Isothermal quenching cooling equipment for nodular cast iron and use method of isothermal quenching cooling equipment

Abstract

The invention belongs to the technical field of isothermal quenching cooling, and particularly relates to spheroidal graphite cast iron isothermal quenching cooling equipment and a using method thereof.The spheroidal graphite cast iron isothermal quenching cooling equipment comprises an isothermal box, bases, a guide rail frame, an oil sealing type cooling mechanism, a pressure storage type gas filtering mechanism and an inching type oil supplementing mechanism; the guide rail frames are symmetrically arranged on the inner walls of the two ends of the isothermal box in pairs, and the oil sealing type cooling mechanism comprises an oil supply mechanism, an isothermal mechanism, a material carrying mechanism and a box sealing mechanism. According to the spheroidal graphite cast iron isothermal quenching cooling equipment and the using method thereof, quenching oil consumed in the oil quenching process can be automatically supplemented according to the content of steam and organic waste gas released when the quenching oil makes contact with a high-temperature workpiece, and waste gas generated in the oil quenching process can be pressurized and adsorbed.

Description

Technical Field

[0001] The invention belongs to the technical field of austempering cooling, and in particular relates to a ductile iron austempering cooling device and a use method thereof. Background Art

[0002] Isothermal oil quenching is widely used in the production of ductile iron, especially in situations where high strength, high fatigue strength and high wear resistance are required. Isothermal oil quenching mainly utilizes the cooling characteristics of quenching oil to rapidly cool the ductile iron in the austenite unstable zone, thereby obtaining the required martensite and lower bainite structures.

[0003] The existing austempering cooling equipment has the following problems: Existing austempering cooling equipment is unable to automatically replenish the quenching oil consumed during the oil quenching process based on the content of steam and organic waste gas released when the quenching oil comes into contact with the high-temperature workpiece, resulting in the workpiece not being able to come into contact with sufficient cooling medium during the quenching process, thereby reducing the oil quenching effect on the workpiece. In addition, traditional austempering cooling equipment does not have the ability to pressurize the waste gas generated during the oil quenching process. Therefore, it cannot meet the existing requirements for the use of austempering cooling equipment. Summary of the Invention

[0004] In response to the above situation, in order to overcome the defects of the existing technology, the present solution provides a ductile iron isothermal quenching cooling equipment and its use method, which can automatically replenish the quenching oil consumed during the oil quenching process according to the content of steam and organic waste gas released when the quenching oil comes into contact with the high-temperature workpiece, and can pressurize and adsorb the waste gas generated during the oil quenching process.

[0005] The technical solution adopted in this scheme is as follows: This scheme proposes a ductile iron austempering cooling device, including an isothermal box, a base, a guide rail frame, an oil-sealed cooling mechanism, a pressure storage type air filter mechanism and an inching type oil replenishing mechanism. The base is symmetrically arranged on the bottom wall of the isothermal box, and the isothermal box is set with an upper end open. The guide rail frames are symmetrically arranged in groups of two on the inner walls of the two ends of the isothermal box. The oil-sealed cooling mechanism includes an oil supply mechanism, an isothermal mechanism, a loading mechanism and a box sealing mechanism. The oil supply mechanism is arranged on both sides of the isothermal box. The isothermal mechanism is arranged on the oil supply mechanism, the loading mechanism is arranged inside the isothermal box, the sealing mechanism is arranged at the end of the guide rail frame away from the isothermal box, the pressure storage type air filtering mechanism includes a filtering mechanism and a boosting mechanism, the filtering mechanism is arranged on the inner wall of the sealing mechanism, the boosting mechanism is arranged on the upper wall of the sealing mechanism outside the filtering mechanism, the inching type oil replenishing mechanism includes a measuring mechanism and a quantity keeping mechanism, the measuring mechanism is arranged on the upper wall of the sealing mechanism on the side of the boosting mechanism, and the quantity keeping mechanism is arranged on the bottom wall of the isothermal box.

