Long-service-life steel ladle upper nozzle puller pull rod device

Abstract

The utility model belongs to the technical field of metallurgical spare parts of molten steel tank equipment, and particularly relates to a long-service-life steel ladle upper nozzle puller pull rod device which comprises a connecting pull rod body, a nozzle blocking head is fixedly connected to the connecting pull rod body, and a conical connecting pull rod is fixedly connected to the right end of the connecting pull rod body. The connecting pull rod main body, the water gap blocking head, the conical connecting pull rod, the matching pull rod, the pull rod stress check ring and the inner pull rod are manufactured by an integral turning process, so that the problem of open welding possibly existing in a traditional split assembly welding piece is effectively avoided, and the stability and the reliability of the whole pull rod device are ensured; according to the technical process, the strength and hardness of the pull rod device are effectively improved, so that the pull rod device can keep stable performance in a severe working environment, the pull breaking frequency of the pull rod is reduced, the overtime phenomenon of steel ladle servicing is reduced, the production organization efficiency is improved, and meanwhile, the labor intensity of workers is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel ladle equipment metallurgy spare part technical field, concretely is a long life steel ladle upper nozzle puller pull rod device. BACKGROUND

[0002] In the steel ladle refining work area of the steel smelting plant, the replacement of the upper nozzle of the steel ladle is a key process, and a hydraulic pulling type replacement method is adopted. Specifically, the process involves a carefully designed pull rod device, and the working process and requirements of the device are very strict. First, the pull rod needs to be sent into the nozzle interior through a long pipe from the steel ladle opening. During this process, one end of the pull rod will extend outside the nozzle at the bottom and engage with the cylinder head of the pull plate device. Subsequently, through the extension and retraction action of the hydraulic oil cylinder, the nozzle on the steel ladle is smoothly pulled out. However, this seemingly simple process actually hides great challenges. The pull rod needs to operate in an extreme working environment: the temperature inside the nozzle is as high as 1000℃, and the pull rod also needs to withstand a working pressure of up to 200Kg. Such high temperature and high tension environment puts high requirements on the material and structure of the pull rod;

[0003] Although designers have tried to optimize the structure and material selection of the pull rod, in actual operation, the pull rod still often appears damaged. Specifically, the stop head of the pull rod often appears to be open and broken between the pull rod body. Such damage not only causes the pull rod to malfunction, but also causes the preparation time for replacing the upper nozzle of the steel ladle to exceed the time limit. Once the preparation time exceeds the time limit, it will have a chain reaction on the subsequent processes such as the converter seat ladle and the tapping process. The refining process time becomes very tight, which seriously affects the production rhythm after the furnace. This not only reduces production efficiency, but also increases production cost and safety risk, so we propose a long-life steel ladle upper nozzle puller pull rod device to solve the above problems. SUMMARY

[0004] (I) Technical problem solved

[0005] In view of the shortcomings of the prior art, the utility model provides a long-life steel ladle upper nozzle puller pull rod device, which solves the problems raised in the above background art.

[0006] (II) Technical scheme

[0007] The utility model discloses a long-life steel ladle upper nozzle puller pull rod device to realize the above purposes, which specifically adopts the following technical scheme:

[0008] The utility model provides a long -life ladle upper nozzle puller pull rod device, including connecting pull rod main part, the upper fixed connection has the nozzle stopper of connecting pull rod main part, the right -hand member of connecting pull rod main part is fixedly connected with the taper connecting pull rod, the right -hand member of taper connecting pull rod is fixedly connected with the cooperation pull rod, be equipped with pull rod stress stop ring on cooperation pull rod, the left -hand member of connecting pull rod main part is fixedly connected with the inner pull rod, and connecting pull rod main part, nozzle stopper, taper connecting pull rod, cooperation pull rod, pull rod stress stop ring and inner pull rod are integrally formed setting.

