Air blowing device

Abstract

The present application relates to a kind of blowing device.The blowing device includes emitting component and receiving component;Receiving component includes inner receiving joint part and outer receiving joint part;Inner receiving joint part and outer receiving joint part are annular, and outer receiving joint part is sleeved on the outside of inner receiving joint part;Receiving air passage has air inlet end;Emitting component has emitting joint, and emitting joint is used to be docked with the receiving component;Emitting joint includes inner emitting joint part and outer emitting joint part;Inner emitting joint part and outer emitting joint part are annular, and outer emitting joint part is sleeved on the outside of inner emitting joint part;Emitting air passage has air outlet end;Emitting component can be docked with receiving component;When emitting component and receiving component are docked, the air outlet end of emitting air passage and the air inlet end of receiving air passage are communicated, inner emitting joint part and inner receiving joint part are connected and form inner side seal, and outer emitting joint part and outer receiving joint part are connected and form outer side seal.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal smelting, and particularly to a blowing device. BACKGROUND

[0002] When steel is refined, argon blowing process is usually performed. When the argon blowing process is performed, the launching assembly and the receiving assembly need to be docked. When the two are docked, the air passages on the launching assembly and the receiving assembly are communicated, and argon gas and the like can be blown into the ladle along the air passages. The argon gas and the like blown into the ladle can achieve the effects of uniformizing the temperature and composition of molten steel, removing harmful gases and inclusions, and improving the quality of molten steel.

[0003] In the prior art, when the launching assembly and the receiving assembly are docked, there are two ways of manual docking and automatic docking. Manual operation docking requires the operator to plug in and pull out and connect the pipeline in the high-temperature dangerous area, which is easy to cause safety accidents such as molten steel splashing and flying out to hurt people, and also easy to cause the ladle to turn over and burn the argon blowing pipeline, so this process has been gradually replaced. At present, the automatic docking mode is mainly used in actual production.

[0004] A universal automatic argon feeding device is disclosed in Chinese Patent No. CN 109652614 A, which includes an argon feeding male connector and an argon feeding female connector. The argon feeding male connector includes a top cap, and the argon feeding female connector includes a sealing seat. Under the action of gas pressure, the top cap of the argon feeding male connector is docked with the sealing seat of the argon feeding female connector and sealing is achieved. In this patent, the sealing seat is made of brass. In this case, if the top cap is made of hard material such as stainless steel, the top cap and the sealing seat will have good wear resistance when they are docked, but the sealing performance at the joint of the two will be poor. If the top cap is made of soft material such as rubber, the sealing performance between the top cap and the sealing seat will be good when they are docked, but the wear resistance will be poor. Moreover, the scene of the argon blowing process is a high-temperature environment, and the top cap made of rubber and the like will accelerate aging and wear in the high-temperature environment, and the service life will be short. SUMMARY

[0005] The present application provides a blowing device to solve the technical problems of poor sealing performance or poor durability when the existing argon feeding device docks the launching assembly and the receiving assembly.

[0006] The present invention provides an air blowing device comprising a launching assembly and a receiving assembly; the receiving assembly includes an inner receiving connector and an outer receiving connector; the inner and outer receiving connectors are annular, and the outer receiving connector is sleeved on the outside of the inner receiving connector; the receiving assembly forms a receiving air passage on the inner side of the inner receiving connector, and the receiving air passage has an air inlet end; the launching assembly has a launching connector for docking with the receiving assembly; the launching connector includes an inner launching connector and an outer launching connector; the inner and outer launching connectors are annular, and the outer launching connector is sleeved on the outside of the inner launching connector; the launching connector forms a launching air passage on the inner side of the inner launching connector, and the launching air passage has an air outlet end; the launching assembly and the receiving assembly are dockable; when the launching assembly and the receiving assembly are docked, the air outlet end of the launching air passage and the air inlet end of the receiving air passage are connected, the inner launching connector and the inner receiving connector are connected to form an inner seal, and the outer launching connector and the outer receiving connector are connected to form an outer seal.

[0007] Wherein, at least one of the inner transmitter connector and the inner receiver connector is made of an elastic material, and the outer transmitter connector and the outer receiver connector are made of a rigid material; the inner transmitter connector, the inner receiver connector, the outer transmitter connector, and the outer receiver connector are configured such that when the outer transmitter connector and the outer receiver connector are connected to each other, the inner transmitter connector and the inner receiver connector are connected to each other in a corresponding manner, and the portion made of elastic material at the connection point is deformed under pressure; so as to seal the connection point between the outlet end of the transmitter air passage and the inlet end of the receiver air passage.

[0008] Specifically, on the side of the outlet end of the emission channel, the inner emission connector is located inside the outer emission connector, or the inner emission connector is flush with the outer emission connector.

[0009] The external launch connector is movable along the axial direction of the launch air passage; the launch connector also includes an elastic element, one end of which is fixed and the other end is connected to the external launch connector; the elastic element applies its own elastic force to the external launch connector so that the external launch connector tends to move towards the air outlet end of the launch air passage.

[0010] When the external transmitter connector is moved to a state of docking with the external receiver connector due to external force, the internal transmitter connector is located inside the external transmitter connector on the side of the air outlet of the emission channel, or the internal transmitter connector is flush with the external transmitter connector.

[0011] When the outer emitting connector part is moved to the state of being connected with the outer receiving connector part under the action of external force, the inner emitting connector part partially protrudes from the outer emitting connector part on the side of the air outlet of the emitting air duct; and when the outer emitting connector part is not subjected to external force and is not moved in the direction opposite to the air outlet direction of the emitting air duct, the inner emitting connector part is located in the outer emitting connector part.

[0012] The inner emitting connector part is made of elastic material, and the inner receiving connector part is made of rigid material.

[0013] The end of the inner receiving connector part for connecting with the inner emitting connector part is outwardly convex; and the end of the inner emitting connector part for connecting with the inner receiving connector part is flush with the layer or inwardly concave.

