Steel ladle bottom blowing connecting device

Abstract

The utility model discloses a steel ladle bottom blowing connecting device, and belongs to the technical field of metallurgical equipment. The steel ladle bottom blowing connecting device comprises a steel ladle connecting seat provided with a first air inlet channel, a first air inlet and a first air outlet, the first air inlet and the first air outlet are communicated with the first air inlet channel, and the steel ladle connecting seat is used for being connected with a steel ladle; the buggy ladle connecting seat is provided with a second air inlet channel, a second air inlet and a second air outlet, the second air inlet and the second air outlet are communicated with the second air inlet channel, and the buggy ladle connecting seat is used for being connected with a buggy ladle; the first sealing ring is arranged on the first side face, close to the ladle connecting base, of the buggy ladle connecting base or the second side face, close to the buggy ladle connecting base, of the ladle connecting base. The first air inlet and the second air outlet are formed in the second side face and the first side face respectively, and the projections, facing the side face where the first sealing ring is located, of the first air inlet and the second air outlet are located in the first sealing ring.

Description

Technical Field

[0001] This application belongs to the technical field of metallurgical equipment, and particularly relates to a ladle bottom blowing connection device. Background Art

[0002] During the process of pouring molten steel from a converter into a ladle, it is necessary to start the bottom blowing of the ladle to make the molten steel in the ladle surge. Its function is to allow alloy materials added to the ladle to fully contact and melt with the molten steel.

[0003] A ladle car is a vehicle used in a steel mill to transport ladles. The ladle can usually complete the bottom blowing operation on the ladle car.

[0004] In related technologies, the bottom blowing air inlet on the ladle is opened at the bottom of the ladle trunnion seat. A one-way flow structure formed by a spring, steel balls, etc. is arranged in the bottom blowing air inlet. The upper end of the base for seating the ladle on the ladle car is provided with an air injection nozzle. During the process of hoisting the ladle onto the ladle car, it is necessary to repeatedly adjust the position of the ladle to accurately align the air injection nozzle with the bottom blowing air inlet so that the air injection nozzle can be inserted into the bottom blowing air inlet and communicate with the inside of the ladle. The operation is difficult and the efficiency is low. Utility Model Content

[0005] This application aims to at least solve the technical problem of the large operation difficulty when installing a ladle onto a ladle car in related technologies to a certain extent. For this reason, this application provides a ladle bottom blowing connection device.

[0006] A ladle bottom blowing connection device provided by an embodiment of this application includes:

[0007] A ladle connection seat, which is provided with a first air inlet passage, a first air inlet and a first air outlet communicated with the first air inlet passage, and the ladle connection seat is used for connecting with the ladle;

[0008] A ladle car connection seat, which is provided with a second air inlet passage, a second air inlet and a second air outlet communicated with the second air inlet passage, and the ladle car connection seat is used for connecting with the ladle car;

[0009] A first sealing ring, which is arranged on a first side of the ladle car connection seat close to the ladle connection seat or a second side of the ladle connection seat close to the ladle car connection seat;

[0010] Wherein, the first air inlet and the second air outlet are respectively arranged on the second side and the first side, and the projections of the first air inlet and the second air outlet on the side where the first sealing ring is located are both within the first sealing ring.

[0011] In some embodiments, the ladle car connection seat includes a gas guide member, the second air inlet passage, the second air outlet, and the second air inlet are all formed in the gas guide member, and the first sealing ring is arranged on the gas guide member.

[0012] In some embodiments, the ladle car connection seat further includes a first pressing plate, the first pressing plate is detachably connected to the gas guide member, and a part of the first sealing ring is located between the gas guide member and the first pressing plate.

[0013] In some embodiments, a support boss is arranged on the side of the gas guide member where the first sealing ring is arranged, the highest point of the support boss is lower than the highest point of the first sealing ring, and the support boss and the projection of the ladle connection seat on the gas guide member have an overlapping area.

