A charging device for a ferrosilicon smelting arc furnace

Abstract

The present application relates to the technical fields of metal smelting, and especially relates to a feeding device of a ferrosilicon smelting submerged arc furnace, which comprises a discharge hopper and a pair of ground rails installed on the ground, a travelling vehicle is arranged between the ground rails, the travelling vehicle travels on the ground rails through rail wheels, a motorized rotating table is fixedly connected to the top end of the travelling vehicle, a top plate is fixedly connected to the rotating end of the motorized rotating table, a pair of T-shaped sliding blocks are fixedly connected to the top end of the top plate, a bottom plate is arranged at the top end of the top plate, a locking mechanism is arranged between the bottom plate and the top plate, and the discharge hopper is arranged at the top of the bottom plate. Through the arrangement of the locking mechanism and the capacity expansion mechanism and other structures, when a new submerged arc furnace needs to be installed beside the ferrosilicon smelting submerged arc furnace in the later period of use of the feeding device of the ferrosilicon smelting submerged arc furnace, only the structures such as the T-shaped frame and the driver need to be installed, and the original feeding vehicle can be directly pulled to the new submerged arc furnace to perform feeding, so that the flexibility of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of metal smelting technology, and in particular to a feeding device for a ferrosilicon smelting submerged arc furnace. Background Technology

[0002] The ferrosilicon smelting submerged arc furnace is an industrial electric furnace specifically designed for producing ferrosilicon alloys. Also known as an electric arc reduction furnace, it inputs a three-phase alternating high current into the furnace through three graphite electrodes. Under the high temperature of the electric arc, the furnace charge, such as silica, coke, and steel scrap, is melted and undergoes a reduction reaction to produce a ferrosilicon alloy containing approximately 75% silicon. The furnace body is a cylindrical steel shell lined with carbon bricks, with a hopper and feeding pipe at the top. It allows for continuous feeding and intermittent tapping of iron. The submerged arc furnace can have a power output of tens of thousands of kilovolt-amperes. The smelting process is energy-intensive and produces large amounts of flue gas, requiring a dust removal and waste heat recovery system. Ferrosilicon is a deoxidizer and alloying additive in steelmaking, and also an important raw material in industries such as metallic magnesium and organosilicon.

[0003] Traditionally, ferrosilicon smelting submerged arc furnaces employ a rigid feeding mode with one furnace and one charging car. A single longitudinal track is fixedly laid on the furnace top, and the charging car is permanently locked above and moves back and forth. There is no lateral movement space in front of the furnace. When expanding the production line, it is necessary to add complete tracks, cable reeling, power distribution, and the entire car. This involves a large amount of civil engineering excavation, and the rearrangement of columns, dust removal pipes, and cable trays. The process is time-consuming and costly, and often cannot be implemented due to narrow sites or dense columns. The existing charging car frame is an integral welded structure, and the wheel track, track gauge, and steering geometry are all customized for a single furnace. There is no lateral movement interface, and it is impossible to add lateral movement modules later. This means that adding one car is equivalent to adding a new line, and the cost of the modification is close to the investment of a new line, which has become the main bottleneck for the flexible expansion of ferrosilicon production capacity.

[0004] Therefore, a feeding device for a ferrosilicon smelting submerged arc furnace is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the prior art by providing a feeding device for a ferrosilicon smelting submerged arc furnace.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a feeding device for a ferrosilicon smelting submerged arc furnace, comprising a discharge hopper and a pair of ground rails installed on the ground, a traveling trolley provided between the ground rails, the traveling trolley traveling on the ground rails via rail wheels, an electric rotary table fixedly connected to the top of the traveling trolley, a top plate fixedly connected to the rotating end of the electric rotary table, a pair of T-shaped sliders fixedly connected to the top of the top plate, a bottom plate provided at the top of the top plate, a locking mechanism provided between the bottom plate and the top plate, the discharge hopper being located on the top of the bottom plate, and an expansion mechanism for later expansion of the production line provided beside the ground rails;

[0007] The expansion mechanism includes a pair of T-shaped frames, which are horizontally fixedly installed on the ground next to the ground rail. A top frame is provided at the top of the T-shaped frames, and a driver is fixedly connected to both sides of the bottom of the top frame. A lower groove is provided on both sides of the bottom of the T-shaped frames, and a rack is fixedly connected to the top of one of the lower grooves on the T-shaped frames. A gear that meshes with the rack is fixedly connected to the output end of the driver. A docking mechanism is provided on the top frame for automatically docking with the base plate and releasing the base plate from its limit position. A pair of top grooves are provided at the top of the base plate, and a locking plate is horizontally slidably connected to the inner side of the top groove.

[0008] In the above technical solution, the T-shaped frame is vertically arranged with respect to the ground rail, and the top frame and the driver move on the T-shaped frame via rail wheels.

