Energy-saving wheel hub heat treatment complete heating equipment

Abstract

The present application relates to the technical field of metal heat treatment, and particularly relates to an energy-saving wheel hub heat treatment complete heating device, which comprises a machine table, a processing box and a tubular heat exchanger are fixedly connected to the machine table, a heating cavity and a heat preservation cavity are arranged in the processing box, a wind collecting cover and two filter housings are fixedly connected to the top of the processing box, the two filter housings are connected through a first Y-shaped pipe and the wind collecting cover, the two filter housings are connected through a second Y-shaped pipe and an air inlet pipe, the air inlet pipe is fixedly connected to the tubular heat exchanger, and an exhaust assembly is arranged on the tubular heat exchanger. The present application utilizes the low-temperature warm air after heat exchange to preheat the cold blank, reduces the temperature difference between the blank and the high-temperature furnace, avoids the uneven thermal stress generated by directly putting the blank into the furnace, improves the consistency of the metallographic structure, reduces the defect rate of subsequent forging cracks, peeling and the like, and improves the forming performance of the blank.

Description

Technical Field

[0001] This invention relates to the field of metal heat treatment technology, and in particular to an energy-saving complete heating equipment for wheel hub heat treatment. Background Technology

[0002] With the rapid development of industries such as automobiles, construction machinery, and rail transportation, the market demand for steel and aluminum alloy wheels continues to rise. Long alloy round bars and long aluminum bars are the core raw materials for their production. Pre-forging heat treatment is a key pre-process in wheel production. It can effectively eliminate residual internal stress in the billet, optimize the metallographic structure, improve forming plasticity, reduce forging load and defect rate, and slow down die wear. It is crucial for ensuring product quality and controlling production costs.

[0003] Currently, many small and medium-sized wheel hub manufacturers in China generally adopt a multi-process production model, dividing the pre-heat treatment of long bars, hot forging, and wheel hub precision machining into independent workstations. For the pre-forging heat treatment of long bar blanks for wheel hubs, box-type resistance furnaces or single gas heating furnaces are often selected. These types of equipment have low purchase costs and simple structures, and can adapt to the production needs of small batches and multiple specifications. However, in long-term practical application, they have exposed many difficult-to-solve technical defects: traditional heating equipment does not have a preheating structure for cold blanks. Long bar blanks directly enter the high-temperature furnace. The temperature difference between the blank and the furnace environment is too large, which easily generates uneven thermal stress, resulting in poor metallographic consistency and significantly increasing subsequent forging defects. Summary of the Invention

[0004] The purpose of this invention is to address the following shortcomings in the prior art: traditional heating equipment does not have a preheating structure for cold billets, and long billets directly enter the high-temperature furnace. The temperature difference between the billet and the furnace environment is too large, which easily generates uneven thermal stress, resulting in poor metallographic consistency and significantly increasing subsequent forging defects. Therefore, this invention proposes an energy-saving complete heating equipment for wheel hub heat treatment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An energy-saving wheel hub heat treatment complete heating equipment includes a machine base, on which a processing box and a shell-and-tube heat exchanger are fixedly connected. The processing box is provided with a heating chamber and a heat preservation chamber. The top of the processing box is fixedly connected to an air collecting hood and two filter housings. The two filter housings are connected to the air collecting hood through a first Y-shaped tube. The two filter housings are connected to an air inlet pipe through a second Y-shaped tube. The air inlet pipe is fixedly connected to the shell-and-tube heat exchanger. The shell-and-tube heat exchanger is equipped with an exhaust assembly, which includes an air pump, a first branch pipe, and a second branch pipe. A conical preheating hood is fixedly connected to one side of the processing box. The conical preheating hood is fixedly connected to the first branch pipe, and the inner wall of the conical preheating hood has multiple air outlet holes. An input frame and an output frame are fixedly connected to the machine base. An input component is provided on the input frame, and an output component is provided on the output frame.

[0006] As a preferred embodiment, the input component includes a plurality of first motors fixedly mounted on the input frame, each first motor having a first rotating shaft fixedly connected to its drive end, and an input roller fixedly connected to the first rotating shaft.

[0007] As a preferred embodiment, the output assembly includes a plurality of second rotating shafts rotatably mounted on the output frame, each second rotating shaft having an output roller fixedly connected thereto. A plurality of second motors are fixedly mounted on the side of the output frame away from the processing box, and the drive end of each second motor is fixedly connected to the corresponding second rotating shaft.

