Electric arc furnace body weighing device

Abstract

The utility model discloses an electric arc furnace body weighing device, which comprises a water cooling box body, a top shaft or a copper sleeve, a first insulating part, a weighing sensor, a second insulating part, a movable protective cover and a heat insulation layer, the first insulating part is arranged on a bottom plate, the weighing sensor is arranged on the first insulating part, and a detection end of the weighing sensor penetrates through the top shaft and extends out of the water cooling box body; the second insulating part is fixed at the end part of the detection end, and the movable shield is arranged on the outer side of the water cooling box body; and the heat insulation layer is arranged between the movable shield and the water cooling box body. Wherein the movable shield and the heat insulation layer serve as a first layer of protection, dust and heat radiation are effectively prevented, the water-cooling box body serves as a second layer of water-cooling heat insulation protection, the first insulation part can prevent the sensor from being damaged by induced electricity and electrostatic current during smelting, and the jacking shaft or the copper sleeve reduces the damage of transverse force to the sensor in the tilting process of the furnace body. Therefore, the weighing device has the advantages of being simple in overall structure, good in weighing stabilizing effect and convenient to maintain.

Description

Technical Field

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

[0002] For a 100t Considy electric arc furnace, furnace weighing is extremely critical to smelting operations and cost control. Usually, the furnace weighing module is placed between the furnace shell and the tilting platform. The furnace weighing module in the prior art includes a water-cooled box, an upper water-cooled cover plate, and a 250t sensor. The sensor is installed inside the water-cooled box, and the upper part of the sensor is a water-cooled cover plate. As the existing furnace weighing module is not perfect, the weighing instability failure rate is high.

[0003] The existing furnace weighing module has the following main disadvantages:

[0004] The water-cooling box and the water-cooling cover are separate, and the lateral force generated by the furnace during the tilting process can cause serious damage to the sensor.

[0005] The sensor was not insulated during installation, and the induced electricity and electrostatic current generated during smelting would cause damage to the sensor diameter;

[0006] Affected by the on-site environment, there is a lot of dust and high temperature. The split water-cooling box cannot reliably block dust and high-temperature radiation, resulting in unstable weighing and high damage rate of the sensor;

[0007] The water-cooling box and the upper water-cooling cover are split, and need to be supplied with water separately. Many water pipes are frequently damaged during production, affecting cooling;

[0008] The weight of the furnace body and furnace cover plus the weight of the scrap steel loaded, the 250t sensor is designed to be small. When the furnace body is tilted to discharge steel, the weight is unbalanced and some parts of the sensor are subjected to excessive force, which will cause damage;

[0009] The water-cooling box structure is welded on four sides. When replacing the sensor, it cannot be replaced separately. The furnace shell needs to be replaced, which takes a long time and is not conducive to maintenance.

[0010] The above-mentioned drawbacks are the main reasons for the instability and damage of the existing furnace weighing module, which have a great impact on smelting operations and cost control, cannot meet the production needs of enterprises, and must be improved. Utility Model Content

[0011] In view of the above-mentioned deficiencies, the technical problem to be solved by the utility model is: to provide an electric arc furnace body weighing device, which has the advantages of stable weighing, reduced failure rate, good long-term use effect, facilitating smelting operations and reasonably controlling costs.

[0012] In order to solve the above technical problems, the technical solution of the utility model is:

[0013] An arc furnace body weighing device comprises: a water-cooling box, the water-cooling box comprises a cover plate and a bottom plate, an opening is arranged in the middle of the cover plate; a top shaft or a copper sleeve, the top shaft or the copper sleeve is installed at the opening; a first insulating member, the first insulating member is arranged on the top of the bottom plate; a weighing sensor, the weighing sensor is arranged in the water-cooling box, and the weighing sensor is arranged on the top of the first insulating member, and the detection end of the weighing sensor passes through the top shaft or the copper sleeve and extends out of the water-cooling box; a second insulating member, the second insulating member is fixed to the end of the detection end; a movable shield, the movable shield is arranged on the outside of the water-cooling box, the movable shield has an avoidance through hole, and the avoidance through hole is arranged on the outer periphery of the second insulating member; a heat insulating layer, the heat insulating layer is arranged between the movable shield and the water-cooling box.

