Vacuum injection top lance device for ultra-pure cast steel

Abstract

The utility model is applicable to the technical field of ultra-pure cast steel, and provides a vacuum injection top lance device for ultra-pure cast steel, which comprises an injection top lance, the air inlet end of the injection top lance is fixedly connected with an air inlet pipe, the bottom of the injection top lance is provided with a feed port, the bottom of the feed port is connected with a feed head, and the feed head is connected with an air inlet pipe. The discharging end of the blowing top gun is fixedly connected with a connecting seat assembly; through the arrangement of the connecting base assembly and the cooperative use of the connecting base assembly and the pushing assembly, the base body is installed on the reaction furnace body, the feeding port of the base body is plugged through the plug, and when gas needing to react is blown into the furnace body, the position of the injection top gun is adjusted by controlling the hydraulic cylinder and the pushing assembly, and the plug on the base body is opened, so that the reaction is completed. The discharging end of the injection top gun is inserted into the inserting groove, under the action of the spring, after the annular wedging groove and the abutting bead are connected in a clamped mode, preliminary butt joint is completed, the small motor is started and controlled to drive the clamping frame to rotate, and therefore the clamping frame is tightly connected with the outer wall of the discharging end of the injection top gun in a clamped mode.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultrapure cast steel, in particular to a vacuum blowing top gun device for ultrapure cast steel. Background Art

[0002] Cast steel refers to a metal material specifically used to manufacture steel castings. It should be used when the strength requirements for the castings are high and cast iron cannot meet the requirements. However, the molten steel of cast steel is not as fluid as cast iron, so the thickness of the cast structure should not be too small, and the shape should not be too complex. Controlling the silicon content to the upper limit can improve the fluidity of the molten steel. Cast steel can be divided into general engineering cast steel, welded structure cast steel, stainless steel cast steel, and heat-resistant steel cast steel according to its type and application. The processing and manufacturing of ultra-pure cast steel requires melting raw materials such as molten iron, scrap steel, and ferroalloys in melting furnaces such as blast furnaces, medium-frequency furnaces, or converters for subsequent casting. During the melting process, the raw materials need to be processed to achieve the required cast steel stock solution. A vacuum injection top lance is generally used to blow in the required reactive gas mixture. However, when connecting to the furnace body, the large size of the furnace body, the high installation position, and the high ambient temperature make the connection operation more difficult.

[0003] In order to avoid the above problems, it is necessary to design a vacuum blowing top gun device for ultrapure cast steel that is easy to connect and install. Utility Model Content

[0004] The utility model provides a vacuum blowing top gun device for ultrapure cast steel, which aims to solve the problem that in the processing and manufacturing of ultrapure cast steel, raw materials such as molten iron, scrap steel, and ferroalloys need to be smelted through melting furnaces such as blast furnaces, medium frequency furnaces or converters for subsequent casting processing. The raw materials need to be processed during smelting to obtain the required cast steel stock liquid. Generally, a vacuum blowing top gun is used to blow in the gas mixture that needs to react. However, when it is installed and connected with the furnace body, the connection operation is relatively difficult because the furnace body is large in size and installed at a high position, and the ambient temperature is high.

[0005] The utility model is implemented as follows: a vacuum blowing top gun device for ultrapure cast steel includes a blowing top gun: an air inlet end of the blowing top gun is fixedly connected to an air inlet pipe, a feed port is opened at the bottom of the blowing top gun, a feed head is connected to the bottom of the feed port, a connecting seat assembly is fixedly connected to the discharge end of the blowing top gun, an annular bracket is provided at the bottom of the blowing top gun, a hydraulic cylinder is provided at the bottom of the annular bracket, and a chassis is fixedly connected to the bottom of the hydraulic cylinder;

[0006] In which, the connecting seat assembly includes a seat body, the inner wall of the feed end of the seat body is provided with a slot, the inner wall of the seat body is provided with a built-in annular groove, the inner wall of the built-in annular groove is provided with several springs, one end of the built-in annular groove is fixedly connected with a bead, the outer wall of the discharge end of the blowing top gun is provided with an annular fitting groove, and the inner wall of the annular fitting groove is clamped with the outer wall of the bead.