[0008] As a preferred embodiment, a hollow outer shell is fixedly connected to the machine base. A T-shaped cavity is formed inside the hollow outer shell, and a sealing plate is slidably installed inside the T-shaped cavity. A bent rod is fixedly connected to the sealing plate. An air supply pipe and a cold air pipe are fixedly connected to the hollow outer shell. Two air ports are opened on the hollow outer shell. A first one-way valve is installed on each air port, the air supply pipe, and the cold air pipe. The suction pump is fixedly installed on the shell-and-tube heat exchanger. The first and second branch pipes are both fixedly connected to the suction pump. A cam is fixedly connected to one end of the first rotating shaft that passes through the input frame. A horizontal plate is fixedly connected to one end of the bent rod. A slider is slidably connected to the horizontal plate. The slider is connected to the cam through a rotating block.

[0009] As a preferred embodiment, one end of the cooling pipe is connected to the second split pipe via a transition pipe, and a hollow cover for connecting the second split pipe is fixedly connected to the output frame. The output frame has an air outlet channel arranged in a serpentine shape, wherein a cavity for connecting the air outlet channel is opened in each of the plurality of output rollers.

[0010] As a preferred embodiment, each of the filter housings is fixedly installed with a perforated metal plate and multiple high-temperature resistant metal wire meshes. The bottom of each filter housing is connected to an inspection door by bolts. Each of the filter housings has a circular hole on one side that communicates with the first Y-shaped tube. Two second one-way valves are provided on the second Y-shaped tube.

[0011] As a preferred embodiment, a crossbar is slidably connected to the two filter housings, and a sealing block is fixedly connected to both ends of the crossbar. The two sealing blocks are respectively attached to the inner walls of the two filter housings.

[0012] As a preferred embodiment, a fixing block is fixedly connected to the processing box, and a sealing cavity with a T-shaped cross-section is formed on the fixing block. An air inlet hole communicating with the air supply pipe is formed on one inner wall of the sealing cavity. A convex block is slidably connected inside the sealing cavity, and a slide rod is fixedly connected to one side of the convex block. An I-shaped block is connected to the slide rod by a pull rope. A bending block is fixedly connected to one of the filter housings, and a U-shaped hole for connecting the pull rope is formed on the bending block. A sliding groove with a T-shaped cross-section is formed on the cross rod. The I-shaped block and the sliding groove are slidably connected. A spring is fixedly connected to one side of the I-shaped block, and the spring is fixedly connected to the filter housing.

[0013] As a preferred embodiment, a T-shaped block and a moving rod are slidably connected within the sealed cavity. One side surface of the T-shaped block is set as an arc surface. A pressing rod is fixedly connected to one side of the sliding rod. The surface of the pressing rod and the surface of the moving rod are in contact. A conical vent hole is opened on one side inner wall of the sealed cavity. A sealing plug for blocking the conical vent hole is fixedly connected to the moving rod. A sliding strip is slidably connected to one side of the fixed block. The sliding strip is connected to the T-shaped block and the moving rod through a first hinge rod and a second hinge rod, respectively.

[0014] As a preferred embodiment, a heat-insulating partition is fixedly connected inside the processing box, and a sealing brush is fixedly connected to the heat-insulating partition. Both the processing box and the heat-insulating partition are provided with perforations for steel to pass through.

[0015] Compared with the prior art, the beneficial effects of the present invention are: It can effectively solve the problem of excessive temperature difference of billet and improve the quality of heat treatment. This equipment is equipped with a conical preheating hood, which uses medium and low temperature hot air after heat exchange to preheat the cold billet, reduce the temperature difference between the billet and the high temperature furnace, avoid the uneven thermal stress generated by the billet directly entering the furnace, improve the consistency of metallographic structure, reduce the defect rate of subsequent forging cracks, peeling and other defects, and improve the billet forming performance. High-efficiency waste heat recovery significantly reduces energy consumption. The waste heat of high-temperature hot air in the furnace is recovered through the air hood and shell-and-tube heat exchanger. The warm air after heat exchange is used for preheating of billets and gradual cooling of discharge, realizing the cascade utilization of waste heat and greatly reducing the overall energy consumption of the equipment. Dual filtration with automatic switching ensures stable system operation. Equipped with dual filter housings, the system can operate intermittently with single-channel filtration and single-channel backup via an automatic switching mechanism. Filter channels can be switched online, and filter components can be cleaned and maintained without stopping the machine. This effectively avoids system failures caused by filter blockage and improves the stability of continuous equipment operation. At the same time, the composite filter structure of perforated metal plates and high-temperature resistant metal wire mesh can efficiently remove dust and oil mist from hot air, protecting heat exchangers and pipelines and extending the service life of the equipment. Uniform gradient cooling optimizes the microstructure and properties of the billet. Through the serpentine air outlet channel and the cavity of the output roller, uniform gradient cooling of the output billet can be achieved, avoiding internal stress and microstructural defects caused by sudden cooling of the billet, further improving the plasticity and forming properties of the billet, and reducing the wear of forging dies. Suitable for the multi-process production mode of small and medium-sized enterprises, the equipment adopts a roller bottom continuous conveying structure, which can realize continuous heat treatment of long blanks. It has a compact structure and is easy to operate and maintain. It is suitable for the small-batch, multi-specification production needs of small and medium-sized wheel hub enterprises, while reducing the intensity of manual labor and improving production efficiency. Attached Figure Description

