An argon blowing sealing module with weighing compensation function

Abstract

The present invention discloses an argon blowing sealing module with a weighing compensation function, comprising a lower part of an argon blowing device that can be sealed and pressed and docked with an upper part of an argon blowing device installed on a molten steel ladle, a gas supply pipe for supplying argon gas connected to the lower part of the argon blowing device, a weighing sensor for measuring the force carried by the lower part of the argon blowing device after the molten steel ladle is seated, the weighing sensor is fixedly mounted on a weighing sensor bottom plate, a weighing accessory is embedded on the upper end of the weighing sensor, the lower part of the argon blowing device is fixedly mounted on the weighing accessory, and the gas supply pipe passes through the weighing sensor bottom plate, the weighing sensor and the weighing accessory from bottom to top in sequence and is connected to the lower part of the argon blowing device. The present invention has a compact structure, a reasonable design, good sealing performance, and can accurately measure the force generated by the argon blowing sealing connection.

Description

Technical Field

[0001] The invention relates to a weighing instrument, in particular to an argon blowing sealing module used in an electronic scale for a steel ladle, specifically an argon blowing sealing module with a weighing compensation function. Background Art

[0002] The emergence of the automatic argon blowing sealing device has changed the design of the semi-sealed frame structure of the steel ladle electronic scale; in order to ensure that the use accuracy of the steel ladle electronic scale meets the on-site process requirements, the steel ladle electronic scale must not be affected by external forces during use, but the automatic argon blowing sealing device must be installed below the support surface of the steel ladle ear seat, in the same area as the installation position of the steel ladle electronic scale, that is, below the steel ladle ear seat. The automatic argon blowing device is divided into upper and lower parts. The upper part of the automatic argon blowing device is installed at the center below the steel ladle ear seat, and the lower part of the automatic argon blowing device is installed on the weighing box of the steel ladle electronic scale. When the electronic scale for ladle weighs the ladle, four pressure heads are used under the ladle ears to directly bear force on the weighing sensor to measure the entire ladle as a whole. When the automatic argon blowing device is used to measure the ladle as a whole, additional supporting points are added under the ladle ears. The connection seal of the automatic argon blowing device must share a part of the force of the entire ladle weight, and the force it bears is not constant. If the measurement of this point is ignored after the automatic argon blowing device is installed, the overall measurement accuracy of the ladle will definitely be seriously affected. Therefore, how to detect the force borne by the automatic argon blowing device on the ladle to ensure the accuracy of the ladle measurement has become the focus of research in this industry. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an argon blowing sealing module with a weighing compensation function which has a compact structure, a reasonable design and can accurately measure the force generated by the argon blowing sealing connection in view of the current status of the above-mentioned prior art.

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

[0005] An argon blowing sealing module with a weighing compensation function comprises a lower part of an argon blowing device which can be sealed and pressed and docked with an upper part of an argon blowing device installed on a molten steel ladle, a gas supply pipe for supplying argon gas is connected to the lower part of the argon blowing device, a weighing sensor for measuring the force borne by the lower part of the argon blowing device after the molten steel ladle is placed on the ladle is provided at the lower part of the argon blowing device, the weighing sensor is fixedly mounted on a weighing sensor bottom plate, a weighing accessory is embedded on the upper end of the weighing sensor, the lower part of the argon blowing device is fixedly mounted on the weighing accessory, and the gas supply pipe passes through the weighing sensor bottom plate, the weighing sensor and the weighing accessory in sequence from bottom to top and is connected to the lower part of the argon blowing device.

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

[0007] The above-mentioned weighing sensor is a circular plate type weighing sensor, and the circular chassis of the weighing sensor is formed with six sensor mounting holes of equal arc for fixing the weighing sensor on the bottom plate of the weighing sensor through sensor bolts, and the circular weighing plate of the weighing sensor is formed with eight sensor threaded holes of equal arc for fixing weighing accessories.

[0008] The above-mentioned weighing sensor is axially penetrated with an air pipe through hole for the air supply pipe to pass through, and the bottom surface of the circular chassis of the weighing sensor leads to a weighing signal acquisition line through an outlet waterproof connector. The weighing sensor bottom plate is formed with mounting screw holes for spirally cooperating with the sensor bolts, an outlet hole for concealing and protecting the outlet waterproof connector, and a central through hole for the air supply pipe to pass through; the outlet waterproof connector cover is sleeved in the outlet hole of the bottom plate of the weighing sensor.

