An electronic scale for a steel ladle with an argon supply and sealing device

Abstract

The invention discloses an electronic scale for a ladle with an argon supply sealing device, comprising a scale body composed of a bottom plate, a weighing sensor and a bearing beam, two weighing sensors are symmetrically mounted on the bottom plate, and the bearing beam is fixed on the two weighing sensors to serve as a platform for weighing and measuring; a pressure head for cooperating with the ladle support is mounted on the bearing beam; the scale body is equipped with an argon supply sealing device that automatically completes the connection of the argon blowing gas path when the ladle is put down for weighing and automatically completes the disconnection of the argon blowing gas path when the ladle is lifted; the argon supply sealing device comprises a pressure plate mounted on the ladle and an elastic joint mounted on the bearing beam that realizes sealing connection with the pressure plate by means of displacement elastic force compensation contact when under pressure; the elastic joint is connected to the argon supply gas pipe, and a connection hole connected to the argon blowing pipe on the ladle is opened on the pressure plate. The invention has a simple structure, accurate measurement, and can realize rapid and automatic connection of the argon blowing gas path for refining outside the furnace.

Description

Technical Field

[0001] The invention relates to a weighing instrument, in particular to an electronic scale for a molten steel ladle, specifically to an electronic scale for a molten steel ladle with an argon supply sealing device. Background Art

[0002] At present, when steelmaking is charged and steel is tapped, an electronic ladle scale is used to weigh the ladle carrying high-temperature molten steel to determine the output or quality of the molten steel. At the same time, in order to achieve refining outside the furnace, the molten steel must be treated with argon blowing. The purpose of argon blowing is to uniform the chemical composition and temperature of the molten steel, accelerate chemical reactions, remove harmful gases and purify the molten steel. In the prior art, when tapping steel, the argon quick-change joint is manually connected, and the argon is introduced into the ladle through a metal hose. This often causes molten steel to splash, burn the metal hose and the quick-change joint, and make it impossible to blow argon. In particular, when lifting the ladle, the argon blowing quick-change joint must be manually disconnected, which greatly increases the probability of workers being scalded by the splashing molten steel. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a ladle electronic scale with an argon supply sealing device in view of the current status of the above-mentioned prior art. The ladle electronic scale can not only meet the traditional online measurement needs, but also realize the rapid automatic connection of the refining argon blowing gas path outside the furnace.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] An electronic scale for a molten steel ladle with an argon supply and sealing device comprises a scale body consisting of a bottom plate, a weighing sensor and a bearing beam, wherein two weighing sensors are symmetrically mounted on the bottom plate with the midline of the bottom plate as the symmetry axis, and the bearing beam is mounted and fixed on the two weighing sensors to serve as a platform for weighing and measuring; and a pressure head for cooperating with the support of the molten steel ladle is fixedly mounted on the bearing beam at a position on the same center line as each weighing sensor; the scale body is provided with an argon supply and sealing device which automatically completes the connection of an argon blowing gas path when the molten steel ladle is put down for weighing and automatically completes the disconnection of the argon blowing gas path when the molten steel ladle is lifted; the argon supply and sealing device comprises a pressure plate mounted on the molten steel ladle and an elastic joint mounted on the bearing beam which realizes sealing connection with the pressure plate by means of displacement elastic force compensation contact when under pressure; the elastic joint is connected to an argon supply gas pipe, and a connecting hole which is connected to the argon blowing pipe on the molten steel ladle is opened on the pressure plate.

[0006] To optimize the above technical solutions, the specific measures taken also include:

[0007] The top surface of the above-mentioned load-bearing beam is processed with an inwardly concave square pressure head positioning cavity and a joint mounting hole for installing an elastic joint; nine light holes and four threaded holes are formed in the pressure head positioning cavity, and the load-bearing beam is fixedly installed on the heavy sensor by passing the first bolt through the light hole, and the pressure head is positioned and installed in the pressure head positioning cavity by the second bolt and the threaded hole. The joint mounting hole is a step hole composed of a first step hole, a second step hole and a cylindrical hole that are through-made from top to bottom, and the elastic joint is fixedly installed in the joint mounting hole.