[0007] Preferably, several small supports are fixedly connected to the outer wall edge of the feed end of the seat body, a small motor is fixedly connected to the outer wall of the small support, the output shaft of the small motor is fixedly connected to a rotating rod through a coupling, and a bracket is fixedly connected to the outer wall of one end of the rotating rod.

[0008] Preferably, the bracket includes two angle brackets that slide against each other, and the two angle brackets are slidably connected via a sleeve bracket, and the sleeve bracket and the angle bracket are fixedly connected via a screw handle.

[0009] Preferably, the outer wall of the rotating rod is fixedly connected to the inner wall of the angle bracket, and the inner wall of the angle bracket away from the rotating rod is fixedly connected with an anti-slip pad, and the inner wall of the anti-slip pad fits tightly with the outer wall of the discharge port.

[0010] Preferably, a plurality of mounting holes are provided on one side of the connection between the base body and the furnace mouth, and an annular heat dissipation groove is provided on the outer wall of one side of the connection between the base body and the furnace mouth.

[0011] Preferably, the outer wall of the feed head is sleeved with a pushing assembly, and the pushing assembly includes a sleeve disc and a lower vertical plate. The bottom of the sleeve disc is fixedly connected to the upper vertical plate, the outer wall of the lower vertical plate is fixedly connected to a hydraulic rod, and one end of the hydraulic rod is fixedly connected to a pushing plate, and the outer wall of the pushing plate is fit-fitted to the outer wall of the upper vertical plate.

[0012] Preferably, a plurality of fixing holes are provided on the bottom of the chassis, and the outer wall of the chassis is fixedly connected to the bottom of the lower vertical plate.

[0013] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0014] By setting up the connection seat assembly and cooperating with the pushing assembly, during use, the seat body is installed on the reaction furnace body, and the seat body feed port is blocked by a plug. When the gas to be reacted is blown into the furnace body, the position of the spray gun is adjusted by controlling the use of the hydraulic cylinder and the pushing assembly, and the plug on the seat body is opened, and the discharge end of the spray gun is inserted into the slot. Under the action of the spring, the annular fitting groove and the bead are connected to complete the preliminary docking, and the small motor is started and controlled to drive the bracket to rotate, thereby realizing the bracket It is tightly clamped with the outer wall of the discharge end of the blowing top gun and is fixed from the outside of the discharge end of the blowing top gun. After high-pressure gas is sprayed into the blowing top gun through the air inlet pipe, it is sprayed out at high speed to generate low pressure. The added gas passes through the feed head and then through the feed port and finally enters the blowing top gun. After the added gas is sucked into the blowing top gun, it is mixed in the spherical mixing chamber in the blowing top gun. After passing through the expansion tube, the kinetic energy is converted into pressure energy and sprayed into the furnace body. It is easy to install and connect, has high safety performance, improves the use effect of the device, and provides convenience for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the main view of the utility model;

[0016] Figure 2 This is a schematic diagram of the external structure of the connecting seat assembly of the utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the connecting seat assembly of the utility model;

[0018] Figure 4 It is a structural diagram of the push component of the utility model.

[0019] In the figure: 1. Chassis; 2. Connecting seat assembly; 201. Seat body; 202. Bracket; 203. Small motor; 204. Slot; 205. Arrest bead; 206. Spring; 3. Pushing assembly; 301. Sleeve plate; 302. Upper vertical plate; 303. Hydraulic rod; 304. Lower vertical plate; 4. Blowing top gun; 5. Hydraulic cylinder; 6. Inlet pipe; 7. Feed head. DETAILED DESCRIPTION

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0021] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] The present invention provides a vacuum blowing top gun device for ultrapure cast steel. Figure 1-4 As shown, it includes a blowing top gun 4: the air inlet end of the blowing top gun 4 is fixedly connected to the air inlet pipe 6, the bottom of the blowing top gun 4 is provided with a feed port, the bottom of the feed port is connected to a feed head 7, the discharge end of the blowing top gun 4 is fixedly connected to a connecting seat assembly 2, the bottom of the blowing top gun 4 is provided with an annular bracket, the bottom of the annular bracket is provided with a hydraulic cylinder 5, and the bottom of the hydraulic cylinder 5 is fixedly connected to a chassis 1;