[0009] The above-mentioned weighing accessory is a metal plate with a square structure, and an accessory through hole for passing the air supply pipe is formed axially through the center of the weighing accessory, and eight countersunk holes are formed in equal arcs around the accessory through hole on the weighing accessory. The countersunk holes are penetrated by hexagon socket bolts for screwing with the sensor threaded holes on the circular weighing plate of the weighing sensor to fix the weighing accessory on the weighing sensor.

[0010] The bottom surface of the weighing accessory is formed with a positioning cavity for positioning and nesting with the circular weighing plate of the weighing sensor, and the positioning cavity and the accessory through hole are arranged concentrically; the weighing accessory is formed with an accessory threaded hole for fixing and installing the lower part of the argon blowing device at a position relatively close to the four corners.

[0011] The lower part of the above-mentioned argon blowing device includes a square-structured flange and an elastic pressure head assembly that can ensure sealed docking with the upper part of the argon blowing device by means of displacement elastic force compensation; the elastic pressure head assembly consists of a pressure head and eight butterfly springs pressed under the bottom surface of the pressure head for providing displacement elastic force for the pressure head; the flange is formed with a clamping cavity for limiting the clamping of the pressure head and a flange screw hole for passing the flange bolt, and the flange bolt is spirally matched with the accessory threaded hole of the weighing accessory to fix the lower part of the argon blowing device on the weighing accessory.

[0012] The above-mentioned pressure head is elastically movably arranged in the clamping cavity of the flange plate, and a limiting annular platform is formed on the circumferential surface near the lower part of the pressure head for preventing the pressure head from escaping upward from the clamping cavity under the elastic force of the butterfly spring. A concave interface cavity and a sealing boss surrounding the interface cavity are formed in the center of the top surface of the pressure head, and a sealing ring for sealing is installed on the sealing boss. A connecting hole is formed downwardly through the center of the interface cavity, and a pipe joint is welded on the connecting hole for convenient docking with the air supply pipe.

[0013] Eight butterfly springs are evenly distributed around the connecting hole on the bottom surface of the pressure head in equal arcs, and a spring guide column for preventing the butterfly spring from lateral displacement is installed on the bottom surface of the pressure head corresponding to each butterfly spring, and the spring guide column cooperates with the butterfly spring set.

[0014] The above-mentioned weighing accessory is formed with eight spring positioning holes for accommodating corresponding butterfly springs. The eight spring positioning holes and eight countersunk holes are alternately arranged on the weighing accessory; the bottom surface of the butterfly spring is matched with the positioning step surface of the spring positioning hole for positioning and top contact, and the top surface of the butterfly spring is top-connected to the bottom surface of the pressure head.

[0015] A copper adjustment gasket for ensuring balance is provided between the top surface of the circular weighing pan and the bottom surface of the weighing accessory positioning cavity.

[0016] Compared with the prior art, the present invention fixes and assembles the lower part of the argon blowing device into an integral whole with the weighing sensor through the weighing attachment to form an independent metering component. When the ladle is seated, the present invention can measure the force generated when the lower part of the argon blowing device and the upper part of the argon blowing device are connected and sealed through the weighing sensor in the metering component, and output the measured data to the main station and the weighing data collected by the ladle electronic scale for summary and display. In this way, the metering accuracy of the ladle electronic scale can be avoided from being affected by the installation of the argon blowing sealing device, thereby ensuring the accuracy of the ladle metering.

[0017] The invention has compact structure, reasonable design, good sealing performance and can accurately measure the force generated by the argon blowing sealing connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the assembly structure of the present invention;

[0019] Figure 2 yes Figure 1 A schematic diagram of the structure from another angle;

[0020] Figure 3 It is a structural schematic diagram of the weighing sensor of the present invention;

[0021] Figure 4 yes Figure 3 A top view of

[0022] Figure 5 It is a schematic diagram of the structure of the weighing accessory of the present invention;

[0023] Figure 6 yes Figure 5 The cross-sectional structure diagram along the AA direction;

[0024] Figure 7 yes Figure 5 Cross-sectional structural diagram along the BB direction;

[0025] Figure 8 It is a schematic structural diagram of the lower part of the argon blowing device of the present invention;

[0026] Fig. 9 yes Figure 8 Top view of the . DETAILED DESCRIPTION

[0027] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0028] Figures 1 to 9 It is a structural schematic diagram of the present invention.