[0014] The end of the outer emitting connector part for connecting with the outer receiving connector part has an arc surface shape, which protrudes towards the outer receiving connector part; the outer receiving connector part has an arc surface shape matching the concave-convex of the outer emitting connector part; or the end of the outer receiving connector part for connecting with the outer emitting connector part has an arc surface shape, which protrudes towards the outer emitting connector part; and the outer emitting connector part has an arc surface shape matching the concave-convex of the outer receiving connector part.

[0015] The receiving assembly is provided with a guide slope surface, which includes a first slope surface on the outer side and a second slope surface on the inner side, and the slope angle of the first slope surface is greater than that of the second slope surface.

[0016] The air blowing device further comprises a tail seat assembly connected with the emitting assembly through a quick release structure.

[0017] The quick release structure comprises oppositely arranged first and second connecting members; the end of the first connecting member opposite to the second connecting member is provided with a clamping claw extending laterally; the clamping claw and the second connecting member can rotate relative to each other; the end of the second connecting member opposite to the first connecting member is provided with a limiting portion and a notch in the circumferential direction; the side of the limiting portion opposite to the first connecting member is provided with a mounting space; the notch is matched with the clamping claw, so that the clamping claw can pass through the notch; one of the first and second connecting members is arranged on the tail seat assembly, and the other is arranged on the emitting assembly.

[0018] Compared with the prior art, the air blowing device provided by the application has the following advantages:

[0019] The blowing device provided by the application has a double-layer structure on the outside of the emitting joint of the emitting assembly, which is respectively an inner emitting joint part on the inside and an outer emitting joint part on the outside; the receiving assembly also has a corresponding double-layer structure on the outside of the receiving air channel, which is respectively an inner receiving joint part on the inside and an outer receiving joint part on the outside. When the emitting joint of the emitting assembly is connected with the receiving assembly, the gas outlet of the emitting air channel is communicated with the gas inlet of the receiving air channel, and at the same time, a double seal is formed on the outside of the emitting air channel and the receiving air channel, which is respectively an inner seal formed by the connection of the inner emitting joint part and the inner receiving joint part, and an outer seal formed by the connection of the outer emitting joint part and the outer receiving joint part. The double seal described above helps to achieve better sealing effect. Moreover, during the process of connecting the emitting joint of the emitting assembly with the receiving assembly for blowing, the outer emitting joint part and the outer receiving joint part on the outside completely wrap the inner emitting joint part and the inner receiving joint part on the inside after being connected, which can play a heat insulation role and protect the inner emitting joint part and the inner receiving joint part. Therefore, the inner emitting joint part and the inner receiving joint part can be made of materials that are not resistant to high temperature but have better sealing performance, so that the inner seal formed by the inner emitting joint part and the inner receiving joint part can take into account both sealing performance and durability, and better performance is achieved in both aspects. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate an embodiment consistent with the present application and, together with the description, serve to explain the principles of the application.

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained based on these drawings without creative labor.

[0022] Figure 1 Structure diagram of the receiving assembly of the blowing device in the embodiment of the present application;

[0023] Figure 2 Structure diagram of the emitting assembly of the blowing device in the embodiment of the present application;

[0024] Figure 3 Structure diagram of the tail seat assembly of the blowing device in the embodiment of the present application;

[0025] Figure 4 State diagram of the emitting joint of the emitting assembly and the receiving assembly of the blowing device in the embodiment of the present application;

[0026] Figure 5Fig. 1 is a schematic diagram of the state before the transmitting assembly and the receiving assembly of the air blowing device of the embodiment of the present application are connected;

[0027] Figure 6 Fig. 2 is a schematic diagram of the state after the transmitting assembly and the receiving assembly of the air blowing device of the embodiment of the present application are connected;

[0028] Figure 7 Fig. 3 is a schematic diagram of the exploded state of the transmitting assembly, the receiving assembly and the tail seat assembly of the air blowing device of the embodiment of the present application; Figure 1

[0029] Figure 8 Fig. 4 is a schematic diagram of the exploded state of the transmitting assembly, the receiving assembly and the tail seat assembly of the air blowing device of the embodiment of the present application; Figure 2

[0030] Fig. 5 is a schematic diagram of the air blowing device of the embodiment of the present application;

[0031] 10 - transmitting assembly; 11 - inner transmitting joint part; 12 - outer transmitting joint part; 13 - transmitting air channel; 14 - elastic member; 15 - air cylinder; 151 - piston rod; 16 - transmitting joint main body; 17 - stop part; 18 - sealing member;

[0032] 20 - receiving assembly; 21 - inner receiving joint part; 22 - outer receiving joint part; 23 - receiving air channel; 24 - guide slope surface; 241 - first slope surface; 242 - second slope surface;

[0033] 30 - tail seat assembly; 31 - tail seat bottom plate; 32 - spring; 33 - connecting pipe;

[0034] 40 - quick release structure; 41 - first connecting member; 411 - clamping claw; 42 - second connecting member; 421 - limiting part; 422 - notch. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] The embodiments of the air blowing device, the transmitting joint, the transmitting assembly and the receiving assembly provided by the present application will be described below in combination with the drawings.

[0037] In one embodiment of the air blowing device of the present application, as shown in Figure 1 , Figure 2 and Figure 4 ​​As shown, the gas blowing device comprises a transmitting assembly 10 and a receiving assembly 20. The receiving assembly 20 is arranged on the object such as a ladle waiting to be blown with gas; the receiving assembly 20 comprises an inner receiving joint part 21 and an outer receiving joint part 22; the inner receiving joint part 21 and the outer receiving joint part 22 are annular, the outer receiving joint part 22 is sleeved on the outside of the inner receiving joint part 21; and the receiving assembly 20 is formed with a receiving gas channel 23 on the inside of the inner receiving joint part 21, the receiving gas channel 23 has a gas inlet end. The transmitting assembly 10 has a transmitting joint, the transmitting joint is used to be connected with the receiving assembly 20; the transmitting joint comprises an inner transmitting joint part 11 and an outer transmitting joint part 12; the inner transmitting joint part 11 and the outer transmitting joint part 12 are annular, the outer transmitting joint part 12 is sleeved on the outside of the inner transmitting joint part 11; and the transmitting joint is formed with a transmitting gas channel 13 on the inside of the inner transmitting joint part 11, the transmitting gas channel 13 has a gas outlet end. The transmitting assembly 10 can be connected with the receiving assembly 20; when the transmitting assembly 10 is connected with the receiving assembly 20, the gas outlet end of the transmitting gas channel 13 and the gas inlet end of the receiving gas channel 23 are communicated, the inner transmitting joint part 11 and the inner receiving joint part 21 are connected and form an inside seal, and the outer transmitting joint part 12 and the outer receiving joint part 22 are connected and form an outside seal.

