KR200311527Y1 - A device for welding impeller of exhaust fan - Google Patents

Abstract

The present invention relates to an impeller welding apparatus of an exhaust fan, and in particular, a fixed post 15 is attached to an upper portion of the base 11, and a lifting frame 13 supported by the lifting cylinder 12. ) Is penetrated to the fixed post 15 so that the rotating shaft 16 is driven in the center of the upper surface of the fixed post 15 by the motor 14, the gear driven by the motor 29 A guide hole 13-1 having a built-in 30 therein, wherein the upper and lower sections 60 are formed at upper ends of the lifting frame 13; A welding pipe 23 is formed on each of the left and right sides of the sealing chamber 18 in which the impeller 1 is rotatably embedded by the support shaft 21, and a bearing block 24 supporting the welding pipe 23. The sealing part 62 is attached to the inner surface of the upper end of the lifting frame 13 and the gear 25 installed in the one side welding pipe 23 is engaged with the gear 26 driven by the motor 27. Wow; A welding header (32) inserted into the guide hole (13-1) and having a gear (54) attached to the gear (30) on an upper surface thereof; The vertical rack bar 34 is supported to be moved and rotated by the fixed pipe 35 and the fixed cover 37 installed on the front side of the welding header 32, and a welding plate attached to the lower end of the vertical rack bar 34. The impeller welding apparatus of the exhaust fan which consists of the welding part 61 to which the welding torch 33, the filler metal supply pipe 40, the camera 42, and the dust collecting pipe 41 are fixed to 39 is provided. .

Description

Impeller welding device of exhaust fan {A DEVICE FOR WELDING IMPELLER OF EXHAUST FAN}

The present invention relates to an impeller welding apparatus of an exhaust fan, and in particular, an exhaust fan, which is an oxidation water treatment facility that treats fume-type hydrochloric acid generated in a pickling process during a cold rolled coil production process ( In order to prevent oxidation and embrittlement that occur when welding the impeller of the exhaust fan, the impeller of the exhaust fan that performs welding in argon (Ar) atmosphere, which is a shielding gas, Impeller) relates to a welding apparatus.

In general, an impeller of an exhaust fan installed to remove fumes generated in a pickling process of a steel mill is made of titanium having excellent acid and corrosion resistance.

At this time, the impeller made of titanium reacts violently with oxygen, nitrogen, hydrogen, etc. in the air during welding to oxidize and embrittle.

Accordingly, in order to prevent oxidation and embrittlement of the impeller during welding, a shielding chamber 2 is mounted on a fixed shaft 7 having a lower end fixed to a positioner 4 as shown in FIG. 1. ), The impeller (1) is built into this sealing chamber and covered with a cover (3).

Then, the two gas supply pipes 6 connected to the gas cylinder 5 are coupled to the sealing chamber 2, which is blocked from the outside, by using a nozzle, and when the main valve of the gas cylinder is opened during welding, the gas supply pipe is sealed. Argon gas, the ding gas, is introduced into the sealing chamber to make the inside of the sealing chamber an argon gas atmosphere.

At this time, the operator puts both hands into the insertion opening 8 located in the front of the sealing chamber 2, the filler metal 9 in one hand, the welding torch 10 in the other hand and the lower disk and vane of the impeller 1 When the welding torch 10 is pointed at the intersection of the welding torch and the switch of the welding torch 10 is pressed, an arc is generated. When the welding starts to melt, the welding is supplied while supplying the filler metal 9, and then at the end of welding. When pressing the switch of the cutout 10 to stop the arc and operate the positioner 4 to rotate the impeller, the welding part is changed. When welding and rotation are repeated in the same manner as described above, a plurality of welding parts which are the intersection points of the lower disk and the vane are completed. do.

When the welding of the lower side of the impeller 1 is completed, the cover 3 of the sealing chamber 2 is opened, the impeller is drawn out, the upper side of the impeller is turned to the lower side, and the cover is put back into the sealing chamber, and then the cover is closed. Manual welding is performed as described above.

