Argon blowing device

Abstract

The invention relates to the technical field of iron and steel smelting equipment, in particular to an argon blowing device which comprises an air blowing pipe and an argon blowing device, the argon blowing device further comprises an argon blowing main body of which one end is connected with the pushing device; one end of the argon blowing rod body is rotationally connected with the argon blowing main body, and the argon blowing main body and the argon blowing rod body are combined with each other to form a sleeve used for wrapping a gas blowing pipe. According to the argon blowing device, the argon blowing main body and the argon blowing rod body are rotationally connected to form the sleeve wrapping the gas blowing pipe, and after the argon blowing rod body bends and deforms downwards, the downward bending part of the argon blowing rod body can rotate relative to the argon blowing main body to face upwards by rotating the argon blowing rod body; therefore, the bent part and the part, wrapped by the bent part, of the air blowing pipe can recover the state before deformation by means of gravity, and the required straightness requirement is met.

Description

Technical Field

[0001] The invention relates to the technical field of steel smelting equipment, and in particular to an argon blowing device. Background Art

[0002] In the process of steel smelting, there are many scenarios where argon needs to be blown into the ladle through an argon blowing device to protect the steel surface and improve the quality of steel smelting. The conventional method is to set a blowing pipe, one end of which is connected to the gas outlet end of the gas supply equipment. The blowing pipe is connected to a pushing device, and then the pushing device can be used to move the gas outlet end of the blowing pipe to the surface of the molten steel, and then the argon is sprayed through the blowing pipe by the gas supply equipment to blow argon into the molten steel.

[0003] The current technical problems are: Since the air pipe is long (generally more than 10 meters) and has a heavy weight, it is prone to local bending. In particular, the air pipe is usually used in continuous high temperature and harsh environment. The air pipe is easily softened by heat, further aggravating the bending of the air pipe and causing air leakage. Summary of the invention

[0004] In view of this, the object of the present invention is to provide an argon blowing device to solve the technical problem that the blowing pipe of the existing argon blowing device is easy to bend and deform due to its large length and high temperature in the use scene.

[0005] Based on the above purpose, the present invention provides an argon blowing device, comprising:

[0006] An air blowing pipe with one end connected to the air outlet of the air supply device;

[0007] The argon blowing device also includes:

[0008] An argon blowing body connected to a pushing device at one end;

[0009] An argon blowing rod body is rotatably connected to the argon blowing main body at one end, and the argon blowing main body and the argon blowing rod body are combined with each other to form a sleeve for wrapping the air blowing tube, the interior of the sleeve is hollow to form an inner cavity for placing the air blowing tube, and openings communicating with the inner cavity are respectively opened at both ends of the sleeve, so that the two ends of the air blowing tube can extend outward from the inner cavity through the openings, and the length of the argon blowing main body is smaller than the length of the argon blowing rod body, so that the center of gravity of the sleeve is biased to one side of the argon blowing rod body. When in use, the argon blowing rod body is rotated to make its bent part rotate relative to the argon blowing main body to change direction, so that the bent part and the part of the air blowing tube wrapped therein can restore the state before deformation with the help of gravity.

[0010] As a preferred technical solution of the present invention, the argon blowing main body is provided with a bearing shell at one end thereof close to the argon blowing rod body, and the argon blowing rod body is provided with a bearing inner ring matched with the bearing shell at one end thereof close to the argon blowing main body, and a docking surface is provided between the bearing inner ring and the bearing shell for being opposed to each other after the two are docked, and at least one group of grooves is provided on the docking surface, and a plurality of steel balls are arranged in the grooves.

[0011] As a preferred technical solution of the present invention, the bearing housing is provided with an oil seal groove on its butt surface, and a felt ring oil seal is arranged in the oil seal groove.

[0012] As a preferred technical solution of the present invention, a hole connected to the groove is opened on the surface of the bearing housing, and the steel ball can be filled into the groove through the hole. The hole is provided with a screw plug for sealing it.

[0013] As a preferred technical solution of the present invention, the cross section of the groove is semicircular.

[0014] As a preferred technical solution of the present invention, the argon blowing main body is provided with a mounting plate for connecting with a pushing device at one end thereof away from the argon blowing rod body.

