Rapid cleaning device for steel ladle long nozzle

Abstract

The utility model discloses a quick cleaning device for a steel ladle long nozzle, which relates to the technical field of continuous casting equipment and comprises a cleaning guide pipe, a cleaning head and a cover plate, and one end of the cleaning guide pipe is used for being communicated with an oxygen source; the cleaning head is used for being detachably and fixedly connected and communicated with the end, away from the oxygen source, of the cleaning guide pipe, and the cleaning head is used for stretching into the bowl part of the long nozzle, spraying oxygen to the bowl part and conducting cyclone so as to purge residual steel in the long nozzle; the cover plate is fixedly connected with the end, close to the cleaning guide pipe, of the cleaning head and can seal the top end opening of the bowl portion of the long nozzle after the cleaning head extends into the bowl portion of the long nozzle, the structure is simple, use is convenient, the cleaning time of the long nozzle is effectively shortened, and the cleaning quality of the long nozzle is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to continuous casting equipment technical field, especially a kind of quick cleaning device for long nozzle of ladle. BACKGROUND

[0002] In the continuous casting equipment technical field, molten steel is poured into tundish from ladle during continuous production process, and molten steel secondary oxidation phenomenon is easily generated. To reduce molten steel secondary oxidation in this link and improve the quality of casting blank, long nozzle is usually used for sealing. However, a series of problems have appeared in actual use process. After replacing ladle each time, the part combined by long nozzle and the lower water outlet of ladle and the inner wall of long nozzle often stick with residual steel. If residual steel in the combined part of two water outlets is not cleaned, it will cause air leakage in combined sealing part, affect the effect of protective pouring; residual steel in the inner wall of long nozzle will cause the decrease of steel flow in long nozzle inner diameter, and in serious case, it will cause nozzle blockage, and then cause long nozzle upper part to spray steel, burn out slide plate mechanism, and even cause equipment damage and personal safety accident. At present, oxygen pipe is mainly used to clean residual steel, but there are many drawbacks. On the one hand, oxygen pipe is easy to burn out and often needs to be replaced; on the other hand, cleaning effect is not ideal, and residual steel often remains in long nozzle, which will cause nozzle to spray steel, molten steel secondary oxidation and other problems. At the same time, there is no safety device in operation process, and there is personal injury risk to operator. SUMMARY

[0003] The utility model aims at providing a kind of quick cleaning device for long nozzle of ladle to solve the problems existing in the prior art, simple structure, convenient to use, effectively shorten the cleaning time and cleaning quality of long nozzle.

[0004] To achieve the above object, the utility model provides the following scheme:

[0005] The utility model provides a kind of quick cleaning device for long nozzle of ladle, comprising: cleaning conduit, cleaning head and cover plate, one end of the cleaning conduit is used to communicate with oxygen source;The cleaning head is used to be detachably fixedly connected and communicated with the end of the cleaning conduit away from the oxygen source, and the cleaning head is used to extend into the bowl part of long nozzle and spray oxygen and gas vortex to the bowl part to blow off residual steel in the long nozzle;The cover plate is fixedly connected with the end of the cleaning head close to the cleaning conduit and can seal the top end opening of the bowl part of the long nozzle after the cleaning head extends into the bowl part of the long nozzle.

[0006] Preferably, it further includes quick adjusting on-off device, and the quick adjusting on-off device is arranged on the cleaning conduit.

[0007] Preferably, the cleaning head comprises a conical cylindrical body, an air chamber is arranged in the conical cylindrical body, the air chamber is communicated with the cleaning conduit, a plurality of air outlets are arranged on the side wall of the conical cylindrical body in a circumferential direction, and each air outlet is communicated with the air chamber.

[0008] Preferably, a plurality of communication pipes are further arranged, and one communication pipe is arranged for communication between one air outlet and the air chamber.

[0009] Preferably, the air outlets are arranged in multiple rows, and each row of air outlets is arranged uniformly along the circumferential direction of the conical cylindrical body.

[0010] Preferably, the conical cylindrical body is formed by pouring refractory material.

[0011] Preferably, a connecting pipe is further arranged, one end of the connecting pipe is fixedly connected with the cover plate and extends into the air chamber through the cover plate, and the other end of the connecting pipe is arranged for detachable sealing connection and communication with the cleaning conduit.

[0012] Preferably, an external thread is arranged on the end of the connecting pipe away from the cover plate, an internal thread is arranged on the end of the cleaning conduit away from the oxygen source, and the external thread is arranged for thread connection with the internal thread.

[0013] Preferably, the diameter of the cover plate is not less than the outer diameter of the bowl part of the long nozzle.

