Molten iron runner structure with splash-proof baffle

Abstract

The molten iron runner structure comprises a molten iron runner body, a buffer pool is arranged at one end of the molten iron runner body, an iron flowing opening is formed in the top end of the first side of the buffer pool, the second side of the buffer pool is a molten iron tank tipping side, and the splash-proof baffle structure used for physically preventing molten iron from splashing is arranged above the buffer pool. The splash-proof baffle structure comprises a front baffle located on the first side of the buffer pool and extending upwards, the two sides of the front baffle are connected with side baffles extending towards the second side of the buffer pool, and the bottom ends of the front baffle and the side baffles are connected with the top ends of the side walls of the buffer pool in a sealed abutting mode. Refractory lining structures are arranged on the inner walls of the front baffle and the side baffles. The splash-proof baffle structure is arranged on the buffer pool of the molten iron runner, and the splashing phenomenon of molten iron in the flowing process is effectively reduced in a physical blocking mode, so that the yield of the molten iron is improved, the production safety is guaranteed, and meanwhile, the cleaning work of a production field is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of cast iron, in particular to a molten iron flow channel structure with a splash-proof baffle. Background Art

[0002] The iron casting machine is a device that regulates the rhythm of ironmaking and its subsequent processes. During the iron casting process, the molten iron will splash due to the large height difference between the molten iron tank mouth and the molten iron flow channel. This splashing phenomenon not only seriously reduces the effective utilization rate of the molten iron and causes waste of resources, but also the splashing high-temperature molten iron may pose a safety threat to the surrounding staff and equipment. What is more difficult is that after the splashed molten iron cools and solidifies, it brings considerable challenges to the on-site production safety management and equipment maintenance, and the cleaning work becomes extremely difficult.

[0003] Prior art 1: A dovetail iron flow trough for buffering and splash-proofing of cast iron machine, which is designed as a two-section overlapping dovetail structure. It includes a buffering iron receiving trough at the head, a transitional iron flow trough in the middle, and a dovetail iron flow nozzle at the tail. The molten iron tank is tipped over, and the molten iron flows into the iron receiving trough through the molten iron tank nozzle, and then flows into the transitional iron flow trough in the middle to adjust the flow speed of the molten iron, and finally flows into the cast iron mold evenly through the dovetail iron flow nozzle. However, there are no protective measures at the location where the molten iron falls, and the molten iron splash phenomenon is very serious.

[0004] The first existing technology uses a multi-stage, buffering method to control the flow rate of molten iron and reduce the splashing during the flow process. However, this method cannot reduce the splashing of molten iron when it falls. According to the feedback from the on-site feedback of the engineering projects using this flow trough form, the molten iron splashes seriously during iron casting, the molten iron loss rate is very high, and it is very difficult to clean the iron afterwards.

[0005] Prior art 2: A molten iron casting anti-splashing device for a cast iron machine, comprising a molten iron flow channel, a molten iron flow channel spout is provided with an anti-splashing groove to shield the flow channel spout. The anti-splashing groove blocks the molten iron from splashing in all directions, and the molten iron automatically falls into the cast iron mold after being blocked.

[0006] The second prior art reduces the splashing of molten iron by blocking. Since the distance between the launder spout and the cast iron mold is relatively close, the drop height of the molten iron is small, and there is only slight splashing. However, the drop height from the molten iron tank spout to the buffer tank is large, and the splashing is serious, but there is no protection. Therefore, the anti-splashing effect of the second prior art is very limited.

[0007] Therefore, the inventor, relying on his many years of experience and practice in related industries, proposes a molten iron launder structure with a splash guard to overcome the defects of the prior art. Utility Model Content

[0008] The utility model aims to provide a molten iron flow trough structure with a splash guard. The splash guard structure is arranged on the buffer pool of the molten iron flow trough to effectively reduce the splashing of molten iron during the flow process by means of physical barrier, thereby improving the recovery rate of molten iron, ensuring production safety, and simplifying the cleaning work of the production site.

[0009] The purpose of the utility model is achieved in this way. A molten iron flow trough structure with a splash guard comprises a molten iron flow trough body, a buffer tank is arranged at one end of the molten iron flow trough body, an iron outlet is arranged at the top of the first side of the buffer tank, the second side of the buffer tank is the tilting side of the molten iron tank, and a splash guard structure for physically blocking molten iron splashing is arranged above the buffer tank, the splash guard structure comprises a front baffle plate located on the first side of the buffer tank and extending upward, both sides of the front baffle plate are connected to side baffle plates extending to the second side of the buffer tank, the bottom ends of the front baffle plate and each of the side baffle plates are sealed and abutted against the top of the side wall of the buffer tank; the inner wall of the front baffle plate and each of the side baffle plates is provided with a refractory lining structure.

