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CN-122015486-A - Scrap steel preheating and feeding device with energy recovery function for refining furnace

CN122015486ACN 122015486 ACN122015486 ACN 122015486ACN-122015486-A

Abstract

The invention belongs to the technical field of scrap steel refining preheating equipment, in particular to a scrap steel preheating and feeding device of a refining furnace with an energy recovery function, which comprises a preheating furnace body, wherein a mounting plate is arranged above the preheating furnace body, a transverse movable square baffle is arranged above the mounting plate and is used for storing materials, a driving part is arranged above the mounting plate and is used for driving the square baffle to move, a resetting part is arranged above the mounting plate, and a movable plugging plate is arranged on one side of the resetting part.

Inventors

  • WANG YUANLI
  • HE JIANSHENG

Assignees

  • 绍兴市元丽再生资源回收有限公司

Dates

Publication Date
20260512
Application Date
20260127

Claims (9)

  1. 1. The utility model provides a refining furnace steel scrap preheating feeding device with energy recovery function, includes preheating furnace body (1), its characterized in that, mounting panel (2) are installed to the top of preheating furnace body (1), but the top of mounting panel (2) is provided with horizontal movement's back form baffle (3), back form baffle (3) are used for depositing the material, drive division (4) are installed to the top of mounting panel (2), drive division (4) are used for driving the removal of back form baffle (3), reset portion (6) are installed to the top of mounting panel (2), movable shutoff board (5) are installed to one side of reset portion (6), shutoff board (5) are used for installing the material back form baffle (3) top after back form baffle (3) the top, material leakage groove (11) have been seted up to the top of preheating furnace body (1), mounting panel (2) are located material leakage groove (11) department and have been seted up two (21) for when material leakage groove (3) move to two (21), make material leakage groove (3) drop to the place (7) and be used for the interior of the preheating furnace body (1) is used for taking out the material (7) and is located in the place (1) and is used for the place of the back form (1) and is used for the place of taking place (1) and is used for the place (7) and is used for the place in the place (1, be used for preliminary heating to the material, shielding plate (9) are installed to one side that returns shape baffle (3) to lie in reset portion (6), shielding plate (9) are used for leaking the shielding of bin two (21) department top when returning shape baffle (3) and not removing to bin two (21) department.
  2. 2. The refining furnace steel scrap preheating and feeding device with the energy recovery function according to claim 1, wherein the reset part (6) comprises a lifting plate (61) arranged above the mounting plate (2), a sliding rod (62) is arranged on one side of the lifting plate (61), a sliding block (63) is connected to the surface of the sliding rod (62) in a sliding manner, the bottom of the sliding block (63) is connected with the upper side of the plugging plate (5), a resisting plate (51) is arranged at the bottom of the plugging plate (5), the resisting plate (51) is used for being in contact with the side edge of the plugging plate (3) when the returning baffle (3) moves to the position of the second leakage groove (21), the plugging plate (5) is arranged above the returning baffle (3) and used for shielding the upper side of the returning baffle (3) and preventing the hot air in the returning baffle (3).
  3. 3. The scrap steel preheating and feeding device for the refining furnace with the energy recovery function according to claim 2, wherein a return spring (64) is installed between the lifting plate (61) and the sliding block (63), the return spring (64) is sleeved on the surface of the sliding rod (62), a limiting head (65) is installed at the end part of the sliding rod (62), and when the return baffle (3) is reset to an initial state under the driving of the driving part (4), the blocking plate (5) is limited, so that the blocking plate (5) is separated from the upper part of the return baffle (3) for subsequent feeding and discharging of heated gas.
  4. 4. The scrap steel preheating and feeding device with the energy recovery function for the refining furnace according to claim 1, wherein the driving part (4) comprises a connecting plate (41), a servo motor (42), a threaded rod (43) and a threaded seat (44), the connecting plate (41) is installed above the mounting plate (2), the servo motor (42) is installed at the side wall of the connecting plate (41), the output end of the servo motor (42) is connected with the threaded rod (43), the threaded rod (43) is rotatably connected with the connecting plate (41) through a bearing, the threaded seat (44) is installed on the peripheral wall of the threaded rod (43) and is in threaded connection with the threaded rod, one end of the threaded seat (44) is connected with one end of the square baffle (3) and used for driving the square baffle (3) to transversely move, a guide rod (45) is further installed at the side wall of the connecting plate (41), and the guide rod (45) penetrates through the threaded seat (44).
  5. 5. The steel scrap preheating and feeding device with the energy recovery function for the refining furnace according to claim 1, wherein the air extracting part (7) comprises an air extracting pump (71), a filtering part (74) and a conveying hose (75), the air extracting pump (71) is arranged at the outer wall of the preheating furnace body (1), an air extracting pipe (72) is arranged at the air inlet part of the air extracting pump (71), the air extracting pipe (72) is inserted into the preheating furnace body (1), an air duct (73) is arranged at the air outlet part of the air extracting pump (71), the filtering part (74) is arranged between the air duct (73) and the conveying hose (75) and is communicated with the air duct (73) and the conveying hose (75) for filtering extracted hot air, the conveying hose (75) extends to one side of the reflux baffle (3), a plurality of spray heads (77) are arranged at the end part of the conveying hose (75), and a plurality of spray heads (76) penetrate through the outer wall part of the reflux baffle (3) and are connected with the air outlet pipe (77) for preheating the reflux baffle (3) into the preheating furnace body (1).
  6. 6. The refining furnace steel scrap preheating and feeding device with the energy recovery function according to claim 5, wherein the filtering part (74) comprises a barrel (741), a barrel cover (742) and a filter element (744), the barrel (741) is fixed with the air duct (73), the barrel cover (742) is arranged on one side of the barrel (741) and is movable, the filter element (744) is arranged in the barrel (741) and is used for filtering extracted hot air, a sealing ring (743) is arranged at the inner wall of the barrel cover (742), and the sealing ring (743) is inserted into the barrel (741) and contacts with the filter element (744) for sealing the barrel (741) and the barrel cover (742).
  7. 7. The scrap steel preheating and feeding device for a refining furnace with an energy recovery function according to claim 6, wherein the air extraction part (7) further comprises a fixing plate (78), a pipe joint (751) is installed at the end of the conveying hose (75), the fixing plate (78) is used for supporting the pipe joint (751), a telescopic rod (752) is installed at the end of the pipe joint (751), the telescopic rod (752) is connected with a cylinder cover (742), and a limiting spring (781) is installed between the cylinder cover (742) and the fixing plate (78) and used for elastically supporting the cylinder cover (742).
  8. 8. The scrap steel preheating and feeding device with the energy recovery function for the refining furnace according to claim 1, wherein a stirring part (8) is arranged in the square baffle plate (3), the stirring part (8) is used for turning materials, the stirring part (8) comprises a stirring rod (81) and stirring blades (82), the stirring rod (81) is rotatably connected with the inner wall of the square baffle plate (3) through a bearing, and the stirring blades (82) are arranged at the peripheral wall of the stirring rod (81) and are arranged in a plurality of parts.
  9. 9. The scrap steel preheating and feeding device with the energy recovery function for the refining furnace according to claim 8, wherein the stirring part (8) further comprises a rotating rod (83) arranged at the end part of the stirring rod (81) and extending out of the square baffle plate (3), a fluted disc (84) is arranged on the surface of the rotating rod (83), a rack (85) is arranged above the mounting plate (2), and the fluted disc (84) is connected with the rack (85) in a meshed manner and is used for driving the stirring rod (81) to rotate when the square baffle plate (3) moves transversely.

