CN212983003U - Automatic spray quenching production line for heat treatment of large thin-wall cylinder - Google Patents
Automatic spray quenching production line for heat treatment of large thin-wall cylinder Download PDFInfo
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- CN212983003U CN212983003U CN202021231939.6U CN202021231939U CN212983003U CN 212983003 U CN212983003 U CN 212983003U CN 202021231939 U CN202021231939 U CN 202021231939U CN 212983003 U CN212983003 U CN 212983003U
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Abstract
本实用新型提供了一种大型薄壁筒体热处理自动喷淬生产线，包括：在地上依次排布的用于工件等待处理或转移的装卸料台、用于工件淬火前加热的室式淬火炉、用于工件淬火冷却的升降式淬火喷淬机床、用于工件回火加热的室式回火加热炉，以及可在所述装卸料台、室式淬火炉、升降式淬火喷淬机床、室式回火加热炉这四个设备间自由行走串联各设备的装取料机。本实用新型采用室式炉加热，炉内配备先进的加热和循环系统，特制的专用喷淬系统可根据工件调节高度以及通过调节水流压力能够实现一定范围内不同直径薄壁筒体的淬火需求，装取料机工位间自动移动装取料，能够实现90秒内的淬火转移时间，满足生产需求。
The utility model provides an automatic spray quenching production line for heat treatment of a large-scale thin-walled cylinder, comprising: a loading and unloading table for workpieces to be processed or transferred in sequence on the ground, a chamber-type quenching furnace for heating the workpieces before quenching, The lifting type quenching and spraying machine tool for quenching and cooling the workpiece, the chamber type tempering heating furnace for the workpiece tempering heating, and the loading and unloading table, the chamber type quenching furnace, the lifting type quenching and spraying The four equipments of the tempering furnace are free-running and series-connected charging and reclaiming machines. The utility model adopts a chamber furnace for heating, and the furnace is equipped with an advanced heating and circulation system. The specially-made special spray quenching system can adjust the height according to the workpiece and can meet the quenching requirements of thin-walled cylinders with different diameters within a certain range by adjusting the water flow pressure. The loading and unloading machine automatically moves the loading and unloading between the stations, which can realize the quenching transfer time within 90 seconds and meet the production needs.
Description
Technical Field
The utility model belongs to the technical field of the automatic thermal treatment production of large-scale thin wall barrel class part is equipped, especially, relate to an automatic production line that quenches that spouts of large-scale thin wall barrel thermal treatment.
Background
Along with the rapid development of economy in recent years, the demands for ultra-large-size thin-wall annular and cylindrical parts and other limit parts, particularly thin-wall cylindrical parts with high quality requirements, in the fields of maritime work equipment, aerospace and the like are more and more extensive. The integral heat treatment of the thin-wall cylindrical part is a necessary means for maintaining the shape and the size of the rolled part and improving the performance, and the traditional heat treatment equipment cannot meet the requirements of heat treatment of high quality and less deformation.
For example, the traditional thin-wall cylindrical part method adopts a pit furnace and an immersion quenching tank for treatment. The workpiece is supported or hung in the bottom of the furnace, a hanger is hung manually when the workpiece is discharged, and the workpiece is transferred by a workshop to drive. When the diameter of the cylindrical part is larger and the wall is thin, the problems which are difficult to solve by the shaft furnace are existed; 1. the workpiece is difficult to place in the large-diameter hearth, the opening time of the furnace cover is prolonged, the quenching transfer time is influenced, potential safety hazards exist, the hanging difficulty of the workpiece is increased, and the reliability is reduced. Meanwhile, in order to meet the requirement of transfer time of quenching, the steel plate needs to be quickly transferred to a quenching station from the furnace; the specified requirement of quenching transfer time measured in seconds is difficult to meet by a large amount of manual work and workshop crane for hoisting and transferring large-size workpieces.
The existing large-scale cylinder quenching is generally immersion quenching, and the quenching deformation control of the thin-wall cylindrical part is difficult to control due to the problems that the quenching intensity of a quenching tank is difficult to control, a steam film of a large-tonnage workpiece is difficult to break and the like.
Therefore, in order to overcome the defects, the utility model designs a special automatic spray quenching heat treatment production line for heat treatment of the large-scale thin-wall cylinder according to the characteristics and the technical requirements of the large-size limit thin-wall cylinder and the requirements of the heat treatment process.
