Stream inoculation device

Abstract

A stream inoculation device comprises an inoculation hopper, an inoculation hopper hanging frame, a supporting shaft and a hanging shaft, wherein the supporting shaft and the hanging shaft are arranged on a ladle. The ladle comprises a gantry crane, a ladle body and a ladle body tilting shaft, and a ladle nozzle is arranged on the ladle body; the inoculation hopper hanger is erected on the ladle through the supporting shaft and the hanging shaft; the appearance of the inoculation hopper comprises but is not limited to one or a combination of at least two of a sphere, a cone, a cylinder, a halfpace body, a regular polygon or a halfpace body; eccentric shafts are arranged on the two sides of the inoculation hopper and hung on the inoculation hopper hanging frame. The inoculation hopper hanger always translates along with the movement of the axis position of the supporting shaft, and when the ladle body pours out molten iron at different inclination angles, an inoculant flowing out of the inoculation hopper is always right above a ladle nozzle of the ladle; the falling point of the inoculant is always kept right above the ladle nozzle, outflow is stable, operation of a specially-assigned person is not needed during pouring, the outflow amount can be switched according to needs when multiple castings are poured in the same ladle, and use is convenient, safe and reliable.

Description

Technical Field

[0001] The present application relates to the technical field of casting and pouring, and in particular to a flow inoculation device. Background Art

[0002] In the casting (ductile iron and gray iron) industry, the inoculation process is an essential processing link in the entire casting process. Because good inoculation results can effectively control (eliminate) free carbides (chilled cast iron) in the matrix structure, refine grains, and make various inclusions dispersed to eliminate (reduce) their influence on the structure; it can also effectively control the shape and quantity of graphite, and under appropriate casting conditions, make full use of the self-expansion effect of graphite precipitation during solidification, which is conducive to reducing the shrinkage tendency inside the casting; it plays an indispensable role in improving the comprehensive performance of materials, promoting the soundness of the inside of castings, realizing low-energy consumption cast production of various grades of castings, and reducing cross-section sensitivity and improving subsequent machinability.

[0003] The decay phenomenon is an inevitable characteristic of inoculation. The timing of inoculation, the method and amount of inoculation, etc., will not only directly determine the realization of a good inoculation effect, but also affect safety and related material and labor costs. The timing of molten iron inoculation includes four time nodes: when the molten iron is out of the furnace (spheroidizing treatment), when transferring (pouring from the iron ladle or spheroidizing ladle into the pouring ladle), when pouring (from the molten iron ladle into the pouring cup), and in-mold inoculation before flowing into the inner gate. The shorter the decay time is, the less inoculation amount is required to achieve the same inoculation effect; the later it is, the more stringent the operating conditions required to achieve a good inoculation effect (quantitative, uniform addition, sufficient melting, diffusion). Long-term practice has shown that, except for special circumstances where in-mold inoculation must be used, in-mold inoculation is the best choice for quality and cost.

[0004] At present, except for some large-scale automatic assembly line castings with conditional automatic inoculation, the inoculation devices used by a large number of small and medium-sized casting enterprises with multiple varieties and small batches are roughly as follows: the operator holds a funnel for inoculation, which requires special personnel to operate, and the risk of scalding under the high-temperature molten iron for a long time is very high; or the inoculation funnel is set above the pouring cup or the inoculation block is placed in the pouring cup with a door, but this solution is difficult to fully melt and diffuse the inoculation block, and the various preparations are high-intensity, and the frequent upper and lower casting molds have a high safety risk; in addition, various conventional funnels are used. Bucket, due to long-term heat radiation from molten iron, the flow rate cannot be adjusted immediately to achieve quantitative continuous use requirements when the same bag of molten iron is poured into multiple castings; or the near-fluid characteristics of powdered inoculant are applied, and a special hopper is used to rigidly fix the inoculant in the bag. When the bag is tilted and returned, the inoculant flows out from the upper horizontal port and stops flowing to achieve automatic flow. For a bag of molten iron, quantitative inoculation can be achieved, but powdered inoculant is only a near-fluid after all. When molten iron is poured out at the same flow rate, the amount of inoculant poured fluctuates greatly and the uniformity is insufficient. When one bag is poured into multiple boxes, the actual inoculant amount of castings in each box cannot be controlled.

[0005] The design of a flow inoculation device that ensures quantitative and uniform addition during pouring and sufficient melting and diffusion after addition has always been a technical problem that needs to be solved urgently. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, the present application provides a flow-following inoculation device in which the intersection point of the inoculant and the molten iron flow is always maintained at the ladle mouth during pouring, the outflow of the inoculant is stable, no special operator is required during pouring, and the outflow rate can be switched as needed when pouring multiple castings in the same ladle. The device is easy to use, safe and reliable.

[0007] In order to solve the above technical problems, the technical solution adopted in the present application is: a flow-based inoculation device, the structure of which includes an inoculation hopper, an inoculation hopper hanger, and a support shaft and a hanging shaft welded on the molten iron ladle; the molten iron ladle includes a gantry hanger, a ladle body and a ladle body tilting shaft, the gantry hanger is rotatably connected to the ladle body through the ladle body tilting shaft, the hanging shaft is arranged on the gantry hanger, and the ladle body is provided with a ladle nozzle for guiding the molten iron when pouring out (specifically, the flow direction of the molten iron in the ladle nozzle is perpendicular to the gantry hanger); the inoculation hopper hanger is mounted on the molten iron ladle through the support shaft and the hanging shaft on the ladle; the shape of the inoculation hopper includes but is not limited to a spherical The inoculant is a spherical body, a cone, a cylinder, a terraced body, a regular polygon or a terraced body, or a combination of at least two of them; eccentric shafts are arranged on both sides of the inoculant hopper, and the eccentric shafts are hung on the inoculant hopper hanger, and the inoculant hopper can rotate along the eccentric shafts, so as to realize the opening and closing action of adding the inoculant by changing the horizontal angle of the discharge port on the inoculant hopper; the inoculant hopper hanger is relative to the gantry hanger of the ladle, and always moves horizontally with the movement of the axial position of the support shaft, and when the ladle pours out the molten iron at different inclination angles, the inoculant flowing out of the inoculant hopper is always directly above the ladle mouth.

