A uniform slag feeding device for a remelting electroslag furnace

Abstract

The application belongs to the technical field of steel metallurgy, in particular to a uniform slag feeding device of a remelting electroslag furnace, which comprises a feeding device, the feeding device comprises a moving trolley, the top of the moving trolley is fixedly connected with a storage bin, and the middle of the moving trolley is fixedly connected with a feeding pipe, which is intermittently rotated through a first rotating column, so as to achieve intermittent inflation of the inflatable air bag, and the gradual inflation of the inflatable air bag can effectively destroy the bridging structure formed between the materials due to adhesion, and at the same time, the inflatable air bag always maintains a certain inflation state during the interval of the two inflation actions, continuously producing extrusion on the materials, which can prevent the materials from re-forming a bridging structure during the inflation interval, thereby more effectively solving the bridging phenomenon, ensuring smooth flow of the materials, avoiding problems such as blockage caused by bridging, guaranteeing the continuity of the whole material conveying, and avoiding the situation of uneven feeding caused by the bridging phenomenon.

Description

Technical Field

[0001] This invention belongs to the field of iron and steel metallurgy technology, specifically a uniform slag feeding device for a remelting electroslag furnace. Background Technology

[0002] A uniform slag feeding device for electroslag remelting furnaces is a specialized feeding equipment independent of the main smelting system. Its core function is to convey electroslag at a stable rate and in a uniform distribution to the surface or interior of the slag layer in the electroslag remelting furnace through a controllable mechanical or pneumatic structure. This device typically includes a storage unit, a quantitative conveying mechanism (such as a screw feeder, vibrating feeder, or pneumatic pusher), guiding components (such as a guide pipe or nozzle), and a control module. By adjusting the conveying speed, frequency, or pressure parameters, it ensures that the electroslag is continuously and uniformly added to the slag pool during the smelting process, thereby maintaining the chemical composition stability and metallurgical reaction uniformity of the slag, ultimately improving the purity and microstructure uniformity of the remelted metal.

[0003] In existing technologies, materials are conveyed by an auger, pushing the electroslag in the storage tank to the discharge port at a stable rate. The auger speed is controlled by an electric or pneumatic drive system to achieve quantitative conveying of the electroslag. The conveyed electroslag is guided by a guide pipe or nozzle and evenly sprinkled on the surface or inside the slag layer of the electroslag remelting furnace. This ensures that the electroslag is continuously and stably added to the slag pool during the smelting process, thereby maintaining the stability of the chemical composition of the slag and the uniformity of the metallurgical reaction, and ultimately improving the purity and microstructure uniformity of the remelted metal.

[0004] The above-mentioned solution still has some problems in practical application. Although the existing equipment can complete the uniform slag addition work of the electroslag remelting furnace, in the process of electroslag remelting, the feeding system needs to stably transport slag-forming agent and small-sized consumable electrodes. The feeding section mostly adopts an inclined structure, relying on the material's own gravity to fall freely. However, such materials often absorb moisture and clump, have uneven particle size distribution or irregular shape, and easily form a stable arched bridge structure on the inner wall of the inclined feeding section, which leads to interruption of material transportation, making it difficult to ensure the continuity of feeding, and thus affecting the uniformity of slag addition.

[0005] Therefore, the present invention provides a uniform slag feeding device for a remelting electroslag furnace. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a uniform slag feeding device for a remelting electroslag furnace, including a feeding device, the feeding device including a mobile trolley, a storage bin fixedly connected to the top of the mobile trolley, a conveying pipe fixedly connected to the middle of the mobile trolley, a spiral body rotatably connected inside the conveying pipe, a connecting pipe fixedly connected to the outer ring surface of the conveying pipe, and a reciprocating air filling mechanism provided on the side of the feeding device;

[0008] The reciprocating inflation mechanism includes a second limiting groove rotatably disposed on the side of the conveying pipe. The second limiting groove consists of a vertical groove and an annular groove, and the vertical groove is connected to the annular groove. A moving block is slidably disposed on the outer ring surface of the second limiting groove. When the moving block moves in the annular groove, it can perform intermittent inflation, and when it moves to the vertical groove, it can perform instantaneous deflation.

