Refining furnace scrap steel preheating feeding device with energy recycling function

Abstract

The invention discloses a refining furnace scrap steel preheating and feeding device with an energy recycling function, and relates to the technical field of scrap steel preheating and feeding, the refining furnace scrap steel preheating and feeding device comprises a base and a fixing frame, and the fixing frame is fixedly installed at the top of the base; the driving device is arranged on the inner wall of the fixing frame; the heating equipment is fixedly mounted at the output end of the driving device, and the driving device is used for driving the heating equipment to move up and down; the preheating table is slidably mounted at the top of the base and is made of a high-temperature-resistant material, an air inlet is formed in the surface of the preheating table, generated heat is recycled through a waste heat recycling device, waste heat can enter the preheating table from the air inlet through the air inlet to heat the side edge of the waste steel, and the waste steel can be heated through the waste heat recycling device. The situation that the waste heat effect is affected due to uneven heating caused by the fact that the part, close to the inner wall of the preheating table, of the scrap steel is not fully heated in the heating process is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of scrap steel preheating and charging, in particular to a scrap steel preheating and charging device for a refining furnace with an energy recovery function. Background Art

[0002] The scrap steel preheating and charging device of the refining furnace is a device used in steel smelting, especially in the scrap steel processing process, to improve the heating and melting efficiency of the scrap steel in the furnace.

[0003] The patent with patent announcement number CN208872106U relates to a scrap steel preheating and charging device for a refining furnace, which belongs to the technical field of ladle refining furnaces. The scrap steel preheating and charging device for a refining furnace includes a load-bearing bracket, a preheating furnace body installed on the bracket, a weighing device for obtaining the weight of the preheating furnace body, a burner installed on the preheating furnace body and used to heat the scrap steel, a pipeline system for supplying primary refining furnace gas and combustion-supporting air to the burner, an exhaust gas discharge device and a charging device installed on the preheating furnace body, and a vibrating unloading device installed at the bottom of the preheating furnace body. The patent is arranged on the LF ladle refining furnace, and can make full use of the LF ladle refining furnace's own molten steel temperature and the gas generated by the primary refining furnace as a baking heat source to preheat the scrap steel. After preheating, the scrap steel enters the refining furnace for refining according to a fixed proportion. The patent can realize the recycling and reuse of steel elements in the waste, reduce the production cost per ton of steel, and improve resource utilization.

[0004] In the above patent, the steel elements in the waste can be recycled and reused, reducing the production cost per ton of steel while improving resource utilization. However, during the heating process, the part of the scrap steel close to the preheating furnace body is not fully heated, resulting in uneven heating and affecting the preheating effect. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a scrap steel preheating and charging device for a refining furnace with an energy recovery function, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a scrap steel preheating and charging device for a refining furnace with an energy recovery function, comprising: a base, a fixing frame, the fixing frame being fixedly mounted on the top of the base; a driving device, the driving device being arranged on the inner wall of the fixing frame; a heating device, the heating device being fixedly mounted on the output end of the driving device, the driving device being used to drive the heating device to move up and down, a sealing cover being provided at the bottom of the heating device, and the heating device being an induction heating furnace; a preheating table, the preheating table being slidably mounted on the top of the base, the preheating table being made of high-temperature resistant material, an air inlet being provided on the surface of the preheating table, a driving wheel being provided at the bottom of the preheating table, and the driving wheel being driven by a motor; and A heat recovery device, wherein the waste heat recovery device is fixedly mounted on the surface of the heating equipment, and the waste heat recovery device is used to recover the heat generated by the heating equipment; a slide rod is slidably mounted on the bottom of the preheating table, a heating plate is fixedly mounted on the bottom of the slide rod, a leakage hole is provided on the surface of the heating plate, a pulley is fixedly mounted on the surface of the heating plate, a trapezoidal plate is fixedly mounted on the inner wall of the base, and the pulley slides on the top of the trapezoidal plate. By loading the scrap steel onto the preheating table, and then starting the preheating table to move toward the bottom of the heating equipment, and then starting the driving device to move downward, the downward movement of the driving device will drive the heating equipment to move downward, and the downward movement of the heating equipment will drive the sealing cover to move downward to cover the preheating table, thereby heating the scrap steel inside the heating equipment.

