Feeding device of heating furnace

Abstract

The invention discloses a heating furnace feeding device, and belongs to the technical field of heating furnaces. The device mainly comprises a conveyor, wherein an auxiliary plate is arranged on the conveyor; a sealing cover is mounted on the mounting plate, a one-way valve is arranged on the sealing cover, a limiting ring is mounted on the one-way valve through a bearing, and fan blades are mounted on the limiting ring; a first gear is mounted on the connecting shaft, a first guide rod is mounted in the sealing cover, a first guide rail is mounted on the first guide rod, and a first rack is slidably mounted on the first guide rail; a protruding part is installed on the side face of the first rack. A storage tank is installed at one end of the connecting shaft, a connecting pipe is arranged at one end of the storage tank, an air nozzle is installed on the storage tank, the storage tank is sleeved with a sealing sleeve, and a plurality of sets of air outlet pipes are installed on the sealing sleeve. According to the feeding device of the heating furnace, resource utilization is optimized through the functions of automatic air exhaust and accurate air inflation in the discharging process of the heating furnace, metal bar oxidation prevention, uniform discharging, air re-entering prevention and the like.

Description

Technical Field

[0001] The present application relates to the technical field of heating furnaces, and in particular to a feeding device for a heating furnace. Background Art

[0002] Tunnel gas heating furnace is an industrial equipment that uses gas combustion to generate heat and continuously heat materials. The gas is mixed with air in the burner and ignited to produce high-temperature flames and hot flue gas, which transfer heat to the workpiece through radiation and convection heat transfer. Heat is transferred inside the workpiece through heat conduction, which increases the overall temperature of the workpiece. The gas heating furnace usually includes a furnace shell structure, a heating system, a conveying system, a temperature control system and other parts; during heating, components such as a mechanical arm or a conveyor belt start to move, and the metal rods located in the loading area are grabbed or conveyed to the starting end of the conveying system one by one. The conveying system ensures that the metal rods are conveyed stably in the heating furnace at a set uniform speed. At the same time, the gas supply system and air supply system of the heating furnace also start to work. When the gas and air are conveyed to the burner according to the set ratio, the ignition device starts to work. After the metal rods are heated in the heating zone and the insulation zone in the heating furnace, with the operation of the conveying system, the metal rods are conveyed to the discharge end of the heating furnace, and a gas nozzle is installed at the discharge end of the heating furnace to spray inert gas evenly on the surface of the metal rods to prevent oxidation of the surface of the heated metal rods; In the actual operation process of the heating furnace, a common method to prevent the surface oxidation of the metal rod after heating is to continuously fill it with inert gas during the discharge and conveying process to form a protective atmosphere that isolates oxygen. Although this method can effectively prevent the oxidation of the metal rod, it has certain disadvantages. On the one hand, the inert gas is always in an inflated state, which will cause a large amount of inert gas waste and increase production costs. On the other hand, continuous inflation may cause unstable air pressure in the discharge and conveying device, affecting the smoothness of the discharge of the metal rod, and may even cause a certain amount of pressure on the sealing of the equipment, shortening the service life of the equipment. Therefore, it is necessary to provide a heating furnace feeding device to solve the above problems.

[0003] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0004] Based on the above-mentioned problems existing in the prior art, the problem to be solved by the present application is: to provide a heating furnace feeding device, which realizes the functions of automatic air extraction and precise inflation in the process of discharging materials from the heating furnace to prevent oxidation of metal rods, uniform material discharge and prevention of air from entering again, thereby improving the degree of operation automation and production continuity, optimizing resource utilization, ensuring product quality and equipment stability, and meeting the requirements of different production processes.

[0005] The technical solution adopted by the present application to solve its technical problems is: a feeding device for a heating furnace, characterized in that it comprises: a conveyor, a furnace shell is installed on the conveyor, and the conveyor has an auxiliary plate; an exhaust mechanism, which is installed on the auxiliary plate, and the exhaust mechanism comprises: a mounting plate, which is installed on the auxiliary plate, the mounting plate is tilted, a sealing cover is installed on the mounting plate, a one-way valve is installed through the side wall of the sealing cover, an annular step is provided on the end of the one-way valve extending into the sealing cover, a limiting ring is installed on the bearing on the annular step, and a fan blade is installed on the limiting ring; a connecting shaft is slidably installed at the center of the fan blade, two groups of guide bars are symmetrically installed on the connecting shaft, a first gear is installed at one end of the connecting shaft, a first guide rod is installed on the inner wall of the sealing cover, a placement groove is opened on the first guide rod, a first guide rail is fixedly installed on the placement groove, and a A first rack is slidably installed; a connecting plate is installed on the side of the first rack, and a protrusion is installed on the bottom surface of the connecting plate; a connecting shaft is installed at one end of the connecting shaft, a storage tank is installed at one end of the connecting shaft, and a connecting pipe is installed at the other end of the storage tank, a plurality of groups of air nozzles are arranged and installed on the storage tank, a sealing sleeve is movably sleeved on the storage tank, and a plurality of groups of air outlet pipes are arranged and installed on the sealing sleeve, and the number of the air outlet pipes is consistent with the number of the air nozzles; two groups of brackets are symmetrically installed at one end of the sealing sleeve, a fixed pipe is connected between the two groups of brackets, one end of the fixed pipe passes through the sealing cover, and a second gear is sleeved on the fixed pipe; a driving mechanism, which is installed inside the sealing cover, and the driving mechanism includes: a second guide rod, which is installed in the sealing cover, a storage groove is opened on the second guide rod, a second guide rail is fixedly installed on the storage groove, and a second rack is slidably installed on the second guide rail.