[0006] As a further preferred embodiment of the present invention, the oil supply mechanism includes an oil supply tank, an oil supply pump, an oil supply pipe and an oil storage cylinder. The oil supply tanks are symmetrically arranged in pairs on the bottom side walls of the two ends of the isothermal box. The oil supply pump is arranged inside the oil supply tank. The oil supply pipe passes through the oil supply tank and is arranged at the oil suction end of the oil supply pump. The oil supply end of the oil supply pump passes through the bottom of the isothermal box. The oil storage cylinder is connected to the end of the oil supply pipe away from the oil supply pump; the isothermal mechanism includes a copper sleeve, a high-frequency coil, a metal rod and a multi-channel temperature tester. The copper sleeve is arranged on the top wall of the oil storage cylinder, the metal rod is arranged on the inner wall of the copper sleeve, the high-frequency coil is arranged on the inner wall of the copper sleeve outside the metal rod, the multi-channel temperature tester is arranged on the side wall of the isothermal box, and the detection ends of the multi-channel temperature tester are respectively connected to the detection ends of the multi-channel temperature tester and the detection ends of the multi-channel temperature tester are respectively connected to the detection ends of the multi-channel temperature tester and the detection ends of the multi-channel temperature tester. It is arranged inside the isothermal box and the oil storage cylinder; the loading mechanism includes a loading slider, a loading mesh box and a loading spring, the loading slider is slidingly arranged on one end of the guide rail frame close to the isothermal box, the loading mesh box is arranged between the loading sliders, the loading mesh box is arranged with an upper opening, and the loading spring is arranged between the loading mesh box and the bottom wall of the isothermal box; the sealing mechanism includes a sealing plate, a sealing spring, a limit block, a threaded hole and a bolt, the sealing plate is slidingly arranged between the end of the guide rail frame away from the isothermal box, the sealing spring is arranged between the sealing plate and the loading slider, the limit blocks are symmetrically arranged on the upper walls of the two ends of the loading mesh box, the threaded holes are symmetrically arranged on both sides of the sealing plate in a group of two, and the bolts are arranged in a group of two and pass through the inner walls on both sides of the isothermal box.

[0007] Preferably, the filtering mechanism includes a filter sleeve, an oil-absorbing cotton layer and an activated carbon adsorption layer, and multiple groups of the filter sleeves are arranged through the inner wall of the sealing plate, the oil-absorbing cotton layer is arranged on the inner wall of the bottom of the filter sleeve, and the activated carbon adsorption layer is arranged on the inner wall of the filter sleeve above the oil-absorbing cotton layer; the boosting mechanism includes a boosting plug and a boosting spring, and the boosting spring is arranged on the upper wall of the sealing plate outside the filter sleeve, and the boosting plug is arranged on the side of the boosting spring away from the sealing plate, and the outer diameter of the end of the boosting plug close to the boosting spring is consistent with the inner diameter of the filter sleeve.

[0008] Specifically, the measuring mechanism includes a measuring frame and a distance measuring sensor. Multiple groups of the measuring frames are arranged on the upper wall of the sealing plate between the filter sleeves, and the distance measuring sensor is arranged on the bottom wall of the measuring frame above the boost plug; the quantity maintenance mechanism includes an oil replenishing tank, an oil replenishing pump and an oil replenishing pipe. The oil replenishing tank is arranged on the bottom wall of the isothermal box, and the oil replenishing pump is symmetrically arranged on both sides of the isothermal box. The liquid suction end of the oil replenishing pump is arranged through the inside of the oil replenishing tank, and the oil replenishing pipe is connected between the isothermal box and the liquid discharge end of the oil replenishing pump.

[0009] Wherein, a controller is provided on the side wall of the isothermal box on one side of the multi-channel temperature tester.

[0010] Preferably, the controller is electrically connected to the oil supply pump, the high-frequency coil, the distance sensor, the oil replenishment pump and the multi-channel temperature tester respectively.

