Energy-saving type electric heating quenching furnace

Abstract

The energy-saving type electric heating quenching furnace comprises a bottom plate, a first supporting frame, a second supporting frame, a third supporting frame, four supporting legs and a fourth supporting frame are fixedly installed at the top of the bottom plate, a preheating bin is fixedly installed on the first supporting frame, and a waste heat self-plugging feeding opening structure is arranged at the top of the preheating bin; the bottom quenching mechanism is mounted at the tops of the four supporting legs; the quenching furnace is mounted at the top of the bottom quenching mechanism; and the top quenching mechanism is mounted at the top of the quenching furnace. The triangular tension structure of the metal net belt can be adjusted, the phenomena that the metal net belt is loosened after long-time use and waste heat enters the preheating bin are avoided, metal can be preheated when the metal net belt conveys the metal, the purpose of recycling heat is achieved, heat loss is reduced, the oxygen probe is additionally arranged, and the atmosphere of the inner container can be detected and controlled; and heat is recovered into the quenching furnace by adopting spiral blanking, so that the heat is recycled, and the energy-saving and environment-friendly functions are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal energy-saving quenching, and particularly to an energy-saving electric quenching furnace. Background Art

[0002] A quenching furnace is a furnace for heating workpieces before quenching. When the quenching furnace is working, the workpieces are put into the furnace and heated to the quenching temperature above the critical point and maintained for a certain period of time, and then the workpieces are quickly taken out of the furnace and put into the quenching liquid (oil or water) for quenching. The heat source of the furnace can be electricity and fuel, and the temperature can be measured by a thermocouple. The quenching furnace is composed of a furnace body, a furnace door, heating elements, a ventilation mechanism, a control system, etc.

[0003] After retrieval, the publication number: CN219156926U discloses an intelligent high-temperature muffle furnace, which discloses a waste heat recovery and treatment energy-saving quenching furnace, including a quenching furnace body: a water tank is arranged on the right side of the quenching furnace body, a heat conduction tube is arranged in the inner cavity of the water tank, one end of the heat conduction tube close to the quenching furnace body is communicated with the quenching furnace body through a connecting pipe one, and the other end of the heat conduction tube far from the quenching furnace body is connected with a blower, and the air outlet of the blower is communicated with a connecting pipe two. By the work of the blower, the hot air in the quenching furnace body is extracted and passes through the inner cavity of the heat conduction tube to heat the water in the inner cavity of the water tank, so as to convert the waste heat in the quenching furnace body into hot water for use as domestic hot water for employees. When the hot water in the water tank is discharged, the floating plate will drop as the water surface drops, thereby driving the movable plug to slide towards each other, so that the water inlet pipe intakes water into the inner cavity of the water tank to realize automatic water intake, and the purpose of saving energy and reducing air pollution can be achieved.

[0004] Although the existing quenching furnaces can reduce air pollution, they still cannot achieve complete pollution-free with the traditional combustion heating method. The heat of quenching is not recycled, resulting in great waste of thermal energy, and the energy-saving and environmental protection functions need to be improved. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides an energy-saving electric quenching furnace, which solves the problems that although the existing quenching furnaces can reduce air pollution, they still cannot achieve complete pollution-free with the traditional combustion heating method, the heat of quenching is not recycled, resulting in great waste of thermal energy, and the energy-saving and environmental protection functions need to be improved.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: An energy-saving electric quenching furnace, comprising: A bottom plate, on the top of which a first support frame, a second support frame, a third support frame, four support legs and a fourth support frame are fixedly installed. A preheating bin is fixedly installed on the first support frame, and a waste heat self-sealing feeding port structure is arranged on the top of the preheating bin; The bottom quenching mechanism is installed on the top of four support legs; The quenching furnace is installed on the top of the bottom quenching mechanism; The top quenching mechanism is installed on the top of the quenching furnace; The conveyor roller mechanism is installed between the first support frame, the second support frame and the third support frame. A metal mesh belt is drivingly connected to the conveyor roller mechanism, and anti-slip patterns are arranged on the outer surface of the metal mesh belt; The triangular sealing mechanism is installed on the front side of the quenching furnace and cooperates with the metal mesh belt.

[0007] Preferably, the waste heat self-sealing feeding port structure includes a rectangular cylinder. Two sealing plates are rotatably installed in the rectangular cylinder. Torsion bars are fixedly installed on both sides of the two sealing plates. Torsion springs are sleeved on the outer sides of the torsion bars. One end of the torsion spring is fixedly installed with the torsion bar, and the other end of the torsion spring is fixedly installed with the outer side of the rectangular cylinder. Two blocking plates are fixedly installed inside the rectangular cylinder. When metal is put into the rectangular cylinder, the two sealing plates are opened under the action of the gravity of the metal, so that the metal falls onto the top of the metal mesh belt. Then, under the torsion action of the two torsion springs, the two sealing plates are closed to close the rectangular cylinder, which can reduce heat dissipation. The waste heat enters the inside of the preheating bin, and the metal can be preheated when the metal mesh belt conveys the metal, achieving the purpose of heat recovery and utilization.

[0008] Preferably, the bottom quenching mechanism includes a bottom box seat. The bottom of the bottom box seat is fixedly installed with the top ends of the four support legs. A plurality of bottom heating plates are arranged inside the bottom box seat. A metal support plate is arranged on the top of the bottom box seat. A plurality of strip holes are opened on the metal support plate. A leveling roller is rotatably installed at the front end of the metal support plate. The leveling roller is used for conducting and supporting the metal mesh belt, and the metal support plate is used for supporting the metal mesh belt.