[0014] In some embodiments, the ladle car connection seat further includes a gas guide member support and an elastic member, the gas guide member support is used to connect with the ladle car, the gas guide member is arranged on the gas guide member support, and the elastic member is located between the gas guide member and the gas guide member support and can provide a force towards the ladle connection seat direction to the gas guide member.

[0015] In some embodiments, the ladle car connection seat further includes a second pressing plate, the second pressing plate has a fixed part and a stop part which are fixedly connected, the fixed part is detachably connected to the gas guide member support; the gas guide member has a limiting part, the limiting part is located between the stop part and the gas guide member support, and the limiting part can move between the stop part and the gas guide member support.

[0016] In some embodiments, the ladle bottom blowing connection device further includes a second sealing ring, the second sealing ring is installed on the stop part or the limiting part and is located between the stop part and the limiting part.

[0017] In some embodiments, the ladle car connection seat further includes a one-way valve arranged on the second air inlet.

[0018] In some embodiments, a plurality of first air inlets are formed on the ladle connection seat, and a plurality of second air outlets are formed on the ladle car connection seat.

[0019] In some embodiments, the ladle bottom blowing connection device further includes a third sealing ring, the third sealing ring is arranged on the side of the ladle connection seat where the first air outlet is formed and protrudes from the ladle connection seat, the first air outlet is located within the third sealing ring, and a connection through hole for connecting with the ladle is further arranged on the ladle connection seat.

[0020] The utility model has at least the following beneficial effects:

[0021] The ladle bottom blowing connection device of the present application includes a ladle connection seat, a ladle car connection seat and a first sealing ring. During use, the ladle connection seat is connected to the ladle, and the first air outlet of the ladle connection seat is communicated with the bottom blowing air inlet of the ladle. The ladle car connection seat is connected to the ladle car, and the second air inlet of the ladle car connection seat is communicated with the air injection nozzle on the ladle car. The first air inlet and the second air outlet are respectively arranged on the second side surface and the first side surface, and the first sealing ring is arranged on the first side surface of the ladle car connection seat or the second side surface of the ladle connection seat. The projections of the first air inlet and the second air inlet towards the side surface where the first sealing ring is located are both within the first sealing ring.

[0022] In this way, under the action of the first sealing ring, the ladle connection seat and the ladle car connection seat can be in airtight contact with each other. The gas discharged from the second air outlet flows into the cavity formed by the first side surface, the second side surface and the first sealing ring, and then flows to the first air inlet, and then enters the ladle.

[0023] After using the ladle bottom blowing connection device of the present application, when installing the ladle, it is only necessary to ensure that after the ladle is lowered, the first air inlet or the second air outlet can be located within the first sealing ring (if the first sealing ring is installed on the first side surface, ensure that the second air outlet can be located within the first sealing ring after the ladle is lowered; conversely, if the first sealing ring is installed on the second side surface, ensure that the first air outlet can be located within the first sealing ring), then the air injection port of the ladle car can be communicated with the bottom blowing air inlet of the ladle. There is no need for precise alignment between the first air inlet and the second air outlet. The first air inlet and the second air outlet are communicated through the cavity formed by the first sealing ring, the first side surface and the second side surface. When installing the ladle, the requirement for the position accuracy of the ladle is relatively low, which facilitates the installation of the ladle on the ladle car, reduces the difficulty of installing the ladle on the ladle car, helps to improve the efficiency of installing the ladle on the ladle car, and facilitates the bottom blowing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It shows a schematic structural diagram of the ladle bottom blowing connection device in one or more embodiments of the present application.

[0026] Figure 2 It shows a schematic structural diagram of the ladle bottom blowing connection device installed on the ladle car and the ladle in one or more embodiments of the present application.

[0027] Figure 3The structural schematic diagram of the ladle placed on the ladle car is shown.

[0028] Figure 4 The structural schematic diagram of the check valve and the gas injection nozzle of the bottom blowing connection device of the ladle in one or more embodiments of the present application is shown.