[0008] By adopting the above scheme, after the inoculation device is erected, during the pouring process: the gantry hanger of the molten iron ladle is always vertical to the ground; the inoculation gantry always moves horizontally with the movement of the ladle nozzle support axis position relative to the gantry hanger of the molten iron ladle; the position of the eccentric axis of the inoculation hopper is fixed relative to the ladle nozzle support axis position; when the molten iron ladle is poured out at different inclination angles, the intersection point of the inoculant flowing out of the inoculation hopper and the molten iron is always at the same position of the ladle nozzle; the inoculation hopper and the inoculation hopper hanger are conveniently and dynamically connected to the molten iron ladle only through the four points of the support shaft and the hanging shaft, and there is no interference between the inoculation device and the molten iron ladle during the whole pouring process; when the inoculant is added before and after the pouring starts, there is no interference in the slag collection, slag scooping and slag scraping operations on the surface of the molten iron; when the molten iron ladle is tilted to pour out the molten iron and the inoculant is added, the adverse effect of the powdered inoculant being scattered by air convection during the falling process is small.

[0009] Furthermore, the inoculation hopper has an outer shape that is relatively round and blunt at one end and relatively sharp at the other end that becomes smaller along the axis, and one or more cross-sections are a water drop or nearly water drop-shaped geometric structure; or the inoculation hopper has a water drop-shaped structure; the discharge port is arranged at the tip of the inoculation hopper, and a rotary disc flow regulating device is arranged at the discharge port; the addition and stopping of the inoculant are completed by pulling the slag stop rod or by pressing the start button of the controller; the inoculation device body composed of the inoculation hopper and the inoculation hopper bracket is connected only by the four connections with the support shaft and the hanging shaft The inoculant is hung at four points (two supporting shafts and two hanging shafts thus form four hanging points) to achieve dynamic and stable connection with the ladle, and there is no interference between the inoculation device body and the ladle during the entire pouring process; adopting this scheme, a structure similar to a water drop-shaped inoculation hopper is set, which is more conducive to the discharge and closing state of the hopper. In addition, the turntable flow regulating device can be rotated, so that the flow rate can be adjusted through the structure when the inoculant is drawn out. Inoculants with different particle sizes can be effectively adapted, and different inoculant flows can be switched as needed when casting multiple castings in the same ladle, which has a wide range of adaptability.

[0010] Furthermore, the turntable flow regulating device can rotate circumferentially relative to the discharge port, and is provided with a plurality of flow holes of different apertures, which are used to rotate and align with the discharge port to adjust and control the flow rate of the inoculant. With the above structure, the position of the flow holes can be adjusted by the circumferential rotation of the turntable body relative to the rotating shaft, and the flow rate of the inoculant can be controlled by different sizes of the flow holes.

[0011] Furthermore, the turntable flow regulating device includes a turntable body, and the plurality of flow holes are distributed on the turntable body. The turntable body is rotatably connected to the inoculant hopper via a rotating shaft, and the turntable body is also provided with a plurality of notches. By adopting this scheme, the turntable body can be conveniently rotated to realize the control of the inoculant flow rate, and the notch setting makes it convenient to plug in the toggle device from the notch, thereby driving the turntable body to rotate circumferentially.

[0012] Furthermore, the support shaft is welded on both sides of the ladle mouth, and the hanging shaft is welded on the gantry hanger, and the support shaft and the hanging shaft provide frame connection points for the inoculation hopper hanger; the inoculation hopper hanger comprises an inoculation gantry and a linkage connecting rod, and the inoculation gantry is welded by two support rods on the left and right sides through the middle crossbeam, and a pair of inoculation hopper hooks are welded on the crossbeam, and the inoculation hopper hooks provide hanging points for the eccentric shaft of the inoculation hopper; a support opening is provided at the bottom end of the support rod for abutting and cooperating with the support shaft; the middle and upper parts of the two support rods are arranged parallel to each other, and the spacing between the parallel arrangements is adapted to the width of the gantry hanger of the ladle, and the middle and lower parts of the two support rods are respectively inclined inwards to align with the corresponding side The support shaft is abutted and adapted; the top end of the linkage connecting rod is rotatably connected to the top end of the support rod through the linkage shaft, and a hanging opening is provided on the bottom side of the linkage connecting rod for hanging with the hanging shaft; the above structure is adopted to realize the connection between the inoculation hopper hanger and the molten iron ladle and the gantry hanger, and the inoculation hopper hanger and the support shaft and the hanging shaft are all circumferentially rotatable. In this way, during the tilting process of the molten iron ladle, the inoculation hopper hanger can always maintain a horizontal translation operation mode, so that the inoculation hopper thereon can rotate at different angles following the tilt of the molten iron ladle, thereby realizing the opening, outflow and closing of the internal inoculant, and during the flow of the inoculant, the landing point of the inoculant always corresponds to the mouth of the molten iron ladle, thereby realizing an effective flow-within-the-flow inoculation effect.

