Automatic butt joint device for ladle argon blowing

Abstract

The utility model discloses a kind of ladle argon blowing automatic butt joint devices.At least include: cylinder, the cylinder includes cylinder body and the rod piston being set in cylinder body;The piston separates cylinder body into two parts of rod cavity and rodless cavity;Corresponding rodless cavity is provided with argon gas inlet on the cylinder body corresponding to cylinder cavity, and argon gas outlet is provided corresponding to cylinder cavity;Gas passage is set in the middle of piston rod;Gas outlet male joint (mouth) compatible with female joint is set in the free end of the piston rod;Pressing valve is set in the male joint;When male joint and female joint abut and reach predetermined pressure, pressing valve opens, and argon gas enters female joint in sequence through rodless cavity, gas passage and pressing valve.The utility model can reduce the impact force when falling ladle, can prevent sealing structure from being damaged, and service life is long.

Description

Technical Field

[0001] This utility model relates to an automatic argon blowing docking device for steel ladles. Background Technology

[0002] The main significance of argon blowing in steel ladles lies in optimizing the quality of molten steel through the action of argon gas, providing qualified steel billets for subsequent rolling or casting; argon blowing ensures the quality stability of steel and is an important link in improving the product qualification rate during the steelmaking process.

[0003] Currently, during the argon blowing process, the impact of the ladle during its descent can have various effects on the argon blowing joint, mainly including: 1) Mechanical damage: The impact force when the argon blowing connector (such as quick connector, connecting pipeline, seals, etc.) may be subjected to severe vibration or collision, causing the connector to loosen, deform, or even break at the interface, affecting the subsequent sealing performance.

[0004] 2) Sealing failure: Impact may damage the sealing structure of the joint (such as sealing rings, gaskets, etc.), resulting in argon leakage after docking, reducing argon blowing efficiency, and increasing gas consumption.

[0005] 3) Alignment deviation: Impact may cause the installation position of the argon blowing connector to shift, making it difficult to align accurately during subsequent docking, increasing the difficulty of docking, and even requiring readjustment to complete the connection, affecting work efficiency. Summary of the Invention

[0006] To overcome the above-mentioned defects, the purpose of this invention is to provide an automatic docking device for argon blowing into steel ladles.

[0007] To achieve the above objectives, the present invention provides an automatic ladle argon blowing docking device, which includes at least: a cylinder, wherein the cylinder includes a cylinder body and a rod piston disposed within the cylinder body; the piston divides the cylinder body into a rod chamber and a rodless chamber. An argon gas inlet is provided on the cylinder body corresponding to the cylinder without a cylinder cavity, and an argon gas outlet is provided corresponding to the cylinder cavity. An air passage is provided in the middle of the piston rod; A male outlet valve (nozzle) adapted to the female connector is provided at the free end of the piston rod; a press valve is provided inside the male connector; wherein, when the male connector abuts against the female connector and reaches a predetermined pressure, the press valve opens, and argon gas enters the female connector sequentially through the rodless chamber, the gas passage, and the press valve.

[0008] Furthermore, the male connector includes a base adapted to the piston rod, the base having a coaxially arranged vertical air intake passage and a horizontal air intake passage connected to the upper end of the vertical air intake passage; at least one end of the outlet of the horizontal air intake passage is located on the outer circumferential side wall of the base. A mushroom cap is provided on the base; a [missing information] is provided in the middle of the base and the mushroom cap; The mushroom cap has a hollow section inside, which includes, in sequence: The sealing section has a diameter that matches the outer diameter of the base. When the base is located in the sealing section, the transverse air intake is closed and the push valve is in a closed state. The air passage section has a diameter larger than that of the base or has an air passage provided on it; when the base is located in the air passage section, the horizontal air inlet is opened and the press valve is in the open state. The air outlet section is equipped with an air outlet that communicates with the air passage section; A spring is installed between the air outlet and the upper surface of the base.

