Slag charging device of electroslag furnace

Abstract

The utility model relates to the technical field of slag charge adding, and discloses an electroslag furnace slag charge adding device which comprises a supporting frame, an overhead bunker, a spiral conveying structure and a controller. The high-position material bin is arranged on the supporting frame, and a weighing sensor is arranged in the high-position material bin. The spiral conveying structure comprises a spiral conveying body and a variable-frequency motor, the feeding end of the spiral conveying body is connected with a discharging opening in the bottom of the overhead stock bin, and the variable-frequency motor is arranged on the supporting frame and connected with the spiral conveying body; and the controller is connected with the weighing sensor, the discharge valve and the variable-frequency motor. According to the slag feeding device, the conveying mode of the slag can be adjusted according to different field feeding process requirements, constant-speed feeding with the adjustable speed or quantitative feeding at the interval time is selected, the slag feeding mode is more flexible and controllable, and the diversified slag feeding requirements are met.

Description

Technical Field

[0001] This application relates to the field of slag addition technology, for example to a slag addition device for an electroslag furnace. Background Technology

[0002] Electroslag remelting is a special metallurgical method that uses the resistance heat generated when an electric current passes through molten slag in a water-cooled crystallizer to remelt and refine metals or alloys, and then sequentially solidify them into steel ingots or castings. It is the final smelting process for preparing high-end special steels and special alloys. The slag in electroslag remelting is the key to the smelting process. The metal or alloy enters the slag pool from above and undergoes a series of important remelting processes such as heating, melting, refining and superheating in the slag pool. Therefore, it is very important to quickly form a uniform slag pool.

[0003] Currently, the slag addition method in electroslag remelting is relatively simple, mostly using conveyor belts and controlling their uniform speed to continuously add slag into the bin. It is impossible to achieve speed adjustment control, and the slag addition mode selection cannot be adjusted according to the existing situation to achieve quantitative and timed uniform addition mode switching.

[0004] Therefore, it is evident that how to adjust the conveying mode of slag according to different on-site feeding process requirements to meet diverse slag addition needs is a technical problem that urgently needs to be solved by those skilled in the art.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0007] This disclosure provides an electroslag furnace slag feeding device that can adjust the slag feeding mode according to different on-site feeding process requirements, and select adjustable rate uniform feeding or interval quantitative feeding, making the slag feeding method more flexible and controllable, and meeting diverse slag feeding needs.

[0008] In some embodiments, the slag feeding device for an electroslag furnace includes: a support frame, an elevated silo, a screw conveyor structure, and a controller. The elevated silo is mounted on the support frame and contains a weighing sensor. A discharge port and a discharge valve for controlling the opening and closing of the discharge port are located at the bottom of the elevated silo. The screw conveyor structure includes a screw conveyor body and a variable frequency motor. The inlet end of the screw conveyor body is connected to the discharge port at the bottom of the elevated silo. The variable frequency motor is mounted on the support frame and connected to the screw conveyor body, used to drive the screw conveyor body to convey materials and adjust the conveying speed of the screw conveyor body. The controller is connected to the weighing sensor, the discharge valve, and the variable frequency motor, used to adjust the conveying mode of the slag material by controlling the weighing sensor, the discharge valve, and the variable frequency motor.

[0009] Optionally, the high-level silo is divided by a support frame into a first silo with a cylindrical structure and a second silo with a conical structure, wherein the side slope of the second silo is greater than or equal to 60° and less than or equal to 70°.

[0010] Optionally, a vibrator is provided on the side of the second compartment.

[0011] Optionally, the support frame includes a support platform and support legs. The support platform has a rectangular structure; there are multiple support legs, each positioned at one corner of the support platform, and each support leg is a telescopic structure.

[0012] Optionally, the support platform is provided with assembly holes, and the high-level silo is movably installed in the assembly holes of the support platform through a guide positioning structure.

[0013] Optionally, the screw conveyor includes: a conveying cylinder and a transverse auger. The conveying cylinder is horizontally arranged, with one end of its side being the inlet and the other end being the outlet. The inlet of the conveying cylinder is connected to the discharge port at the bottom of the high-level silo. The transverse auger is arranged inside the conveying cylinder and is made of a spiral rod with a helix angle of 35°.

[0014] Optionally, the discharge end of the conveying cylinder is connected to a discharge pipe, and the discharge pipe has a V-shaped structure with two discharge ports.

[0015] Optionally, the slag feeding device for the electroslag furnace also includes a control panel, which is equipped with an emergency stop control button.

[0016] Optionally, a vertical ladder is provided on the support frame.

[0017] Optionally, a level detector is also installed in the high-level silo.