[0014] The utility model discloses the following technical effects are obtained relative to the prior art:

[0015] The utility model discloses a kind of quick cleaning devices for long nozzle of ladle, and cleaning conduit realizes the communication with oxygen source and guarantees oxygen supply;Cleaning head and cleaning conduit are detachably connected to facilitate equipment maintenance and replacement parts, can be extended into long nozzle bowl part and spray oxygen to form cyclone to blow residual steel, improve cleaning effect;Cover plate seals bowl part top end opening, avoid molten steel splashing during cleaning, protect operator safety. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiments will be simply introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0017] Figure 1 The structure diagram of the quick cleaning device for long nozzle of ladle provided by the utility model is shown;

[0018] In the figure: 1, cleaning conduit; 2, quick adjusting on-off device; 3, right-angle inner thread joint; 4, cleaning head; 5, cover plate; 6, oxygen gas source; 7, long nozzle. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0020] The utility model discloses a kind of quick cleaning devices for long nozzle of ladle, to solve the problems existing in the prior art described above, simple structure, convenient to use, effectively shorten the cleaning time and cleaning quality of long nozzle.

[0021] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0022] The utility model provides a kind of quick cleaning device for long nozzle 7 of ladle, including: cleaning conduit 1, cleaning head 4 and cover plate 5, one end of cleaning conduit 1 is used to communicate with oxygen gas source 6, cleaning head 4 is used to with the end of cleaning conduit 1 far from oxygen gas source 6 can be detachably fixed connection and communicate, and cleaning head 4 is used to extend into the bowl part of long nozzle 7 and spray oxygen and line gas cyclone to the residual steel in long nozzle 7 is swept, cover plate 5 is fixedly connected with the end of cleaning head 4 close to cleaning conduit 1 and can seal the top end opening of the bowl part of long nozzle 7 after cleaning head 4 extends into the bowl part of long nozzle 7, cleaning conduit 1 realizes the communication with oxygen source and guarantees oxygen supply;Cleaning head 4 and cleaning conduit 1 can be detachably connected to facilitate equipment maintenance and replacement parts, can extend into the bowl part of long nozzle 7 and spray oxygen to form gas cyclone and sweep residual steel, improve cleaning effect;Cover plate 5 seals the top end opening of bowl part, avoids molten steel spatter when cleaning, protects operator safety.

[0023] In a preferred embodiment, the quick cleaning device for long nozzle 7 of ladle further includes a quick adjusting on-off device 2, which is arranged on the cleaning conduit 1. The quick adjusting on-off device 2 is arranged on the cleaning conduit 1, so that the operator can conveniently and quickly control the inlet and closing of oxygen, accurately control the start and end of cleaning, improve the operation convenience, and flexibly adjust the amount of oxygen to better adapt to the cleaning needs of different long nozzles 7 and optimize the cleaning process.

[0024] In a preferred embodiment, the cleaning head 4 comprises a conical cylindrical body, the inside of which is provided with a gas chamber, the gas chamber is in communication with the cleaning conduit 1, the side wall of the conical cylindrical body is circumferentially provided with a plurality of gas outlets, each of which is in communication with the gas chamber, and the gas chamber of the conical cylindrical body can buffer and uniformly distribute the oxygen pressure from the cleaning conduit 1. The circumferential side wall is provided with a plurality of gas outlets in communication with the gas chamber, which can make the oxygen spray out of the gas outlets in multiple directions and angles, form a more complex and comprehensive cyclone, more effectively blow the residual steel at different positions of the bowl part and the inner wall of the long nozzle 7, and improve the cleaning efficiency and quality.

[0025] In a preferred embodiment, the rapid cleaning device for the long nozzle 7 of the ladle further comprises a plurality of communication pipes, one communication pipe is used to communicate one gas outlet with the gas chamber, and the plurality of communication pipes ensure that the oxygen transmission between each gas outlet and the gas chamber is stable and smooth, ensuring that the oxygen can be sprayed out of the gas outlet in time and uniformly. Preventing some gas outlets from being gasless or having uneven gas due to poor communication, thereby ensuring the consistency of the cleaning effect of the entire cleaning head 4 and improving the comprehensiveness of the residual steel blowing of the long nozzle 7.

[0026] In a preferred embodiment, the number of gas outlets is multiple rows, each row of gas outlets is uniformly arranged along the circumference of the conical cylindrical body, preferably two rows, one row close to the cover plate 5 is uniformly provided with 18, and the other row is also provided with 18. Multiple rows of gas outlets and circumferential uniform arrangement can increase the coverage range of oxygen injection. The arrangement of 18 gas outlets in each of the two rows increases the number of oxygen injection points, so that the residual steel is subjected to more comprehensive oxygen impact. On the other hand, the mixed cyclone formed by the gas outlets in different rows can better cover the areas at different heights and angles of the bowl part of the long nozzle 7, further improving the cleaning effect and ensuring that the residual steel at different positions in the long nozzle 7 can be effectively blown.

[0027] In a preferred embodiment, the conical cylindrical body is cast from refractory material, which can withstand the erosion of high-temperature molten steel and oxygen in the long nozzle 7, increase the service life of the cleaning head 4, ensure the stable operation of the cleaning device in harsh high-temperature environment for a long time, improve the durability and stability of the equipment, and reduce the production delay caused by frequent replacement of damaged parts.