[0006] Furthermore, the first rack is composed of a first smooth section located on the left, a first meshing tooth section located in the middle and a second smooth section located on the right. In the initial state, the first gear is located at the position of the second smooth section on the first rack, and the first gear is close to the first meshing tooth.

[0007] Furthermore, a first limiting rod is installed on one end of the first rack close to the furnace shell, the first limiting rod penetrates the furnace shell and extends into the furnace shell, a first spring is connected between the first rack and the furnace shell, and the first spring is sleeved on the first limiting rod.

[0008] Furthermore, the distance between the second rack and the furnace shell is smaller than the distance between the first rack and the furnace shell. The second rack is composed of a first smooth portion located on the left, a second meshing tooth located in the middle and a second smooth portion located on the right. In the initial state, the second gear is located at the position of the second smooth portion on the second rack.

[0009] Furthermore, a second limiting rod is fixedly installed on one end of the second rack close to the furnace shell, the second limiting rod passes through the furnace shell and extends into the furnace shell, a second spring is connected between the furnace shell and the second limiting rod, the second spring is sleeved on the second limiting rod, and the other end of the connecting plate is fixedly connected to the side of the second rack.

[0010] Furthermore, a material unloading port is provided on the mounting plate, and a material unloading mechanism is installed on the bottom surface of the mounting plate. The material unloading mechanism includes a material unloading box fixedly installed on the bottom surface of the mounting plate, and a first material unloading plate is fixedly installed on one end of the inner wall of the material unloading box. The first material unloading plate is inclined, and there is a certain distance between one end of the first material unloading plate and the inner wall of the material unloading box.

[0011] Furthermore, a second material removal plate is installed on the inner wall of the material removal box directly below the first material removal plate. The second material removal plate is inclined, and a guide plate is installed at the inclined bottom end of the second material removal plate. There is a certain distance between the guide plate and the inner wall of the material removal box.

[0012] Furthermore, two sets of feed wheels are installed on the bearings of the discharge box, and there is a certain distance between the two sets of feed wheels. A rotating shaft is connected between the two sets of feed wheels, and a motor is installed on the rotating shaft through a coupling. A discharge port is provided on the outer side of the discharge box, and multiple sets of storage grooves are provided on the circumference of the feed wheel, and the storage grooves are semicircular grooves.

[0013] Furthermore, a disengaging mechanism is installed on the side of the first rack, and the disengaging mechanism includes a first push plate installed on the side of the first rack, a third rack is slidably installed on the inner wall side of the sealing cover, a first opening groove is opened on the left side of the third rack, the first push plate is in the first opening groove and close to the opening position of the first opening groove, two groups of connecting frames are installed on the connecting shaft, one end of the two groups of connecting frames is connected to a fixed sleeve, a rotating sleeve is installed on the bearing of the fixed sleeve, a screw rod is fixedly installed on the rotating sleeve, the screw rod passes through the sealing cover, the screw rod is transmission-connected with a third gear, and the side of the third gear is connected to the inner wall bearing of the sealing cover.

[0014] Furthermore, a sliding rod is installed on the inner wall of the sealing cover, a sliding block is slidably installed on the sliding rod, a sleeve rod is connected to the bearing on the connecting shaft, one end of the sleeve rod is connected to the sliding block, a second push plate is also fixedly installed on the side of the first rack, a second opening groove is opened at the other end of the first rack, the length of the second opening groove is smaller than the length of the first opening groove, in an initial state, the second push plate is fitted on one end of the inner wall of the second opening groove, and a Y-shaped tube is fixedly installed on one end of the one-way valve.

[0015] The beneficial effect of the present application is as follows: a heating furnace feeding device provided by the present application utilizes the kinetic energy of the metal rod discharging, pushes the protrusion through the metal rod, drives the first rack to slide, and makes the first meshing tooth on the first rack mesh with the first gear, thereby driving the connecting shaft to rotate, so that the fan blades rotate to extract the air in the sealing cover, and form an oxygen-isolated environment when the metal rod is discharged to prevent oxidation, and no additional power source is required, thereby improving energy utilization efficiency; at the same time, when the first rack completely passes over the first gear, the second rack meshes with the second gear, driving the sealing sleeve to rotate, so that the gas nozzle is connected to the gas outlet pipe, and the inert gas is filled into the sealing cover, and based on the rack segmentation design and the gear spacing, the inflation timing is accurately controlled to make the inert gas evenly distributed.