[0029] Reference numerals: 100 - bottom blowing connection device of ladle, 100a - cavity, 110 - ladle connection seat, 110a - first air inlet channel, 110b - first air inlet, 110c - first air outlet, 110d - connection through hole, 111 - second side, 120 - ladle car connection seat, 120a - second air inlet channel, 120b - second air inlet, 120c - second air outlet, 121 - air guiding member, 1211 - first side, 1212 - supporting boss, 1213 - limiting part, 122 - first pressing plate, 123 - air guiding member support, 124 - elastic member, 125 - second pressing plate, 1251 - fixing part, 1252 - stopping part, 130 - first sealing ring, 140 - second sealing ring, 150 - check valve, 151 - valve body, 151a - check valve flow channel, 151b - check valve inlet, 151c - check valve outlet, 152 - steel ball, 153 - spring, 160 - third sealing ring, 200 - ladle, 200a - bottom blowing air inlet, 300 - ladle car, 310 - gas injection nozzle, 310a - gas injection port. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0031] It should be noted that all the directional indications in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0032] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0033] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0034] In the related art, during the process of hoisting and installing a ladle onto a ladle car, it is necessary to repeatedly adjust the position of the ladle to accurately align the gas injection nozzle on the ladle car with the bottom blowing air inlet on the ladle so that the gas injection nozzle can be inserted into the bottom blowing air inlet to achieve bottom blowing operation. The operation is difficult and the efficiency is low.

[0035] The embodiment of the present application provides a ladle bottom blowing connection device, which can at least solve to a certain extent the technical problem of the difficult operation when installing the ladle onto the ladle car.

[0036] The present application will be described below with reference to the accompanying drawings and specific embodiments:

[0037] As Figure 1 and Figure 2 shown, the ladle bottom blowing connection device 100 includes a ladle connection seat 110, a ladle car connection seat 120, and a first sealing ring 130.

[0038] A first air inlet passage 110a, a first air inlet 110b, and a first air outlet 110c communicating with the first air inlet passage 110a are formed on the ladle connection seat 110, and the ladle connection seat 110 is used for connecting with the ladle 200;

[0039] A second air inlet passage 120a, a second air inlet 120b, and a second air outlet 120c communicating with the second air inlet passage 120a are formed on the ladle car connection seat 120, and the ladle car connection seat 120 is used for connecting with the ladle car 300;

[0040] The first sealing ring 130 is disposed on the first side surface 1211 of the ladle car connection seat 120 close to the ladle connection seat 110 and / or the second side surface 111 of the ladle connection seat 110 close to the ladle car connection seat 120;

[0041] Among them, the first air inlet 110b and the second air outlet 120c are respectively disposed on the second side surface 111 and the first side surface 1211, and the projections of the first air inlet 110b and the second air outlet 120c on the side surface where the first sealing ring 130 is located are both located within the first sealing ring 130.

[0042] It should be noted that when using the present application, the ladle connection seat 110 can be connected to the ladle 200 by means such as welding, clamping, bolt connection, etc. The ladle connection seat 110 can be installed at the bottom blowing air inlet 200a of the ladle 200, and the first air outlet 110c on the ladle connection seat 110 is communicated with the bottom blowing air inlet 200a of the ladle 200. Similarly, when using the present application, the ladle car connection seat 120 can be connected to the ladle car 300 by means such as welding, clamping, bolt connection, etc. The ladle car connection seat 120 can be installed at the air injection port 310a of the ladle car 300, and the second air inlet 120b on the ladle car connection seat 120 is communicated with the air injection port 310a of the ladle car 300.

[0043] The side of the ladle car connection seat 120 close to the ladle connection seat 110 is the first side 1211, and the side of the ladle connection seat 110 close to the ladle car connection seat 120 is the second side 111. The first sealing ring 130 can be installed on the first side 1211 or on the second side 111.