[0016] Figure 1 This is a front structural schematic diagram of an energy-saving wheel hub heat treatment complete heating equipment proposed in this invention; Figure 2 This is a right-side structural schematic diagram of an energy-saving wheel hub heat treatment complete heating equipment proposed in this invention; Figure 3 This is a schematic diagram of the left side of an energy-saving wheel hub heat treatment complete heating equipment proposed in this invention; Figure 4 This is a schematic diagram of the rear structure of an energy-saving wheel hub heat treatment complete heating equipment proposed in this invention; Figure 5 This is a partial internal structure diagram of the back of an energy-saving wheel hub heat treatment heating device proposed in this invention. Figure 6 This is a partial front view of the internal structure of an energy-saving wheel hub heat treatment heating device proposed in this invention. Figure 7 This is a top view of a partial internal structure of the two filter housings, the fixing block, and the sealing block in this invention; Figure 8 This is a top view of a partial internal structure of the fixing block, cross rod, and sliding rod in this invention; Figure 9 This is a partial internal structural diagram of the side of the first Y-shaped tube, the fixing block, and the high-temperature resistant metal wire mesh in this invention. Figure 10 This is a top view of a partial internal structure of the first Y-shaped tube, the fixing block, and the high-temperature resistant metal wire mesh in this invention; Figure 11 This is a partial internal structural diagram of the cam, cross plate, and rotating block on the side of the present invention. Figure 12 This is a top view of a partial internal structure of the fixing block, sealing cavity, and pull rope in this invention; Figure 13 This is a partial internal structural diagram of the cross bar, I-shaped block, and pull rope in this invention; Figure 14 This is a top view of a partial internal structure of the output frame, hollow cover, and output roller in this invention; Figure 15 for Figure 6 A magnified schematic diagram of the structure of part A in the diagram; Figure 16 for Figure 10 A magnified schematic diagram of the partial structure of B in the diagram.

[0017] In the diagram: 1. Machine base; 2. Input frame; 3. Output frame; 4. Shell and tube heat exchanger; 5. Hollow outer shell; 6. Cam; 7. Horizontal plate; 8. Filter shell; 9. Air collector hood; 10. Processing box; 11. Conical preheating hood; 12. Bending rod; 13. First branch pipe; 14. Cold air pipe; 15. First Y-shaped pipe; 16. Slide groove; 17. Second branch pipe; 18. Hollow hood; 19. Air pump; 20. Inlet pipe; 21. Transition pipe; 22. Second Y-shaped pipe; 23. Heat insulation baffle; 24. Sealing block; 25. Cross rod; 26. 27 Slide rod, 28 Round hole, 29 Bolt, 30 Inspection door, 31 Second hinge rod, 32 Fixing block, 33 T-shaped block, 34 Slide bar, 35 First hinge rod, 36 Convex block, 37 High temperature resistant metal wire mesh, 38 Sealing cavity, 39 Output roller, 40 Air outlet channel, 41 Air supply pipe, 42 Sealing plate, 43 Conical exhaust hole, 44 Moving rod, 45 Pressing rod, 46 Rotating block, 47 Slider, 48 Pull rope, 49 I-shaped block, 50 Spring, 51 Sealing plug. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Reference Figures 1-16An energy-saving wheel hub heat treatment complete heating equipment includes a machine base 1. A processing box 10 and a shell-and-tube heat exchanger 4 are fixedly connected to the machine base 1. The shell-and-tube heat exchanger 4 is existing technology, and its working principle is not described in detail. The processing box 10 is provided with a heating chamber and a heat preservation chamber. The processing box 10 is heated by resistance heating. An air collecting hood 9 and two filter housings 8 are fixedly connected to the top of the processing box 10. The two filter housings 8 are connected to the air collecting hood 9 through a first Y-shaped pipe 15. The high-temperature hot air in the heating chamber of the processing box 10 can be collected by the air collecting hood 9 and enter the first Y-shaped pipe 15, and then diverted into the two filter housings 8. The two filter housings 8 are connected to an air inlet pipe 20 through a second Y-shaped pipe 22. The air inlet pipe 20 is fixedly connected to the shell-and-tube heat exchanger 4. The shell-and-tube heat exchanger 4 is used to perform heat exchange treatment on the filtered high-temperature hot air, converting it into medium-low temperature hot air of 120-220℃.

