A quadrilateral energy-saving durable beak

Abstract

The utility model relates to a quadrilateral energy -conserving durable small mouth, including the inside metal pipe and outer metal pipe of inside and outside sleeve joint, the both ends of outer metal pipe are detachably fixed with annular end plate, the inside metal pipe and outer metal pipe form the airtight annular cooling chamber between two annular end plates, the front and back sides of outer metal pipe are connected with water inlet pipe and water outlet pipe respectively, the front and back sides of inside metal pipe are fixed with a plurality of horizontal baffles extending along the width direction of inside metal pipe, the upper and lower sides of inside metal pipe are fixed with a plurality of longitudinal baffles extending along the length direction of inside metal pipe, the cooling water is passed into annular cooling chamber from water inlet pipe, and the cooling water flows through entire annular cooling chamber, and the inside metal pipe is cooled and flows out from water outlet pipe, the patent not only prolongs the service life of small mouth itself significantly, but also realizes the multiple positive effects of reducing comprehensive cast iron expense, improving operation efficiency and enhancing production safety through protecting mould and stabilizing production rhythm.

Description

Technical Field

[0001] This utility model relates to the field of cast iron technology, specifically to a quadrilateral energy-saving and durable small nozzle. Background Technology

[0002] In traditional cast iron production, the nozzle, a key component guiding molten iron into the mold, is typically made of a single steel plate. However, in the high-temperature environment of continuous operation, this traditional nozzle faces severe challenges. The high temperature of the molten iron during casting causes it to heat up rapidly, and due to its simple structure and lack of effective cooling measures, the nozzle body is prone to softening and deformation. Once deformed, the shape and size of its internal cavity change, resulting in uneven and unstable injection of molten iron into the cast iron mold. This uneven flow not only directly damages the expensive cast iron mold but also often requires production interruptions to replace the nozzle or repair the mold, severely impacting the continuity and efficiency of cast iron operations. The resulting unplanned downtime, mold repair costs, and increased overall costs due to disrupted production rhythms have become pain points restricting the improvement of production efficiency and economic benefits, while also posing additional safety hazards. Therefore, the industry urgently needs a new nozzle structure that can effectively resist high-temperature deformation, extend service life, and ensure smooth production processes. Utility Model Content

[0003] This utility model addresses the shortcomings of existing technologies by providing a quadrilateral, energy-saving, and durable small nozzle.

[0004] This utility model is achieved through the following technical solution: a quadrilateral energy-saving and durable nozzle is provided, including an inner metal tube and an outer metal tube with inner and outer sleeves. Both ends of the outer metal tube are detachably fixed with annular end plates. A closed annular cooling cavity is formed between the inner metal tube and the outer metal tube between the two annular end plates. The front and rear sides of the outer metal tube are respectively connected to an inlet pipe and an outlet pipe. Multiple transverse guide plates extending along the width direction of the inner metal tube are fixed to the front and rear sides of the inner metal tube. Multiple longitudinal guide plates extending along the length direction of the inner metal tube are fixed to the upper and lower sides of the inner metal tube.

[0005] In this design, molten iron enters from the large end of the inner metal tube and flows out from the small end. Cooling water is introduced into the annular cooling chamber through the inlet pipe. The cooling water flows through the entire annular cooling chamber through the transverse guide plate and the longitudinal guide plate, cooling the inner metal tube before flowing out through the outlet pipe.

[0006] As an optimization, both the inner and outer metal tubes are tapered tubes. This facilitates the insertion of the inner metal tube into the outer metal tube and serves to guide the flow of molten iron.

[0007] As an optimization, both the cross-section of the inner metal tube and the cross-section of the outer metal tube are quadrilaterals. This facilitates processing and assembly.

[0008] As an optimization, connecting lugs are fixed to both the front and rear sides of the outer metal tube, and the annular end plate is connected to the connecting lugs via connecting bolts. In this design, the annular end plate is pressed tightly against the end faces of the outer and inner metal tubes by the connecting bolts, thereby achieving effective sealing and fastening. Simultaneously, the connecting bolts can be removed for maintenance and component replacement. As an optimization, the inlet pipe and outlet pipe are respectively located at both ends of the outer metal pipe. This facilitates the flow of cooling water through the entire annular cooling chamber.