[0007] According to the above technical solution, a circular ring is slidably installed on the inner wall of the preheating table, an air inlet hole is opened on the surface of the circular ring, a sealing arc plate is slidably installed on the top of the preheating table, a rotating plate is rotatably installed on the inner wall of the circular ring, and the end of the rotating plate away from the circular ring is rotatably installed on the inner wall of the sealing arc plate. The downward movement of the circular ring will drive the rotating plate to move downward, and the downward movement of the rotating plate will pull the sealing arc plate to move toward the direction close to the heating equipment, and the heating equipment will be wrapped by the sealing arc plate.

[0008] According to the above technical solution, a No. 1 spring is arranged between the preheating table and the slide rod. When the pulley is separated from the trapezoidal plate, the elastic force of the No. 1 spring itself will drive the slide rod to reset. A No. 2 spring is arranged between the preheating table and the circular ring. When the circular ring is separated from the heating equipment, the elastic force of the No. 2 spring itself will drive the circular ring to reset.

[0009] According to the above technical solution, a heating device for convenient heating and a recycling device for recycling scrap steel are provided on the base. The heating device includes a recycling cover, a hollow rod, a pulley rod, a baffle, a recycling frame and a protruding rod. When the scrap steel is heated, the preheating table will move toward the recycling frame. The movement of the preheating table toward the recycling frame will drive the pulley to move along the trapezoidal plate. When the pulley moves to the inclined surface of the trapezoidal plate, the pulley loses the support of the trapezoidal plate and moves downward. The downward movement of the pulley will drive the heating plate to move downward. The recycling cover is fixedly installed on the bottom of the heating plate. The inner wall of the recycling cover is a concave bowl shape. The hollow rod is fixedly installed on the bottom of the heating plate. The pulley rod is slidably installed on the inner wall of the hollow rod. The baffle is fixedly installed on the surface of the pulley rod. The recycling frame is slidably installed on the inner wall of the base. The protruding rod is fixedly installed on the surface of the recycling frame.

[0010] According to the above technical solution, a slide is slidably installed on the top of the recycling frame, and a U-shaped frame is fixedly installed on the surface of the slide. When the recycling cover moves in the direction away from the heating equipment, the side of the recycling cover close to the U-shaped frame will contact the U-shaped frame. The continuous movement of the recycling cover will push the U-shaped frame to move in the direction away from the heating equipment. The movement of the U-shaped frame in the direction away from the heating equipment will push the slide to move in the direction away from the heating equipment. The movement of the slide in the direction away from the heating equipment will flatten the scrap steel that is piled up too high on the recycling frame.

[0011] According to the above technical solution, a No. 3 spring is arranged between the pulley rod and the hollow rod. When the pulley rod is separated from the protruding rod, the elastic force of the No. 3 spring itself will drive the pulley rod to reset. A No. 4 spring is arranged between the recovery frame and the slide plate. When the slide plate is separated from the recovery cover, the elastic force of the No. 4 spring itself will drive the slide plate to reset.

[0012] According to the above technical solution, the recycling device includes a connecting frame, a sliding rod, a rack, a gear, a tooth plate, a pushing frame and an L-shaped plate. When the heating plate moves toward the connecting frame, the connecting frame will push the scrap steel on the heating plate into the recycling frame, and at the same time, the U-shaped frame moves in the direction away from the heating equipment, pushing the sliding rod to move in the direction away from the heating equipment. The connecting frame is fixedly mounted on the inner wall of the base, the sliding rod is slidably mounted on the inner wall of the connecting frame, the rack is fixedly mounted on the surface of the sliding rod, the rack is slidably mounted on the inner wall of the connecting frame, the gear is rotatably mounted on the inner wall of the connecting frame, the tooth plate is slidably mounted on the inner wall of the connecting frame, the rack is meshed with the surface of the gear, the gear is meshed with the surface of the tooth plate, the pushing frame is fixedly mounted on the bottom of the tooth plate, the L-shaped plate is slidably mounted on the surface of the recycling frame, and the L-shaped plate is in contact with the surface of the pushing frame.