[0009] In the above technical solution, the locking mechanism further includes L-shaped blocks, and four pairs of L-shaped blocks are provided. The bottom of the base plate is provided with a groove at the position above the T-shaped slider. Each pair of L-shaped blocks is laterally slidably connected to the top of the groove. The bottom of the top groove is provided with a straight groove at the position above the L-shaped block. The top of the L-shaped block is fixedly connected with a top rod at the position inside the straight groove. The top of the locking plate is provided with two pairs of inclined grooves. The side wall of the locking plate is provided with a side groove. Several right-angled grooves with inclined surfaces are provided at equal intervals on the inner side of the side groove. A pair of fixing plates are fixedly connected to the inner side of the top groove. A rectangular frame is slidably connected between the fixing plates in the longitudinal direction. A limit block is slidably connected to the inner side of the rectangular frame in the transverse direction.

[0010] In the above technical solution, further, the outer wall of the T-shaped slider is provided with positioning grooves relative to the L-shaped block, the limiting block is inclined near the inclined surface of the right-angle groove, and the inclination direction between each pair of inclined grooves is symmetrical, the top rod is inserted into the inner side of the corresponding inclined groove, the limiting block is inserted into the inner side of one of the right-angle grooves, the inner side of the rectangular frame is fixedly connected to the side wall of the limiting block, the inspection plate is installed on the top groove by bolts, the top of the rectangular frame and the bottom of the inspection plate are fixedly connected with return springs, and several return springs are fixedly connected at equal intervals between the side wall of the locking plate and the inner side of the top groove.

[0011] In the above technical solution, round rods are fixedly connected to both sides of the outer wall of the rectangular frame, and slots are opened on the side wall of the bottom plate relative to the side groove.

[0012] In the above technical solution, the expansion mechanism further includes a pair of T-shaped plates. Each driver sidewall has an upper T-shaped groove. A pair of T-shaped blocks are fixedly connected to the sidewall of the bottom plate relative to both sides of the T-shaped frame. Each T-shaped block has a locking groove at its top. The T-shaped plates are slidably connected to the bottom of the top frame, with the bottom of each T-shaped plate passing through the upper T-shaped groove. L-shaped plates are slidably connected to both ends of the inner side of the top frame. Each L-shaped plate has a pressing block fixedly connected to its sidewall, with a pressing groove at the bottom of the pressing block near the bottom plate. A U-shaped frame is fixedly connected to the sidewall of the L-shaped plate, with the sidewall of the U-shaped frame penetrating the outer wall of the top frame. A release block is fixedly connected to the inner side of the U-shaped frame, with the top of the release block at an angle away from the L-shaped plate.

[0013] In the above technical solution, the T-shaped frame sidewalls are provided with lower T-shaped grooves, the top two sides of the T-shaped plate are provided with smooth arc surfaces, a pair of positioning springs are fixedly connected between the bottom end of the T-shaped plate and the bottom end of the top frame, a right-angle block with an inclined surface is fixedly connected to the locking groove near the bottom plate, and the bottom end of the T-shaped plate and the side near the bottom plate are inclined.

[0014] In the above technical solution, a threaded rod is rotatably connected to the inner side of the top frame, and the threaded rod is threaded through and connected to the inner side wall of the L-shaped plate. A pair of drive motors are fixedly connected to the side wall of the top frame, and the output end of the drive motor is fixedly connected to the side wall of the threaded rod through the inner side of the top frame. The release block is inclined at the top end near the L-shaped plate.

[0015] In the above technical solution, an electric telescopic cylinder is fixedly connected to the bottom of the top frame, and a push rod is fixedly connected to the output end of the electric telescopic cylinder. The push rod is set through the outer wall of the top frame, and the push rod is set next to the locking plate. The push rod can extend to push the locking plate to move away from the top frame to lock and fix it.

[0016] In the above technical solution, an L-shaped bracket is fixedly connected to the side of the top plate away from the T-shaped frame, and a touch sensor is fixedly connected to the inner side of the L-shaped bracket.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By setting up a locking mechanism and an expansion mechanism, this invention enables the original charging car to be directly pulled onto the new electric arc furnace for charging when a new electric arc furnace needs to be installed next to the original electric arc furnace in the later stages of the use of the charging device of the ferrosilicon smelting electric arc furnace. This improves the flexibility of the device.

[0019] 2. By incorporating an electric telescopic cylinder and a touch sensor, this invention can automatically reset and reinstall the unloading hopper after the new submerged arc furnace is fed. This allows for switching between two submerged arc furnaces for feeding, increasing the applicability of the device and reducing the footprint. It also eliminates the need to modify the silica scrap conveyor line, thus reducing production costs. Attached Figure Description

[0020] Figure 1 This is a front perspective view of the feeding device of the present invention;

[0021] Figure 2 This is a bottom-view perspective view of the unloading hopper, traveling vehicle, and drive unit of the present invention.