[0010] In a preferred embodiment of the present invention, the two side baffles are arranged to be inclined outward from bottom to top.

[0011] In a preferred embodiment of the present invention, the outer walls of the front baffle and each of the side baffles are provided with a rib plate structure for improving the structural strength of the splash baffle.

[0012] In a preferred embodiment of the present utility model, a steel wire mesh is laid on the inner wall of the front baffle and each of the side baffles, and a refractory unit is fixed on the steel wire mesh to form the refractory lining structure.

[0013] In a preferred embodiment of the present invention, a first reinforcing plate and a second reinforcing plate are respectively arranged between the bottom ends of the two side baffles and on the first side and the second side of the buffer pool, the width dimensions of the first reinforcing plate and the second reinforcing plate are both greater than the thickness dimension of the front baffle, and the bottom end of the refractory lining structure is supported against the first reinforcing plate and the second reinforcing plate.

[0014] In a preferred embodiment of the present invention, a first connecting plate connecting the two side baffles and matching the shape of the mouth of the molten iron tank is provided on the second reinforcing plate;

[0015] Second connecting plates are respectively arranged at the top angles of the front baffle and each of the side baffles.

[0016] In a preferred embodiment of the present invention, a notch extending upward is provided at a position of the bottom end of the positive baffle opposite to the iron flow outlet.

[0017] In a preferred embodiment of the present invention, a lifting lug is provided on the front baffle.

[0018] In a preferred embodiment of the present invention, the bottom end of the splash shield structure is connected to the buffer tank via a pin.

[0019] In a preferred embodiment of the present utility model, a ramming material filling unit is provided at the gap between the splash guard structure and the buffer tank.

[0020] As described above, the molten iron launder structure with a splash-proof baffle of the utility model has the following beneficial effects:

[0021] The utility model reduces the splashing of molten iron by means of physical barriers, thereby improving the recovery rate of molten iron and ensuring production safety. In addition, the splash-proof baffle structure can guide and constrain the direction of iron flow, effectively control the partial overflow of molten iron caused by operating errors, reduce the pollution and damage to the environment caused by splashing, and also simplify the cleaning work of the production site. The utility model not only reduces production costs and manpower input, but also optimizes the management and maintenance work of the production site and reduces the difficulty of operation. In addition, it has a simple structure, good molten iron collection effect, and high cost performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0023] Figure 1 It is a schematic diagram of a molten iron flow channel structure with a splash-proof baffle according to the utility model.

[0024] Figure 2 It is a three-dimensional diagram of the splash guard structure of the utility model.

[0025] Figure 3 This is a structural diagram of the splash guard structure of the utility model without a wire mesh.

[0026] Figure 4 It is a schematic diagram of the wire mesh of the present utility model.

[0027] Figure 5 It is a schematic diagram of the refractory unit of the utility model.

[0028] Figure 6 This is a view of the splash-proof baffle structure of the utility model from the tilting side of the molten iron ladle.

[0029] Figure 7 The utility model is a view of the splash-proof baffle structure from the positive baffle side.

[0030] Figure 8 It is a top view of the splash guard structure of the utility model.

[0031] Fig. 9 This is a schematic diagram of the molten iron flow channel body and buffer tank.

[0032] In the figure:

[0033] 1. Molten iron launder body;

[0034] 2. Buffer tank; 21. Iron flow mouth;

[0035] 3. Splash baffle structure; 30. Refractory unit; 31. Front baffle; 311. Slot; 32. Side baffle; 33. Rib plate structure; 34. Wire mesh; 35. First reinforcing plate; 36. Second reinforcing plate; 37. First connecting plate; 38. Second connecting plate; 39. Lifting ear. DETAILED DESCRIPTION

[0036] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0037] The specific implementation of the utility model described herein is only used to explain the purpose of the utility model, and cannot be understood as a limitation of the utility model in any way. Under the guidance of the utility model, technicians can conceive of any possible deformation based on the utility model, which should be regarded as belonging to the scope of the utility model. It should be noted that when an element is referred to as "arranged on" another element, it can be directly on the other element or there can also be a central element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a central element at the same time. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation method.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0039] like Figures 1 to 8As shown, the utility model provides a molten iron flow trough structure with a splash guard, comprising a molten iron flow trough body 1, a buffer tank 2 is arranged at one end of the molten iron flow trough body 1, an iron outlet 21 is arranged at the top of the first side of the buffer tank 2, the second side of the buffer tank 2 is the tilting side of the molten iron tank, and a splash guard structure 3 for physically blocking molten iron splashing is arranged above the buffer tank 2, the splash guard structure 3 comprises a positive baffle 31 which is located on the first side of the buffer tank 2 and extends upward, both sides of the positive baffle 31 are connected to side baffles 32 extending to the second side of the buffer tank, the bottom ends of the positive baffle 31 and each side baffle 32 are sealed and abutted against the top of the side wall of the buffer tank 2; the inner walls of the positive baffle 31 and each side baffle 32 are provided with a refractory lining structure.