[0038] In the gas blowing device of the embodiment, the receiving assembly 20 is arranged on the object such as a ladle waiting to be blown with gas, for example, the receiving gas channel on the receiving assembly 20 can be communicated with the molten steel in the ladle; the transmitting assembly 10 is arranged on the ladle car or the refining equipment such as VD, VOD, RH furnace having a gas blowing demand, or can be arranged on the continuous casting rotary table, the transmitting gas channel 13 on the transmitting assembly 10 is connected with the gas source; when the transmitting assembly 10 is connected with the receiving assembly 20, the transmitting gas channel 13 on the transmitting assembly 10 and the receiving gas channel 23 on the receiving assembly 20 are communicated, so that the gas source can blow gas into the molten steel in the ladle through the transmitting gas channel 13 and the receiving gas channel 23, the blown gas can be argon, also can be nitrogen, carbon monoxide, water vapor, air, etc., and also can blow different gases into the molten steel in sequence. By blowing gas into the molten steel, the content of the gas dissolved in the molten steel can be reduced, the non-metallic inclusions in the molten steel can be removed, and the composition and temperature of the molten steel before pouring can be made uniform, the impact toughness of the steel can be improved, etc.

[0039] In this embodiment, the transmitting joint of the transmitting assembly 10 has a double-layer structure on the outside of the transmitting air passage 13, which is respectively the inner transmitting joint part 11 on the inside and the outer transmitting joint part 12 on the outside; the receiving assembly 20 also has a corresponding double-layer structure on the outside of the receiving air passage 23, which is respectively the inner receiving joint part 21 on the inside and the outer receiving joint part 22 on the outside. When the transmitting joint of the transmitting assembly 10 is docked with the receiving assembly 20, the gas outlet end of the transmitting air passage 13 communicates with the gas inlet end of the receiving air passage 23, and at the same time, a double seal is formed on the outside of the transmitting air passage 13 and the receiving air passage 23, which is respectively the inner seal formed by the joint of the inner transmitting joint part 11 and the inner receiving joint part 21, and the outer seal formed by the joint of the outer transmitting joint part 12 and the outer receiving joint part 22. The double seal described above, compared with the single seal in the prior art, helps to achieve better sealing effect.

[0040] In addition, during the docking of the transmitting joint of the transmitting assembly 10 and the receiving assembly 20 for blowing, the outer transmitting joint part 12 and the outer receiving joint part 22 on the outside completely wrap the inner transmitting joint part 11 and the inner receiving joint part 21 on the inside after docking, which can play a heat insulation role and protect the inner transmitting joint part 11 and the inner receiving joint part 21. Therefore, the inner transmitting joint part 11 and the inner receiving joint part 21 can be made of materials that are not resistant to high temperature but have better sealing performance, so that the inner seal formed by the inner transmitting joint part 11 and the inner receiving joint part 21 can take into account both sealing performance and durability, achieving better performance in both aspects.

[0041] In an embodiment of the blowing device, at least one of the inner transmitting joint part 11 and the inner receiving joint part 21 is made of elastic material, and the outer transmitting joint part 12 and the outer receiving joint part 22 are made of rigid material. The inner transmitting joint part 11, the inner receiving joint part 21, the outer transmitting joint part 12, and the outer receiving joint part 22 are configured such that when the outer transmitting joint part 12 and the outer receiving joint part 22 are correspondingly docked, the inner transmitting joint part 11 and the inner receiving joint part 21 are correspondingly docked, and the part made of elastic material at the joint of the inner transmitting joint part 11 and the inner receiving joint part 21 is deformed under pressure; so that the joint of the gas outlet end of the transmitting air passage 13 and the gas inlet end of the receiving air passage 23 is sealed.

[0042] In this embodiment, the outer transmitting joint part 12 in the transmitting assembly 10 and the outer receiving joint part 22 of the receiving assembly 20 can be in abutting contact with each other, and a sealing relationship can be formed between the two, while the inner transmitting joint part 11 in the transmitting assembly 10 and the inner receiving joint part 21 of the receiving assembly 20 can also be in abutting contact with each other, and an extrusion force can exist between the two. Since at least one of the inner transmitting joint part 11 and the inner receiving joint part 21 is made of elastic material, the extrusion force can cause the elastic material to deform. In the case of deformation of one or both of the inner transmitting joint part 11 and the inner receiving joint part 21, the sealing connection formed between the inner transmitting joint part 11 and the inner receiving joint part 21 can have better sealing performance.

[0043] In addition, during the abutting and blowing of the transmitting joint of the transmitting assembly 10 and the receiving assembly 20, the outer transmitting joint part 12 and the outer receiving joint part 22 on the outside completely wrap the inner transmitting joint part 11 and the inner receiving joint part 21 on the inside after abutting, which can play a heat insulation role and improve the accelerated aging and wear of the inner transmitting joint part 11 and the inner receiving joint part 21 made of elastic material due to high temperature, thereby improving the overall durability. Moreover, before abutting, the outer transmitting joint part 12 and the outer receiving joint part 22 on the outside can play a certain heat insulation role and improve the aging and damage of the inner transmitting joint part 11 and the inner receiving joint part 21 made of elastic material in a high-temperature environment.