[0009] Preferably, the front end of the quenching furnace is an opening and is communicated with the bottom quenching mechanism. A bottom port is opened at the bottom of the quenching furnace, a top port is opened at the top end of the quenching furnace, and a discharge pipe is communicated with the bottom end of the quenching furnace. A spiral seal feeding mechanism is installed in the discharge pipe. The quenching position of the metal mesh belt is located inside the quenching furnace. The bottom port is communicated with the bottom box seat. The spiral seal feeding mechanism includes a servo motor installed on the top of the quenching furnace. A motor shaft is installed on the output shaft of the servo motor. The motor shaft is rotatably installed with the quenching furnace through a bearing. A spiral blade is welded on the outer side of the motor shaft. The spiral blade is in sealed sliding connection with the inner wall of the discharge pipe. A plurality of air holes are opened on the spiral blade; the servo motor drives the motor shaft to rotate, the motor shaft drives the spiral blade to rotate, and the spiral blade rotates to convey the parts downward, and the parts can be slowly exported from the discharge pipe. The spiral blade is in sealed sliding connection with the discharge pipe, and the downwardly conveyed heat or hot air is conveyed upward through a plurality of air holes to recover the heat to the inside of the quenching furnace for heat recovery and utilization, which is energy-saving and environment-friendly.

[0010] Preferably, the top quenching mechanism includes a top box seat with an open top. A plurality of top heating plates are installed inside the top box seat. An air supply pipe is connected to the top box seat, and a solenoid valve is provided on the air supply pipe. Three oxygen detection meters are arranged on the top box seat. The bottom ends of the three oxygen detection meters all extend into the top box seat and are equipped with oxygen detection heads. The bottom end of the air supply pipe is connected to an air outlet, and the top box seat is connected to the top opening. The three groups of oxygen detection meters and three groups of oxygen detection heads are provided to monitor the oxygen inside the quenching furnace. When the oxygen content exceeds the limit, nitrogen is automatically replenished.

[0011] Preferably, the tightness adjustment mechanism includes a support bar fixedly installed on the top of the third support frame. A threaded rod is threadedly connected to the center position of the top of the support bar. The bottom end of the threaded rod is rotatably installed with an n-shaped frame plate. An adjustment roller is rotatably installed inside the n-shaped frame plate and is in contact with the outer side of the metal mesh belt. Two guiding slide bars are fixedly installed on the top of the n-shaped frame plate, and both guiding slide bars are vertically slidably connected to the support bar. Rotating the threaded rod causes it to move threadedly on the support bar, and the threaded rod drives the n-shaped frame plate to adjust its height. The two guiding slide bars provided ensure that the n-shaped frame plate moves vertically. The n-shaped frame plate drives the adjustment roller to adjust its height to adjust the tightness of the metal mesh belt drive.

[0012] Preferably, the conveyor roller mechanism includes a first conveyor roller, a second conveyor roller, a third conveyor roller, a fourth conveyor roller, and a fifth conveyor roller. The first conveyor roller and the second conveyor roller are both rotatably installed inside the first support frame. The second conveyor roller is located above the first conveyor roller. The third conveyor roller is rotatably installed on the second support frame. The fourth conveyor roller is rotatably installed on the front side of the quenching furnace. The fifth conveyor roller is rotatably installed inside the quenching furnace. The first conveyor roller, the second conveyor roller, the third conveyor roller, the fourth conveyor roller, and the fifth conveyor roller are all in contact with the metal mesh belt for conveying the metal mesh belt. The third conveyor roller, the adjustment roller, and the fourth conveyor roller cooperate to form an inverted triangular structure with the metal mesh belt.

[0013] Preferably, a motor is arranged on the side of the bottom plate. The output end of the motor is connected with a driving gear. A gear belt is drivingly connected to the driving gear. A driven gear is connected to the gear belt. The driven gear is fixedly connected with the first conveying roller. The other end of the first conveying roller is provided with a first shaft gear. A double gear shaft is rotatably installed on the fourth support frame. A first transmission belt is meshed on the outer sides of the first shaft gear and the double gear shaft. A second shaft gear is installed on the outer side of the fifth conveying roller. The second shaft gear is rotatably installed with the quenching furnace through a bearing. A second transmission belt is meshed on the outer sides of the second shaft gear and the double gear shaft. When the motor works, the first conveying roller is driven to rotate through the driving gear, the gear belt and the driven gear. The first conveying roller drives the metal mesh belt in cooperation with the second conveying roller, and the parts can be sent towards the quenching furnace. The rotation of the first conveying roller drives the double gear shaft to rotate through the cooperation of the first shaft gear, the double gear shaft and the first transmission belt. The rotation of the fifth conveying roller is driven through the cooperation of the second shaft gear and the second transmission belt. The fifth conveying roller pulls the metal mesh belt. By synchronously conveying and pulling the metal mesh belt front and back, the service life of the metal mesh belt is increased, and energy is saved and the environment is protected.