[0013] According to the above technical solution, a fixed block is fixedly installed on the surface of the pushing frame, a rotating plate is rotatably installed on the bottom of the connecting frame, and a short plate is fixedly installed on the surface of the rotating plate. The movement of the pushing frame toward the direction close to the heating equipment will drive the fixed block to move toward the direction close to the heating equipment. The movement of the fixed block toward the direction close to the heating equipment will push the short plate to rotate. The rotation of the short plate will drive the rotating plate to rotate, and the scrap steel on the edge of the heating disk is pushed into the recycling frame through the rotation of the rotating plate.

[0014] According to the above technical solution, a No. 5 spring is arranged between the L-shaped plate and the recovery frame, and the No. 5 spring drives the L-shaped plate to reset. A No. 6 spring is arranged between the rack and the connecting frame. When the U-shaped frame is separated from the sliding rod, the elastic force of the No. 6 spring itself will drive the rack to reset. A No. 1 torsion spring is arranged between the connecting frame and the rotating plate. When the short plate is separated from the fixed block, the No. 1 torsion spring will drive the rotating plate to reset.

[0015] The present invention provides a scrap steel preheating and charging device for a refining furnace with an energy recovery function. It has the following beneficial effects: (1) This invention covers the preheating table with a heating device to heat the scrap steel inside the heating device. At the same time, the excess heat generated by the heating device will be recovered by the waste heat recovery device. The generated heat will be recovered and reused by the waste heat recovery device. The waste heat will enter the preheating table through the air inlet and the air inlet hole to heat the side of the scrap steel, thereby preventing the part of the scrap steel close to the inner wall of the preheating table from not being fully heated during the heating process, resulting in uneven heating and affecting the waste heat effect. During heating, heat will enter from the leakage holes on the surface of the heating plate, and the heat will accumulate inside the recovery cover. The accumulated heat will heat the bottom of the heating plate, thereby improving the heating effect on the bottom of the scrap steel.

[0016] (2) In this invention, when adding scrap steel, the circular ring will block the air inlet in the initial stage to prevent slag from entering the air inlet when adding scrap steel, causing the air inlet to be blocked and affecting the preheating effect. At the same time, the downward movement of the circular ring will drive the rotating plate to move downward, and the downward movement of the rotating plate will pull the sealing arc plate to move closer to the heating device. When the sealing arc plate moves closer to the middle of the heating device, the bottom of the sealing arc plate slides on the table of the preheating table to wrap the heating device, preventing heat from leaking out from between the preheating table and the heating device during heating, causing heat loss and affecting the heating effect.

[0017] (3) This invention recycles the scrap iron and steel chips in the recycling hood to prevent the recycling hood from being filled with iron chips, which would affect the heat circulation. At the same time, the movement of the recycling hood away from the heating device would push the slide plate away from the heating device. The movement of the slide plate away from the heating device would push the U-shaped frame away from the heating device to flatten the scrap iron that is piled up too high on the recycling frame, thereby preventing the scrap iron from piling up too high and falling out of the recycling frame later, which would affect the recycling effect of the scrap iron.

[0018] (4) In this invention, when the heating plate drives the pulley to move along the trapezoidal plate toward the connecting frame, the pulley loses support when it moves to the inclined surface of the trapezoidal plate and moves downward. The downward movement of the pulley drives the heating plate and the slide rod to move downward. After the heating plate moves downward, it will be at the same horizontal plane as the connecting frame. The connecting frame will push the scrap steel on the heating plate into the recycling frame. The recycling frame moves toward the heating equipment so that the scrap steel pushed into the recycling frame by the connecting frame is spread out on the recycling frame little by little, preventing the scrap steel from piling up on the recycling frame at one time, causing the scrap steel to pile up too high and affecting subsequent processing. The scrap steel on the edge of the heating plate is pushed into the recycling frame by rotating the rotating plate, preventing the scrap steel from remaining on the edge of the heating plate, causing the scrap steel to be stuck between the heating plate and the preheating table when the heating plate is reset, affecting subsequent normal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the cross-sectional structure of the fixing frame of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the preheating table of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the heating plate of the present invention; Figure 5 This is a schematic diagram of the recovery frame and the connecting frame structure of the present invention; Figure 6 Schematic diagram of the cross-sectional structure of the connecting frame of the present invention; Figure 7 It is a structural schematic diagram of the connecting frame and the rotating plate of the present invention.