[0044] In this embodiment, the extrusion force between the inner transmitting joint part 11 and the inner receiving joint part 21 can come from an externally applied pushing force. For example, as shown in Figure 2 , the transmitting assembly 10 can include a gas cylinder 15 connected with the transmitting joint to push the transmitting joint to move. When the transmitting assembly 10 is abutted with the receiving assembly 20, a pushing force is applied to the transmitting joint to move the transmitting joint and the transmitting joint thereof to the receiving assembly 20 and contact and abut together. After the abutting of the transmitting joint and the receiving assembly 20 is achieved, the pushing force continues to exist. The pushing force acts on the outer transmitting joint part 12 and the outer receiving joint part 22 to maintain the abutting and sealing between the outer transmitting joint part 12 and the outer receiving joint part 22. The pushing force acting on the inner transmitting joint part 11 and the inner receiving joint part 21 can form an extrusion force between the two, thereby causing the elastic material to deform.

[0045] Specifically, in the embodiment shown in Figure 2 , for the gas cylinder, when pushing the transmitting joint to approach the receiving assembly 20, as shown in Figure 5 and Figure 6 , and in combination with Figure 2Gas can be injected into a cavity (referred to as the first cavity) within the cylinder 15 to increase the pressure within that cavity, thereby pushing the transmitter connector towards the receiver assembly 20 under the influence of gas pressure. After the gas blowing is completed, the injection of gas into the first cavity is stopped, and the gas in the first cavity is discharged outwards. Gas is then injected into the opposite cavity (referred to as the second cavity), thereby pushing the transmitter connector away from the receiver assembly 20 under the influence of gas pressure. Alternatively, a spring can be installed inside the cylinder. The spring force (simultaneously accompanied by stopping the injection of gas into the first cavity and discharging the gas from the first cavity) can reset the cylinder, thereby moving the transmitter connector away from the receiver assembly 20.

[0046] Specifically, for the cylinder 15 described above, the gas injected into the first or second chamber can be argon or other gases used for blowing. For example, a pipe for gas flow can be arranged on the piston rod 151 of the cylinder 15, and this pipe can be connected to a gas source (either directly or through a connecting pipe 33 on the tailstock assembly 30 described later; to ensure sealing performance at this connection, a sealing element 18 can be provided at the end of the launching assembly 10 connected to the tailstock assembly 30 to achieve a sealed connection). Thus, the gas source can input gas into the cylinder 15, acting on the launching connector and causing it to move. Furthermore, the launching gas passage 13 on the launching connector can be connected to the cylinder. In this case, the gas source can input gas into the launching gas passage 13 via the cylinder, without the need for a separate pipe directly connecting the gas source and the launching gas passage 13.

[0047] In this embodiment, the launch connector may further include a launch connector body 16, on which a launch air passage 13 is formed. An inner launch connector portion 11 and an outer launch connector portion 12 are sequentially arranged on the outer periphery of the launch connector body 16, such as... Figure 2 As shown.

[0048] In this embodiment, since the air blowing device operates in a high-temperature environment, the elastic materials used for the inner transmitting connector 11 and the inner receiving connector 21 are selected as high-temperature resistant rubber, silicone, or similar materials. For the outer transmitting connector 12 and the outer receiving connector 22, high-temperature resistant and wear-resistant rigid materials, such as stainless steel or brass, can be used.

[0049] In one embodiment of the blowing device, the inner transmitting joint part 11 is made of elastic material, and the inner receiving joint part 21 is made of rigid material. The reason for such arrangement is that, as a part of the receiving assembly 20, the inner receiving joint part 21 is generally fixed on the object to be blown, such as a ladle, for a long time, that is, it may be in a high-temperature environment for a long time, and if the inner receiving joint part 21 is made of elastic material, it is easy to age and be damaged. Even if the inner receiving joint part 21 is made of elastic material that can resist high temperature, it is still inevitable to age and be damaged, only the speed of aging and damage is slower. Therefore, the inner receiving joint part 21 is made of rigid material. As for the inner transmitting joint part 11, it only interfaces with the receiving assembly 20 during the blowing process, and it is in a high-temperature environment for a relatively short time, and it is even less likely to age and be damaged, or the speed of aging and damage is slower, so it is more suitable to be made of elastic material.

[0050] In a further embodiment of the blowing device, on the side of the gas outlet end of the transmitting gas channel 13, the inner transmitting joint part 11 is located in the outer transmitting joint part 12, or the inner transmitting joint part 11 is flush with the outer transmitting joint part 12. That is, on the side of the gas outlet end of the transmitting gas channel 13, the inner transmitting joint part 11 does not protrude from the outer transmitting joint part 12; in the direction of the gas outlet of the transmitting gas channel 13, the inner transmitting joint part 11 is completely covered by the outer transmitting joint part 12 on its outer side. Such arrangement can reduce the size of the area of the inner transmitting joint part 11 exposed to the high-temperature environment to a greater extent, and the outer transmitting joint part 12 can provide more rigorous and complete protection and heat insulation for the inner transmitting joint part 11, thereby better improving the problem of easy aging and damage of elastic material.

[0051] In one embodiment of the blowing device, the outer transmitting joint part 12 is movable in the axial direction of the transmitting gas channel 13. The transmitting joint further comprises an elastic member 14, one end of which is fixed, and the other end is connected with the outer transmitting joint part 12; the elastic member 14 applies its elastic force on the outer transmitting joint part 12, so as to make the outer transmitting joint part 12 tend to move towards the direction of the gas outlet end of the transmitting gas channel 13.

[0052] In this embodiment, the outer transmitting joint part 12 can slide backward (with the gas outlet direction of the transmitting air channel 13 as front, and the opposite direction as back) when subjected to external force, and can return to the initial state when the external force disappears. Based on the above structure, when the transmitting assembly 10 and the receiving assembly 20 are docked, the impact and collision between the outer transmitting joint part 12 and the outer receiving joint part 22 when they are in contact can be buffered, and the elastic force of the elastic member 14 can also better keep the outer transmitting joint part 12 in the state of abutting against the outer receiving joint part 22, thereby improving the sealing performance between the outer transmitting joint part 12 and the outer receiving joint part 22.