[0011] This proposal proposes a method for using a ductile iron austempering cooling device, the steps of which are as follows: Step 1: quenching oil is stored in the oil storage cylinder, and the heated and insulated ductile iron is placed in the quenching oil for cooling. The ductile iron is placed in the loading net box, and the operator presses down the sealing plate. The sealing plate slides down along the guide frame by deformation, and the sealing plate pushes the loading net box through the limit block. The loading net box slides along the guide frame through the loading slider by deformation of the loading spring into the isothermal box. The sealing plate drives the threaded hole and the bolt to be set horizontally, and the bolt is turned. The bolt is screwed into the threaded hole, and the sealing plate changes from an active state to a fixed state, and the isothermal box is sealed by the sealing plate. At this time, the oil supply pump draws the quenching oil from the oil storage cylinder through the oil pumping end, and the quenching oil enters the isothermal box through the oil supply pipe. As the quenching oil level in the oil storage cylinder drops, the quenching oil level in the isothermal box rises and immerses the ductile iron workpiece placed inside the loading net box. Step 2: Under the obstruction of the sealing plate, the exhaust gas concentration generated inside the isothermal box gradually increases, and the pressure inside the isothermal box increases. The exhaust gas is filtered by the oil-absorbing cotton layer and the activated carbon adsorption layer and then contacts the boost plug. The boost plug is pulled out from the top opening of the filter sleeve under the deformation of the boost spring. The filter sleeve is connected and the exhaust gas inside the isothermal box is discharged; Step 3: When the boost plug is lifted by the filtered exhaust gas inside the isothermal box, the distance between the boost plug and the ranging end of the ranging sensor is shortened. At this time, the oil replenishment pump draws the quenching oil inside the oil replenishment tank through the liquid pumping end, and the quenching oil inside the oil replenishment tank enters the isothermal box through the oil replenishment pipe.

[0012] The beneficial effects achieved by adopting the above structure are as follows: Compared with the existing technology, this solution adopts a sealing method during oil quenching. Through the oil-sealing cooling mechanism, pressure-storage air filtering mechanism and inching oil-replenishing mechanism, under the coordinated use of the oil supply mechanism, isothermal mechanism, loading mechanism, box sealing mechanism, filtering mechanism, pressurizing mechanism, dynamic measuring mechanism and quantity-keeping mechanism, on the one hand, it can prevent the oil mist and organic vapor generated by the contact between the high-temperature workpiece and the quenching oil during oil quenching from diffusing to the outside; on the other hand, it can replenish the quenching oil inside the isothermal box according to the amount of steam and volatility generated by the quenching oil. Oil ensures the cooling performance of the quenching oil, and can filter the organic waste gas generated by the quenching oil under a higher pressure environment, increase the contact opportunities between the waste gas molecules and the surface of the activated carbon adsorption layer, and improve the adsorption efficiency of the organic waste gas. The concentration of the waste gas generated inside the isothermal box gradually increases, and the pressure inside the isothermal box increases. After being filtered by the oil-absorbing cotton layer and the activated carbon adsorption layer, the waste gas contacts the boost plug. The boost plug is pulled out from the top opening of the filter sleeve under the deformation of the boost spring, the filter sleeve is connected, and the waste gas inside the isothermal box is discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of this scheme; Figure 2 This is the main stereoscopic view of this scheme; Figure 3 This is a schematic diagram of the internal structure of this scheme; Figure 4 Schematic diagram of the structure of the isothermal box of this scheme; Figure 5 This is the main view of this scheme; Figure 6 This is a side view of the scheme; Figure 7 This is a top view of the scheme; Figure 8 for Figure 7 AA section view; Figure 9 for Figure 5 BB partial cross-sectional view; Figure 10 for Figure 8 Part I shows a magnified structural view.

[0014] Among them, 1. Isothermal box, 2. Base, 3. Guide rail frame, 4. Oil-sealed cooling mechanism, 5. Oil supply mechanism, 6. Oil supply box, 7. Oil supply pump, 8. Oil supply pipe, 9. Oil storage cylinder, 10. Isothermal mechanism, 11. Copper sleeve, 12. High-frequency coil, 13. Metal rod, 14. Loading mechanism, 15. Loading slider, 16. Loading net box, 17. Loading spring, 18. Sealing mechanism, 19. Sealing plate, 20. Sealing spring, 21. Limit block, 22. Threaded hole , 23. Bolts, 24. Pressure storage type air filter mechanism, 25. Filter mechanism, 26. Filter sleeve, 27. Oil absorption cotton layer, 28. Activated carbon adsorption layer, 29. Booster mechanism, 30. Booster plug, 31. Booster spring, 32. Inching type oil replenishment mechanism, 33. Measuring mechanism, 34. Measuring frame, 35. Distance measuring sensor, 36. Quantity maintenance mechanism, 37. Oil replenishment tank, 38. Oil replenishment pump, 39. Oil replenishment pipe, 40. Controller, 41. Multi-channel temperature tester.