[0020] In the figure: 1. base; 2. fixing frame; 3. driving device; 4. heating equipment; 41. sealing cover; 5. preheating table; 51. air inlet; 6. waste heat recovery device; 7. heating plate; 71. sliding rod; 72. leakage hole; 8. pulley; 9. trapezoidal plate; 10. circular ring; 101. air inlet; 11. rotating plate; 12. sealing arc plate; 131. recovery cover; 132. hollow rod; 133. pulley rod; 134. baffle; 135. recovery frame; 136. protruding rod; 137. slide plate; 138. U-shaped frame; 139. discharge port; 141. connecting frame; 142. sliding rod; 143. rack; 144. gear; 145. tooth plate; 146. pushing frame; 147. L-shaped plate; 148. fixing block; 149. rotating plate; 1410. short plate. DETAILED DESCRIPTION

[0021] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] See also Figure 1-Figure 5 , one embodiment of the present invention is: a refining furnace scrap steel preheating charging device with energy recovery function, comprising: a base 1, a fixing frame 2, the fixing frame 2 is fixedly mounted on the top of the base 1; a driving device 3, the driving device 3 is arranged on the inner wall of the fixing frame 2; a heating device 4, the heating device 4 is fixedly mounted on the output end of the driving device 3, the driving device 3 is used to drive the heating device 4 to move up and down, and a sealing cover 41 is provided at the bottom of the heating device 4; the heating device 4 is an induction heating furnace, a preheating table 5, the preheating table 5 is slidably mounted on the top of the base 1, the preheating table 5 is made of high-temperature resistant material, an air inlet 51 is opened on the surface of the preheating table 5, the air inlet 51 passes through the preheating table 5 horizontally, and a driving wheel is provided at the bottom of the preheating table 5; the driving wheel is driven by a motor, a waste heat recovery device 6, the waste heat recovery device 6 is fixedly mounted on the surface of the heating device 4, the waste heat recovery device 6 is used to recover the heat generated by the heating equipment 4; a slide rod 71 is slidably installed at the bottom of the preheating table 5, and a heating plate 7 is fixedly installed at the bottom of the slide rod 71. A leakage hole 72 is opened on the surface of the heating plate 7, and impurities are recovered through the leakage hole 72. A recovery cover 131 is fixedly installed at the bottom of the heating plate 7, and the inner wall of the recovery cover 131 is a concave bowl shape. A pulley 8 is fixedly installed on the surface of the heating plate 7, and a trapezoidal plate 9 is fixedly installed on the inner wall of the base 1. The end of the trapezoidal plate 9 away from the preheating table 5 is provided with an inclined surface, and the pulley 8 slides on the top of the trapezoidal plate 9. The heat generated is recovered and reused through the waste heat recovery device 6, and the waste heat will enter through the air inlet 51 and then enter the interior of the preheating table 5 through the air inlet 101 to heat the side of the scrap steel to prevent the part of the scrap steel close to the inner wall of the preheating table 5 from being fully heated during the heating process, resulting in uneven heating and affecting the waste heat effect.

[0023] A circular ring 10 is slidably installed on the inner wall of the preheating table 5, and an air inlet hole 101 is opened on the surface of the circular ring 10. A sealing arc plate 12 is slidably installed on the top of the preheating table 5. A rotating plate 11 is rotatably installed on the inner wall of the circular ring 10. The end of the rotating plate 11 away from the circular ring 10 is rotatably installed on the inner wall of the sealing arc plate 12 to prevent heat from leaking out from between the preheating table 5 and the heating device 4 during heating, resulting in heat loss and affecting the heating effect.