[0029] The accompanying drawings are marked as follows: positioning cavity K, sensor bolt L1, hexagon socket bolt L2, flange bolt L3, lower part 1 of argon blowing device, flange plate 11, card cavity 11a, flange screw hole 11b, pressure head 12, interface cavity 12a, connecting hole 12b, limiting annular platform 121, sealing boss 122, butterfly spring 13, pipe joint 14, spring guide column 15, weighing accessory 2, countersunk light hole 2a, accessory threaded hole 2b, accessory through hole 2c, spring positioning hole 2d, weighing sensor 3, sensor mounting hole 3a, sensor threaded hole 3b, air pipe through hole 3c, circular weighing pan 31, circular chassis 32, weighing sensor bottom plate 4, mounting screw hole 4a, outlet hole 4b, air supply pipe 5, outlet waterproof joint 6, weighing signal acquisition line 7, sealing ring 8, copper adjustment gasket 9.

[0030] At present, when steelmaking is charged and discharged, the ladle electronic 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 is also treated with argon blowing through an argon blowing device, so as to achieve the purpose of uniform chemical composition and temperature of the molten steel, accelerate chemical reactions, remove harmful gases and purify the molten steel through argon blowing. The argon blowing device includes two parts, namely the upper part of the argon blowing device installed under the ear seat of the ladle and the lower part of the argon blowing device 1 installed on the weighing box of the ladle electronic scale. When the ladle is hoisted onto the ladle electronic scale, the upper part of the argon blowing device and the lower part of the argon blowing device 1 are sealed and docked. However, since the argon blowing device adds additional support points to the overall measurement of the ladle, the connection seal of the argon blowing device must share a part of the force of the entire ladle weight, and the force share is not constant, which will have a serious impact on the accuracy of the overall measurement of the ladle. In view of this situation, the present invention discloses an argon blowing sealing module with a weighing compensation function, which can measure the force generated when the argon blowing sealing device of the ladle is connected and sealed, so that the measuring accuracy of the electronic scale of the ladle will not be affected by the installation and use of the automatic argon blowing sealing device.

[0031] The argon blowing sealing module with weighing compensation function of the present invention comprises a lower part 1 of the argon blowing device which can be sealed and pressed with the upper part of the argon blowing device installed on the ladle, and the lower part 1 of the argon blowing device is connected with a gas supply pipe 5 for supplying argon gas, and the gas supply pipe 5 can be connected with an argon gas source, so that the argon gas can enter the ladle through the gas supply pipe 5, the lower part 1 of the argon blowing device and the upper part of the argon blowing device. In order to detect the force generated when the lower part 1 of the argon blowing device and the upper part of the argon blowing device are sealed and docked after the ladle is placed, the lower part 1 of the argon blowing device of the present invention is equipped with a weighing sensor 3 for measuring the magnitude of the component force it bears, and the weighing sensor 3 is fixedly installed on a weighing sensor bottom plate 4, so that the argon blowing sealing module can be installed as a whole on the weighing box of the electronic scale of the ladle by using the weighing sensor bottom plate 4. In order to facilitate the assembly and installation of the lower part 1 of the argon blowing device and the weighing sensor 3, the present invention first fixes the lower part 1 of the argon blowing device on a weighing accessory 2, and then uses the weighing accessory 2 to fix and connect the weighing sensor 3 into one body, thereby forming an independent metering component. The weighing accessory 2 is mounted on the upper end of the weighing sensor 3 in an inlaid manner, thereby ensuring the installation accuracy between the weighing accessory 2 and the weighing sensor 3. The gas supply pipe 5 passes through the weighing sensor bottom plate 4, the weighing sensor 3 and the weighing accessory 2 from bottom to top in sequence and is connected to the lower part 1 of the argon blowing device.