[0016] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is an overall schematic diagram of a heating furnace feeding device in this application; Figure 2 for Figure 1 Schematic diagram of the local structure; Figure 3 for Figure 2 Schematic diagram of the conveyor structure; Figure 4 for Figure 3 Schematic diagram of the sealing cover structure; Figure 5 for Figure 2 Schematic diagram of the local structure in; Figure 6 for Figure 5 A magnified schematic diagram of the middle A area; Figure 7 for Figure 5 Schematic diagram of the bottom structure; Figure 8 for Figure 5 Schematic diagram of the air extraction mechanism structure; Fig. 9 for Figure 5 A magnified schematic diagram of the middle B area; Fig.10 for Figure 8 Enlarged schematic diagram of the middle C area; Fig.11 for Figure 1 Schematic diagram of the structure of the middle and lower feeding mechanism; Among them, the reference numerals in the figure are: 1. Conveyor; 11. Furnace shell; 13. Gas supply pipeline; 14. Air supply device; 2. Vacuum mechanism; 21. Mounting plate; 22. Sealing cover; 23. Storage tank; 24. Connecting pipe; 25. Air nozzle; 26. Sealing sleeve; 27. Air outlet pipe; 28. Connecting shaft; 29. ​​First gear; 210. First guide rod; 211. First rack; 212. Placement groove; 213. First guide rail; 214. First limiting rod; 215. First spring; 216. Fixed pipe; 217. Second gear; 218. Bracket; 220. Connecting plate; 221. Protrusion; 222. Connecting shaft; 223. Fan blade; 224. Limiting ring; 225. One-way valve; 226. Step; 227. Guide bar; 228. Y-shaped pipe; 229. Feeding port; 3. driving mechanism; 31. second guide rod; 32. storage slot; 33. second rack; 34. second guide rail; 35. second limiting rod; 36. second spring; 4. Distancing mechanism; 41. First push plate; 42. Third rack; 43. First opening slot; 44. Second opening slot; 45. Second push plate; 46. Connecting frame; 47. Fixed sleeve; 48. Rotating sleeve; 49. Screw rod; 410. Third gear; 411. Sleeve connecting rod; 412. Sliding rod; 413. Sliding block; 5. Material unloading mechanism; 51. Material unloading box; 52. First material unloading plate; 53. Second material unloading plate; 54. Guide plate; 55. Feeding wheel; 56. Rotating shaft; 57. Material storage trough. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0020] Embodiment 1: This embodiment describes the structure and working principle of a heating furnace feeding device, specifically: like Figure 1-Figure 4 and Fig.11As shown, the present application provides a heating furnace feeding device, including a conveyor 1, the conveyor 1 is used to carry and convey materials to move in the furnace, and a furnace shell 11 is installed on the conveyor 1, the furnace shell 11 can be a steel structure, such as steel plates and steel sections welded together, and a furnace lining (not shown in the figure) is installed in the furnace shell 11, the furnace lining is usually made of fiber structure and refractory bricks, and the inner layer is isolated by steel plates; Furnace doors (not shown) are provided on both sides of the furnace shell 11, which are used for the entry and exit of materials, and are provided with sealing devices, such as sealing strips or sealing pads, to reduce the leakage of hot air in the furnace and the entry of cold air from the outside, thereby improving heating efficiency and reducing heat loss; A gas burner (not shown in the figure) is fixedly installed at the bottom of the furnace shell 11, and the gas burner is suitable for mixing gas and air and igniting to generate high-temperature flames and hot flue gas to provide heat for the furnace, and a gas supply pipeline 13 is installed on the furnace shell 11, and the gas supply pipeline 13 is suitable for transporting gas from a gas source to the burner; An air supply device 14 is installed on the furnace shell 11. The air supply device 14 is composed of a fan and an air duct. The fan sucks in external air and transports it to the burner through the air duct to mix with the gas for combustion. At the same time, a temperature sensor (not shown in the figure) is installed in the furnace shell 11 to monitor the temperature in the furnace in real time. Before the heating work starts, the staff needs to transport the metal bars to be heated to the loading area next to the heating furnace. After the operator starts the loading equipment, the mechanical arm and other parts of the equipment start to move, and the metal bars in the loading area are grabbed or transported to the starting end of the conveyor 1 one by one; When the metal rod is placed at the starting end of the conveyor 1, the conveyor 1 starts to operate under the drive of the motor. For a heating furnace using a chain belt or mesh belt conveyor, the metal rod is conveyed forward along with the movement of the chain belt or mesh belt. At the same time as the metal rods start to be transported, the gas supply pipeline 13 and air supply device 14 of the heating furnace also start to work. Gas (such as natural gas, liquefied petroleum gas, etc.) is transported from the gas source to the heating furnace through the pipeline. The valves, filters, pressure regulators and other devices installed on the pipeline will accurately control the flow, pressure and quality of the gas to ensure that the gas is transported to the burner at a stable pressure and flow; at the same time, the air is transported to the burner by the fan through the air duct; After the metal rod is heated in the heating furnace, as the conveyor 1 operates, the metal rod is transported to the discharge end of the heating furnace, and inert gas is continuously injected during the transportation process to form a protective atmosphere that isolates oxygen. When the metal rod is transported out of the discharge port of the heating furnace, it will directly fall onto the external discharge collection device.