[0020] refer to Figure 1 , Figure 2 and Figure 3 The shell-and-tube heat exchanger 4 is equipped with an exhaust assembly, which includes an air pump 19, a first branch pipe 13, and a second branch pipe 17. The air pump 19 is installed at the hot air outlet end of the shell-and-tube heat exchanger 4 and can extract the warm air after heat exchange and distribute it through the first branch pipe 13 and the second branch pipe 17. A conical preheating hood 11 is fixedly connected to one side of the processing box 10. The conical preheating hood 11 and the first branch pipe 13 are fixedly connected. Multiple air outlet holes are opened on the inner wall of the conical preheating hood 11.

[0021] refer to Figure 3 , Figure 4 The machine base 1 is fixedly connected to an input frame 2 and an output frame 3. The input frame 2 is equipped with an input component, and the output frame 3 is equipped with an output component. The input frame 2 and the output frame 3 are fixedly connected to the machine base 1 in sequence along the billet conveying direction, and are used for feeding and unloading long billets, respectively. The input component includes multiple first motors fixedly installed on the input frame 2. The drive end of each first motor is fixedly connected to a first rotating shaft 28. An input roller is fixedly connected to the first rotating shaft 28. The input roller can drive the long billet to be conveyed into the processing box 10 at a uniform speed. The output component includes multiple second rotating shafts rotatably installed on the output frame 3. An output roller 39 is fixedly connected to each second rotating shaft. Multiple second motors are fixedly installed on the side of the output frame 3 away from the processing box 10. The drive end of each second motor is fixedly connected to the corresponding second rotating shaft. The multiple second motors drive the output roller 39 to rotate, realizing the unloading and conveying of the billet.

[0022] refer to Figure 6 , Figure 11 and Figure 15A hollow shell 5 is fixedly connected to the machine base 1. A T-shaped cavity is opened inside the hollow shell 5. A sealing plate 42 is slidably installed in the T-shaped cavity. A bent rod 12 is fixedly connected to the sealing plate 42. A gas supply pipe 41 and a cold air pipe 14 are fixedly connected to the hollow shell 5. Two air ports are opened on the hollow shell 5. A first one-way valve is installed on each air port, gas supply pipe 41 and cold air pipe 14. A vacuum pump 19 is fixedly installed on the shell-and-tube heat exchanger 4. The first branch pipe 13 and the second branch pipe 17 are fixedly connected to the vacuum pump 19. A cam 6 is fixedly connected to one end of a first rotating shaft 28 that passes through the input frame 2. A horizontal plate 7 is fixedly connected to one end of the bent rod 12. A slider 47 is slidably connected to the horizontal plate 7. The slider 47 is connected to the cam 6 through a rotating block 46.

[0023] refer to Figure 14 One end of the cold air pipe 14 is connected to the transition pipe 21 and the second diversion pipe 17. A hollow cover 18 for connecting the second diversion pipe 17 is fixedly connected to the output frame 3. An air outlet channel 40 arranged in a serpentine shape is opened on the output frame 3. A cavity for connecting the air outlet channel 40 is opened in each of the multiple output rollers 39.

[0024] refer to Figure 4 and Figure 7 Each filter housing 8 has a metal perforated plate and multiple high-temperature resistant metal wire meshes 37 fixedly installed inside. The bottom of the filter housing 8 is connected to an inspection door 30 by bolts 29. The inspection door 30 is fastened to the filter housing 8 by bolts 29, and the connection is well sealed, which facilitates the cleaning of filtered dust, oil mist and impurities. Each filter housing 8 has a round hole 27 on one side that communicates with the first Y-shaped tube 15. Two second one-way valves are installed on the second Y-shaped tube 22. The two second one-way valves control the flow direction of the filtered clean hot air and prevent the clean hot air from flowing back.

[0025] refer to Figure 7 and Figure 8 Two filter housings 8 are slidably connected to a cross rod 25. Both ends of the cross rod 25 are fixedly connected to a sealing block 24. The two sealing blocks 24 are respectively attached to the inner walls of the two filter housings 8. The sealing blocks 24 can be attached to the round holes 27 of the filter housings 8 to realize the opening and closing of a single filter channel.