[0040] The splash shield structure 3 is a three-sided steel plate structure, which is welded from three steel plates; the tilting side of the molten iron tank is open, and the three sides other than the tilting side of the molten iron tank are effectively protected. Under the premise of no collision, the blocking height of the splashing molten iron is increased as much as possible.

[0041] The size of the part where the splash guard structure 3 connects to the flow channel will be strictly determined according to the actual size of the buffer tank to ensure its adaptability and stability.

[0042] In the molten iron flow channel structure with a splash guard of the utility model, a splash guard structure with a refractory lining structure is provided, which extends upward from the top of the buffer pool, effectively protecting the side surfaces other than the tipping side of the molten iron tank, and can block the splash range of the iron drop point to the maximum extent. When the molten iron tank tips over, the molten iron droplets that may have splashed will be effectively blocked after contacting the baffle.

[0043] The molten iron flows smoothly back to the molten iron flow channel along the inner wall of the splash guard structure, or is cleaned and collected after solidification, thereby reducing the splash loss of molten iron and preventing molten iron droplets from damaging the equipment. This innovative design can not only significantly reduce the waste of molten iron and improve production efficiency, but also reduce the safety risks that may be caused by molten iron splashing. At the same time, it can also reduce the manpower investment of workers in cleaning splashed molten iron and optimize the management and maintenance work of the production site.

[0044] The utility model proposes a molten iron flow trough structure with a splash-proof baffle plate, which reduces the splash of molten iron by means of physical barriers, thereby improving the molten iron recovery rate and ensuring production safety. In addition, the splash-proof baffle plate structure can guide and constrain the direction of the iron flow, effectively control the partial overflow of molten iron caused by operating errors, reduce the pollution and damage to the environment caused by splashing, and also simplify the cleaning work of the production site. The utility model not only reduces production costs and manpower input, but also optimizes the management and maintenance work of the production site and reduces the difficulty of operation. In addition, it has a simple structure, good molten iron collection effect, and high cost performance.

[0045] Further, if Figure 1 , Figure 2 , Figure 3 As shown, the two side baffles 32 are arranged to be tilted outward from bottom to top. The splash shield structure 3 is an open structure, and the side baffles are in an outward expansion form, forming an opening that meets the requirements of the ladle mouth of the ladle at the second side of the buffer tank 2 (the ladle tipping side).

[0046] The size design of the opening is determined based on the width of the ladle's mouth. Since the size of the ladle mouth will be adjusted according to user needs and cannot be unified, the size of the opening must be accurately set based on the specific parameters of the ladle in the actual project. After obtaining accurate data on the width of the ladle mouth, a three-dimensional simulation experiment is used to finely adjust the size of the opening to ensure that it will not collide.

[0047] Further, if Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 As shown, the outer walls of the front baffle 31 and each side baffle 32 are provided with a rib plate structure 33 for improving the strength of the splash shield structure 3. The rib plate structure 33 is laid in a "well" shape to stabilize the structure and improve the overall strength of the splash shield structure 3.

[0048] Further, if Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the inner wall of the front baffle 31 and each side baffle 32 is paved with a steel mesh 34, and a refractory unit is fixed on the steel mesh 34 to form a refractory lining structure. On the inner side of the splash shield structure 3, a fine steel mesh 34 is laid, which is mainly used to fix the refractory unit 30 (the refractory unit is a refractory ramming material) to ensure that it will not loosen or fall off during use.

[0049] Further, if Figure 2 , Figure 3 , Figure 6 , Figure 7 As shown, a first reinforcing plate 35 and a second reinforcing plate 36 are respectively arranged between the bottom ends of the two side baffles 32 and located on the first side (buffer pool iron outlet side) and the second side (iron ladle tipping side) of the buffer pool 2. The first reinforcing plate 35 and the second reinforcing plate 36 are narrow steel strips. The width of the first reinforcing plate 35 and the second reinforcing plate 36 are both greater than the thickness of the front baffle 31 (the thickness of the front baffle 31 and the side baffle 32 are the same). The bottom end of the refractory lining structure is supported against the first reinforcing plate 35 and the second reinforcing plate 36. The second reinforcing plate 36 constitutes a small splash-proof baffle to further reduce the splash of molten iron on the second side (iron ladle tipping side).

