Charging device and electric-shaft furnace charging system

Abstract

The utility model discloses a kind of feeding device and electric-shock furnace feeding system, it is related to electric-shock remelting feeding technical field, feeding device includes support device and adds slag device, and adds slag device has feed inlet and discharge port;Support device is fixed in the feed inlet outside of adding slag device, and support device has support groove;The bottom of slag disc is fixedly arranged with a rotating member, support groove can support rotating member and form rotating cooperation with rotating member, under the adjustment of hoisting equipment, slag disc can be rotated in support groove by rotating member and contact with the feed inlet of adding slag device, to make slag in slag disc pour into adding slag device, adding slag device can deliver slag to electric-shock furnace by discharge port;Electric-shock furnace feeding system includes hoisting equipment, slag disc, electric-shock furnace and feeding device, and the feeding device and electric-shock furnace feeding system can shorten operation time, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of electroslag remelting feeding technology, and in particular to a feeding device and an electroslag furnace feeding system. Background Technology

[0002] Electroslag remelting (ESR) is a secondary refining process in which consumable electrodes are embedded in molten slag, and the heat generated by electricity melts the molten steel, which then solidifies again through the slag layer. The slag plays a crucial role in this process, serving not only as the primary heat provider but also in purifying the molten steel by removing inclusions and protecting it from atmospheric contamination.

[0003] Existing patent (CN222205372U) discloses an electroslag furnace feeder. This device requires operators to add materials into the hopper multiple times in succession, resulting in low operating efficiency. It is also prone to delays in feeding due to operator fatigue, which prolongs the exposure time of the material to the air and exacerbates the absorption of moisture from the air by the material to form water of crystallization. When these materials containing water of crystallization enter the furnace, the decomposition of moisture will cause a sharp increase in the hydrogen content in the molten steel, which in turn leads to a large number of porosity defects in the electroslag ingot. Utility Model Content

[0004] The purpose of this utility model is to provide a feeding device and an electroslag furnace feeding system to solve the problems existing in the prior art, shorten the operation time, and improve production efficiency.

[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides a feeding device, including a support device and a slag feeding device. The slag feeding device has a feed inlet and a discharge outlet. The support device is fixed outside the feed inlet of the slag feeding device and has a support groove. A rotating component is fixedly provided at the bottom of the slag pan. The support groove can support the rotating component and form a rotational engagement with it. Under the adjustment of the lifting equipment, the slag pan can be rotated in the support groove by the rotating component until it contacts the feed inlet of the slag feeding device, so that the slag in the slag pan is poured into the slag feeding device. The slag feeding device can transport the slag to the electroslag furnace through the discharge outlet.

[0006] In some embodiments, the support devices are in two sets and symmetrically arranged on both sides of the slag pan. Each support device has a support groove, and both ends of the rotating member can extend into the two support grooves respectively and can move synchronously along the support grooves.

[0007] In some embodiments, the support groove extends through the support device and communicates with the outside, the inlet diameter of the support groove is larger than the bottom diameter, the inner wall of the support groove is a smooth plane, and the slag pan can extend into the support groove from above and slide along the inner wall of the support groove to the bottom of the support groove.

[0008] In some embodiments, the support device further includes a support frame, one end of which is fixedly connected to the bottom of the support groove, and the other end is fixedly connected to the slag feeding device.

[0009] In some embodiments, a receiving hopper is also included, which is fixedly disposed at the inlet of the slag feeding device, and the outlet of the receiving hopper is connected to the inlet of the slag feeding device. The slag feeding device can provide power for conveying slag to the electroslag furnace.

[0010] In some embodiments, a receiving tray is also included, which is fixedly disposed above the receiving hopper. The receiving tray is used to receive the slag poured from the slag tray, and the discharge port of the receiving tray corresponds vertically to the inlet of the receiving hopper, so that the slag can flow from the receiving tray to the receiving hopper.

[0011] In some embodiments, both the slag tray and the slag feeding device are made of 304 stainless steel.

[0012] In some embodiments, both the support device and the support frame are made of Q235 carbon structural steel.

[0013] In some embodiments, the rotating component is a rotating shaft that can move within the support groove and drive the slag disc to rotate.