[0014] Preferably, the triangular sealing mechanism includes a monitor and a triangular box. The monitor is installed on the front side of the quenching furnace. The rear side of the triangular box is open and fixedly installed on the front side of the quenching furnace. The monitor is located above the triangular box. A transmission hole is formed in the triangular box. The metal mesh belt is adapted to the transmission hole. Two support blocks are fixedly installed on the inclined surface of the triangular box. Synchronous motors are installed on the outer sides of the two support blocks. Rotating shafts are rotatably installed on the two support blocks. The two rotating shafts are fixedly installed with the output shafts of the two synchronous motors. The flip sealing plate is located outside the transmission hole. The monitor monitors the parts. The two synchronous motors drive the flip sealing plate to flip through the two rotating shafts, open the transmission hole, and enable the parts to enter the interior of the quenching furnace. Then the two synchronous motors work in the reverse direction, and the flip sealing plate seals the transmission hole, reducing heat dissipation and saving energy.

[0015] Preferably, an installation hole is formed in the top of the preheating bin. A rectangular cylinder is fixedly installed inside the installation hole. A matching hole is formed in the bottom end of the preheating bin. The metal mesh belt is adapted to the matching hole. The top edge of the metal mesh belt is located inside the preheating bin. An inclined surface opening is arranged on one side of the preheating bin. The inclined surface opening is fixedly installed with the triangular box in a sealed manner.

[0016] Compared with the prior art, the beneficial effects that the present invention can achieve are: The motor of this device drives the first conveyor roller to rotate through a driving gear, a gear belt, and a driven gear. The first conveyor roller drives the metal mesh belt in cooperation with the second conveyor roller, and can send parts in the direction of the quenching furnace. The rotation of the first conveyor roller drives the double gear shaft to rotate through the cooperation of a first shaft gear, a double gear shaft, and a first transmission belt, and drives the fifth conveyor roller to rotate through the cooperation of a second shaft gear and a second transmission belt. The fifth conveyor roller pulls the metal mesh belt, and the metal mesh belt is transmitted and pulled synchronously front and back, increasing the service life of the metal mesh belt; The stepped temperature control quenching system of this device: It adopts a 3-stage heating zone composed of a bottom heating plate and a top heating plate to achieve gradient temperature control (preheating zone / quenching zone / slow cooling zone), with a temperature fluctuation of ±5°C, improving the quenching efficiency. Electric heating quenching is used to avoid environmental pollution caused by waste gas; The triangular tension structure of the metal mesh belt of this device can be adjusted. Rotate the threaded rod to move it threadedly on the support bar, and the threaded rod drives the n-shaped frame plate to adjust its height. Two set guiding slide rods ensure the vertical movement of the n-shaped frame plate. The n-shaped frame plate drives the adjusting roller to adjust its height, adjusting the tightness of the metal mesh belt transmission, and realizing the adjustment of the metal mesh belt tension intensity; When the parts of this device move to the position of the triangular sealing mechanism, the monitor monitors the parts. Two synchronous motors drive the flipping sealing plates to flip through two flipping shafts, opening the transmission holes, so that the parts enter the interior of the quenching furnace. Then the two synchronous motors work in reverse, and the flipping sealing plates seal the transmission holes, reducing heat loss; The metal of this device is put into the rectangular cylinder. Under the action of the gravity of the metal, two blocking plates are opened, so that the metal falls on the top of the metal mesh belt. Then under the torsional force of two torsion springs, the two blocking plates are closed, closing the rectangular cylinder, which can reduce heat dissipation. When the two sealing plates are opened, the waste heat enters the interior of the preheating bin, and the metal can be preheated when the metal mesh belt conveys the metal, achieving the purpose of heat recovery and utilization; This device fills nitrogen into the top box seat and the quenching furnace through a gas supply pipe to reduce the oxidation degree of the parts during quenching. After the nitrogen enters, it can squeeze out the oxygen. Three sets of oxygen detection meters and three sets of oxygen detection heads are set to monitor the oxygen inside the quenching furnace. When the oxygen content exceeds the limit, nitrogen is automatically replenished; The servo motor of this device drives the motor shaft to rotate, and the motor shaft drives the spiral blade to rotate. The spiral blade rotates to convey the parts downward, and can slowly export the parts from the discharge pipe. The spiral blade is hermetically and slidably connected to the discharge pipe, and the heat or hot air transmitted downward is transmitted upward through multiple ventilation holes to recover the heat into the interior of the quenching furnace for heat recovery and utilization.