[0015] As a preferred technical solution of the present invention, the argon blowing body is provided with a plurality of reinforcing ribs arranged in a ring shape along the axial direction thereof on its exterior, and a connecting plate for connecting the reinforcing ribs is provided on the exterior of the argon blowing body.

[0016] As a preferred technical solution of the present invention, a cooling circuit for receiving and discharging cooling liquid is arranged inside the sleeve, and a water inlet for inputting cooling liquid into the cooling circuit and a water outlet for discharging cooling liquid from the cooling circuit to the argon blowing body are arranged outside the argon blowing body.

[0017] As a preferred technical solution of the present invention, the sleeve is provided with an inner tube therein, and the inner tube is located between the inner wall of the sleeve and the air blowing pipe, one end of the inner tube is fixedly connected to one end inside the argon blowing body, and the other end of the inner tube is in conflict with one end inside the argon blowing rod body, thereby dividing the interior of the sleeve into two layers of chambers, the chamber close to the air blowing pipe is a cold water chamber, and the chamber close to the inner wall of the sleeve is a hot water chamber, the water inlet end and the water outlet end are both arranged on the surface of the argon blowing body, the water inlet end is connected to the cold water chamber, and the water outlet end is connected to the hot water chamber, and the inner tube is provided with a through groove for connecting the cold water chamber and the hot water chamber at its end.

[0018] As a preferred technical solution of the present invention, the water inlet end is provided with a first flange, and the water outlet end is provided with a second flange.

[0019] Beneficial effects of the present invention:

[0020] 1. The present invention forms a sleeve that wraps the gas blowing pipe by rotatably connecting the argon blowing body and the argon blowing rod body. When the argon blowing rod body is bent and deformed downward, the argon blowing rod body can be rotated to make the downward bending part rotate upward relative to the argon blowing body, so that the bending part and the gas blowing pipe wrapped by it can be restored to the state before deformation by gravity, so as to achieve the required straightness requirement;

[0021] 2. The present invention provides a cooling circuit inside the argon blowing body and the argon blowing rod body, so that cold water can be transported from the water inlet end outside the argon blowing body to the cooling circuit to cool the device. The cold water absorbs heat and is then discharged from the water outlet end, thereby alleviating the softening and aggravated bending of the argon blowing rod body in a continuously high-temperature working environment, thereby achieving the purpose of extending the service life of the argon blowing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the top view of the structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the front view half-section structure of the present invention;

[0027] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0028] Figure 6 For the present invention Figure 4 Enlarged structural diagram at B in the middle.

[0029] The markings in the figure are: 1. Argon blowing body; 2. Bearing shell; 3. Bearing inner ring; 4. Steel ball; 5. Screw plug; 6. Felt ring oil seal; 7. Argon blowing rod; 8. Blowing pipe; 9. First flange; 10. Second flange; 11. Hole; 12. Inner tube; 13. Through groove; 14. Connecting plate; 15. Reinforcement rib plate; 16. Mounting plate; 17. Oil seal groove; 18. Water inlet end; 19. Water outlet end. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0031] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, an argon blowing device comprises: an air blowing pipe 8 connected to the air outlet end of the air supply device at one end; the argon blowing device also comprises: an argon blowing body 1 connected to the pushing device at one end; an argon blowing rod body 7 rotatably connected to the argon blowing body 1 at one end, the argon blowing body 1 and the argon blowing rod body 7 are combined with each other to form a sleeve for wrapping the air blowing pipe 8, the interior of the sleeve is hollow to form an inner cavity for placing the air blowing pipe 8, and openings communicating with the inner cavity are respectively opened at both ends of the sleeve, so that the two ends of the air blowing pipe 8 can extend outward from the inner cavity through the openings, the length of the argon blowing body 1 is smaller than the length of the argon blowing rod body 7, so that the center of gravity of the sleeve is biased to one side of the argon blowing rod body 7, and when in use, the argon blowing rod body 7 is rotated to rotate the bent part relative to the argon blowing body 1 to change the direction, so that the bent part and the part of the air blowing pipe 8 wrapped therein can be restored to the state before deformation by gravity;

