Electric arc furnace body weighing device

Abstract

The utility model discloses a furnace body weighing device of an electric arc furnace. The furnace body weighing device comprises a water-cooling cover plate, a water-cooling bottom plate, a weighing sensor, a pressure head and a buffer mechanism, the buffer mechanism comprises a supporting rod, a water-cooling bottom plate connecting seat and a water-cooling cover plate connecting seat; the water-cooling bottom plate mounting seat is hinged to a first connecting end of the supporting rod, the water-cooling cover plate connecting seat is hinged to a second connecting end of the supporting rod, and the buffer mechanism is used for connecting the water-cooling cover plate and the water-cooling bottom plate; the weighing sensor is arranged between the water-cooling bottom plate and the water-cooling cover plate, a contact of the weighing sensor faces upwards, the pressure head is arranged in the middle of the water-cooling cover plate in a manner of being driven to move up and down, and the bottom end of the pressure head is in contact with the contact, so that a gravity signal is received through the up-and-down movement of the cover plate; the problems can be effectively avoided, important support is provided for stable and accurate smelting, and the defects caused by a traditional structure are avoided.

Description

Technical Field

[0001] The utility model relates to the field of metallurgy, in particular to an electric arc furnace body weighing device. Background Art

[0002] In the smelting industry, electric arc furnace weighing devices are used to monitor the amount of molten steel within the furnace, control the rate and amount of scrap added, and determine the tapping yield. They provide reference data for furnace smelting control and are a crucial component of electric furnace equipment. They are typically installed at four points between the furnace body and the platform. Due to their close proximity to the furnace, the surrounding area during smelting is subject to high temperatures and high dust levels, creating a harsh working environment. A single weighing device failure can lead to significant errors in the entire weighing system, potentially even causing it to malfunction. This can hinder operators' ability to accurately assess smelting conditions, impacting the overall smelting process.

[0003] Therefore, in order to solve the above problems, an electric arc furnace body weighing device is needed, which can effectively avoid the occurrence of the above problems, provide important support for smooth and accurate smelting, and avoid the disadvantages brought by traditional structures. Utility Model Content

[0004] In view of this, the purpose of the present invention is to overcome the defects in the prior art and provide an electric arc furnace body weighing device that can effectively avoid the occurrence of the above problems, provide important support for smooth and accurate smelting, and avoid the disadvantages brought by traditional structures.

[0005] The electric arc furnace body weighing device of the utility model comprises a water-cooled cover plate, a water-cooled bottom plate, a weighing sensor, a pressure head and a buffer mechanism;

[0006] The buffer mechanism includes a support rod, a water-cooling base plate connecting seat and a water-cooling cover plate connecting seat; the water-cooling base plate mounting seat is hinged to the first connecting end of the support rod, the water-cooling cover plate connecting seat is hinged to the second connecting end of the support rod, the axis of the hinged water-cooling base plate mounting seat is parallel to the axis of the hinged water-cooling cover plate connecting seat, the water-cooling base plate mounting seat is fixed on the top surface of the water-cooling base plate, and the water-cooling cover plate connecting seat is fixed on the bottom surface of the water-cooling cover plate, so that the buffer mechanism forms a connection between the water-cooling cover plate and the water-cooling base plate;

[0007] The weighing sensor is arranged between the water-cooled base plate and the water-cooled cover plate, the contact of the weighing sensor is facing upward, the pressure head is driven to move up and down and is arranged in the middle of the water-cooled cover plate, and the bottom end of the pressure head is in contact with the contact so that the gravity signal is received through the up and down movement of the cover plate.

[0008] Furthermore, a circular hole is provided in the middle of the water-cooled cover plate, and the pressure head includes a pressure plate and a column fixed at the bottom of the pressure plate, the diameter of the column is consistent with the diameter of the circular hole, and the radial dimension of the pressure plate exceeds the diameter of the column.