[0014] This utility model also provides an electroslag furnace feeding system, including a lifting device, a slag pan, an electroslag furnace, and the feeding device described in any one of the above. The slag pan can be placed in the heating furnace to be heated and to support the slag. The lifting device is used to lift the heated slag pan and place it in the support groove. The present invention achieves the following technical advantages over the prior art: This utility model provides a feeding device and an electroslag furnace feeding system. By setting up a support device and a slag feeding device, the support groove of the support device forms a rotating engagement with the rotating part at the bottom of the slag pan. The slag is directly loaded into the slag pan, and the lifting equipment can directly lift the slag pan to the support groove, eliminating the need to transfer the slag to intermediate components such as a storage silo. This reduces the time spent on slag transfer, shortens the heating time, and can extend the smelting cycle of the electroslag furnace, indirectly improving the production efficiency of the equipment. Simultaneously, the slag pan also provides insulation for the slag, reducing heat loss during lifting, docking, and unloading, and lowering the efficiency of the electroslag furnace. The system addresses the heat compensation requirements within the slag furnace, reducing production costs. When adjusting the slag pan with the lifting equipment, the pan rotates smoothly around the support groove and precisely aligns with the feed inlet of the slag feeding device. Furthermore, during unloading, operators do not need to come into close contact with the high-temperature slag pan; feeding can be completed remotely via the lifting equipment, thus avoiding safety accidents such as burns from high temperatures or injuries from flying slag. In addition, the feeding process does not require additional complex drive mechanisms; the feeding action of the slag pan can be completed simply by adjusting the rotating parts with the lifting equipment, reducing the operational difficulty and labor intensity of the feeding operation and improving feeding efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the feeding device structure in one embodiment of the present invention; Figure 2 This is a schematic diagram of the slag pan structure in one embodiment of the present invention.

[0017] Wherein: 1-Slag tray; 2-Support device; 3-Support frame; 4-Receiving tray; 5-Receiving hopper; 6-Slag feeding device; 7-Rotating shaft. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1 This embodiment provides a feeding device, such as... Figure 1-2 As shown, the device includes a support device 2 and a slag-adding device 6. The slag-adding device 6 has a feed inlet and a discharge outlet. The support device 3 is fixed outside the feed inlet of the slag-adding device 6, and the support device 2 has a support groove. A rotating component is fixedly installed at the bottom of the slag pan 1. The support groove can support the rotating component and form a rotational engagement with it. Under the adjustment of the lifting equipment, the slag pan 1 can rotate within the support groove through the rotating component until it contacts the feed inlet of the slag-adding device 6, so that the slag in the slag pan 1 is poured into the slag-adding device 6. The slag-adding device 6 can then transport the slag through the discharge outlet into the electroslag furnace. In this embodiment, by setting up the support device 2 and the slag-adding device 6, the support groove of the support device 2 forms a rotational engagement with the rotating component at the bottom of the slag pan 1, and the slag is directly filled into the slag pan 1. The lifting equipment can directly lift the slag pan 1 to the support groove without first transferring the slag to intermediate components such as a storage silo. Reducing slag transfer time and shortening heating time can extend the smelting cycle of the electroslag furnace, indirectly improving equipment production efficiency. Simultaneously, the slag pan 1 also provides insulation for the slag, reducing heat loss during hoisting, docking, and unloading, thus lowering the heat compensation requirements within the electroslag furnace and reducing production costs. When adjusting the slag pan 1, the lifting equipment allows it to rotate smoothly around the support groove and precisely dock with the inlet of the slag feeding device 6. Furthermore, during unloading, operators do not need to be in close contact with the high-temperature slag pan 1; feeding can be completed remotely via the lifting equipment, thus avoiding safety accidents such as burns from high temperatures and injuries from slag splashes. Additionally, the feeding process does not require a complex drive mechanism; the feeding action of the slag pan 1 can be completed simply by adjusting the rotating parts of the lifting equipment, reducing the operational difficulty and labor intensity of the feeding operation and improving feeding efficiency.

[0021] In some embodiments of this example, the support devices 2 are in two sets and symmetrically arranged on both sides of the slag pan 1. Each support device 2 has a support groove, and the two ends of the rotating part can respectively extend into the two support grooves and move synchronously along the support grooves. The two sets of support devices 2 are symmetrically arranged on both sides of the slag pan 1, and the two ends of the rotating part respectively extend into the corresponding support grooves, which can form a double-sided symmetrical support for the slag pan 1, avoiding the problem of center of gravity shift caused by single-sided support. During the rotation and unloading process of the slag pan 1, the constraint force of the support grooves on both sides on the rotating part is uniform, effectively preventing the slag pan 1 from tilting, jamming or shaking, ensuring a smooth and stable rotation process, and ensuring unloading safety.