[0033] The above technical solution can be used to rotate and correct the argon blowing rod body 7 after it is bent. When in use, since the length of the argon blowing rod body 7 is much longer than the length of the argon blowing main body 1, the length ratio of the two is 1:10, so that the overall center of gravity of the sleeve is biased toward one side of the argon blowing rod body 7. Since the argon blowing main body 1 itself is relatively short and directly connected to the pushing device, the argon blowing main body 1 generally does not bend. After a period of use, the argon blowing rod body 7 will bend and deform downward due to the large dead weight brought by its long length and high temperature softening. At this time, the argon blowing rod body 7 is rotated to rotate the bent part relative to the argon blowing main body 1 to change the direction, that is, the part originally bent downward is adjusted to be vertically upward, so that the bent part and the part of the blowing pipe 8 wrapped therein can be restored to the state before deformation with the help of gravity, so as to achieve the required straightness requirement.

[0034] like Figure 4 and Figure 5 As shown, in this embodiment, the argon blowing body 1 is provided with a bearing housing 2 at one end thereof close to the argon blowing rod body 7, and the argon blowing rod body 7 is provided with a bearing inner ring 3 matched with the bearing housing 2 at one end thereof close to the argon blowing body 1, and a butt joint surface for opposing each other after the two are butted is provided between the bearing inner ring 3 and the bearing housing 2, and at least one group of grooves is provided on the butt joint surface, and a plurality of steel balls 4 are provided in the grooves; preferably, the cross section of the groove is semicircular, and there are two groups of grooves;

[0035] The above technical solution can realize rotational connection between the argon blowing body 1 and the argon blowing rod body 7 through a bearing. The steel ball 4 can reduce the friction resistance during relative movement between the bearing housing 2 and the bearing inner ring 3, reduce the wear between the components, and thus help to improve the overall service life of the device.

[0036] like Figure 1 and Figure 3 As shown, in this embodiment, a hole 11 connected to the groove is opened on the surface of the bearing housing 2, and the steel ball 4 can be filled into the groove through the hole 11. The hole 11 is provided with a screw plug 5 for sealing it;

[0037] By adopting the above technical solution, the steel ball 4 can be transferred from the bearing housing 2 into the groove, and the bearing housing 2 and the bearing inner ring 3 can be disassembled conveniently, so that the argon blowing body 1 and the argon blowing rod body 7 can be separated. During disassembly, the screw plug 5 is first turned to remove it from the hole 11 on the surface of the bearing housing 2, and then the steel ball 4 located in the grooves of the bearing housing 2 and the bearing inner ring 3 is taken out through the hole 11, thereby releasing the limit of the bearing housing 2 and the bearing inner ring 3, so that the two can be separated.

[0038] like Figure 3 As shown, in this embodiment, the argon blowing body 1 is provided with a mounting plate 16 for connecting a pushing device at one end thereof away from the argon blowing rod body 7;

[0039] The above technical solution can be used to fix the argon blowing body 1 and the pushing device. The connection can be made by bolt connection or other similar detachable connection methods.

[0040] like Figure 3 and Figure 4 As shown, in this embodiment, the argon blowing body 1 is provided with a plurality of reinforcing ribs 15 arranged in a ring shape along the axis direction thereof on its outside, and a connecting plate 14 for connecting the reinforcing ribs 15 is provided on the outside of the argon blowing body 1;

[0041] The above technical solution can further improve the bending resistance of the argon blowing body 1. By arranging a reinforcing rib plate 15 and a connecting plate 14 on the surface of the argon blowing body 1, the bending resistance of the argon blowing body 1 can be improved, and the argon blowing body 1 can be prevented from being synchronously bent due to the heavy weight of the argon blowing rod body 7, thereby improving the overall rigidity of the casing.

[0042] like Figure 3 and Figure 4 As shown, in this embodiment, a cooling circuit for receiving and discharging cooling liquid is provided inside the sleeve, and a water inlet 18 for inputting cooling liquid into the cooling circuit and a water outlet 19 for discharging cooling liquid from the cooling circuit out of the argon blowing main body 1 are provided outside the argon blowing main body 1;

[0043] The above technical solution can be used to cool the casing. As mentioned above, the factors that cause the argon blowing rod body 7 to bend downward mainly include two aspects. On the one hand, the argon blowing rod body 7 itself is relatively long, and only one end of it is fixed to the argon blowing main body 1. The other end of the argon blowing rod body 7 cannot be fixed because it needs to be aligned with the molten steel, which makes the argon blowing rod body 7 easy to bend downward in this section. On the other hand, the continuous high temperature environment causes the argon blowing rod body 7 to soften, aggravating the bending of the argon blowing rod body 7. Therefore, in order to reduce the bending of the argon blowing rod body 7, it is necessary to cool the casing. When in use, cold water is injected into the casing through the water inlet end 18, and the cold water can be used to absorb the temperature of the casing surface to prevent the casing from being softened by heat. The cold water absorbs heat and becomes hot water, and the hot water is discharged from the casing through the water outlet end 19.