However, in the conventional welding method of the impeller 1, since both hands of the operator are located in a narrow space between the vane and the vane of the impeller, it is difficult to check the weld due to the operator's view of the worker, which leads to poor welding and thereby the durability of the impeller. Degrading problem is provided.

In addition, when the impeller 1 rotates, air is introduced into the sealing chamber 2 due to frequent opening of the insertion hole 8, causing defects in the welding part, and due to the nonuniformity of the welding bead, the center of gravity of the impeller This eccentricity causes a problem such as additional attachment of a separate balance weight to grasp its center of gravity.

The present invention is an oxidation and embrittlement phenomenon that occurs when welding the impeller of an exhaust fan, an oxidation water treatment facility that treats fume-type hydrochloric acid generated during the pickling process during the production of cold rolled coil. It is an object of the present invention to provide an impeller (Impeller) welding apparatus of an exhaust fan for welding in an argon (Ar) atmosphere that is a shielding gas (ShiedlingGas) in order to prevent.

1 is a perspective view showing an impeller welding apparatus of a conventional exhaust fan;

Figure 2 is a perspective view showing the impeller welding apparatus of the exhaust fan according to the present invention,

Figure 3 is an exploded perspective view showing an impeller welding apparatus of the exhaust fan according to the present invention,

Figure 4 is a cross-sectional view showing an impeller welding apparatus of the exhaust fan according to the present invention,

Figure 5a, b is a perspective view showing a welding portion of the impeller welding apparatus of the exhaust fan according to the present invention.

<Explanation of symbols for main parts of drawing>

DESCRIPTION OF SYMBOLS 1 Impeller 2: Sealing chamber 3: Cover 4: Positioner 5: Gas boom 6: Gas supply pipe 7: Fixed shaft 8: Insertion hole 9: Filler 10: Welding torch 57: Control panel 58: Filler coil 59: Gas distributor 60: Upper and lower sections 61: Welding section 62: Sealing section 64: Sealing gas supply pipe 65: Welding machine 66: Limit switch G: Guide pipe

In order to achieve the above object, the present invention is a fixed post is attached to the upper portion of the base, the lifting frame supported by the lifting cylinder is penetrated to move to the fixed post, the axis of rotation in the center of the upper surface of the fixed post It is installed so as to be driven by, and the upper and lower portion is formed in the upper end of the guide hole for embedding the gear driven by the motor, respectively; Welding tubes are formed on the left and right sides of the sealing chamber in which the impeller is rotatably embedded by the support shaft, and a bearing block for supporting the welding tubes is attached to the inner side of the upper end of the lifting frame, and installed on the one side welding tube. A sealing part in which the gear is tooth-engaged with the gear driven by the motor; A welding header inserted into the guide hole and having a gear coupled to the gear on an upper surface thereof; The vertical rack bar is supported to be moved and rotated by a fixed tube and a fixed cover installed on the front side of the welding header, and a welding torch and filler material supply pipe, a camera and a dust collecting tube are fixed to a welding plate attached to the bottom of the vertical rack bar. It provides an impeller welding apparatus of the exhaust fan, characterized in that consisting of a weld.

The structure of this invention is demonstrated by drawing.

Figure 2 is a perspective view showing an impeller welding apparatus of the exhaust fan according to the present invention, Figure 3 is an exploded perspective view showing an impeller welding apparatus of the exhaust fan according to the present invention, Figure 4 is an impeller welding apparatus of the exhaust fan according to the present invention 5A and 5B are perspective views showing a welded portion of an impeller welding apparatus for an exhaust fan according to the present invention.

The upper and lower portions 60 of the impeller welding apparatus of the exhaust fan according to the present invention are fixed to the fixed post 15 by welding on the upper surface of the fixed base 11, and both sides of the fixed post are formed with vertical vertical holes on opposite sides. The lifting frame 13 of the shape is fitted.