[0015] The accompanying drawings are used to provide further understanding of the present solution and constitute a part of the specification. Together with the embodiments of the present solution, they are used to explain the present solution and do not constitute a limitation to the present solution. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of this solution will be clearly and completely described below in conjunction with the drawings in the embodiments of this solution. Obviously, the described embodiments are only part of the embodiments of this solution, not all of the embodiments; based on the embodiments in this solution, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this solution.

[0017] In the description of this solution, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this solution and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on this solution.

[0018] like Figures 1-10 As shown, the present invention proposes a ductile iron austempering cooling device, comprising an isothermal box 1, a base 2, a guide rail frame 3, an oil-sealed cooling mechanism 4, a pressure storage type air filter mechanism 24 and an inching type oil replenishing mechanism 32. The base 2 is symmetrically arranged on the bottom wall of the isothermal box 1, and the isothermal box 1 is open at the upper end. The guide rail frames 3 are symmetrically arranged in pairs on the inner walls of both ends of the isothermal box 1. The oil-sealed cooling mechanism 4 includes an oil supply mechanism 5, an isothermal mechanism 10, a loading mechanism 14 and a box sealing mechanism 18. The oil supply mechanism 5 is arranged on both sides of the isothermal box 1, and the isothermal mechanism 10 is arranged on the oil supply mechanism. 5, the loading mechanism 14 is arranged inside the isothermal box 1, the sealing mechanism 18 is arranged at the end of the guide rail frame 3 away from the isothermal box 1, the pressure storage type air filtering mechanism 24 includes a filtering mechanism 25 and a boosting mechanism 29, the filtering mechanism 25 is arranged on the inner wall of the sealing mechanism 18, the boosting mechanism 29 is arranged on the upper wall of the sealing mechanism 18 outside the filtering mechanism 25, the inching type oil replenishing mechanism 32 includes a measuring mechanism 33 and a quantity maintaining mechanism 36, the measuring mechanism 33 is arranged on the upper wall of the sealing mechanism 18 on the side of the boosting mechanism 29, and the quantity maintaining mechanism 36 is arranged on the bottom wall of the isothermal box 1.

[0019] The oil supply mechanism 5 includes an oil supply tank 6, an oil supply pump 7, an oil supply pipe 8 and an oil storage cylinder 9. The oil supply tanks 6 are symmetrically arranged in pairs at the bottom side walls of the two ends of the isothermal box 1. The oil supply pump 7 is arranged inside the oil supply tank 6. The oil supply pipe 8 passes through the oil supply tank 6 and is arranged at the oil suction end of the oil supply pump 7. The oil supply end of the oil supply pump 7 passes through the bottom of the isothermal box 1. The oil storage cylinder 9 is connected to the end of the oil supply pipe 8 away from the oil supply pump 7; the isothermal mechanism 10 includes a copper sleeve 11, a high-frequency coil 12, a metal rod 13 and a multi-channel temperature tester 41. The copper sleeve 11 is arranged on the top wall of the oil storage cylinder 9, the metal rod 13 is arranged on the inner wall of the copper sleeve 11, the high-frequency coil 12 is arranged on the inner wall of the copper sleeve 11 outside the metal rod 13, the multi-channel temperature tester 41 is arranged on the side wall of the isothermal box 1, and the detection ends of the multi-channel temperature tester 41 are respectively connected to the detection ends of the isothermal box 1 and the oil storage cylinder 9. ; The loading mechanism 14 includes a loading slider 15, a loading net box 16 and a loading spring 17. The loading slider 15 is slidably arranged on one end of the guide rail frame 3 close to the isothermal box 1, and the loading net box 16 is arranged between the loading sliders 15. The loading net box 16 is opened at the upper end, and the loading spring 17 is arranged between the loading net box 16 and the bottom wall of the isothermal box 1; the sealing mechanism 18 includes a sealing plate 19, a sealing spring 20, a limit block 21, a threaded hole 22 and a bolt 23. The sealing plate 19 is slidably arranged between the end of the guide rail frame 3 away from the isothermal box 1, the sealing spring 20 is arranged between the sealing plate 19 and the loading slider 15, the limit block 21 is symmetrically arranged on the upper walls of the two ends of the loading net box 16, the threaded holes 22 are symmetrically arranged on both sides of the sealing plate 19 in a group of two, and the bolts 23 are arranged in a group of two and pass through the inner walls of both sides of the isothermal box 1.