[0022] In some embodiments of this example, the support groove penetrates the support device 2 and communicates with the outside. The inlet diameter of the support groove is larger than the bottom diameter, and the inner wall of the support groove is a smooth plane. The slag pan 1 can extend into the support groove from the top and slide along the inner wall of the support groove to the bottom of the support groove. The support groove penetrates the support device 2 and the inlet diameter is larger than the bottom diameter, forming a guide structure that is wider at the top and narrower at the bottom. When the lifting equipment lifts the slag pan 1, it does not require extremely high alignment accuracy. It can quickly slide into the support groove and move to the bottom of the groove by means of the rotating part along the flared inner wall of the support groove. This greatly shortens the operation time of lifting and docking, reduces the difficulty of lifting and docking the slag pan 1, and improves the convenience of operation.

[0023] In some embodiments of this example, the support device 2 further includes a support frame 3. One end of the support frame 3 is fixedly connected to the bottom of the support trough, and the other end is fixedly connected to the slag feeding device 6. The support frame 3 rigidly positions the support trough and the slag feeding device 6, eliminating the relative displacement deviation between the two. During the rotation and unloading process of the slag pan 1, the support trough always maintains a precise alignment with the feed inlet of the slag feeding device 6, avoiding docking offset caused by vibration and load changes, ensuring that all slag can be poured into the slag feeding device 6, and preventing raw material waste.

[0024] In some embodiments of this example, the feeding device further includes a receiving hopper 5, which is fixedly installed at the inlet of the slag feeding device 6, and the outlet of the receiving hopper 5 is connected to the inlet of the slag feeding device 6. The slag feeding device 6 can provide power for conveying slag to the electroslag furnace. The slag feeding device 6 adopts a spiral feeding shaft with equal pitch and equal diameter. The volume of slag pushed by the spiral shaft is constant per revolution. After the slag falls from the receiving hopper 5 into the sealed chamber formed by the spiral feeding shaft and the wear-resistant bushing, it will move smoothly along the axial direction with the rotation of the spiral blades. At the same time, the spiral feeding... The feeding shaft is driven by a motor. Operators can control the motor speed according to the requirements of the electroslag furnace smelting process, thereby precisely controlling the amount of slag conveyed per unit time and adjusting the feeding rate. In addition, a flow monitoring sensor is equipped at the end of the discharge pipe, which can collect slag output rate data in real time and feed it back to the controller. If the actual feeding rate deviates from the preset value, the controller will automatically adjust the motor frequency to correct the speed, ensuring that the feeding rate is always stable within the preset range. Ultimately, this achieves precise, continuous, and uniform slag feeding, ensuring the stability of the electroslag furnace smelting process.

[0025] In some embodiments of this example, the feeding device further includes a receiving tray 4. The receiving tray 3 is fixedly disposed above the receiving hopper 5. The receiving tray 4 is used to receive the slag tray 1. The slag is poured out and the discharge port of the receiving tray 3 corresponds vertically to the inlet of the receiving hopper 5. The slag can flow from the receiving tray 4 to the receiving hopper 5. When the slag tray 1 pours out the slag, it will generate a certain impact load. After the receiving tray 4 receives the slag, it can disperse the impact force, avoid the high temperature slag directly impacting the inlet of the slag feeding device 6, causing wear, deformation or cracking, and extend the service life of the slag feeding device 6.

[0026] In some embodiments of this example, both the slag pan 1 and the slag feeding device 6 are made of 304 stainless steel. The outer shell of the slag feeding device 6 is made of 304 stainless steel. 304 stainless steel can withstand the continuous thermal shock of high-temperature slag during the electroslag furnace smelting process and will not deform, soften, or crack due to high temperature. At the same time, the corrosive components such as oxides and sulfides often contained in the slag, as well as the water vapor and dust in the workshop environment, are unlikely to cause corrosion to 304 stainless steel. This avoids the problem of shortened equipment life caused by the easy rusting and wear of traditional carbon steel materials, and ensures the long-term stable operation of the device.

[0027] In some embodiments of this example, both the support device 2 and the support frame 3 are made of Q235 carbon structural steel. Q235 carbon structural steel has high yield strength and tensile strength, which can stably bear the weight load of the slag pan 1 and the high-temperature slag, as well as the torque and impact stress generated when the slag pan 1 rotates and unloads. This avoids deformation, breakage or sinking of the support device 2 and the support frame 3. At the same time, it has good plasticity and toughness, and is not easy to break under heavy load conditions, thus ensuring the long-term reliable operation of the support system.