[0022] Figure 3 This is a three-dimensional side view of the unloading hopper and the traveling vehicle of the present invention;

[0023] Figure 4 This is a top-view three-dimensional structural diagram of the walking vehicle, electric rotary table, and top plate of the present invention;

[0024] Figure 5 This is a three-dimensional structural diagram of the top frame and the driver side of the present invention;

[0025] Figure 6 This is a partial three-dimensional structural diagram of the T-shaped frame of the present invention;

[0026] Figure 7 This is a schematic diagram of the partially separated three-dimensional structure of the U-shaped frame, rectangular frame, locking plate, and L-shaped block of the present invention;

[0027] Figure 8 This is a partial top view of the three-dimensional structure of the base plate of the present invention;

[0028] Figure 9 This is a bottom-view perspective view of the three-dimensional structure of the base plate of the present invention;

[0029] Figure 10 This is a bottom-view perspective view of the threaded rod, U-shaped frame, and T-shaped plate of the present invention.

[0030] Figure 11 This is a partial cross-sectional perspective view of the top frame and the driver side of the present invention;

[0031] Figure 12 This is a top view of a partial cross-section of the top frame and bottom plate of the present invention.

[0032] In the diagram: 1. Unloading hopper; 2. Ground rail; 3. Traveling vehicle; 4. Electric rotary table; 5. Top plate; 6. T-shaped slider; 7. Base plate; 8. Groove; 9. Inspection plate; 10. T-shaped frame; 11. Top frame; 12. Driver; 13. Rack; 14. Gear; 15. L-shaped block; 16. Top rod; 17. Locking plate; 18. Inclined groove; 19. Side groove; 20. Right-angle groove; 21. Fixing plate; 22. Rectangular frame; 23. Limiting block; 24. Limiting spring; 25. Return spring; 26. Circular 27. Rod; 28. Slot; 29. ​​T-shaped plate; 30. Upper T-slot; 31. T-shaped block; 32. L-shaped plate; 33. Extrusion block; 34. Extrusion groove; 35. U-shaped frame; 36. Release block; 37. Lower T-slot; 38. Positioning spring; 39. Right-angle block; 40. Threaded rod; 41. Locking groove; 42. Drive motor; 43. Electric telescopic cylinder; 44. Push rod; 45. L-shaped bracket; 46. Touch sensor; 47. Positioning groove; 48. Return spring; 49. Top groove; 40. Straight groove. Detailed Implementation

[0033] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0035] In practical use, it was found that the traditional ferrosilicon smelting submerged arc furnace adopts a rigid feeding mode of one furnace and one charging car. A single longitudinal track is fixed on the furnace top, and the charging car is permanently locked on top and moves back and forth. There is no lateral movement space in front of the furnace. When expanding the production line, it is necessary to add complete tracks, cable reel, power distribution and the whole car. The amount of civil engineering excavation is large, the columns, dust removal pipes and cable trays are rearranged, the cycle is long and the investment is high. Moreover, it is often impossible to implement due to narrow site or dense columns. The existing charging car frame is an integral welded structure. The wheel track, track gauge and steering geometry are all customized for a single furnace. There is no lateral movement interface. Later, it is impossible to add a lateral movement module. As a result, adding one car is equivalent to adding a line. The transformation cost is close to the investment of a new line. It has become the main bottleneck for the flexible expansion of ferrosilicon production capacity. To solve the above problems, the following structure was invented.

[0036] like Figures 1-12The feeding device of a ferrosilicon smelting submerged arc furnace shown includes a discharge hopper 1 and a pair of ground rails 2 installed on the ground. A traveling vehicle 3 is provided between the ground rails 2. The traveling vehicle 3 travels on the ground rails 2 via rail wheels. The traveling vehicle 3 is driven by two three-phase asynchronous motors with reducers, which drive two drive shafts respectively. The motor output is reduced in speed and increased in torque by a planetary reducer, which drives the steel wheels to roll on the steel rails. The wheel flanges are automatically aligned without the need for guidance. An electric rotary table 4 is fixedly connected to the top of the traveling vehicle 3. The electric rotary table 4 is mainly driven by a motor, which drives the top plate 5 and the bottom plate 7 to rotate, thereby changing the discharge direction of the discharge hopper 1.

