阅读说明：本技术 一种用于真空渗碳过程的变频调速装置及其调速方法 (Variable-frequency speed regulation device for vacuum carburization process and speed regulation method thereof ) 是由 沈红星 于 2021-08-05 设计创作，主要内容包括：本发明涉及真空管渗碳炉术领域,具体涉及一种用于真空渗碳过程的变频调速装置及其调速方法；支架活动设置有搅拌组件,每个热电偶的检测端分别与一个搅拌组件的输出端相对应,传动件的一端与搅拌组件卡合连接,传动件的另一端设置有从动齿轮,动力组件的输出端与从动齿轮相对应,利用辐射管对工作区内的工件进行加热,同时在加热过程中,利用各个热电偶分别检测工作区内各个部位的温度,并根据预设值启动对应的动力组件,利用从动齿轮带动传动件转动,从而带动搅拌组件转动,从而减小工作区内各部位升温过程中的温度差,使得工件均匀渗碳。(The invention relates to the field of vacuum tube carburizing furnace technology, in particular to a variable frequency speed regulating device and a speed regulating method thereof for a vacuum carburizing process; the support activity is provided with the stirring subassembly, the sense terminal of every thermocouple is corresponding with the output of a stirring subassembly respectively, the one end and the stirring subassembly block of driving medium are connected, the other end of driving medium is provided with driven gear, power component's output is corresponding with driven gear, utilize the radiant tube to heat the work piece in the workspace, simultaneously in the heating process, utilize each thermocouple to detect the temperature at each position in the workspace respectively, and start the power component who corresponds according to the default, utilize driven gear to drive the driving medium and rotate, thereby drive the stirring subassembly and rotate, thereby reduce the temperature difference of each position intensification in-process in the workspace, make the even carburization of work piece.)

1. A variable frequency speed regulation device for vacuum carburization process is characterized in that,

the variable-frequency speed regulation device for the vacuum carburizing process comprises a vacuum carburizing furnace, a plurality of radiant tubes, a plurality of thermocouples, a plurality of supports, a plurality of stirring assemblies, a transmission part and a plurality of power assemblies, wherein the plurality of radiant tubes penetrate through the shell of the vacuum carburizing furnace and are distributed around the working area of the vacuum carburizing furnace;

the top of vacuum carburizing furnace is provided with a plurality of power component, every the driving medium all runs through the top of vacuum carburizing furnace, every the driving medium is located the inside one end of vacuum carburizing furnace respectively with correspond the stirring subassembly block is connected, every the driving medium is located the outside one end of vacuum carburizing furnace all is provided with driven gear, power component's output with driven gear is corresponding.

2. The variable frequency speed device for vacuum carburization according to claim 1, wherein,

every the support all includes connecting plate, backup pad and support ring, the connecting plate with the inner wall of vacuum carburizing furnace is dismantled and is connected, the one end of backup pad with connecting plate fixed connection, the other end of backup pad with support ring fixed connection, the activity is provided with on the support ring the stirring subassembly.

3. The variable frequency speed device for vacuum carburization according to claim 2,

every the stirring subassembly all includes (mixing) shaft, stirring fan blade and stopper, the (mixing) shaft runs through the support ring, the one end of (mixing) shaft is provided with stirring fan blade, the other end of (mixing) shaft is provided with the draw-in groove, the driving medium is close to the one end of support ring with draw-in groove looks adaptation, the stopper with (mixing) shaft fixed connection, and be located the (mixing) shaft is close to the one end of draw-in groove, and with the upper surface of support ring is laminated mutually.

4. The variable frequency speed device for vacuum carburization according to claim 3,

every power component all includes servo motor, gear change box and output gear, servo motor with vacuum carburizing stove is dismantled and is connected, and is located the top of vacuum carburizing stove, servo motor's output is provided with gear change box, gear change box's output is provided with output gear, output gear with driven gear meshes.

5. The variable frequency speed device for vacuum carburization according to claim 1, wherein,

every the radiant tube all is hollow structure setting, every all be provided with a plurality of efflux holes on the radiant tube, it is a plurality of efflux hole evenly distributed is in on the radiant tube.