[0008] The above-mentioned elastic joint consists of a circular flange, a pressure head and a butterfly spring; the circular flange is positioned and installed in the first step hole of the joint mounting hole by a third bolt, a displacement elastic cavity is formed between the circular flange and the second step hole, the pressure head is arranged in the displacement elastic cavity, the outer peripheral surface of the outer ring boss formed on the pressure head is matched with the guide sliding of the inner hole wall of the circular flange, and the circular flange is formed with an inner ring boss that is matched with the outer ring boss to prevent the pressure head from escaping from the displacement elastic cavity upward; the butterfly spring is mounted on the spring guide column formed on the pressure head, and the upper end of the butterfly spring is in contact with the bottom surface of the pressure head, and the lower end of the butterfly spring is in contact with the step surface of the second step hole.

[0009] The top surface of the above-mentioned pressure head is formed with a large cover cavity which is connected to the connecting hole of the pressure plate in the form of a cover sleeve. The center of the large cover cavity is downwardly penetrated by the spring guide column and an air guide hole is processed therein. The bottom surface of the spring guide column is welded with a pipe joint which is connected to the air guide hole, and the pipe joint is connected to the argon supply pipe. The top surface of the pressure head is processed with a sealing annular groove surrounding the large cover cavity, and a fluororubber sealing ring is installed in the sealing annular groove for achieving sealed docking between the pressure plate and the pressure head.

[0010] The above-mentioned pressure plate is installed on the ear seat bearing plate of the ladle, and a square pressure plate mounting groove is formed on the ear seat bearing plate. The pressure plate is fixedly installed in the pressure plate mounting groove of the ladle by the fourth bolt, and after the pressure plate is installed, the horizontal plane of the bottom surface of the pressure plate is on the same horizontal plane as the horizontal plane of the bottom surface of the ear seat bearing plate; a pressure plate pipe connected to the connecting hole is welded on the pressure plate, and the pressure plate pipe is connected to the argon blowing gas path on the ladle; the diameter of the large cover cavity is at least twice the diameter of the connecting hole, and the width of the pressure plate is greater than or equal to the diameter of the circular flange.

[0011] Both ends of the top surface of the above-mentioned load-bearing beam are designed with slag guiding slopes for rolling the fallen slag down the load-bearing beam, and two lifting rings for conveniently lifting the load-bearing beam are symmetrically installed on the top surface of the load-bearing beam.

[0012] The lower end of the above-mentioned load-bearing beam is processed with a baffle fixing edge along the periphery of the entire load-bearing beam. The baffle fixing edge is fixed and hoisted with a baffle in sequence by the fifth bolt to prevent the falling steel slag from burning the weighing sensor. The weighing sensor is located in the space surrounded by the baffle, the bottom plate and the load-bearing beam.

[0013] The above-mentioned base plate 1 is provided with a through hole for the argon gas pipe to pass through and a small hole for the data line to pass through, and a load-limiting support plate is welded on the base plate to prevent the weighing sensor from being overloaded and damaged. The load-limiting support plate is provided with a wire hole for the data line to pass through and connect to the weighing sensor.

[0014] The weighing sensor is padded with a copper gasket for ensuring the flatness of the load-bearing beam installation. The weighing sensor is a high-temperature resistant sensor, and is fixedly mounted on the base plate by a sixth bolt.

[0015] The scale body is fixedly mounted on the top surface of the scale base, and guide frames for accurately positioning the steel ladle and supporting it on the pressure head are mounted on both ends of the top surface of the scale base.