[0037] The rotating end of the electric rotary table 4 is fixedly connected to a top plate 5. A pair of T-shaped sliders 6 are fixedly connected to the top of the top plate 5. A bottom plate 7 is provided at the top of the top plate 5. A locking mechanism is provided between the bottom plate 7 and the top plate 5. The unloading hopper 1 is set on the top of the bottom plate 7. A spiral compression spring is provided at each of the four corners between the unloading hopper 1 and the bottom plate 7. The upper end of the spring hooks onto the outer wall support of the hopper, and the lower end is fixed to the support of the bottom plate 7 to form a suspension structure. A rubber shock-absorbing pad is added in the middle to absorb lateral shaking. The vibration motor is bolted to the bottom crossbeam of the unloading hopper 1. After starting, the eccentric block rotates to generate directional excitation force. The excitation force is transmitted through the crossbeam, the hopper wall, and the spring, causing the hopper to vibrate. The interface between the hopper wall and the material forms a micro-jump. The material flows along the inclined plane under the superposition of gravity and inertia. The whole process does not require manual knocking and can quickly empty silica and scrap steel. An expansion mechanism for later expansion of the production line is provided next to the ground rail 2.

[0038] The expansion mechanism includes a T-shaped frame 10, and a pair of T-shaped frames 10 are provided. The T-shaped frames 10 are horizontally fixedly installed on the ground next to the ground rail 2. A top frame 11 is provided at the top of the T-shaped frames 10. A driver 12 is fixedly connected to both sides of the bottom of the top frame 11. A lower groove is opened on both sides of the bottom of the T-shaped frame 10. A rack 13 is fixedly connected to the top of one of the lower grooves on the T-shaped frame 10. A gear 14 that meshes with the rack 13 is fixedly connected to the output end of the driver 12. A docking mechanism is provided on the top frame 11 for automatically docking with the base plate 7 and releasing the limit of the base plate 7. A pair of top grooves 48 are opened at the top of the base plate 7. A locking plate 17 is horizontally slidably connected to the inner side of the top grooves 48.

[0039] The T-shaped frame 10 is vertically positioned between the ground rail 2 and the top frame 11 and the drive 12 move on the T-shaped frame 10 via rail wheels;

[0040] When the driver 12 starts running, the output shaft of the driver 12 is directly connected to the gear 14, which meshes with the rack 13 on the T-frame 10. The rotation of the driver 12 is converted into linear thrust, which drives the driver 12 to move on the T-frame 10. The driver 12 and the locking rollers arranged on the top frame 11 are automatically aligned on the T-frame 10 and bear the radial force. The gear 14 and the rack 13 are always preloaded on one side to eliminate backlash. When the power is off, the driver 12 is self-locked or a spring brake pin is provided on the gear 14 side to prevent slippage, thereby realizing the movement of the driver 12 on the T-frame 10.

[0041] The locking mechanism includes L-shaped blocks 15, of which four pairs are provided. The bottom of the base plate 7 has a groove 8 at the position above the T-shaped slider 6. Each pair of L-shaped blocks 15 is laterally slidably connected to the top of the groove 8. The bottom of the top groove 48 has a straight groove 49 through the top of the L-shaped blocks 15. The top of the L-shaped blocks 15 is fixedly connected to the position inside the straight groove 49. The top of the locking plate 17 has two pairs of inclined grooves 18. The side wall of the locking plate 17 has a side groove 19. Several right-angled grooves 20 with inclined surfaces are equidistantly provided on the inner side of the side groove 19. A pair of fixing plates 21 are fixedly connected to the inner side of the top groove 48. A rectangular frame 22 is longitudinally slidably connected between the fixing plates 21. A limit block 23 is laterally slidably connected to the inner side of the rectangular frame 22. The outer wall of the T-shaped slider 6 has a positioning groove 46 at the position next to the L-shaped blocks 15.

[0042] The limiting block 23 is inclined near the inclined surface of the right-angle groove 20, and the inclination direction between each pair of inclined grooves 18 is symmetrical. The top rod 16 is inserted into the inner side of the corresponding inclined groove 18. The limiting block 23 is inserted into the inner side of one of the right-angle grooves 20. The inner side of the rectangular frame 22 and the side wall of the limiting block 23 are fixedly connected to the limiting spring 24. The inspection plate 9 is installed on the top groove 48 by bolts. The top end of the rectangular frame 22 and the bottom end of the inspection plate 9 are fixedly connected to the return spring 25. Several return springs 47 are fixedly connected at equal intervals between the side wall of the locking plate 17 and the inner side of the top groove 48.

[0043] Both sides of the outer wall of the rectangular frame 22 are fixedly connected with round rods 26, and slots 27 are opened on the side wall of the base plate 7 relative to the side groove 19.