6. A speed control method using the variable frequency speed control device for vacuum carburization according to claim 1, characterized by comprising the steps of:

placing a workpiece in a working area of the vacuum carburizing furnace, and heating the workpiece in the working area by using the radiant tube;

respectively detecting the temperature of each part in a working area by using each thermocouple, and starting the corresponding power assembly according to a preset value;

the driven gear is utilized to drive the transmission part to rotate, so that the stirring assembly is driven to rotate, the temperature difference of each part in a working area in the temperature rising process is reduced, and the workpiece is uniformly carburized.

Technical Field

The invention relates to the technical field of vacuum carburizing furnaces, in particular to a variable-frequency speed regulating device and a variable-frequency speed regulating method for a vacuum carburizing process.

Background

The vacuum carburization process is a pulse process, i.e., a process in which a strong carburization pulse stage and a diffusion stage are alternately performed. And (3) charging a carburizing agent into the quenching furnace in the strong carburizing stage, stopping charging the carburizing agent in the diffusion stage, pumping out residual gas with low carbon atom content in the quenching furnace through a vacuum pump system to ensure that the furnace reaches a working vacuum degree, and charging new carburizing agent when the next pulse comes so as to uniformly carburize.

The existing vacuum carburizing quenching furnace is generally internally provided with a stirring fan, and aims to generate convection in a hearth and homogenize the atmosphere and temperature in the furnace, but the stirring fan in the existing vacuum carburizing quenching furnace has a simple structure, cannot accurately adjust the temperature of each area in the furnace, and is not uniform in workpiece carburization.

Disclosure of Invention

The invention aims to provide a variable-frequency speed regulating device for a vacuum carburizing process and a speed regulating method thereof, and solves the problems that the structure of a stirring fan in the existing vacuum carburizing furnace in the prior art is simpler, the temperature of each area in the furnace cannot be accurately regulated, and the workpiece carburization is not uniform enough.

In order to achieve the purpose, the invention provides a variable frequency speed regulation device for a vacuum carburizing process, which comprises a vacuum carburizing furnace, a plurality of radiant tubes, a plurality of thermocouples, a plurality of supports, a plurality of stirring assemblies, a transmission part and a plurality of power assemblies, wherein the radiant tubes penetrate through the shell of the vacuum carburizing furnace and are distributed around the working area of the vacuum carburizing furnace;

the top of vacuum carburizing furnace is provided with a plurality of power component, every the driving medium all runs through the top of vacuum carburizing furnace, every the driving medium is located the inside one end of vacuum carburizing furnace respectively with correspond the stirring subassembly block is connected, every the driving medium is located the outside one end of vacuum carburizing furnace all is provided with driven gear, power component's output with driven gear is corresponding.

The method comprises the steps of placing a workpiece in a working area of the vacuum carburizing furnace, heating the workpiece in the working area by using the radiant tube, simultaneously detecting the temperature of each part in the working area by using each thermocouple in the heating process, starting the corresponding power assembly according to a preset value, and driving the transmission member to rotate by using the driven gear, so that the stirring assembly is driven to rotate, the temperature difference of each part in the working area in the temperature rising process is reduced, and the workpiece is uniformly carburized.

Each support comprises a connecting plate, a supporting plate and a supporting ring, the connecting plate is detachably connected with the inner wall of the vacuum carburizing furnace, one end of the supporting plate is fixedly connected with the connecting plate, the other end of the supporting plate is fixedly connected with the supporting ring, and the stirring assembly is movably arranged on the supporting ring.

The connecting plate is fixed on the inner wall of the vacuum carburizing furnace by screws, the connecting plate and the support ring are fixedly connected with the support plate, and the vacuum carburizing furnace is manufactured by adopting an integral forming technology, so that the structure is firmer.

Wherein, every stirring subassembly all includes (mixing) shaft, stirring fan blade and stopper, the (mixing) shaft runs through the support ring, the one end of (mixing) shaft is provided with stirring fan blade, the other end of (mixing) shaft is provided with the draw-in groove, the driving medium is close to the one end of support ring with draw-in groove looks adaptation, the stopper with (mixing) shaft fixed connection, and be located the (mixing) shaft is close to the one end of draw-in groove, and with the upper surface of support ring laminates mutually.