[0021] Example 2: In the actual operation process of the heating furnace, a common method to prevent the surface oxidation of the metal rod after heating is to continuously fill it with inert gas during the material discharging and conveying process to form a protective atmosphere that isolates oxygen. Although this method can effectively prevent the oxidation of the metal rod, it has certain disadvantages. The inert gas is always in a state of inflation, which will cause a large amount of inert gas waste and increase production costs; In order to solve the above problems, Figure 4-Figure 7 As shown, the conveyor 1 has an auxiliary plate (not shown in the figure), on which an air extraction mechanism 2 is mounted, and the air extraction mechanism 2 includes a mounting plate 21 fixedly mounted on the auxiliary plate, the mounting plate 21 being arranged in a direction away from the conveyor 1 in an inclined manner, and the mounting plate 21 can guide and transport the heated metal rod; Meanwhile, a sealing cover 22 is fixedly mounted on the mounting plate 21, and a one-way valve 225 is fixedly mounted through the side wall of the sealing cover 22, and an annular step 226 is arranged on one end of the one-way valve 225 extending into the sealing cover 22, and a limiting ring 224 is bearing-mounted on the annular step 226, and the limiting ring 224 can rotate along the center of the one-way valve 225, and a fan blade 223 is fixedly mounted on the limiting ring 224, and the fan blade 223 rotates synchronously with the rotation of the limiting ring 224; A connecting shaft 222 is slidably mounted at the center of the fan blade 223, and two groups of guide bars 227 are symmetrically fixedly mounted on the connecting shaft 222. At the same time, a buckle groove (not shown in the figure) adapted to the two groups of guide bars 227 is opened at the center of the fan blade 223. The connecting shaft 222 is suitable for rotating, so as to drive the fan blade 223 to rotate through the two groups of guide bars 227, so as to extract the air in the sealing cover 22; A first gear 29 is fixedly mounted on one end of the connecting shaft 222, and a first guide rod 210 is fixedly mounted on the inner wall of the sealing cover 22, and a placement groove 212 is provided on the first guide rod 210, and a first guide rail 213 is fixedly mounted on the placement groove 212, a first rack 211 is slidably mounted on the first guide rail 213, and a guide groove (not shown in the figure) adapted to the first guide rail 213 is provided on the bottom surface of the first rack 211, and the first rack 211 is suitable for sliding along the linear direction of the first guide rail 213 to be suitable for meshing with the first gear 29; It should be noted that the first rack 211 is composed of a first smooth section located on the left, a first meshing tooth section located in the middle, and a second smooth section located on the right. In the initial state, the first gear 29 is located at the position of the second smooth section on the first rack 211, and the first gear 29 is close to the first meshing tooth. like Figure 8As shown, a first limiting rod 214 is fixedly installed on one end of the first rack 211 close to the furnace shell 11, the first limiting rod 214 penetrates the furnace shell 11 and extends into the furnace shell 11, and a first spring 215 is connected between the first rack 211 and the furnace shell 11, the first spring 215 is sleeved on the first limiting rod 214, and the first spring 215 is suitable for initially limiting the position of the first rack 211 on the first guide rail 213, and a connecting plate 220 is fixedly installed on the side of the first rack 211, and a protrusion 221 is fixedly installed on the bottom surface of the connecting plate 220, and the protrusion 221 is suitable for contacting the metal rod discharged from the discharge end of the furnace shell 11; When the heated metal rod is transported to the discharge end of the furnace shell 11 by the conveyor 1, the metal rod contacts the protrusion 221 and synchronously pushes the connecting plate 220 to move, and the connecting plate 220 drives the first rack 211 to slide in the direction away from the furnace shell 11. At this time, the first spring 215 is stretched. As the first rack 211 continues to slide, the first meshing tooth on the first rack 211 gradually contacts the first gear 29 and drives the first gear 29 to rotate. At this time, the rotation of the first gear 29 synchronously drives the connecting shaft 222 to rotate. At this time, the connecting shaft 222 synchronously drives the fan blade 223 through the two sets of guide bars 227, that is, drives the limiting ring 224 to rotate. At this time, the rotation of the fan blade 223 can discharge the air in the sealing cover 22; During the discharge of the metal rod, the air in the sealing cover 22 is discharged in time through the exhaust mechanism 2, forming an environment relatively isolated from oxygen, which to a certain extent ensures that the metal rod is not oxidized during the discharge and transportation process, thereby maintaining the product quality; at the same time, the kinetic energy of the metal rod discharge is utilized, and a series of mechanical structures such as the protrusion 221, the connecting plate 220, the first rack 211, the first gear 29, etc. are linked to realize the automatic start of the exhaust mechanism 2. This ingenious design does not require an additional power source, simplifies the system complexity, and improves the energy utilization efficiency; In order to solve the problem that after the air in the sealing cover 22 is partially exhausted, the inert gas is added to the sealing cover 22 in time to ensure the continuity of production, such as Figure 5-Figure 8 As shown, a connecting shaft 28 is fixedly installed at one end of the connecting shaft 222, and a storage tank 23 is fixedly installed at one end of the connecting shaft 28, and a connecting pipe 24 is fixedly installed at the other end of the storage tank 23, and the connecting pipe 24 is suitable for connecting with an external inert gas supply device to feed the inert gas into the storage tank 23; A plurality of gas nozzles 25 are arranged and installed on the storage tank 23, the gas outlet end of the gas nozzle 25 is arranged toward the mounting plate 21, and the gas nozzle 25 is suitable for discharging the inert gas in the storage tank 23, and a sealing sleeve 26 is movably sleeved on the storage tank 23, the sealing sleeve 26 is suitable for sealing the gas nozzle 25, and a plurality of gas outlet pipes 27 are arranged and installed on the sealing sleeve 26, the number of the gas outlet pipes 27 is the same as the number of the gas nozzles 25, and in the initial state, the gas outlet pipes 27 are located on the sealing sleeve 26 away from the mounting plate 21, and the sealing sleeve 26 can seal the gas nozzle 25; like Figure 8-Figure 9 As shown, two groups of brackets 218 are symmetrically fixedly installed at one end of the sealing sleeve 26, and a fixing pipe 216 is connected between the two groups of brackets 218. One end of the fixing pipe 216 is arranged to penetrate the sealing cover 22, and a second gear 217 is sleeved on the fixing pipe 216. At the same time, a driving mechanism 3 is installed inside the sealing cover 22, and the driving mechanism 3 includes a second guide rod 31 fixedly installed in the sealing cover 22; A storage slot 32 is provided on the second guide rod 31, and a second guide rail 34 is fixedly installed on the storage slot 32, and a second rack 33 is slidably installed on the second guide rail 34, and the second rack 33 is suitable for sliding along the straight direction of the second guide rail 34; It should be noted that the distance between the second rack 33 and the furnace shell 11 is smaller than the distance between the first rack 211 and the furnace shell 11, and the second rack 33 is composed of a first smooth portion located on the left, a second meshing tooth located in the middle, and a second smooth portion located on the right. In the initial state, the second gear 217 is located at the second smooth portion of the second rack 33. A second limiting rod 35 is fixedly installed on one end of the second rack 33 close to the furnace shell 11, and the second limiting rod 35 penetrates the furnace shell 11 and extends into the furnace shell 11, and a second spring 36 is connected between the furnace shell 11 and the second limiting rod 35, and the second spring 36 is sleeved on the second limiting rod 35, and the second spring 36 is suitable for limiting the initial position of the second rack 33 on the second guide rail 34, and the other end of the connecting plate 220 is fixedly connected to the side of the second rack 33; When the heated metal rod is conveyed to the discharge end of the furnace shell 11 by the conveyor 1, the metal rod contacts the protrusion 221 and simultaneously pushes the connecting plate 220 to move, and the connecting plate 220 drives the first rack 211 and the second rack 33 to slide synchronously in the direction away from the furnace shell 11. At this time, the first spring 215 and the second spring 36 are both stretched, and as the first rack 211 and the second rack 33 continue to slide, and because the horizontal distance between the second rack 33 and the second gear 217 is greater than the horizontal distance between the first rack 211 and the first gear 29; Therefore, the first meshing tooth on the first rack 211 first contacts the first gear 29 and drives the first gear 29 to rotate. At this time, the rotation of the first gear 29 synchronously drives the connecting shaft 222 to rotate. At this time, the connecting shaft 222 synchronously drives the fan blade 223 through the two sets of guide bars 227, that is, drives the limiting ring 224 to rotate. At this time, the rotation of the fan blade 223 can discharge the air in the sealing cover 22. When the first rack 211 completely passes over the first gear 29, the second rack 33 gradually contacts and meshes with the second gear 217, and drives the fixed tube 216 to rotate, the fixed tube 216 drives the bracket 218 to rotate, and the bracket 218 drives the sealing sleeve 26 to rotate. When the second rack 33 completely passes over the second gear 217, the sealing sleeve 26 completes a 180-degree rotation, and the multiple groups of gas outlet pipes 27 on the sealing sleeve 26 correspond to the gas nozzle 25. At this time, the inert gas is discharged through the gas nozzle 25 and the gas outlet pipe 27 in sequence and filled into the sealing cover 22; Through the clever mechanical structure design, the connecting plate 220 is pushed when the metal rod is discharged, driving the first rack 211 and the second rack 33 to move in sequence. First, the air is exhausted, and after part of the air is exhausted, the release of the inert gas is automatically triggered. The whole process does not require additional human intervention, which greatly improves the degree of automation of the operation, reduces possible errors in the manual operation link, and ensures the continuity of production; based on the different horizontal distances between the first rack 211 and the first gear 29, the second rack 33 and the second gear 217, and the special segmented design of the rack, the sequence and timing of exhaust and inflation are accurately controlled. It is ensured that the inert gas is filled in only after the air in the sealing cover 22 is fully exhausted, which not only avoids the protection effect caused by the air not being exhausted due to premature inflation, but also prevents the metal rod from being exposed to the oxidizing environment due to late inflation, ensuring that the metal rod is always in an ideal protective atmosphere; The multiple groups of gas nozzles 25 and the corresponding gas outlet pipes 27 on the storage tank 23 can make the inert gas evenly distributed in the sealing cover 22. When the sealing sleeve 26 rotates to connect the two, the inert gas quickly and completely fills the sealing cover 22, effectively isolating oxygen, protecting the metal rod in all directions, further ensuring production quality, and reducing the defective rate caused by oxidation; the various components of the whole set of equipment are closely matched, such as the connection between the sealing sleeve 26 and the storage tank 23, the bracket 218 and the fixed pipe 216, etc., to achieve the dual functions of exhausting and inflating in a limited space. At the same time, the restriction of the initial position of the rack by the second spring 36 and the first spring 215 ensures that the device can be accurately reset every time the metal rod is discharged, ensuring long-term stable operation.