[0024] A No. 1 spring is provided between the preheating table 5 and the slide bar 71, one end of the No. 1 spring is fixedly mounted on the top of the slide bar 71, and the other end of the No. 1 spring is fixedly mounted on the inner wall of the preheating table 5. When the pulley 8 is disengaged from the trapezoidal plate 9, the elastic force of the No. 1 spring itself will drive the slide bar 71 to move downward, and a No. 2 spring is provided between the preheating table 5 and the circular ring 10, one end of the No. 2 spring is fixedly mounted on the inner wall of the preheating table 5, and the other end of the No. 2 spring is fixedly mounted on the inner wall of the circular ring 10. When the circular ring 10 is disengaged from the sealing cover 41, the elastic force of the No. 2 spring itself will drive the circular ring 10 to move upward.

[0025] When this embodiment is working: by loading the scrap steel onto the preheating table 5, then starting the preheating table 5 to move toward the bottom of the heating device 4, and then starting the driving device 3 to move downward, the downward movement of the driving device 3 will drive the heating device 4 to move downward, and the preheating table 5 will be covered by the heating device 4. When the scrap steel inside the heating device 4 is heated, the heat generated during heating will enter the recovery cover 131 from the leakage hole 72 on the surface of the heating disk 7. The heat accumulates inside the recovery cover 131, which will cause the temperature inside the recovery cover 131 to rise. The temperature rise will be transmitted to the bottom of the heating disk 7. The temperature rise at the bottom of the heating disk 7 will cause the temperature of the part of the heating disk 7 that is in contact with the scrap steel to rise synchronously, thereby improving the heating effect on the bottom of the scrap steel. At the same time, the leakage hole 72 can allow impurities in the scrap steel to enter the recovery cover 131, recover the impurities, and prevent impurities from accumulating on the top of the heating disk 7. At the same time, when adding scrap steel, the initial position of the ring 10 will block the air inlet 51 to prevent slag from entering the air inlet 51 during the addition of scrap steel, causing the air inlet 51 to be blocked. The heat of the scrap steel is then transferred to the air inlet 101 through the air inlet 51, and the waste heat is then transferred to the air inlet 101 through the air inlet 51, thereby heating the scrap steel side. This prevents the scrap steel from being fully heated near the inner wall of the preheating table 5 during the heating process, resulting in uneven heating. At the same time, the downward movement of the ring 10 drives the rotating plate 11 to move downward, and the downward movement of the rotating plate 11 pulls the sealing arc plate 12 to move toward the heating device 4, thereby wrapping the heating device 4 through the sealing arc plate 12, thereby preventing heat from leaking out from between the preheating table 5 and the heating device 4 during heating, thereby causing heat loss and affecting the heating effect.

[0026] See also Figure 1-Figure 7On the basis of the above embodiment, in another embodiment of the present invention, a heating device for convenient heating and a recycling device for recycling scrap steel are provided on the base 1. The heating device includes a hollow rod 132, a pulley rod 133, a baffle 134, a recycling frame 135 and a protruding rod 136. A discharge port 139 is provided at the bottom of the recycling cover 131. The hollow rod 132 is fixedly mounted on the bottom of the heating plate 7. The pulley rod 133 is slidably mounted on the inner wall of the hollow rod 132. The baffle 134 is fixedly mounted on the surface of the pulley rod 133. The baffle 134 is fixedly mounted on the surface of the pulley rod 133. The plate 134 is consistent with the size of the discharge port, the recovery frame 135 is slidably installed on the inner wall of the base 1, and the protruding rod 136 is fixedly installed on the surface of the recovery frame 135. When the pulley 8 is driven by the heating plate 7 to move along the trapezoidal plate 9 in the direction away from the heating equipment 4, the pulley 8 loses support when it moves to the inclined surface of the trapezoidal plate 9 and moves downward. The downward movement of the pulley 8 will drive the heating plate 7 and the slide rod 71 to move downward. The downward movement of the heating plate 7 can effectively prevent the scrap steel inside the preheating table 5 from sticking to the ring 10, affecting the recycling of the scrap steel.

[0027] A slide plate 137 is slidably installed on the top of the recycling frame 135, and a U-shaped frame 138 is fixedly installed on the surface of the slide plate 137 to prevent the scrap steel from piling up too high, causing it to fall out of the recycling frame 135 later and affecting the recycling effect of the scrap steel.