[0016] Compared with the prior art, the scale body of the present invention is equipped with an argon supply sealing device. When the ladle is hung on the scale body for weighing, the argon supply sealing device can automatically complete the connection of the argon blowing gas path through the sealing method of displacement elastic force compensation contact by relying on the gravity of the molten steel ladle, and can automatically complete the disconnection of the argon blowing gas path when the molten steel ladle is hung off the scale body, avoiding the problem of the traditional argon blowing process requiring manual connection of the argon quick-change joint, thereby realizing the automatic connection and disconnection of the argon blowing gas path and ensuring the safety of argon blowing. The present invention also installs a pressure head at the same center line position of the load-bearing beam of the scale body and the weighing sensor, so that when the molten steel ladle is seated and subjected to the pressure on the pressure head, the weight of the molten steel ladle can be vertically transmitted to the weighing sensor through the load-bearing beam, thereby better ensuring the overall measurement accuracy of the molten steel ladle electronic scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 yes Figure 1 A top view of the structure of the scale body;

[0019] Figure 3 yes Figure 2 AA section view;

[0020] Figure 4 yes Figure 3 The local enlarged schematic diagram of point Ⅰ in the middle;

[0021] Figure 5 yes Figure 3 A partial enlarged schematic diagram of the middle II;

[0022] Figure 6 It is a top view of the structure of the base plate of the present invention;

[0023] Figure 7 yes Figure 6 Bottom view of

[0024] Figure 8 It is a top view structural diagram of the load-bearing beam of the present invention;

[0025] Fig. 9 yes Figure 8 Bottom view with BB direction;

[0026] Fig.10 It is a schematic diagram of the assembly structure of the pressure plate of the present invention;

[0027] Fig.11 It is a structural schematic diagram of the pressure plate of the present invention;

[0028] Fig.12 yes Fig.11 Bottom view of

[0029] Fig.13 It is a structural schematic diagram of the elastic joint of the present invention;

[0030] Fig.14 yes Fig.13 Cross-sectional structural diagram of the mid-round flange;

[0031] Fig.15 yes Fig.13 Cross-sectional structural diagram of the medium pressure head. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0033] Figures 1 to 15 It is a structural schematic diagram of the present invention.

[0034] The accompanying drawings are marked as follows: ear seat bearing plate B, lifting ring H, argon supply pipe G, first bolt L1, second bolt L2, third bolt L3, fourth bolt L4, fifth bolt L5, sixth bolt L6, displacement elastic cavity Q, fluororubber sealing ring M, copper gasket T, bottom plate 1, through hole 1a, small hole 1b, load limit support plate 11, wire hole 11a, weighing sensor 2, bearing beam 3, pressure head positioning cavity 3a, light hole 3b, threaded hole 3c, first platform Step hole 3d, second step hole 3e, cylindrical hole 3f, slag guide slope 31, baffle fixing edge 32, scale body 4, pressure head 5, pressure plate 6, connecting hole 6a, pressure plate connecting pipe 61, elastic joint 7, circular flange 71, inner ring boss 711, pressure head 72, large cover cavity 72a, air guide hole 72b, sealing annular groove 72c, outer ring boss 721, spring guide column 722, butterfly spring 73, pipe joint 74, baffle 8, scale body base 9, guide frame 91.

[0035] like Figures 1 to 15As shown, the present invention discloses an electronic scale for a molten steel ladle with an argon supply sealing device, and the electronic scale for the molten steel ladle includes a scale body 4 composed of a bottom plate 1, a weighing sensor 2 and a load-bearing beam 3. The scale body 4 is equipped with an argon supply sealing device for ensuring that the argon blowing gas path is automatically connected, conducted or separated and disconnected, thereby solving the problem that the connection or disconnection of the argon blowing gas path in the traditional argon blowing process is manually operated, and avoiding the risk of employees being scalded by the splashing molten steel. When the molten steel ladle is hoisted onto the scale body 4 for weighing, the argon supply sealing device can automatically complete the connection of the argon blowing gas path by relying on the weight pressure of the molten steel ladle, and automatically complete the disconnection of the argon blowing gas path when the molten steel ladle is hoisted. The argon supply sealing device of the present invention is composed of an upper and a lower part, the upper part is a pressure plate 6 installed on the molten steel ladle, and the lower part is an elastic joint 7 installed on the load-bearing beam 3. When the ladle is hoisted onto the load-bearing beam 3 of the scale body 4, the pressure plate 6 is pressed on the elastic joint 7 under the gravity of the ladle. When under pressure, the elastic joint 7 achieves sealed docking with the pressure plate 6 by means of displacement elastic compensation contact, thereby completing the docking and connection of the argon blowing gas path. When the ladle is hoisted, since the pressure plate 6 is fixed on the ladle, the pressure plate 6 will be hoisted together with the ladle and separated from the elastic joint 7, thereby achieving automatic disconnection of the argon blowing gas path. In this way, the entire process of docking and disconnecting the argon blowing gas path does not require manual operation, which can prevent employees from being scalded by the splashing molten steel. The pressure plate 6 is a steel plate with a connection hole 6a in the center for connecting the argon gas path, and the connection hole 6a is connected to the argon blowing pipe on the ladle. The elastic joint 7 is connected to the argon supply pipe G, and the argon supply pipe G is connected to the argon gas source. Argon gas can pass through the argon supply pipe G, the elastic joint 7, the connecting hole 6a of the pressure plate 6 and the argon blowing pipe to complete the off-furnace refining of the molten steel in the ladle.