[0009] Preferably, the feeding device is provided with an intermittent adjustment mechanism on its side for adjustment. The intermittent adjustment mechanism includes a rotating disc, and the central shaft of the spiral body is rotatably connected to the inside of the end face of the conveying pipe. The rotating disc is fixedly connected to the central shaft of the spiral body.

[0010] A first fixed column is fixedly connected to the side of the rotating disk near the outer ring surface, a rotating block is rotatably connected to the end face of the conveying pipe, a first limiting groove is opened through the inside of the rotating block, and an arc-shaped block is fixedly connected to one side of the rotating disk.

[0011] Preferably, the first fixed column falls into the first limiting groove when the rotating disk rotates, thereby driving the rotating block to rotate. Multiple first limiting grooves are provided, and each first limiting groove is provided with an arc-shaped groove, the curvature of which is adapted to the arc-shaped block.

[0012] Preferably, the reciprocating inflation mechanism includes an air storage chamber, which is fixedly connected to the side of the conveying pipe and forms a relatively closed space with the conveying pipe.

[0013] The reciprocating inflation mechanism further includes a first rotating column, which is fixedly connected to the side of the rotating block. A second limiting groove is provided on the outer ring surface of the first rotating column. A rotating disk is slidably connected inside the second limiting groove. A third fixed column is provided in the middle of the rotating disk. The rotating disk is rotatably connected to the bottom of the third fixed column.

[0014] Preferably, a movable block is fixedly connected to the other end of the third fixed column, a connecting column is fixedly connected to the side of the movable block, a movable circular plate is fixedly connected to the other end of the connecting column, and a protrusion is provided on the inner ring surface of the gas storage chamber, which is adapted to the groove size of the outer ring surface of the movable circular plate.

[0015] Preferably, a second fixed post is provided inside the movable block, the movable block is slidably connected to the outer ring surface of the second fixed post, a return spring is fixedly connected to the side of the movable block, the return spring is sleeved on the outer ring surface of the second fixed post, and the other end of the second fixed post and the return spring are both fixed to the end face of the conveying pipe.

[0016] Preferably, the end face of the second fixed column is provided with a blocking plate, which can block the moving block when the reset spring is reset. When the reset spring is in an unforced state, the rotating disk is located at the junction of the vertical groove and the annular groove of the rotating disk. The arc-shaped block and the arc-shaped groove of the rotating block can counteract the elastic force of the reset spring when the rotating disk moves to the annular groove area.

[0017] Preferably, the other end of the gas storage chamber is provided with a gas delivery hole, which allows for the replenishment of gas to the empty area when the moving circular plate moves.

[0018] Preferably, a gas supply pipe is fixedly connected to the outer ring surface of the gas storage chamber, and the other end of the gas supply pipe is fixedly connected to the outer ring surface of the connecting pipe. An expansion airbag is fixedly connected to the inner ring surface of the connecting pipe, and the expansion airbag is connected to the gas supply pipe.

[0019] Preferably, the rotation of the rotating disk can drive the rotating block to rotate intermittently, thereby intermittently inflating the inside of the inflatable airbag through the annular groove of the second limiting groove. When the rotating disk moves to the side close to the spiral body, inflation is completed, and the reset spring drives the moving circular plate to perform instantaneous linear motion, thereby completing the instantaneous inhalation of the inflatable airbag.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. The uniform slag feeding device for a remelting electroslag furnace described in this invention inflates an expansion bladder via a gas supply pipe. When the rotating block rotates one revolution, the rotating disk moves to the junction of the vertical groove and the annular groove on the side of the second limiting groove near the spiral body. At this time, the expansion bladder is fully inflated without occupying too much space inside the connecting pipe. The cooperation between the first fixed column and the first limiting groove allows the rotating block to work intermittently, thereby driving the first rotating column to rotate intermittently, achieving intermittent inflation of the expansion bladder. The gradual expansion of the expansion bladder applies pressure to the material, effectively breaking down the bridging structure formed by adhesion between materials. During the interval between two inflation actions, the expansion bladder maintains a certain expansion state, continuously squeezing the material. This continuous squeezing prevents the material from reforming bridging during the inflation interval, thus more effectively solving the bridging phenomenon, ensuring smooth material flow, avoiding blockages caused by bridging, ensuring the continuity of material conveying, and preventing uneven feeding due to bridging.