[0044] like Figure 5 and Figure 6As shown, in this embodiment, the sleeve is provided with an inner tube 12 therein, and the inner tube 12 is located between the inner wall of the sleeve and the air blowing pipe 8, one end of the inner tube 12 is fixedly connected to one end inside the argon blowing main body 1, and the other end of the inner tube 12 is in conflict with one end inside the argon blowing rod body 7, thereby dividing the interior of the sleeve into two layers of chambers, the chamber close to the air blowing pipe 8 is a cold water chamber, and the chamber close to the inner wall of the sleeve is a hot water chamber, the water inlet end 18 and the water outlet end 19 are both arranged on the surface of the argon blowing main body 1, the water inlet end 18 is connected to the cold water chamber, and the water outlet end 19 is connected to the hot water chamber, and the inner tube 12 is provided with a through groove 13 at its end for connecting the cold water chamber and the hot water chamber;

[0045] The above technical solution enables water to flow between the argon blowing body 1, the inner wall of the argon blowing rod body 7 and the outer wall of the blowing pipe 8, thereby taking away heat. At the same time, the cold water can also cool the bearing housing 2, the bearing inner ring 3 and the steel ball 4, thereby extending the service life. When in use, the cold water enters the cold water chamber between the inner wall of the inner tube 12 and the outer wall of the blowing pipe 8 from the water inlet end 18, and then flows into the hot water chamber between the outer wall of the inner tube 12 and the inner wall of the argon blowing body 1 and the argon blowing rod body 7 through the through groove 13 at the end of the inner tube 12, and then is discharged through the water outlet end 19, thereby realizing the cooling of the argon blowing device. The blowing pipe 8 can be made of copper, which has a good heat dissipation effect.

[0046] like Figure 5 As shown, in this embodiment, the bearing housing 2 is provided with an oil seal groove 17 on its butt joint surface, and a felt ring oil seal 6 is provided in the oil seal groove 17;

[0047] The above technical solution can effectively improve the sealing between the bearing housing 2 and the bearing inner ring 3, prevent water from leaking out from the gap between the bearing housing 2 and the bearing inner ring 3, and enable the argon blowing body 1 and the argon blowing rod body 7 to maintain rotation without leakage.

[0048] like Figure 2 and Figure 3 As shown, in this embodiment, the water inlet end 18 is provided with a first flange 9, and the water outlet end 19 is provided with a second flange 10;

[0049] By adopting the above technical solution, the water inlet end 18 can be connected to the output end of the water supply equipment by means of flange bolts, and the water outlet end 19 can be connected to the drain pipe by means of flange bolts. Both are detachable connections, which are convenient for disassembly and maintenance.

[0050] Working principle: When in use, after the argon blowing rod body 7 is bent and deformed downward, the argon blowing rod body 7 is rotated so that the inner ring 3 of the bearing at one end thereof cooperates with the steel ball 4 to rotate in the bearing housing 2, so that the bent portion of the argon blowing rod body 7 is rotated relative to the argon blowing body 1 to change direction, that is, the originally bent portion is adjusted to be vertically upward, so that the bent portion and the air blowing pipe 8 wrapped therein can be restored to the state before deformation by gravity, so as to achieve the required straightness requirement;

[0051] In order to alleviate the softening and aggravated bending of the argon blowing rod body 7 under a continuously high-temperature working environment, cold water can also be sent from the water inlet end 18 into the cold water chamber between the inner wall of the inner tube 12 and the outer wall of the air blowing pipe 8, and then flow into the hot water chamber between the outer wall of the inner tube 12 and the inner walls of the argon blowing main body 1 and the argon blowing rod body 7 through the through groove 13 at the end of the inner tube 12, and then be discharged through the water outlet end 19, thereby achieving cooling of the argon blowing device. The air blowing pipe 8 can be made of copper, which has a good heat dissipation effect, thereby eliminating the factors that cause the argon blowing rod body 7 to bend downward. At the same time, cooling the argon blowing device can also extend its service life.