[0044] The first air inlet 110b and the second air outlet 120c are respectively arranged on the second side 111 and the first side 1211, and the projections of the first air inlet 110b and the second air outlet 120c on the side where the first sealing ring 130 is located are both within the first sealing ring 130. That is to say, if the first sealing ring 130 is arranged on the first side 1211 of the ladle car connection seat 120 close to the ladle connection seat 110, then the second air outlet 120c is located inside the first sealing ring 130, and the projection of the first air inlet 110b towards the ladle car connection seat 120 can be within the first sealing ring 130; if the first sealing ring 130 is arranged on the second side 111 of the ladle connection seat 110 close to the ladle car connection seat 120, then the first air inlet 110b is located inside the first sealing ring 130, and the projection of the second air outlet 120c towards the ladle connection seat 110 can be within the first sealing ring 130.

[0045] After such a design, if the first sealing ring 130 is arranged on the first side surface 1211, when an operator hoists the ladle 200 through a hoisting device, after hoisting the ladle 200 above the ladle car 300, the position of the ladle 200 is finely adjusted so that, along the vertical direction, the projection of the first air inlet 110b towards the second side surface 111 can be located within the first sealing ring 130, then the ladle 200 can be lowered so that the first air inlet 110b is located inside the first sealing ring 130 after lowering. If the first sealing ring 130 is arranged on the second side surface 111, the operator also hoists the ladle 200 through a hoisting device. After hoisting the ladle 200 above the ladle car 300, the position of the ladle 200 is finely adjusted so that, along the vertical direction, the projection of the second air outlet 120c towards the second side surface 111 can be located within the first sealing ring 130, then the ladle 200 can be lowered so that the second air outlet 120c is located within the first sealing ring 130.

[0046] As Figure 3 shown, after the ladle 200 is lowered onto the ladle car 300, due to the action of gravity on the ladle 200, the second side surface 111 will exert a force towards the first side surface 1211 on the first sealing ring 130, and the first sealing ring 130 will be compressed and deformed under the combined action of the first side surface 1211 and the second side surface 111 to seal the gap between the first side surface 1211 and the second side surface 111. In this way, a cavity 100a is formed by enclosing the first sealing ring 130, the first side surface 1211 and the second side surface 111. The first air inlet 110b of the ladle connecting seat 110 and the second air outlet 120c of the ladle car connecting seat 120 are connected through this cavity 100a. The gas discharged from the gas injection port 310a of the ladle car connecting seat 120 is sequentially transmitted through the second air inlet 120b, the second air passage 120a, the second air outlet 120c, the first air inlet 110b, the first air passage 110a, the first air outlet 110c and the bottom blowing air inlet 200a of the ladle 200, and finally enters the ladle 200 through the bottom blowing air inlet 200a of the ladle 200, so that the molten steel in the ladle 200 can surge, completing the bottom blowing operation of the ladle 200.

[0047] It can be seen from this that after using the ladle bottom blowing connection device 100 of the present application, when installing the ladle 200, it is only necessary to ensure that after the ladle 200 is lowered, the first air inlet 110b or the second air outlet 120c can be located within the first sealing ring 130 (if the first sealing ring 130 is installed on the first side 111, ensure that the second air outlet 120c can be located within the first sealing ring 130 after the ladle 200 is lowered; conversely, if the first sealing ring 130 is installed on the second side 1211, ensure that the first air outlet 110b can be located within the first sealing ring 130), then the air injection port 310a of the ladle car 300 can be connected to the bottom blowing air inlet 200a of the ladle 200. There is no need for precise alignment between the first air inlet 110b and the second air outlet 120c. The first air inlet 110b and the second air inlet 120b are connected through the cavity 100a formed by enclosing the first sealing ring 130, the first side 1211, and the second side 111. When installing the ladle 200, the requirement for the position accuracy of the ladle 200 is relatively low, which facilitates the installation of the ladle 200 onto the ladle car 300, reduces the difficulty of installing the ladle 200 onto the ladle car 300, helps improve the installation efficiency of the ladle 200 onto the ladle car 300, and facilitates the bottom blowing operation.

[0048] In some embodiments, the ladle car connection seat 120 includes a gas guiding member 121. The second air inlet channel 120a, the second air outlet 120c, and the second air inlet 120b are all opened on the gas guiding member 121, and the first sealing ring 130 is disposed on the gas guiding member 121.