[0036] The scale body 4 of the present invention is provided with two weighing sensors 2, and the two weighing sensors 2 are symmetrically installed on the plate surface of the bottom plate 1 with the center line of the bottom plate 1 as the symmetry axis. The load-bearing beam 3 is fixed on the two weighing sensors 2 as a platform for weighing and metering, so that the weight generated on the load-bearing beam 3 can directly obtain weighing data through the weighing sensor 2. In order to make the ladle fully stressed at the center stress position of the weighing sensor 2 to obtain better measurement accuracy, the present invention has a pressure head 5 fixedly installed on the load-bearing beam 3 at the same center line as each weighing sensor 2 for supporting the ladle; in this way, when the ladle is seated, it is stressed on the pressure head 5, and then the weight of the ladle is transmitted to the weighing sensor 2 through the load-bearing beam 3 to obtain vertical pressure. Such a design can ensure the overall measurement accuracy of the ladle electronic scale.

[0037] In the embodiment, Figure 4 and Figure 8As shown, the present invention is processed on the top surface of the load-bearing beam 3 with a concave pressure head positioning cavity 3a for installing the pressure head 5 and a joint installation hole for installing the elastic joint 7. The pressure head positioning cavity 3a is a square structure adapted to the pressure head 5, and nine light holes 3b are processed downwardly through the pressure head positioning cavity 3a, so as to facilitate the use of the first bolt L1 to pass through the light hole 3b to fix the load-bearing beam 3 on the weight sensor 2. In addition, four threaded holes 3c are processed in the pressure head positioning cavity 3a at positions relatively close to the four corners, and the pressure head 5 is positioned and installed in the pressure head positioning cavity 3a by the second bolt L2 and the threaded hole 3c. As shown Fig. 9 As shown, the joint installation hole of the present invention is a stepped hole composed of a first stepped hole 3d, a second stepped hole 3e and a cylindrical hole 3f which are formed from top to bottom, and the elastic joint 7 is fixedly installed in the joint installation hole.

[0038] In the embodiment Fig.13 As shown, the elastic joint 7 of the present invention is composed of a circular flange 71, a pressure head 72 and a butterfly spring 73; the circular flange 71 is processed with six mounting holes, and the first step hole 3d is processed with six screw holes. The circular flange 71 passes through the mounting hole through the third bolt L3 and is screwed with the screw hole to be positioned and installed in the first step hole 3d of the joint mounting hole. A displacement elastic cavity Q is formed between the circular flange 71 and the second step hole 3e, and the pressure head 72 is arranged in the displacement elastic cavity Q, so that the pressure head 72 can move up and down in the displacement elastic cavity Q. Fig.15 As shown, the outer ring boss 721 is formed on the circumferential surface of the pressure head 72, and the outer circumferential surface of the outer ring boss 721 is matched with the inner hole wall of the circular flange 71 for guiding sliding. In order to prevent the pressure head 72 from escaping upward from the displacement elastic cavity Q, as shown in FIG. Fig.14 As shown, the circular flange 71 is formed with an inner ring boss 711, the diameter of the inner ring boss 711 is larger than the diameter of the pressure head 72 and smaller than the diameter of the outer ring boss 721, and the inner ring boss 711 and the outer ring boss 721 are limitedly matched, so that the pressure head 72 can be limited in the displacement elastic cavity Q. The butterfly spring 73 is also arranged in the displacement elastic cavity Q, and the butterfly spring 73 is sleeved on the spring guide column 722 formed by the pressure head 72, the upper end of the butterfly spring 73 is in contact with the bottom surface of the pressure head 72, and the lower end of the butterfly spring 73 is in contact with the step surface of the second step hole 3e. When the pressure head 72 is pressed by the pressure plate 6, the pressure head 72 can compress the butterfly spring 73 to move downward, and the spring force of the butterfly spring 73 gives the pressure head 72 an upward supporting force, so that the pressure head 72 and the pressure plate 6 can be in contact with each other through the displacement elastic compensation pressure, thereby improving the sealing effect when the gas path is connected.