[0018] The electroslag furnace slag feeding device provided in this embodiment can achieve the following technical effects:

[0019] By controlling the weighing sensor, the slag material can be weighed, which facilitates the control of quantitative feeding, ensures that the feeding accuracy meets the requirements, and realizes functions such as weight feedback, weight zeroing, and calibration. By controlling the variable frequency motor to adjust the conveying speed of the screw conveyor, the slag addition rate can be adjusted. Thus, the conveying mode of the slag material can be adjusted according to different on-site feeding process requirements, and the slag material can be added at a constant speed or at intervals. The slag material addition method is more flexible and controllable, meeting diverse slag material addition needs.

[0020] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0021] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0022] Figure 1 This is a schematic diagram of the structure of an electroslag furnace slag feeding device provided in an embodiment of this disclosure;

[0023] Figure 2 This is a schematic diagram of the controller provided in an embodiment of this disclosure;

[0024] Figure 3 This is a schematic diagram of the structure of the lifting ring provided in the embodiments of this disclosure;

[0025] Figure 4 This is a schematic diagram of the structure of the high-level silo provided in the embodiments of this disclosure;

[0026] Figure 5 This is a schematic diagram of the guiding and positioning structure provided in the embodiments of this disclosure;

[0027] Figure 6 This is a schematic diagram of the spiral conveyor structure provided in the embodiments of this disclosure;

[0028] Figure 7 This is a schematic diagram of the structure of the shock absorber provided in the embodiments of this disclosure;

[0029] Figure 8 This is a schematic diagram of another electroslag furnace slag feeding device provided in an embodiment of this disclosure.

[0030] Figure label:

[0031] 100. Support frame; 101. Support platform; 102. Support leg; 103. Assembly hole; 104. Guide positioning structure; 105. Control panel; 106. Emergency stop control button; 107. Vertical ladder; 108. Lifting ring; 109. Lockable caster wheel; 110. Moving seat; 111. Guide positioning block; 112. Assembly platform; 113. Shock absorber; 200. High-level hopper; 201. Weighing sensor; 202. Discharge port; 203. Unloading valve; 204. First compartment; 205. Second compartment; 206. Vibrator; 207. Material level detector; 208. Electric gate; 300. Screw conveyor structure; 301. Screw conveyor body; 302. Variable frequency motor; 303. Conveying cylinder; 304. Horizontal auger; 305. Discharge pipe; 400. Controller. Detailed Implementation

[0032] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0033] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0034] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0035] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0036] Unless otherwise stated, the term "multiple" means two or more.

[0037] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0038] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0040] Combination Figure 1-3 As shown in the figure, this disclosure provides an electroslag furnace slag feeding device, including: a support frame 100, a high-level silo 200, a screw conveyor structure 300 and a controller 400. A high-level silo 200 is mounted on a support frame 100. A weighing sensor 201 is installed inside the high-level silo 200, and a discharge port 202 and a discharge valve 203 for controlling the opening and closing of the discharge port 202 are provided at the bottom of the high-level silo 200. The screw conveyor structure 300 includes a screw conveyor body 301 and a variable frequency motor 302. The inlet end of the screw conveyor body 301 is connected to the discharge port 202 at the bottom of the high-level silo 200. The variable frequency motor 302 is mounted on the support frame 100 and connected to the screw conveyor body 301, and is used to drive the screw conveyor body 301 to convey materials and adjust the conveying speed of the screw conveyor body 301. The controller 400 is connected to the weighing sensor 201, the discharge valve 203 and the variable frequency motor 302, and is used to adjust the conveying mode of the slag by controlling the weighing sensor 201, the discharge valve 203 and the variable frequency motor 302.

[0041] The slag feeding device for an electroslag furnace provided in this embodiment can weigh the slag by controlling the weighing sensor 201, which facilitates quantitative feeding control, ensures the feeding accuracy meets requirements, and realizes functions such as weight feedback, weight zeroing, and calibration. By controlling the variable frequency motor 302 to adjust the conveying speed of the screw conveyor 301, the slag feeding rate can be adjusted. Thus, the conveying mode of the slag can be adjusted according to different on-site feeding process requirements, and the slag feeding can be selected for uniform feeding at an adjustable rate or quantitative feeding at intervals. The slag feeding method is more flexible and controllable, meeting diverse slag feeding needs.

[0042] Optionally, the support frame 100, the elevated hopper 200, and the screw conveyor structure 300 are all made of heat-resistant stainless steel. This ensures heat resistance, allows them to withstand minor impacts without deformation, makes them sturdy and durable, and provides a strong and reliable overall structural rigidity.

[0043] Optionally, lifting rings 108 are provided on the support frame 100, and the lifting rings 108 are located on both sides of the high-level silo 200. In this way, when it is necessary to move the electroslag furnace slag feeding device, the lifting rings 108 can be used to lift the electroslag furnace slag feeding device, improving the convenience of transportation and reducing damage to the machine body.