[0009] Further, the connecting pull rod main body, the nozzle stopper, the taper connecting pull rod, the cooperation pull rod, and the inner pull rod are provided with two transverse reinforcing ribs, and a plurality of vertical reinforcing ribs are fixedly connected to the transverse reinforcing ribs.

[0010] Further, the connecting pull rod main body, the nozzle stopper, the taper connecting pull rod, the cooperation pull rod, the pull rod stress stop ring and the inner pull rod are all provided with wear-resistant layers.

[0011] Further, the connecting pull rod main body, the nozzle stopper, the taper connecting pull rod, the cooperation pull rod, the pull rod stress stop ring and the inner pull rod are all made of 40Cr alloy structural steel.

[0012] Further, the transverse reinforcing ribs and the vertical reinforcing ribs are all made of aluminum alloy materials.

[0013] (Three) beneficial effects

[0014] Compared with the prior art, the long-life ladle upper nozzle puller pull rod device has the following beneficial effects:

[0015] The connecting pull rod main body, the nozzle stopper, the taper connecting pull rod, the cooperation pull rod, the pull rod stress stop ring and the inner pull rod are integrally manufactured through turning process, which effectively avoids the welding opening problem that may exist in traditional split assembly welding parts, ensures the stability and reliability of the entire pull rod device, and improves the strength and hardness of the pull rod device through quenching treatment after the entire turning process, so that the pull rod device can maintain stable performance in a harsh working environment, reduces the pull rod breakage frequency, reduces the ladle preparation overtime phenomenon, improves the production organization efficiency, and reduces the labor intensity of workers. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0017] Figure 2 It is another side three-dimensional structure schematic view of the utility model;

[0018] Figure 3 It is a sectional structure schematic view of the utility model;

[0019] Figure 4 This is a partial cross-sectional view of the present invention.

[0020] In the diagram: 1. Connecting rod body; 2. Sprue stop; 3. Tapered connecting rod; 4. Matching rod; 5. Rod force-bearing retaining ring; 6. Inner rod; 7. Horizontal reinforcing rib; 8. Vertical reinforcing rib; 9. Wear-resistant layer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example

[0023] like Figures 1-4 As shown in the figure, an embodiment of this utility model discloses a long-life steel ladle top nozzle puller rod device, including a connecting rod body 1, a nozzle stop 2 fixedly connected to the connecting rod body 1, a tapered connecting rod 3 fixedly connected to the right end of the connecting rod body 1, a matching rod 4 fixedly connected to the right end of the tapered connecting rod 3, a rod force-bearing retaining ring 5 provided on the matching rod 4, and an inner rod 6 fixedly connected to the left end of the connecting rod body 1. The connecting rod body 1, nozzle stop 2, tapered connecting rod 3, matching rod 4, rod force-bearing retaining ring 5, and inner rod 6 are integrally formed. The main body 1, the sprue stop 2, the tapered connecting rod 3, the mating rod 4, the rod force-bearing retaining ring 5, and the inner rod 6 are manufactured by integral turning process, which effectively avoids the welding problems that may exist in traditional separate welded parts, and ensures the stability and reliability of the entire rod device. After integral turning, the entire rod device is subjected to quenching treatment. This process effectively improves the strength and hardness of the rod device, enabling it to maintain stable performance in harsh working environments, reducing the frequency of rod breakage, reducing ladle preparation time delays, improving production organization efficiency, and reducing the labor intensity of workers.

[0024] In some embodiments, the connecting rod body 1, the sprue stop 2, the tapered connecting rod 3, the mating rod 4, and the inner rod 6 are provided with two transverse reinforcing ribs 7, and multiple vertical reinforcing ribs 8 are fixedly connected to the transverse reinforcing ribs 7. The transverse reinforcing ribs 7 can significantly enhance the bending resistance of the rod device in the horizontal direction and prevent it from bending and deforming when subjected to external forces. The setting of the vertical reinforcing ribs 8 improves the shear stability of the rod device in the vertical direction and prevents it from being damaged under shear force.