[0009] Furthermore, a shock-absorbing device is provided at the bottom of the cylinder.

[0010] This invention employs a cylinder drive, which reduces the impact force during package dropping; a pressure valve is installed inside the male connector to prevent damage to the sealing structure. The female connector is flared to match the male connector, reducing the difficulty of docking. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the automatic argon blowing docking device for steel ladles according to this utility model.

[0012] Figure 2 for Figure 1 A schematic diagram of the structure of the middle cylinder.

[0013] Figure 3 for Figure 1 A schematic diagram of the structure of the male connector.

[0014] Figure 4 for Figure 1 A schematic diagram of the structure of the female connector.

[0015] Figure 5 The process of the docking device of this utility model Figure 1 .

[0016] Figure 6 The process of the docking device of this utility model Figure 2 .

[0017] Figure 7 The process of the docking device of this utility model Figure 3 .

[0018] Figure 8 The process of the docking device of this utility model Figure 4 . Detailed Implementation

[0019] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0020] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Example

[0023] like Figures 1 to 4 As shown, the present invention provides an automatic ladle argon blowing docking device, which includes at least: a cylinder 3, wherein the cylinder includes a cylinder body and a rod piston disposed in the cylinder body; the piston 31 divides the cylinder body into two parts: a rod chamber 33 and a rodless chamber 34. An argon gas inlet 35 is provided on the cylinder body corresponding to the cylinder without a cylinder cavity, and an argon gas outlet 36 is provided corresponding to the cylinder cavity. An air passage is provided in the middle of the piston rod 32; A male outlet connector 5 (nozzle) adapted to the female connector 6 is provided at the free end of the piston rod; a pressure valve is provided inside the male connector; wherein, when the male connector abuts against the female connector and reaches a predetermined pressure, the pressure valve opens, and argon gas sequentially enters the female connector through the rodless chamber, the gas passage, and the pressure valve. The form of the male connector can be designed according to needs, for example, it can adopt the structure of an American-style valve, that is, as long as it can allow gas to enter after being pressed by external force. Example

[0024] Based on Embodiment 1, the male connector includes: a base 52 adapted to the piston rod, wherein a vertical air intake is coaxially arranged in the base, and a horizontal air intake 53 is connected to the upper end of the vertical air intake; at least one end of the outlet of the horizontal air intake is arranged on the outer circumferential side wall of the base. A mushroom cap 51 is provided on the base; a [missing information] is provided in the middle of the base and the mushroom cap; The mushroom cap is provided with a hollow part 54, which includes, in sequence: The sealing section has a diameter that matches the outer diameter of the base. When the base is located in the sealing section, the transverse air intake is closed and the push valve is in a closed state. The air passage section has a diameter larger than that of the base or has an air passage provided on it; when the base is located in the air passage section, the horizontal air inlet is opened and the press valve is in the open state. The air outlet section is equipped with an air outlet that communicates with the air passage section; A spring is installed between the air outlet and the upper surface of the base. like Figure 3 As shown, when the mushroom cap is in its free state, it is at its highest position under the action of the spring. At this time, the air intake channel of the base is covered, and airflow cannot enter the mushroom cap. Therefore, the air outlet at the top of the mushroom cap cannot ventilate. When the mushroom cap is under pressure, it is at its lowest position under pressure. At this time, the air intake channel of the base is connected to the air passage of the mushroom cap, and airflow can enter the air outlet at the top of the mushroom cap through the air passage. Example