[0049] In these embodiments, as Figure 1 shown, the upper side of the gas guiding member 121 is the first side 1211. The first sealing ring 130 is disposed on the upper side of the gas guiding member 121, and the second air outlet 120c is located inside the first sealing ring 130. Due to the pressure of the ladle 200 on the first sealing ring 130 and the influence of the high temperature in the steel mill, the service life of the first sealing ring 130 is usually short. When the first sealing ring 130 is damaged and cannot seal the gap between the first side 1211 and the second side 111, the first sealing ring 130 needs to be replaced.

[0050] In these embodiments, the first sealing ring 130 is disposed on the air guiding member 121. On the one hand, it is convenient for the operator to replace the first sealing ring 130 because the first side surface 1211 of the air guiding member 121 faces upward and there is no obstruction above it. Therefore, when replacing the first sealing ring 130, there is no need to perform operations such as flipping or hoisting the ladle car 300, which facilitates the operator to replace the first sealing ring 130. On the other hand, molten steel is usually stored in the ladle 200, and the temperature of the ladle 200 is usually relatively high. The ladle car 300 is mainly used to support and transfer the ladle 200 and is less affected by the temperature of the molten steel. Therefore, setting the first sealing ring 130 on the air guiding member 121 can, to a certain extent, reduce the influence of high temperature on the first sealing ring 130 and extend the service life of the first sealing ring 130.

[0051] The first sealing ring 130 can be installed on the air guiding member 121 by means of bonding, snap connection, etc., which is not limited herein.

[0052] In some embodiments, the ladle car connecting seat 120 further includes a first pressing plate 122. The first pressing plate 122 is detachably connected to the air guiding member 121, and a part of the first sealing ring 130 is located between the air guiding member 121 and the first pressing plate 122.

[0053] The first pressing plate 122 is used to limit the first sealing ring 130. A part of the first sealing ring 130 is located between the first pressing plate 122 and the air guiding member 121 and is limited by the first pressing plate 122 and the air guiding member 121. When the first sealing ring 130 needs to be replaced, after detaching the first pressing plate 122 from the air guiding member 121, the damaged first sealing ring 130 can be removed. When installing the first sealing ring 130, the first sealing ring 130 can be first placed on the first side surface 1211 of the air guiding member 121, and then the first pressing plate 122 is connected to the air guiding member 121. After such a design, the installation and disassembly of the first sealing ring 130 are more convenient.

[0054] The first pressing plate 122 and the air guiding member 121 can be detachably connected by means of bolt connection, snap connection, etc., which is not limited herein.

[0055] In some embodiments, a support boss 1212 is provided on the side surface of the air guiding member 121 where the first sealing ring 130 is disposed. The highest point of the support boss 1212 is lower than the highest point of the first sealing ring 130, and the projection of the support boss 1212 and the ladle car connecting seat 110 on the air guiding member 121 has an overlapping area.

[0056] That is to say, a support boss 1212 is provided on the first side surface 1211 of the air guiding member 121. The projection of the support boss 1212 and the ladle connection base 110 on the air guiding member 121 has an overlapping area. That is to say, along the vertical direction, the projection of the ladle connection base 110 on the air guiding member 121 at least partially coincides with the support boss 1212. After such a design, when the ladle 200 is lowered, the ladle connection base 110 can contact the support boss 1212, and the support boss 1212 can support the ladle connection base 110.

[0057] After the first sealing ring 130 is deformed under force beyond a certain range, the first sealing ring 130 is liable to be damaged. In these embodiments, through the arrangement of the support boss 1212, the ladle connection base 110 is supported, so that when the highest point of the first sealing ring 130 is compressed to be consistent with the highest point of the support boss 1212, the support boss 1212 can support the ladle connection base 110, and the first sealing member 130 will not be further compressed, preventing the first sealing ring 130 from being over-compressed, which helps to extend the service life of the first sealing ring 130 to a certain extent.