[0009] As an optimization, both the transverse and longitudinal guide plates are fitted to the inner wall of the outer metal tube. This achieves the supporting positioning of the inner metal tube within the outer metal tube.

[0010] As an optimization, the included angle between the two annular end plates is 5-15 degrees. This allows for proper use at a suitable angle after the nozzle is installed.

[0011] The beneficial effects of this utility model are as follows: This utility model's quadrilateral energy-saving and durable nozzle, through its innovative double-layer structure and built-in cooling system, brings significant technological progress and economic benefits. Its most core beneficial effect lies in greatly improving the nozzle's durability and stability under harsh high-temperature conditions. Through the annular cooling chamber formed by inner and outer metal tubes and the transverse and longitudinal guide plates installed on the inner tube wall, cooling water is efficiently and evenly distributed throughout the entire heated area, providing powerful circulating cooling to the inner metal tube that directly contacts the molten iron.

[0012] This active cooling mechanism fundamentally overcomes the defect of traditional single-layer nozzles softening due to overheating, allowing them to maintain their original geometry for extended periods and effectively preventing uneven molten iron flow caused by deformation. As a result, the risk of damage to the cast iron mold due to molten iron erosion is significantly reduced. This not only saves on the cost of frequent mold and nozzle replacements but also ensures the continuity and stability of the production process, reducing production time losses caused by equipment failures and unplanned downtime. Attached Figure Description

[0013] Figure 1 This is a front view of the present utility model; Figure 2 This utility model Figure 1 Sectional view of plane AA; Figure 3 This utility model Figure 1 Sectional view of the middle BB plane; Figure 4 This is a schematic diagram of the structure of this utility model; Figure 5This is a schematic diagram of the structure of this utility model from another angle; Figure 6 This is an exploded view of the present invention; Figure 7 This is a schematic diagram of the structure of the inner metal tube of this utility model; As shown in the figure: 1. Outer metal tube, 2. Inner metal tube, 3. Annular end plate, 4. Connecting ear plate, 5. Connecting bolt, 6. Inlet pipe, 7. Outlet pipe, 8. Horizontal guide plate, 9. Longitudinal guide plate. Detailed Implementation

[0014] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0015] like Figures 1-7 As shown, the present invention provides a quadrilateral energy-saving and durable nozzle, comprising an inner metal tube 2 and an outer metal tube 1 connected by an inner and outer sleeve. The cross-sections of the inner metal tube 2 and the outer metal tube 1 are both quadrilateral, and the lengths of the inner metal tube 2 and the outer metal tube 1 are equal.

[0016] Both the inner metal tube 2 and the outer metal tube 1 are tapered tubes, so the inner metal tube 2 can be inserted from the wide end of the outer metal tube 1 until both end faces of the inner metal tube 2 and the outer metal tube 1 are flush.

[0017] The distances from the outer metal tube 1 to the outer metal tube 2 at all points on the outer side are equal, thereby forming an annular cavity between the inner metal tube 2 and the outer metal tube 1. The two ends of the outer metal tube 1 are detachably fixed with annular end plates 3. The inner circle shape of the annular end plate 3 is the same as the inner circle shape of the end face of the inner metal tube 2, thereby sealing the annular cavity between the inner metal tube 2 and the outer metal tube 1, so that a sealed annular cooling cavity is formed between the two annular end plates 3.

[0018] In this embodiment, the two end faces of the outer metal tube 1 are not parallel, and there is an included angle of 5-15 degrees, so that the included angle of the two annular end plates 3 is 5-15 degrees.

[0019] The outer metal tube 1 has an inlet pipe 6 and an outlet pipe 7 connected to its front and rear sides, respectively. The inlet pipe 6 and the outlet pipe 7 are respectively located at both ends of the outer metal tube 1. Cooling water is introduced into the annular cooling chamber through the inlet pipe and flows out through the outlet pipe, thus flowing through the entire annular cooling chamber.