[0044] Optionally, the slag feeding device for the electroslag furnace also includes an alarm device that issues warning messages in case of abnormal weighing or conveying. This alarm device is an audible and visual alarm. By issuing warning messages through the audible and visual alarm, operators can promptly grasp the status of the slag material and make appropriate adjustments to ensure production safety.

[0045] like Figure 4 As shown, optionally, the high-level silo 200 is divided by the support frame 100 into a first silo 204 with a cylindrical structure and a second silo 205 with a conical structure. The side slope of the second silo 205 is greater than or equal to 60° and less than or equal to 70°. This ensures that the side slope of the second silo 205 is within a reasonable range, eliminating the need for external tools and allowing the slag to fall freely into the screw conveyor 301, ensuring the stability of the feeding process. Furthermore, the overall structure is more coordinated and neat, facilitating installation while ensuring installation stability.

[0046] Optionally, a vibrator 206 is installed on the side of the second compartment 205. In this way, the vibrator 206 vibrates the side wall of the high-level hopper 200, which allows the slag to fall quickly, avoids the slag from sticking to the side wall, and further ensures the stability of the material discharge while improving the feeding efficiency.

[0047] Optionally, an electric gate 208 is provided between the first compartment 204 and the second compartment 205. The electric gate 208 is connected to a weighing sensor 201 and a uniform controller 400. Based on the weight of the slag, the electric gate 208 is used to open or close the passage between the first compartment 204 and the second compartment 205. Thus, during material feeding, when the weighing sensor 201 detects that the weight meets the requirements, it controls the electric gate 208 to close the passage between the first compartment 204 and the second compartment 205, preventing the slag from continuing to fall and keeping it stored in the first compartment 204. This ensures the accuracy of the feeding quantity and effectively reduces errors.

[0048] Optionally, the support frame 100 includes a support platform 101 and support legs 102. The support platform 101 has a rectangular structure; there are multiple support legs 102, each positioned at one corner of the support platform 101, and each support leg 102 is telescopic. This makes the overall structure of the support frame 100 more flexible, facilitating height adjustment according to usage requirements, thereby allowing slag to smoothly enter crystallizers of different sizes and meeting diverse usage needs.

[0049] Optionally, the bottom of the support leg 102 is equipped with locking casters 109. This facilitates movement while ensuring stability when placed after movement.

[0050] like Figure 5 As shown, optionally, the support platform 101 has an assembly hole 103, and the high-level hopper 200 is movably installed in the assembly hole 103 of the support platform 101 through the guide positioning structure 104. In this way, high-level hoppers 200 of different sizes can be installed and fixed, enhancing applicability, and the guide positioning structure 104 can limit the movement of the high-level hopper 200, ensuring the stability of the installation of the high-level hopper 200.

[0051] Optionally, the diameter of the mounting hole 103 is larger than the diameter of the first compartment 204. This facilitates the adjustment of the installation position of the high-level silo 200 during installation, allowing it to connect with the screw conveyor 301 below, and is suitable for installing high-level silos 200 of different sizes and specifications.

[0052] Optionally, the guide positioning structures 104 are arranged in pairs, and each guide positioning structure 104 includes a movable seat 110 and a guide positioning block 111. The movable seat 110 is slidably mounted on the support platform 101, and the guide positioning block 111 is mounted on the movable seat 110 and can be adapted to connect with the high-level hopper 200. In this way, after the high-level hopper 200 enters the assembly hole 103, the sliding movable seat 110 drives the guide positioning block 111 to move towards the high-level hopper 200, and the two opposing guide positioning blocks 111 clamp and fix the high-level hopper 200 to ensure the stability of the high-level hopper 200 installation.

[0053] like Figure 6-7 As shown, optionally, the screw conveyor 301 includes: a conveying cylinder 303 and a transverse auger 304. The conveying cylinder 303 is horizontally arranged, with one end of its side serving as the inlet and the other as the outlet. The inlet of the conveying cylinder 303 is connected to the discharge port 202 at the bottom of the high-level silo 200. The transverse auger 304 is disposed inside the conveying cylinder 303 and is made of a spiral rod with a helix angle of 35°. In this way, the screw conveying method is more stable, and it can consistently and stably convey the slag forward. Furthermore, in conjunction with the variable frequency motor 302, its conveying speed is easier to control, making it easier to operate and improving the conveying effect.

[0054] Optionally, an assembly platform 112 is provided on the support frame 100, and the assembly platform 112 is located below the high-level silo 200. The screw conveyor 301 is installed on the assembly platform 112, and a shock absorber 113 is provided on the assembly platform 112. This makes the installation of the screw conveyor 301 more stable and enables efficient conveying of slag.

[0055] Optionally, the discharge end of the conveying cylinder 303 is connected to a discharge pipe 305, and the discharge pipe 305 has a V-shaped structure with two discharge ports. This allows the discharged slag to be more dispersed, preventing slag from piling up, and making the discharge more stable and rapid, thus improving the discharge effect.