[0026] refer to Figure 9 , Figure 10 , Figure 13 and Figure 16A fixing block 32 is fixedly connected to the processing box 10. A sealing cavity 38 with a T-shaped cross-section is opened on the fixing block 32. An air inlet hole communicating with the air supply pipe 41 is opened on one side of the inner wall of the sealing cavity 38. A convex block 36 is slidably connected inside the sealing cavity 38. A slide rod 26 is fixedly connected to one side of the convex block 36. An I-shaped block 49 is connected to the slide rod 26 by a pull rope 48. A bending block is fixedly connected to one of the filter housings 8. A U-shaped hole for connecting the pull rope 48 is opened on the bending block. A groove 16 with a T-shaped cross-section is opened on the cross rod 25. The I-shaped block 49 and the groove 16 are slidably connected. A spring 50 is fixedly connected to one side of the I-shaped block 49. The spring 50 is fixedly connected to the filter housing 8. The pull rope 48 passes through the U-shaped hole and connects to the I-shaped block 49 on the cross rod 25. The I-shaped block 49 is slidably installed in the T-shaped groove 16 of the cross rod 25. A spring 50 is installed between the I-shaped block 49 and the filter housing 8.

[0027] refer to Figure 10 , Figure 12 and Figure 16 A T-shaped block 33 and a moving rod 44 are slidably connected inside the sealing cavity 38. The T-shaped block 33 and the inner wall of the sealing cavity 38 have good sealing performance when slidably connected. One side surface of the T-shaped block 33 is set as an arc surface. A pressing rod 45 is fixedly connected to one side of the sliding rod 26. The surface of the pressing rod 45 and the surface of the moving rod 44 are in contact. A conical exhaust hole 43 is opened on one side of the inner wall of the sealing cavity 38. A sealing plug 51 for blocking the conical exhaust hole 43 is fixedly connected to the moving rod 44. The sealing plug 51 can block the conical exhaust hole 43. A sliding strip 34 is slidably connected to one side of the fixed block 32. The sliding strip 34 is connected to the T-shaped block 33 and the moving rod 44 respectively through the first hinge rod 35 and the second hinge rod 31. The sliding strip 34 is hinged to the T-shaped block 33 through the first hinge rod 35 and the sliding strip 34 is hinged to the moving rod 44 through the second hinge rod 31.

[0028] refer to Figure 5 The processing box 10 is fixedly connected to a heat insulation partition 23, and a sealing brush is fixedly connected to the heat insulation partition 23. Both the processing box 10 and the heat insulation partition 23 are provided with perforations for steel to pass through. The processing box 10 is provided with a heating chamber and a heat insulation chamber, and a high-temperature resistant heat insulation partition 23 is fixedly installed between the two. A high-temperature resistant sealing brush is fixedly connected to the heat insulation partition 23. The processing box 10 and the heat insulation partition 23 are provided with perforations for long blanks to pass through, so as to realize temperature zone separation and inter-section sealing, reduce heat flow. All the above components have good high temperature resistance and corrosion resistance.

[0029] The processing box 10 is started, and the heating chamber and the heat preservation chamber reach the pre-forging heat treatment process temperature. The long root billet for wheel hubs is placed on the input roller of the input frame 2. The first motor drives the first rotating shaft 28 and the input roller to rotate, driving the billet to be conveyed into the processing box 10 at a uniform speed. The billet passes through the perforation and heat insulation plate 23 on one side of the processing box 10 in sequence, enters the heating chamber for rapid heating, and the heat preservation chamber maintains a constant temperature to complete the heating process of the pre-forging heat treatment. The heat insulation plate 23 and the sealing brush can reduce heat flow between sections and ensure independent and stable temperature zones. The high-temperature hot air in the processing box 10 rises and enters the first Y-shaped pipe 15 through the top air collecting hood 9, and is split into two filter shells 8. The hot air is filtered by the metal perforated plate and high-temperature resistant metal wire mesh 37 in the filter shell 8 to remove impurities such as iron oxide dust and oil aerosol. The clean hot air is sent into the shell-and-tube heat exchanger 4 through the second Y-shaped pipe 22 and the air inlet pipe 20.

[0030] Clean, high-temperature hot air enters the shell-and-tube heat exchanger 4, releasing heat and converting it into medium-low temperature hot air at 120-220℃. The air extraction pump 19 extracts the hot air and splits it into two paths through the first split pipe 13 and the second split pipe 17. One path of hot air is sent to the conical preheating hood 11 through the first split pipe 13, and the other path of hot air is sent to the hollow hood 18 through the second split pipe 17. The hot air sent into the conical preheating hood 11 is sprayed out through multiple air outlets on its inner wall and sprayed around the cold billet, preheating the cold billet that is about to enter the processing box 10 from multiple directions, reducing the temperature difference between the billet and the high-temperature furnace, avoiding uneven thermal stress caused by the billet entering the furnace directly, and improving the consistency of the metallographic structure.