[0020] To ensure that cooling water can flow through the entire annular cooling chamber and prevent localized stagnation of water flow, such as... Figure 6 , 7As shown, multiple transverse guide plates 8 extending along the width direction of the inner metal pipe 2 are fixedly connected to the front and rear sides of the inner metal pipe 2, and multiple longitudinal guide plates 9 extending along the length direction of the inner metal pipe 2 are fixedly connected to the upper and lower sides of the inner metal pipe 2. Therefore, after the cooling water enters from one end of the outer metal pipe 1, it flows along the length and width directions. The transverse guide plates 8 guide the cooling water to the upper and lower sides of the inner metal pipe 2 to prevent the upper and lower sides from being without water flow. Then, the water flowing into the upper and lower sides flows along the length direction after being guided by the longitudinal guide plates 9. Finally, all the cooling water is discharged from the outlet pipe 7.

[0021] In order to ensure that the distance from the outer metal tube 1 to all parts of the outer side of the inner metal tube 2 is equal, in this embodiment, the transverse guide plate 8 and the longitudinal guide plate 9 are both attached to the inner wall of the outer metal tube 1, so that the positioning of the inner metal tube 2 is achieved after the inner metal tube 2 is inserted into the outer metal tube 1.

[0022] In order to fix the annular end plate 3, connecting ear plates 4 are fixed to both the front and rear sides of the outer metal tube 1. The annular end plate 3 is connected to the connecting ear plate 4 by connecting bolts 5. In this embodiment, each annular end plate 3 is fixed by four connecting bolts 5. The connecting bolts 5 pass through the annular end plate 3 and are threaded onto the connecting ear plate 4.

[0023] How to use this utility model: In use, molten iron enters from the large end of the inner metal tube 2 and flows out from the small end of the inner metal tube 2. Cooling water is introduced into the annular cooling chamber through the water inlet pipe 6. The cooling water flows through the entire annular cooling chamber through the transverse guide plate 8 and the longitudinal guide plate, thereby cooling the inner metal tube 2 and then flowing out from the water outlet pipe 7.

[0024] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A quadrilateral, energy-saving, and durable nozzle, characterized in that: It includes an inner metal tube (2) and an outer metal tube (1) with inner and outer sleeves. The two ends of the outer metal tube (1) are detachably fixed with annular end plates (3). A closed annular cooling cavity is formed between the inner metal tube (2) and the outer metal tube (1) between the two annular end plates (3). The front and rear sides of the outer metal tube (1) are respectively connected to an inlet pipe (6) and an outlet pipe (7). The front and rear sides of the inner metal tube (2) are fixed with a plurality of transverse guide plates (8) extending along the width direction of the inner metal tube (2). The upper and lower sides of the inner metal tube (2) are fixed with a plurality of longitudinal guide plates (9) extending along the length direction of the inner metal tube (2).

2. The quadrilateral energy-saving and durable small nozzle according to claim 1, characterized in that: Both the inner metal tube (2) and the outer metal tube (1) are tapered tubes.

3. The quadrilateral energy-saving and durable small nozzle according to claim 1, characterized in that: The cross-sections of the inner metal tube (2) and the outer metal tube (1) are both quadrilaterals.

4. The quadrilateral energy-saving and durable small nozzle according to claim 1, characterized in that: The outer metal tube (1) is fixed with connecting ear plates (4) on both the front and rear sides, and the annular end plate (3) is connected to the connecting ear plates (4) by connecting bolts (5).

5. The quadrilateral energy-saving and durable small nozzle according to claim 1, characterized in that: The inlet pipe (6) and outlet pipe (7) are respectively installed at both ends of the outer metal pipe (1).

6. The quadrilateral energy-saving and durable small nozzle according to claim 1, characterized in that: Both the transverse guide plate (8) and the longitudinal guide plate (9) are attached to the inner wall of the outer metal tube (1).

7. The quadrilateral energy-saving and durable small nozzle according to claim 1, characterized in that: The included angle between the two annular end plates (3) is 5-15 degrees.

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