Steel ladle argon blowing butt joint device

Abstract

The utility model relates to a steel ladle argon blowing butt joint device which comprises a female end butt joint assembly, a male end butt joint assembly and a centering assembly. The female end butt joint assembly is arranged on the steel ladle and used for receiving the argon transmitted by the male end butt joint assembly; the male end butt joint assembly is fixed relative to the ground and used for transmitting argon to the female end butt joint assembly; the centering assembly is arranged on the periphery of the male end butt joint assembly and used for restoring the male end butt joint assembly to the initial vertical state; firstly, due to the fact that the centering assembly is arranged, the butt joint rod can be restored to the initial vertical state, and the situation that the butt joint cannot be achieved due to the fact that the butt joint rod cannot be restored to the initial state after being used for a long time is avoided; and secondly, the detachable butt-joint ball head is arranged at the end part of the butt-joint rod, so that the butt-joint ball head is convenient to replace, and the use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of auxiliary equipment in steelmaking production process, in particular to a ladle argon blowing docking device. Background Art

[0002] Ladle argon blowing technology is one of the most critical technologies in the existing ladle refining furnace. Argon blowing and stirring can effectively promote the material conversion between steel and slag. It can not only remove non-metallic inclusions, but also accelerate the deoxidation and decarbonization reactions of molten steel, which is beneficial to the uniform temperature of molten steel and the precise adjustment of complex chemical composition.

[0003] The existing argon blowing technology requires the use of a ladle argon blowing docking device, which is used to connect the ladle with the argon blowing device to blow argon into the ladle. The existing ladle argon blowing docking device technology is relatively mature, but there are still certain defects in the actual use process, such as: in order to ensure the docking effect and the success rate of docking during use of the existing ladle argon blowing docking device, it is necessary to enable the docking rod in the ladle argon blowing docking device to be able to be offset to a certain extent, but the existing ladle argon blowing docking device lacks a centering structure for restoring the docking rod to its initial vertical state. As the docking rod is used for a long time, the docking rod will be irreversibly tilted. At this time, the docking rod will exceed the allowable error range of the ladle argon blowing docking device, resulting in failure to dock normally.

[0004] Therefore, it is a technical problem to be solved urgently in the art to provide a ladle argon blowing docking device having a centering structure for restoring the docking rod to an initial vertical state. Utility Model Content

[0005] In order to solve at least one of the above technical problems, the utility model provides a ladle argon blowing docking device.

[0006] The utility model is implemented as follows: a ladle argon blowing docking device comprises a female end docking assembly, a male end docking assembly and a centering assembly; the female end docking assembly is arranged on the ladle and is used to receive argon gas transmitted by the male end docking assembly; the male end docking assembly is fixed relative to the ground and is used to transmit argon gas to the female end docking assembly; the centering assembly is arranged on the periphery of the male end docking assembly and is used to restore the male end docking assembly to an initial vertical state.

[0007] Optionally, the female end docking assembly includes a trumpet-shaped guide plate, a sealing ring and an inner ball limit ring; the trumpet-shaped guide plate has an argon through hole at its axial position for allowing argon gas to flow; the sealing ring is located at the front end of the argon through hole to prevent argon gas leakage; the inner ball limit ring is located outside the sealing ring and is used to fit the male end docking assembly.

[0008] Optionally, the female end docking assembly further includes a filter screen located at the end of the through hole for filtering impurities in the argon gas.

[0009] Optionally, the male-end docking assembly includes a support plate, a docking rod, a protective cover and a main spring; the support plate is provided with a docking rod through hole in the middle that cooperates with the docking rod and is used to fix and constrain the movement direction of the docking rod; the docking rod is located in the docking rod through hole of the support plate and is used to contact the female-end docking assembly; the protective cover is located on the periphery of the docking rod and is used to constrain and protect the main spring; the main spring is located between the support plate and the protective cover and is used to provide a restoring force in the axial direction of the docking rod.

[0010] Optionally, the docking rod includes a rod body and a detachable docking ball head; the rod body is used to cooperate with the support plate and carry the detachable docking ball head; the detachable docking ball head is movably connected to one end of the rod body away from the support plate, and is used to directly contact the female end docking assembly.

[0011] Optionally, the centering assembly includes a supporting sleeve and at least one centering tower spring; the supporting sleeve is located on the periphery of the docking rod and cooperates with the docking rod through hole of the support plate, and is used to receive the force of the centering tower spring while preventing the docking rod from being worn; the centering tower spring is located on the periphery of the supporting sleeve, and is used to correct the docking rod back to its initial vertical state.