[0020] The filtering mechanism 25 includes a filter sleeve 26, an oil-absorbing cotton layer 27 and an activated carbon adsorption layer 28. Multiple groups of the filter sleeves 26 are arranged through the inner wall of the sealing plate 19. The oil-absorbing cotton layer 27 is arranged on the inner wall of the bottom of the filter sleeve 26. The activated carbon adsorption layer 28 is arranged on the inner wall of the filter sleeve 26 above the oil-absorbing cotton layer 27; the boosting mechanism 29 includes a boosting plug 30 and a boosting spring 31. The boosting spring 31 is arranged on the upper wall of the sealing plate 19 outside the filter sleeve 26. The boosting plug 30 is arranged on the side of the boosting spring 31 away from the sealing plate 19. The outer diameter of the end of the boosting plug 30 close to the boosting spring 31 is consistent with the inner diameter of the filter sleeve 26.

[0021] The measuring mechanism 33 includes a measuring frame 34 and a distance sensor 35. Multiple groups of the measuring frames 34 are arranged on the upper wall of the sealing plate 19 between the filter sleeves 26, and the distance sensor 35 is arranged on the bottom wall of the measuring frame 34 above the boost plug 30; the quantity maintenance mechanism 36 includes an oil replenishing tank 37, an oil replenishing pump 38 and an oil replenishing pipe 39. The oil replenishing tank 37 is arranged on the bottom wall of the isothermal box 1, and the oil replenishing pump 38 is symmetrically arranged on both sides of the isothermal box 1. The liquid suction end of the oil replenishing pump 38 is arranged through the inside of the oil replenishing tank 37, and the oil replenishing pipe 39 is connected between the isothermal box 1 and the liquid discharge end of the oil replenishing pump 38.

[0022] A controller 40 is provided on the side wall of the isothermal box 1 on one side of the multi-channel temperature tester 41 .

[0023] The controller 40 is electrically connected to the oil supply pump 7 , the high-frequency coil 12 , the distance sensor 35 , the oil charge pump 38 , and the multi-channel temperature tester 41 .

[0024] This proposal proposes a method for using a ductile iron austempering cooling device, the steps of which are as follows: Step 1: Quenching oil is stored in the oil storage cylinder 9, and the ductile iron after being heated and kept warm is placed in the quenching oil for cooling. The ductile iron is placed in the loading net box 16. The operator presses down the sealing plate 19, and the sealing plate 19 slides down along the guide rail frame 3 by deformation. The sealing plate 19 pushes the loading net box 16 through the limit block 21. The loading net box 16 uses the loading spring 17 to deform and slide along the guide rail frame 3 through the loading slider 15 to enter the isothermal box 1. The sealing plate 19 drives the threaded hole 2 2 is arranged horizontally with the bolt 23. The bolt 23 is screwed into the threaded hole 22, and the sealing plate 19 changes from a movable state to a fixed state. The isothermal box 1 is sealed by the sealing plate 19. At this time, the oil supply pump 7 extracts the quenching oil in the oil reservoir 9 through the oil pumping end. The quenching oil enters the isothermal box 1 through the oil supply pipe 8. As the quenching oil level in the oil reservoir 9 drops, the quenching oil level in the isothermal box 1 rises and immerses the ductile iron workpiece placed in the loading mesh box 16. Step 2: Under the obstruction of the sealing plate 19, the concentration of the exhaust gas generated inside the isothermal box 1 gradually increases, and the pressure inside the isothermal box 1 increases. The exhaust gas is filtered by the oil-absorbing cotton layer 27 and the activated carbon adsorption layer 28 and then contacts the boost plug 30. The boost plug 30 is pulled out from the top opening of the filter sleeve 26 under the deformation of the boost spring 31. The filter sleeve 26 is conductive, and the exhaust gas inside the isothermal box 1 is discharged; Step 3: When the boost plug 30 is lifted by the exhaust gas filtered inside the isothermal box 1, the distance between the boost plug 30 and the ranging end of the ranging sensor 35 is shortened. At this time, the oil replenishment pump 38 draws the quenching oil inside the oil replenishment tank 37 through the liquid pumping end, and the quenching oil inside the oil replenishment tank 37 enters the isothermal box 1 through the oil replenishment pipe 39.