The vacuum carburizing furnace is characterized in that one end of the transmission piece, which is positioned inside the vacuum carburizing furnace, is inserted into the clamping groove, so that the transmission piece drives the stirring shaft to rotate, the temperature of the region is changed by the stirring fan blades, and the limiting block is arranged on the stirring shaft, so that the stirring shaft is prevented from falling off from the support ring.

Each power assembly comprises a servo motor, a gear transmission case and an output gear, the servo motor is detachably connected with the vacuum carburizing furnace and is located at the top of the vacuum carburizing furnace, the output end of the servo motor is provided with the gear transmission case, the output end of the gear transmission case is provided with the output gear, and the output gear is meshed with the driven gear.

And starting the servo motor, and driving the transmission piece to rotate because the output gear is meshed with the driven gear after the output rotating speed of the servo motor is changed by using the gear transmission box.

The radiant tube is of a hollow structure, a plurality of jet holes are formed in the radiant tube, and the jet holes are evenly distributed on the radiant tube.

The radiant tube is provided with a plurality of jet holes, so that the workpiece is heated more uniformly.

The invention also provides a speed regulating method adopting the variable frequency speed regulating device for the vacuum carburization process, which comprises the following steps:

placing a workpiece in a working area of the vacuum carburizing furnace, and heating the workpiece in the working area by using the radiant tube;

respectively detecting the temperature of each part in a working area by using each thermocouple, and starting the corresponding power assembly according to a preset value;

the driven gear is utilized to drive the transmission part to rotate, so that the stirring assembly is driven to rotate, the temperature difference of each part in a working area in the temperature rising process is reduced, and the workpiece is uniformly carburized.

The method comprises the steps of placing a workpiece in a working area of the vacuum carburizing furnace, heating the workpiece in the working area by using the radiant tube, simultaneously detecting the temperature of each part in the working area by using each thermocouple in the heating process, starting the corresponding power assembly according to a preset value, and driving the transmission member to rotate by using the driven gear, so that the stirring assembly is driven to rotate, the temperature difference of each part in the working area in the temperature rising process is reduced, and the workpiece is uniformly carburized.

The invention relates to a variable frequency speed regulation device and a speed regulation method thereof used for a vacuum carburizing process, wherein one end of each bracket far away from a vacuum carburizing furnace is movably provided with a stirring component, a plurality of thermocouples penetrate through the shell of the vacuum carburizing furnace, the detection end of each thermocouple corresponds to the output end of one stirring component, one end of each transmission member positioned in the vacuum carburizing furnace is respectively clamped and connected with the corresponding stirring component, one end of each transmission member positioned outside the vacuum carburizing furnace is provided with a driven gear, the output end of the power component corresponds to the driven gear, a workpiece is placed in a working area of the vacuum carburizing furnace, the workpiece in the working area is heated by using a radiant tube, and simultaneously, the thermocouples are used for respectively detecting the temperature of each part in the working area in the heating process, and starting the corresponding power assembly according to a preset value, and driving the transmission member to rotate by using the driven gear so as to drive the stirring assembly to rotate, thereby reducing the temperature difference of each part in the working area in the temperature rise process and uniformly carburizing the workpiece.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a variable frequency speed regulating device for a vacuum carburization process according to the present invention.

FIG. 2 is a front view of a variable frequency speed control device for vacuum carburization provided by the invention.

Fig. 3 is a sectional view of the inner structure of fig. 2 taken along line a-a according to the present invention.

FIG. 4 is a schematic diagram of the power assembly, transmission member and stirring assembly of the present invention in a disassembled configuration.

Fig. 5 is an enlarged view of a portion of the structure of fig. 4 a according to the present invention.

Fig. 6 is an enlarged view of a portion of the structure of fig. 4B according to the present invention.

FIG. 7 is a flow chart of the steps of a variable frequency speed control method for a vacuum carburization process according to the present invention.