[0052] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0053] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An argon blowing device, comprising: An air blowing pipe (8) having one end connected to the air outlet of the air supply device; Characterized in that the argon blowing device also includes: An argon blowing body (1) connected to a pushing device at one end; An argon blowing rod body (7) is rotatably connected to the argon blowing main body (1) at one end. The argon blowing main body (1) and the argon blowing rod body (7) are combined to form a sleeve for wrapping a gas blowing pipe (8). The sleeve is hollow inside to form an inner cavity for accommodating the gas blowing pipe (8). Openings communicating with the inner cavity are respectively provided at both ends of the sleeve, so that both ends of the gas blowing pipe (8) can extend outward from the inner cavity through the openings. The length of the argon blowing main body (1) is shorter than that of the argon blowing rod body (7), so that the center of gravity of the sleeve is biased toward one side of the argon blowing rod body (7). When in use, the argon blowing rod body (7) is rotated to rotate its bent portion relative to the argon blowing main body (1) to change direction, so that the bent portion and the gas blowing pipe (8) wrapped therein can be restored to a state before deformation by gravity.

2. The argon blowing device according to claim 1, characterized in that: The argon blowing body (1) is provided with a bearing shell (2) at one end thereof close to the argon blowing rod body (7), and the argon blowing rod body (7) is provided with a bearing inner ring (3) matched with the bearing shell (2) at one end thereof close to the argon blowing body (1), and a butt joint surface for opposing each other after the two are butt jointed is provided between the bearing inner ring (3) and the bearing shell (2), and at least one group of grooves is provided on the butt joint surface, and a plurality of steel balls (4) are provided in the grooves.

3. The argon blowing device according to claim 2, characterized in that: The bearing housing (2) is provided with an oil seal groove (17) on its butt joint surface, and a felt ring oil seal (6) is arranged in the oil seal groove (17).

4. The argon blowing device according to claim 3, characterized in that: The surface of the bearing housing (2) is provided with a hole (11) connected to the groove, through which the steel ball (4) can be loaded into the groove, and the hole (11) is provided with a screw plug (5) for sealing it.

5. The argon blowing device according to claim 4, characterized in that: The cross section of the groove is semicircular.

6. The argon blowing device according to claim 1, characterized in that: The argon blowing main body (1) is provided with a mounting plate (16) for connecting with a pushing device at one end thereof away from the argon blowing rod body (7).

7. The argon blowing device according to claim 1, characterized in that: The argon blowing body (1) is provided with a plurality of reinforcing ribs (15) arranged in a ring shape along the axial direction thereof on its exterior, and a connecting plate (14) for connecting the reinforcing ribs (15) is provided on the exterior of the argon blowing body (1).

8. The argon blowing device according to any one of claims 1 to 7, characterized in that: A cooling circuit for receiving and discharging cooling liquid is arranged inside the sleeve, and a water inlet (18) for inputting cooling liquid into the cooling circuit and a water outlet (19) for discharging cooling liquid from the cooling circuit out of the argon blowing body (1) are arranged outside the argon blowing body (1).

9. The argon blowing device according to claim 8, characterized in that: The sleeve is provided with an inner tube (12) therein, the inner tube (12) being located between the inner wall of the sleeve and the air blowing pipe (8), one end of the inner tube (12) being fixedly connected to one end inside the argon blowing body (1), and the other end of the inner tube (12) being in contact with one end inside the argon blowing rod body (7), thereby dividing the interior of the sleeve into two chambers, the chamber close to the air blowing pipe (8) being a cold water chamber, and the chamber close to the inner wall of the sleeve being a hot water chamber, the water inlet end (18) and the water outlet end (19) being both arranged on the surface of the argon blowing body (1), the water inlet end (18) being connected to the cold water chamber, and the water outlet end (19) being connected to the hot water chamber, and the inner tube (12) being provided with a through groove (13) at its end for connecting the cold water chamber and the hot water chamber.

10. The argon blowing device according to claim 9, characterized in that: The water inlet end (18) is provided with a first flange (9), and the water outlet end (19) is provided with a second flange (10).

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