[0058] The specific distance between the highest point of the first sealing ring 130 and the highest point of the support boss 1212 is related to the maximum compression amount of the first sealing ring 130. For example, if the maximum compression amount of the first sealing ring 130 is 5 mm, then the distance between the highest point of the first sealing ring 130 and the highest point of the support boss 1212 can be set to 4 mm to ensure that the first sealing ring 130 stops being compressed before being compressed to 5 mm, and to avoid the compression amount of the first sealing ring 130 exceeding the maximum compression amount of 5 mm.

[0059] In some embodiments, the distance between the upper end surface of the first sealing ring 130 and the upper end surface of the support boss 1212 is 3 mm.

[0060] It should be noted that in the embodiments provided with the first pressing plate 122, the highest point of the support boss 1212 should also be higher than the highest point of the first pressing plate 122 to ensure that the support boss 1212 can smoothly perform the function of supporting the ladle connection base 110.

[0061] In some embodiments, the ladle car connection base 120 further includes an air guiding member support 123 and an elastic member 124. The air guiding member support 123 is used to connect with the ladle car 300. The air guiding member 121 is arranged on the air guiding member support 123. The elastic member 124 is located between the air guiding member 121 and the air guiding member support 123 and can provide a force acting on the air guiding member 121 in the direction towards the ladle connection base 110.

[0062] Through the arrangement of the elastic member 124, when the ladle connection seat 110 is lowered to contact the first sealing ring 130 with the second side surface 111, the first sealing ring 130 can move downward by a certain distance under the action of the deformation of the spring 153. When the spring 153 deforms, it can absorb part of the impact force, which helps to reduce the impact force of the ladle connection seat 110 on the first sealing ring 130 and extend the service life of the first sealing ring 130.

[0063] In some embodiments, the elastic member 124 is a spring. The spring is sleeved on the air guiding member 121. The upper side of the spring 153 contacts the air guiding member 121, and the lower side contacts the air guiding member support member 123.

[0064] In some embodiments, the ladle car connection seat 120 further includes a second pressing plate 125. The second pressing plate 125 has a fixed portion 1251 and a stop portion 1252 that are fixedly connected. The fixed portion 1251 is detachably connected to the air guiding member support member 123; the air guiding member 121 has a limiting portion 1213. The limiting portion 1213 is located between the stop portion 1252 and the air guiding member support member 123, and the limiting portion 1213 can move between the stop portion 1252 and the air guiding member support member 123.

[0065] Under the action of the second pressing plate 125, the air guiding member 121 is limited between the stop portion 1252 of the second pressing plate 125 and the air guiding member support member 123. When the limiting portion 1213 of the air guiding member 121 is pressed down by the ladle connection seat 110 to contact the air guiding member support member 123, the air guiding member 121 cannot be further pressed down; under the action of the elastic member 124, when the limiting portion 1213 of the air guiding member 121 is lifted to contact the stop portion 1252 of the second pressing plate 125, the air guiding member 121 cannot be further lifted. The air guiding member 121 can only move between the stop portion 1252 of the second pressing plate 125 and the air guiding member support member 123, restricting the movement area of the air guiding member 121, which can prevent the air guiding member 121 from detaching from the support member 123 and helps to ensure the continuous and stable operation of the ladle bottom blowing connection device 100.

[0066] The fixed portion 1251 of the second pressing plate 125 is detachably connected to the air guiding member support member 123, so that the second pressing plate 125 can be detached from the air guiding member support member 123, facilitating the disassembly and installation of the air guiding member 121. The fixed portion 1251 of the second pressing plate 125 and the air guiding member support member 123 can be detachably connected by means such as bolt connection and snap connection.

[0067] In some embodiments, the ladle bottom blowing connection device 100 further includes a second sealing ring 140. The second sealing ring 140 is installed on the stop portion 1252 or the limiting portion 1213 and is located between the stop portion 1252 and the limiting portion 1213.

[0068] After such design, when the ladle 200 is not installed on the ladle car 300, under the action of the elastic member 124, the limiting portion 1213 of the air guiding member 121 and the stopping portion 1252 clamp the second sealing ring 140, and the second sealing ring 140 seals the gap between the limiting portion 1213 and the stopping portion 1252, preventing external dust, water vapor, etc. from entering the ladle car connection seat 120, which helps to ensure that the ladle car connection seat 120 can operate continuously and stably.