[0009] Furthermore, the top of the contact has a bearing spherical surface, and the bottom of the column has a recess with the same size as the bearing spherical surface, so that the pressure head and the contact of the weighing sensor are adapted to contact and connect.

[0010] Furthermore, the buffer mechanism is composed of two groups vertically arranged between the water-cooled cover plate and the water-cooled bottom plate, and the support rods in the two groups of the buffer mechanism are "L"-shaped.

[0011] Furthermore, a positioning groove for installing a weighing sensor is provided on the water-cooled base plate.

[0012] Furthermore, an external water-cooling protective cover is provided around the weighing sensor.

[0013] Furthermore, the weighing sensor has at least two signal output terminals.

[0014] Furthermore, the water-cooling cover plate and the water-cooling bottom plate are connected via a protective plate.

[0015] Furthermore, it also includes a grounding bar connecting the water-cooled cover plate and the water-cooled bottom plate, and the grounding bar is connected to the grounding system.

[0016] The beneficial effects of the present invention are as follows: the present invention discloses an electric arc furnace weighing device, which improves the working environment of the weighing sensor through peripheral water cooling protection. The output of the two weighing signals can ensure normal use even if one signal has problems, and the two signals can be collected for comparison during operation. The more accurate weighing signal is used to provide important reference data for accurate smelting control. The two groups of buffer mechanisms are installed vertically to each other, which can effectively connect the water-cooled cover plate and the water-cooled bottom plate for horizontal positioning, so as to avoid the generation of large horizontal shear forces to damage the furnace scale, and have a certain degree of freedom in the vertical direction to avoid affecting the weighing accuracy. The reliability and accuracy of the furnace weighing are ensured by measures such as the multiple water cooling protection of the symmetrical body, the output of the two groups of weighing signals, the elimination of induced current by the grounding system, and the elimination of horizontal shear forces by the buffer mechanism. The operator can accurately judge the amount of molten steel in the furnace, the amount of scrap steel added, the amount of steel discharged, and the amount of steel remaining in the furnace, thereby ensuring the smooth progress of smelting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 It is a schematic side view of the structure of the utility model;

[0020] Figure 3 AA direction structural diagram of soil 1 of the utility model;

[0021] Figure 4 This is a schematic structural diagram of the water-cooled cover plate of the utility model;

[0022] Figure 5 This is a schematic structural diagram of the water-cooling base plate of the utility model;

[0023] Figure 6 This is a schematic structural diagram of the buffer mechanism of the utility model;

[0024] Figure 7 This is a schematic structural diagram of the pressure head of the utility model;

[0025] Figure 8 This is a schematic diagram of the structure of the weighing sensor of the utility model;

[0026] Figure 9 This is a side structural diagram of the weighing sensor of the utility model;

[0027] Figure 10 This is a structural diagram of the positioning cover of the utility model. DETAILED DESCRIPTION

[0028] Figure 1 The structural diagram of the present invention is shown in the figure. As shown in the figure, the electric arc furnace weighing device in this embodiment includes a water-cooled cover plate 1, a water-cooled bottom plate 2, a weighing sensor 3, a pressure head 4 and a buffer mechanism;

[0029] The water-cooled cover plate 1 and the water-cooled bottom plate 2 are respectively selected from any water-cooled plate in the prior art and used in this solution to reduce the temperature. The details will not be described here.

[0030] The buffer mechanism includes a support rod 5, a water-cooled base plate connecting seat 6 and a water-cooled cover plate connecting seat 7; the water-cooled base plate 2 mounting seat is hinged to the first connecting end of the support rod 5, the water-cooled cover plate connecting seat 7 is hinged to the second connecting end of the support rod 5, the axis of the hinged water-cooled base plate 2 mounting seat is parallel to the axis of the hinged water-cooled cover plate connecting seat 7, the water-cooled base plate 2 mounting seat is fixed on the top surface of the water-cooled base plate 2, and the water-cooled cover plate connecting seat 7 is fixed on the bottom surface of the water-cooled cover plate 1, so that the buffer mechanism forms a connection between the water-cooled cover plate 1 and the water-cooled base plate 2;