[0025] In specific use, in Example 1, in the initial state, the booster spring 31 is shortened, the loading spring 17 and the sealing spring 20 are extended, and quenching oil is respectively stored in the oil storage cylinder 9 and the oil replenishing tank 37. The upper wall of the loading net box 16 is level with the upper wall of the isothermal box 1, and the sealing plate 19 is located at the end of the guide rail frame 3 away from the isothermal box 1. The opening of the isothermal box 1 is opened, and the ductile iron after heating and heat preservation is placed in the quenching oil for cooling, and the ductile iron is placed in the loading net box 16. The operator Press down the sealing plate 19, which slides down along the guide rail 3 by deformation. The sealing plate 19 pushes the loading net box 16 through the limit block 21. The loading net box 16 slides along the guide rail 3 through the loading slider 15 by the deformation of the loading spring 17 and enters the interior of the isothermal box 1. The sealing plate 19 drives the threaded hole 22 and the bolt 23 to be arranged horizontally. The bolt 23 is rotated and screwed into the threaded hole 22. The sealing plate 19 changes from a movable state to a fixed state, and the isothermal box 1 is sealed by the sealing plate 19. The controller 40 controls the high-frequency coil 12 to be energized. The high-frequency coil 12 heats the metal rod 13 through magnetic induction between the high-frequency coil 12 and the metal rod 13. The metal rod 13 heats the quenching oil inside the oil reservoir 9 through the copper sleeve 11. The multi-channel temperature tester 41 monitors the heating temperature of the quenching oil inside the oil reservoir 9 through the monitoring end. When the quenching oil temperature inside the oil reservoir 9 meets the operator's requirements, the controller 40 controls the oil supply pump 7 on one side of the isothermal box 1 to start. The oil supply pump 7 extracts the quenching oil inside the oil reservoir 9 through the oil pumping end. The quenching oil enters the isothermal box 1 through the oil supply pipe 8. As the quenching oil level inside the oil reservoir 9 drops, the quenching oil level inside the isothermal box 1 rises and immerses the ductile iron workpiece placed inside the loading mesh box 16, thereby performing oil quenching on the ductile iron workpiece. The multi-channel temperature tester 41 monitors the temperature of the quenching oil in the isothermal box 1 in real time through the monitoring end. When the temperature of the quenching oil in the isothermal box 1 is lower than the operator's requirement, the controller 40 controls the oil supply pump 7 on the side of the quenching oil release to start, and the oil supply pump 7 reverses to pump the quenching oil in the isothermal box 1 back into the oil storage cylinder 9. At the same time, the controller 40 controls the oil supply pump 7 on the other side of the isothermal box 1 to start, and the oil supply pump 7 transports the quenching oil in the oil storage cylinder 9 into the isothermal box 1 through the oil pumping end, thereby maintaining the oil quenching temperature in the isothermal box 1. Embodiment 2: This embodiment is based on the above embodiment. When the ductile iron workpiece is immersed in quenching oil, the quenching oil will evaporate and volatilize due to the high temperature, generating corresponding steam and organic waste gas. The steam and organic waste gas inside the isothermal box 1 are retained inside it under the obstruction of the sealing plate 19. As the exhaust gas concentration gradually increases, the pressure inside the isothermal box 1 increases. The exhaust gas is filtered by the oil-absorbing cotton layer 27 and the activated carbon adsorption layer 28 and then contacts the boost plug 30. The elasticity of the boost spring 31 is used to increase the pressure inside the filter sleeve 26. The contact opportunities between the exhaust gas molecules and the surface of the activated carbon adsorption layer 28 are increased, thereby improving its adsorption efficiency for the exhaust gas. The boost plug 30 is pushed out of the top opening of the filter sleeve 26 under the deformation of the boost spring 31, the filter sleeve 26 is connected, and the exhaust gas inside the isothermal box 1 is discharged; Example three, this example is based on the above example, when ductile iron is heated to the austenitizing temperature and immersed in quenching oil, under high temperature, the quenching oil will evaporate and volatilize due to the high temperature, resulting in a reduction in the amount of quenching oil inside the isothermal box 1, and the isothermal box 1 is automatically replenished with oil according to the amount of steam and exhaust gas generated by the quenching oil. When the boost plug 30 is lifted by the exhaust gas filtered inside the isothermal box 1, the controller 40 controls the distance sensor 35 to start, and the distance between the boost plug 30 and the distance measuring end of the distance sensor 35 is shortened. At this time, the controller 40 controls the oil replenishment pump 38 to start, and the oil replenishment pump 38 draws the quenching oil inside the oil replenishment tank 37 through the pumping end. The quenching oil inside the oil replenishment tank 37 enters the isothermal box 1 through the oil replenishment pipe 39, stabilizes the temperature of the quenching oil inside the isothermal box 1, and maintains the appropriate cooling capacity of the quenching oil; repeat the above operation when using it next time.