[0012] Optionally, the supporting sleeve includes a cylinder and an end plate; the cylinder is located between the periphery of the docking rod and the docking rod through hole of the support plate, and is used to prevent the docking rod from being worn; the end plate is located at both ends of the cylinder and is used to receive the force of the centering tower spring.

[0013] Optionally, the large diameter end of the centering tower spring is connected to the support disk, and the small diameter end is connected to the end plate.

[0014] Optionally, the inner diameter of one end of the centering spring with a smaller diameter is equal to the outer diameter of the cylinder.

[0015] Optionally, there are two centering tower springs in the centering assembly, which are respectively arranged at two ends of the support plate opposite to each other.

[0016] The beneficial technical effects of implementing the utility model are as follows: first, since the utility model is provided with a centering component, the docking rod can be restored to its original vertical state to prevent the docking rod from being unable to restore to its original state after long-term use and becoming unable to dock; second, since the utility model provides a detachable docking ball head at the end of the docking rod, it is convenient to replace the docking ball head and reduce the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an axonometric view of the utility model;

[0018] Figure 2 It is a full cross-sectional view of the utility model. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] It should be noted that if the embodiments of the present utility model involve directional indications, such as up, down, left, right, front, back, etc., then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly. In addition, if the embodiments of the present utility model involve descriptions such as "first, second", "S1, S2", "step one, step two", etc., then such descriptions are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features or indicating the execution order of the method, etc. Those skilled in the art can understand that everything that does not violate the key points of the utility model under the technical concept of the utility model should be included in the protection scope of the utility model.

[0021] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0022] like Figure 1-2 As shown, a ladle argon blowing docking device includes a female docking assembly, a male docking assembly and a centering assembly; the female docking assembly is arranged on the ladle and is used to receive argon gas transmitted by the male docking assembly; the male docking assembly is fixed relative to the ground and is used to transmit argon gas to the female docking assembly; the centering assembly is arranged on the periphery of the male docking assembly and is used to restore the male docking assembly to an initial vertical state.

[0023] For example, when the female docking assembly needs to be docked with the male docking assembly, the ladle with the female docking assembly installed is first moved to within the allowable error range above the male docking assembly. At this time, the male docking assembly is in an initial vertical state, but the axis of the female docking assembly and the axis of the male docking assembly are not on the same vertical vertical line. Then the ladle is gradually lowered. As the female docking assembly gradually descends, the female docking assembly will guide the two toward the same vertical vertical line. During the guiding process, due to the heavy mass of the ladle and the fact that the axes of the two are not on the same vertical line, the female docking assembly will exert a certain force on the male docking assembly, causing the axis of the male docking assembly to be deflected to a certain extent, and the deflected state will be maintained for docking until the argon blowing operation of the ladle is completed. At this time, the centering assembly is deformed and is in a force storage state; when the argon blowing operation of the ladle is completed, the female docking assembly is separated from the male docking assembly. At this time, the centering assembly acts to release the previous deformation force and restore the male docking assembly to its initial vertical state, so as to prevent the male docking assembly from irreversible deformation, which causes the male docking assembly to fail.

[0024] The key of the utility model is that a centering component is arranged on the periphery of the male end docking component, and after the docking operation is completed, the male end docking component can be restored to the initial vertical state to prevent the male end docking component from irreversible deflection. Under the premise of ensuring the normal use of the male end docking component, the service life of the male end docking component is improved and the use cost is reduced.

[0025] like Figure 1-2 As shown, the female end docking assembly may optionally include but is not limited to a trumpet-shaped guide plate 1, a sealing ring 2 and an inner ball limit ring 3; the trumpet-shaped guide plate 1 has an argon through hole at its axial position for allowing argon gas to flow; the sealing ring 2 is located at the front end of the argon through hole to prevent argon gas leakage; the inner ball limit ring 3 is located outside the sealing ring 2 and is used to fit the male end docking assembly.

[0026] For example, when the female-end docking assembly and the male-end docking assembly are docked, the trumpet-shaped guide plate 1 first contacts the male-end docking assembly. As the ladle gradually descends, under the guidance of the trumpet-shaped guide plate 1, the axis of the trumpet-shaped guide plate 1 will gradually coincide with the axis of the male-end docking assembly until the male-end docking assembly fits with the inner ball limit ring 3, thus completing the docking of the female-end docking assembly and the male-end docking assembly. When the argon blowing operation is performed, the sealing ring 2 will restrict the argon gas to prevent leakage of the argon gas.