[0032] In the embodiment Figure 3 and Figure 4 As shown, the weighing sensor 3 of the present invention is a circular plate type weighing sensor, which has a compact structure, a low installation height, and strong impact resistance. Six sensor mounting holes 3a are formed on the circular base plate 32 of the weighing sensor 3 in equal arcs. The sensor mounting holes 3a are used to penetrate the sensor bolts L1, so that the weighing sensor 3 is fixedly mounted on the weighing sensor base plate 4 by using the sensor bolts L1. Eight sensor threaded holes 3b with threads are formed on the circular weighing plate 31 of the weighing sensor 3 in equal arcs, so that the weighing accessory 2 and the weighing sensor 3 can be fixedly connected into one body through the sensor threaded holes 3b and the hexagon socket bolts L2.

[0033] Please continue to refer to the examples Figure 3 and Figure 4 In order to allow the air supply pipe 5 to be installed, the weighing sensor 3 of the present invention has an air pipe through hole 3c formed in the central axial direction. The weighing signal acquisition line 7 of the weighing sensor 3 is led out from the bottom surface of the circular chassis 32 of the weighing sensor 3 through the outlet waterproof connector 6. Figure 1 and Figure 2As shown, the weighing sensor base plate 4 of the present invention is formed with mounting screw holes 4a, outlet holes 4b and a central through hole. The mounting screw holes 4a are used to screw with the sensor bolt L1, the central through hole is used to pass the air supply pipe 5, and the outlet hole 4b is a protection hole. The outlet waterproof connector 6 is covered in the outlet hole 4b of the weighing sensor base plate 4, so as to achieve the purpose of protecting the weighing signal acquisition line 7 by concealing the outlet waterproof connector 6. The weighing signal acquisition line 7 is led out from the bottom surface of the weighing sensor 3 and then protected by the outlet hole 4b, which can prevent the signal line from being damaged due to the falling of steel slag, impact and other reasons.

[0034] In the embodiment, Figure 5 , Figure 6 and Figure 7 As shown, the weighing accessory 2 of the present invention is a square metal plate, and the weighing accessory 2 is formed with an accessory through hole 2c in the central axial direction, so that the air supply pipe 5 can pass through the accessory through hole 2c. The weighing accessory 2 is formed with eight countersunk holes 2a of equal arc around the accessory through hole 2c. The weighing accessory 2 is screwed with the sensor threaded hole 3b on the circular weighing plate 31 of the weighing sensor 3 through the hexagon socket bolt L2 passing through the countersunk hole 2a, and the weighing accessory 2 is fixed on the weighing sensor 3.

[0035] Depend on Figure 6 It can be clearly seen that the bottom surface of the weighing accessory 2 is formed with a positioning cavity K for positioning and nesting with the circular weighing plate 31 of the weighing sensor 3, and the circular weighing plate 31 of the weighing sensor 3 is nested in the positioning cavity K. The positioning cavity K of the present invention is concentrically arranged with the accessory through hole 2c, and an accessory threaded hole 2b is formed on the weighing accessory 2 at a position relatively close to the four corners, and the accessory threaded hole 2b is used to screw with the flange bolt L3, so as to fix the lower part 1 of the argon blowing device to the weighing accessory 2.

[0036] like Figure 8 and Fig. 9 As shown, the lower part 1 of the argon blowing device of the present invention includes a square-structured flange 11 and an elastic pressure head assembly. The elastic pressure head assembly can provide pressure buffering by means of displacement elastic force compensation during the process of sealing and docking with the upper part of the argon blowing device, and utilizes elastic force compensation to ensure the sealing of the connection. The elastic pressure head assembly consists of a pressure head 12 and eight butterfly springs 13 pressed under the bottom surface of the pressure head 12 for providing displacement elastic force for the pressure head 12. The flange 11 is formed with a clamping cavity 11a for limiting the clamping of the pressure head 12 and a flange screw hole 11b for passing the flange bolt L3.