[0017] In summary, the triangular tension structure of the metal mesh belt of the present invention can be adjusted to avoid loosening of the metal mesh belt during long-term use and prevent waste heat from entering the interior of the preheating chamber. When the metal mesh belt conveys metal, it can preheat the metal, achieving the purpose of heat recovery and utilization, reducing heat loss, saving energy, and increasing the oxygen probe to detect and control the atmosphere in the inner tank. The heat is recovered to the interior of the quenching furnace by spiral feeding for heat recovery and utilization, saving the consumption of the furnace atmosphere, and having the function of energy conservation and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the front view structural schematic diagram of the present invention; Figure 2 is Figure 1 the structural schematic diagram after disassembling the preheating chamber in Figure 3 is Figure 2 the bottom view structural schematic diagram of Figure 4 is the structural schematic diagram after disassembling the bottom plate, the first support frame, the second support frame, the third support frame, the bottom quenching mechanism and their related parts of the present invention; Figure 5 is Figure 4 the bottom view structural schematic diagram of Figure 6 is the structural schematic diagram of the bottom plate, the first support frame, the second support frame, the third support frame, the bottom quenching mechanism and their related parts of the present invention; Figure 7 is the structural schematic diagram of the quenching furnace and its related parts of the present invention; Figure 8 is for the present invention Figure 7 the bottom view structural schematic diagram of Figure 9 is the structural schematic diagram of the top quenching mechanism and its related parts of the present invention; Figure 10 is for the present invention Figure 9 the bottom view structural schematic diagram of Figure 11 is the structural schematic diagram of the triangular box and its related parts of the present invention; Figure 12 is the perspective structural schematic diagram of the flip sealing plate and its related parts of the present invention; Figure 13 is the structural schematic diagram of the spiral sealing feeding mechanism and its related parts of the present invention; Figure 14 is the structural schematic diagram of the tightness adjustment mechanism and its related parts of the present invention; Figure 15 is the structural schematic diagram of the double gear shaft of the present invention; Figure 16Structural schematic diagram of the waste heat self-sealing feeding port structure of the present invention; Figure 17 Structural schematic diagram of the preheating bin of the present invention; Figure 18 Bottom view structural schematic diagram of the preheating bin of the present invention; Figure 19 Structural schematic diagram of the plugging plate, two torsion bars and two torsion springs of the present invention.

[0019] Wherein: 1. Bottom plate; 11. First support frame; 12. Second support frame; 13. Third support frame; 14. Support leg; 15. Fourth support frame; 16. Preheating bin; 161. Matching hole; 162. Mounting hole; 17. Waste heat self-sealing feeding port structure; 171. Rectangular cylinder; 172. Baffle plate; 173. Plugging plate; 174. Torsion bar; 175. Torsion spring; 2. Motor; 21. Gear belt; 211. Driving gear; 212. Driven gear; 22. First shaft gear; 23. Double gear shaft; 24. Second shaft gear; 25. First transmission belt; 26. Second transmission belt; 3. Bottom quenching mechanism; 31. Bottom box seat; 32. Metal support plate; 33. Strip hole; 34. Flattening roller; 35. Bottom heating plate; 4. Quenching furnace; 41. Bottom opening; 42. Top opening; 46. Discharge pipe; 47. Spiral sealed feeding mechanism; 471. Motor; 472. Motor shaft; 473. Spiral blade; 474. Vent hole; 5. Top quenching mechanism; 51. Top box seat; 52. Solenoid valve; 53. Oxygen detection meter; 54. Gas supply pipe; 55. Top heating plate; 56. Air outlet; 57. Oxygen detection head; 6. Triangular sealing mechanism; 61. Monitor; 62. Triangular box; 63. Transmission hole; 64. Synchronous motor; 65. Support block; 66. Flip sealing plate; 67. Flip shaft; 7. Tightness adjustment mechanism; 71. Support bar; 72. Threaded rod; 73. Guide slide bar; 74. N-shaped frame plate; 75. Adjusting roller; 8. Metal mesh belt; 9. Conveyor roller mechanism; 91. First conveyor roller; 92. Second conveyor roller; 93. Third conveyor roller; 94. Fourth conveyor roller. Detailed implementation manners

[0020] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments. However, the following embodiments are only the preferred embodiments of the present invention, not all of them. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments are all conventional methods unless otherwise specified, and the materials, reagents, etc. used in the following embodiments can be obtained from commercial channels unless otherwise specified. Embodiment

[0021] As Figure 1 、 Figure 2 、 Figure 6 、 Figures 16 - 19 As shown, the present invention provides an energy-saving electric quenching furnace, which includes a bottom plate 1, a bottom quenching mechanism 3, a quenching furnace 4, a top quenching mechanism 5 and a conveyor roller mechanism 9. A nano-ceramic fiber layer (with a thickness of 10 mm) is additionally pasted on the inner wall of the quenching furnace 4 to reduce heat loss to 8%. On the top of the bottom plate 1, a first support frame 11, a second support frame 12, a third support frame 13, four support legs 14 and a fourth support frame 15 are fixedly installed. A preheating chamber 16 is fixedly installed on the first support frame 11. A waste heat self-sealing feeding port structure 17 is arranged on the top of the preheating chamber 16. The bottom quenching mechanism 3 is installed on the top of the four support legs 14. The quenching furnace 4 is installed on the top of the bottom quenching mechanism 3. The top quenching mechanism 5 is installed on the top of the quenching furnace 4. The conveyor roller mechanism 9 is installed between the first support frame 11, the second support frame 12 and the third support frame 13. A metal mesh belt 8 is drivingly connected on the conveyor roller mechanism 9. Anti-slip lines are arranged on the outer surface of the metal mesh belt 8. The waste heat self-sealing feeding port structure 17 includes a rectangular cylinder 171. Two blocking plates 173 are rotatably installed in the rectangular cylinder 171. Torsion bars 174 are fixedly installed on both sides of the two blocking plates 173. A torsion spring 175 is sleeved on the outer side of the torsion bar 174. One end of the torsion spring 175 is fixedly installed with the torsion bar 174, and the other end of the torsion spring 175 is fixedly installed with the outer side of the rectangular cylinder 171. Two blocking plates 172 are fixedly installed inside the rectangular cylinder 171. When metal is put into the rectangular cylinder 171, the two blocking plates 173 are opened under the gravity of the metal, so that the metal falls onto the top of the metal mesh belt 8. Then, under the torsion of the two torsion springs 175, the two blocking plates 173 are closed to close the rectangular cylinder 171, which can reduce heat dissipation. The waste heat enters the inside of the preheating chamber 16, and the metal can be preheated when the metal mesh belt 8 conveys the metal, achieving the purpose of heat recovery and utilization.