[0014] Preferably, the thermal insulation layer is thermal insulation fiber felt.

[0015] Preferably, the outer surface of the top end of the movable shield is arranged flush with the outer side of the second insulating member.

[0016] Preferably, the second insulating member is a disc.

[0017] Preferably, a mounting groove is provided on the bottom plate, and the first insulating member is provided in the mounting groove.

[0018] Preferably, the water-cooling box and the movable shield are fixedly connected by fasteners.

[0019] After adopting the above technical solution, the beneficial effects of the utility model are:

[0020] The electric arc furnace body weighing device of the utility model comprises a water-cooling box, a top shaft or a copper sleeve, a first insulating member, a weighing sensor, a second insulating member, a movable shield and a heat-insulating layer, wherein the water-cooling box comprises a cover plate and a bottom plate, an opening is arranged in the middle of the cover plate; the top shaft is installed at the opening; the first insulating member is arranged on the top of the bottom plate; the weighing sensor is arranged in the water-cooling box, and the weighing sensor is arranged on the top of the first insulating member, and the detection end of the weighing sensor passes through the top shaft and extends out of the water-cooling box; the second insulating member is fixed to the end of the detection end; the movable shield is arranged on the outside of the water-cooling box, and the movable shield has an avoidance through hole, and the avoidance through hole is arranged on the outer periphery of the second insulating member; the heat-insulating layer is arranged between the movable shield and the water-cooling box. When in use, the movable shield and the heat insulation layer serve as the first layer of protection for the weighing sensor, effectively preventing dust and heat radiation. The water-cooled box is the second layer of water-cooled heat insulation protection for the weighing sensor. The first insulating member can prevent the damage to the sensor caused by induced electricity and electrostatic current during smelting. The top shaft or copper sleeve reduces the damage to the sensor caused by the lateral force of the furnace during the tilting process. It can be seen that the utility model has the advantages of simple overall structure, good weighing stability, and convenient maintenance. The water-cooled box can be replaced online separately, and the weighing sensor can also be replaced separately, meeting different usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the electric arc furnace body weighing device in the utility model;

[0022] Figure 2 It is a top view of the electric arc furnace body weighing device in the utility model;

[0023] Figure 3 It is a structural schematic diagram of the arc furnace body weighing device in the utility model in the use state;

[0024] In the figure: 1- movable shield, 2- heat-insulating fiber felt, 3- water-cooling box, 4- weighing sensor, 5- top shaft or copper sleeve, 60- first insulating member, 61- second insulating member, 7- electric arc furnace body weighing device, 8- tilting platform, 9- furnace shell. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0027] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0028] like Figure 1 and Figure 2 As shown, an arc furnace body weighing device 7 includes a water-cooled box 3, a top shaft or a copper sleeve 5, a first insulating member 60, a weighing sensor 4, a second insulating member 61, a movable shield 1 and a heat insulation layer.

[0029] The water-cooling box body 3 includes a cover plate and a bottom plate. An opening is arranged in the middle of the cover plate, and a top shaft or a copper sleeve 5 is arranged at the opening. A mounting groove is arranged on the bottom plate, and a first insulating member 60 is arranged in the mounting groove.

[0030] The weighing sensor 4 is arranged in the water-cooling box 3, and the weighing sensor 4 is arranged on the first insulating member 60. The detection end of the weighing sensor 4 passes through the top shaft and extends out of the water-cooling box 3. The weighing sensor 4 can select a 350t sensor.

[0031] The second insulating member 61 is fixed at the end of the detection end; in this embodiment, the second insulating member 61 is a disc.

[0032] The movable shield 1 is disposed on the outside of the water-cooling housing 3, and has an escape through hole, which is disposed on the outer periphery of the second insulating member 61. In this embodiment, the outer surface of the top end of the movable shield 1 is flush with the outer side of the second insulating member 61. Specifically, the water-cooling housing 3 and the movable shield 1 are fixedly connected by fasteners, which may include bolts and nuts, and threaded holes disposed on the movable shield 1.