[0027] Specifically, the trumpet-shaped guide plate 1 is used to guide the male-end docking component so that the female-end docking component can be connected to the male-end docking component, and the argon through hole arranged inside is used for the circulation of argon gas; the sealing ring 2 is located at the front end of the argon through hole, and when the male-end docking component is matched with the female-end docking component, it can prevent argon gas leakage; the inner ball limit ring 3 is located outside the sealing ring 2, and is used to fit the male-end docking component so that the two can fit more closely, thereby improving the stability of the connection.

[0028] It is worth noting that in this embodiment, only the relative positions and functions of the trumpet-shaped guide plate 1, the sealing ring 2 and the inner ball limit ring 3 are limited, but their materials, sizes, etc. are not limited. In other words, the materials, sizes, etc. of the trumpet-shaped guide plate 1, the sealing ring 2 and the inner ball limit ring 3 can be arbitrarily set by technical personnel in this field according to actual conditions.

[0029] Preferably, the sealing ring 2 is a high-temperature metal sealing ring.

[0030] For example, due to the high ambient temperature of the ladle argon blowing operation, if conventional rubber sealing rings are used, their sealing effect and service life will be difficult to guarantee. Therefore, the use of high-temperature metal sealing rings can effectively guarantee the sealing effect and service life.

[0031] Preferably, Figure 2 As shown, the female end docking assembly may optionally include, but is not limited to, a filter screen 4 located at the end of the argon through hole for filtering impurities in the argon gas.

[0032] For example, since there may be certain impurities in the argon gas used in industry, such impurities may block the argon gas holes, resulting in poor circulation of the argon gas and affecting the quality of the final product. Therefore, a filter screen 4 is installed at the end of the argon gas hole to isolate the impurities in the argon gas, so as to prevent the impurities from blocking the argon gas holes and affecting the quality of the final product.

[0033] It is worth noting that in this embodiment, only the installation position and function of the filter 4 are limited, but its size, material, style, etc. are not limited. In other words, the size, material, style, etc. of the filter 4 can be set by technical personnel in this field according to actual conditions.

[0034] like Figure 1-2As shown, the male end docking assembly may optionally include but is not limited to a support plate 5, a docking rod 6, a protective cover 7 and a main spring 8; the support plate 5 is provided with a docking rod through hole in the middle that matches the docking rod 6 and is used to fix and constrain the movement direction of the docking rod 6; the docking rod 6 is located in the docking rod through hole of the support plate 5 and is used to contact the female end docking assembly; the protective cover 7 is located on the periphery of the docking rod 6 and is used to constrain and protect the main spring 8; the main spring 8 is located between the support plate 5 and the protective cover 7 and is used to provide a restoring force in the axial direction of the docking rod 6.

[0035] For example, when the female-end docking assembly and the male-end docking assembly are docked, as the ladle gradually descends, the docking rod 6 will first contact the trumpet-shaped guide disk 1 in the female-end docking assembly. As the ladle gradually descends, under the guidance of the trumpet-shaped guide disk 1, the docking rod 6 will gradually coincide with the axis of the trumpet-shaped guide disk 1 and achieve preliminary docking. After the preliminary docking is completed, in order to ensure the tightness of the docking, the ladle will continue to descend a certain distance, and under the action of the gravity of the ladle, the docking rod 6 will also move axially downward a certain distance. At this time, the main spring 8 will be compressed and give the docking rod 6 an upward thrust, so that the docking rod 6 has a tendency to move upward, and thereby achieve close contact between the docking rod 6 and the inner ball limit ring 3, that is, the docking of the female-end docking assembly and the male-end docking assembly is completed.

[0036] Specifically, a docking rod through hole matching the docking rod 6 is provided in the middle of the support plate 5, which is used to fix and constrain the movement direction of the docking rod 6, so that the axis of the docking rod 6 will not be excessively deflected, and at the same time ensure that the docking rod 6 can move axially; the docking rod 6 is used to contact the female end docking assembly; the protective cover 7 is located on the periphery of the docking rod 6, and is used to constrain and protect the main spring 8, and to apply the elastic force of the main spring 8 to the docking rod 6; the main spring 8 is located between the support plate 5 and the protective cover 7, and is used to provide a restoring force in the axial direction of the docking rod 6, so that the docking rod 6 can return to its initial state.