[0069] In some embodiments, the ladle car connection seat 120 further includes a check valve 150 provided on the second air inlet 120b.

[0070] The structure of the check valve 150 is diverse and is not limited in this application. By providing the check valve 150, the gas flows unidirectionally along the direction from the second air inlet 120b to the second air outlet 120c, preventing gas backflow.

[0071] As Figure 4 shown, in some embodiments, the check valve 150 is a ball-type through check valve 150, including a valve body 151, a steel ball 152, and a spring 153. The valve body 151 has a check valve flow channel 151a, a check valve inlet 151b, and a check valve outlet 151c that communicate with the check valve flow channel 151a. The steel ball 152 and the spring 153 are both arranged in the check valve flow channel 151a. The steel ball 152 is located at one end of the spring 153 close to the check valve inlet 151b. Under the action of the valve body 151, the steel column and the spring 153 are limited in the check valve flow channel 151a. Under the action of the spring 153, the steel ball 152 blocks the check valve flow channel 151a.

[0072] In these embodiments, the side of the check valve 150 provided with the check valve outlet 151c is located in the second air inlet 120b of the air guiding member 121 and is hermetically connected to the air guiding member 121, so that the check valve outlet 151c communicates with the second air inlet 120b.

[0073] In these embodiments, an air injection nozzle 310 is provided on the ladle car 300, and an air injection port 310a is provided on the air injection nozzle 310. The air injection nozzle 310 is located in the check valve inlet 151b or directly below the check valve inlet 151b. When the ladle 200 is placed on the ladle car 300, the elastic member 124 is compressed, and the air guiding member 121 moves downward, so that the air injection nozzle 310 can extend into the check valve inlet 151b and push the steel ball 152 upward, and the spring 153 is compressed, so that the steel ball 152 does not block the check valve flow channel 151a; when the ladle 200 is removed from the ladle car 300, the elastic member 124 resumes deformation, driving the air guiding member 121 to move upward, so that the air injection nozzle 310 is separated from the steel ball 152, and the steel ball 152 will block the check valve flow channel 151a under the action of the spring 153.

[0074] In some embodiments, the ladle connection seat 110 is provided with a plurality of first air inlets 110b, and the ladle car connection seat 120 is provided with a plurality of second air outlets 120c.

[0075] The arrangement of the plurality of first air inlets 110b and the plurality of second air outlets 120c improves the redundancy of the bottom blowing connection device 100 of the ladle. After one or more of the first air inlets 110b are blocked, air can still enter through the unblocked first air inlets 110b. After one or more of the second air outlets 120c are blocked, air can still exit through the unblocked second air outlets 120c.

[0076] In some embodiments, the bottom blowing connection device 100 of the ladle further includes a third sealing ring 160. The third sealing ring 160 is arranged on the side of the ladle connection seat 110 where the first air outlet 110c is provided and protrudes from the ladle connection seat 110. The first air outlet 110c is located within the third sealing ring 160. A connection through hole 110d for connecting with the ladle 200 is provided on the ladle connection seat 110.

[0077] The third sealing ring 160 protrudes from the ladle connection seat 110 for sealing the gap between the ladle connection seat 110 and the ladle 200. In these embodiments, the ladle connection seat 110 and the ladle 200 can be fixedly connected by connecting members such as bolts. After the connecting member passes through the connection through hole 110d, it is connected to the connection hole on the ladle 200. During the connection process of the connecting member, the ladle connection seat 110 gradually approaches the ladle 200, and the third sealing ring 160 is gradually compressed to seal the gap between the ladle connection seat 110 and the ladle 200, so as to ensure that the first air outlet is hermetically connected to the bottom blowing air inlet 200a of the ladle 200.