[0028] A No. 3 spring is provided between the pulley rod 133 and the hollow rod 132, one end of the No. 3 spring is fixedly mounted on the inner wall of the hollow rod 132, and the other end of the No. 3 spring is fixedly mounted on the top of the pulley rod 133. When the pulley rod 133 is separated from the protruding rod 136, the elastic force of the No. 3 spring itself will drive the pulley rod 133 to reset. A No. 4 spring is provided between the recovery frame 135 and the slide plate 137, one end of the No. 4 spring is fixedly mounted on the top of the recovery frame 135, and the other end of the No. 4 spring is fixedly mounted on the bottom of the slide plate 137. When the slide plate 137 is separated from the recovery cover 131, the elastic force of the No. 4 spring itself will drive the slide plate 137 to reset.

[0029] The recovery device includes a connecting frame 141, a sliding rod 142, a rack 143, a gear 144, a tooth plate 145, a pushing frame 146 and an L-shaped plate 147. The connecting frame 141 is fixedly mounted on the inner wall of the base 1, the sliding rod 142 is slidably mounted on the inner wall of the connecting frame 141, the rack 143 is fixedly mounted on the surface of the sliding rod 142, the rack 143 is slidably mounted on the inner wall of the connecting frame 141, the gear 144 is rotatably mounted on the inner wall of the connecting frame 141, the tooth plate 145 is slidably mounted on the inner wall of the connecting frame 141, and the rack 143 is meshed with the surface of the gear 144. The gear 144 is meshed with the surface of the tooth plate 145, the pushing frame 146 is fixedly installed on the bottom of the tooth plate 145, the L-shaped plate 147 is slidably installed on the surface of the recycling frame 135, the L-shaped plate 147 slides up and down along the recycling frame 135, and the L-shaped plate 147 is in contact with the surface of the pushing frame 146. The recycling frame 135 moves toward the direction close to the heating equipment 4, so that the connecting frame 141 pushes the scrap steel on the recycling frame 135 and spreads it flat on the recycling frame 135 little by little, preventing the scrap steel from piling up on the recycling frame 135 at one time, causing the scrap steel to pile up too high and affecting subsequent processing.

[0030] A fixed block 148 is fixedly installed on the surface of the pushing frame 146, and a rotating plate 149 is rotatably installed on the bottom of the connecting frame 141. A short plate 1410 is fixedly installed on the surface of the rotating plate 149 to prevent scrap steel from remaining on the edge of the heating plate 7, causing the scrap steel to be stuck between the heating plate 7 when it is reset, affecting subsequent normal work.

[0031] A No. 5 spring is arranged between the L-shaped plate 147 and the recovery frame 135, one end of the No. 5 spring is fixedly mounted on the surface of the L-shaped plate 147, and the other end of the No. 5 spring is fixedly mounted on the surface of the recovery frame 135. The No. 5 spring drives the L-shaped plate 147 to reset, and a No. 6 spring is arranged between the rack 143 and the connecting frame 141, one end of the No. 6 spring is fixedly mounted on the surface of the rack 143, and the other end of the No. 6 spring is fixedly mounted on the surface of the connecting frame 141. When the U-shaped frame 138 is disengaged from the sliding rod 142, the elastic force of the No. 6 spring itself will drive the rack 143 to reset, and a No. 1 torsion spring is arranged between the connecting frame 141 and the rotating plate 149. When the short plate 1410 is disengaged from the fixed block 148, the No. 1 torsion spring will drive the rotating plate 149 to reset.