[0022] As Figure 6As shown in the figure, in this embodiment, the bottom quenching mechanism 3 includes a bottom box base 31. The bottom of the bottom box base 31 is fixedly installed with the tops of four support legs 14. A plurality of bottom heating plates 35 are arranged inside the bottom box base 31. A metal support plate 32 is arranged on the top of the bottom box base 31. A plurality of strip-shaped holes 33 are formed in the metal support plate 32. A leveling roller 34 is rotatably installed at the front end of the metal support plate 32. The leveling roller 34 is used for conducting and supporting the metal mesh belt 8, and the metal support plate 32 is used for supporting the metal mesh belt 8.

[0023] As Figure 7 , Figure 8 , Figure 13 shown in the figure, in this embodiment, the front end of the quenching furnace 4 is an opening and is connected to the bottom quenching mechanism 3. A bottom opening 41 is formed in the bottom of the quenching furnace 4, and a top opening 42 is formed in the top of the quenching furnace 4. A discharge pipe 46 is connected to the bottom end of the quenching furnace 4. A spiral sealed feeding mechanism 47 is installed in the discharge pipe 46. The quenching position of the metal mesh belt 8 is located inside the quenching furnace 4. The bottom opening 41 is connected to the bottom box base 31. The spiral sealed feeding mechanism 47 includes a servo motor 471. The servo motor 471 is installed on the top of the quenching furnace 4. A motor shaft 472 is installed on the output shaft of the servo motor 471. The motor shaft 472 is rotatably installed with the quenching furnace 4 through a bearing. A spiral blade 473 is welded on the outer side of the motor shaft 472. The spiral blade 473 is in sealed sliding connection with the inner wall of the discharge pipe 46. A plurality of air holes 474 are formed in the spiral blade 473. The servo motor 471 drives the motor shaft 472 to rotate, the motor shaft 472 drives the spiral blade 473 to rotate, and the spiral blade 473 rotates to convey the parts downward, and the parts can be slowly exported from the discharge pipe 46. The spiral blade 473 is in sealed sliding connection with the discharge pipe 46, and the heat or hot air conveyed downward is conveyed upward through a plurality of air holes 474 to recycle the heat to the inside of the quenching furnace 4 for heat recovery and utilization, saving energy and protecting the environment.

[0024] Specifically, when the inclination angle of the spiral blade 473 is 35° and the air holes are 474, and the discharge temperature drops from 850 °C to 400 °C, the heat energy recovery rate is 61%, and the servo motor 471 is cooperated to realize stepless speed regulation feeding of 0.5 - 5 kg / min.

[0025] As Figure 9 , Figure 10As shown in the figure, in this embodiment, the top quenching mechanism 5 includes a top box seat 51. The top of the top box seat 51 is open. A plurality of top heating plates 55 are installed inside the top box seat 51. An air supply pipe 54 is connected to the top box seat 51. An electromagnetic valve 52 is arranged on the air supply pipe 54. Three oxygen detection meters 53 are arranged on the top box seat 51. The bottom ends of the three oxygen detection meters 53 all extend into the top box seat 51 and are equipped with oxygen detection heads 57. The bottom end of the air supply pipe 54 is connected to an air outlet 56. The top box seat 51 is communicated with the top opening 42; the three groups of oxygen detection meters 53 and the three groups of oxygen detection heads 57 are provided to monitor the oxygen inside the quenching furnace 4. When the oxygen content exceeds the limit, nitrogen is automatically supplemented.

[0026] Specifically, a three-stage heating zone composed of 5 groups of bottom heating plates 35 and 5 groups of top heating plates 55 is adopted to achieve gradient temperature control (preheating zone / quenching zone / slow cooling zone). The temperature fluctuation is ±5°C (±15°C for traditional equipment). The measured thermal efficiency is increased by 23%, and the energy consumption is reduced by 18%.

[0027] As Figure 6 、 Figure 14 As shown in the figure, in this embodiment, the tightness adjustment mechanism 7 includes a support bar 71. The support bar 71 is fixedly installed on the top of the third support frame 13. A threaded rod 72 is threadedly connected to the center position of the top of the support bar 71. The bottom end of the threaded rod 72 is rotatably installed with an n-shaped frame plate 74. An adjustment roller 75 is rotatably installed inside the n-shaped frame plate 74. The adjustment roller 75 is in contact with the outer side of the metal mesh belt 8. Two guide slide bars 73 are fixedly installed on the top of the n-shaped frame plate 74. Both of the two guide slide bars 73 are vertically slidably connected to the support bar 71; by rotating the threaded rod 72, it moves threadedly on the support bar 71. The threaded rod 72 drives the n-shaped frame plate 74 to adjust the height. The two set guide slide bars 73 ensure the vertical movement of the n-shaped frame plate 74. The n-shaped frame plate 74 drives the adjustment roller 75 to adjust the height, and adjusts the tightness of the transmission of the metal mesh belt 8.