[0039] In the embodiment Fig.15As shown, the top surface of the pressure head 72 of the present invention is formed with a large cover cavity 72a that is connected to the connection hole 6a on the pressure plate 6 in the form of a cover sleeve. The large cover cavity 72a can cover the connection hole 6a, so that even if the docking accuracy is not high, the connection of the gas path can be guaranteed. The center of the large cover cavity 72a passes through the spring guide column 722 downward and is processed with an air guide hole 72b. The bottom surface of the spring guide column 722 is welded with a pipe joint 74 that is connected to the air guide hole 72b, and the pipe joint 74 is connected to the argon supply pipe G. In order to improve the sealing performance, the present invention processes a sealing annular groove 72c on the top surface of the pressure head 72 around the large cover cavity 72a, and a fluororubber sealing ring M is installed in the sealing annular groove 72c for achieving sealed docking between the pressure plate 6 and the pressure head 72.

[0040] In the embodiment Fig.10 As shown, the pressure plate 6 of the present invention is installed on the ear seat bearing plate B of the ladle, and a square pressure plate mounting groove is formed on the ear seat bearing plate B. The pressure plate 6 is fixedly installed in the pressure plate mounting groove of the ladle by the fourth bolt L4, and after the pressure plate 6 is installed, the horizontal plane where the bottom surface of the pressure plate 6 is located is on the same horizontal plane as the horizontal plane where the bottom surface of the ear seat bearing plate B is located; a pressure plate pipe 61 connected to the connecting hole 6a is welded on the pressure plate 6, and the pressure plate pipe 61 is connected to the argon blowing gas path on the ladle; the diameter of the large cover cavity 72a is at least twice the diameter of the connecting hole 6a, and the width of the pressure plate 6 is greater than or equal to the diameter of the circular flange 71.

[0041] Due to the harsh working conditions of the ladle electronic scale, steel slag may fall on the load-bearing beam 3 of the electronic scale when the ladle electronic scale is used. In order to prevent the fallen steel slag from accumulating on the load-bearing beam 3, Figure 2 and Figure 3 As shown, the present invention is also designed with slag guiding slopes 31 at both ends of the top surface of the load-bearing beam 3, so that the slope of the slag guiding slopes 31 can be used to make the fallen steel slag roll down the load-bearing beam 3, achieving the purpose of automatic slag guiding. The present invention is also symmetrically installed with two lifting rings H on the top surface of the load-bearing beam 3. It is convenient to lift the load-bearing beam or the entire scale body 4.

[0042] In order to ensure that the fallen slag does not enter the electronic scale, the lower end of the load beam 3 of the present invention is processed with a baffle fixing edge 32 along the periphery of the entire load beam 3, and the baffle fixing edge 32 is fixed and hoisted with a baffle 8 for preventing the fallen slag from burning the weighing sensor 2 in sequence by the fifth bolt L5, and the weighing sensor 2 is located in the space surrounded by the baffle 8, the bottom plate 1 and the load beam 3. The present invention uses the baffle 8 fixed by the fifth bolt L5 around the load beam 3 for protection, which meets the actual working condition requirements of the ladle electronic scale.

[0043] like Figure 6 and Figure 7As shown, the base plate 1 of the present invention is provided with a through hole 1a for the argon gas pipe G to pass through and a small hole 1b for the data line to pass through, and a load limiting support plate 11 for preventing the weighing sensor 2 from being overloaded and damaged is welded on the base plate 1, and the load limiting support plate 11 is provided with a wire hole 11a for the data line to pass through and connect to the weighing sensor 2.