[0025] In some embodiments, a wear-resistant layer 9 is provided on the connecting rod body 1, the sprue stop 2, the tapered connecting rod 3, the mating rod 4, the rod force-bearing retaining ring 5, and the inner rod 6. The main function of the wear-resistant layer 9 is to enhance the wear resistance of the components. In the steel production process, the connecting rod device needs to frequently come into contact with high-temperature and high-wear media such as sprues and molten steel, which can easily lead to component wear. The presence of the wear-resistant layer 9 can effectively reduce this wear and extend the service life of the connecting rod device.

[0026] In some embodiments, the connecting rod body 1, the sprue stop 2, the tapered connecting rod 3, the mating rod 4, the rod force-bearing retaining ring 5, and the inner rod 6 are all made of 40Cr alloy structural steel. 40Cr alloy structural steel has high strength and hardness, which allows the connecting rod assembly made from it to withstand greater tensile and compressive forces without easily deforming or breaking. At the same time, its good wear resistance extends the service life of the assembly and reduces the frequency of replacement due to wear.

[0027] In some embodiments, both the transverse stiffener 7 and the vertical stiffener 8 are made of aluminum alloy. Aluminum alloy has a low density but high strength, which allows the stiffeners made of aluminum alloy to reduce the weight of the entire tie rod assembly while maintaining structural strength.

[0028] In terms of working principle or structural principle, the connecting rod body 1, sprue stop 2, tapered connecting rod 3, mating rod 4, rod force-bearing retaining ring 5, and inner rod 6 are manufactured by integral turning process. This effectively avoids the welding problems that may exist in traditional split-assembly welded parts, ensuring the stability and reliability of the entire connecting rod device. The setting of transverse reinforcing ribs 7 and vertical reinforcing ribs 8 further improves the strength and rigidity of the connecting rod device, enabling it to withstand greater tensile and compressive forces. The setting of wear-resistant layer 9 improves the wear resistance and service life of the connecting rod device. After integral turning, the entire connecting rod device is subjected to quenching treatment. This process effectively improves the strength and hardness of the connecting rod device, enabling it to maintain stable performance in harsh working environments, reducing the frequency of connecting rod breakage, reducing ladle preparation time delays, improving production organization efficiency, and reducing the labor intensity of workers.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A long-life steel ladle top nozzle puller rod device, comprising a connecting rod body (1), characterized in that: A sprue stop (2) is fixedly connected to the main body (1) of the connecting rod. A tapered connecting rod (3) is fixedly connected to the right end of the main body (1). A matching rod (4) is fixedly connected to the right end of the tapered connecting rod (3). A rod force retaining ring (5) is provided on the matching rod (4). An inner rod (6) is fixedly connected to the left end of the main body (1). The main body (1), sprue stop (2), tapered connecting rod (3), matching rod (4), rod force retaining ring (5), and inner rod (6) are integrally formed.

2. The long-life steel ladle inlet puller rod device according to claim 1, characterized in that: The connecting rod body (1), the water inlet stop (2), the tapered connecting rod (3), the cooperating rod (4), and the inner rod (6) are provided with two transverse reinforcing ribs (7), and multiple vertical reinforcing ribs (8) are fixedly connected to the transverse reinforcing ribs (7).

3. The long-life steel ladle inlet puller rod device according to claim 2, characterized in that: Wear-resistant layers (9) are provided on the main body (1) of the connecting rod, the water inlet stop (2), the tapered connecting rod (3), the mating rod (4), the rod force retaining ring (5) and the inner rod (6).

4. The long-life steel ladle inlet puller rod device according to claim 3, characterized in that: The connecting rod body (1), the sprue stop (2), the tapered connecting rod (3), the mating rod (4), the rod force retaining ring (5), and the inner rod (6) are all made of 40Cr alloy structural steel.

5. The long-life steel ladle inlet puller rod device according to claim 4, characterized in that: Both the transverse reinforcing ribs (7) and the vertical reinforcing ribs (8) are made of aluminum alloy.

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