[0031] As shown in the figure, the main body of the support rod 5 is in the shape of a rod, and the two ends of the support rod 5 correspond to threaded connection sleeves respectively, and are hinged to the water-cooled base plate connecting seat 6 and the water-cooled cover plate connecting seat 7 through the sleeves. In this scheme, the buffer mechanism is two groups arranged vertically between the water-cooled cover plate 1 and the water-cooled base plate 2, and the support rods 5 in the two groups of the buffer mechanisms are "L"-shaped; the setting of the buffer mechanism can effectively horizontally position and connect the water-cooled cover plate 1 and the water-cooled base plate 2 to avoid generating large horizontal shear forces to damage the furnace scale, and has a certain degree of freedom in the vertical direction to avoid affecting the weighing accuracy.

[0032] The weighing sensor 3 is arranged between the water-cooled base plate 2 and the water-cooled cover plate 1, with the contact 31 of the weighing sensor 3 facing upward. The pressure head 4 is driven to move up and down and is arranged in the middle of the water-cooled cover plate 1. The bottom end of the pressure head 4 contacts the contact 31 so that the gravity signal is received through the up and down movement of the pressure head 4. The weighing sensor 3 has at least two signal output terminals 32. The weighing sensor 3 in this scheme selects any one of the weighing sensors 3 with dual output signals in the existing technology and is used in this scheme, which will not be described in detail here; the working environment of the weighing sensor 3 is improved by peripheral water cooling protection, and the output of its two weighing signals can ensure normal use even if one signal has problems, the other can also be used normally. During operation, the two signals can be collected for comparison, and the more accurate weighing signal is used to provide important reference data for precise smelting control; a temperature sensor 8 is also provided on the side wall of the weighing sensor 3, and an external water-cooling protective cover 9 is provided on the periphery of the weighing sensor 3, and the external water-cooling protective cover 9 covers the temperature sensor inside, wherein the temperature sensor and the external water-cooling protective cover 9 respectively select any one of the existing technologies according to actual conditions to achieve the established purpose, which will not be described in detail here, the setting of the temperature sensor and the external water-cooling protective cover 9 can detect the temperature of the weighing sensor 3 body in real time, effectively feedback the signal and control the cooling in real time, thereby achieving the purpose of multiple cooling protection, reducing the occurrence of danger, and improving the reliability and safety of the structure.

[0033] In this embodiment, the water-cooled base plate 2 is provided with a positioning groove 21 for installing the weighing sensor 3, and the positioning groove is matched with a positioning cover plate 22. The two are adapted to limit the bottom of the weighing sensor to prevent the weighing sensor 3 from shifting and ensure the weighing accuracy; the water-cooled cover plate 1 and the water-cooled base plate 2 are connected by a protective plate; the protective plate circumferentially closes the water-cooled base plate 2 and the water-cooled cover plate 1 and reserves an unclosed grounding bar installation position on one side. This solution also includes a grounding bar 10 connecting the water-cooled cover plate 1 and the water-cooled base plate 2, and the grounding bar 10 is connected to the grounding system of the prior art; through the provision of the protective plate and the grounding bar 10, it is possible to effectively prevent external pollutants, heat, dust, etc. from being transmitted to the weighing sensor 3 arranged in the middle, with better protection effect and higher detection accuracy. The grounding bar is selected from any one of the existing technologies to achieve the established purpose, prevent the influence of the induced electric symmetrical body, and improve the detection accuracy. It will not be repeated here.

[0034] In this embodiment, a circular hole 11 is provided in the center of the water-cooled cover plate 1. The pressure head 4 comprises a pressure plate and a column fixed to the bottom of the pressure plate. The diameter of the column matches the diameter of the circular hole, and the radial dimension of the pressure plate exceeds the diameter of the column. The top of the contact 31 has a load-bearing spherical surface, and the bottom of the column has a recess of the same size as the load-bearing spherical surface, so that the pressure head 4 and the contact 31 of the load cell 3 are adapted to contact and connect. The structural design of the pressure head 4 effectively protects the contact 31 and improves the detection accuracy.