[0013] Furthermore, the connecting line of the projections of the axial extension directions of the hanging axis, the supporting axis, the ladle tilting axis and the linkage axis on the plane perpendicular to them is a parallelogram; specifically, the above-mentioned hanging axis of the present application is arranged on the two vertical beams extending vertically of the gantry hanger, the supporting axis is on the outer wall of the main body of the ladle, and is symmetrically arranged on the left and right sides of the ladle mouth, and the linkage axis is located at the top connection of the supporting rod and the linkage connecting rod, so that when the projections of the four axes along the length extension direction of their axes are on the plane perpendicular to their axes, four projection points are formed, and the four projection points The connecting lines are in the shape of a parallelogram, so that the gantry of the inoculation hopper can always move horizontally with the movement of the axial position of the support shaft of the ladle mouth (i.e., the support shaft located on the outer wall of the ladle) relative to the gantry hanger of the ladle. In this way, the position of the eccentric axis of the inoculation hopper is fixed relative to the position of the support axis of the ladle mouth. When the ladle pours molten iron at different inclination angles, the intersection point of the inoculant flowing out of the inoculation hopper and the molten iron can always be at almost the same position of the ladle mouth, thereby achieving an accurate flow-based inoculation effect.

[0014] Furthermore, the lines connecting the projections of the axial extension directions of the hanging shaft, the supporting shaft and the linkage shaft on the plane perpendicular thereto are in the form of a triangle; with the above structure, the three axial projection points formed by the axis center of the supporting shaft of the ladle close to the ladle mouth, the axis center of the linkage shaft and the axis center of the hanging shaft on the gantry hanger of the ladle form a dynamic triangular structure in the process of the ladle body rotating along the ladle body tilting axis, and the triangular structure is relatively stable; and the inoculation hopper hanger is a rigid structure formed by welding two support rods on the left and right sides through a crossbeam, and a convenient dynamic and stable connection with the ladle is achieved by hanging it at four points with the supporting shaft and the hanging shaft, and the operation process is more stable.

[0015] Furthermore, the vertical distance between the support shaft and the upper end surface of the molten iron ladle is 50-100mm; the horizontal distance between the support shaft and the intersection of the inner diameter circle at the molten iron ladle mouth and the line connecting the ladle mouth is 80-160mm, and the vertical minimum height of the support rod is determined by the sinking amount, the distance from the inoculation hopper discharge port to the eccentric shaft, and the maximum height of the molten iron surface height direction between the inoculation hopper discharge port and the molten iron ladle mouth; the distance from the axis center of the hanging shaft on the molten iron ladle gantry hanger to the axis center of the molten iron ladle tilting shaft is equal to the inoculation gantry support The length from the support opening of the support rod to the axis center of the linkage shaft; the length from the axis center of the hanging opening of the linkage connecting rod to the linkage shaft of the inoculation hopper hanger is equal to the projected length from the tilting axis of the molten iron ladle to the support axis of the ladle mouth. By limiting the above structure, the inoculation hopper will not contact or interfere with the molten iron ladle in the closed state and the discharging state to affect its use, so that the inoculation device body and the molten iron ladle have no interference in the whole casting process. When the molten iron ladle is tilted to pour out the molten iron and the inoculant is added, the adverse effect of the powdered inoculant being scattered by air convection during the falling process is controlled.

[0016] Furthermore, a feed port is provided on the inoculation hopper, and stop mechanisms are provided on both sides of the front and rear of the feed port; after the inoculation hopper is hung on the hopper hook, the front stop mechanism and the rear stop mechanism are respectively arranged on the front and rear sides of the hopper hook or the crossbeam in the radial direction, and the stop mechanism can interfere with the crossbeam; with the above structure, the addition and stopping of the inoculant can be achieved only by pulling with a slag stop rod or by pressing the start button of the controller, thereby ensuring that the flow rate is stable when the inoculant is added and the shutoff is reliable when it is closed; the rotation angle of the inoculation hopper can be further limited, and the angle is limited by the stop mechanism at the front and rear to avoid leakage caused by excessive rotation due to the discharge port being too low, and to avoid leakage at the discharge port when inoculation is not required.

[0017] Furthermore, when the inoculant in the inoculant hopper is in a state of flowing out, the tip of the inoculant hopper is vertically downward, and when the inoculant in the inoculant hopper is in a state of stopping being added, the tip of the inoculant hopper extends in a horizontal direction; a plurality of hanging openings are provided on the bottom side of the linkage connecting rod; and insulating holding blocks are provided on both sides of the support rod of the inoculant gantry. With the above structure, the outflow and closing states of the inoculant are controlled by the rotation angle of the inoculant hopper, without the need for manual operation, and are automatically achieved by rotating the inclination angle of the molten iron ladle; and the setting of a plurality of hanging openings can further realize the adjustment of the rotation position of the linkage connecting rod, so that the switching state of the inoculant hopper during the operation process is more accurate; and the setting of the insulating holding blocks facilitates the assembly and disassembly of the inoculant gantry, and avoids harm to operators caused by high temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of the first view of the inoculation hopper of this application.

[0019] Figure 2 This is a structural schematic diagram of the second view of the inoculation hopper of this application.

[0020] Figure 3 This is a structural schematic diagram of the third view of the inoculation hopper of this application.

[0021] Figure 4 A schematic structural diagram of the first view of the support frame of the present application.

[0022] Figure 5 A schematic structural diagram of the second view of the support frame of the present application.

[0023] Figure 6 This is a structural schematic diagram of part of the support frame structure of this application.

[0024] Figure 7 This is a schematic diagram of the structure of the support frame incubation device of this application.

[0025] Figure 8 This is a schematic diagram of the structure of the ladle of this application.

[0026] Fig. 9 This is a schematic diagram of the partial structure of the inoculation hopper in this application, with the discharge port of the molten iron ladle tilted vertically downward.