[0028] In some embodiments of this example, the rotating component is a rotating shaft 7, which can move within the support groove and drive the slag disk 1 to rotate. The rotating shaft 7 has a cylindrical structure and a high degree of fit with the support groove. During the rotation process, there will be no radial offset, ensuring that the slag disk 1 and the receiving hopper 5 are accurately connected and preventing slag from spilling.

[0029] Example 2 This embodiment provides an electroslag furnace charging system, including a lifting device, a slag pan 1, an electroslag furnace, and a charging device according to any one of the embodiments. The slag pan 1 can be placed in the heating furnace to be heated and to carry slag. The lifting device is used to lift the heated slag pan 1 and place it in a support groove. A lifting lug is provided above the slag pan 1 for lifting by the lifting device. In this embodiment, by setting a support device 2 and a slag charging device 6, the support groove of the support device 2 and the rotating part at the bottom of the slag pan 1 form a rotational engagement, allowing the slag to be directly contained in the slag pan 1. The lifting device can directly lift the slag pan 1 to the support groove without first transferring the slag to intermediate components such as a storage silo, reducing the slag transfer time, shortening the heating time, increasing the smelting cycle of the electroslag furnace, and indirectly improving the equipment's performance. In addition to improving production efficiency, the slag pan 1 also serves to insulate the slag, reducing heat loss during hoisting, docking, and unloading, thus lowering the heat compensation requirements within the electroslag furnace and reducing production costs. When the lifting equipment adjusts the slag pan 1, it rotates smoothly around the support groove and precisely docks with the inlet of the slag feeding device 6. Furthermore, during unloading, operators do not need to come into close contact with the high-temperature slag pan 1; feeding can be completed remotely through the lifting equipment, thereby avoiding safety accidents such as burns from high temperatures or injuries from flying slag. In addition, the feeding process does not require an additional complex drive mechanism; the feeding action of the slag pan 1 can be completed simply by adjusting the rotating parts through the lifting equipment, reducing the operational difficulty and labor intensity of the feeding operation and improving feeding efficiency.

[0030] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A feeding device, characterized in that: It includes a support device and a slag feeding device, wherein the slag feeding device has a feed inlet and a discharge outlet; The support device is fixed outside the feed inlet of the slag feeding device, and the support device has a support groove; A rotating component is fixedly installed at the bottom of the slag pan. The support groove can support the rotating component and form a rotational engagement with it. Under the adjustment of the lifting equipment, the slag pan can be rotated in the support groove by the rotating component until it contacts the feed port of the slag feeding device, so that the slag in the slag pan is poured into the slag feeding device. The slag feeding device can transport the slag to the electroslag furnace through the discharge port.

2. The feeding device according to claim 1, characterized in that: The support device consists of two sets symmetrically arranged on both sides of the slag pan. Each support device has a support groove. The two ends of the rotating part can respectively extend into the two support grooves and can move synchronously along the support grooves.

3. The feeding device according to claim 2, characterized in that: The support groove passes through the support device and communicates with the outside. The inlet diameter of the support groove is larger than the bottom diameter. The inner wall of the support groove is a smooth plane. The slag plate can extend into the support groove from the top and slide along the inner wall of the support groove to the bottom of the support groove.

4. The feeding device according to claim 1, characterized in that: The support device also includes a support frame, one end of which is fixedly connected to the bottom of the support trough, and the other end is fixedly connected to the slag feeding device.

5. The feeding device according to claim 1, characterized in that: It also includes a receiving hopper, which is fixedly installed at the inlet of the slag feeding device, and the outlet of the receiving hopper is connected to the inlet of the slag feeding device. The slag feeding device can provide power for transporting slag to the electroslag furnace.

6. The feeding device according to claim 5, characterized in that: It also includes a receiving tray, which is fixedly installed above the receiving hopper. The receiving tray is used to receive the slag poured from the slag tray, and the discharge port of the receiving tray corresponds vertically to the inlet of the receiving hopper, so that the slag can flow from the receiving tray to the receiving hopper.

7. The feeding device according to claim 1, characterized in that: Both the slag tray and the slag feeding device are made of 304 stainless steel.

8. The feeding device according to claim 4, characterized in that: Both the support device and the support frame are made of Q235 carbon structural steel.

9. The feeding device according to claim 1, characterized in that: The rotating component is a rotating shaft, which can move within the support groove and drive the slag disc to rotate.

10. A feeding system for an electroslag furnace, characterized in that: The device includes a lifting device, a slag pan, an electroslag furnace, and a feeding device as described in any one of claims 1-9. The slag pan can be placed in a heating furnace to be heated and to carry slag. The lifting device is used to lift the heated slag pan and place it in the support groove.

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