The device comprises a vacuum carburizing furnace 1, a furnace body 11, a support frame 12, a mounting plate 13, a guide groove 131, a radiant tube 2, a jet hole 21, a thermocouple 3, a support 4, a connecting plate 41, a support plate 42, a support ring 43, a stirring assembly 5, a stirring shaft 51, a stirring fan blade 52, a limiting block 53, a clamping groove 54, a transmission piece 6, a driven gear 61, a transmission shaft 62, a clamping block 63, a clamping block 64, a clamping piece 65, an installation piece 66, a fixed block 7, a power assembly 71, a servo motor 72, a gear box 73 and an output gear.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 to 6, the present invention provides a variable frequency speed control device for a vacuum carburizing process, where the variable frequency speed control device for the vacuum carburizing process includes a vacuum carburizing furnace 1, a plurality of radiant tubes 2, a plurality of thermocouples 3, a plurality of supports 4, a plurality of stirring assemblies 5, a transmission member 6 and a plurality of power assemblies 7, the plurality of radiant tubes 2 all penetrate through a casing of the vacuum carburizing furnace 1 and are distributed around a working area of the vacuum carburizing furnace 1, the plurality of supports 4 are arranged on an inner wall of the vacuum carburizing furnace 1, one end of each support 4, which is far away from the vacuum carburizing furnace 1, is movably provided with the stirring assembly 5, the plurality of thermocouples 3 all penetrate through the casing of the vacuum carburizing furnace 1, and a detection end of each thermocouple 3 corresponds to an output end of one stirring assembly 5;

the top of vacuum carburizing furnace 1 is provided with a plurality of power component 7, every driving medium 6 all runs through the top of vacuum carburizing furnace 1, every driving medium 6 is located the inside one end of vacuum carburizing furnace 1 respectively with correspond 5 block connections of stirring subassembly, every driving medium 6 is located the outside one end of vacuum carburizing furnace 1 all is provided with driven gear 61, the output of power component 7 with driven gear 61 is corresponding.

In this embodiment, a workpiece is placed in a working area of the vacuum carburizing furnace 1, the workpiece in the working area is heated by the radiant tube 2, meanwhile, in the heating process, the thermocouples 3 are used for respectively detecting the temperature of each part in the working area, the corresponding power assembly 7 is started according to a preset value, the driven gear 61 is used for driving the transmission member 6 to rotate, so that the stirring assembly 5 is driven to rotate, the temperature difference of each part in the heating process in the working area is reduced, and the workpiece is uniformly carburized.

Further, each support 4 comprises a connecting plate 41, a supporting plate 42 and a supporting ring 43, the connecting plate 41 is detachably connected with the inner wall of the vacuum carburizing furnace 1, one end of the supporting plate 42 is fixedly connected with the connecting plate 41, the other end of the supporting plate 42 is fixedly connected with the supporting ring 43, and the stirring assembly 5 is movably arranged on the supporting ring 43.

In this embodiment, the connecting plate 41 is fixed on the inner wall of the vacuum carburizing furnace 1 by screws, and both the connecting plate 41 and the support ring 43 are fixedly connected with the support plate 42, and are manufactured by an integral molding technique, so that the structure is firmer.

Further, every stirring subassembly 5 all includes (mixing) shaft 51, stirring fan blade 52 and stopper 53, the (mixing) shaft 51 runs through support ring 43, the one end of (mixing) shaft 51 is provided with stirring fan blade 52, the other end of (mixing) shaft 51 is provided with draw-in groove 54, driving medium 6 is close to the one end of support ring 43 with draw-in groove 54 looks adaptation, stopper 53 with (mixing) shaft 51 fixed connection to be located the (mixing) shaft 51 is close to the one end of draw-in groove 54, and with the upper surface of support ring 43 laminates mutually.

In this embodiment, one end of the transmission member 6 inside the vacuum carburizing furnace 1 is inserted into the clamping groove 54, so that the transmission member 6 drives the stirring shaft 51 to rotate, the temperature of the region is changed by the stirring fan blades 52, and the limiting block 53 is arranged on the stirring shaft 51, so that the stirring shaft 51 is prevented from falling off from the support ring 43.