SUMMERY OF THE UTILITY MODEL
Based on the deficiency of the prior art, the utility model provides a technical problem who solves provides the thermal treatment of satisfying limit thin wall barrel and spouts the quenching production line that accuse temperature is accurate, work piece transfer time is short, degree of automation is high.
In order to achieve the purpose, the utility model is realized by the following technical scheme: automatic production line that quenches of spouting of large-scale thin wall barrel thermal treatment includes:
a loading and unloading platform which is arranged on the ground in sequence and used for waiting for processing or transferring the workpiece, a chamber type quenching furnace used for heating the workpiece before quenching, a lifting type quenching spray quenching machine tool used for quenching and cooling the workpiece, a chamber type tempering heating furnace used for tempering and heating the workpiece, an
The loading and unloading machine can freely walk among the four devices, namely the loading and unloading platform, the chamber type quenching furnace, the lifting quenching spray quenching machine tool and the chamber type tempering heating furnace, and is connected with the devices in series.
Optionally, the loading and unloading platform is composed of a concrete bearing foundation, a refractory castable and a plurality of rows of profile steel supporting material piers fixed on the concrete bearing foundation, and the profile steel supporting material piers are spliced in multiple sections and are in an I shape.
Optionally, the lifting quenching spray quenching machine tool includes:
the rotary spraying and quenching system is arranged around the inner side and the outer side of the cylindrical workpiece and is used for uniformly spraying water to the inner side and the outer side of the workpiece to quickly cool the surface of the workpiece;
the hydraulic jacking platform is used for supporting the rotary spray quenching system, adjusting the height of the rotary spray quenching system and simultaneously enabling the rotary spray quenching system to rotate around the rotary spray quenching system in the spray quenching process;
the box-type frame supporting and guiding device is arranged outside the hydraulic jacking platform and used for fixing and supporting the hydraulic jacking platform and guiding the hydraulic jacking platform to vertically lift;
and the water supply and drainage system is used for supplying water to the rotary spray quenching system in the workpiece spray quenching process and simultaneously realizing pressure detection and backwater collection in the spray quenching process.
Furthermore, the hydraulic jacking platform comprises an annular frame platform, a hydraulic driving system and a guide wheel device,
the upper part of the annular frame platform is provided with an annular supporting guide rail for supporting the rotary spray quenching system, and the guide wheel devices are uniformly arranged on the outer side of the circumference of the annular frame platform;
the hydraulic driving system comprises a hydraulic cylinder support and a hydraulic cylinder which are fixed on the concrete embedded part, and the hydraulic cylinder is connected with the annular frame platform in a hinged mode and used for vertically driving the annular frame platform to lift.
Furthermore, the rotary spray quenching system comprises an annular supporting frame, a spray quenching system and a rotary driving device, wherein the annular supporting frame is formed by combining and welding square steel and section steel and is used for supporting and fixing the spray quenching system;
the spray quenching system comprises a water inlet main pipe, branch pipes, a plurality of adjustable spray heads and a plurality of electric adjusting valves, wherein the branch pipes are uniformly distributed in the annular supporting frame, the plurality of adjustable spray heads are uniformly arranged on one side opposite to the branch pipes, and the electric adjusting valves are also arranged on the branch pipes provided with the adjustable spray heads;
the rotary driving device comprises a supporting wheel set, electro-hydraulic push cylinders and supports thereof, wherein the supporting wheel set is arranged at the bottom of the annular supporting frame and is uniformly distributed along the circumference, and the supporting wheel set is arranged on the annular supporting guide rail;
the electro-hydraulic push cylinder and the support thereof are arranged on the annular frame platform, and the push head of the electro-hydraulic push cylinder is connected with the annular support frame and used for pushing and pulling the annular support frame to realize rotary reciprocating motion.
Further, the box-type frame supporting and guiding device comprises a box-type frame and a guiding device,
the box-type frame is formed by combining and welding four box-type columns and box-type beams connected among the columns and is arranged on the concrete foundation embedded part; the guide device is a guide rail formed by welding profile steels, is integrally concave and is used for being matched with a guide wheel device of the hydraulic jacking platform.
Optionally, the chamber tempering furnace includes a furnace body composed of a furnace shell and a furnace lining, and further includes:
the combustion system is provided with burners arranged along two sides of the top of the furnace body and used for spraying flame downwards to heat the furnace body and raise the temperature;
the circulating flow guide system is provided with a flow guide box body arranged in the furnace body and a circulating fan positioned on the flow guide box body, and is combined with the combustion system to carry out precision control on the temperature in the furnace body;
the smoke exhaust system consists of a smoke exhaust draught fan and a smoke exhaust pipeline and is used for exhausting smoke and cooling the furnace body.