[0022] 2. In the uniform slag feeding device for remelting electroslag furnace described in this invention, when the moving circular plate moves to one side of the spiral body, the rotating disk also moves to the junction of the vertical groove and the annular groove of the second limiting groove. At this time, the reset spring is in a compressed state. Since the direction of the release of the spring force of the reset spring is consistent with the direction of the vertical groove of the second limiting groove, the reset spring will perform the reset work. At this time, the first fixed column has not yet entered the first limiting groove. While the reset spring is resetting, it will push the moving block to move in a straight line in the opposite direction along the guide of the second fixed column. At the same time, the moving circular plate will be pushed to move synchronously through the connecting column. At this time, the gas filled into the expansion bladder will be drawn into the space between the moving circular plate and the conveying pipe, thereby achieving the purpose of instantaneous gas extraction. Through the instantaneous local space change generated by the expansion bladder, the hidden "small arch bridge" formed by the material around the bladder can be broken. The incomplete blockage but the fine structure that hinders the flow rate can be broken. The material is prevented from slowly agglomerating due to gravity during the gas filling interval to form a new obstruction, thereby maintaining the continuous smooth flow of the material channel. Attached Figure Description

[0023] The invention will now be further described with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram showing the positional relationship between the material conveying pipe and the gas storage chamber as illustrated in this invention;

[0026] Figure 3 This is a schematic diagram of the position and structure of the spiral body and the reciprocating inflation mechanism shown in this invention;

[0027] Figure 4 This is the invention shown Figure 3 Enlarged structural diagram at point A in the middle;

[0028] Figure 5 This is a three-dimensional structural diagram of the intermittent adjustment mechanism shown in this invention;

[0029] Figure 6 This is a three-dimensional structural diagram of some components of the reciprocating inflation mechanism shown in this invention;

[0030] Figure 7 This is the invention shown Figure 6 Enlarged structural diagram at point B;

[0031] Figure 8 This is a schematic diagram showing the positional relationship between the connecting tube and the inflatable airbag as illustrated in this invention;

[0032] In the diagram: 1. Feeding device; 101. Moving trolley; 102. Storage bin; 103. Conveying pipe; 104. Spiral; 105. Connecting pipe;

[0033] 2. Intermittent adjustment mechanism; 201. Rotating disc; 202. First fixed column; 203. Rotating block; 204. First limiting groove; 205. Arc-shaped block;

[0034] 3. Reciprocating inflation mechanism; 301. Air storage chamber; 302. First rotating column; 303. Second limiting groove; 304. Rotating disk; 305. Moving block; 306. Connecting column; 307. Moving circular plate; 308. Second fixed column; 309. Return spring; 310. Air inlet; 311. Air inlet pipe; 312. Inflatable airbag; 313. Third fixed column. Detailed Implementation

[0035] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0036] Example 1

[0037] like Figures 1 to 8 As shown in the embodiment of the present invention, a uniform slag feeding device for a remelting electroslag furnace includes a feeding device 1. The feeding device 1 includes a moving trolley 101. A storage bin 102 is fixedly connected to the top of the moving trolley 101. A conveying pipe 103 is fixedly connected to the middle of the moving trolley 101. A spiral body 104 is rotatably connected inside the conveying pipe 103. A connecting pipe 105 is fixedly connected to the outer ring surface of the conveying pipe 103. The feeding device 1 is characterized in that a reciprocating air filling mechanism 3 is provided on its side.

[0038] The reciprocating inflation mechanism 3 includes a second limiting groove 303 rotatably disposed on the side of the conveying pipe 103. The second limiting groove 303 is composed of a vertical groove and an annular groove, and the vertical groove and the annular groove are connected. A moving block 305 is slidably disposed on the outer ring surface of the second limiting groove 303. When the moving block 305 moves in the annular groove, it can perform intermittent inflation. When it moves to the vertical groove, it can perform instantaneous deflation.