[0027] Fig.10 Picture of the inoculated hopper for this application.

[0028] Fig.11 Picture of the support frame for this application.

[0029] Fig.12 Picture of the inoculation hopper after assembly with support parts and ladle for this application.

[0030] Fig.13 This is a picture of the discharge status of the inoculation hopper after the ladle is tilted for this application.

[0031] Fig.14 This is a picture of the in-flow inoculation device of this application in the state of molten iron in-flow inoculation.

[0032] As shown in the attached figure: 1. Inoculation hopper, 101. Discharge port, 102. Feed port, 2. Inoculation hopper bracket, 201. Inoculation gantry, 202. Linkage rod, 203. Support rod, 204. Crossbeam, 205. Inoculation hopper hook, 206. Support port, 207. Hanging port, 208. Retaining wall, 3. Iron ladle, 301. Support shaft, 302. Hanging shaft, 303. Gantry crane Frame, 304. Package body, 305. Package body tilting axis, 306. Package mouth, 4. Eccentric shaft, 5. Turntable flow adjustment device, 501. Flow hole, 502. Turntable body, 503. Rotating shaft, 504. Notch, 6. Linkage shaft, 7 Stop mechanism, 701. Front stop mechanism, 702. Rear stop mechanism, 703. Stop straight rod, 704. Ring hook, 8. Heat insulation grip block. DETAILED DESCRIPTION

[0033] The following will combine the embodiments and drawings to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only preferred embodiments, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention;

[0034] It should also be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be another intermediate component, fixed through the intermediate component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be another intermediate component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be another intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] As attached Figure 1-9As shown, it is a flow inoculation device of the present application, the structure of which includes an inoculation hopper 1, an inoculation hopper hanger 2, and a support shaft 301 and a hanging shaft 302 welded on a molten iron ladle 3; the molten iron ladle 3 (the molten iron ladle is used to hold molten iron or molten casting raw material liquid) includes a gantry hanger 303, a ladle body 304 and a ladle body tilting shaft 305, the gantry hanger 303 is rotatably connected to the ladle body 304 through the ladle body tilting shaft 305, the hanging shaft 302 is arranged on the gantry hanger 303, the ladle body 304 is provided with a ladle nozzle 306 for guiding the molten iron when pouring out, and the flow direction of the molten iron in the ladle nozzle 306 is perpendicular to the gantry hanger 303 (for details, refer to the attached Figure 7-8 As shown, the gantry hanger 303 of the iron ladle includes two vertical beams connected to the ladle body through the ladle body tilting axis, and a horizontal beam welded and fixed between the two vertical beams. The gantry hanger is always in a vertical state and does not tilt with the tilt of the iron ladle, playing the role of hoisting and rotating the iron ladle); the inoculation hopper hanger 2 is mounted on the iron ladle 3 through the support shaft 301 and the hanging shaft 302 on the iron ladle 3; the shape of the inoculation hopper 1 includes but is not limited to a sphere, a spherical shape, a cone, a cylinder The inoculant hopper 1 is a body, a terrace body, a regular polygon body or a terrace body, or a combination of at least two of them; eccentric shafts 4 are arranged on both sides of the inoculant hopper 1, and the eccentric shafts 4 are hung on the inoculant hopper hanger 2. The inoculant hopper 1 can rotate along the eccentric shafts 4, so as to change the horizontal angle of the discharge port 101 on the inoculant hopper 1 to realize the opening and closing action of adding the inoculant (specifically, when the inoculant does not need to be added, the inoculant hopper is in a horizontally extended state, and the discharge port 101 thereon is as shown in FIG. Figure 1 As shown in the figure, it is located on the upper surface of the tip; when the ladle is tilted, the inoculant hopper also tilts, and its tip gradually tilts downward, and the inoculant flows out from the discharge port. For details, please refer to the attached Fig. 9 As shown); the inoculation hopper hanger 2 moves horizontally relative to the gantry hanger 303 of the ladle 3, always moving with the movement of the axial position of the support shaft 301 (that is, the hanger of the inoculation hopper tilts along with the inclination of the ladle, but the inoculation hopper thereon also tilts accordingly. For example, when the ladle tilts, the position of the support shaft thereon changes, and at the same time, the hanger of the inoculation hopper also moves horizontally along with the movement of the support shaft, so that the inoculation hopper moves together), the position of the eccentric shaft 4 of the inoculation hopper 1 is almost fixed relative to the support axis of the ladle mouth (that is, the axis of the support shaft 301) (that is, no matter how the ladle tilts, the distance between the support axis and the eccentric shaft hardly changes, but the position between the two moves horizontally accordingly along with the inclination of the ladle), and when the ladle body 304 pours out molten iron at different inclination angles, the inoculant flowing out of the inoculation hopper is always above the ladle mouth of the ladle.

[0036] By adopting the above scheme, after the inoculation device is erected, during the pouring process: the gantry hanger of the molten iron ladle is always vertical to the ground; the inoculation gantry always moves horizontally with the movement of the ladle nozzle support axis position relative to the gantry hanger of the molten iron ladle; the position of the eccentric axis of the inoculation hopper is fixed relative to the ladle nozzle support axis position; when the molten iron ladle is poured out at different inclination angles, the intersection point of the inoculant flowing out of the inoculation hopper and the molten iron is always at the same position of the ladle nozzle; the inoculation hopper and the inoculation hopper hanger are conveniently and dynamically connected to the molten iron ladle only through the four points of the support shaft and the hanging shaft, and there is no interference between the inoculation device and the molten iron ladle during the whole pouring process; when the inoculant is added before and after the pouring starts, there is no interference in the slag collection, slag scooping and slag scraping operations on the surface of the molten iron; when the molten iron ladle is tilted to pour out the molten iron and the inoculant is added, the adverse effect of the powdered inoculant being scattered by air convection during the falling process is small.