[0050] The first reinforcing plate 35 and the second reinforcing plate 36 increase the stability and supporting force of the splash shield structure 3 .

[0051] The width of the first reinforcing plate 35 and the second reinforcing plate 36 are both greater than the thickness of the positive baffle 31 , forming a “corner structure” for stacking refractory materials and supporting the wire mesh 34 .

[0052] Further, if Figure 2 , Figure 3 , Figure 6 As shown, a first connecting plate 37 connecting two side baffles and matching the shape of the mouth of the molten iron tank is provided on the second reinforcing plate 36, which plays a certain role in preventing splashing and stabilizing.

[0053] like Figure 8 As shown, second connecting plates 38 are respectively provided at the top angles of the front baffle 31 and each side baffle 32 .

[0054] The splash shield structure 3 is an open structure, and the side shields 32 are in an outwardly expanded form, which is easily deformed or damaged under the impact of molten iron. Second connecting plates 38 are respectively arranged at two angles at the top of the front shield 31 and each side shield 32. The second connecting plates 38 are arranged in a triangular shape to fix the shape and increase stability.

[0055] Further, if Figure 2 , Figure 3 , Figure 6 , Figure 7 As shown, a slot 311 extending upward is provided at the bottom of the positive baffle 31 opposite to the iron flow outlet 21. The slot 311 is a semicircular slot and serves as an emergency. Even if an erroneous operation occurs during the molten iron tipping process, resulting in molten iron overflow, adhesion between devices can be avoided.

[0056] Further, if Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 As shown, a lifting lug 39 is provided on the front baffle 31 (back plate) to facilitate the lifting of the baffle.

[0057] Furthermore, the bottom end of the splash shield structure 3 is connected to the buffer tank 2 via a pin. This installation method is not only simple and convenient, but also easy to replace, which greatly reduces the difficulty of maintenance and overhaul.

[0058] Furthermore, a ramming material filling unit is provided at the gap between the splash shield structure 3 and the buffer tank 2 to improve the sealing and durability of the equipment.

[0059] Specifically, in order to further improve the sealing and durability of the equipment, the gap between the buffer tank 2 and the splash shield structure 3 is filled and compacted with waterless ramming material, which effectively prevents the equipment from sticking during maintenance. The transition between the splash shield structure 3 and the molten iron flow channel body is smoothed with refractory ramming material to facilitate the fall of molten iron droplets.

[0060] When designing the splash guard structure 3, it is necessary to perform a drop height analysis, an iron tapping height analysis, and determine the overall size and style.

[0061] Analysis of drop height: In actual production sites, the splashing problem at the drop point is mainly caused by the significant height difference between the ladle spout and the ladle. Even experienced operators cannot completely avoid splashing when tipping the ladle slowly and evenly.

[0062] To ensure that the baffle can minimize splashing, a detailed on-site inspection was conducted on the drop heights of the two commonly used tipping methods of the cast iron machine. For the convenience of subsequent description, the height difference from the molten iron ladle to the molten iron ladle is referred to as the "drop height".

[0063] There is a certain relationship between the drop height and the cast iron machine tipping equipment. The drop height of the winch tipping method is greater than the drop height of the hydraulic tipping method. This height difference puts forward different requirements for the design of the baffle. When designing the baffle, full consideration must be given to the adaptability to different tipping methods to ensure that the baffle can effectively reduce the splashing of molten iron according to actual conditions.

[0064] Analysis of tapping height: Through the analysis of the ladle tipping process, it is found that the splashing phenomenon is most serious when the molten iron just flows from the ladle into the ladle. However, the ladle in different projects has different capacities and shapes, which makes it particularly important to determine the appropriate height of the baffle.

[0065] After analyzing the data, it was found that when the winch tipping method is used, the drop height of the iron tapping is usually smaller than the drop height of the iron ladle when it is stationary, while the opposite is true when the hydraulic tipping method is used. Therefore, the baffle height suitable for both tipping methods can be found based on the iron tapping drop height. This finding shows that using the iron tapping drop height as the basis for designing the baffle height can better adapt to the actual situation under different tipping methods, thereby improving the splash-proof effect and applicability of the baffle.