[0039] Specifically, although the existing equipment can complete the uniform slag feeding work of the electroslag remelting furnace, in the process of electroslag remelting, the feeding system needs to stably transport slag-forming agents and small-sized consumable electrodes. The feeding section mostly adopts an inclined structure, relying on the material's own gravity to fall freely. In order to avoid mechanical interference, auxiliary conveying components such as screw conveyors are not set up. However, such materials often absorb moisture and clump together, have uneven particle size distribution or irregular shape, and easily form a stable arched bridge structure on the inner wall of the inclined feeding section, which leads to interruption of material conveying, making it difficult to ensure the continuity of feeding, and thus affecting the uniformity of slag feeding.

[0040] Therefore, this invention solves this problem by setting a corresponding structure. The present invention provides a uniform slag feeding device for a remelting electroslag furnace. When electroslag feeding is required, the moving trolley 101 is pushed to a designated position, and the connecting pipe 105 is connected to the feed inlet of the electroslag remelting furnace. After the connecting pipe 105 is connected, the storage bin 102 discharges its internal electroslag into the conveying pipe 103. At this time, the external motor starts and drives the screw 104 to rotate. When the screw 104 rotates, it conveys the electroslag inside the conveying pipe 103. When the electroslag moves to the connection point between the connecting pipe 105 and the conveying pipe 103, the electroslag falls through the connection area into the connecting pipe 105 and then into the electroslag remelting furnace. However, due to the electroslag remelting process... The feeding system needs to stably transport slag-forming agents and small-sized consumable electrodes. The feeding section often adopts an inclined structure, relying on the material's own gravity to fall freely. To avoid mechanical interference, auxiliary conveying components such as augers are not installed. However, such materials often agglomerate due to moisture absorption, uneven particle size distribution, or irregular shape, easily forming a stable arched bridging structure on the inner wall of the inclined feeding section, causing material conveying interruption and making it difficult to ensure feeding continuity. This, in turn, affects the uniformity of slag addition. At this time, the rotation of the second limiting groove 303 drives the moving block 305 to move, and air is injected at the same time. This can apply pressure to the arched bridging structure inside the connecting pipe 105, thereby breaking the arched bridging structure, improving the continuity of material falling, and further improving the uniformity of material falling.

[0041] Example 2

[0042] like Figures 2 to 8 As shown in Example 1, another embodiment of the present invention is as follows:

[0043] like Figure 3 and Figure 4 As shown, the feeding device 1 in this embodiment is provided with an intermittent adjustment mechanism 2 for adjustment on its side. The intermittent adjustment mechanism 2 includes a rotating disc 201. The central shaft of the spiral body 104 is rotatably connected through the inside of the end face of the conveying pipe 103. The rotating disc 201 is fixedly connected to the central shaft of the spiral body 104.

[0044] like Figure 5 As shown, in this embodiment, a first fixed column 202 is fixedly connected to the side of the rotating disk 201 near the outer ring surface, a rotating block 203 is rotatably connected to the end face of the conveying pipe 103, a first limiting groove 204 is provided through the interior of the rotating block 203, and an arc-shaped block 205 is fixedly connected to one side of the rotating disk 201.

[0045] Specifically, when the external motor drives the spiral 104 to rotate, since the spiral 104 and the rotating disk 201 are fixed, the rotating disk 201 will be driven to rotate synchronously while the spiral 104 rotates, and the first fixed column 202 fixed to it will rotate synchronously while rotating. At this time, the outer ring surface of the arc block 205 and the arc groove on the rotating block 203 are in a fitting state.

[0046] As the arc-shaped block 205 continues to rotate, it will gradually disengage from the arc-shaped groove on the rotating block 203. At this time, the first fixed post 202 will gradually rotate into the first limiting groove 204. When the arc-shaped block 205 completely disengages from the arc-shaped groove on the rotating block 203, the first fixed post 202 will slide into the first limiting groove 204. Since the rotating disk 201 is always rotating, the first fixed post 202 that has slid into the first limiting groove 204 will also rotate synchronously and push the rotating block 203 to rotate at the same time, thereby providing support for subsequent intermittent inflation.

[0047] like Figure 3 As shown, the reciprocating inflation mechanism 3 in this embodiment includes an air storage chamber 301, which is fixedly connected to the side of the conveying pipe 103 and forms a relatively closed space with the conveying pipe 103.