[0031] After being treated in the insulation cavity, the billet is conveyed out by the output rollers 39 of the output frame 3. The warm air in the second diversion pipe 17 mixes with the cold air output from the T-shaped cavity inside the hollow shell 5 for cooling. The mixture then enters the serpentine air outlet channel 40 through the hollow cover 18 and is then introduced into the cavities of each output roller 39. Utilizing the good thermal conductivity of the output rollers 39, the billet is subjected to uniform gradient cooling to avoid sudden cooling cracking and further optimize the billet's microstructure and properties. When the first rotating shaft 28 of the input frame 2 rotates, it drives the cam 6. The cam 6 rotates synchronously, and the cam 6 drives the horizontal plate 7 to move up and down reciprocally through the rotating block 46 and the slider 47. This drives the bending rod 12 and the sealing plate 42 to move up and down reciprocally in the T-shaped cavity. When the sealing plate 42 moves upward, it pushes the gas in the T-shaped cavity into the sealing cavity 38 through the gas supply pipe 41. When the sealing plate 42 moves downward, it sends the cold air in the T-shaped cavity into the transition pipe 21 through the cold air pipe 14. The cold air mixes with the warm air in the second diversion pipe 17 to cool down the air and provide a low-temperature airflow for the hollow cover 18.

[0032] In the initial state, one of the sealing blocks 24 seals the circular hole 27 of one side of the filter housing 8, while the other side of the filter housing 8 is in operation. As gas continuously fills the sealing cavity 38, it pushes the convex block 36 to slide within the sealing cavity 38. The slide rod 26 drives the pull rope 48 to pull the I-shaped block 49. The I-shaped block 49 slides along the slide groove 16 and gradually moves against the inner wall of the slide groove 16, thereby driving the cross rod 25 to move, so that the two sealing blocks 24 move synchronously, switching the working state of the two filter housings 8, realizing automatic intermittent operation with single-path filtration and single-path standby. When the convex block 36 moves and presses the arc surface of the T-block 33, the T-block 33 moves. Under the synchronous transmission of the slide bar 34, the first hinge rod 35 and the second hinge rod 31, the moving rod 44 moves synchronously. The sealing plug 51 moves out from the conical exhaust hole 43, and the gas in the sealing cavity 38 is discharged. Under the elastic force of the spring 50, the I-block 49 and the convex block 36 are reset, and the sealing plug 51 re-blocks the conical exhaust hole 43, completing one switching cycle. This realizes the automatic intermittent operation of the filter housing 8, which can switch the filter channel without stopping the machine, making it convenient for online maintenance and cleaning.

[0033] In use, the processing box 10 is first heated. Then, the long steel is placed on multiple input rollers of the input frame 2. The first motor drives the input rollers to rotate, which can transport the long steel. The hot air inside the heating chamber of the processing box 10 is transported to the first Y-shaped tube 15 through the air collector 9, and then to the filter shell 8 through the first Y-shaped tube 15. The perforated metal plate and multiple high-temperature resistant metal wire meshes 37 filter out impurities and oil mist in the hot air. Then, the clean hot air is transported to the shell-and-tube heat exchanger 4 through the air inlet pipe 20 for heat exchange. The warm gas is output in two ways, from the first branch pipe 13 and the second branch pipe 17 respectively. The warm gas output from the first branch pipe 13 enters the conical preheating hood 11 and is sprayed from multiple air outlets to the sides of the long steel, preheating the part of the long steel that is about to enter the processing box 10 to avoid excessive temperature difference.

[0034] During the rotation of the input roller and the first rotating shaft 28, one of the first rotating shafts 28 will drive the cam 6 to rotate together. Since the two ends of the rotating block 46 are respectively rotatably connected to the cam 6 and the slider 47, and the slider 47 is slidably mounted on the horizontal plate 7 and cannot be disengaged from the horizontal plate 7, during the rotation of the cam 6, it will drive the sealing plate 42 to move up and down reciprocally in the T-shaped cavity. The sealing performance when the sealing plate 42 is connected to the inner wall of the T-shaped cavity is good. When the sealing plate 42 moves upward, the gas inside the T-shaped cavity can be passed through the gas delivery pipe 41 and the inlet... When the air is delivered to the sealed cavity 38, the cold gas inside the T-shaped cavity can be delivered to the transition pipe 21 through the cold gas pipe 14 when the sealing plate 42 moves downward. The transition pipe 21 and the second diversion pipe 17 are fixedly connected. The cold gas and the warm gas in the second diversion pipe 17 mix and will be further cooled. The low temperature air will enter the serpentine air outlet channel 40 and the cavity of each output roller 39 through the hollow cover 18. The output roller 39 has good thermal conductivity and can further reduce the temperature of the long steel coming out of the heat preservation cavity to avoid excessive temperature difference.