[0023] The connecting seat assembly 2 includes a seat body 201, a slot 204 is provided on the inner wall of the feed end of the seat body 201, a built-in annular groove is provided on the inner wall of the built-in annular groove, a plurality of springs 206 are arranged in a ring array on the inner wall of the built-in annular groove, and a bead 205 is fixedly connected to one end of the built-in annular groove. The outer wall of the discharge end of the blowing top gun 4 is provided with an annular fitting groove, and the inner wall of the annular fitting groove is engaged with the outer wall of the bead 205;

[0024] Several small supports are fixedly connected to the outer wall edge of the feed end of the seat body 201, and a small motor 203 is fixedly connected to the outer wall of the small support. The output shaft of the small motor 203 is fixedly connected to a rotating rod through a coupling, and a bracket 202 is fixedly connected to the outer wall of one end of the rotating rod;

[0025] The bracket 202 includes two angle brackets that slide against each other, and the two angle brackets are slidably connected by a sleeve, and the sleeve and the angle brackets are fixedly connected by a screw handle;

[0026] The outer wall of the rotating rod is fixedly connected to the inner wall of the angle frame, and the inner wall of the angle frame away from the rotating rod is fixedly connected with an anti-skid pad, and the inner wall of the anti-skid pad is tightly fitted with the outer wall of the discharge port.

[0027] It should be noted that in the processing and manufacturing of ultra-pure cast steel, it is necessary to use melting furnaces such as blast furnaces, medium-frequency furnaces or converters to smelt raw materials such as molten iron, scrap steel, and ferroalloys for subsequent casting processing. The raw materials need to be processed during smelting to achieve the required cast steel liquid. Generally, a vacuum blowing top gun is used to blow in the gas mixture that needs to react. However, when installing and connecting with the furnace body, the connection operation is more difficult because the furnace body is large in size, the installation position is high, and the ambient temperature is high.

[0028] Specifically, in this embodiment, this solution is mainly used in conjunction with the setting of the connecting seat assembly 2 and the pushing assembly 3. During use, the seat body 201 is installed on the reaction furnace body, and the feed port of the seat body 201 is blocked by a plug. When the gas to be reacted is blown into the furnace body, the position of the blowing top gun 4 is adjusted by controlling the use of the hydraulic cylinder 5 and the pushing assembly 3, and the plug on the seat body 201 is opened, and the discharge end of the blowing top gun 4 is inserted into the slot 204. Under the action of the spring 206, the annular fitting groove and the bead 205 are engaged to complete the preliminary docking, and the small motor 203 is started and controlled. To drive the bracket 202 to rotate, so as to achieve a tight connection between the bracket 202 and the outer wall of the discharge end of the blowing top gun 4, and fix it from the outside of the discharge end of the blowing top gun 4. After high-pressure gas is sprayed into the blowing top gun 4 through the air inlet pipe 6, it is sprayed out at high speed to generate low pressure. The added gas passes through the feed head 7 and then through the feed port and finally enters the blowing top gun 4. After the added gas is sucked into the blowing top gun 4, it is mixed in the spherical mixing chamber in the blowing top gun 4. After passing through the expansion tube, the kinetic energy is converted into pressure energy and sprayed into the furnace body. The installation and connection are convenient, the safety performance is high, the use effect of the device is improved, and convenience is provided for the user.

[0029] In a further preferred embodiment of the present invention, Figure 1-4 As shown, a plurality of mounting holes are provided on one side of the connection between the base body 201 and the furnace opening, and an annular heat dissipation groove is provided on the outer wall of one side of the connection between the base body 201 and the furnace opening.

[0030] In this embodiment, by providing an annular heat dissipation groove on one side of the outer wall where the base body 201 is connected to the furnace mouth, a better heat dissipation protection effect can be achieved for the small motor 203.

[0031] In a further preferred embodiment of the present invention, Figure 1-4 As shown, the outer wall of the feed head 7 is sleeved with a pushing assembly 3, which includes a sleeve disc 301 and a lower vertical plate 304. The bottom of the sleeve disc 301 is fixedly connected to the upper vertical plate 302, and the outer wall of the lower vertical plate 304 is fixedly connected to a hydraulic rod 303. One end of the hydraulic rod 303 is fixedly connected to a pushing disc, and the outer wall of the pushing disc is in close contact with the outer wall of the upper vertical plate 302.