Furthermore, the combustion system comprises a combustion-supporting fan arranged at the top of the furnace body, the combustion-supporting fan is connected with the burner and used for adjusting the air quantity of the combustion-supporting air according to requirements and simultaneously mixing cold air in the smoke discharging process.
The combustion system also comprises a preheater arranged at the lower part of the rear side of the furnace body and a corresponding pipeline.
By last, the utility model discloses an automatic production line that quenches that spouts of large-scale thin wall barrel thermal treatment possesses following beneficial effect at least:
the chamber furnace is adopted for heating, an advanced heating and circulating system is arranged in the furnace, a specially-made special spray quenching system can meet the quenching requirement of thin-wall cylinders with different diameters within a certain range according to the height of a workpiece and by adjusting the water flow pressure, materials are automatically moved between stations of a loading and taking machine, the quenching transfer time within 90 seconds can be achieved, and the production requirement is met.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic perspective view of the lifting quenching and spray quenching machine tool shown in FIG. 1 according to the present invention;
fig. 3 is a schematic structural view of the hydraulic jacking platform shown in fig. 2 according to the present invention;
FIG. 4 is a schematic structural view of the rotary quenching system of FIG. 2 according to the present invention;
FIG. 5 is a schematic diagram of the spray quenching system of FIG. 4 according to the present invention;
FIG. 6 is a schematic view of the box frame support and guide apparatus of FIG. 2 according to the present invention;
fig. 7 is a top view of the present invention shown in fig. 6;
FIG. 8 is a schematic view of the water supply and drainage system of FIG. 2 according to the present invention;
FIG. 9 is a schematic perspective view of the chamber tempering furnace of FIG. 1 according to the present invention;
fig. 10 is a front view of fig. 9 in accordance with the present invention;
fig. 11 is a side view of the present invention in fig. 9;
fig. 12 is a top view of the present invention in fig. 9;
fig. 13 is a cross-sectional view taken along line B-B of fig. 10 in accordance with the present invention;
fig. 14 is a schematic structural view of a diversion box body and a circulating fan of the circulation diversion system of fig. 9 according to the present invention;
fig. 15 is a schematic structural view of the material loading and unloading machine shown in fig. 1 according to the present invention.
Detailed Description
The following describes in detail the specific embodiment of the automatic spray quenching production line for heat treatment of large thin-wall cylinder according to the present invention with reference to the attached fig. 1-15.
As shown in fig. 1, the automatic spray quenching production line for heat treatment of large-sized thin-walled cylinders comprises a loading and unloading platform 1, a chamber quenching furnace 2, a lifting quenching spray quenching machine tool 3, a chamber tempering heating furnace 4 and a centralized control system, wherein the centralized control system comprises a hydraulic system, an electrical system and other parts, and the movement of each moving part is realized according to the process action requirements. The equipment is arranged on the ground in sequence, and the loading and unloading machine 5 can freely walk among the four equipment (stations) to be connected with the equipment in series. The workpiece to be processed waits for processing or transferring on the loading and unloading platform 1, the transferring is completed among all stations through the loading and unloading machine 5, the chamber type quenching furnace 2 is used for heating before quenching, then the quenching and cooling are completed on the lifting type quenching spray quenching machine 3, and the chamber type tempering heating furnace 4 is used for tempering and heating.
As shown in figure 1, the loading and unloading platform 1 of the utility model is composed of a concrete bearing foundation, refractory castable and a plurality of rows of steel supporting material piers 11 fixed on the concrete bearing foundation. The upper surface of the loading and unloading platform 1 is flush with the upper surfaces of supporting material piers of the chamber type quenching furnace 2 and the chamber type tempering heating furnace 4. The profile steel supporting material pier 11 adopts a multi-section splicing type and is in an I shape, and meanwhile, a plurality of groups of positioning grooves can be arranged for positioning the workpieces to be processed or transferred according to different diameters of the workpieces. The shaped steel support material pier 11 is installed on refractory castable and concrete bearing basis, matches many specifications gasket and adjusts whole levelness, guarantees that the whole levelness of holding surface reaches within 3mm, and the work piece is laid steadily.