[0037] The pressure head 12 is elastically movable up and down in the card cavity 11a of the flange 11. The pressure head 12 is formed with a limiting annular platform 121 on the peripheral surface near the lower part to prevent the pressure head 12 from slipping out of the card cavity 11a upwards under the elastic force of the butterfly spring 13. The upper end of the card cavity 11a is formed with an anti-slip convex shoulder that cooperates with the limiting annular platform 121. The center of the top surface of the pressure head 12 is formed with a concave interface cavity 12a and a sealing boss 122 surrounding the interface cavity 12a. The sealing boss 122 is installed with a sealing ring 8 for sealing. The center of the interface cavity 12a is formed with a connecting hole 12b through-molded downward, and a pipe joint 14 is welded on the connecting hole 12b for convenient docking with the air supply pipe 5. The horizontal plane of the sealing boss 122 of the pressure head 12 is higher than the horizontal plane of the top surface of the flange 11. When the pressure head 12 contacts the upper part of the argon blowing device, under the pressure of the molten steel ladle, the pressure head 12 can compress the butterfly spring 13 to move downward to achieve displacement elastic force compensation.

[0038] In the embodiment, the eight butterfly springs 13 of the present invention are evenly distributed in equal arcs around the connecting hole 12b on the bottom surface of the pressure head 12, and a spring guide column 15 is installed on the bottom surface of the pressure head 12 corresponding to each butterfly spring 13 to prevent the butterfly spring 13 from lateral displacement, and the spring guide column 15 is matched with the butterfly spring 13 set.

[0039] In the embodiment Figure 1 and Figure 5 As shown, eight spring positioning holes 2d for accommodating corresponding butterfly springs 13 are formed on the weighing accessory 2, and the eight spring positioning holes 2d and eight countersunk holes 2a are alternately arranged on the weighing accessory 2; the bottom surface of the butterfly spring 13 is matched with the positioning step surface of the spring positioning hole 2d for positioning and top contact, and the top surface of the butterfly spring 13 is top-connected to the bottom surface of the pressure head 12.

[0040] In the embodiment, a copper adjustment gasket 9 is provided between the top surface of the circular weighing pan 31 and the bottom surface of the positioning cavity K of the weighing accessory 2 to ensure balance.

[0041] The advantages of the present invention are:

[0042] 1. The lower part of the argon blowing device is connected to the weighing sensor through a weighing accessory to form a complete independent metering component.

[0043] 2. In the module design, the copper adjustment gasket is introduced to enable the module to have self-balancing adjustment ability during metering, which can not only ensure the accuracy of module metering, but also play a role in the sealing after the upper part and the lower part of the argon blowing device are connected.

[0044] 3. The weighing accessories adopt an inlaid design, which can not only meet the installation requirements of the lower part of the argon blowing device, but also ensure the stability of the overall components and have the ability to resist external impact.

[0045] 4. The weighing sensor adopts a circular plate structure design with compact structure, low installation height and strong impact resistance.

[0046] 5. The weighing signal acquisition line of the argon blowing sealing module adopts a concealed protection design. The line from the bottom of the weighing sensor is embedded in the line outlet hole of the bottom plate of the weighing sensor for protection, and the signal line will not be damaged due to the falling off and impact of steel slag.

[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 argon blowing sealing module with a weighing compensation function, comprising an argon blowing device lower part (1) that can be sealed and pressed with an argon blowing device upper part installed on a molten steel ladle, the argon blowing device lower part (1) being connected to a gas supply pipe (5) for supplying argon gas, characterized in that: The lower part (1) of the argon blowing device is provided with a weighing sensor (3) for measuring the force borne by the lower part (1) of the argon blowing device after the ladle is placed. The weighing sensor (3) is fixedly mounted on a weighing sensor base plate (4). A weighing accessory (2) is embedded on the upper end of the weighing sensor (3). The lower part (1) of the argon blowing device is fixedly mounted on the weighing accessory (2). The gas supply pipe (5) passes through the weighing sensor base plate (4), the weighing sensor (3) and the weighing accessory (2) in sequence from bottom to top to be connected to the lower part (1) of the argon blowing device. The weighing sensor (3) is a circular plate type weighing sensor, and the circular base plate (32) of the weighing sensor (3) is formed with six sensor mounting holes (3a) of equal arc for fixing the weighing sensor (3) on the weighing sensor base plate (4) via sensor bolts (L1), and the circular weighing plate (31) of the weighing sensor (3) is formed with eight sensor threaded holes (3b) of equal arc for fixing the weighing accessory (2); The weighing sensor (3) is provided with an air pipe through hole (3c) for passing an air supply pipe (5) in the central axial direction, and a weighing signal acquisition line (7) is led out from the bottom surface of the circular chassis (32) of the weighing sensor (3) via an outlet waterproof connector (6). The weighing sensor base plate (4) is provided with a mounting screw hole (4a) for spirally engaging with a sensor bolt (L1), an outlet hole (4b) for concealing and protecting the outlet waterproof connector (6), and a central through hole for passing an air supply pipe (5); the outlet waterproof connector (6) is covered in the outlet hole (4b) of the weighing sensor base plate (4).