[0032] Several fixing holes are provided at the bottom of the chassis 1 , and the outer wall of the chassis 1 is fixedly connected to the bottom of the lower vertical plate 304 .

[0033] In this embodiment, by setting up the pushing component 3 and cooperating with the hydraulic cylinder 5, the hydraulic cylinder 5 is used to longitudinally raise and lower the use connection height of the blowing top gun 4, and the hydraulic rod 303 is started and controlled to move the position of the blowing top gun 4, thereby achieving the purpose of operating the connection of the blowing top gun 4, improving the use effect of the device, and providing convenience for the user.

[0034] It should be noted that for the aforementioned embodiments, for simplicity of description, they are all expressed as a series of action combinations. However, those skilled in the art should be aware that the present invention is not limited by the order of the actions described, because according to the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0035] In the several embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative, such as the division of the above-mentioned units. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the coupling or communication connection between each other shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0036] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope to be protected by the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making any creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope to be protected by the present invention.

Claims

1. A vacuum blowing top gun device for ultrapure cast steel, characterized in that: The invention comprises a blowing top gun (4): an air inlet end of the blowing top gun (4) is fixedly connected to an air inlet pipe (6), a feed port is provided at the bottom of the blowing top gun (4), a feed head (7) is connected at the bottom of the feed port, a connecting seat assembly (2) is fixedly connected at the discharge end of the blowing top gun (4), an annular bracket is provided at the bottom of the blowing top gun (4), a hydraulic cylinder (5) is provided at the bottom of the annular bracket, and a chassis (1) is fixedly connected at the bottom of the hydraulic cylinder (5); Wherein, the connecting seat assembly (2) includes a seat body (201), the inner wall of the feed end of the seat body (201) is provided with a slot (204), the inner wall of the seat body (201) is provided with a built-in annular groove, the inner wall of the built-in annular groove is provided with a plurality of springs (206) arranged in a ring, one end of the built-in annular groove is fixedly connected with a bead (205), the outer wall of the discharge end of the blowing top gun (4) is provided with an annular fitting groove, and the inner wall of the annular fitting groove is engaged with the outer wall of the bead (205).

2. A vacuum top lance device for ultrapure cast steel according to claim 1, characterized in that: Several small supports are fixedly connected to the outer wall edge of the feed end of the seat body (201), a small motor (203) is fixedly connected to the outer wall of the small support, the output shaft of the small motor (203) is fixedly connected to a rotating rod through a coupling, and the outer wall of one end of the rotating rod is fixedly connected to a bracket (202).

3. A vacuum top lance device for ultrapure cast steel according to claim 2, characterized in that: The clamping frame (202) comprises two angle frames that slide against each other, and the two angle frames are slidably connected via a sleeve frame, and the sleeve frame and the angle frames are fixedly connected via a screw handle.

4. A vacuum top lance device for ultrapure cast steel according to claim 3, characterized in that: The outer wall of the rotating rod is fixedly connected to the inner wall of the angle frame, and the inner wall of the angle frame away from the rotating rod is fixedly connected with an anti-slip pad, and the inner wall of the anti-slip pad is tightly fitted with the outer wall of the discharge port.

5. The vacuum top lance device for ultrapure cast steel according to claim 1, characterized in that: A plurality of mounting holes are provided on one side of the connection between the base body (201) and the furnace opening, and an annular heat dissipation groove is provided on the outer wall of one side of the connection between the base body (201) and the furnace opening.

6. The vacuum top lance device for ultrapure cast steel according to claim 1, characterized in that: The outer wall of the feed head (7) is sleeved with a pushing assembly (3), and the pushing assembly (3) comprises a sleeve disc (301) and a lower vertical plate (304). The bottom of the sleeve disc (301) is fixedly connected to the upper vertical plate (302), and the outer wall of the lower vertical plate (304) is fixedly connected to a hydraulic rod (303). One end of the hydraulic rod (303) is fixedly connected to a pushing disc, and the outer wall of the pushing disc is in close contact with the outer wall of the upper vertical plate (302).

7. The vacuum top lance device for ultrapure cast steel according to claim 1, characterized in that: The bottom of the chassis (1) is provided with a plurality of fixing holes, and the outer wall of the chassis (1) is fixedly connected to the bottom of the lower vertical plate (304).

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