[0028] As Figures 2 - 4 As shown in the figure, in this embodiment, the conveyor roller mechanism 9 includes a first conveyor roller 91, a second conveyor roller 92, a third conveyor roller 93, a fourth conveyor roller 94 and a fifth conveyor roller. The first conveyor roller 91 and the second conveyor roller 92 are both rotatably installed inside the first support frame 11. The second conveyor roller 92 is located above the first conveyor roller 91. The third conveyor roller 93 is rotatably installed on the second support frame 12. The fourth conveyor roller 94 is rotatably installed on the front side of the quenching furnace 4. The fifth conveyor roller is rotatably installed inside the quenching furnace 4. The first conveyor roller 91, the second conveyor roller 92, the third conveyor roller 93, the fourth conveyor roller 94 and the fifth conveyor roller are all in contact with the metal mesh belt 8 and are used to convey the metal mesh belt 8. The third conveyor roller 93, the adjustment roller 75 and the fourth conveyor roller 94 cooperate to form an inverted triangle structure for the metal mesh belt 8.

[0029] Specifically, the metal mesh belt 8 (with an inverted triangle tension structure cooperating with 5 groups of conveyor rollers, the belt offset < 1.5 mm (the traditional structure > 5 mm), the transmission stability is improved by 67%, the triangular sealing mechanism realizes a dynamic opening rate of 0.8 - 1.2 times / second, and the heat loss is reduced by 42%.

[0030] As Figures 2 - 4 , Figure 15 shown, in this embodiment, a motor 2 is arranged on the side of the bottom plate 1. The output end of the motor 2 is connected with a driving gear 211. A gear belt 21 is drivingly connected to the driving gear 211. A driven gear 212 is connected to the gear belt 21. The driven gear 212 is fixedly connected with the first conveyor roller 91. A first shaft gear 22 is installed at the other end of the first conveyor roller 91. A double gear shaft 23 is rotatably installed on the fourth support frame 15. A first transmission belt 25 is meshed on the outer sides of the first shaft gear 22 and the double gear shaft 23. A second shaft gear 24 is installed on the outer side of the fifth conveyor roller. The second shaft gear 24 is rotatably installed with the quenching furnace 4 through a bearing. A second transmission belt 26 is meshed on the outer sides of the second shaft gear 24 and the double gear shaft 23. When the motor 2 works, it drives the first conveyor roller 91 to rotate through the driving gear 211, the gear belt 21 and the driven gear 212. The first conveyor roller 91 drives the metal mesh belt 8 through the cooperation of the second conveyor roller 92, and can send the parts in the direction of the quenching furnace 4. The rotation of the first conveyor roller 91 drives the double gear shaft 23 to rotate through the cooperation of the first shaft gear 22, the double gear shaft 23 and the first transmission belt 25. The rotation of the fifth conveyor roller is driven through the cooperation of the second shaft gear 24 and the second transmission belt 26. The fifth conveyor roller pulls the metal mesh belt 8. By synchronously conveying and pulling the metal mesh belt 8 before and after, the service life of the metal mesh belt 8 is increased.

[0031] As Figures 16 - 18 shown, in this embodiment, an installation hole 162 is opened at the top of the preheating bin 16. A rectangular cylinder 171 is fixedly installed inside the installation hole 162. A matching hole 161 is opened at the bottom end of the preheating bin 16. The metal mesh belt 8 is adapted to the matching hole 161. The top edge of the metal mesh belt 8 is located inside the preheating bin 16. An inclined surface opening 163 is arranged on one side of the preheating bin 16. The inclined surface opening 163 is fixedly installed in a sealed manner with the triangular box 62.

[0032] Working mode: When in use, power on the power supply and the computer controller. Put the metal into the rectangular cylinder 171. Under the gravity of the metal, the two plugging plates 173 are opened, allowing the metal to fall onto the top of the metal mesh belt 8. Then, under the torsional force of the two torsion springs 175, the two plugging plates 173 are closed to close the rectangular cylinder 171, which can reduce heat dissipation. The waste heat enters the inside of the preheating bin 16, and the metal can be preheated when the metal mesh belt 8 conveys the metal, achieving the purpose of heat recovery and utilization. The motor 2 works to drive the first conveying roller 91 to rotate through the driving gear 211, the gear belt 21, and the driven gear 212. The first conveying roller 91 drives the metal mesh belt 8 through the cooperation of the second conveying roller 92, and the parts can be sent in the direction of the quenching furnace 4. The rotation of the first conveying roller 91 drives the double gear shaft 23 to rotate through the cooperation of the first shaft gear 22, the double gear shaft 23, and the first transmission belt 25. The fifth conveying roller is driven to rotate through the cooperation of the second shaft gear 24 and the second transmission belt 26. The fifth conveying roller pulls the metal mesh belt 8. By synchronously conveying and pulling the metal mesh belt 8 back and forth, the service life of the metal mesh belt 8 is increased; By rotating the threaded rod 72 to move it threadedly on the support bar 71, the threaded rod 72 drives the n-shaped frame plate 74 to adjust the height. The two guiding slide rods 73 provided ensure the vertical movement of the n-shaped frame plate 74. The n-shaped frame plate 74 drives the adjusting roller 75 to adjust the height and adjust the tightness of the transmission of the metal mesh belt 8; The provided bottom heating plate 35 and top heating plate 55 work simultaneously to heat the inside of the quenching furnace 4. Multiple groups of bottom heating plates 35 and top heating plates 55 divide the inside of the quenching furnace 4 into three heating and quenching zones with different quenching temperatures; Nitrogen is filled into the top box seat 51 and the quenching furnace 4 through the air supply pipe 54 to reduce the oxidation degree of the parts during quenching. After the nitrogen enters, the oxygen can be squeezed out. The three groups of oxygen detection meters 53 and the three groups of oxygen detection heads 57 provided are used to monitor the oxygen inside the quenching furnace 4. When the oxygen content exceeds the standard, nitrogen is automatically supplemented; After the parts are quenched, they fall into the discharge pipe 46 and onto the top of the spiral blade 473. The servo motor 471 drives the motor shaft 472 to rotate, and the motor shaft 472 drives the spiral blade 473 to rotate. The spiral blade 473 rotates to convey the parts downward, and the parts can be slowly exported from the discharge pipe 46. The spiral blade 473 is hermetically and slidably connected to the discharge pipe 46. The heat or hot air transmitted downward is transmitted upward through multiple ventilation holes 474 to recover the heat into the inside of the quenching furnace 4 for heat recovery and utilization. Embodiment