[0037] As an example, the attached Figure 1-2 , 7 and 9, the inoculation hopper 1 described in the present application has a relatively rounded shape at one end and a relatively sharp shape at the other end, and one or more cross-sections are in the shape of a water drop or a nearly water drop; specifically, the inoculation hopper of the present application is configured as Figure 1-3 , 7 and 9, the structure similar to a water drop shape with one end being large and round and the other end being small and sharp (i.e., the cross section formed along the direction perpendicular to the extension direction of its thickness, i.e., along the direction perpendicular to the extension direction of its eccentric axis, of the inoculated hopper of this structure is similar to the cross section of a water drop shape with one end being large and the other end being small); the discharge port 101 is arranged at the tip of the inoculated hopper 1 (see Figure 1 The discharge port 101 in the drawing), and the discharge port 101 is provided with a turntable flow regulating device 5; the addition and stopping of the inoculant are completed by pulling the slag blocking rod or pressing the start button of the controller; the device body composed of the inoculant hopper 1 and the inoculant hopper bracket 2 is dynamically and firmly connected with the molten iron ladle 3 only through four points with the support shaft 301 and the hanging shaft 302 (two support shafts and two hanging shafts, thereby forming four hanging points), and there is no interference between the inoculant body and the molten iron ladle 3 during the whole pouring process; adopting this scheme, a water drop-shaped inoculant hopper is set, which is more conducive to the discharge and closing of the hopper. In addition, the turntable flow regulating device can be rotated, so that the flow rate can be adjusted through the structure when the inoculant is drawn out, and inoculants with different particle sizes can be effectively adapted. It can also be realized that different inoculant flow rates can be switched as needed when casting multiple castings in the same ladle, and the adaptability is wide.

[0038] As attached Figure 2-3, 7 and 9, the turntable flow regulating device 5 described in the present application can rotate circumferentially relative to the discharge port 101, and is provided with a plurality of flow holes 501 of different apertures, and the flow holes 501 of different apertures are used to rotate and align with the discharge port 101 to adjust and control the flow rate of the inoculant; by adopting the above structure, the position of the flow holes can be adjusted by the circumferential rotation of the turntable body relative to the rotating axis, and the flow rate of the inoculant can be controlled by different sizes of the flow holes.

[0039] As attached Figure 2-3 , 7 and 9, the turntable flow regulating device described in the present application includes a turntable body 502, and a plurality of flow holes 501 are distributed on the turntable body 502. The turntable body 502 is rotatably connected to the inoculation hopper 1 through a rotating shaft 503, and a plurality of notches 501 are also provided on the turntable body 502; specifically, a rotating shaft can be connected to the inoculation hopper, and then a rotating hole can be provided on the turntable body, and the two can be rotatably connected in cooperation, and the turntable body and the inoculation hopper can be connected on the rotating shaft by a locking bolt to prevent the turntable body from falling off; by adopting this scheme, the turntable body can be conveniently rotated to realize the control of the inoculant flow rate, and the setting of the notch makes it convenient to plug the toggle device from the notch, thereby driving the turntable body to rotate circumferentially.

[0040] As attached Figure 7-8As shown, the support shaft 301 described in the present application is welded on both sides of the ladle mouth 306 (that is, on the outer wall of the ladle body, symmetrically welded on the left and right sides relative to the ladle mouth), the hanging shaft 302 is welded on the gantry hanger 302 (that is, two hanging shafts are symmetrically welded on the outer walls of the two vertical beams of the gantry hanger), and the support shaft 301 and the hanging shaft 302 provide frame connection points for the inoculation hopper hanger 2 (that is, the inoculation hopper hanger is rotatably connected and hung with the molten iron ladle through the support shaft and the hanging shaft); the inoculation hopper hanger 2 includes an inoculation gantry 201 and a linkage connecting rod 202, the inoculation gantry 201 is welded by two support rods 203 on the left and right sides through the middle crossbeam 204, and a pair of inoculation hopper hooks 205 are welded on the crossbeam 204, and the inoculation hopper hooks 205 provide hanging points for the eccentric shaft 4 of the inoculation hopper 1 (that is, symmetrically arranged on both sides of the thickness direction of the inoculation hopper). The eccentric shafts are respectively hung in the inoculation hopper hook and can rotate relative to the hook); the bottom end of the support rod 203 is provided with a support opening 206 for abutting and matching with the support shaft 301 (that is, the support opening is rotatably sleeved on the support shaft); the middle and upper parts of the two support rods 203 are arranged in parallel with each other, and the spacing between the parallel settings is adapted to the width of the gantry hanger 303 of the molten iron ladle 3 (that is, the upper parts of the two support rods are arranged in parallel with each other, and the spacing between the two is adapted to the distance between the two parallel vertical beams extending vertically from the gantry hanger), and the middle and lower parts of the two support rods 203 are respectively tilted inwards to abut and match with the support shaft 301 on the corresponding side (because the lower part of the support rod needs to be rotatably sleeved between the support shaft, and the spacing between the two support shafts symmetrically arranged on the left and right is smaller than the spacing between the two vertical beams, so the lower part of the support rod needs to gradually tilt inwards to match the position of the support shaft; refer to the attached Figure 4 The top of the linkage link 202 is rotatably connected to the top of the support rod 203 through a linkage shaft 6, and a hanging opening 207 is provided on the bottom side of the linkage link 202 for hanging with the hanging shaft 302 (as shown in the attached Figure 6 As shown, the present application extends a retaining wall 208 on the outside of the hanging mouth 207, thereby playing a blocking and protective role, and can prevent the linkage connecting rod from being separated from the hanging shaft); the above structure is adopted to realize the connection between the inoculation hopper hanger and the molten iron ladle and the gantry hanger, and the inoculation hopper hanger and the support shaft and the hanging shaft are all circumferentially rotatable. In this way, during the tilting process of the molten iron ladle, the inoculation hopper hanger can always maintain a horizontal translation operation mode, so that the inoculation hopper thereon follows the tilt of the molten iron ladle to achieve rotation at different angles, thereby realizing the opening, outflow and closing of the internal inoculant, and during the flow of the inoculant, the landing point of the inoculant always corresponds to the mouth of the molten iron ladle, thereby achieving an effective flow-based inoculation effect.