[0022] In order to facilitate the uniform feeding of the heated metal rods, Figure 1 and Fig.11As shown, a material discharge port 229 is provided on the mounting plate 21, and the material discharge port 229 is suitable for discharging heated metal rods. A material discharge mechanism 5 is installed on the bottom surface of the mounting plate 21, and the material discharge mechanism 5 includes a material discharge box 51 fixedly installed on the bottom surface of the mounting plate 21, and a first material discharge plate 52 is fixedly installed on one end of the inner wall of the material discharge box 51, and the first material discharge plate 52 is inclined. The first material discharge plate 52 is suitable for guiding the discharge of metal rods, and there is a certain distance between one end of the first material discharge plate 52 and the inner wall of the material discharge box 51; A second material removal plate 53 is fixedly installed on the inner wall of the material removal box 51 and is located directly below the first material removal plate 52. The second material removal plate 53 is tilted, and a guide plate 54 is fixedly installed at the tilted bottom end of the second material removal plate 53. There is a certain distance between the guide plate 54 and the inner wall of the material removal box 51, so that the metal rod rolls on the tilted mounting plate 21 and passes through the material removal port 229 to fall on the first material removal plate 52, and then passes through the first material removal plate 52 to fall on the second material removal plate 53; At the same time, two groups of feeding wheels 55 are mounted on the bearings of the unloading box 51, and there is a certain distance between the two groups of feeding wheels 55, and a rotating shaft 56 is connected between the two groups of feeding wheels 55, and a motor (not shown in the figure) is mounted on the rotating shaft 56 through a coupling, and the rotating shaft 56 is suitable for rotating with the output end of the motor to drive the two groups of feeding wheels 55 to rotate synchronously. At the same time, a discharge port (not marked in the figure) is opened on the outer side of the unloading box 51, and the discharge port is suitable for unloading the metal rods conveyed by the two groups of feeding wheels 55; A plurality of material storage grooves 57 are provided on the circumference of the feeding wheel 55. The material storage grooves 57 are semicircular grooves, so that after the metal rod passes through the first unloading plate 52 and falls on the second unloading plate 53, it falls on a group of material storage grooves 57 through the guide plate 54, and the two groups of feeding wheels 55 are driven by the motor to rotate at a uniform speed to realize uniform unloading of the metal rods. Through multi-layer guidance, the metal rods can be less likely to collide with other parts during the falling process, which helps to protect the surface quality of the metal rods, which is particularly important for some metal processing processes that require high surface quality. The motor drives the rotating shaft 56 and the two sets of feeding wheels 55 to rotate synchronously at a uniform speed. Since there are multiple sets of semicircular storage grooves 57 on the circumference of the feeding wheel 55, after the metal rods fall on the storage grooves 57, they are sent out one by one through the discharge port as the feeding wheel 55 rotates. This allows the metal rods to be transported out at a uniform speed, achieving uniform material discharge and meeting the demand for a stable supply of metal rods in subsequent production links.