[0026] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0027] The above description of the present solution and its implementation methods is non-limiting. The drawings show only one implementation method of the present solution, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present solution, designs a similar structure and embodiment without creatively designing, they shall fall within the scope of protection of the present solution.

Claims

1. A ductile iron austempering cooling device, comprising an isothermal chamber, a base and a guide rail frame, characterized in that: It also includes an oil-sealed cooling mechanism, a pressure-storage air filter mechanism, and an inching oil-replenishing mechanism. The base is symmetrically arranged on the bottom wall of the isothermal box, which is open at the top. The guide rails are symmetrically arranged in pairs on the inner walls of both ends of the isothermal box. The oil-sealed cooling mechanism includes an oil supply mechanism, an isothermal mechanism, a material loading mechanism and a box sealing mechanism; The oil supply mechanism is arranged on both sides of the isothermal box, the isothermal mechanism is arranged on the oil supply mechanism, the material loading mechanism is arranged inside the isothermal box, and the box sealing mechanism is arranged at one end of the guide rail frame away from the isothermal box; The pressure storage type air filtering mechanism includes a filtering mechanism and a pressurizing mechanism; The filtering mechanism is arranged on the inner wall of the box sealing mechanism, and the pressurizing mechanism is arranged on the upper wall of the box sealing mechanism outside the filtering mechanism; The inching type oil replenishing mechanism includes a motion measuring mechanism and a quantity maintaining mechanism; The motion measuring mechanism is arranged on the upper wall of the box sealing mechanism on one side of the pressurizing mechanism, and the quantity maintaining mechanism is arranged on the bottom wall of the isothermal box; The sealing mechanism includes a sealing plate, threaded holes and bolts; The sealing plate is slidably arranged between the ends of the guide rail frame away from the isothermal box, the threaded holes are symmetrically arranged in groups of two on both sides of the sealing plate, and the bolts are arranged in groups of two through the inner walls of both sides of the isothermal box; The filtering mechanism includes a filter sleeve; Multiple groups of filter sleeves are arranged through the inner wall of the sealing plate; The boost mechanism includes a boost plug and a boost spring; The boost spring is arranged on the upper wall of the sealing plate outside the filter sleeve, and the boost plug is arranged on the side of the boost spring away from the sealing plate. The outer diameter of the end of the boost plug close to the boost spring is consistent with the inner diameter of the filter sleeve. The motion measuring mechanism includes a motion measuring frame and a distance measuring sensor; A plurality of groups of the measuring frames are arranged on the upper wall of the sealing plate between the filter sleeves, and the distance measuring sensor is arranged on the bottom wall of the measuring frame above the boost plug.