Description

Scrap steel preheating and feeding device with energy recovery function for refining furnace Technical Field The invention relates to the technical field of scrap steel refining and preheating equipment, in particular to a scrap steel preheating and feeding device of a refining furnace with an energy recovery function. Background In the iron and steel smelting industry, a refining furnace is one of key equipment for further purifying and refining molten iron to produce high-quality steel. The scrap steel is used as an important raw material of the refining furnace, and the adding mode and the preheating treatment of the scrap steel have critical influences on the production efficiency, the energy consumption and the steel quality of the refining furnace. The traditional scrap steel feeding mode of the refining furnace generally comprises the step of directly feeding scrap steel into the refining furnace, and the mode has a plurality of defects. Because the temperature of the scrap steel is lower, a large amount of heat can be absorbed after the scrap steel is added into the refining furnace, so that the temperature in the furnace is rapidly reduced, the energy consumption is increased, and the smelting rhythm and efficiency are influenced. To compensate for the effect of temperature drop, a large amount of fuel is required to be consumed additionally to reheat the materials in the furnace, which further aggravates the waste of energy and the increase of production cost. Most of the existing scrap steel feeding devices do not consider preheating treatment of scrap steel, or preheating mode is poor in effect. In the process of directly adding the scrap steel into the refining furnace, a large amount of heat is absorbed by the scrap steel for heating, and the heat can be used for other production links or maintaining the temperature in the furnace stable. For example, in large ferrosteel enterprises, the refining furnace is required to process a large amount of scrap every day, and the heat loss caused by the addition of scrap every day is considerable due to the lack of an effective energy recovery mechanism, which results in a large waste of energy and high production cost. Meanwhile, although some existing preheating devices can preheat the scrap steel to a certain extent, hot air generated in the preheating process is often not fully utilized, but is directly discharged into the environment, so that the energy utilization rate is further reduced. For example, some preheating furnaces carry a lot of heat with the hot air generated in the furnace when preheating scrap steel, but this hot air is wasted and no effective recovery of energy is achieved because there is no reasonable recovery and utilization system. Part of the existing scrap steel preheating devices have defects in structural design, so that scrap steel is heated unevenly in the preheating process. For example, some preheating furnaces adopt a simple heating mode, and the heat distribution is uneven, so that the temperature difference of different parts of the scrap steel is large. When the scrap steel with uneven preheating is added into a refining furnace, the temperature uniformity of materials in the furnace can be affected, and the smelting reaction and the quality of steel are further affected. In steel production, temperature uniformity is one of the key factors for ensuring uniformity of steel properties. If the scrap steel is preheated unevenly, the local temperature in the refining furnace is too high or too low, so that the chemical components in the steel are unevenly distributed, the defects of segregation and the like are generated, and the mechanical property and the quality stability of the steel are reduced. This not only affects the usability of the steel, but also increases the difficulty and cost of subsequent processing. Disclosure of Invention In order to solve the problems, the invention provides a scrap steel preheating and feeding device with an energy recovery function for a refining furnace, so as to solve the problems in the background art more exactly. The invention is realized by the following technical scheme: The invention provides a scrap steel preheating and feeding device with an energy recovery function for a refining furnace, which comprises a preheating furnace body, wherein a mounting plate is arranged above the preheating furnace body, a return baffle capable of transversely moving is arranged above the mounting plate, the return baffle is used for storing materials, a driving part is arranged above the mounting plate and is used for driving the return baffle to move, a reset part is arranged above the mounting plate, one side of the reset part is provided with a movable blocking plate, the blocking plate is used for blocking the upper part of the return baffle after the return baffle is filled with the materials, a first leakage groove is formed in the upper part of the preheating furnace body, a second l