[0053] According to the structure described in this embodiment, in combination with the size relationship between the inner transmitting joint part 11, the inner receiving joint part 21, the outer transmitting joint part 12 and the outer receiving joint part 22 shown in Figure 1 、 Figure 2 and Figure 4 , when the outer transmitting joint part 12 initially contacts the outer receiving joint part 22 of the receiving assembly 20 during the docking of the transmitting assembly 10 and the receiving assembly 20, the inner transmitting joint part 11 and the inner receiving joint part 21 have not yet been in contact or have been in contact but the inner transmitting joint part 11 has not yet deformed (for example, the inner transmitting joint part 11 is made of elastic material and the inner receiving joint part 21 is made of rigid material). At this time, if the transmitting joint is controlled to continue moving towards the receiving assembly 20, the outer receiving joint part 22 will generate an external reaction force on the outer transmitting joint part 12, causing the outer transmitting joint part 12 to move backward against the elastic force of the elastic member 14. At the same time, if the inner transmitting joint part 11 and the inner receiving joint part 21 have not yet contacted, they will further approach until they are in contact, and generate a pressing force along with the further movement of the transmitting joint; if they have already contacted, they will directly generate a pressing force; based on this pressing force, the inner transmitting joint part 11 deforms, thereby achieving better sealing at the joint between the inner transmitting joint part 11 and the inner receiving joint part 21.

[0054] In one embodiment of the air blowing device, when the outer transmitting joint part 12 is subjected to external force and moves against the elastic force of the elastic member 14 to the state of being docked with the outer receiving joint part 22 in the direction opposite to the gas outlet direction of the transmitting air channel 13, the inner transmitting joint part 11 is located inside the outer transmitting joint part 12 on the side of the gas outlet end of the transmitting air channel 13, or the inner transmitting joint part 11 is flush with the outer transmitting joint part 12.

[0055] In other words, in the state where the outer transmission joint part 12 is connected with the outer receiving joint part 22, the inner transmission joint part 11 does not protrude from the outer transmission joint part 12. In this state, the outer transmission joint part 12 has moved backward by a distance, and it can be determined that in the initial state of the outer transmission joint part 12, when the outer transmission joint part 12 does not move backward, the inner transmission joint part 11 is completely covered by the outer transmission joint part 12. Based on the above structure, when the inner transmission joint part 11 is made of elastic material, the area of the inner transmission joint part 11 exposed to the high-temperature environment can be reduced as much as possible, and the outer transmission joint part 12 can provide more complete protection and heat insulation for the inner transmission joint part 11, thereby better improving the problem that the elastic material is prone to aging and damage.

[0056] In another embodiment of the air blowing device, when the outer transmission joint part 12 is subjected to external force to overcome the elastic force of the elastic member 14 and move to the state of being connected with the outer receiving joint part 22 in the direction opposite to the air outlet direction of the transmission air duct 13, the inner transmission joint part 11 partially protrudes from the outer transmission joint part 12 on the side of the air outlet end of the transmission air duct 13; and when the outer transmission joint part 12 is not subjected to external force and does not move in the direction opposite to the air outlet direction of the transmission air duct 13, the inner transmission joint part 11 is located in the outer transmission joint part 12.

[0057] In other words, in the state where the outer transmission joint part 12 is connected with the outer receiving joint part 22, the inner transmission joint part 11 protrudes from the outer transmission joint part 12 on the side of the air outlet end of the transmission air duct 13; and in the initial state of the outer transmission joint part 12, the inner transmission joint part 11 does not protrude from the outer transmission joint part 12 on the side of the air outlet end of the transmission air duct 13, and the inner transmission joint part 11 is completely covered by the outer transmission joint part 12.

[0058] In this embodiment, when the transmission joint is connected with the receiving assembly 20, the outer transmission joint part 12 moves backward by a distance to expose the inner transmission joint part 11, and the exposed inner transmission joint part 11 is more convenient to connect with the inner receiving joint part 21. When air blowing is not needed, the outer transmission joint part 12 in the initial state completely covers the inner transmission joint part 11, and when the inner transmission joint part 11 is made of elastic material, the area of the inner transmission joint part 11 exposed to the high-temperature environment can be reduced as much as possible, and the outer transmission joint part 12 can provide more complete protection and heat insulation for the inner transmission joint part 11, thereby better improving the problem that the elastic material is prone to aging and damage.

[0059] In one embodiment of the air blowing device, as Figure 1 , Figure 2 and Figure 4As shown, the end of the inner receiving joint part 21 for connecting with the inner transmitting joint part 11 is convex outward; and the end of the inner transmitting joint part 11 for connecting with the inner receiving joint part 21 is flat or concave inward.

[0060] In this embodiment, in the case that the inner receiving joint part 21 has a convex outward structure, and the inner transmitting joint part 11 has a flat or concave inward structure, especially in the case that the inner receiving joint part 21 is made of rigid material, the inner transmitting joint part 11 is made of elastic material, and the inner receiving joint part 21 and the inner transmitting joint part 11 are both made of elastic material, when the inner transmitting joint part 11 and the inner receiving joint part 21 are connected, the convex outward structure of the inner receiving joint part 21 acts on the inner transmitting joint part 11, which will cause the inner transmitting joint part 11 to deform to both sides, thereby helping to achieve better sealing effect.

[0061] In one embodiment of the air blowing device, as shown in Figure 1 and Figure 2 As shown, the end of the outer transmitting joint part 12 for connecting with the outer receiving joint part 22 has a convex arc surface shape towards the outer receiving joint part 22; and the outer receiving joint part 22 has a concave arc surface shape matching with the outer transmitting joint part 12.