[0025] Based on the above embodiments, a shock-absorbing device 4 is provided at the bottom of the cylinder. Work process: Step 1, as follows Figure 5 As shown: 1) The steel ladle to be purged with argon is lifted by a crane to the argon purging station and placed on the upper platform; (Note: The female connector is installed on the steel ladle) 2) At this time: the cylinder inlet is not connected to the argon gas source; the cylinder piston rod is in the lowest position under the pressure of the gas tank; the male connector is in a free state; 3) At this time: the mushroom cap of the cylinder male connector and the female connector installed on the ladle are kept at a distance L and will not contact each other, so there is no impact during the ladle dropping process; Step two, as Figure 6 As shown: 1) Once the ladle is accurately positioned, the argon blowing process will begin. 2) Turn on the argon gas source and connect it to the cylinder inlet; 3) Argon gas enters the rodless chamber of the cylinder. At this time, both the rodless and rod chambers are pressurized. (Note: The gas tank is equipped with an automatic pressure relief valve to ensure that the pressure in the gas tank is slightly lower than the gas source pressure.) 4) Since the pressure in the rodless chamber is slightly greater than that in the rod chamber, and the effective area of ​​the rodless chamber is greater than that of the rod chamber, the piston rod extends automatically under the action of the pressure difference. 5) When the piston rod drives the mushroom cap of the male connector to extend into the ball surface of the female connector, the mushroom cap is under pressure. 6) After the mushroom cap is compressed, the argon gas flow is opened. The argon gas enters the mushroom cap gas chamber through the cylinder inlet, the cylinder rodless chamber, the cylinder piston rod inner hole, the mushroom cap top gas hole, and then enters the female connector gas hole. It then enters the ladle and is put into an argon-blowing state.

[0026] Step 3, as Figure 7 As shown: 1) After the ladle is purged with argon, the following process begins: 2) The argon gas source is shut off, and there is no pressure at the cylinder inlet and rod chamber; 3) The ladle is lifted away, the mushroom cap returns to its free state from the pressurized state, and the air circuit is closed; 4) The cylinder outlet is connected to the air tank. The pressure inside the air tank acts on the cylinder rod chamber, driving the piston rod to gradually retract.

[0027] Step four, as Figure 8 As shown: 1) The cylinder is fully retracted and returns to its original state, waiting for the next cycle.

[0028] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described above. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Many other changes and modifications made without departing from the concept and scope of the present invention should be considered within the scope of protection of the present invention.

[0029] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0030] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An automatic argon blowing docking device for steel ladles, characterized in that, At least including: A cylinder, comprising a cylinder body and a rod piston disposed within the cylinder body; the piston divides the cylinder body into a rod chamber and a rodless chamber. An argon gas inlet is provided on the cylinder body corresponding to the cylinder without a cylinder cavity, and an argon gas outlet is provided corresponding to the cylinder cavity. An air passage is provided in the middle of the piston rod; A male outlet connector adapted to the female connector is provided at the free end of the piston rod; a press valve is provided inside the male connector; wherein, when the male connector abuts against the female connector and reaches a predetermined pressure, the press valve opens, and argon gas enters the female connector sequentially through the rodless chamber, the gas passage, and the press valve.

2. The automatic argon blowing docking device for steel ladles as described in claim 1, characterized in that, The male connector includes a base adapted to the piston rod, and the base is provided with a vertical air intake passage arranged coaxially, and a horizontal air intake passage connected to the upper end of the vertical air intake passage; at least one end of the outlet of the horizontal air intake passage is provided on the outer circumferential side wall of the base. A mushroom cap is provided on the base; The base and the middle of the mushroom cap are provided with; The mushroom cap has a hollow section inside, which includes, in sequence: The sealing section has a diameter that matches the outer diameter of the base. When the base is located in the sealing section, the transverse air intake is closed and the push valve is in a closed state. The air passage section has a diameter larger than that of the base or has an air passage provided on it; when the base is located in the air passage section, the horizontal air inlet is opened and the press valve is in the open state. The air outlet section is equipped with an air outlet that communicates with the air passage section; A spring is installed between the air outlet and the upper surface of the base.

3. The automatic argon blowing docking device for steel ladles as described in claim 1, characterized in that, A shock-absorbing device is provided at the bottom of the cylinder.

4. The automatic argon blowing docking device for steel ladles as described in claim 1, characterized in that, The female connector is flared and adapted to the male connector.

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