[0044] The expansion mechanism includes a pair of T-shaped plates 28. The side walls of the driver 12 are provided with upper T-shaped grooves 29. The side walls of the bottom plate 7 are fixedly connected to a pair of T-shaped blocks 30 on both sides of the T-shaped frame 10. The top of each T-shaped block 30 is provided with a locking groove 40. The T-shaped plates 28 are slidably connected to the bottom of the top frame 11, and the bottom of the T-shaped plates 28 is provided with upper T-shaped grooves 29. The two ends of the inner side of the top frame 11 are slidably connected to L-shaped plates 31. The side walls of the L-shaped plates 31 are fixedly connected to a pressing block 32, and the bottom of the pressing block 32 near the bottom plate 7 is inclined with a pressing groove 33. The side walls of the L-shaped plates 31 are fixedly connected to a U-shaped frame 34, and the side walls of the U-shaped frame 34 are provided through the outer wall of the top frame 11. The inner side of the U-shaped frame 34 is fixedly connected to a release block 35, and the top of the release block 35 away from the L-shaped plate 31 is inclined.

[0045] The T-shaped frame 10 has a lower T-shaped groove 36 on each side wall. The top two sides of the T-shaped plate 28 are both set as smooth arc surfaces. A pair of positioning springs 37 are fixedly connected between the bottom end of the T-shaped plate 28 and the bottom end of the top frame 11. A right-angle block 38 with an inclined surface is fixedly connected to the locking groove 40 near the bottom plate 7. The bottom end of the T-shaped plate 28 and the side near the bottom plate 7 are inclined.

[0046] A threaded rod 39 is rotatably connected to the inner side of the top frame 11, and the threaded rod 39 is threaded through and connected to the inner side wall of the L-shaped plate 31. A pair of drive motors 41 are fixedly connected to the side wall of the top frame 11. The output end of the drive motor 41 passes through the inner side of the top frame 11 and is fixedly connected to the side wall of the threaded rod 39. The release block 35 is inclined at the top end near the L-shaped plate 31.

[0047] During equipment operation, the unloading hopper 1 is initially located below the conveyor line. The conveyor line transports silica and scrap steel together into the unloading hopper 1. After it is full, the traveling trolley 3 is controlled to move on the ground rail 2, which in turn moves the unloading hopper 1. The unloading hopper 1 is then moved to the feeding port of the ferrosilicon smelting submerged arc furnace, and the unloading hopper 1 is then controlled to start feeding. After feeding is completed, the traveling trolley 3 is controlled to move in the opposite direction, moving the unloading hopper 1 back below the conveyor line. This process is repeated to achieve automatic feeding of the ferrosilicon smelting submerged arc furnace.

[0048] When adding a new submerged arc furnace to the ferrosilicon smelting furnace, a pair of T-shaped frames 10 can be installed next to the ground rail 2, and the driver 12 and top frame 11 can be assembled on the T-shaped frames 10. Then, when it is necessary to add material to the new ferrosilicon smelting furnace, the traveling trolley 3 is controlled to move towards the feeding port, and simultaneously the electric rotary table 4 is started to drive the top plate 5 to rotate. At this time, the T-shaped slider 6 drives the bottom plate 7 to rotate, which in turn drives the unloading hopper 1 to rotate, causing the unloading hopper 1 to rotate 90 degrees and face the discharge position of the unloading hopper 1 towards the new ferrosilicon smelting furnace. Then, when the traveling trolley 3 drives the unloading hopper 1... When it moves to the side of the top frame 11, it will drive the T-block 30 to insert into the corresponding upper T-slot 29. During this process, the T-block 30 will pass through the lower T-slot 36 on the T-frame 10. (In order to ensure accurate docking between the unloading hopper 1 and the top frame 11, a laser beam sensor can be installed at the bottom plate 7 and the end of the driver 12. The transmitter on the driver 12 is received by the side wall of the bottom plate 7. When the light path is blocked, an alignment signal is output and the controller prohibits the traveling vehicle 3 from continuing to move. When both sensors receive the beam at the same time, it means that the left and right and the height are aligned and forward docking is allowed. The positioning accuracy is high and no manual visual inspection is required.)

[0049] Then, the drive motor 41 can be started to rotate the threaded rod 39, which in turn causes the threaded L-shaped plate 31 to move laterally inside the top frame 11. At this time, the U-shaped frame 34 and the release block 35 will extend out of the top frame 11, pass through the slot 27 and be inserted into the top slot 48. Then, the release block 35 moves to the position below the round rod 26 and causes the pressing block 32 to move to the position above the T-shaped plate 28. As the L-shaped plate 31 continues to move, the inclined surface of the release block 35 will press the round rod 26 upward (since the rectangular frame 22 can only slide longitudinally between the fixed plates 21, when the inclined surface of the release block 35 presses the outer wall of the round rod 26, it will push the rectangular frame 22 upward). At the same time, the limiting block 23 will move upward, be pulled out from the right angle slot 20, and gradually compress the return spring 25. Then, the round rod 26 moves to the top of the release block 35.