Further, each power assembly 7 comprises a servo motor 71, a gear box 72 and an output gear 73, wherein the servo motor 71 is detachably connected with the vacuum carburizing furnace 1 and is positioned at the top of the vacuum carburizing furnace 1, the gear box 72 is arranged at the output end of the servo motor 71, the output gear 73 is arranged at the output end of the gear box 72, and the output gear 73 is meshed with the driven gear 61.

In the present embodiment, the servo motor 71 is started, and the output rotation speed of the servo motor 71 is changed by the gear box 72, so that the output gear 73 is engaged with the driven gear 61, and the transmission member 6 is driven to rotate.

Further, every radiant tube 2 all is hollow structure setting, every all be provided with a plurality of efflux hole 21 on radiant tube 2, it is a plurality of efflux hole 21 evenly distributed is in on radiant tube 2.

In the present embodiment, the plurality of jet holes 21 are provided on each of the radiant tubes 2, so that the workpiece is heated more uniformly.

Further, vacuum carburizing furnace 1 includes furnace body 11, support frame 12 and mounting panel 13, furnace body 11 with support frame 12 is dismantled and is connected, and is located the top of support frame 12, the top of furnace body 11 is provided with mounting panel 13, mounting panel 13 is the setting of square structure, be provided with a plurality ofly on the mounting panel 13 power component 7.

In the present embodiment, the support plate 42 is provided on the top of the furnace body 11, so that the power module 7 can be more conveniently installed.

Further, each transmission member 6 includes a transmission shaft 62, a fixture block 63 and a clamping member 64, the transmission shaft 62 penetrates through the top of the furnace body 11, the fixture block 63 is disposed at one end of the transmission shaft 62, the driven gear 61 is disposed at the other end of the transmission shaft 62, the fixture block 63 is matched with the clamping groove 54, a plurality of guide grooves 131 are disposed on the mounting plate 13, and the clamping member 64 is fixedly connected with the transmission shaft 62, close to one end of the driven gear 61, of the transmission shaft 62, and is matched with the guide grooves 131.

In this embodiment, when the transmission member 6 is installed, the latch 63 is latched into the slot 54, and the engaging piece 64 is latched into the guide groove 131, so that whether the latch 63 is inserted into the slot 54 is determined by whether the engaging piece 64 is located in the guide groove 131.

Further, the transmission shaft 62 is further provided with a mounting member 65 and a fixing block 66, the fixing block 66 is fixedly connected with the transmission shaft 62 and is located above the engaging member 64, and the mounting member 65 is detachably connected with the mounting plate 13 and covers the fixing block 66.

In the present embodiment, after the attachment 65 is covered outside the fixing block 66, the attachment 65 is fixed to the mounting plate 13 with screws, thereby fixing the position of the actuator 6.

Referring to fig. 7, the present invention further provides a speed regulating method using the above-mentioned variable frequency speed regulating device for vacuum carburizing process, including the following steps:

s1: placing a workpiece in a working area of the vacuum carburizing furnace 1, and heating the workpiece in the working area by using the radiant tube 2;

s2: the thermocouples 3 are used for respectively detecting the temperature of each part in the working area, and the corresponding power assembly 7 is started according to a preset value;

s3: the driven gear 61 is utilized to drive the transmission part 6 to rotate, so that the stirring component 5 is driven to rotate, the temperature difference of each part in the heating process in the working area is reduced, and the workpiece is uniformly carburized.

In this embodiment, a workpiece is placed in a working area of the vacuum carburizing furnace 1, the workpiece in the working area is heated by the radiant tube 2, meanwhile, in the heating process, the thermocouples 3 are used for respectively detecting the temperature of each part in the working area, the corresponding power assembly 7 is started according to a preset value, the driven gear 61 is used for driving the transmission member 6 to rotate, so that the stirring assembly 5 is driven to rotate, the temperature difference of each part in the heating process in the working area is reduced, and the workpiece is uniformly carburized.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.