting seats 83 are fixedly connected to the casting pipe 7. The two ear plates 82 and the two mounting seats 83 are symmetrically distributed about the axis of the casting pipe 7, and the two ear plates 82 and the two mounting seats 83 correspond to each other one by one. A spring 84 is arranged between the corresponding ear plate 82 and the mounting seat 83.

[0057] Specifically, the size of the throttle groove 76 is larger than the cross-sectional size of the third runner 71, and the projection of the third runner 71 in the axial direction of the casting pipe 7 is located within the projection of the throttle groove 76 in the axial direction of the casting pipe 7. In the initial state, the projection of the throttle plate 81 in the axial direction of the casting pipe 7 is located outside the projection of the third runner 71 in the axial direction of the casting pipe 7. That is to say, the throttle plate 81 can completely block the third runner 71 or completely release the third runner 71. During use, when pressing down the throttle plate 81, the throttle plate 81 will move radially along the casting pipe 7 in the throttle groove 76 and gradually seal the third runner 71, so as to control the opening degree of the third runner 71, and further control the flow rate of the ferroalloy solution flowing into the casting mold in the third runner 71, which is more convenient to use. While pressing down the throttle plate 81, the spring 84 will be compressed. When the pressure on the throttle plate 81 is released, the throttle plate 81 will return to its original position under the action of the restoring force of the spring 84.

[0058] As an alternative embodiment, as Figure 8 shown, a guide hole 831 is formed in the mounting seat 83, and a guide rod 821 is fixedly connected to the ear plate 82. The guide rod 821 is vertically arranged and is slidably connected with the guide hole 831, and the spring 84 is sleeved on the guide rod 821. Among them, both the guide hole 831 and the guide rod 821 can play a guiding role. When pressing down the throttle plate 81 and the throttle plate 81 moves upward under the action of the restoring force of the spring 84, the movement of the throttle plate 81 can be made more stable by virtue of the cooperation between the guide rod 821 and the guide hole 831, so that the expansion and contraction of the spring 84 can be made more stable, which is beneficial to extending the service life of the spring 84.

[0059] In addition, as Figure 9 and Figure 10As shown in the figure, the refined ferroalloy casting device further includes: a driving ring 9, which is threadedly connected to the outer wall of the casting pipe 7. On the side of the driving ring 9 facing the intercepting plate 81, there is a first inclined surface 91. The first inclined surface 91 is an annular structure. The distance from the end of the first inclined surface 91 close to the intercepting plate 81 to the axis of the casting pipe 7 is greater than the distance from the end of the first inclined surface 91 far from the intercepting plate 81 to the axis of the casting pipe 7. During use, rotate the driving ring 9, and the driving ring 9 can move along the axial direction of the casting pipe 7. When the first inclined surface 91 on the driving ring 9 contacts the top of the intercepting plate 81, the first inclined surface 91 will exert a downward pressure on the intercepting plate 81, thereby driving the intercepting plate 81 to move downward, and further controlling the opening degree of the third flow channel 71. Since the driving ring 9 is threadedly connected to the casting pipe 7, after adjusting the opening degree of the third flow channel 71, the position of the driving ring 9 can be relatively stably maintained unchanged, making it more convenient to use.

[0060] As an optional embodiment, as shown in the figure, at the other end of the intercepting plate 81, there is a second inclined surface 811. The second inclined surface 811 is also an annular structure, and the second inclined surface 811 is arranged parallel to the first inclined surface 91. Among them, the second inclined surface 811 mainly plays a role in reducing friction. When the first inclined surface 91 contacts the intercepting plate 81, the first inclined surface 91 will first contact the second inclined surface 811 on the intercepting plate 81. The contact between the two mutually parallel first inclined surface 91 and the second inclined surface 811 can make the contact between the driving ring 9 and the intercepting plate 81 smoother, reduce the friction between the driving ring 9 and the intercepting plate 81, and extend its service life.

[0061] A method for using a refined ferroalloy casting device is as follows:

[0062] Step 1: Pour the prepared ferroalloy solution into the liquid storage tank 4.