As shown in fig. 2, the lifting quenching spray quenching machine tool 3 of the present invention includes a hydraulic jacking platform 31, a rotary spray quenching system 32, a box-type frame supporting and guiding device 33, and a water supply and drainage system 34.
As shown in fig. 3, the hydraulic jacking platform 31 of the present invention is composed of a hydraulic driving system 311, a ring frame platform 312 and a guide wheel device 313. The hydraulic driving system 311 is composed of four stroke fast hydraulic cylinders, a support seat, a hydraulic station and a hydraulic pipeline. The hydraulic cylinder support is fixed on a refractory castable and concrete bearing foundation, and the hydraulic cylinder is connected with the annular frame platform 312 in a hinged mode and vertically drives the annular frame platform 312 to lift. The annular frame platform 312 is formed by welding square steel and section steel in a combined manner, so that sufficient rigidity is ensured, and the bearing is stable and reliable. An annular support rail 314 is mounted above the annular frame platform 312 for supporting the rotary quench system 32. The guide wheel devices 313 are welded at four corners of the outer circumference of the annular frame platform 312 and matched with the guide devices 332 of the box-type frame supporting and guiding device 33, so that the vertical lifting guiding function is achieved, and the function of preventing the jacking platform from rotating is also achieved.
As shown in fig. 4-7, the rotary quenching system 32 of the present invention includes an annular supporting frame 321, a quenching system 322, and a rotary driving device 323. The annular supporting frame 321 is formed by welding square steel and section steel in a combined manner, is used for supporting and fixing the spray quenching system 322, and ensures sufficient rigidity and stable and reliable bearing through optimized design. The rotary spray quenching system 32 sprays cooling water to the surface of the workpiece through an adjustable spray head to perform quenching cooling. The spray quenching system 322 is composed of a water inlet main pipe 3221, branch pipes 3222 uniformly distributed in all areas around the circumference, adjustable spray heads 3223, an electric adjusting valve, a diameter-changing device, a pressure detection device and a water temperature detection device. The spray quenching system 322 is controlled in a subarea manner, and can adjust different spray quenching water amounts and pressures according to different parts of a workpiece, so that the quenching intensity can be automatically adjusted at different positions and different time periods. The branch pipe 3222 adopts a structure of a ring pipe and a vertical pipe, an adjustable spray head 3223 and an electric adjusting valve are arranged on the vertical pipe, automatic adjustment is carried out according to process requirements so as to control the water spraying pressure and flow, a reducing device refers to a joint for connecting pipelines with different diameters, and a standard part is selected according to requirements; the pressure detection device is a Siemens pressure sensor and is arranged on the water inlet main pipe and the branch pipe; the water temperature detection device is a water temperature sensor and is arranged on the water inlet pipeline and the water return pipeline to detect the water supply temperature and the water return temperature in real time, and the opening of the electric control valve is controlled by the real-time feedback of the pressure detection device and the water temperature monitoring device, so that the pressure and the flow of each area are accurately adjusted in real time, and the customized quenching cooling effect is achieved. The spray quenching system 322 is driven by the rotary driving device 323 to spray and quench along the workpiece in a rotating way, so that the surface of the workpiece is cooled rapidly. The rotary drive 323 is composed of a support wheel set 3231 and an electro-hydraulic ram and its support 3232. The support wheel sets 3231 are installed at the bottom of the annular support frame 321, and are uniformly distributed along the circumference, and the support wheel sets 3231 are placed on the annular support guide rail 314. The electro-hydraulic push cylinder and a support 3232 thereof are arranged on the hydraulic lifting platform 1, the push head of the electro-hydraulic push cylinder is connected with the annular support frame 321, and the annular support frame 321 is pushed and pulled to realize rotary reciprocating motion. Specifically, the outer side of the rotary spray quenching system 3 is also provided with a protective cover 6.
As shown in fig. 6 and 7, the box-type frame supporting and guiding device 33 of the present invention includes a box-type frame 331 and a guiding device 332. The box-type frame 331 is formed by welding four box-type columns and box-type beams connected among the columns in a combined manner, and is installed on a refractory castable and concrete bearing foundation. The box column and the box beam are formed by welding and combining profile steels, so that the overall strength and rigidity of the box column and the box beam are ensured, and the hydraulic jacking platform 31 is effectively fixed and supported. The guide device 332 is a guide rail formed by welding profile steels, is integrally concave, and is used for being matched with a guide wheel device 313 limited in the guide rail to roll and effectively matched with the guide wheel device 313 for supporting the hydraulic jacking platform 31.