[0035] This solution improves the working environment of weighing sensor 3 through peripheral water cooling protection. Its two weighing signal outputs ensure normal operation even if one signal fails. Both signals can be collected and compared during operation, using the more accurate signal to provide important reference data for precise smelting control. Two sets of buffer mechanisms are installed perpendicular to each other, effectively horizontally positioning and connecting the water-cooled cover plate 1 and water-cooled base plate 2 to prevent damage to the furnace scale caused by large horizontal shear forces, while also allowing a certain degree of vertical freedom to avoid affecting weighing accuracy. The symmetrical, multi-layer water cooling protection, the output of two weighing signals, the grounding system to eliminate induced currents, and the buffer mechanism to eliminate horizontal shear forces ensure reliable and accurate furnace weighing. This allows operators to accurately determine the amount of molten steel in the furnace, the amount of scrap added, the amount of steel tapped, and the amount of steel remaining in the furnace, thereby ensuring smooth smelting.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An electric arc furnace body weighing device, characterized in that: It includes a water-cooled cover plate, a water-cooled bottom plate, a weighing sensor, a pressure head and a buffer mechanism; The buffer mechanism includes a support rod, a water-cooled base plate connecting seat and a water-cooled cover plate connecting seat; the water-cooled base plate connecting seat is hinged to the first connecting end of the support rod, the water-cooled cover plate connecting seat is hinged to the second connecting end of the support rod, the axis of the hinged water-cooled base plate mounting seat is parallel to the axis of the hinged water-cooled cover plate connecting seat, the water-cooled base plate mounting seat is fixed on the top surface of the water-cooled base plate, and the water-cooled cover plate connecting seat is fixed on the bottom surface of the water-cooled cover plate, so that the buffer mechanism forms a connection between the water-cooled cover plate and the water-cooled base plate; The weighing sensor is arranged between the water-cooled base plate and the water-cooled cover plate, the contact of the weighing sensor is facing upward, the pressure head is driven to move up and down and is arranged in the middle of the water-cooled cover plate, and the bottom end of the pressure head is in contact with the contact so that the gravity signal is received through the up and down movement of the cover plate.

2. The electric arc furnace body weighing device according to claim 1, characterized in that: A circular hole is provided in the middle of the water-cooled cover plate. The pressure head comprises a pressing plate and a column fixed at the bottom of the pressing plate. The diameter of the column is consistent with the diameter of the circular hole, and the radial dimension of the pressing plate exceeds the diameter of the column.

3. The electric arc furnace body weighing device according to claim 2, characterized in that: The top of the contact has a bearing spherical surface, and the bottom of the column has a recess with the same size as the bearing spherical surface, so that the pressure head and the contact of the weighing sensor are adapted to contact and connect.

4. The electric arc furnace body weighing device according to claim 1, characterized in that: The buffer mechanism is composed of two groups arranged vertically between the water-cooled cover plate and the water-cooled bottom plate, and the support rods in the two groups of the buffer mechanism are "L"-shaped.

5. The electric arc furnace body weighing device according to claim 1, characterized in that: The water-cooling base plate is provided with a positioning groove for installing a weighing sensor.

6. The electric arc furnace body weighing device according to claim 1, characterized in that: An external water-cooling protective cover is provided around the weighing sensor.

7. The electric arc furnace body weighing device according to claim 1, characterized in that: The weighing sensor has at least two signal output terminals.

8. The electric arc furnace body weighing device according to claim 1, characterized in that: The water-cooling cover plate and the water-cooling bottom plate are connected via a protective plate.

9. The electric arc furnace body weighing device according to claim 1, characterized in that: It also includes a grounding bar connecting the water-cooling cover plate and the water-cooling bottom plate, wherein the grounding bar is connected to the grounding system.

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