[0032] When this embodiment is working: after the scrap steel heating is finished, the preheating table 5 will move toward the direction close to the recycling frame 135. The movement of the preheating table 5 toward the direction close to the recycling frame 135 will drive the pulley 8 to move along the trapezoidal plate 9. When the pulley 8 moves to the inclined surface of the trapezoidal plate 9, the pulley 8 loses the support of the trapezoidal plate 9 and moves downward. The downward movement of the pulley 8 will drive the heating plate 7 to move downward. The downward movement of the heating plate 7 will also cause the scrap steel to break away from the contact with the ring 10, preventing the scrap steel from sticking to the ring 10 and affecting the recycling of the scrap steel. At the same time, when the heating plate 7 moves toward the direction close to the recycling frame 135, it will drive the recovery cover 131 to move toward the direction close to the recycling frame 135. The movement of the recovery cover 131 toward the direction close to the recycling frame 135 will drive the pulley rod 133 to move toward the direction close to the recycling frame 135. The pulley rod 133 moves toward the direction close to the recycling frame 135 and contacts When the scrap iron chips are recycled, the scrap iron chips are prevented from filling up the recycling cover 131 and affecting the heat circulation. At the same time, the movement of the recycling cover 131 in the direction away from the heating equipment 4 will push the slide plate 137 to move in the direction away from the heating equipment 4. The movement of the slide plate 137 in the direction away from the heating equipment 4 will push the U-shaped frame 138 in the direction away from the heating equipment 4 to flatten the scrap iron accumulated too high on the recycling frame 135, preventing the scrap iron from accumulating too high, causing it to fall out of the recycling frame 135 later, affecting the recycling effect of the scrap iron.

[0033] When the heating plate 7 drives the pulley 8 to move along the trapezoidal plate 9 toward the connecting frame 141, the pulley 8 moves to the inclined surface of the trapezoidal plate 9 and loses its support, and the pulley 8 moves downward. The downward movement of the pulley 8 drives the heating plate 7 and the sliding rod 71 to move downward. After the heating plate 7 moves downward, it will be in the same horizontal plane with the connecting frame 141. When the heating plate 7 moves in the direction of the connecting frame 141, the connecting frame 141 will push the scrap steel on the heating plate 7 into the recycling frame 135, and at the same time, the U-shaped frame 138 moves in the direction away from the heating device 4, pushing the sliding rod 142 to move away from the heating device 4. The sliding rod 142 moves in the direction away from the heating device 4, which pushes the rack 143 to move in the direction away from the heating device 4. The rack 143 moves in the direction away from the heating device 4, which pushes the gear 144 to rotate. The rotation of the gear 144 drives the tooth plate 145 to move in the direction close to the heating device 4. The tooth plate 145 moves in the direction close to the heating device 4, which drives the push frame 146 to move in the direction close to the heating device 4. The push frame 146 moves in the direction close to the heating device 4, which pushes the L-shaped plate 147 to move in the direction close to the heating device 4. The L-shaped plate 147 moves in the direction of the heating device 4, and the L-shaped plate 147 moves in the direction close to the heating device 4, which drives the recycling frame 135 to move in the direction close to the heating device 4. The recycling frame 135 moves in the direction close to the heating device 4, so that the connecting frame 141 pushes the scrap steel on the recycling frame 135 and spreads it on the recycling frame 135 little by little, preventing the scrap steel from piling up on the recycling frame 135 at one time, causing the scrap steel to pile up too high and affect subsequent processing. At the same time, the pushing frame 146 moves in the direction close to the heating device 4, which drives the fixing block 148 to move in the direction close to the heating device 4. The movement of the fixed block 148 toward the direction close to the heating equipment 4 will push the short plate 1410 to rotate, and the rotation of the short plate 1410 will drive the rotating plate 149 to rotate. The rotation of the rotating plate 149 will push the scrap steel on the edge of the heating disk 7 into the recovery frame 135 to prevent the scrap steel from remaining on the edge of the heating disk 7, causing the scrap steel to be stuck between the heating disk 7 and the preheating table 5 when the heating disk 7 is reset, affecting the subsequent normal operation. When the recovery frame 135 needs to be taken out, the L-shaped plate 147 can be pulled downward to disengage from the push frame 146, and then the recovery frame 135 can be pulled out.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A scrap steel preheating and charging device for a refining furnace with an energy recovery function, which is a heating device for preheating scrap steel, comprising: The base (1) is characterized by: A fixing frame (2), wherein the fixing frame (2) is fixedly mounted on the top of the base (1); A driving device (3), wherein the driving device (3) is arranged on an inner wall of the fixing frame (2); A heating device (4), wherein the heating device (4) is fixedly mounted on an output end of a driving device (3), the driving device (3) is used to drive the heating device (4) to move up and down, a sealing cover (41) is provided at the bottom of the heating device (4), and the heating device (4) is an induction heating furnace; A preheating table (5), wherein the preheating table (5) is slidably mounted on the top of the base (1), the preheating table (5) is made of a high-temperature resistant material, and an air inlet (51) is provided on the surface of the preheating table (5); A waste heat recovery device (6), the waste heat recovery device (6) is fixedly mounted on the surface of the heating device (4), and the waste heat recovery device (6) is used to recover heat generated by the heating device (4); A slide rod (71) is slidably mounted on the bottom of the preheating table (5), a heating plate (7) is fixedly mounted on the bottom of the slide rod (71), a leakage hole (72) is provided on the surface of the heating plate (7), a pulley (8) is fixedly mounted on the surface of the heating plate (7), a trapezoidal plate (9) is fixedly mounted on the inner wall of the base (1), an inclined surface is provided at one end of the trapezoidal plate (9) away from the heating table (5), the pulley (8) is slidably mounted on the top of the trapezoidal plate (9), and a heating device for convenient heating and a recycling device for recycling scrap steel are provided on the base (1).