[0023] And by adjusting the speed of the motor, the rotation speed of the feeding wheel 55 can be flexibly controlled, thereby realizing the adjustment of the metal rod unloading speed. This adjustability enables the unloading mechanism 5 to adapt to different production process requirements and production rhythms, improving the flexibility and adaptability of production. The entire unloading mechanism 5 is installed on the bottom surface of the mounting plate 21, closely matched with the unloading port 229, with a compact structure and small space occupation; In order to avoid the problem that when a batch of heated metal rods are discharged through the discharge port 229, the protrusion 221 is no longer pushed by the metal rods, the first rack 211 and the second rack 33 are reset by the first spring 215 and the second spring 36 respectively, so that the first rack 211 is in contact and meshed with the first gear 29 again, causing the fan blade 223 to rotate in the opposite direction, so that the external air enters the sealing cover 22 again, causing the inert gas content in the sealing cover 22 to decrease. Figure 6 and Figure 8 As shown, a distance mechanism 4 is installed on the side of the first rack 211, and the distance mechanism 4 includes a first push plate 41 fixedly installed on the side of the first rack 211, and a third rack 42 is slidably installed on the side of the inner wall of the sealing cover 22; It should be noted that a track may be installed inside the sealing cover 22, and a slide seat may be fixedly installed on the third rack 42, and the third rack 42 may be moved along the linear direction of the track through the slide seat; A first opening slot 43 is provided on the left side of the third rack 42, the first push plate 41 is in the first opening slot 43 and close to the opening position of the first opening slot 43, and two groups of connecting frames 46 are fixedly installed on the connecting shaft 222, and a fixed sleeve 47 is connected to one end of the two groups of connecting frames 46, and a rotating sleeve 48 is bearing-mounted on the fixed sleeve 47, and a screw rod 49 is fixedly installed on the rotating sleeve 48, the screw rod 49 runs through the sealing cover 22, and a third gear 410 is transmission-connected to the screw rod 49, and the side of the third gear 410 is bearing-connected to the inner wall of the sealing cover 22; A sliding rod 412 is fixedly installed on the inner wall of the sealing cover 22, and a sliding block 413 is slidably installed on the sliding rod 412. At the same time, a sleeve rod 411 is bearing-connected on the connecting shaft 222, and one end of the sleeve rod 411 is connected to the sliding block 413. A second push plate 45 is also fixedly installed on the side of the first rack 211. At the same time, a second opening groove 44 is opened at the other end of the first rack 211. The length of the second opening groove 44 is smaller than the length of the first opening groove 43, and in the initial state, the second push plate 45 is fitted to one end of the inner wall of the second opening groove 44. A Y-shaped tube 228 is fixedly installed at one end of the one-way valve 225. The Y-shaped tube 228 penetrates the sealing cover 22 and is arranged so as not to affect the rotation of the third gear 410. Therefore, when the protrusion 221 is pushed by the metal plate and moves in the direction away from the furnace shell 11, the first meshing tooth on the first rack 211 first contacts and meshes with the first gear 29, and then the second meshing tooth on the second rack 33 contacts and meshes with the second gear 217, so as to first discharge the air in the sealing cover 22, and then fill the sealing cover 22 with inert gas to prevent oxidation of the metal rod surface. Then, with the movement of the first rack 211 and the second rack 33, the first push plate 41 synchronously slides in the first opening groove 43 and gradually approaches one end of the inner wall of the first opening groove 43. At this time, the first push plate 41 pushes the third rack 42 to move synchronously, so that the third rack 42 gradually contacts and meshes with the third gear 410, and at the same time, the second push plate 45 gradually moves away from one end of the inner wall of the second opening groove 44. Then, the screw rod 49 rotates in the third gear 410 and gradually extends out of the third gear 410. The screw rod 49 drives the connecting shaft 222 to move through the two sets of connecting frames 46. The connecting shaft 222 drives the sleeve rod 411 and the first gear 29 to move. The sleeve rod 411 drives the sliding block 413 to move along the linear direction of the sliding rod 412 to restrict the linear movement of the screw rod 49. At the same time, the first gear 29 is horizontally away from the first rack 211. When a batch of heated metal rods are discharged through the discharge port 229, the protrusion 221 is no longer pushed by the metal rods and is reset under the action of the first spring 215 and the second spring 36. At this time, the first rack 211 and the second rack 33 are reset synchronously. At this time, the second meshing teeth on the second rack 33 first contact and mesh with the second gear 217 to make the sealing sleeve 26 rotate in the opposite direction. When the second meshing teeth on the second rack 33 completely pass over the second gear 217, the sealing sleeve 26 rotates in the opposite direction by 180 degrees. As the first rack 211 and the second rack 33 continue to reset, and because the first gear 29 is now set away from the first rack 211, the first meshing tooth on the first rack 211 is no longer in contact with the first rack 211, and when the first rack 211 passes over the position of the first gear 29, the second push plate 45 gradually approaches one end of the inner wall of the second opening groove 44, and synchronously pushes the third rack 42 to move, and the third meshing tooth on the third rack 42 gradually contacts and meshes with the third gear 410, so that the screw rod 49 is reset to the initial state again, that is, the first gear 29 is driven back to the initial position (on the same vertical line as the first rack 211); The entire process realizes automatic triggering of vacuuming and inflation, as well as automatic unloading, through the push of the metal rod, without the need for additional human intervention, which greatly improves the degree of automation of the operation, reduces possible errors in the manual operation link, and ensures the continuity of production. The first spring 215 and the second spring 36 limit the initial position of the first rack 211 and the second rack 33, ensuring that the device can be accurately reset each time the metal rod is discharged, ensuring the long-term stable operation of the equipment, and improving the repeatability and stability of the production process.