[0037] Since the docking rod 6 needs to contact with the trumpet-shaped guide plate 1, and the contact mode is surface contact, it is easy to cause local wear on the end of the docking rod 6. When the wear reaches a certain degree, the docking rod 6 needs to be replaced as a whole. The replacement of the docking rod 6 is relatively complicated. Frequent replacement of the docking rod 6 will lead to a significant decrease in operating efficiency. The docking rod 6 has less wear in the rod body area and can still meet the use requirements. For this reason, the utility model provides a preferred embodiment.

[0038] Preferably, Figure 1-2 As shown, the docking rod 6 may optionally include but is not limited to a rod body 601 and a detachable docking ball head 602; the rod body 601 is used to cooperate with the support plate 5 and carry the detachable docking ball head 602; the detachable docking ball head 602 is movably connected to the end of the rod body 601 away from the support plate 5, and is used to directly contact the female end docking assembly.

[0039] For example, when the end of the docking rod 6 is severely worn and needs to be replaced, it is only necessary to remove the detachable docking ball head 602 from the rod body 601, and then install the new detachable docking ball head 602 to the rod body 601 to complete the replacement, which greatly shortens the replacement time of the docking rod 6 and improves production efficiency.

[0040] Specifically, the rod body 601 is used to carry the detachable docking ball head 602 , so that the detachable docking ball head 602 can contact the trumpet-shaped guide plate 1 at a certain height; the detachable docking ball head 602 is used to directly contact the trumpet-shaped guide plate 1 .

[0041] More preferably, a sealing ring is provided at the connection between the rod body 601 and the detachable docking ball head 602 .

[0042] For example, the sealing ring is used to prevent the argon gas in the docking rod 6 from leaking.

[0043] like Figure 1-2 As shown, the centering assembly includes a supporting sleeve 9 and at least one centering tower spring 10; the supporting sleeve 9 is located on the periphery of the docking rod 6 and cooperates with the docking rod through hole of the support plate 5, and is used to receive the force of the centering tower spring 10 while preventing the docking rod 6 from being worn; the centering tower spring 10 is located on the periphery of the supporting sleeve 9, and is used to correct the docking rod 6 back to its initial vertical state.

[0044] For example, during docking, the docking rod 6 is deflected by the force. At this time, the supporting sleeve 9 will transfer the deflection force on the docking rod 6 to the centering tower spring 10. The centering tower spring 10 will be deformed and compressed after being subjected to the force until the docking is completed. After the docking is completed, the centering tower spring 10 will release the deformation pressure and evenly transfer it to the docking rod 6 through the supporting sleeve 9, so as to restore the docking rod 6 to its original vertical state.

[0045] Preferably, Figure 2 As shown, the supporting sleeve 9 includes a cylinder 901 and an end plate 902; the cylinder 901 is located between the periphery of the docking rod 6 and the docking rod through hole of the support plate 5, and is used to prevent the docking rod 6 from being worn; the end plate 902 is located at both ends of the cylinder 901, and is used to receive the force of the centering tower spring 10.

[0046] For example, during the process of deflecting the docking rod 6 and restoring the docking rod 6 to its initial vertical state, the cylinder 901 is used to evenly receive the deflection force of the docking rod 6 to ensure that the centering tower spring 10 can be evenly stressed and prevent damage to the docking rod 6 caused by excessive local stress; the end plate 902 is used to fix the small diameter end of the centering tower spring 10 so that the cylinder 901 can be evenly stressed and constrain the centering tower spring 10 at the same time.

[0047] Preferably, Figure 2As shown, the large diameter end of the centering tower spring 10 is connected to the support plate 5, and the small diameter end is connected to the end plate 902.

[0048] For example, since the cross-section of the centering tower spring 10 is a trapezoidal shape, in order to ensure that the centering tower spring 10 can fully play its role, the large diameter end of the centering tower spring 10 is connected to the support plate 5, and the small diameter end is connected to the end plate 902. This can effectively stabilize the centering tower spring 10, and at the same time ensure that it can stably bear force and release force after bearing force.

[0049] Preferably, Figure 2 As shown, the inner diameter of the small diameter end of the centering spring 10 is equal to the outer diameter of the cylinder 901.

[0050] For example, in order to ensure that the force released by the centering tower spring 10 after deformation can be fully transmitted to the docking rod 6, the inner diameter of the small diameter end of the centering tower spring 10 is matched with the outer diameter of the cylinder 901, which is beneficial to the force of the docking rod 6 and ensures that the elastic force released by the centering tower spring 10 can be fully transmitted to the docking rod 6.