2. The argon blowing sealing module with weighing compensation function according to claim 1 is characterized in that: The weighing accessory (2) is a metal plate with a square structure. The weighing accessory (2) is provided with an accessory through hole (2c) for passing the air supply pipe (5) therethrough in the central axial direction. The weighing accessory (2) is provided with eight countersunk holes (2a) formed in equal arcs around the accessory through hole (2c). The countersunk holes (2a) are provided with hexagon socket bolts (L2) for screwing with sensor threaded holes (3b) on a circular weighing plate (31) of a weighing sensor (3) to fix the weighing accessory (2) on the weighing sensor (3).

3. The argon blowing sealing module with weighing compensation function according to claim 2 is characterized in that: The bottom surface of the weighing accessory (2) is formed with a positioning cavity (K) for positioning and nesting with the circular weighing plate (31) of the weighing sensor (3), and the positioning cavity (K) and the accessory through hole (2c) are arranged concentrically; the weighing accessory (2) is formed with an accessory threaded hole (2b) for fixing and installing the lower part (1) of the argon blowing device at a position relatively close to the four corners.

4. The argon blowing sealing module with weighing compensation function according to claim 3 is characterized in that: The lower part (1) of the argon blowing device comprises a square flange (11) and an elastic pressure head assembly that can ensure sealed docking with the upper part of the argon blowing device by means of displacement elastic force compensation; the elastic pressure head assembly consists of a pressure head (12) and eight butterfly springs (13) pressed under the bottom surface of the pressure head (12) for providing displacement elastic force for the pressure head (12); the flange (11) is formed with a clamping cavity (11a) for limiting the clamping of the pressure head (12) and a flange screw hole (11b) for passing a flange bolt (L3); the flange bolt (L3) is spirally matched with the accessory threaded hole (2b) of the weighing accessory (2) to fix the lower part (1) of the argon blowing device on the weighing accessory (2).

5. The argon blowing sealing module with weighing compensation function according to claim 4 is characterized in that: The pressure head (12) is elastically arranged in the clamping cavity (11a) of the flange (11) so as to move up and down. The pressure head (12) is formed with a limiting annular platform (121) on the peripheral surface close to the lower part for preventing the pressure head (12) from escaping upward from the clamping cavity (11a) under the elastic force of the butterfly spring (13). The center of the top surface of the pressure head (12) is formed with a concave interface cavity (12a) and a sealing boss (122) surrounding the interface cavity (12a). A sealing ring (8) for sealing is installed on the sealing boss (122). A connecting hole (12b) is formed through the center of the interface cavity (12a) downward, and a pipe joint (14) is welded on the connecting hole (12b) for convenient connection with the air supply pipe (5).

6. The argon blowing sealing module with weighing compensation function according to claim 5 is characterized in that: The eight butterfly springs (13) are evenly distributed in equal arcs around the connecting hole (12b) on the bottom surface of the pressure head (12), and a spring guide column (15) for preventing the butterfly spring (13) from lateral displacement is installed on the bottom surface of the pressure head (12) corresponding to each butterfly spring (13), and the spring guide column (15) is matched with the butterfly spring (13) set.

7. The argon blowing sealing module with weighing compensation function according to claim 6 is characterized in that: The weighing accessory (2) is formed with eight spring positioning holes (2d) for accommodating corresponding butterfly springs (13); the eight spring positioning holes (2d) and the eight countersunk holes (2a) are alternately arranged on the weighing accessory (2); the bottom surface of the butterfly spring (13) is positioned and abutted with the positioning step surface of the spring positioning hole (2d); the top surface of the butterfly spring (13) is abutted with the bottom surface of the pressure head (12).

8. The argon blowing sealing module with weighing compensation function according to claim 7 is characterized in that: A copper adjustment gasket (9) is provided between the top surface of the circular weighing pan (31) and the bottom surface of the positioning cavity (K) of the weighing accessory (2) to ensure balance.

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