As shown in fig. 2, fig. 6 and fig. 8, the water supply and drainage system 34 of the present invention is composed of a water collecting tank 341, a water supply main pipe 342, a water return pipe and a liquid level measuring device. The water collecting tank 341 is divided into two parts, one part is arranged below the spray quenching system 322, and the other part is underground in front of the spray quenching system 322. The two parts are communicated and used for collecting water flow sprayed by the spray quenching system 322 and collecting the water flow by a water return pipeline. The main water supply pipeline 342 is divided into four paths to supply the spray quenching system 322, the part of the main water supply pipeline positioned outside the box-type frame 331 is a hose and can rotate along with the rotary spray quenching system 32, four three-way automatic reversing valves are arranged at the joint of the main water supply pipeline, the joint before quenching is closed, and when spray quenching is needed, the automatic reversing is carried out to the passage to provide a water source. The return water pipeline is divided into two paths to absorb water from the water collecting tank 341, the water flows through the return water pump after passing through the filter and the valve and is forcibly discharged to a return water contact, and a check valve is arranged on the pipeline behind the pump to prevent the backflow phenomenon. The liquid level measurement device is installed in catch basin 341 side bottom, and real-time supervision catch basin 341 liquid level can be set for according to the liquid level and come the automatic drain pump that stops, and is specific, and the liquid level measurement device is the level gauge.
The lifting quenching spray quenching machine tool adopts an advanced spray quenching system, lifting equipment and an improved supporting method, and can realize the adaptation of the diameter of a thin-wall cylinder in the range of 9-16 m; the control and adjustment of the wall thickness of 0.006 m-0.15 m are realized; meets the requirement of cooling speed not less than 70 ℃/m. Can be used for quenching process of heat treatment after pricking in the fields of aerospace and military industry.
When the lifting quenching spray quenching machine tool is used, the annular frame platform 312 is driven by the hydraulic drive system 311 to ascend to the top along the box-shaped frame 331, so that a sufficient space is reserved for workpiece transportation. The material fork moves the thin-walled cylinder after quenching and heating to the workpiece support frame 35, and the hydraulic drive system 311 drives the annular frame platform 312 to vertically descend to the rotary spray quenching system 32 to reach a preset position. The electric adjusting valve is opened, the opening degree is adjusted according to the process requirements, and the adjustable spray head uniformly sprays water to the inner side and the outer side of the workpiece for cooling. The pressure detection device monitors the pressure condition of each waterway in real time, and adjusts the opening of the electric regulating valve according to the set pressure flow value to form closed-loop control and accurately adjust the pressure and the flow of each area in real time. Meanwhile, the rotary driving device 323 drives the annular supporting frame 321 to rotate and reciprocate, so that the spraying and quenching processes of all parts of the workpiece are uniform and consistent, and the influence of stagnation points is reduced. In the quenching process, a water supply main pipeline 342 provides a water source, high-temperature cooling water flowing through the surface of the workpiece flows back to the water collecting tank 341, and a water return pipeline pumps water from the water collecting tank 341 and flows to a water return joint. After the workpiece is cooled, the hydraulic driving system 311 drives the annular frame platform 312 to ascend, and the material fork conveys the quenched workpiece away from the machine tool.
As shown in fig. 9 to 14, the chamber tempering furnace 4 of the present invention includes a furnace shell 41, a furnace lining 42, a furnace door lifting device 43, a combustion system 44, a circulation flow guiding system 45, a smoke discharging system 46, a speed control cooling system and a furnace bottom supporting device 47. Wherein, stove outer covering 41 and furnace lining 42 constitute furnace body structure, and stove outer covering 41 is welded into box structure by steel sheet and shaped steel combination, and the steel sheet adopts seal welding, and shaped steel strengthens as fossil fragments, optimizes through the modeling simulation, and is firm reliable. The furnace lining 42 is attached to the inner wall of the furnace shell 41 and is formed by compounding refractory fibers and refractory bricks, and the furnace lining positioned on the furnace wall and the furnace top is formed by combining a high-purity refractory fiber module and a lining blanket; the furnace lining at the bottom of the furnace is built by refractory bricks with various specifications.