[0062] Specifically, the arc surface shape of the outer transmitting joint part 12 and the arc surface shape of the outer receiving joint part 22 can be a spherical surface (partially), i.e. each region of the arc surface shape points to the same point as the center of the sphere in the radial direction. Of course, the arc surface shape of the outer transmitting joint part 12 and the outer receiving joint part 22 can also be other non-spherical surfaces.

[0063] In this embodiment, the surfaces of the outer transmitting joint part 12 and the outer receiving joint part 22 for connecting with each other are set as arc surface shapes, on the one hand, by means of the arc surface shapes, the connection between the two can play a role of positioning, guiding, etc., thereby facilitating the connection, on the other hand, the non-planar connection between the two also helps to achieve better sealing effect.

[0064] Of course, in an alternative embodiment, the end of the outer receiving joint part 22 for connecting with the outer transmitting joint part 12 can also have a convex arc surface shape towards the outer transmitting joint part 12; and the outer transmitting joint part 12 can have a concave arc surface shape matching with the outer receiving joint part 22. This alternative embodiment can achieve the same beneficial effects as the above-mentioned embodiment, and will not be described again.

[0065] In one embodiment of the air blowing device, as shown in Figure 1As shown, the receiving assembly 20 is provided with a guide slope 24, which includes a first slope 241 on the outer side and a second slope 242 on the inner side. The slope angle of the first slope 241 (the angle of opening outwards relative to the air inlet direction of the receiving air channel 23, i.e. the angle represented by the included angle A in the figure) is greater than the slope angle of the second slope 242 (the angle of opening outwards relative to the air inlet direction of the receiving air channel 23, i.e. the angle represented by the included angle B in the figure). Figure 1 Figure 1

[0066] In this embodiment, the guide slope 24 can play a guiding role when the launching joint and the receiving assembly 20 are docked. Specifically, when the launching joint approaches the receiving assembly 20, the outer launching joint portion 12 can not be aligned with the outer receiving joint portion 22. If the outer launching joint portion 12 contacts the guide slope 24, the outer launching joint portion 12 will slide towards the outer receiving joint portion 22 and reach the outer receiving joint portion 22 under the action of the inclined slope of the guide slope 24 itself, and finally achieve alignment with the outer receiving joint portion 22.

[0067] ​​In this embodiment, the guide slope 24 has a first slope 241 and a second slope 242, both of which can play a guiding role in the docking process of the launch joint and the receiving assembly 20. However, they have different focuses in achieving the guiding role. For the first slope 241, it is located on the outer side and has a larger slope angle. Based on this structure, the role of the first slope 241 is to enable the guide slope to cover a larger area, so that no matter which direction the outer launch joint part 12 deviates from the outer receiving joint part 22 and how large the deviation is, the outer launch joint part 12 will probably touch the guide slope 24 and be guided to the outer receiving joint part 22. For the second slope 242, it is located on the inner side and abuts the outer receiving joint part 22, and has a smaller slope angle. Based on this structure, it can achieve the following two roles. First, when the outer launch joint part 12 deviates by a small amount, it will not touch the first slope 241 but will touch the second slope 242, at which time the outer launch joint part 12 is guided to slide to the outer receiving joint part 22. Second, when the outer launch joint part 12 deviates and touches the first slope 241, the outer launch joint part 12 will pass through the second slope 242 and finally slide to the outer receiving joint part 22 along the second slope 242 during the sliding process along the first slope 241. In this process, since the second slope 242 has a smaller slope angle, the lateral force received by the outer launch joint part 12 when it slides into the outer receiving joint part 22 from the second slope 242 is not easy to produce obvious lateral force and lateral movement when the outer launch joint part 12 and the outer receiving joint part 22 are docked. In this case, the wear between the outer launch joint part 12 and the outer receiving joint part 22 will be reduced, thereby helping to prolong the overall service life.

[0068] In one embodiment of the air blowing device, as shown in Figure 3 the air blowing device further comprises a tail seat assembly 30 connected with the launch assembly 10 through a quick release structure 40.

[0069] Specifically, the tail seat assembly 30 is also installed on a ladle car or a VD, VOD, RH furnace, etc. refining equipment with air blowing needs, or installed on a continuous casting rotary table. The tail seat assembly 30 can be fixedly arranged, and the launch assembly 10 and the tail seat assembly 30 are detachably connected. When needed, the launch assembly 10 can be detached from the tail seat assembly 30 and replaced.

[0070] Specifically, the tailstock assembly 30 can include a tailstock base plate 31, a spring 32 and a connecting pipe 33, wherein the tailstock base plate 31 is used to fix and mount other components. The spring 32 is used to provide buffering when the launching assembly 10 is disassembled and moved. One end of the connecting pipe 33 is used to connect with the gas source, and the other end is communicated with the pipe provided on the piston rod 151 of the air cylinder 15 of the launching assembly 10 for gas flow, so as to input the gas in the gas source into the air cylinder 15.

[0071] In this embodiment, the quick release structure 40 is used to connect between the tailstock assembly 30 and the launching assembly 10, so that the launching assembly 10 and the tailstock assembly 30 can be quickly mounted and disassembled.

[0072] In one embodiment of the air blowing device, as shown in Figure 7 and Figure 8 , the quick release structure 40 includes a first connecting piece 41 and a second connecting piece 42 arranged oppositely. The end of the first connecting piece 41 opposite to the second connecting piece 42 is provided with a claw 411 extending laterally; the claw 411 and the second connecting piece 42 can rotate relative to each other. The end of the second connecting piece 42 opposite to the first connecting piece 41 is provided with a limiting portion 421 and a notch 422 in the circumferential direction; the side of the limiting portion 421 away from the first connecting piece 41 is provided with a mounting space; the notch 422 is matched with the claw 411, so that the claw 411 can pass through the notch 422. One of the first connecting piece 41 and the second connecting piece 42 is arranged on the tailstock assembly 30, and the other is arranged on the launching assembly 10.