[0066] Determine the size and style: Through in-depth analysis of on-site production data, it is concluded that the most ideal way to solve the problem of molten iron splashing is to minimize the distance between the launder buffer pool and the ladle spout. However, the height of the launder buffer pool is generally limited to 1 meter, because the ladle spout is prone to collide with the launder buffer pool during the tipping process.

[0067] Taking into account the above factors affecting the size, the splash shield structure 3 adopts a three-sided open shield that can cover the molten iron tank mouth on the basis of the original height of the buffer tank. Under the premise of no collision, the blocking height of the molten iron splash is increased as much as possible.

[0068] In the actual production process, the design of the molten iron flow channel must comprehensively consider multiple factors such as the size of the cast iron machine and the direction of the tank mouth. The molten iron flow channel in a specific embodiment is used as an example for detailed description. Fig. 9 shown.

[0069] The data of the splash shield structure 3 is determined based on the above-mentioned molten iron flow channel data and the width of the molten iron tank mouth. In order to ensure the accuracy and practicality of the design, multiple three-dimensional simulation experiments were carried out. After repeated verification and adjustment, the size of the upper opening was determined. The splash shield structure 3 designed in this way can effectively prevent molten iron from splashing and ensure the smooth progress of production. Figure 2 shown.

[0070] As described above, the molten iron launder structure with a splash-proof baffle of the utility model has the following beneficial effects:

[0071] The utility model reduces the splashing of molten iron by means of physical barriers, thereby improving the recovery rate of molten iron and ensuring production safety. In addition, the splash-proof baffle structure can guide and constrain the direction of iron flow, effectively control the partial overflow of molten iron caused by operating errors, reduce the pollution and damage to the environment caused by splashing, and also simplify the cleaning work of the production site. The utility model not only reduces production costs and manpower input, but also optimizes the management and maintenance work of the production site and reduces the difficulty of operation. In addition, it has a simple structure, good molten iron collection effect, and high cost performance.

[0072] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A molten iron flow channel structure with a splash guard, comprising a molten iron flow channel body, a buffer pool is arranged at one end of the molten iron flow channel body, a top end of the first side of the buffer pool is arranged with an iron outlet, and the second side of the buffer pool is the tilting side of the molten iron tank, characterized in that: A splash baffle structure for physically blocking splashing of molten iron is arranged above the buffer pool, the splash baffle structure comprises a positive baffle located on a first side of the buffer pool and extending upward, both sides of the positive baffle are connected to side baffles extending to a second side of the buffer pool, the bottom ends of the positive baffle and each of the side baffles are sealingly abutted against the top end of the side wall of the buffer pool; a refractory lining structure is arranged on the inner wall of the positive baffle and each of the side baffles.

2. The molten iron launder structure with a splash guard as claimed in claim 1, characterized in that: The two side baffles are arranged to be inclined outward from bottom to top.

3. The molten iron launder structure with a splash guard as claimed in claim 2, characterized in that: The outer walls of the front baffle and each of the side baffles are provided with a rib plate structure for improving the structural strength of the splash baffle.

4. The molten iron launder structure with a splash guard as claimed in claim 2, characterized in that: The inner walls of the front baffle and each of the side baffles are paved with steel mesh, and refractory units are fixed on the steel mesh to form the refractory lining structure.

5. The molten iron launder structure with a splash guard as claimed in claim 2, characterized in that: A first reinforcing plate and a second reinforcing plate are respectively arranged between the bottom ends of the two side baffles and on the first side and the second side of the buffer pool. The width dimensions of the first reinforcing plate and the second reinforcing plate are both greater than the thickness dimension of the front baffle, and the bottom end of the refractory lining structure is supported by the first reinforcing plate and the second reinforcing plate.

6. The molten iron launder structure with a splash guard as claimed in claim 5, characterized in that: The second reinforcing plate is provided with a first connecting plate connecting the two side baffles and matching the shape of the mouth of the molten iron tank; Second connecting plates are respectively arranged at the top angles of the front baffle and each of the side baffles.

7. The molten iron launder structure with a splash guard as claimed in claim 1, characterized in that: A slot extending upward is arranged at a position of the bottom end of the positive baffle plate opposite to the iron flow outlet.

8. The molten iron launder structure with a splash guard as claimed in claim 1, characterized in that: The front baffle is provided with a lifting lug.

9. The molten iron launder structure with a splash guard as claimed in claim 1, characterized in that: The bottom end of the splash shield structure is connected to the buffer tank via a pin shaft.

10. The molten iron launder structure with a splash guard as claimed in claim 1, characterized in that: A ramming material filling unit is arranged at the gap between the splash guard plate structure and the buffer tank.

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