[0028] In a preferred embodiment, the rapid cleaning device for the long nozzle 7 of the ladle further comprises a connecting pipe, one end of the connecting pipe is fixedly connected with the cover plate 5 and extends into the gas chamber through the cover plate 5, and the other end is used for detachable sealing connection and communication with the cleaning conduit 1. The connecting pipe realizes the stable connection and communication of the cover plate 5, the gas chamber and the cleaning conduit 1, ensuring that the oxygen can smoothly enter the gas chamber from the cleaning conduit 1 and then be sprayed out of the cleaning head 4. The detachable sealing connection facilitates the separation of the parts when needed, and facilitates the maintenance, repair and replacement of parts, improving the maintenance efficiency of the equipment.

[0029] In a preferred embodiment, the end of the connecting pipe away from the cover plate 5 is provided with an external thread, and the end of the cleaning conduit 1 away from the oxygen source 6 is provided with an internal thread, the external thread is used for threaded connection with the internal thread, and the cooperation of the external thread and the internal thread makes the connection of the connecting pipe and the cleaning conduit 1 more tight and stable. The threaded connection is convenient for manual or tool operation connection and disassembly, has high reliability, can ensure that the connection part will not be loose during high-pressure oxygen transmission, effectively prevents oxygen leakage, and ensures the normal work of the cleaning device.

[0030] In a preferred embodiment, the connecting pipe and the cleaning conduit 1 are connected through a right-angle internal thread joint 3, which ensures the accuracy of the connection angle and helps the installation and layout of the whole device to be reasonable. At the same time, the right-angle internal thread joint 3 can provide good sealing and mechanical strength, ensure no leakage during oxygen transportation, and maintain stable operation of the cleaning device. Moreover, this standard interface is convenient for connection with other suitable components or equipment, improving the universality and expansibility of the equipment.

[0031] In a preferred embodiment, the diameter of the cover plate 5 is not less than the outer diameter of the bowl part of the long nozzle 7, which ensures that the cover plate 5 can completely cover the top opening of the bowl part of the long nozzle 7, providing better sealing protection for cleaning the long nozzle 7. Effectively prevent molten steel and hot gas from splashing upward during cleaning, greatly improve the safety of the operator, and reduce the risk factors of the working environment.

[0032] The principle and implementation mode of the specific examples in the utility model are described, and the above embodiment is only used to help understand the method and core idea of the utility model; at the same time, for the general technical personnel in the field, according to the idea of the utility model, the specific implementation mode and application range will be changed. In conclusion, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A rapid cleaning device for a ladle shroud, characterized by: The utility model relates to a long nozzle cleaning device, which comprises: a cleaning conduit, one end of which is used for communicating with an oxygen source; a cleaning head, which is detachably fixedly connected with one end of the cleaning conduit away from the oxygen source and communicates with the cleaning conduit, and is used for extending into a bowl of a long nozzle and spraying oxygen and gas cyclone into the bowl to blow residual steel in the long nozzle; and a cover plate, which is fixedly connected with the cleaning head close to one end of the cleaning conduit and can seal a top opening of the bowl of the long nozzle after the cleaning head extends into the bowl of the long nozzle.

2. The rapid cleaning device for a ladle shroud according to claim 1, characterized in that: A quick adjusting on-off device is further arranged on the cleaning conduit.

3. The rapid cleaning device for a ladle shroud according to claim 2, characterized in that: The cleaning head comprises a conical cylindrical body, an air chamber is arranged in the conical cylindrical body, the air chamber communicates with the cleaning conduit, a plurality of gas outlets are circumferentially arranged on the side wall of the conical cylindrical body, and each gas outlet communicates with the air chamber.

4. The rapid cleaning device for a ladle shroud according to claim 3, characterized in that: A plurality of communication pipes are further arranged, one communication pipe is used for communicating one gas outlet with the air chamber.

5. The rapid cleaning device for a ladle shroud according to claim 4, characterized in that: The number of the gas outlets is multiple rows, and each row of the gas outlets is uniformly arranged along the circumference of the conical cylindrical body.

6. The rapid cleaning device for a ladle shroud according to claim 5, characterized in that: The conical cylindrical body is made of refractory material.

7. The rapid cleaning device for a ladle shroud according to claim 6, characterized in that: A connecting pipe is further arranged, one end of the connecting pipe is fixedly connected with the cover plate and extends into the air chamber through the cover plate, and the other end of the connecting pipe is used for detachably sealingly connecting with and communicating with the cleaning conduit.

8. The rapid cleaning device for a ladle shroud according to claim 7, characterized in that: An external thread is arranged on the end of the connecting pipe away from the cover plate, an internal thread is arranged on the end of the cleaning conduit away from the oxygen source, and the external thread is used for threadedly connecting with the internal thread.

9. The rapid cleaning device for a ladle shroud according to claim 8, characterized in that: The diameter of the cover plate is not less than the outer diameter of the bowl of the long nozzle.

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