[0041] As an example, the lines connecting the projections of the axial extension directions of the hanging axis 302, the supporting axis 301, the ladle tilting axis 305 and the linkage axis 6 described in the present application on the plane perpendicular to them form a parallelogram; specifically, the above-mentioned hanging axes of the present application are symmetrically arranged on the two vertical beams extending vertically of the gantry hanger, the supporting axis is on the outer wall of the main body of the ladle, and is symmetrically arranged on the left and right sides of the ladle mouth, and the linkage axis is located at the top connection of the support rod and the linkage connecting rod, so that when the projections of the above-mentioned four types of axes along their respective axial length extension directions fall on the plane perpendicular to their axial directions, four projection points, and the lines connecting the four projection points are in a parallelogram structure, so that the gantry of the inoculation hopper can be relative to the gantry hanger of the ladle, and can always move horizontally with the movement of the axial position of the support shaft of the ladle mouth (that is, the support shaft located on the outer wall of the ladle), so that the position of the eccentric axis of the inoculation hopper is fixed relative to the position of the support axis of the ladle mouth, and when the ladle pours molten iron at different inclination angles, the intersection point of the inoculant flowing out of the inoculation hopper and the molten iron can always be at almost the same position of the ladle mouth, so as to achieve the effect of accurate flow-based inoculation.

[0042] As an example, the lines connecting the projections of the axial extension directions of the hanging shaft 302, the supporting shaft 301 and the linkage shaft 6 on the plane perpendicular thereto are in the shape of a triangle; with the above structure, the three axial projection points formed by the axis center of the supporting shaft near the ladle mouth side, the axis center of the linkage shaft and the axis center of the hanging shaft on the gantry hanger of the ladle form a dynamic triangular structure in the process of the ladle body rotating along the ladle body tilting axis, and the triangular structure is relatively stable; and the inoculation hopper hanger is a rigid structure formed by welding two support rods on the left and right sides through a crossbeam, and realizes a convenient dynamic and stable connection with the ladle by hanging it at only four points with the supporting shaft and the hanging shaft, and the operation process is more stable.

[0043] As an example, the distance between the ladle mouth 306 of the ladle 3 described in the present application and the upper end surface of the ladle is 50-100mm, and the distance between the support shaft 301 and the outer diameter of the ladle 3 is 50-150mm; with the above structure, the vertical minimum height of the support rod is determined by the sinking amount, the distance from the inoculation hopper outlet to the eccentric rotating shaft, and the maximum height in the height direction of the molten iron surface at the inoculation hopper outlet and the ladle mouth; the distance from the axis center of the hanging shaft on the ladle gantry hanger to the axis center of the ladle tilting shaft is equal to The vertical height of the inoculation gantry support rod; the length of the inoculation hopper hanger linkage axis from the axial center of the hanging mouth of the linkage connecting rod is equal to the projected length from the ladle tilting axis to the ladle mouth support axis. The above structure is limited so that the inoculation hopper will not contact or interfere with the ladle in the closed state and the discharging state to affect its use, and the inoculation device body and the ladle will not interfere with each other during the whole casting process. When the ladle is tilted to pour out the molten iron and the inoculant is added, the adverse effect of the powdered inoculant being scattered by air convection during the falling process is controlled.

[0044] As attached Figure 1-2 As shown, the inoculation hopper 1 described in the present application is provided with a feed port 102 (as shown in the attached Figure 1 As shown, the discharge port 102 can be located at the highest point of the inoculation hopper in the horizontal state), and a stop mechanism 7 is provided on both the front and rear sides of the feed port 102 (the front and rear sides here, as shown in the accompanying drawings, are located in the direction of the extended surface of the inoculation hopper where the feed port is located); the stop mechanism 7 includes a front stop mechanism 701 and a rear stop mechanism 702, and the inoculation hopper 1 is hung on the inoculation hopper hook 205, and the front stop mechanism 701 and the rear stop mechanism 702 are respectively arranged on the front and rear sides of the inoculation hopper hook 205 or the cross beam 204 in the radial direction, and the stop mechanism 7 can be connected with the cross beam 204. Interference (that is, the stop mechanism can abut against the crossbeam); with the above structure, the addition and stop of the inoculant can be achieved by pulling with the slag stop rod or pressing the start button of the controller, thereby ensuring that the flow rate is stable when the inoculant is added and the cutoff is reliable when it is closed; specifically, the stop mechanism includes a stop straight rod 703, wherein the front stop mechanism 701 also includes an annular hook 704 to facilitate the lifting of the inoculation hopper; the rotation angle of the inoculation hopper can be further limited, and the angle can be limited by the stop mechanism at the front and rear to avoid leakage of the discharge port due to excessive rotation, and to avoid leakage of the discharge port when inoculation is not required.