[0050] This releases the positional restriction on the locking plate 17. Subsequently, under the elastic force of the return spring 47, the locking plate 17 is pushed to move towards the top frame 11. During this process, since the top rod 16 can only slide laterally in the straight groove 49 and the top end of the top rod 16 is inserted in the inclined groove 18, the top rod 16 will be squeezed by the inclined surface of the inclined groove 18 during the movement of the locking plate 17, causing the top rod 16 to slide in the straight groove 49 and drive the L-shaped block 15 to move out of the positioning groove 46, releasing the locking restriction between the top plate 5 and the bottom plate 7. During this process, the pressing groove 33 on the pressing block 32 will push the arc surface at the top of the T-shaped plate 28, causing the T-shaped plate 28 to move downward and insert into the corresponding locking groove 40, and gradually compress the positioning spring 37. During the insertion process, the inclined surface at the bottom of the T-shaped plate 28 will press the inclined surface of the right angle block 38, thereby tightly locking the driver 12 and the bottom plate 7 together.

[0051] Finally, the driver 12 can be started, driving the gear 14 to rotate. The gear 14 meshes with the rack 13 on the T-frame 10. The rotation of the driver 12 is converted into linear thrust, which drives the driver 12 to move on the T-frame 10 and pulls the base plate 7 and the unloading hopper 1 to move. Then the unloading hopper 1 is pulled onto the newly added ferrosilicon smelting submerged arc furnace (it should be noted that the power cord of the unloading hopper 1 and the traveling car 3 is wound and unwound by an automatic winding reel, which can ensure the electrical connection after the unloading hopper 1 is separated from the traveling car 3), and the unloading can be started.

[0052] In summary, through the design of the above structure, when a new submerged arc furnace needs to be installed next to the ferrosilicon smelting submerged arc furnace in the later stages of its use, only the T-shaped frame 10 and the driver 12 need to be installed. The original charging car can then be directly pulled onto the new submerged arc furnace for charging, thus improving the flexibility of the device.

[0053] Based on the above embodiments, it was found during use that although the above structure can pull the unloading hopper 1 onto the T-shaped frame 10, it cannot automatically install the unloading hopper 1 onto the top plate 5, which is rather limited. In order to solve the above problems, the above structure has been further improved.

[0054] An electric telescopic cylinder 42 is fixedly connected to the bottom of the top frame 11. A push rod 43 is fixedly connected to the output end of the electric telescopic cylinder 42. The side wall of the push rod 43 penetrates the outer wall of the top frame 11. The push rod 43 is located next to the locking plate 17. The push rod 43 can extend to push the locking plate 17 to move away from the top frame 11 to lock and fix it.

[0055] An L-shaped bracket 44 is fixedly connected to the side of the top plate 5 away from the T-shaped frame 10, and a touch sensor 45 is fixedly connected to the inside of the L-shaped bracket 44.

[0056] During the process of the drive motor 41 driving the pressing block 32 to press the T-shaped plate 28 downward, it will drive the release block 35 to continue moving. At this time, the round rod 26 moves above the release block 35. Before the T-shaped plate 28 is fully inserted, the round rod 26 will move out from the inclined surface on the other side of the release block 35, thereby releasing the pressure on the round rod 26. Then, under the elastic force of the return spring 25, the rectangular frame 22 is pushed downward to reset, and the limit block 23 is driven to insert into the corresponding right angle slot 20. Then, the electric telescopic cylinder 42 is started, driving the push rod 43 to extend. The locking plate 17 is pushed to move away from the top frame 11, thereby pressing the top rod 16 and L-shaped block 15 towards the center through the inclined surface of the inclined groove 18. During this process, the inclined surface of the right angle groove 20 will press the inclined surface of the limiting block 23, causing the limiting block 23 to slide into the rectangular frame 22, while compressing the limiting spring 24. Then, when the right angle groove 20 on the other side moves to the side of the limiting block 23, the compression on the limiting block 23 will be released, and then the limiting block 23 will be pushed into the corresponding right angle groove 20 under the elastic force of the limiting spring 24.

[0057] This process is repeated until the side wall of the L-shaped block 15 moves to the inner position of the T-shaped slider 6 and gradually compresses the return spring 47, which controls the electric telescopic cylinder 42 to stop running. At this time, the limit block 23 is inserted into the corresponding right-angle slot 20, restricting the reset of the locking plate 17. Then, the side wall of the L-shaped block 15 contacts the side wall of the T-shaped slider 6, which can guide and support the sliding of the base plate 7. Subsequently, under the pull of the driver 12, the L-shaped block 15 is moved to the T-shaped frame 10, continuing to guide and support the base plate 7, ensuring the stability of the unloading hopper 1 during the movement on the T-shaped frame 10.