[0063] Step 2: Adjust the position of the driving ring 9 on the casting pipe 7 according to the actual working conditions to control the opening degree of the third flow channel 71 through the intercepting plate 81.

[0064] Step 3: Start the power component 6, and the power component 6 drives the rotating seat 51 to rotate. When one end of any infusion pipe 52 on the rotating seat 51 close to the first annular seat 2 is communicated with the first flow channel, stop driving the rotating seat 51 to rotate until the preset static time of the rotating seat 51 is reached.

[0065] Step 4: Continue to drive the rotating seat 51 to rotate. When one end of an adjacent infusion pipe 52 close to the first annular seat 2 is communicated with the first flow channel, and one end of the previous infusion pipe 52 storing the ferroalloy solution close to the second annular seat 3 is communicated with the second flow channel, stop driving the rotating seat 51 to rotate until the preset static time of the rotating seat 51 is reached. The above preset time can be set according to the actual working conditions.

[0066] Step Five: Repeat the above Step Three and Step Four.

[0067] The above has described the embodiments of this example. However, this example is not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative rather than restrictive. Under the inspiration of this example, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of this example.

Claims

1. A refined casting device for ferroalloy, characterized in that, Comprising: A base (1) with a first annular seat (2) and a second annular seat (3) spaced apart thereon. The first annular seat (2) and the second annular seat (3) are concentrically arranged. The edges of the first annular seat (2) and the second annular seat (3) are respectively provided with a first flow channel and a second flow channel penetrating axially along them. A liquid storage tank (4) which is arranged on the base (1). The bottom of the liquid storage tank (4) is provided with a liquid outlet pipe (41). The liquid outlet of the liquid outlet pipe (41) is vertically arranged and communicated with one side of the first flow channel. An intermittent infusion assembly (5) which includes: a rotating seat (51) and a plurality of infusion tubes (52). The rotating seat (51) is rotatably connected between the first annular seat (2) and the second annular seat (3) and is concentrically arranged with the first annular seat (2). A plurality of infusion tubes (52) are axially penetrated through the rotating seat (51) along the axis of the rotating seat (51). The two ends of the infusion tube (52) are respectively in planar contact with the first annular seat (2) and the second annular seat (3). When the rotating seat (51) rotates, the two ends of the infusion tube (52) are selectively communicated with the other side of the first flow channel and one side of the second flow channel respectively.

2. The refined casting device for ferroalloy according to claim 1, characterized in that, The refined ferroalloy casting device further includes: a gradient heat preservation assembly (100), and the gradient heat preservation assembly (100) includes: a high-temperature section protection assembly (110) and a medium-temperature section protection assembly (120). The high-temperature section protection assembly (110) includes: a heat preservation layer (111) and a first heating element (112). The heat preservation layer (111) is arranged on the side of the rotating seat (51) close to the first annular seat (2). From the inside to the outside, it is successively: a silicon carbide ceramic layer (1111), a ceramic fiber layer (1112) and a zirconia fiber layer (1113). The first heating element (112) is arranged inside the rotating seat (51). The medium-temperature section protection assembly (120) includes: an annular cavity (121) opened inside the rotating seat (51). Nitrogen is arranged in the annular cavity (121). A layer of aluminosilicate fiber (122) is arranged outside the annular cavity (121).

3. The refined casting device for ferroalloy according to claim 1, characterized in that, The base (1) includes: two mutually parallel first vertical plates (11) and second vertical plates (12), and two mutually parallel first horizontal plates (13) and second horizontal plates (14). The first vertical plate (11) and the second vertical plate (12) are fixedly connected to the upper side of the first horizontal plate (13). The second horizontal plate (14) is fixedly connected to the upper side of the first vertical plate (11). The liquid storage tank (4) is fixedly connected to the upper side of the second horizontal plate (14). The first annular seat (2) is fixedly connected to the first vertical plate (11). The second annular seat (3) is fixedly connected to the second vertical plate (12).

4. The refined casting device for ferroalloy according to claim 3, characterized in that, A plurality of the infusion tubes (52) are annularly arrayed about the axis of the rotating seat (51).