[0033] Such as Figure 1 、 Figure 3 、 Figure 10 、 Figure 11As shown, this embodiment is further optimized on the basis of Embodiment 1. The same parts as the foregoing technical solutions will not be described herein again. For example Figure 2 , Figure 3 As shown, in order to better implement the present invention, the following setting method is particularly adopted: In this embodiment, a triangular sealing mechanism 6 is fixedly installed on the front side of the quenching furnace 4, and the triangular sealing mechanism 6 cooperates with the metal mesh belt 8.

[0034] For example Figure 10 , Figure 11 As shown, in this embodiment, the triangular sealing mechanism 6 includes a monitor 61 and a triangular box 62. The monitor 61 is installed on the front side of the quenching furnace 4. The rear side of the triangular box 62 is open and fixedly installed on the front side of the quenching furnace 4. The monitor 61 is located above the triangular box 62. A transfer hole 63 is provided on the triangular box 62. The metal mesh belt 8 is adapted to the transfer hole 63. Two support blocks 65 are fixedly installed on the inclined surface of the triangular box 62. Synchronous motors 64 are installed on the outer sides of the two support blocks 65. Rotating shafts 67 are rotatably installed on the two support blocks 65. The two rotating shafts 67 are fixedly installed on the output shafts of the two synchronous motors 64.

[0035] In this embodiment, in the working mode, when the part moves to the position of the triangular sealing mechanism 6, the monitor 61 monitors the part. The two synchronous motors 64 drive the flip sealing plate 66 to flip through the two rotating shafts 67, open the transfer hole 63, so that the part enters the interior of the quenching furnace 4. Then the two synchronous motors 64 work in the reverse direction, and the flip sealing plate 66 seals the transfer hole 63. The reserved gap is sufficient for the transfer of the metal mesh belt 8, reducing heat dissipation.

[0036] Machine test data:

[0037] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving electrothermal quenching furnace, characterized in that: Including: A bottom plate (1), on the top of the bottom plate (1), a first support frame (11), a second support frame (12), a third support frame (13), four support legs (14) and a fourth support frame (15) are fixedly installed. On the first support frame (11), a preheating chamber (16) is fixedly installed, and on the top of the preheating chamber (16), a waste heat self-sealing feeding port structure (17) is arranged; A bottom quenching mechanism (3), installed on the tops of the four support legs (14); A quenching furnace (4), installed on the top of the bottom quenching mechanism (3); A top quenching mechanism (5), installed on the top of the quenching furnace (4); A conveying roller mechanism (9), installed between the first support frame (11), the second support frame (12) and the third support frame (13). A metal mesh belt (8) is drivingly connected to the conveying roller mechanism (9), and anti-slip lines are arranged on the outer surface of the metal mesh belt (8); A triangular sealing mechanism (6), installed on the front side of the quenching furnace (4), and cooperating with the metal mesh belt (8).

2. An energy-saving electric heating quenching furnace according to claim 1, wherein: The waste heat self-sealing feeding port structure (17) includes a rectangular cylinder (171). Two blocking plates (173) are rotatably installed in the rectangular cylinder (171). On both sides of the two blocking plates (173), torsion bars (174) are fixedly installed. A torsion spring (175) is sleeved on the outer side of the torsion bar (174). One end of the torsion spring (175) is fixedly installed with the torsion bar (174), and the other end of the torsion spring (175) is fixedly installed with the outer side of the rectangular cylinder (171). Two blocking plates (172) are fixedly installed inside the rectangular cylinder (171).

3. An energy-saving electric heating quenching furnace according to claim 1, wherein: The bottom quenching mechanism (3) includes a bottom box seat (31). The bottom of the bottom box seat (31) is fixedly installed with the tops of the four support legs (14). A plurality of bottom heating plates (35) are arranged inside the bottom box seat (31). A metal support plate (32) is arranged on the top of the bottom box seat (31). A plurality of strip-shaped holes (33) are formed in the metal support plate (32). A leveling roller (34) is rotatably installed at the front end of the metal support plate (32). The leveling roller (34) is used for conducting and supporting the metal mesh belt (8). The front end of the quenching furnace (4) is an opening and is communicated with the bottom quenching mechanism (3). A bottom opening (41) is formed at the bottom of the quenching furnace (4), and a top opening (42) is formed at the top of the quenching furnace (4). A discharge pipe (46) is communicated with the bottom end of the quenching furnace (4). A spiral sealing blanking mechanism (47) is installed in the discharge pipe (46). The quenching position of the metal mesh belt (8) is located inside the quenching furnace (4), and the bottom opening (41) is communicated with the bottom box seat (31).

