Rapid cleaning tool for large ladle long nozzle of continuous casting machine

Abstract

The utility model relates to the technical field of large ladle long nozzle cleaning, and discloses a continuous casting machine large ladle long nozzle rapid cleaning tool which comprises an operation handle and a large ladle long nozzle, one end of the operation handle is fixedly provided with an oxygen guide pipe I. During operation, an oxygen valve on a point valve box is opened in advance, then the operation handle is held, and the large ladle long nozzle is cleaned. The cleaning device is moved to the position above the large ladle long nozzle to be cleaned, then the ball valve on the cleaning device is opened to adjust the oxygen flow, residual steel residues on the bowl portion of the large ladle long nozzle are cleaned, the angle and the position can be adjusted by rotating the operation handle while cleaning is conducted, and the cleaning device is placed on the storage frame after cleaning is conducted. According to the cleaning device, the working principle of a'shower 'during showering is simulated, a single oxygen burning pipe is converted to be subjected to'bundling' operation, operation is easy and convenient, cleaning is thorough and rapid, the labor intensity of an operator is relieved, and meanwhile tempering safety accidents can be effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to ladle long nozzle cleaning technical field, concretely is a continuous casting machine ladle long nozzle quick cleaning tool. BACKGROUND

[0002] When casting continuous casting billets, the ladle (also known as a large ladle) and the continuous casting tundish need to be connected through a ladle long nozzle. The function of the ladle long nozzle is to guide the molten steel in the ladle into the impact area of the continuous casting tundish through the sliding mechanism at the bottom of the ladle and the ladle nozzle, while preventing secondary oxidation of the molten steel. Therefore, the cooperation between the inner wall of the bowl part of the ladle long nozzle and the outer surface of the ladle nozzle is particularly important. To ensure continuous casting, the bowl part of the ladle long nozzle needs to be cleaned of residual steel and slag every time the ladle is replaced to ensure the sealing effect. In addition, if the residual steel and slag are not cleaned properly, the next batch of molten steel may return to the ladle long nozzle when pouring, which can directly lead to production interruption in severe cases. Currently, the oxygen lance is bent to an angle of 80°-90°, then one end is locked to the sleeve of the external oxygen pipe, and the oxygen valve is opened to clean the residual steel and slag in the bowl part of the ladle long nozzle with the oxygen gas blown by the head of the oxygen lance to ensure the sealing effect between the inner wall of the bowl part of the ladle long nozzle and the outer surface of the ladle nozzle.

[0003] A ladle long nozzle oxygen burning cleaning special tool with publication number CN213614120U belongs to the field of long nozzle cleaning tools. The utility model solves the problem of poor residual steel cleaning effect of the current tool on the inner wall of the long nozzle, improper operation that easily damages the inner wall of the long nozzle, and affects the service life of the long nozzle. The utility model comprises a long nozzle, a Laval nozzle, a connecting piece, a connecting pipe, an oxygen delivery pipe, and an oxygen source. One end of the oxygen delivery pipe is connected to the oxygen source, the other end of the oxygen delivery pipe is in communication with the connecting pipe, the other end of the connecting pipe is installed on the connecting piece and in communication with the connecting piece, the other end of the connecting piece is in communication with the input end of the Laval nozzle, and the output end of the Laval nozzle is in communication with the long nozzle. The utility model improves the flow speed of oxygen by installing a Laval nozzle at the inlet end of the long nozzle, which effectively cleans the residual steel on the inner wall of the long nozzle.

[0004] The aforementioned patent increases the oxygen flow rate, achieving efficient cleaning of residual steel on the inner wall of the long nozzle. However, the small diameter of the oxygen-burning pipe head means that when the injected oxygen sweeps away the residual steel and slag, it is equivalent to linear cleaning, requiring repeated movement of the oxygen-burning pipe to clean the entire arc surface. This results in a long cleaning time and incomplete cleaning. The long cleaning time can lead to a low liquid level in the tundish, causing excessive inclusions. Incomplete cleaning can cause steel to return to the long nozzle throat in the ladle, which can directly interrupt continuous casting production in severe cases. During cleaning, operators are prone to the oxygen-burning pipe end touching the residual steel and slag, causing "backfire." Severe "backfire" can burn the operator's hands and arms, leading to a safety accident. The oxygen-burning pipe operation method generally requires two people: one to operate the oxygen-burning pipe and the other to adjust the oxygen valve. The coordination between the two greatly affects the cleaning time and effect, and also increases labor costs.