2. The scrap steel preheating and charging device for a refining furnace with an energy recovery function according to claim 1, characterized in that: A circular ring (10) is slidably mounted on the inner wall of the preheating table (5), an air inlet hole (101) is provided on the surface of the circular ring (10), a sealing arc plate (12) is slidably mounted on the top of the preheating table (5), a rotating plate (11) is rotatably mounted on the inner wall of the circular ring (10), and an end of the rotating plate (11) away from the circular ring (10) is rotatably mounted on the inner wall of the sealing arc plate (12).

3. The scrap steel preheating and charging device for a refining furnace with an energy recovery function according to claim 2, characterized in that: The heating device comprises a recovery cover (131), a hollow rod (132), a pulley rod (133), a baffle (134), a recovery frame (135) and a protruding rod (136), wherein the recovery cover (131) is fixedly mounted on the bottom of the heating plate (7), the inner wall of the recovery cover (131) is in a concave bowl shape, a discharge port (139) is provided at the bottom of the recovery cover (131), the hollow rod (132) is fixedly mounted on the bottom of the heating plate (7), the pulley rod (133) is slidably mounted on the inner wall of the hollow rod (132), the baffle (134) is fixedly mounted on the surface of the pulley rod (133), the recovery frame (135) is slidably mounted on the inner wall of the base (1), and the protruding rod (136) is fixedly mounted on the surface of the recovery frame (135).

4. The scrap steel preheating and charging device for a refining furnace with an energy recovery function according to claim 3, characterized in that: A slide plate (137) is slidably mounted on the top of the recovery frame (135), and a U-shaped frame (138) is fixedly mounted on the surface of the slide plate (137).

5. The scrap steel preheating and charging device for a refining furnace with an energy recovery function according to claim 4, characterized in that: The recovery device comprises a connecting frame (141), a sliding rod (142), a rack (143), a gear (144), a tooth plate (145), a pushing frame (146) and an L-shaped plate (147), wherein the connecting frame (141) is fixedly mounted on the inner wall of the base (1), the sliding rod (142) is slidably mounted on the inner wall of the connecting frame (141), the rack (143) is fixedly mounted on the surface of the sliding rod (142), the rack (143) is slidably mounted on the inner wall of the connecting frame (141), the gear (144) is rotatably mounted on the inner wall of the connecting frame (141), the tooth plate (145) is slidably mounted on the inner wall of the connecting frame (141), the rack (143) is meshed with the surface of the gear (144), the gear (144) is meshed with the surface of the tooth plate (145), the pushing frame (146) is fixedly mounted on the bottom of the tooth plate (145), and the L-shaped plate (147) is slidably mounted on the surface of the recovery frame (135).

6. The scrap steel preheating and charging device for a refining furnace with an energy recovery function according to claim 5, characterized in that: A fixed block (148) is fixedly mounted on the surface of the pushing frame (146), a rotating plate (149) is rotatably mounted on the bottom of the connecting frame (141), a short plate (1410) is fixedly mounted on the surface of the rotating plate (149), and the L-shaped plate (147) is in contact with the surface of the pushing frame (146).

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