[0048] like Figure 6 As shown, the reciprocating inflation mechanism 3 in this embodiment further includes a first rotating column 302, which is fixedly connected to the side of the rotating block 203. A second limiting groove 303 is provided on the outer ring surface of the first rotating column 302. A rotating disk 304 is slidably connected inside the second limiting groove 303. A third fixing column 313 is provided in the middle of the rotating disk 304. The rotating disk 304 is rotatably connected to the bottom of the third fixing column 313.

[0049] like Figure 3 and Figure 6 As shown, in this embodiment, a reset spring 309 is fixedly connected to the side of the movable block 305, a second fixing post 308 is provided inside the movable block 305, the other end of the third fixing post 313 is fixedly connected to the movable block 305, a connecting post 306 is fixedly connected to the side of the movable block 305, and a movable circular plate 307 is fixedly connected to the other end of the connecting post 306. The inner ring surface of the gas storage chamber 301 is provided with a protrusion that matches the size of the groove on the outer ring surface of the movable circular plate 307.

[0050] like Figure 3 As shown, the gas storage chamber 301 in this embodiment has a gas delivery hole 310 through it at the other end. The gas delivery hole 310 can replenish the missing area when the moving circular plate 307 moves.

[0051] like Figure 3 and Figure 8 As shown, in this embodiment, a gas supply pipe 311 is fixedly connected to the outer ring surface of the gas storage chamber 301. The other end of the gas supply pipe 311 is fixedly connected to the outer ring surface of the connecting pipe 105. An expansion airbag 312 is fixedly connected to the inner ring surface of the connecting pipe 105. The expansion airbag 312 is connected to the gas supply pipe 311.

[0052] Specifically, when the rotating block 203 is driven to rotate by the first fixed column 202, it will synchronously drive the first rotating column 302 fixed to it to rotate synchronously. When the first rotating column 302 rotates, it will synchronously drive the second limiting groove 303 opened on its outer ring surface to rotate synchronously. Since the rotating disk 304 slides inside the second limiting groove 303, when the second limiting groove 303 rotates, the rotating disk 304, which is initially located at the junction of the vertical groove and the annular groove of the second limiting groove 303, will move along the annular groove of the second limiting groove 303 towards the direction of the spiral body 104. Since the moving block 305 is connected to the rotating disk 304 through the third fixed column 313, the moving block 305 will also move synchronously when the rotating disk 304 moves.

[0053] However, since the movable block 305 slides on the outer ring surface of the second fixed column 308, when the first rotating column 302 rotates, the movable block 305 will move linearly along the guide of the second fixed column 308. When the movable block 305 moves linearly, it will synchronously drive the connecting column 306 fixed to it to move synchronously, which will in turn drive the movable circular plate 307 to move in the direction of the spiral body 104. Since the end face of the gas storage chamber 301 has a through-hole 310, when the movable circular plate 307 moves, the outside air will fill the empty area, thereby maintaining the gas storage chamber. The internal air pressure of 301 is balanced. At the same time, when the moving block 305 moves in a straight line, the return spring 309 will be squeezed by the moving block 305 and gradually contract. However, since the arc of the arc block 205 is matched with the arc groove of the first limiting groove 204, when the first fixed post 202 is disengaged from the first limiting groove 204, the arc block 205 and the arc groove of the first limiting groove 204 will limit the elastic force of the return spring 309. At the same time, the return spring 309 will not be able to perform the reset work because the rotating disk 304 is resisted by the annular groove of the second limiting groove 303.

[0054] When the rotating disk 201 rotates once, the rotating block 203 will rotate once. At this time, the moving circular plate 307 will gradually move closer to the spiral body 104 under the action of the moving block 305. The air in the area between the moving circular plate 307 and the end face of the conveying pipe 103 will be compressed and inflated into the expansion airbag 312 through the air conveying pipe 311. When the rotating block 203 rotates once, the rotating disk 304 will move to the junction of the vertical groove and the annular groove on the side of the second limiting groove 303 near the spiral body 104. At this time, the expansion airbag 312 will be fully inflated. It does not occupy too much space inside the connecting pipe 105 for material conveying. Through the cooperation of the first fixed column 202 and the first limiting groove 204, the rotating block 203 can work intermittently, thereby driving the first rotating column 302 to rotate intermittently, thus achieving intermittent inflation of the expansion bladder 312. The gradual expansion of the expansion bladder 312 will apply pressure to the material, which can effectively break the bridging structure formed by the adhesion between materials. At the same time, during the interval between two inflation actions, the expansion bladder 312 always maintains a certain expansion state, continuously exerting a squeezing effect on the material. This continuous squeezing can prevent the material from re-forming bridging during the inflation interval, thereby more effectively solving the bridging phenomenon, ensuring that the material can flow smoothly, avoiding problems such as blockage caused by bridging, ensuring the continuity of the entire material conveying, and avoiding uneven feeding caused by bridging.