[0056] Optionally, the discharge pipe 305 can be made of stainless steel or a plastic flexible hose. Stainless steel is relatively hard and not easily deformed, ensuring the stability of the discharge, while plastic flexible hose has better elasticity, is easy to deform, and facilitates adjustment of the discharge direction.

[0057] Optionally, one of the discharge ports of the discharge pipe 305 is made of stainless steel, while the other corresponding part is a plastic flexible hose, with the portion connecting to the conveying cylinder 303 made of stainless steel. This ensures stable efficiency while allowing for flexible adjustment of the discharge direction according to discharge requirements.

[0058] like Figure 8As shown, optionally, the electroslag furnace slag feeding device also includes a control panel 105, on which an emergency stop control button 106 is provided. In this way, all operations can be performed via buttons on the control panel 105, making operation more convenient, and the emergency stop control button 106 ensures operational safety.

[0059] Optionally, a vertical ladder 107 is provided on the support frame 100. In this way, by installing the vertical ladder 107, the operator can easily observe the specific situation of the slag in the high-level silo 200 and make timely adjustments.

[0060] Optionally, a level detector 207 is also installed inside the high-level silo 200. This allows the level detector 207 to monitor the discharge of slag within the high-level silo 200 without requiring the operator to climb to the top of the support frame 100 for observation, ensuring operational safety, reducing labor intensity, and providing a more intelligent detection method that guarantees reliable results. This allows operators to make appropriate adjustments based on the specific slag conditions within the high-level silo 200, contributing to an orderly and stable feeding process.

[0061] Understandably, the level detector 207 is an image recognition camera. Image recognition cameras are existing technology, and their specific structure will not be described in detail here.

[0062] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A slag feeding device for an electroslag furnace, characterized in that, include: Support frame (100); A high-level silo (200) is set on a support frame (100). A weighing sensor (201) is installed inside the high-level silo (200). A discharge port (202) and a discharge valve (203) for controlling the opening or closing of the discharge port (202) are set at the bottom of the high-level silo (200). The screw conveyor structure (300) includes a screw conveyor body (301) and a variable frequency motor (302). The feed end of the screw conveyor body (301) is connected to the discharge port (202) at the bottom of the high-level silo (200). The variable frequency motor (302) is mounted on the support frame (100) and connected to the screw conveyor body (301) to drive the screw conveyor body (301) to convey materials and to adjust the conveying speed of the screw conveyor body (301). The controller (400) is connected to the weighing sensor (201), the discharge valve (203) and the variable frequency motor (302) and is used to adjust the conveying mode of the slag by controlling the weighing sensor (201), the discharge valve (203) and the variable frequency motor (302).

2. The slag feeding device for an electroslag furnace according to claim 1, characterized in that, The high-level silo (200) is divided by a support frame (100) into a first silo (204) with a cylindrical structure and a second silo (205) with a conical structure, and the side slope of the second silo (205) is greater than or equal to 60° and less than or equal to 70°.

3. The slag feeding device for an electroslag furnace according to claim 2, characterized in that, A vibrator (206) is installed on the side of the second compartment (205).

4. The slag feeding device for an electroslag furnace according to claim 1, characterized in that, The support framework (100) includes: The support platform (101) has a rectangular structure; The support leg (102) has multiple legs, each of which is set at one corner of the support platform (101), and each support leg (102) is a telescopic structure.

5. The slag feeding device for an electroslag furnace according to claim 4, characterized in that, The support platform (101) has an assembly hole (103), and the high-level hopper (200) is movably installed in the assembly hole (103) of the support platform (101) through the guide positioning structure (104).

6. The slag feeding device for an electroslag furnace according to claim 1, characterized in that, The spiral conveyor (301) includes: The conveying cylinder (303) is horizontally set, with one end of its side being the inlet and the other end being the outlet. The inlet of the conveying cylinder (303) is connected to the discharge port (202) at the bottom of the high-level silo (200). A transverse auger (304) is installed inside the conveying cylinder (303), and the transverse auger (304) is made of a spiral rod with a spiral angle of 35°.

7. The slag feeding device for an electroslag furnace according to claim 6, characterized in that, The discharge end of the conveying cylinder (303) is connected to a discharge pipe (305), and the discharge pipe (305) has a V-shaped structure with two discharge ports.

8. The slag feeding device for an electroslag furnace according to any one of claims 1 to 7, characterized in that, It also includes a control panel (105), which has an emergency stop control button (106).

9. The slag feeding device for an electroslag furnace according to any one of claims 1 to 7, characterized in that, A vertical ladder (107) is provided on the support frame (100).

10. The slag feeding device for an electroslag furnace according to any one of claims 1 to 7, characterized in that, A level detector (207) is also installed inside the high-level silo (200).

Images