[0033] The thermal insulation layer is arranged between the movable shield 1 and the water-cooled box 3. In a preferred embodiment, the thermal insulation layer is a thermal insulation fiber felt 2. The thermal insulation fiber felt 2 serves as the first layer of protection for the weighing sensor 4, effectively preventing dust and heat radiation, protecting the weighing sensor 4 and ensuring its service life.

[0034] like Figure 3 As shown, according to the existing furnace shell 9 being divided into four weighing points, the protruding part of the lower rib plate of the furnace shell 9 is reinforced as a weighing force point, that is, an electric arc furnace body weighing device 7 of the utility model is arranged at each weighing force point, and the four electric arc furnace body weighing devices 7 are further arranged on the tilting platform 8.

[0035] The electric arc furnace weighing device 7 of the utility model has a movable shield 1 and a heat insulation layer as the first layer of protection for the weighing sensor 4, which effectively prevents dust and heat radiation. The water-cooled box 3 is the second layer of water-cooled heat insulation protection for the weighing sensor 4. The first insulating member 60 can prevent the sensor from being damaged by induced electricity and electrostatic current during smelting. The top shaft or copper sleeve 5 reduces the damage to the sensor caused by the lateral force of the furnace body during the tilting process. It can be seen that the utility model has the advantages of simple overall structure, good weighing stability, and convenient maintenance. The water-cooled box 3 can be replaced online separately, and the weighing sensor 4 can also be replaced separately, meeting different usage requirements.

[0036] The technical problem to be solved by the utility model is that due to the furnace weighing design, sensors are installed inside the external water-cooling box 3 and the water-cooling cover. Since the external water-cooling box 3 and the water-cooling cover do not have the effect of dustproof and heat insulation, and do not reduce the lateral force of the furnace body tilting, weighing failures are frequent and serious damage occurs, which seriously restricts the control of smelting operation costs.

[0037] The utility model realizes better furnace body weighing stability, effectively solves the unfavorable factors for the use of sensors such as dust and heat insulation, induced electricity and electrostatic current, lateral force, etc.; provides a reliable, stable, and low-failure-rate electric arc furnace body weighing module. The modified furnace body weighing module can achieve weighing stability and reduce failure rate by solving thermal insulation protection, water cooling, insulation, and furnace body lateral force. It has a good effect after long-term use and is helpful for smelting operation and cost control.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications made within the spirit and principle of the present invention, improvements to the weighing device of an electric arc furnace, etc., should be included in the protection scope of the present invention.

Claims

1. An arc furnace body weighing device, characterized in that: include: A water-cooling box, the water-cooling box comprising a cover plate and a bottom plate, and an opening is provided in the middle of the cover plate; A top shaft or a copper sleeve, wherein the top shaft or the copper sleeve is installed at the opening; A first insulating member, wherein the first insulating member is disposed on the bottom plate; A weighing sensor, wherein the weighing sensor is disposed in the water-cooling box and is disposed on the first insulating member, and a detection end of the weighing sensor passes through the top shaft or the copper sleeve and extends out of the water-cooling box; a second insulating member, the second insulating member being fixed to an end portion of the detection end; A movable shield, the movable shield is arranged on the outside of the water-cooling box, the movable shield has an avoidance through hole, and the avoidance through hole is arranged on the outer periphery of the second insulating member; A heat insulation layer is provided between the movable shield and the water-cooling box.

2. The electric arc furnace body weighing device according to claim 1, characterized in that: The heat insulation layer is a heat insulation fiber felt.

3. The electric arc furnace body weighing device according to claim 1, characterized in that: The top outer surface of the movable shield is arranged flush with the outer side of the second insulating member.

4. The electric arc furnace body weighing device according to claim 1, characterized in that: The second insulating member is a disk.

5. The electric arc furnace body weighing device according to claim 1, characterized in that: The bottom plate is provided with a mounting groove, and the first insulating member is arranged in the mounting groove.

6. The electric arc furnace body weighing device according to claim 1, characterized in that: The water cooling box and the movable shield are fixedly connected by fasteners.

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