The utility model provides a stove bottom strutting arrangement 47 comprises pouring material prefabricated section and heat-resisting steel base, and the pouring material prefabricated section is in the ring belt area of work piece size range, and rectangular array is covered with, guarantees the weight of sufficient intensity bearing work piece and heat-resisting steel base, and has good heat stability of shaking, guarantees long-term the use. The heat-resistant steel base is divided into a plurality of sections and is arranged on the castable precast block, enough gaps are reserved between the sections to offset the influence of thermal expansion, and the planeness after the integral installation is controlled within +/-3 mm.
The utility model provides a furnace gate elevating gear 43 includes furnace gate frame, furnace gate elevating system, and the furnace gate is built by laying bricks or stones by steel construction, heat-resisting cast iron frame and high-purity refractory fiber and is constituteed. The steel structure of the furnace door is formed by welding a square steel pipe and a steel plate, the structural design of each part of the outer frame fully considers the problem of thermal deformation of the frame, and the overall rigidity of the frame is ensured. The heat-resistant cast iron frame is arranged around the furnace door and is designed into a multi-block splicing type. The furnace door frame is formed by welding and combining profile steels, and the furnace door frame is provided with an overhaul platform and a fireproof heat insulation plate. The furnace door lifting mechanism is composed of a speed reducing motor with a brake, a chain wheel, a bearing and the like, and the furnace door is tightly sealed when being closed. The gear motor is installed on one side of the furnace body, and the motor rotates to drive the chain to rotate through the chain wheel so as to realize the lifting of the furnace door. The furnace door lifting mechanism can adopt the prior common structure, and the description is omitted here.
As shown in fig. 9, the utility model discloses a combustion system 44 comprises nozzle, pre-heater, combustion fan and pipeline, and the nozzle adopts multistage burning nozzle, and the furnace body top is respectively arranged the nozzle along both sides and is many, and the nozzle is installed perpendicularly to be furnished with purpose-built and protect a chimney, the downward blowout heating of flame. According to the low-temperature characteristic of the tempering furnace, the burner control adopts continuous proportion adjustment and on/off pulse control, so that the heating and heat preservation of the furnace body are efficient and stable, and the burner control is matched with the circulating flow guide system 45 to ensure the uniformity requirement of the furnace temperature. The preheater is a high-efficiency tubular preheater and is arranged at the lower part of a furnace back wall (the rear side of the furnace body). The combustion-supporting fan adopts a high-flow high-pressure variable-frequency centrifugal fan which is arranged at the top of the furnace body, can adjust the air quantity according to the requirement, and ensures that cold air is mixed in the smoke discharging process while the supply of the combustion-supporting air is ensured. The pipeline includes gas pipeline and combustion-supporting air pipeline, and the gas pipeline uses seamless steel pipe, and manual ball valve, gas solenoid valve, filter, flowmeter, decompression surge damping valve, safe valve and high-low pressure switch alarm and pressure display are joined in marriage to the gas main line, and the gas branch pipe way (preceding) is furnished with slowly opening fast closing solenoid valve, manual linear regulating valve, assurance security and reliability. The combustion-supporting air pipeline uses a spiral welded pipe and is provided with a pulse electromagnetic butterfly valve and a manual adjusting butterfly valve.
As shown in fig. 13 and 14, the circulation diversion system 45 of the present invention is composed of an air-cooled centrifugal circulation fan 451 and a heat-resistant steel diversion box 452, and a set of fan and diversion box 452 is provided for each zone. The circulation fan 451 is arranged annularly above the furnace ceiling in accordance with the shape of the workpiece. The flow guide box body 452 is of a C-shaped structure, the circulating fan 451 (extending out of the furnace top) is arranged on the upper portion of the flow guide box body, the vertical portion of the flow guide box body is arranged in the furnace body, the bottom of the flow guide box body is paved to the position of the half width of the furnace body, the bottom of the flow guide box body 452 is provided with the plurality of air injection nozzles 453, the air injection nozzles 453 upwards inject heat flow out, high-speed jet heating is achieved, the bottom nozzles can achieve hot air injection in a jet mode, and heat. Two opposite flow guide box bodies 452 are arranged in each transverse area, the flow guide box bodies 452 arranged oppositely in a double-C shape reduce pressure loss in the circulation process, the power of the needed fan is reduced by using double fans (the volume of the fan is also reduced), and meanwhile, the two fans arranged in an isolated mode can avoid mutual interference of the top fans. The hot air circulation is supplied by a fan, the hot air flows through the nozzles to be heated, then is sprayed out from the air nozzles at the bottom of the box body, flows through the workpiece and then is sent into the air suction port at the top of the furnace to form circulation, each box body is of an independent structure, the mutual interference of the hot air in each area is avoided, and the high-precision control of the furnace temperature is realized.