[0045] As attached Figure 1-2 As shown in FIG. 9 , when the inoculant in the inoculant hopper 1 of the present application is in a flowing out state, the tip of the inoculant hopper 1 is vertically downward ( Fig. 9 ), when the inoculant in the inoculant hopper 1 is stopped, the tip of the inoculant hopper extends horizontally ( Figure 1-2); a plurality of hanging openings 207 are provided on the bottom side of the linkage connecting rod 202; both sides of the support rod 203 of the inoculation gantry 201 are provided with heat-insulating gripping blocks 8 (such as wood or other materials that are not easy to conduct heat); with the above structure, the outflow and closing state of the inoculant are controlled by the rotation angle of the inoculation hopper, without manual operation, and are automatically achieved by rotating the inclination angle of the molten iron ladle; and the setting of a plurality of hanging openings can further realize the adjustment of the rotation position of the linkage connecting rod, so that the switch state of the inoculation hopper during the operation process is more accurate; and the setting of the heat-insulating gripping blocks facilitates the assembly and disassembly of the inoculation gantry, and avoids the high temperature environment from causing harm to the operator.

[0046] As attached Figure 10-14 As shown, there are pictures of the inoculation hopper and the flow inoculation device actually used in the workshop of the present application in the state of flow inoculation of molten iron; from these real pictures, it can be seen that the flow inoculation device of the present application can conveniently realize the process of flow inoculation, without the need for workers to hold the inoculation hopper, thereby reducing safety hazards and improving production efficiency.

[0047] The specific working principle and process of this structure of the present application are as follows: when the inoculant is added, the intersection point of the inoculant and the molten iron flow is always at the location of the molten iron flow outlet of the ladle, that is, the ladle nozzle, and the inoculant is added at a fixed point; the optimal controllable conditions for fixing melting and diffusion. On the vertical plane of the center line of the ladle nozzle direction, the projections of the movable connecting rod axis, the ladle nozzle support rotation axis, the gantry hanging column support rotation axis and the ladle rotation axis, four points form a parallelogram; when the parallelogram is deformed, the opposite sides always remain parallel, and at any time and state after the ladle is lifted, the gantry hanging column always remains vertical, so at any time when the ladle rotates, the inoculant gantry is always on the vertical line of the designed confluence point. The parallelogram principle is the basic guarantee for realizing this characteristic work efficiency; during the pouring process, the operation of controlling the inflow and stop of the inoculant as needed can be completed conveniently, reliably and safely by remote control (or pushing and pulling with a slag blocking rod). The teardrop-shaped hopper welded with an eccentric shaft and a flow stop positioning lever, after rotating to change the position of the center of gravity, automatically rotates around the eccentric shaft under the action of gravity, in the direction of moving the center of gravity downward, until it is blocked and forms a stable state. The eccentric return principle is the basic guarantee for achieving this characteristic work efficiency; during the pouring process, the same package of molten iron can be used to adjust the flow of the inoculant for different products, and the operation can be completed quickly, reliably and safely by remote control (or) using a slag stop rod. The (exposed toothed disc-shaped) rotating flow regulating plate is installed outside the fixed discharge port at the tip of the teardrop-shaped hopper; the discharge port is the same width as the adjustment plate tooth pitch, and different apertures are drilled on each tooth as the flow bayonet; (the peripheral tooth structure creates the best conditions for pulling and turning); the center axis of the regulating plate is fixed on the hopper, and it is self-positioned after pulling and turning; the round characteristics and powdery semi-fluid characteristics are the basic guarantee for achieving this characteristic work efficiency.

[0048] The inoculation device of the present application has the following advantages and beneficial effects:

[0049] 1. Improve quality: Using the device of the present application for in-stream inoculation can significantly improve the inoculation effect, effectively improve the quality and quality stability of castings; the stringent operating conditions required for achieving good inoculation effects (quantitative, uniform addition, sufficient melting, diffusion) can be continuously and controllably achieved.

[0050] 2. Reduce safety risks: Use the inoculation device of the present application for flow inoculation. The inoculation device is installed before pouring, removed after pouring, and the hopper is charged, all of which are performed at a fixed point on the ground, eliminating the high operating risks of relevant personnel specifically for inoculation. During the pouring process, the addition, stop and flow switching of the inoculant can be completed remotely by an electromechanical device or (with a slag blocking rod) in the safe pouring operation area, minimizing the risk of scalding.

[0051] 3. Improve labor efficiency and reduce labor and material costs: Use the inoculating device of the present application for on-stream inoculation, and the operations of hopper feeding, flow switching, and combining and separating the inoculating device from the ladle are all completed within the waiting time (necessary but ineffective) of non-pouring personnel, and the related operations can be completed in a short time with light physical requirements; during the pouring process, the operations of adding and stopping the inoculant are also carried out using the waiting time of the slag blocking personnel (i.e., the waiting time for inoculation), and are short in time and low in labor intensity, and the labor cost generated specifically for the inoculation operation during the pouring process can be completely eliminated; adopt reliable on-stream inoculation, and achieve good inoculation effect with a lower amount of inoculant added. In the early iron-discharging (spheroidizing treatment) process, the large amount of inoculant added in the subcontracting process and the higher price can be reduced (or cancelled), and replaced by relatively low-priced ordinary ferrosilicon.

[0052] 4. The inoculation device of the present application has a simple structure, high reliability, and strong versatility. The same set of devices can be used for multiple packages continuously, which minimizes the difficulty of production and the requirements for storage space. It is installed after iron tapping (spheroidizing treatment) and removed after iron pouring, which has no effect on the iron tapping (spheroidizing treatment) process. Reasonable frame design does not interfere with all the original operations required during the casting process, such as slag removal, slag blocking, and temperature measurement of the molten iron in the ladle.