4. An energy-saving electric heating quenching furnace according to claim 3, wherein: The spiral seal blanking mechanism (47) includes a servo motor (471). The servo motor (471) is installed on the top of the quenching furnace (4). A motor shaft (472) is installed on the output shaft of the servo motor (471). The motor shaft (472) is rotatably installed with the quenching furnace (4) through a bearing. A spiral blade (473) is welded on the outer side of the motor shaft (472). The spiral blade (473) is in sealed sliding connection with the inner wall of the discharge pipe (46). A plurality of air holes (474) are formed in the spiral blade (473).

5. The energy-saving electric heating quenching furnace according to claim 3, characterized in that: The top quenching mechanism (5) includes a top box seat (51). The top of the top box seat (51) is open. A plurality of top heating plates (55) are installed inside the top box seat (51). An air supply pipe (54) is communicated with the top box seat (51). A solenoid valve (52) is arranged on the air supply pipe (54). Three oxygen detection meters (53) are arranged on the top box seat (51). The bottom ends of the three oxygen detection meters (53) all extend into the top box seat (51) and are installed with oxygen detection heads (57). The bottom end of the air supply pipe (54) is communicated with an air outlet (56). The top box seat (51) is communicated with the top opening (42).

6. The energy-saving electric heating quenching furnace according to claim 1, characterized in that: The tightness adjustment mechanism (7) includes a support bar (71). The support bar (71) is fixedly installed on the top of the third support frame (13). A threaded rod (72) is threadedly connected to the center position of the top of the support bar (71). The bottom end of the threaded rod (72) is rotatably installed with an n-shaped frame plate (74). An adjusting roller (75) is rotatably installed inside the n-shaped frame plate (74). The adjusting roller (75) is in contact with the outer side of the metal mesh belt (8). Two guide sliding rods (73) are fixedly installed on the top of the n-shaped frame plate (74). Both of the two guide sliding rods (73) are vertically slidably connected with the support bar (71).

7. The energy-saving electric heating quenching furnace according to claim 1, characterized in that: The conveying roller mechanism (9) includes a first conveying roller (91), a second conveying roller (92), a third conveying roller (93), a fourth conveying roller (94) and a fifth conveying roller. The first conveying roller (91) and the second conveying roller (92) are both rotatably installed inside the first support frame (11). The second conveying roller (92) is located above the first conveying roller (91). The third conveying roller (93) is rotatably installed on the second support frame (12). The fourth conveying roller (94) is rotatably installed on the front side of the quenching furnace (4). The fifth conveying roller is rotatably installed inside the quenching furnace (4). The first conveying roller (91), the second conveying roller (92), the third conveying roller (93), the fourth conveying roller (94) and the fifth conveying roller are all in contact with the metal mesh belt (8) for conveying the metal mesh belt (8). The third conveying roller (93), the adjusting roller (75) and the fourth conveying roller (94) cooperate to form an inverted triangle structure of the metal mesh belt (8).

8. The energy-saving electric heating quenching furnace according to claim 7, characterized in that: A motor (2) is provided on the side of the bottom plate (1), the output end of the motor (2) is connected to a driving gear (211), the driving gear (211) is connected to a gear belt (21), the gear belt (21) is connected to a driven gear (212), the driven gear (212) is fixedly connected to the first conveying roller (91), the other end of the first conveying roller (91) is installed with a first shaft gear (22), a double gear shaft (23) is rotatably installed on the fourth support frame (15), the first shaft gear (22) and the outer side of the double gear shaft (23) are meshed with a first transmission belt (25), a second shaft gear (24) is installed on the outer side of the fifth conveying roller, the second shaft gear (24) is rotatably installed with the quenching furnace (4) through a bearing, and the second shaft gear (24) and the outer side of the double gear shaft (23) are meshed with a second transmission belt (26).

9. The energy-saving electric quenching furnace according to claim 1, characterized in that: The triangular sealing mechanism (6) includes a monitor (61) and a triangular box (62), wherein the monitor (61) is mounted on the front side of the quenching furnace (4), and the rear side of the triangular box (62) is open and fixedly mounted on the front side of the quenching furnace (4). The monitor (61) is located above the triangular box (62), and a transmission hole (63) is provided on the triangular box (62). The metal mesh belt (8) is adapted to the transmission hole (63). Two support blocks (65) are fixedly mounted on the inclined surface of the triangular box (62), and synchronous motors (64) are installed on the outer sides of the two support blocks (65). A flip shaft (67) is rotatably mounted on the two support blocks (65). The two flip shafts (67) are fixedly mounted on the output shafts of the two synchronous motors (64), and the flip sealing plate (66) is located on the outer side of the transmission hole (63).

10. The energy-saving electric quenching furnace according to claim 1, characterized in that: The top of the preheating bin (16) is provided with a mounting hole (162), the rectangular cylinder (171) is fixedly installed inside the mounting hole (162), the bottom of the preheating bin (16) is provided with a matching hole (161), the metal mesh belt (8) is adapted to the matching hole (161), the top edge of the metal mesh belt (8) is located inside the preheating bin (16), and a bevel opening (163) is provided on one side of the preheating bin (16), and the bevel opening (163) is sealed and fixedly installed with the triangular box (62).

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