[0073] In this embodiment, taking the first connecting piece 41 arranged on the launching assembly 10 and the second connecting piece 42 arranged on the tailstock assembly 30 as an example, when the launching assembly 10 and the tailstock assembly 30 are mounted together, first, the launching assembly 10 and the tailstock assembly 30 are arranged opposite to each other for fixed connection (at this time, the directions of the two compared to each other are in the first direction), and the launching assembly 10 is adjusted to the state that the claw 411 corresponds to the notch 422; then, the launching assembly 10 and the first connecting piece 41 are controlled to move towards the tailstock assembly 30, in the process, the claw 411 passes through the notch 422 and reaches the mounting space behind the limiting portion 421; then, the launching assembly 10 and the first connecting piece 41 are controlled to rotate, so that the claw 411 and the notch 422 are circumferentially staggered and correspond to the limiting portion 421. At this time, a limiting relationship in the first direction is formed between the claw 411 and the limiting portion 421, based on which the launching assembly 10 is fixed with the tailstock assembly 30 and cannot be separated from the tailstock assembly 30 by movement in the first direction.

[0074] After the above steps, the first connecting member 41 and the second connecting member 42, or the launching assembly 10 and the tailstock assembly 30, can be locked at the angle state by a locking mechanism, so that the relative rotation between them does not occur accidentally, and the pawl 411 and the limiting portion 421 are not accidentally misaligned in the circumferential direction to release the limiting relationship. The locking mechanism described above can be a locking rod or other structure commonly used in the prior art in actual implementation, and will not be described again.

[0075] When disassembling the launching assembly 10 and the tailstock assembly 30, the specific process is roughly divided into two steps. First, control the launching assembly 10 and the first connecting member 41 to rotate to the state where the pawl 411 corresponds to the slot 422, at which time the pawl 411 and the limiting portion 421 are misaligned in the circumferential direction, and the limiting relationship between them is released. Then, control the launching assembly 10 and the first connecting member 41 to move in the first direction, so that the pawl 411 passes through the slot 422 from the installation space behind the limiting portion 421, and thus the first connecting member 41 and the second connecting member 42 are separated, and the launching assembly 10 is disassembled from the tailstock assembly 30.

[0076] In this embodiment, the first connecting member 41 can be a part of the launching assembly 10. In this case, the first connecting member 41 is an integral structure with the launching assembly 10 or a certain structural member in the launching assembly 10, for example, in combination with Figure 7 and Figure 2 The first connecting member 41 can be an integral structure with the piston rod 151 of the cylinder 15. Of course, in addition, the first connecting member 41 can be fixed on the launching assembly 10 by bolts or other connecting members.

[0077] The second connecting member 42 is similar to the first connecting member 41 and will not be described again.

[0078] To sum up, the air blowing device provided by the above-mentioned embodiment of the present application has a double-layer structure on the outer side of the emitting joint of the emitting assembly 10, which is respectively an inner emitting joint part 11 on the inner side and an outer emitting joint part 12 on the outer side; the receiving assembly 20 also has a corresponding double-layer structure on the outer side of the receiving air channel 23, which is respectively an inner receiving joint part 21 on the inner side and an outer receiving joint part 22 on the outer side. When the emitting joint of the emitting assembly 10 is connected with the receiving assembly 20, the gas outlet end of the emitting air channel 13 is communicated with the gas inlet end of the receiving air channel 23, and at the same time, a double seal is formed on the outer side of the emitting air channel 13 and the receiving air channel 23, which is respectively an inner side seal formed by the connection of the inner emitting joint part 11 and the inner receiving joint part 21, and an outer side seal formed by the connection of the outer emitting joint part 12 and the outer receiving joint part 22. The above-mentioned double seal helps to achieve better sealing effect. Moreover, during the process of connecting the emitting joint of the emitting assembly 10 with the receiving assembly 20 for air blowing, the outer emitting joint part 12 and the outer receiving joint part 22 on the outer side completely wrap the inner emitting joint part 11 and the inner receiving joint part 21 on the inner side after being connected, which can play a heat insulation role and protect the inner emitting joint part 11 and the inner receiving joint part 21. Therefore, the inner emitting joint part 11 and the inner receiving joint part 21 can be made of materials that are not resistant to high temperature but have better sealing performance, so that the inner side seal formed by the inner emitting joint part 11 and the inner receiving joint part 21 can take into account both sealing performance and durability, and better performance is achieved in both aspects.

[0079] In an embodiment of the present application, the emitting assembly is the emitting assembly in the air blowing device described in the above-mentioned embodiment. That is to say, in this embodiment, the emitting assembly has the same structure as the emitting assembly in the air blowing device of the above-mentioned embodiment, but the emitting assembly is a separate protection object.

[0080] It should be noted that in this embodiment, the emitting assembly is not limited to being applied in the above-mentioned air blowing device, and can also be applied in similar technical scenarios in the similar field or other technical fields to achieve double sealing on the inner side and the outer side, and good sealing performance is obtained by being extruded to deform on the inner side.

[0081] The emitting assembly in the embodiment of the present application is the same as the emitting assembly in the air blowing device of the above-mentioned embodiment, and the effects that can be achieved by the emitting assembly have been described in the above-mentioned embodiment of the air blowing device, and will not be repeated here.

[0082] In an embodiment of the present application, the emitting joint is the emitting joint in the air blowing device described in the above-mentioned embodiment.

[0083] The transmitting joint in the embodiment of the present application is the same as the transmitting joint in the blowing device in the above embodiment, and the effects that can be achieved by the transmitting joint have been described in the above embodiment of the blowing device, and will not be repeated here.

[0084] In one embodiment of the receiving assembly of the present application, the receiving assembly is the receiving assembly in the blowing device described in the above embodiment.

[0085] It should be noted that in this embodiment, the receiving assembly is not limited to be applied in the above blowing device, and can also be applied in similar technical scenarios in the similar field or other technical fields to achieve the double sealing on the inner side and the outer side, and good sealing performance is obtained on the inner side by being extruded to be deformed.