5. The fine casting device for ferroalloy according to claim 3, characterized in that, The refined ferroalloy casting device further includes: a power assembly (6), the power assembly (6) is used to drive the rotating seat (51) to rotate, and the power assembly (6) includes: a gear ring (61), a gear (62), a motor (63) and a frame (64), the frame (64) is fixedly connected to the base (1), the motor (63) is fixedly connected to the frame (64) and the output end of the motor (63) is fixedly connected to the gear (62), the gear ring (61) is fixedly connected to the outer wall of the rotating seat (51), and the gear ring (61) is adapted to the gear (62).

6. The fine casting device for ferroalloy according to claim 5, characterized in that, On the other side of the second flow channel, a casting pipe (7) is fixedly connected. A third flow channel (71) is formed in the casting pipe (7). A heating seat (74) is arranged on the outer side of the casting pipe (7), and a plurality of second heating elements (75) are arranged inside the heating seat (74).

7. The fine casting device for ferroalloy according to claim 6, characterized in that, A throttling groove (76) is formed inside the casting pipe (7). The upper side of the throttling groove (76) communicates with the upper side of the casting pipe (7). The refined ferroalloy casting device further includes: a flow control assembly (8), which is used to control the flow rate of the alloy solution inside the casting pipe (7); The flow control assembly (8) includes: a throttling plate (81), two ear plates (82) and two mounting seats (83). One end of the throttling plate (81) is slidably connected inside the throttling groove (76), and the two sides of the other end thereof are respectively fixedly connected to the two ear plates (82). The two mounting seats (83) are fixedly connected to the casting pipe (7). The two ear plates (82) and the two mounting seats (83) are symmetrically distributed about the axis of the casting pipe (7), and the two ear plates (82) and the two mounting seats (83) correspond one by one. A spring (84) is arranged between the corresponding ear plate (82) and the mounting seat (83).

8. An accurate casting device for ferroalloy according to claim 6, characterized in that The size of the throttling groove (76) is larger than the cross-sectional size of the third flow channel (71), and the projection of the third flow channel (71) in the axial direction of the casting pipe (7) is located inside the projection of the throttling groove (76) in the axial direction of the casting pipe (7). In the initial state, the projection of the throttling plate (81) in the axial direction of the casting pipe (7) is located outside the projection of the third flow channel (71) in the axial direction of the casting pipe (7).

9. The ferroalloy fine casting device according to claim 6, characterized in that, The refined ferroalloy casting device further includes: a driving ring (9), the driving ring (9) is threadedly connected to the outer wall of the casting pipe (7). A first inclined surface (91) is arranged on the side of the driving ring (9) facing the throttling plate (81). The distance from the end of the first inclined surface (91) close to the throttling plate (81) to the axis of the casting pipe (7) is greater than the distance from the end of the first inclined surface (91) far from the throttling plate (81) to the axis of the casting pipe (7); and / or. A second inclined surface (811) is arranged at the other end of the throttling plate (81), and the second inclined surface (811) is arranged parallel to the first inclined surface (91).

10. A method for using a refined casting device for ferroalloy, which adopts a refined casting device for ferroalloy described in claim 4, and is characterized in that, The using steps are as follows: Step 1: Pour the prepared ferroalloy solution into the liquid storage tank (4); Step 2: Adjust the position of the driving ring (9) on the casting pipe (7) according to the actual working conditions, so as to control the opening degree of the third flow channel (71) through the throttle plate (81); Step 3: Start the power assembly (6), and the power assembly (6) drives the rotating seat (51) to rotate. When one end of any infusion pipe (52) on the rotating seat (51) close to the first annular seat (2) is communicated with the first flow channel, stop driving the rotating seat (51) to rotate until the preset stationary time of the rotating seat (51) is reached; Step 4: Continue to drive the rotating seat (51) to rotate. When one end of an adjacent infusion pipe (52) close to the first annular seat (2) is communicated with the first flow channel, and one end of the previous infusion pipe (52) storing ferroalloy solution close to the second annular seat (3) is communicated with the second flow channel, stop driving the rotating seat (51) to rotate until the preset stationary time of the rotating seat (51) is reached; Step 5: Repeat the above Steps 3 and 4.

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