[0024] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A heating furnace feeding device, characterized in that: include: A conveyor (1), on which a furnace shell (11) is mounted, wherein the conveyor (1) has an auxiliary plate; An air extraction mechanism (2), the air extraction mechanism (2) being mounted on the auxiliary plate, the air extraction mechanism (2) comprising: a mounting plate (21), the mounting plate (21) being mounted on the auxiliary plate, the mounting plate (21) being arranged in an inclined manner, a sealing cover (22) being mounted on the mounting plate (21), a one-way valve (225) being installed through a side wall of the sealing cover (22), an annular step (226) being arranged at one end of the one-way valve (225) extending into the sealing cover (22), a limiting ring (224) being installed on a bearing on the annular step (226), and a fan blade (223) being installed on the limiting ring (224); A connecting shaft (222) is slidably mounted at the center of the fan blade (223), two groups of guide bars (227) are symmetrically mounted on the connecting shaft (222), a first gear (29) is mounted on one end of the connecting shaft (222), a first guide rod (210) is mounted on the inner wall of the sealing cover (22), a placement groove (212) is formed on the first guide rod (210), a first guide rail (213) is fixedly mounted on the placement groove (212), and a first rack (211) is slidably mounted on the first guide rail (213); A connecting plate (220) is installed on the side surface of the first rack (211), and a protrusion (221) is installed on the bottom surface of the connecting plate (220); A connecting shaft (28) is mounted on one end of the connecting shaft (222), a storage tank (23) is mounted on one end of the connecting shaft (28), a connecting pipe (24) is mounted on the other end of the storage tank (23), a plurality of groups of gas nozzles (25) are arranged and mounted on the storage tank (23), a sealing sleeve (26) is movably sleeved on the storage tank (23), a plurality of groups of gas outlet pipes (27) are arranged and mounted on the sealing sleeve (26), and the number of the gas outlet pipes (27) is the same as the number of the gas nozzles (25); Two groups of brackets (218) are symmetrically mounted on one end of the sealing sleeve (26); a fixing tube (216) is connected between the two groups of brackets (218); one end of the fixing tube (216) passes through the sealing cover (22); and a second gear (217) is sleeved on the fixing tube (216); A driving mechanism (3) is installed inside the sealing cover (22), and comprises: a second guide rod (31), the second guide rod (31) is installed inside the sealing cover (22), a storage groove (32) is provided on the second guide rod (31), a second guide rail (34) is fixedly installed on the storage groove (32), and a second rack (33) is slidably installed on the second guide rail (34).