[0035] Initially, the arc-shaped surfaces of the extrusion rod 45 and the moving rod 44 are in contact, the sealing plug 51 seals the conical exhaust hole 43, and one of the sealing blocks 24 seals the round hole 27, while the other sealing block 24 and the round hole 27 are offset. As the gas entering the sealing cavity 38 increases, the sealing performance between the convex block 36 and the inner wall of the sealing cavity 38 is good, which in turn pushes the convex block 36 to slide within the sealing cavity 38. The sliding rod 26 and the fixed block 32 slide relative to each other, and their connection seal is good, without elasticity and resistant to... The two ends of the abrasion-resistant pull rope 48 are fixedly connected to the slide rod 26 and the I-shaped block 49, respectively. Under the transmission action of the pull rope 48, the I-shaped block 49 will slide in the slide groove 16. When the I-shaped block 49 gradually moves against the inner wall of one side of the slide groove 16, the cross rod 25 and the two filter housings 8 will slide relative to each other. The two sealing blocks 24 move synchronously, that is, one sealing block 24 is misaligned with the round hole 27 again, and the other sealing block 24 seals and blocks the round hole 27 again, so that the filtration work of the two filter housings 8 can be automatically switched.

[0036] After the convex block 36 moves to a certain position, it will gradually abut against the arc surface of the T-shaped block 33, and the T-shaped block 33 and the fixed block 32 will slide relative to each other. Since the two ends of the first hinge rod 35 are respectively hinged to the slide bar 34 and the T-shaped block 33, and the two ends of the second hinge rod 31 are respectively hinged to the slide bar 34 and the moving rod 44, when the T-shaped block 33 moves, under the synchronous transmission action of the first hinge rod 35, the slide bar 34 and the second hinge rod 31, the moving rod 44 and the sealing plug 51 move synchronously. The sealing plug 51 moves out from the conical exhaust hole 43, and the gas in the sealing cavity 38... The body can be discharged through the vent. Under the elastic force of the spring 50, the I-shaped block 49 and the convex block 36 are reset synchronously. After the extrusion rod 45 is reset and moved, it will extrude the arc surface of the moving rod 44 again, thereby causing the sealing plug 51 to re-block the conical exhaust hole 43. By repeating the above process, the two filter housings 8 can be automatically and intermittently operated. By observing the fit between the inner wall of the I-shaped block 49 and the slide 16, the filter housing 8 close to the inner wall of the I-shaped block 49 is in a non-working state. Then, by turning the bolt 29 and opening the inspection door 30, cleaning can be performed.

[0037] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An energy-saving wheel hub heat treatment complete heating equipment, comprising a machine base (1), characterized in that, The machine base (1) is fixedly connected to a processing box (10) and a shell-and-tube heat exchanger (4). The processing box (10) is provided with a heating chamber and a heat preservation chamber. The processing box (10) is fixedly connected to the top of the air collecting hood (9) and two filter housings (8). The two filter housings (8) are connected to the air collecting hood (9) through the first Y-shaped tube (15). The two filter housings (8) are connected to the air inlet pipe (20) through the second Y-shaped tube (22). The air inlet pipe (20) is fixedly connected to the shell-and-tube heat exchanger (4). The shell-and-tube heat exchanger (4) is provided with an exhaust assembly, which includes an air pump (19), a first branch pipe (13) and a second branch pipe (17). A conical preheating hood (11) is fixedly connected to one side of the processing box (10). The conical preheating hood (11) and the first branch pipe (13) are fixedly connected. The inner wall of the conical preheating hood (11) is provided with multiple air outlet holes. The machine base (1) is fixedly connected to an input frame (2) and an output frame (3). The input frame (2) is provided with an input component, and the output frame (3) is provided with an output component.

2. The energy-saving wheel hub heat treatment complete heating equipment according to claim 1, characterized in that, The input component includes multiple first motors fixedly mounted on the input frame (2), and each first motor has a first rotating shaft (28) fixedly connected to its drive end, and an input roller is fixedly connected to the first rotating shaft (28).