[0005] Therefore, we propose a rapid cleaning tool for the long nozzle of the ladle in continuous casting machines to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this invention is to provide a rapid cleaning tool for the long nozzle of a continuous casting machine ladle, addressing the problems mentioned in the background art. The small diameter of the oxygen-burning pipe head means that when the oxygen is blown to remove residual steel and slag, it's essentially a linear cleaning process requiring repeated movement of the oxygen-burning pipe to clean the entire arc surface, resulting in long cleaning times and incomplete cleaning. Prolonged cleaning time leads to low tundish liquid levels, causing excessive inclusions; incomplete cleaning can cause steel to return to the long nozzle throat, potentially interrupting continuous casting production. During cleaning, operators are prone to the oxygen-burning pipe tip touching residual steel and slag, causing "backfire," which can severely burn the operator's hands and arms, leading to safety accidents. The oxygen-burning pipe operation typically requires two people: one to operate the pipe and the other to adjust the oxygen valve. The coordination between the two greatly affects the cleaning time and effectiveness, while also increasing labor costs.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a quick cleaning tool for the long nozzle of a continuous casting machine ladle, comprising an operating handle and a long nozzle of the ladle, wherein an oxygen conduit is fixedly installed at one end of the operating handle, an oxygen conduit is rotatably installed at one end of the oxygen conduit, a cleaning component is installed at one end of the oxygen conduit, an oxygen hose is fixedly installed on the side wall of one end of the oxygen conduit, and a valve box is fixedly installed at one end of the oxygen hose.

[0008] Preferably, the cleaning assembly includes an outer circular steel cover fixedly installed at one end of the oxygen conduit, and the side wall of the outer circular steel cover is fixedly fitted with iron mesh.

[0009] Preferably, the side wall of the iron screen is fixedly provided with an inner circular steel cover, which is arranged inside the outer circular steel cover.

[0010] Preferably, the outer circular steel cover and the inner circular steel cover jointly form a gas chamber, and the two oxygen pipes are in communication with the inside of the gas chamber.

[0011] Preferably, the oxygen pipe one is fixedly provided with a ball valve.

[0012] Preferably, the side wall of the oxygen pipe one is fixedly provided with a hanging iron chain, and one end of the hanging iron chain is fixedly provided with a hanging round stick.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. When operating, the oxygen valve on the point valve box is opened in advance, then the operating handle is held, the cleaning device is moved above the long water gap of the large package to be cleaned, the ball valve on the cleaning device is opened to adjust the oxygen flow, the residual steel and slag in the bowl part of the long water gap are cleaned, the operating handle is rotated to adjust the angle and position during cleaning, and the cleaning device is placed on the storage rack after cleaning. When the head of the cleaning device is stuck with steel, the standby cleaning nozzle can be quickly replaced. The utility model simulates the working principle of the "shower" in the shower, converts a single oxygen pipe into a "cluster" operation, is simple and convenient to operate, can clean quickly and completely, reduces the labor intensity of the operator, and can effectively prevent the occurrence of tempering safety accidents.

[0015] 2. The residual steel and slag in the inner wall of the bowl part of the long water gap of the large package can be quickly and completely cleaned, and the problem of excessive inclusions caused by the low liquid level of the tundish due to long cleaning time is prevented.

[0016] 3. The return of steel in the long water gap of the large package caused by incomplete cleaning is prevented, and the continuous casting production interruption accident is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole three-dimensional structure schematic view of the utility model;

[0018] Figure 2 It is a whole cross-sectional three-dimensional structure schematic view of the utility model.

[0019] In the drawing: 1, operating handle; 2, oxygen pipe one; 3, oxygen pipe two; 4, ball valve; 5, oxygen pipe; 6, point valve box; 7, hanging iron chain; 8, hanging round stick; 9, cleaning assembly; 91, outer circular steel cover; 92, gas chamber; 93, inner circular steel cover; 94, iron screen; 10, long water gap of large package. DETAILED DESCRIPTION

[0020] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0021] Embodiment one: please refer to Figure 1 Figure 2 A continuous casting machine ladle long nozzle rapid cleaning tool, including operating handle 1 and ladle long nozzle 10, one end of operating handle 1 is fixedly installed with oxygen guide pipe one 2, one end of oxygen guide pipe one 2 is rotatably installed with oxygen guide pipe two 3, one end of oxygen guide pipe two 3 is installed with cleaning assembly 9, one end of oxygen guide pipe one 2 is fixedly installed with oxygen hose 5 on the side wall, one end of oxygen hose 5 is fixedly installed with point valve box 6, and point valve box 6 is used for input of oxygen.