[0055] like Figure 6 As shown, in this embodiment, the moving block 305 is provided with a second fixed post 308 inside. The moving block 305 is slidably connected to the outer ring surface of the second fixed post 308. The reset spring 309 is sleeved on the outer ring surface of the second fixed post 308. The other ends of the second fixed post 308 and the reset spring 309 are both fixed to the end face of the conveying pipe 103.

[0056] Specifically, when the movable circular plate 307 moves to one side of the spiral body 104, the rotating disk 304 will also move to the junction of the vertical groove and the annular groove of the second limiting groove 303. At this time, the return spring 309 is in a compressed state. Since the direction of the release of the spring force of the return spring 309 is consistent with the direction of the vertical groove of the second limiting groove 303, the return spring 309 will perform the reset operation. At this time, the first fixed post 202 has not yet entered the first limiting groove 204. While the return spring 309 is resetting, it will push the moving block 305 along the guide of the second fixed post 308 in the opposite direction. The direction moves in a straight line, and at the same time, the moving circular plate 307 is pushed to move synchronously through the connecting column 306. At this time, the gas filled into the expansion bladder 312 will be drawn into the space between the moving circular plate 307 and the conveying pipe 103, thereby achieving the purpose of instantaneous air extraction. Through the instantaneous local space change generated by the expansion bladder 312, the hidden "small arch bridge" formed by the material around the bladder can be broken. The incomplete blockage of the fine structure that hinders the flow rate can be broken, and the material can be prevented from slowly gathering back due to gravity during the inflation interval to form a new obstruction, thereby maintaining the continuous smooth flow of the material channel.

[0057] Working principle: When the external motor drives the spiral body 104 to rotate, since the spiral body 104 and the rotating disk 201 are fixed, the rotating disk 201 will be driven to rotate synchronously while the spiral body 104 rotates, and the first fixed column 202 fixed to it will rotate synchronously. At this time, the outer ring surface of the arc block 205 and the arc groove on the rotating block 203 are in a fit state.

[0058] As the arc-shaped block 205 continues to rotate, it will gradually disengage from the arc-shaped groove on the rotating block 203. At this time, the first fixed post 202 will gradually rotate into the first limiting groove 204. When the arc-shaped block 205 completely disengages from the arc-shaped groove on the rotating block 203, the first fixed post 202 will slide into the first limiting groove 204. Since the rotating disk 201 is always rotating, the first fixed post 202 that has slid into the first limiting groove 204 will also rotate synchronously and push the rotating block 203 to rotate at the same time, thereby providing support for subsequent intermittent inflation.

[0059] When the rotating block 203 is driven to rotate by the first fixed column 202, it will synchronously drive the first rotating column 302 fixed to it to rotate synchronously. When the first rotating column 302 rotates, it will synchronously drive the second limiting groove 303 opened on its outer ring surface to rotate synchronously. Since the rotating disk 304 slides inside the second limiting groove 303, when the second limiting groove 303 rotates, the rotating disk 304, which is initially located at the junction of the vertical groove and the annular groove of the second limiting groove 303, will move along the annular groove of the second limiting groove 303 towards the direction of the spiral body 104. Since the moving block 305 is connected to the rotating disk 304 through the third fixed column 313, the moving block 305 will also move synchronously when the rotating disk 304 moves.