2. A heating furnace feeding device according to claim 1, characterized in that: The first rack (211) is composed of a first smooth section located on the left, a first meshing tooth section located in the middle, and a second smooth section located on the right. In an initial state, the first gear (29) is located at the position of the second smooth section on the first rack (211), and the first gear (29) is close to the first meshing tooth section.

3. A heating furnace feeding device according to claim 2, characterized in that: A first limiting rod (214) is installed on one end of the first rack (211) close to the furnace shell (11); the first limiting rod (214) passes through the furnace shell (11) and extends into the furnace shell (11); a first spring (215) is connected between the first rack (211) and the furnace shell (11); the first spring (215) is sleeved on the first limiting rod (214).

4. A heating furnace feeding device according to claim 3, characterized in that: The distance between the second rack (33) and the furnace shell (11) is smaller than the distance between the first rack (211) and the furnace shell (11); the second rack (33) is composed of a first smooth portion located on the left, a second meshing tooth portion located in the middle, and a second smooth portion located on the right; in an initial state, the second gear (217) is located at the position of the second smooth portion on the second rack (33).

5. A heating furnace feeding device according to claim 4, characterized in that: A second limiting rod (35) is fixedly mounted on one end of the second rack (33) close to the furnace shell (11); the second limiting rod (35) passes through the furnace shell (11) and extends into the furnace shell (11); a second spring (36) is connected between the furnace shell (11) and the second limiting rod (35); the second spring (36) is sleeved on the second limiting rod (35); and the other end of the connecting plate (220) is fixedly connected to the side surface of the second rack (33).

6. A heating furnace feeding device according to claim 5, characterized in that: The mounting plate (21) is provided with a material discharge port (229), and a material discharge mechanism (5) is installed on the bottom surface of the mounting plate (21). The material discharge mechanism (5) comprises a material discharge box (51) fixedly installed on the bottom surface of the mounting plate (21), and a first material discharge plate (52) is fixedly installed on one end of the inner wall of the material discharge box (51). The first material discharge plate (52) is arranged obliquely, and a certain distance is formed between one end of the first material discharge plate (52) and the inner wall of the material discharge box (51).

7. A heating furnace feeding device according to claim 6, characterized in that: A second material removal plate (53) is installed on the inner wall of the material removal box (51) directly below the first material removal plate (52). The second material removal plate (53) is arranged obliquely. A guide plate (54) is installed at the inclined bottom end of the second material removal plate (53). There is a certain distance between the guide plate (54) and the inner wall of the material removal box (51).

8. A heating furnace feeding device according to claim 7, characterized in that: The unloading box (51) is provided with two groups of feed wheels (55) on the bearings, with a certain distance between the two groups of feed wheels (55), a rotating shaft (56) is connected between the two groups of feed wheels (55), and a motor is installed on the rotating shaft (56) via a coupling, a discharge port is provided on the outer side of the unloading box (51), and a plurality of groups of material storage grooves (57) are provided on the circumference of the feed wheels (55), and the material storage grooves (57) are semicircular grooves.

9. A heating furnace feeding device according to claim 8, characterized in that: A distancing mechanism (4) is installed on the side of the first rack (211), and the distancing mechanism (4) comprises a first push plate (41) installed on the side of the first rack (211); a third rack (42) is slidably installed on the side of the inner wall of the sealing cover (22); a first opening groove (43) is provided on the left side of the third rack (42); the first push plate (41) is located in the first opening groove (43) and close to the opening position of the first opening groove (43); two groups of connecting frames (46) are installed on the connecting shaft (222); one end of the two groups of connecting frames (46) is connected to a fixed sleeve (47); a rotating sleeve (48) is installed on the bearing of the fixed sleeve (47); a screw rod (49) is fixedly installed on the rotating sleeve (48); the screw rod (49) runs through the sealing cover (22); a third gear (410) is transmission-connected to the screw rod (49); and the side of the third gear (410) is connected to the inner wall bearing of the sealing cover (22).

10. A heating furnace feeding device according to claim 9, characterized in that: A sliding rod (412) is installed on the inner wall of the sealing cover (22), a sliding block (413) is slidably installed on the sliding rod (412), a sleeve rod (411) is connected to the bearing on the connecting shaft (222), one end of the sleeve rod (411) is connected to the sliding block (413), a second push plate (45) is fixedly installed on the side of the first rack (211), a second opening groove (44) is opened at the other end of the first rack (211), the length of the second opening groove (44) is smaller than the length of the first opening groove (43), in the initial state, the second push plate (45) is fitted on one end of the inner wall of the second opening groove (44), and a Y-shaped tube (228) is fixedly installed on one end of the one-way valve (225).

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