[0058] Finally, after unloading, during the reset process, the control driver 12 drives the top frame 11 and the unloading hopper 1 to reset. Then, when the unloading hopper 1 moves onto the traveling vehicle 3, it causes the bottom plate 7 to contact the touch sensor 45. The touch sensor 45 then transmits a signal to the controller, which stops the driver 12. The controller then controls the drive motor 41 to rotate, repeating the above operation in reverse for the reset. At this time, the limit on the locking plate 17 is released, but the electric telescopic cylinder 42 continues to operate, pushing the L-shaped block 15 into the corresponding positioning groove 46, thus locking the position between the bottom plate 7 and the top plate 5. After the U-shaped frame 34 and the release block 35 reset, when the pressure on the round rod 26 is released, the rectangular rod 26 is pushed by the elastic force of the reset spring 25. The frame 22 and the limiting block 23 move down and reset, thus inserting into the corresponding right-angle slot 20, restricting the position of the locking plate 17. This allows the electric telescopic cylinder 42 to be activated, driving the push rod 43 to extend, thereby pushing the locking plate 17 to move away from the top frame 11. At the same time, the return spring 47 is gradually compressed. At this time, the inclined surface of the inclined groove 18 will press the top rod 16 and the L-shaped block 15 to move towards the middle. During this process, the inclined surface of the right-angle slot 20 will press the inclined surface of the limiting block 23, causing the limiting block 23 to slide into the rectangular frame 22, while compressing the limiting spring 24. Subsequently, when the other right-angle slot 20 moves to the side of the limiting block 23, the compression on the limiting block 23 will be released, and then the limiting block 23 will be pushed into the corresponding right-angle slot 20 under the elastic force of the limiting spring 24.

[0059] This process is repeated until the side wall of the L-shaped block 15 is inserted into the positioning groove 46, at which point the electric telescopic cylinder 42 can be controlled to stop running. At the same time, the limiting block 23 is inserted into the corresponding right-angle groove 20, restricting the reset of the locking plate 17, thereby completing the locking and fixing between the unloading hopper 1 and the traveling vehicle 3. Then, the traveling vehicle 3 can be controlled to move to the filling material below the conveyor line.

[0060] In summary, the above-described structure allows for the automatic reinstallation of the unloading hopper 1 after the new submerged arc furnace is fed, enabling switching between two submerged arc furnaces for feeding. This improves the applicability of the device, reduces the footprint, eliminates the need to modify the silica scrap conveyor line, and reduces production costs.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of the present invention.

[0062] 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 the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A charging device for a ferrosilicon smelting submerged arc furnace, comprising a discharge hopper (1) and a pair of ground rails (2) installed on the ground, characterized in that: A traveling vehicle (3) is provided between the ground rails (2). The traveling vehicle (3) travels on the ground rails (2) via rail wheels. An electric rotary table (4) is fixedly connected to the top of the traveling vehicle (3). A top plate (5) is fixedly connected to the rotating end of the electric rotary table (4). A pair of T-shaped sliders (6) are fixedly connected to the top of the top plate (5). A bottom plate (7) is provided at the top of the top plate (5). A locking mechanism is provided between the bottom plate (7) and the top plate (5). The unloading hopper (1) is located on the top of the bottom plate (7). An expansion mechanism for later expansion of the production line is provided next to the ground rails (2). The expansion mechanism includes a T-shaped frame (10), a pair of which are provided. The T-shaped frames (10) are horizontally fixed on the ground next to the ground rail (2). A top frame (11) is provided at the top of the T-shaped frames (10). A driver (12) is fixedly connected to both sides of the bottom of the top frame (11). A lower groove is provided on both sides of the bottom of the T-shaped frame (10). A rack (13) is fixedly connected to the top of one of the lower grooves on the T-shaped frame (10). A gear (14) that meshes with the rack (13) is fixedly connected to the output end of the driver (12). A docking mechanism is provided on the top frame (11) for automatically docking with the base plate (7) and releasing the limit of the base plate (7). A pair of top grooves (48) are provided at the top of the base plate (7). A locking plate (17) is horizontally slidably connected to the inner side of the top groove (48). The locking mechanism includes L-shaped blocks (15), and four pairs of L-shaped blocks (15) are provided. The bottom of the base plate (7) is provided with a groove (8) above the T-shaped slider (6). Each pair of L-shaped blocks (15) is slidably connected to the top of the groove (8). The bottom of the top groove (48) is provided with a straight groove (49) above the L-shaped block (15). The top of the L-shaped block (15) is fixedly connected with a top rod (16) inside the straight groove (49). The top of the locking plate (17) is provided with two pairs of inclined grooves (18). The side wall of the locking plate (17) is provided with a side groove (19). Several right-angled grooves (20) with inclined surfaces are provided at equal intervals inside the side groove (19). A pair of fixing plates (21) are fixedly connected inside the top groove (48). A rectangular frame (22) is slidably connected between the fixing plates (21). A limit block (23) is slidably connected inside the rectangular frame (22).