[0078] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0079] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0080] Although embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A ladle bottom blowing connection device (100), characterized in that: include: A ladle connection seat (110) is provided with a first air inlet channel (110a) and a first air inlet port (110b) and a first air outlet port (110c) which are in communication with the first air inlet channel (110a), and the ladle connection seat (110) is used to be connected to the ladle (200); A ladle car connection seat (120) is provided with a second air inlet channel (120a) and a second air inlet port (120b) and a second air outlet port (120c) which are communicated with the second air inlet channel (120a), and the ladle car connection seat (120) is used to be connected to the ladle car (300); A first sealing ring (130) is arranged on a first side surface (1211) of the ladle car connection seat (120) close to the ladle connection seat (110) or a second side surface (111) of the ladle connection seat (110) close to the ladle car connection seat (120); The first air inlet (110b) and the second air outlet (120c) are respectively arranged on the second side surface (111) and the first side surface (1211), and the projections of the first air inlet (110b) and the second air outlet (120c) toward the side surface where the first sealing ring (130) is located are both located inside the first sealing ring (130).

2. The ladle bottom blowing connection device (100) according to claim 1, characterized in that: The ladle car connecting seat (120) comprises an air guide (121); the second air inlet channel (120a), the second air outlet (120c) and the second air inlet (120b) are all provided on the air guide (121); and the first sealing ring (130) is provided on the air guide (121).

3. The ladle bottom blowing connection device (100) according to claim 2, characterized in that: The ladle car connection seat (120) further comprises a first pressing plate (122), wherein the first pressing plate (122) is detachably connected to the air guide member (121), and the first sealing ring (130) is partially located between the air guide member (121) and the first pressing plate (122).

4. The ladle bottom blowing connection device (100) according to claim 2, characterized in that: The side surface of the air guide (121) on which the first sealing ring (130) is arranged is provided with a supporting boss (1212), the highest point of the supporting boss (1212) is lower than the highest point of the first sealing ring (130), and the projection of the supporting boss (1212) and the ladle connecting seat (110) on the air guide (121) has an overlapping area.

5. The ladle bottom blowing connection device (100) according to claim 2, characterized in that: The ladle car connection seat (120) further comprises an air guide support (123) and an elastic member (124); the air guide support (123) is used to connect with the ladle car (300); the air guide (121) is arranged on the air guide support (123); the elastic member (124) is located between the air guide (121) and the air guide support (123), and can provide a force acting on the air guide (121) in a direction toward the ladle connection seat (110).

6. The ladle bottom blowing connection device (100) according to claim 5, characterized in that: The ladle car connecting seat (120) further comprises a second pressing plate (125), wherein the second pressing plate (125) comprises a fixing portion (1251) and a stop portion (1252) which are fixedly connected, wherein the fixing portion (1251) is detachably connected to the air guide support (123); the air guide (121) comprises a limiting portion (1213), wherein the limiting portion (1213) is located between the stop portion (1252) and the air guide support (123), and wherein the limiting portion (1213) is movable between the stop portion (1252) and the air guide support (123).

7. The ladle bottom blowing connection device (100) according to claim 6, characterized in that: The ladle bottom blowing connection device (100) further comprises a second sealing ring (140), wherein the second sealing ring (140) is mounted on the stopper (1252) or the limiting portion (1213) and is located between the stopper (1252) and the limiting portion (1213).

8. The ladle bottom blowing connection device (100) according to any one of claims 1 to 7, characterized in that: The ladle car connection seat (120) further comprises a one-way valve (150) arranged on the second air inlet (120b).

9. The ladle bottom blowing connection device (100) according to any one of claims 1 to 7, characterized in that: The ladle connection seat (110) is provided with a plurality of first air inlets (110b), and the ladle car connection seat (120) is provided with a plurality of second air outlets (120c).

10. The ladle bottom blowing connection device (100) according to any one of claims 1 to 7, characterized in that: The ladle bottom blowing connection device (100) further comprises a third sealing ring (160), wherein the third sealing ring (160) is arranged on the side of the ladle connection seat (110) where the first air outlet (110c) is arranged, and protrudes from the ladle connection seat (110), wherein the first air outlet (110c) is located inside the third sealing ring (160), and the ladle connection seat (110) is further provided with a connecting through hole (110d) for connecting with the ladle (200).

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