2. The ductile iron austempering cooling equipment according to claim 1, characterized in that: The oil supply mechanism includes an oil supply tank, an oil supply pump, an oil supply pipe and an oil storage cylinder. The oil supply tanks are symmetrically arranged in pairs on the bottom side walls of the isothermal box at both ends. The oil supply pump is arranged inside the oil supply tank. The oil supply pipe passes through the oil supply tank and is arranged at the oil suction end of the oil supply pump. The oil supply end of the oil supply pump passes through the bottom of the isothermal box. The oil storage cylinder is connected to the end of the oil supply pipe away from the oil supply pump.

3. The ductile iron austempering cooling equipment according to claim 2, characterized in that: The isothermal mechanism includes a copper sleeve, a high-frequency coil, a metal rod and a multi-channel temperature tester. The copper sleeve is arranged on the top wall of the oil storage cylinder, the metal rod is arranged on the inner wall of the copper sleeve, the high-frequency coil is arranged on the inner wall of the copper sleeve outside the metal rod, and the multi-channel temperature tester is arranged on the side wall of the isothermal box. The detection ends of the multi-channel temperature tester are respectively arranged through the inside of the isothermal box and the oil storage cylinder.

4. The ductile iron austempering cooling equipment according to claim 2, characterized in that: The loading mechanism includes a loading slider, a loading net box and a loading spring. The loading slider is slidably arranged on one end of the guide rail frame close to the isothermal box. The loading net box is arranged between the loading sliders. The loading net box is opened at the upper end. The loading spring is arranged between the loading net box and the bottom wall of the isothermal box.

5. The ductile iron austempering cooling equipment according to claim 4, characterized in that: The box sealing mechanism also includes a box sealing spring and a limit block. The box sealing spring is arranged between the box sealing plate and the loading slider, and the limit block is symmetrically arranged on the upper walls of both ends of the loading net box.

6. The ductile iron austempering cooling equipment according to claim 4, characterized in that: The filtering mechanism further comprises an oil-absorbing cotton layer and an activated carbon adsorption layer. The oil-absorbing cotton layer is arranged on the bottom inner wall of the filter sleeve, and the activated carbon adsorption layer is arranged on the inner wall of the filter sleeve above the oil-absorbing cotton layer.

7. The ductile iron austempering cooling equipment according to claim 6, characterized in that: The quantity maintenance mechanism includes an oil replenishing tank, an oil replenishing pump and an oil replenishing pipe. The oil replenishing tank is arranged on the bottom wall of the isothermal box, the oil replenishing pump is symmetrically arranged on both sides of the isothermal box, the oil replenishing pump suction end is arranged through the inside of the oil replenishing tank, and the oil replenishing pipe is connected between the isothermal box and the oil replenishing pump discharge end.

8. The method for using the ductile iron austempering cooling device according to claim 7, characterized in that: Step 1: The sealing plate changes from a movable state to a fixed state, and the isothermal box is sealed by the sealing plate. At this time, the oil supply pump extracts the quenching oil inside the oil reservoir through the oil pumping end, and the quenching oil enters the isothermal box through the oil supply pipe. As the quenching oil level in the oil reservoir drops, the quenching oil level in the isothermal box rises and immerses the ductile iron workpiece placed in the loading mesh box; Step 2: The pressure inside the isothermal box increases, and the exhaust gas is filtered by the oil-absorbing cotton layer and the activated carbon adsorption layer and then contacts the boost plug. The boost plug is pulled out from the top opening of the filter sleeve under the deformation of the boost spring, and the filter sleeve is connected, and the exhaust gas inside the isothermal box is discharged; Step 3: The distance between the boost plug and the distance measuring end of the distance measuring sensor is shortened. At this time, the oil replenishment pump extracts the quenching oil inside the oil replenishment tank through the liquid pumping end, and the quenching oil inside the oil replenishment tank enters the isothermal box through the oil replenishment pipe.

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