[0044] In the embodiment, a copper gasket T is provided on the weighing sensor 2 to ensure the flatness of the installation of the load-bearing beam 3. The weighing sensor 2 is a high temperature resistant sensor, and the weighing sensor 2 is fixedly mounted on the bottom plate 1 by a sixth bolt L6. In order to ensure that the load-bearing beam 3 installed on the two weighing sensors 2 can remain relatively flat, the present invention adopts a transition method of a copper gasket T to enable the ladle electronic scale to have the ability of self-balancing adjustment when in use.

[0045] like Figure 1 As shown, the scale body 4 of the present invention is fixedly mounted on the top surface of the scale base 9, and guide frames 91 for accurately positioning the ladle and supporting it on the pressure head 5 are installed at both ends of the top surface of the scale base 9.

[0046] When the electronic scale for the ladle of the present invention is working, the elastic body in the weighing sensor 2 is deformed, the impedance of the strain gauge bridge on the viscoelastic body is changed, and an electrical signal proportional to the weight value is output, which is processed accordingly by electronic devices such as the amplifier, A / D converter, and microprocessor inside the sensor.

[0047] The best embodiment of the present invention has been described, and various changes or modifications made by those skilled in the art will not depart from the scope of the present invention.

Claims

1. An electronic steel ladle scale with an argon supply sealing device, comprising a scale body (4) consisting of a bottom plate (1), a weighing sensor (2) and a load-bearing beam (3), wherein: Two weighing sensors (2) are symmetrically mounted on the bottom plate (1) with the midline of the bottom plate (1) as the axis of symmetry. The bearing beam (3) is mounted and fixed on the two weighing sensors (2) to serve as a weighing and measuring platform. A pressure head (5) for cooperating with a ladle support is fixedly mounted on the bearing beam (3) at a position on the same center line as each weighing sensor (2). The scale body (4) is provided with an argon supply sealing device which automatically completes the connection with the argon blowing path when the ladle is lowered for weighing and automatically completes the disconnection of the argon blowing path when the ladle is lifted. The argon supply sealing device comprises a pressure plate (6) mounted on the ladle and an elastic joint (7) mounted on the bearing beam (3) which realizes sealing connection with the pressure plate (6) by means of displacement elastic compensation contact when under pressure. The elastic joint (7) is connected to an argon supply pipe (G), and a connecting hole (6a) which is connected to the argon blowing pipe on the ladle is opened on the pressure plate (6).

2. The electronic steel ladle balance with an argon supply sealing device according to claim 1, characterized in that: The top surface of the bearing beam (3) is processed with an inwardly concave square pressure head positioning cavity (3a) and a joint installation hole for installing an elastic joint (7); nine light holes (3b) and four threaded holes (3c) are formed in the pressure head positioning cavity (3a); the bearing beam (3) is fixedly installed on the weight sensor (2) through the light hole (3b) via a first bolt (L1); the pressure head (5) is positioned and installed in the pressure head positioning cavity (3a) through a second bolt (L2) and the threaded hole (3c); the joint installation hole is a step hole composed of a first step hole (3d), a second step hole (3e) and a cylindrical hole (3f) which are formed from top to bottom; and the elastic joint (7) is fixedly installed in the joint installation hole.

3. The electronic scale for a ladle with an argon supply sealing device according to claim 2, characterized in that: The elastic joint (7) is composed of a circular flange (71), a pressure head (72) and a butterfly spring (73); the circular flange (71) is positioned and installed in the first step hole (3d) of the joint installation hole through a third bolt (L3); a displacement elastic cavity (Q) is formed between the circular flange (71) and the second step hole (3e); the pressure head (72) is arranged in the displacement elastic cavity (Q); the outer peripheral surface of the outer ring boss (721) formed by the pressure head (72) is aligned with the circular flange (71) ) is matched with the inner hole wall guide sliding of the pressing head (72), and the circular flange (71) is formed with an inner ring boss (711) which is matched with the outer ring boss (721) to prevent the pressing head (72) from escaping upward from the displacement elastic cavity (Q); the butterfly spring (73) is mounted on the spring guide column (722) formed on the pressing head (72), and the upper end of the butterfly spring (73) is abutted against the bottom surface of the pressing head (72), and the lower end of the butterfly spring (73) is abutted against the step surface of the second step hole (3e).