At this time, the lifting frame 13 is moved up and down by the lifting cylinder 12 attached to the center of the upper surface of the fixed base 11 along the vertical hole of the fixed post 15, the limit switch is installed on the left and right sides of the upper surface When 28 is touched by the lower surface of the fixed post 15, the lifting operation of the lifting cylinder 12 is stopped.

Here, guide holes 13-1 are formed at upper ends of the lifting frame 13 positioned on the fixed post 15, respectively, and the welding heads 32 are formed on the guide holes 13-1. It is inserted to move.

In addition, a pinion gear 30 driven by the drive motor 29 is provided above the guide hole 13-1, and the pinion gear 30 is in the left and right longitudinal direction on the upper surface of the welding head 32. It is meshed with the attached rack gear 54.

In addition, a bevel gear 17-2 is attached to the outer circumferential surface of the middle of the upper surface of the fixed post 15 so that the lower end is rotatably coupled thereto, and the bevel gear 17-2 is a motor 14. It is engaged with the bevel gear 17-1 driven by

On the other hand, in the sealing part 62, covers 19-1 and 19-2 are bolted to upper and lower portions of the sealing chamber 18 in which the impeller 1 is incorporated, and the upper and lower ends are respectively covers 19-1 and 19. The impeller 1 is fixed to the support shaft 21 penetrating by the bearings 20-1 and 20-2 at the center of -2) through the split pins 22.

At this time, the lower end of the support shaft 21 penetrating the lower cover 19-2 is inserted into the rotating shaft 16 supporting the lower cover 19-2 so that the support shaft 21 rotates at the same time.

And, the welded pipe 23 welded to the left and right sides of the sealing chamber 18, the bearing block 24 is coupled to the outer end thereof, in particular the gear 25 provided on the right outer peripheral surface of the right welded pipe is a bearing block It is engaged with the gear 26 of the motor 27 attached to the upper surface of (24).

Here, the bearing block 24 is fixedly attached to the inner surface of the upper end of the lifting frame 13, respectively.

On the other hand, the welding portion 61 is inserted into the guide hole (13-1) so that the welding head 32 is moved left and right by the pinion gear 30 and the rack gear 54, which is engaged by the rotation of the drive motor 29. It is.

At this time, the drive shafts 38 and 48, which are rotated by the low-speed motors 44 and 45, penetrate in the left and right directions to the welding head 32 having the front side embedded in the sealing chamber 18 through the welding pipe 23. It is.

Here, the fixed tube 35 is externally coupled to the front portion of the drive shaft 38 extending toward the front of the welding head 32, the fixing tube 35 is fixed to the support cover 37 in the front end and the rear end of the welding head ( 32) is rotatably coupled to the front.

In addition, the support cover 37 inserted so that the vertical rack bar 34 is moved in and out is built in the pinion gear 36 coupled to the front end of the drive shaft 38, the pinion gear 36 is a vertical rack bar (34) The vertical rack bar 34 is moved when the drive shaft 38 is rotated by the low speed motor 44.

Further, a drive gear 43-1 is coupled to the front end of the drive shaft 48 extending toward the front side of the welding head 32, and the drive gear 43-1 is driven by being fixed to the outer circumferential surface of the fixed pipe 35. Tooth coupling with the gear 43-2 rotates the fixed tube 35 during rotation by the low-speed motor 45 to rotate the vertical rack bar 34 about the fixed tube (35).

In addition, a welding plate 39 is attached to the vertical rack bar 34, and a welding torch 33 and a filler metal supply pipe 40 are penetrated to the lower side to be welded to the welding plate 39. A trumpet-shaped dust collecting tube 41 for discharging the gas and fume generated at the time to the outside is penetrated to the lower side.

At this time, the dust collecting tube 41 is connected to the dust collecting fan 47 fixed to the rear side of the welding head 32, the filler metal 55 is supported by the support roller 49 through the guide tube (G). Then, it is moved by the pressure roller 50 and the feed roller 51 provided on the side of the welding head 32 is supplied through the filler metal supply pipe 40.