[0022] Cleaning assembly 9 includes outer round steel cover 91 fixedly installed at one end of oxygen guide pipe two 3, and iron screen 94 is fixedly installed on the side wall of outer round steel cover 91, and iron screen 94 is used for guiding gas flow outward.

[0023] The side wall of iron screen 94 is fixedly installed with inner round steel cover 93, and inner round steel cover 93 is arranged inside outer round steel cover 91.

[0024] Outer round steel cover 91 and inner round steel cover 93 jointly form gas chamber 92, oxygen guide pipe two 3 is in communication with the inside of gas chamber 92, and gas chamber 92 is between outer round steel cover 91 and inner round steel cover 93, and oxygen is outwardly transported through circular iron screen 94 formed between outer round steel cover 91 and inner round steel cover 93.

[0025] Ball valve 4 is fixedly installed on oxygen guide pipe one 2, and ball valve 4 is used for controlling the flow of oxygen.

[0026] The side wall of oxygen guide pipe one 2 is fixedly installed with hanging iron chain 7, one end of hanging iron chain 7 is fixedly installed with hanging round bar 8, and the device as a whole can be hung at a high place through hanging iron chain 7 and hanging round bar 8.

[0027] ​In the embodiment: when operating, the oxygen valve on the point valve box 6 is opened in advance, then the operating handle 1 is held, the cleaning device is moved above the large-bag long nozzle 10 to be cleaned, the ball valve 4 on the cleaning device is opened to adjust the oxygen flow size, the residual steel and slag on the bowl part of the large-bag long nozzle 10 are cleaned, the cleaning can be adjusted in angle and position by rotating the operating handle 1 during cleaning, and the cleaning device is placed on the storage rack after cleaning. When the head of the cleaning device is stuck with steel, the standby cleaning nozzle can be quickly replaced. The present application simulates the working principle of the "shower" in the shower, converts a single oxygen burning pipe into a "cluster" operation, is easy to operate, and can clean quickly and completely, reduce the labor intensity of the operator, effectively prevent the occurrence of red heat safety accidents, ensure that the residual steel and slag in the bowl part of the large-bag long nozzle 10 are cleaned quickly and completely, prevent the intermediate bag liquid level from being too low due to long cleaning time, and cause the quality problem of exceeding the standard of inclusions, prevent the large-bag long nozzle 10 from returning steel due to incomplete cleaning, and cause the continuous casting production to be interrupted.

[0028] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0029] 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 recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A quick cleaning tool for a ladle shroud of a continuous casting machine, comprising an operating handle (1) and a ladle shroud (10), characterized in that: One end of the operating handle (1) is fixedly installed with an oxygen guide pipe one (2), one end of the oxygen guide pipe one (2) is rotatably installed with an oxygen guide pipe two (3), one end of the oxygen guide pipe two (3) is installed with a cleaning assembly (9), one end of the oxygen guide pipe one (2) is fixedly installed with an oxygen rubber pipe (5) on the side wall, one end of the oxygen rubber pipe (5) is fixedly installed with a point valve box (6).

2. A quick cleaning tool for a continuous casting machine ladle shroud according to claim 1, characterized in that: The cleaning assembly (9) comprises an outer circular steel cover (91) fixedly installed at one end of the oxygen guide pipe two (3), and an iron screen (94) is fixedly installed on the side wall of the outer circular steel cover (91).

3. A quick cleaning tool for a continuous casting machine ladle shroud according to claim 2, characterized in that: An inner circular steel cover (93) is fixedly installed on the side wall of the iron screen (94), and the inner circular steel cover (93) is arranged inside the outer circular steel cover (91).

4. A quick cleaning tool for a continuous casting machine ladle shroud according to claim 3, characterized in that: A gas chamber (92) is jointly formed between the outer circular steel cover (91) and the inner circular steel cover (93), and the oxygen guide pipe two (3) is in communication with the inside of the gas chamber (92).

5. A quick cleaning tool for a continuous casting machine ladle shroud according to claim 4, characterized in that: A ball valve (4) is fixedly installed on the oxygen guide pipe one (2).

6. A quick cleaning tool for a continuous casting machine ladle shroud according to claim 5, characterized in that: A hanging iron chain (7) is fixedly installed on the side wall of the oxygen guide pipe one (2), and a hanging round stick (8) is fixedly installed at one end of the hanging iron chain (7).

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