3. The energy-saving wheel hub heat treatment complete heating equipment according to claim 2, characterized in that, The output assembly includes multiple second rotating shafts rotatably mounted on the output frame (3), each of which is fixedly connected to an output roller (39). Multiple second motors are fixedly mounted on the side of the output frame (3) away from the processing box (10), and the drive end of each second motor is fixedly connected to the corresponding second rotating shaft.

4. The energy-saving wheel hub heat treatment complete heating equipment according to claim 3, characterized in that, A hollow shell (5) is fixedly connected to the machine base (1). A T-shaped cavity is opened inside the hollow shell (5). A sealing plate (42) is slidably installed inside the T-shaped cavity. A bent rod (12) is fixedly connected to the sealing plate (42). An air supply pipe (41) and a cold air pipe (14) are fixedly connected to the hollow shell (5). Two air ports are opened on the hollow shell (5). A first one-way valve is installed on each air port, the air supply pipe (41), and the cold air pipe (14). The pump (19) is fixedly installed on the shell-and-tube heat exchanger (4). The first branch pipe (13) and the second branch pipe (17) are both fixedly connected to the air pump (19). One of the first rotating shafts (28) passes through one end of the input frame (2) and is fixedly connected to a cam (6). One end of the bent rod (12) is fixedly connected to a horizontal plate (7). A slider (47) is slidably connected on the horizontal plate (7). The slider (47) is connected to the cam (6) through a rotating block (46).

5. The energy-saving wheel hub heat treatment complete heating equipment according to claim 4, characterized in that, One end of the cooling pipe (14) is connected to the second diversion pipe (17) through the transition pipe (21). A hollow cover (18) for connecting the second diversion pipe (17) is fixedly connected to the output frame (3). An air outlet channel (40) arranged in a serpentine pattern is opened on the output frame (3). A cavity for connecting the air outlet channel (40) is opened in each of the multiple output rollers (39).

6. The energy-saving wheel hub heat treatment complete heating equipment according to claim 1, characterized in that, Each of the filter housings (8) is fixedly installed with a metal perforated plate and multiple high-temperature resistant metal wire meshes (37). The bottom of the filter housing (8) is connected to an inspection door (30) by bolts (29). Each of the filter housings (8) has a round hole (27) on one side that communicates with the first Y-shaped tube (15). The second Y-shaped tube (22) is provided with two second one-way valves.

7. The energy-saving wheel hub heat treatment complete heating equipment according to claim 4, characterized in that, A cross rod (25) is slidably connected to the two filter housings (8). A sealing block (24) is fixedly connected to both ends of the cross rod (25). The two sealing blocks (24) are respectively attached to the inner walls of the two filter housings (8).

8. The energy-saving wheel hub heat treatment complete heating equipment according to claim 7, characterized in that, A fixing block (32) is fixedly connected to the processing box (10). A sealing cavity (38) with a T-shaped cross-section is opened on the fixing block (32). An air inlet hole communicating with the air supply pipe (41) is opened on one side of the inner wall of the sealing cavity (38). A convex block (36) is slidably connected inside the sealing cavity (38). A slide rod (26) is fixedly connected to one side of the convex block (36). An I-shaped block (49) is connected to the slide rod (26) by a pull rope (48). A bending block is fixedly connected to one of the filter housings (8). A U-shaped hole for connecting the pull rope (48) is opened on the bending block. A groove (16) with a convex cross-section is opened on the cross rod (25). The I-shaped block (49) and the groove (16) are slidably connected. A spring (50) is fixedly connected to one side of the I-shaped block (49). The spring (50) and the filter housing (8) are fixedly connected.

9. The energy-saving wheel hub heat treatment complete heating equipment according to claim 8, characterized in that, A T-shaped block (33) and a moving rod (44) are slidably connected inside the sealed cavity (38). One side surface of the T-shaped block (33) is set as an arc surface. A pressing rod (45) is fixedly connected to one side of the sliding rod (26). The surface of the pressing rod (45) and the surface of the moving rod (44) are in contact. A conical exhaust hole (43) is opened on one side of the inner wall of the sealed cavity (38). A sealing plug (51) for blocking the conical exhaust hole (43) is fixedly connected to the moving rod (44). A sliding strip (34) is slidably connected to one side of the fixed block (32). The sliding strip (34) is connected to the T-shaped block (33) and the moving rod (44) respectively through the first hinge rod (35) and the second hinge rod (31).

10. The energy-saving wheel hub heat treatment complete heating equipment according to claim 1, characterized in that, A heat insulation partition (23) is fixedly connected inside the processing box (10), and a sealing brush is fixedly connected on the heat insulation partition (23). Both the processing box (10) and the heat insulation partition (23) are provided with perforations for steel to pass through.

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