Here, the feed roller 51 is fixed to the outer end of the bevel gear shaft 52 passing through the side of the welding head 32 by a nut, and the motor 46 to the inner gear of the bevel gear shaft 52. It is engaged with the bevel gear shaft 53 being driven.

In addition, the camera 42 attached to the lower surface of the welding plate 39 is connected to the CRT screen 56 and the control panel 57 to check the position of the welding torch 33, and through the CRT screen 56. The control panel 57 is operated while checking the position of the welding torch 33 so that the welding torch can be moved up and down and left and right.

And, the welding torch 33 for welding the vanes of the impeller 1 in the sealing chamber 18 while being mounted to the front side of the welding head 32 is connected to the welding machine 65 installed outside by a cable have.

On the other hand, the shielding gas supply pipe 64 for supplying the shielding gas into the sealing chamber 18 is connected to the right side welding pipe 23, one side through the upper end of the lifting frame 13, the other side is the gas boom It is coupled to the gas distributor 59 of (5).

Hereinafter, the operation of the present invention.

First, when the main valve of the sealing gas cylinder 5 is opened while the impeller is embedded in the sealing chamber 18, the sealing gas is controlled by the flow regulator and supplied to the gas distributor 59, and the gas distributor 59 is provided. The supplied shielding gas is supplied into the shielding chamber 18 through the shielding gas supply pipe 64.

The sealing gas supplied in this way is made into the argon gas atmosphere which is the sealing gas 18 inside the sealing chamber 18, and when the argon gas atmosphere is formed, the switch of the welding machine 65 is "ON", turning on the switch of the control panel 57. The shielding gas supplied from the gas distributor 59 is controlled in the welder 65.

In this case, the welding current, the welding voltage, the filler metal supply speed, and the welding speed are set in the control panel 57. When the driving motor 29 is driven in the control panel, the pinion gear 30 is rotated, and the rack gear 54 is engaged. At the same time, as the welding head 32 is advanced, the rear limit switch 66 of the rack gear 54 is touched on the outer surface of the lifting frame 13 to stop driving of the driving motor 29. .

Then, the welding torch 33 is positioned at the intersection of the lower disk and the vane of the impeller 1, that is, the welding part, by advancing the welding head 32, and the switch for operating the welding torch is "ON". &Quot; Arc is generated, and when the weld begins to melt with this heat source, the control panel 57 drives the motor 46.

Here, when the bevel gear shaft 53 is rotated by the motor 46, the feed roller 51 of the bevel gear shaft 52 is rotated, whereby the filler material conveyed by the feed roller 51 and the pressure roller 50 55 is continuously supplied during welding through the filler metal supply pipe 40 while being unwound from the filler metal coil 58.

In addition, while the welding is in progress, the control panel 57 controls the driving of the motor 46 and the transfer motor 29 according to the set filler metal supply speed and the welding speed.

At this time, when the welding progresses and the welding torch 33 reaches the end point of welding, the arc of the welding torch is sensed by the limit switch 66 and the motor 46 driving the feed roller 51 at the same time. It is also turned off to stop supplying the filler metal 55.

Here, the driving motor 29 is reversely rotated to reverse the welding head 32, whereby the front end portion in which the welding torch 33 or the like is mounted is pulled out of the sealing chamber 18 and the welding tube 23 is rotated. Built in).

In addition, when the motor 14 is operated by operating the control panel 57, the rotating shaft 16 is rotated by the toothed bevel gears 17-1 and 17-2, and the support inserted into the upper portion of the rotating shaft 16 is supported. As the shaft 21 is rotated, the impeller 1 is rotated, thereby changing the welding part of the impeller.

On the other hand, when the welding part of the impeller 1 is changed, the welding operation is repeated again, and the welding progress is checked through the welding confirmation window 10-1 or the CRT screen 56 while the welding is in progress. do.