[0060] However, since the movable block 305 slides on the outer ring surface of the second fixed column 308, when the first rotating column 302 rotates, the movable block 305 will move linearly along the guide of the second fixed column 308. When the movable block 305 moves linearly, it will synchronously drive the connecting column 306 fixed to it to move synchronously, which will in turn drive the movable circular plate 307 to move in the direction of the spiral body 104. Since the end face of the gas storage chamber 301 has a through-hole 310, when the movable circular plate 307 moves, the outside air will fill the empty area, thereby maintaining the gas storage chamber. The internal air pressure of 301 is balanced. At the same time, when the moving block 305 moves in a straight line, the return spring 309 will be squeezed by the moving block 305 and gradually contract. However, since the arc of the arc block 205 is matched with the arc groove of the first limiting groove 204, when the first fixed post 202 is disengaged from the first limiting groove 204, the arc block 205 and the arc groove of the first limiting groove 204 will limit the elastic force of the return spring 309. At the same time, the return spring 309 will not be able to perform the reset work because the rotating disk 304 is resisted by the annular groove of the second limiting groove 303.

[0061] When the rotating disk 201 rotates once, the rotating block 203 will rotate once. At this time, the moving circular plate 307 will gradually move closer to the spiral body 104 under the action of the moving block 305. The air in the area between the moving circular plate 307 and the end face of the conveying pipe 103 will be compressed and inflated into the expansion airbag 312 through the air conveying pipe 311. When the rotating block 203 rotates once, the rotating disk 304 will move to the junction of the vertical groove and the annular groove on the side of the second limiting groove 303 near the spiral body 104. At this time, the expansion airbag 312 will be fully inflated. It does not occupy too much space inside the connecting pipe 105 for material conveying. Through the cooperation of the first fixed column 202 and the first limiting groove 204, the rotating block 203 can work intermittently, thereby driving the first rotating column 302 to rotate intermittently, thus achieving intermittent inflation of the expansion bladder 312. The gradual expansion of the expansion bladder 312 will apply pressure to the material, which can effectively break the bridging structure formed by the adhesion between materials. At the same time, during the interval between two inflation actions, the expansion bladder 312 always maintains a certain expansion state, continuously exerting a squeezing effect on the material. This continuous squeezing can prevent the material from re-forming bridging during the inflation interval, thereby more effectively solving the bridging phenomenon, ensuring that the material can flow smoothly, avoiding problems such as blockage caused by bridging, ensuring the continuity of the entire material conveying, and avoiding uneven feeding caused by bridging.

[0062] When the movable circular plate 307 moves to one side of the spiral body 104, the rotating disk 304 will also move to the junction of the vertical groove and the annular groove of the second limiting groove 303. At this time, the return spring 309 is in a compressed state. Since the direction of the release of the elastic force of the return spring 309 is consistent with the direction of the vertical groove of the second limiting groove 303, the return spring 309 will perform the reset operation. At this time, the first fixed post 202 has not yet entered the first limiting groove 204. While the return spring 309 is resetting, it will push the moving block 305 in the opposite direction along the guide of the second fixed post 308. The material moves in a straight line and simultaneously pushes the moving circular plate 307 to move synchronously through the connecting column 306. At this time, the gas filled into the expansion bladder 312 is drawn into the space between the moving circular plate 307 and the conveying pipe 103, thereby achieving the purpose of instantaneous air extraction. Through the instantaneous local spatial change generated by the expansion bladder 312, the hidden "small arch bridge" formed by the material around the bladder can be broken. The incomplete blockage of the material's flow rate is prevented, and the material is prevented from slowly gathering back due to gravity during the inflation interval, thus maintaining the continuous smooth flow of the material channel.