[0051] During the recovery process of the docking rod 6 after deflection, only the centering tower spring 10 can provide restoring force for the docking rod 6, and the docking rod 6 itself is relatively long. If the number of the centering tower springs 10 is small, their restoring force is limited, and it is difficult to quickly restore the docking rod 6 to the initial vertical state. Therefore, the utility model provides a preferred embodiment.

[0052] Preferably, Figure 2 As shown, there are two centering springs 10 in the centering assembly, which are respectively arranged at two ends of the support plate 5 facing each other.

[0053] For example, there are two centering tower springs 10 , which are arranged opposite to each other at the two ends of the support plate 5 , so as to restore the docking rod 6 from both ends of the support plate 5 , thereby enabling the docking rod 6 to be quickly restored to its initial vertical state.

[0054] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A ladle argon blowing docking device, characterized in that: It includes a female end docking assembly, a male end docking assembly and a centering assembly; The female end docking assembly is arranged on the ladle and is used to receive the argon gas transmitted by the male end docking assembly; A male end docking assembly, fixed relative to the ground, used to transmit argon gas to the female end docking assembly; A centering assembly, arranged at the periphery of the male end docking assembly, used to restore the male end docking assembly to an initial vertical state; The centering assembly comprises a supporting sleeve (9) and at least one centering spring (10); A supporting sleeve (9) is located at the periphery of the docking rod (6) and matches with the docking rod through hole of the supporting plate (5), and is used to receive the force of the centering tower spring (10) and prevent the docking rod (6) from being worn; The centering spring (10) is located on the periphery of the supporting sleeve (9) and is used to correct the docking rod (6) back to an initial vertical state.

2. The ladle argon blowing docking device according to claim 1, characterized in that: The female end docking assembly comprises a trumpet-shaped guide plate (1), a sealing ring (2) and an inner ball limiting ring (3); A trumpet-shaped guide plate (1) is provided with an argon through hole at its axial center for allowing argon gas to flow; A sealing ring (2), located at the front end of the argon through hole, for preventing argon gas leakage; The inner ball limiting ring (3) is located outside the sealing ring (2) and is used to fit the male end docking assembly.

3. The ladle argon blowing docking device according to claim 2, characterized in that: The female end docking assembly also includes a filter screen (4) located at the end of the argon through hole and used for filtering impurities in the argon gas.

4. The ladle argon blowing docking device according to claim 2, characterized in that: The male end docking assembly comprises a support plate (5), a docking rod (6), a protective cover (7) and a main spring (8); A support plate (5) is provided with a docking rod through hole in the middle thereof, which is matched with the docking rod (6) and is used to fix and restrict the movement direction of the docking rod (6); A docking rod (6), located in the docking rod through hole of the support plate (5), and used for contacting the female end docking assembly; A protective cover (7) is located outside the docking rod (6) and is used to restrain and protect the main spring (8); The main spring (8) is located between the support plate (5) and the protective cover (7) and is used to provide a restoring force in the axial direction of the docking rod (6).

5. The ladle argon blowing docking device according to claim 4, characterized in that: The docking rod (6) comprises a rod body (601) and a detachable docking ball head (602); The rod body (601) is used to cooperate with the support plate (5) and carry the detachable docking ball head (602); The detachable docking ball head (602) is movably connected to the end of the rod body (601) away from the support plate (5) and is used for directly contacting the female end docking assembly.

6. The ladle argon blowing docking device according to claim 5, characterized in that: The supporting sleeve (9) comprises a cylinder (901) and an end plate (902); The cylinder (901) is located between the periphery of the docking rod (6) and the docking rod through hole of the support plate (5) and is used to prevent the docking rod (6) from being worn; The end plates (902) are located at both ends of the cylinder (901) and are used to receive the force of the centering tower spring (10).

7. The ladle argon blowing docking device according to claim 6, characterized in that: The large-diameter end of the centering tower spring (10) is connected to the support plate (5), and the small-diameter end is connected to the end plate (902).

8. The ladle argon blowing docking device according to claim 7, characterized in that: The inner diameter of one end of the centering tower spring (10) with a small diameter is equal to the outer diameter of the cylinder (901).

9. The ladle argon blowing docking device according to any one of claims 1 to 8, characterized in that: There are two centering tower springs (10) in the centering assembly, which are respectively arranged at two ends of the support plate (5) facing each other.

Images