Then, when the position of the welding torch 33 appearing on the CRT screen 56 through the welding position camera 42 moves away from or close to the welding portion, the low speed motors 44 and 45 are driven on the control panel 57 to drive the drive shaft. Rotate (38,48).

Therefore, the vertical rack bar 34 is moved in accordance with the rotational direction of the pinion gear 36 by the rotation of the drive shaft 38, and the fixing tube 35 which is rotated by the driven drive shaft 48 is supported by the support cover 37. Tilt the

At this time, the welding plate 39 is inclined inclined while moving, thereby adjusting the welding angle and the welding distance of the welding torch 33 to the welding portion.

In addition, the gas and fume generated during welding are sucked into the dust collecting tube 41 and discharged into the atmosphere through the dust collecting fan 47, thereby securing a clock of the welding part checking camera 42. do.

Repeated in the same manner as described above, when a plurality of vanes installed on the lower disk of the impeller 1 is completed welding the lifting cylinder 12 to operate the lifting frame 13 to raise the sealing chamber 18 is raised support shaft The lower end of 21 is separated from the upper part of the rotating shaft 16.

At this time, when the limit switch 28 is touched on the lower surface of the fixed post 15, the lifting cylinder 12 is stopped, thereby lifting the lifting frame 13 is stopped.

Then, when the lifting frame 13 is raised and the lower end of the support shaft 21 is separated from the upper part of the rotation shaft 16, the motor 27 is operated in the control panel 57, whereby the gear 26 is engaged with the gear 26. As the gear 25 is rotated, the sealing chamber 18 is rotated 180 ° so that the impeller 1 is turned upside down so that the welded lower disk is positioned at the top.

Here, when the upper and lower positions of the sealing chamber 18 are changed, the lifting frame 13 is lowered by the operation of the lifting cylinder 12, and at the same time, the lower end of the support shaft 21 is inserted into the upper end of the rotation shaft 16. .

In this way, when the welded portion of the impeller 1 is secured, the above welding operation is repeated to finish welding the upper and lower discs of the impeller.

On the other hand, when welding is completed, the switch on the control panel 57 is turned off, the main valve of the gas cylinder 5 is closed, and the upper cover 19-1 is separated from the sealing chamber 18 to complete the welding of the impeller 1. Withdraw the job is complete.

The present invention is made under perfect argon atmosphere when welding the exhaust fan, so that oxidation and embrittlement of the welded part and the back part can be suppressed and the durability of the impeller can be increased. It will provide the effect of the image.

Claims (1)

The fixed post 15 is attached to the upper part of the fixed base 11, and the lifting frame 13 supported by the lifting cylinder 12 penetrates to the fixed post 15 so as to move upward and downward. In the center of the upper surface of the rotating shaft 16 is driven by the motor 14, the guide hole (13-1) containing the pinion gear 30 driven by the drive motor 29 is the lifting frame ( 13 and an upper and lower portions 60 respectively formed on the upper end portion; A welding pipe 23 is formed on each of the left and right sides of the sealing chamber 18 in which the impeller 1 is rotatably embedded by the support shaft 21, and a bearing block 24 supporting the welding pipe 23. The sealing part 62 is attached to the inner surface of the upper end of the lifting frame 13 and the gear 25 installed on one side of the welding pipe 23 is engaged with the gear 26 driven by the motor 27. )Wow; A welding header 32 inserted into the guide hole 13-1 and having a rack gear 54 that is engaged with the pinion gear 30 on an upper surface thereof; The vertical rack bar 34 is supported to be moved and rotated by the fixed pipe 35 and the fixed cover 37 installed on the front side of the welding header 32, and a welding plate attached to the lower end of the vertical rack bar 34. An impeller welding apparatus for an exhaust fan, comprising a welding portion 61 to which a welding torch 33, a filler metal supply pipe 40, a camera 42, and a dust collecting pipe 41 are fixed to 39.