4. The electronic scale for a ladle with an argon supply sealing device according to claim 3, characterized in that: The top surface of the pressure head (72) is formed with a large cover cavity (72a) which is connected to the connection hole (6a) of the pressure plate (6) in the form of a cover sleeve. The center of the large cover cavity (72a) is downwardly penetrated through the spring guide column (722) and is processed with an air guide hole (72b). The bottom surface of the spring guide column (722) is welded with a pipe joint (74) connected to the air guide hole (72b), and the pipe joint (74) is connected to the argon supply pipe (G); the top surface of the pressure head (72) is processed with a sealing annular groove (72c) surrounding the large cover cavity (72a), and a fluororubber sealing ring (M) is installed in the sealing annular groove (72c) for achieving sealed connection between the pressure plate (6) and the pressure head (72).

5. The electronic scale for a ladle with an argon supply sealing device according to claim 4, characterized in that: The pressure plate (6) is installed on the ear seat bearing plate (B) of the ladle, and a square pressure plate installation groove is formed on the ear seat bearing plate (B). The pressure plate (6) is fixedly installed in the pressure plate installation groove of the ladle through a fourth bolt (L4), and after the pressure plate (6) is installed, the horizontal plane where the bottom surface of the pressure plate (6) is located is on the same horizontal plane as the horizontal plane where the bottom surface of the ear seat bearing plate (B) is located; a pressure plate pipe (61) connected to the connecting hole (6a) is welded on the pressure plate (6), and the pressure plate pipe (61) is connected to the argon blowing gas path on the ladle; the diameter of the large cover cavity (72a) is at least twice the diameter of the connecting hole (6a), and the width of the pressure plate (6) is greater than or equal to the diameter of the circular flange (71).

6. The electronic steel ladle balance with an argon supply sealing device according to claim 5, characterized in that: Both ends of the top surface of the bearing beam (3) are designed with slag guiding slopes (31) for causing the fallen slag to roll off the bearing beam (3), and two lifting rings (H) for conveniently lifting the bearing beam are symmetrically installed on the top surface of the bearing beam.

7. The electronic steel ladle balance with an argon supply sealing device according to claim 6, characterized in that: The lower end of the load-bearing beam (3) is processed with a baffle fixing edge (32) along the periphery of the entire load-bearing beam (3), and baffles (8) for preventing falling steel slag from burning the weighing sensor (2) are fixed and hoisted on the baffle fixing edge (32) in sequence by a fifth bolt (L5). The weighing sensor (2) is located in a space surrounded by the baffle (8), the bottom plate (1) and the load-bearing beam (3).

8. The electronic steel ladle balance with an argon supply sealing device according to claim 7, characterized in that: The bottom plate (1) is provided with a through hole (1a) for allowing an argon gas pipe (G) to pass through and a small hole (1b) for allowing a data line to pass through, and a load-limiting support plate (11) for preventing the weighing sensor (2) from being damaged by overload is welded on the bottom plate (1), and the load-limiting support plate (11) is provided with a wire hole (11a) for allowing a data line to pass through and connect to the weighing sensor (2).

9. The electronic steel ladle balance with an argon supply sealing device according to claim 8, characterized in that: A copper gasket (T) is provided on the weighing sensor (2) for ensuring the flatness of the installation of the load-bearing beam (3); the weighing sensor (2) is a high-temperature resistant sensor; the weighing sensor (2) is fixedly mounted on the base plate (1) by a sixth bolt (L6).

10. The electronic steel ladle balance with an argon supply sealing device according to claim 9, characterized in that: The scale body (4) is fixedly mounted on the top surface of the scale base (9), and guide frames (91) for accurately positioning the ladle and supporting it on the pressure head (5) are mounted on both ends of the top surface of the scale base (9).

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