[0063] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A uniform slag feeding device for a remelting electroslag furnace, comprising a feeding device (1), wherein the feeding device (1) includes a moving trolley (101), a storage bin (102) is fixedly connected to the top of the moving trolley (101), a conveying pipe (103) is fixedly connected to the middle of the moving trolley (101), a spiral (104) is rotatably connected inside the conveying pipe (103), and a connecting pipe (105) is fixedly connected to the outer circumference of the conveying pipe (103), characterized in that: The feeding device (1) is provided with a reciprocating air inflation mechanism (3) on its side; The reciprocating inflation mechanism (3) includes a second limiting groove (303) rotatably disposed on the side of the conveying pipe (103). The second limiting groove (303) is composed of a vertical groove and an annular groove, and the vertical groove is connected to the annular groove. A moving block (305) is slidably disposed on the outer ring surface of the second limiting groove (303). When the moving block (305) moves at the annular groove, it can perform intermittent inflation. When it moves to the vertical groove, it can perform instantaneous deflation. The feeding device (1) is provided with an intermittent adjustment mechanism (2) for adjustment on the side. The intermittent adjustment mechanism (2) includes a rotating disc (201). The central shaft of the spiral body (104) is rotatably connected to the inside of the end face of the conveying pipe (103). The rotating disc (201) is fixedly connected to the central shaft of the spiral body (104). The rotating disk (201) is fixedly connected to a first fixed column (202) on the side near the outer ring surface. The end face of the conveying pipe (103) is rotatably connected to a rotating block (203). The rotating block (203) has a first limiting groove (204) through it. The rotating disk (201) is fixedly connected to an arc-shaped block (205) on one side. When the first fixed column (202) rotates with the rotating disk (201), it will fall into the first limiting groove (204), thereby driving the rotating block (203) to rotate. There are multiple first limiting grooves (204), and each first limiting groove (204) is provided with an arc-shaped groove, the curvature of which is adapted to the arc-shaped block (205). The reciprocating inflation mechanism (3) includes an air storage chamber (301), which is fixedly connected to the side of the conveying pipe (103) and forms a relatively closed space with the conveying pipe (103); The reciprocating inflation mechanism (3) further includes a first rotating column (302), which is fixedly connected to the side of the rotating block (203). A second limiting groove (303) is provided on the outer ring surface of the first rotating column (302). A rotating disk (304) is slidably connected inside the second limiting groove (303). A third fixed column (313) is provided in the middle of the rotating disk (304). The rotating disk (304) is rotatably connected to the bottom of the third fixed column (313).

2. The uniform slag feeding device for a remelting electroslag furnace according to claim 1, characterized in that: The third fixed column (313) is fixedly connected to a movable block (305) at the other end. A connecting column (306) is fixedly connected to the side of the movable block (305). A movable circular plate (307) is fixedly connected to the other end of the connecting column (306). The inner ring surface of the gas storage chamber (301) is provided with a protrusion that matches the groove size of the outer ring surface of the movable circular plate (307).

3. The uniform slag feeding device for a remelting electroslag furnace according to claim 2, characterized in that: The movable block (305) is provided with a second fixed post (308) inside. The movable block (305) is slidably connected to the outer ring surface of the second fixed post (308). A reset spring (309) is fixedly connected to the side of the movable block (305). The reset spring (309) is sleeved on the outer ring surface of the second fixed post (308). The other end of the second fixed post (308) and the reset spring (309) are both fixed to the end face of the conveying pipe (103).

4. The uniform slag feeding device for a remelting electroslag furnace according to claim 3, characterized in that: The end face of the second fixed column (308) is provided with a blocking plate, which can block the moving block (305) when the reset spring (309) is reset. When the reset spring (309) is in an unforced state, the rotating disk (304) is located at the junction of the vertical groove and the annular groove of the rotating disk (304). The arc-shaped block (205) and the arc-shaped groove of the rotating block (203) can counteract the elastic force of the reset spring (309) when the rotating disk (304) moves to the annular groove area.

5. The uniform slag feeding device for a remelting electroslag furnace according to claim 4, characterized in that: The other end of the gas storage chamber (301) is provided with a gas delivery hole (310), which can replenish the empty area when the moving circular plate (307) moves.

6. The uniform slag feeding device for a remelting electroslag furnace according to claim 5, characterized in that: The outer ring of the gas storage chamber (301) is fixedly connected to a gas supply pipe (311), and the other end of the gas supply pipe (311) is fixedly connected to the outer ring of the connecting pipe (105). An inflatable airbag (312) is fixedly connected to the inner ring of the connecting pipe (105), and the inflatable airbag (312) is connected to the gas supply pipe (311).

7. The uniform slag feeding device for a remelting electroslag furnace according to claim 6, characterized in that: The rotating disk (201) can drive the rotating block (203) to rotate intermittently, thereby intermittently inflating the inside of the inflatable airbag (312) through the annular groove of the second limiting groove (303). When the rotating disk (304) moves to the side close to the spiral body (104), inflation will be completed, and the reset spring (309) will drive the moving circular plate (307) to perform instantaneous linear motion, thereby completing the instantaneous inhalation of the inflatable airbag (312).

Images