[0086] The receiving assembly in the embodiment of the present application is the same as the receiving assembly in the blowing device in the above embodiment, and the effects that can be achieved by the receiving assembly have been described in the above embodiment of the blowing device, and will not be repeated here.

[0087] It should be noted that in this document, relational terms such as“first” and“second”, and the like, are used solely to distinguish one entity or action from another entity or action, without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms“comprises”,“comprising”, or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element preceded by“comprises...” does not, without more limitations, foreclose the existence of additional identical elements in the process, method, article, or apparatus that includes the recited element.

[0088] The above description is merely one specific implementation of the present application, which enables those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A blowing device, characterized in that The blowing device includes a launching component (10) and a receiving component (20); The receiving assembly (20) includes an inner receiving connector (21) and an outer receiving connector (22); the inner receiving connector (21) and the outer receiving connector (22) are annular, and the outer receiving connector (22) is sleeved on the outside of the inner receiving connector (21); and the receiving assembly (20) forms a receiving air passage (23) on the inner side of the inner receiving connector (21), and the receiving air passage (23) has an air inlet end; The transmitting assembly (10) has a transmitting connector for docking with the receiving assembly (20); the transmitting connector includes an inner transmitting connector portion (11) and an outer transmitting connector portion (12); the inner transmitting connector portion (11) and the outer transmitting connector portion (12) are annular, and the outer transmitting connector portion (12) is sleeved on the outside of the inner transmitting connector portion (11); and the transmitting connector forms a transmitting air passage (13) on the inner side of the inner transmitting connector portion (11), the transmitting air passage (13) having an air outlet end; The transmitting component (10) and the receiving component (20) can be docked; when the transmitting component (10) and the receiving component (20) are docked, the air outlet of the transmitting air passage (13) and the air inlet of the receiving air passage (23) are connected, the inner transmitting connector (11) and the inner receiving connector (21) are connected to form an inner seal, and the outer transmitting connector (12) and the outer receiving connector (22) are connected to form an outer seal; The external launch connector (12) can move axially along the launch air passage (13); The launch connector also includes an elastic element (14), one end of which is fixed and the other end is connected to the outer launch connector portion (12); the elastic element (14) applies its own elastic force to the outer launch connector portion (12) so that the outer launch connector portion (12) tends to move toward the outlet end of the launch air passage (13).

2. The blowing device according to claim 1, characterized in that At least one of the inner transmitter connector (11) and the inner receiver connector (21) is made of an elastic material, and the outer transmitter connector (12) and the outer receiver connector (22) are made of a rigid material; The inner transmitter connector (11), inner receiver connector (21), outer transmitter connector (12), and outer receiver connector (22) are configured as follows: When the external transmitter connector (12) and the external receiver connector (22) are connected, the internal transmitter connector (11) and the internal receiver connector (21) are connected to each other, and the part made of elastic material at the connection point is deformed under pressure; so as to seal the connection point between the outlet end of the transmitter airway (13) and the inlet end of the receiver airway (23).

3. The air blowing device according to claim 2, characterized in that The inner transmitter connector (11) is made of an elastic material, and the inner receiver connector (21) is made of a rigid material.

4. The air blowing device according to claim 3, characterized in that In the side of the air outlet end of the emitting air channel (13), the inner emitting joint part (11) is located in the outer emitting joint part (12), or the inner emitting joint part (11) is flush with the outer emitting joint part (12).

5. The air blowing device according to claim 1, wherein In the side of the air outlet end of the emitting air channel (13), the inner emitting joint part (11) is located in the outer emitting joint part (12), or the inner emitting joint part (11) is flush with the outer emitting joint part (12).

6. The air blowing device according to claim 1, wherein In the side of the air outlet end of the emitting air channel (13), the inner emitting joint part (11) is located in the outer emitting joint part (12), or the inner emitting joint part (11) is flush with the outer emitting joint part (12). In the side of the air outlet end of the emitting air channel (13), the inner emitting joint part (11) is located in the outer emitting joint part (12), or the inner emitting joint part (11) is flush with the outer emitting joint part (12).

7. The blowing device according to claim 2 or 3, characterized in that The end of the inner receiving joint part (21) for connecting with the inner emitting joint part (11) is outwardly convex; The end of the inner emitting joint part (11) for connecting with the inner receiving joint part (21) is flush or inwardly concave.

8. The blowing device according to claim 2 or 3, characterized in that The end of the outer emitting joint part (12) for connecting with the outer receiving joint part (22) has an arc surface shape, which is convex towards the outer receiving joint part (22); the outer receiving joint part (22) has an arc surface shape which is concave-convex matching with the outer emitting joint part (12); or The end of the outer receiving joint part (22) for connecting with the outer emitting joint part (12) has an arc surface shape, which is convex towards the outer emitting joint part (12); the outer emitting joint part (12) has an arc surface shape which is concave-convex matching with the outer receiving joint part (22).

9. The air blowing device according to claim 1, wherein The receiving assembly (20) is provided with a guide slope surface (24), which includes a first slope surface (214) located on the outer side and a second slope surface (242) located on the inner side, and the slope angle of the first slope surface (241) is greater than that of the second slope surface (242).

10. The air blowing device according to claim 1, wherein The air blowing device further comprises a tail seat assembly (30) connected with the emitting assembly (10) through a quick release structure (40).

11. The air blowing device according to claim 10, characterized in that The quick release structure (40) comprises oppositely arranged first and second connecting members (41) and (42); The end of the first connecting member (41) for connecting with the second connecting member (42) is provided with a clamping claw (411) extending laterally; the clamping claw (411) and the second connecting member (42) can rotate relative to each other; The end of the second connecting piece (42) opposite to the first connecting piece (41) is provided with a limiting portion (421) and a notch (422) in the circumferential direction; the side of the limiting portion (421) away from the first connecting piece (41) is provided with a mounting space; the notch (422) is matched with the claw (411) so that the claw (411) can pass through the notch (422); One of the first connecting piece (41) and the second connecting piece (42) is arranged on the tail seat assembly (30), and the other is arranged on the launching assembly (10).

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