2. The feeding device for a ferrosilicon smelting submerged arc furnace according to claim 1, characterized in that: The T-shaped frame (10) is vertically positioned between the ground rail (2), and the top frame (11) and the driver (12) travel on the T-shaped frame (10) via rail wheels.

3. The feeding device for a ferrosilicon smelting submerged arc furnace according to claim 1, characterized in that: The outer wall of the T-shaped slider (6) is provided with positioning grooves (46) relative to the L-shaped block (15). The limiting block (23) is inclined near the inclined surface of the right angle groove (20), and the inclination direction between each pair of inclined grooves (18) is symmetrical. The top rod (16) is inserted into the inner side of the corresponding inclined groove (18). The limiting block (23) is inserted into the inner side of one of the right angle grooves (20). The inner side of the rectangular frame (22) and the side wall of the limiting block (23) are fixedly connected with a limiting spring (24). The top groove (48) is installed with a maintenance plate (9) by bolts. The top of the rectangular frame (22) and the bottom of the maintenance plate (9) are fixedly connected with a return spring (25). The side wall of the locking plate (17) and the inner side of the top groove (48) are fixedly connected with several return springs (47) at equal intervals.

4. The feeding device for a ferrosilicon smelting submerged arc furnace according to claim 1, characterized in that: Both sides of the outer wall of the rectangular frame (22) are fixedly connected with round rods (26), and slots (27) are opened on the side wall of the bottom plate (7) relative to the side groove (19).

5. The feeding device for a ferrosilicon smelting submerged arc furnace according to claim 1, characterized in that: The expansion mechanism includes a pair of T-shaped plates (28). The sidewalls of the driver (12) are provided with upper T-shaped grooves (29). A pair of T-shaped blocks (30) are fixedly connected to the sidewalls of the base plate (7) relative to both sides of the T-shaped frame (10). Each T-shaped block (30) has a locking groove (40) at its top. The T-shaped plates (28) are slidably connected to the bottom of the top frame (11), with the bottom of each T-shaped plate (28) passing through the upper T-shaped grooves (29). The top frame (11)... Both ends of the inner side are horizontally slidably connected to L-shaped plates (31), and the side walls of the L-shaped plates (31) are fixedly connected to extrusion blocks (32). The bottom of the extrusion blocks (32) near the bottom plate (7) is inclinedly provided with extrusion grooves (33). The side walls of the L-shaped plates (31) are fixedly connected to U-shaped frames (34), and the side walls of the U-shaped frames (34) are provided through the outer wall of the top frame (11). The inner side of the U-shaped frames (34) is fixedly connected to release blocks (35), and the top of the release blocks (35) is inclinedly provided on the side away from the L-shaped plates (31).

6. The feeding device for a ferrosilicon smelting submerged arc furnace according to claim 5, characterized in that: The T-shaped frame (10) has a lower T-shaped groove (36) on its side wall. The top two sides of the T-shaped plate (28) are set as smooth arc surfaces. A pair of positioning springs (37) are fixedly connected between the bottom end of the T-shaped plate (28) and the bottom end of the top frame (11). A right-angle block (38) with an inclined surface is fixedly connected to the locking groove (40) on the side near the bottom plate (7). The bottom end of the T-shaped plate (28) and the side near the bottom plate (7) are inclined.

7. The feeding device for a ferrosilicon smelting submerged arc furnace according to claim 5, characterized in that: The top frame (11) is rotatably connected to a threaded rod (39), and the threaded rod (39) is threaded through and connected to the inner wall of the L-shaped plate (31). A pair of drive motors (41) are fixedly connected to the side wall of the top frame (11). The output end of the drive motor (41) passes through the inner side of the top frame (11) and is fixedly connected to the side wall of the threaded rod (39). The release block (35) is inclined at the top end near the L-shaped plate (31).

8. The feeding device for a ferrosilicon smelting submerged arc furnace according to claim 1, characterized in that: An electric telescopic cylinder (42) is fixedly connected to the bottom of the top frame (11). A push rod (43) is fixedly connected to the output end of the electric telescopic cylinder (42). The side wall of the push rod (43) passes through the outer wall of the top frame (11). The push rod (43) is located next to the locking plate (17). The push rod (43) can extend and push the locking plate (17) to move away from the top frame (11) to lock and fix it.

9. The feeding device for a ferrosilicon smelting submerged arc furnace according to claim 1, characterized in that: An L-shaped bracket (44) is fixedly connected to the side of the top plate (5) away from the T-shaped frame (10), and a touch sensor (45) is fixedly connected to the inside of the L-shaped bracket (44).

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