[0053] 5. The inoculation structure of the present application is particularly suitable for casting enterprises that have difficulty in realizing fixed-point automated pouring, relatively low intelligence, low cost budget, and have high requirements for the comprehensive physical and chemical properties of castings.

Claims

1. A flow inoculation device, characterized in that: The structure of the device includes an inoculation hopper, an inoculation hopper hanger, and a support shaft and a hanging shaft welded on the ladle; the ladle includes a gantry hanger, a ladle body and a ladle body tilting shaft, the gantry hanger is rotatably connected to the ladle body through the ladle body tilting shaft, the hanging shaft is arranged on the gantry hanger, and the ladle body is provided with a ladle nozzle for guiding when pouring out molten iron; the inoculation hopper hanger is mounted on the ladle through the support shaft and the hanging shaft on the ladle; the shape of the inoculation hopper includes but is not limited to a sphere, a spherical shape, a cone, a cylinder, a terrace, a regular polygon or a terrace. One or a combination of at least two; eccentric shafts are arranged on both sides of the inoculation hopper, and the eccentric shafts are hung on the inoculation hopper bracket, and the inoculation hopper can rotate along the eccentric shafts, so as to realize the opening and closing action of adding inoculant by changing the horizontal angle of the discharge port on the inoculation hopper; the inoculation hopper bracket always moves horizontally with the movement of the axial position of the support shaft relative to the gantry hanger of the iron ladle, and when the ladle pours out the molten iron at different inclination angles, the inoculant flowing out of the inoculation hopper is always directly above the ladle mouth.

2. The in-stream inoculation device according to claim 1, characterized in that: The inoculation hopper has an outer shape of a relatively rounded shape at one end and a relatively sharp shape at the other end with one or more cross-sections in the shape of a water drop or nearly a water drop; the discharge port is arranged at the tip of the inoculation hopper, and a turntable flow regulating device is arranged at the discharge port; the addition and stopping of the inoculant are completed by pulling out the slag stop rod or by pressing the start button of the controller; the inoculation device body composed of the inoculation hopper and the inoculation hopper hanger is dynamically and firmly connected to the molten iron ladle only through the four points of the support shaft and the hanging shaft, and there is no interference between the inoculation device body and the molten iron ladle during the entire casting process.

3. The in-stream inoculation device according to claim 2, characterized in that: The rotary disc flow regulating device can rotate circumferentially relative to the discharge port. The rotary disc flow regulating device is provided with a plurality of flow holes with different apertures. The flow holes with different apertures are used to rotate and align with the discharge port to adjust and control the flow of the inoculant.

4. The in-stream inoculation device according to claim 2, characterized in that: The turntable flow regulating device comprises a turntable body, a plurality of flow holes are distributed on the turntable body, the turntable body is rotatably connected to the inoculation hopper via a rotating shaft, and a plurality of notches are also arranged on the turntable body.

5. The in-stream inoculation device according to claim 4, characterized in that: The support shaft is welded on both sides of the ladle mouth, and the hanging shaft is welded on the gantry hanger, and the support shaft and the hanging shaft provide frame connection points for the inoculation hopper hanger; the inoculation hopper hanger includes an inoculation gantry and a linkage connecting rod, and the inoculation gantry is welded by two support rods on the left and right sides through the middle crossbeam, and a pair of inoculation hopper hooks are welded on the crossbeam, and the inoculation hopper hooks provide hanging points for the eccentric shaft of the inoculation hopper; a support opening is provided at the bottom end of the support rod for abutting and matching with the support shaft; the middle and upper parts of the two support rods are arranged parallel to each other, and the spacing between the parallel arrangements is adapted to the width of the gantry hanger of the molten iron ladle, and the middle and lower parts of the two support rods are respectively inclined inwards to abut and match with the support shaft on the corresponding side; the top end of the linkage connecting rod is rotatably connected to the top end of the support rod through the linkage shaft, and a hanging opening is provided on the bottom side of the linkage connecting rod for hanging with the hanging shaft.

6. The in-stream inoculation device according to claim 5, characterized in that: The connecting line of the projections of the axial extension directions of the hanging axis, the supporting axis, the enclosure tilting axis and the linkage axis on the plane perpendicular thereto forms a parallelogram.

7. The in-stream inoculation device according to claim 6, characterized in that: The connecting line of the projections of the axial extension directions of the hanging shaft, the supporting shaft and the linkage shaft on the plane perpendicular thereto is a triangle.

8. The in-stream inoculation device according to claim 6, characterized in that: The vertical distance between the support shaft and the upper end surface of the molten iron ladle is 50-100 mm; the horizontal distance between the support shaft and the intersection of the inner diameter circle at the molten iron ladle mouth and the ladle mouth connecting line is 80-160 mm.

9. The in-stream inoculation device according to claim 8, characterized in that: The inoculation hopper is provided with a feed port, and stop mechanisms are provided on both the front and rear sides of the feed port; the stop mechanism includes a front stop mechanism and a rear stop mechanism, and the inoculation hopper is hung on the hopper hook, and the front stop mechanism and the rear stop mechanism are respectively arranged on the front and rear sides of the hopper hook or the crossbeam in the radial direction, and the stop mechanism can interfere with the crossbeam.

10. The in-stream inoculation device according to claim 1, characterized in that: When the inoculant in the inoculation hopper is in a state of flowing out, the tip of the inoculation hopper is vertically downward, and when the inoculant in the inoculation hopper is in a state of stopping being added, the tip of the inoculation hopper extends horizontally; a plurality of hanging openings are provided on the bottom side of the linkage connecting rod; and heat-insulating gripping blocks are provided on both sides of the support rod of the inoculation gantry.

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