In addition, the smoke exhaust system 46 is composed of a high-temperature smoke exhaust induced draft fan and a smoke exhaust pipeline, and a smoke exhaust port is arranged at the lower part of the furnace rear wall (the rear side of the furnace body). The smoke exhaust draught fan is a high-flow high-pressure variable-frequency draught fan, and the blades and the fan shaft are made of heat-resistant steel materials, so that the air quantity can be adjusted according to requirements. The smoke exhaust draught fan is arranged on a smoke exhaust pipeline at the rear part of the furnace body and used for forming negative pressure to extract smoke in the furnace.
The utility model discloses a combustion system 44 constitutes accuse quick cooling system with the cooperation of system 46 of discharging fume, when the cooling of the fast cooling of needs accuse, and combustion fan among the control combustion system 44 lets in cold air to the stove in, flows through and discharges from the exhaust port behind the furnace, and the draught fan of discharging fume this moment also participates in work, realizes the fast cooling function of work piece accuse.
From above, the utility model provides a technical scheme can see out, adopts the room formula stove form, is furnished with combustion system 44, circulation water conservancy diversion system 45, exhaust system 46, the fast cooling system of accuse, can accomplish the high accuracy tempering process requirement of diameter 9-16m barrel work piece.
The chamber type quenching furnace 2 of the utility model has the same structure with the chamber type tempering heating furnace 4, and is not repeated herein.
As shown in fig. 15, the loading and unloading machine 5 of the present invention includes a cart and traveling mechanism 51, a cart traveling mechanism 52, a material fork and lifting mechanism 53, a hydraulic system 54, and an electrical control system. The cart traveling mechanism is driven by a hydraulic motor, and the cart body travels left and right through the transmission of a chain wheel, a chain and a rack. The trolley travelling mechanism 52 is driven by a hydraulic motor, and the front and back travelling of the trolley is realized through the transmission of a chain wheel, a chain and a rack. The material fork of the material fork and lifting mechanism 53 is composed of a plurality of fork handles which are respectively arranged on the movable mounting plate 531, a single material fork is of a welded structure and is convenient to replace, and the lifting mechanism of the material fork and lifting mechanism 53 comprises a guide bracket 532, a lifting guide post 533, a guide wheel 534 and a lifting oil cylinder. The hydraulic system 54 is driven by a motor to drive a hydraulic pump, and pressure oil reaches a proportional directional valve to control walking and lifting. The actuators are controlled by manual operation or semi-automatic operation of a driver. The lifting pipeline is connected in series with a hydraulic lock and is also provided with an energy accumulator to keep the pressure stable and play a role of buffering, an overflow valve attached to the reversing valve is used as a safety valve, and the set system pressure is less than or equal to 31.5 Mpa. The transfer of the ultra-large diameter thin-wall cylinder between each station is realized.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope of the claims.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111690798A (en) * | 2020-06-29 | 2020-09-22 | 北京机电研究所有限公司 | Large-scale thin-wall cylinder lifting type spray quenching machine tool |
| CN115747446A (en) * | 2022-10-08 | 2023-03-07 | 中国机械总院集团北京机电研究所有限公司 | Be used for handling large-scale thin wall head aluminum component shape nature and regulate and control heat treatment device in coordination |
| CN117758037A (en) * | 2023-12-26 | 2024-03-26 | 江苏省埃迪机电设备实业有限公司 | Intelligent heat treatment equipment and method for corrugated pipe production and processing |
-
2020
- 2020-06-29 CN CN202021231939.6U patent/CN212983003U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111690798A (en) * | 2020-06-29 | 2020-09-22 | 北京机电研究所有限公司 | Large-scale thin-wall cylinder lifting type spray quenching machine tool |
| CN115747446A (en) * | 2022-10-08 | 2023-03-07 | 中国机械总院集团北京机电研究所有限公司 | Be used for handling large-scale thin wall head aluminum component shape nature and regulate and control heat treatment device in coordination |
| CN117758037A (en) * | 2023-12-26 | 2024-03-26 | 江苏省埃迪机电设备实业有限公司 | Intelligent heat treatment equipment and method for corrugated pipe production and processing |
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