KR20190124117A - Air blower - Google Patents

Abstract

The present invention relates to an air blower used in environment of high temperature and, more specifically, to an air blower capable of preventing a belt from deteriorating and being damaged and preventing a shaft support unit supporting a shaft of an impeller and lubricating oil charged in the shaft support unit from deteriorating by blocking a rotation shaft and the belt transferring power to rotate the rotation shaft so that the rotation shaft and the belt are not exposed to the high temperature air and dust as the air blower is installed in a pipeline transferring the high temperature air and dust, generated when a door of a coke oven is open, to a dust collector. According to the present invention, the air blower blocks the shaft connected to the impeller and the belt transferring the power to rotate the shaft so that the shaft and the belt are not exposed to the high temperature when the air blower transfers the dust and high temperature air to the dust collector by inducting the dust and high temperature air generated when a door of the coke oven is opened. Therefore, the air blower prevents the shaft support unit supporting the shaft and the lubricating oil charged in the shaft support unit from deteriorating and prevents the belt from being damaged due to deterioration. Therefore, the air blower can be stably operated.

Description

Air blower

The present invention relates to a blower used in a high temperature environment, and more particularly, the rotary shaft is installed in the pipe line for sending dust and hot air generated when opening the door of the coke oven to the dust collector for blowing hot air and dust And preventing the belt transmitting power to rotate the rotating shaft from being exposed to hot air and dust, thereby preventing deterioration of the bearing portion supporting the shaft of the impeller and the lubricant filled therein, and preventing deterioration and damage of the belt. It relates to a blower that can.

In general, the blower is a machine that plays a pivotal role in energy conversion, and is used for air intake and exhaust air conditioning, air conditioning, and air purification in buildings to improve human life, as well as for industrial manufacturing processes, power generation facilities, and combustion air for boilers. It is the most important and most versatile fluid machinery that has contributed greatly to industrial development for supply, subway and tunnel and air intake and exhaust in mines.

Such a blower is composed of an outer casing, an impeller rotatably disposed therein, and a driving motor for rotating and driving the outer casing. The outer casing is manufactured to have an inner space in which the impeller is disposed, and an intake port for sucking gas and an intake gas It has an exhaust port for discharging it integrally.

Intake and exhaust ports of the blower are connected to the intake duct and the exhaust duct, respectively, on the outer circumferential surface of the outer casing. The impeller of the blower is a rotary body having a predetermined diameter and has a plurality of blades fixedly installed at predetermined intervals along the outer circumferential surface thereof, and is mounted at an end of the rotating shaft driven by the driving force of the driving motor to the outer casing. It is embedded in the inner space of the rotationally operable, the rotating shaft is rotatably supported by a plurality of bearing members.

On the other hand, the furnace for melting molten iron ore in the steel mill is provided with a blower having a predetermined amount of air flow to supply a high-temperature gas into the furnace through a blower pipe connected to a plurality of tuyere installed in the lower portion.

However, since such a blower forcibly sucks gas heated up to a temperature of 700 degrees or higher, which is relatively higher than the atmospheric temperature, through the intake port of the outer casing by the impeller's rotation force, and then discharges it through the exhaust port, the heat of the hot gas is rotated through the rotating shaft It is transmitted to the bearing member supporting the.

In this case, when the temperature of the heat transferred to the bearing member lubricated by the lubricating oil such as oil or grease is higher than the heat resistance temperature of the lubricating oil, the viscosity of the lubricating oil is thinned and loses its function as a lubricating oil, thereby supplementing the lubricating oil to the bearing member. Or shorten the time to replace.

In addition, if the viscosity management is not kept constant due to the deterioration of the lubricating oil, there is a problem that causes a large accident of the device together with the breakage of the bearing member which is a core component.

Republic of Korea Patent Publication No. 10-2007-0116195 Republic of Korea Patent Publication No. 10-2001-0056738 Republic of Korea Patent No. 10-1551832

The present invention is to solve the conventional problems as described above, the shaft bearing portion for supporting the shaft by blocking the belt which transmits the power to rotate the impeller and the shaft to be exposed to the high temperature heat when used in a high temperature environment And it is an object of the present invention to provide a blower capable of stable operation by preventing deterioration of the lubricating oil filled therein, and preventing damage and damage caused by deterioration of the belt.

In addition, an object of the present invention is to provide a blower having a bearing portion for supporting the shaft of the impeller, and a cooling means capable of cooling the driven pulley and the belt coupled to the driven pulley.

The blower according to the present invention for achieving the above object is formed with a first passage along the longitudinal direction to allow the passage of hot air therein, the air into the first passage in the length-facing both ends, respectively An outer cylinder portion formed with an inlet port through which air is introduced and an outlet port through which air is discharged out of the first passage; An inner cylinder portion spaced apart from the outer cylinder portion in the outer cylinder portion, and formed therein with a second passage separated from the first passage so as to allow the outside air to pass therethrough, and closed at both ends in the longitudinal direction; A shaft rotatably installed inside the inner cylinder portion, one end of which is exposed to the outside of the inner cylinder portion, and a shaft having a driven pulley at the other end; An impeller installed at the other end of the shaft inside the outer cylinder part and sucking hot air from the inlet side and discharging it to the outlet side; The belt is coupled to the drive pulley coupled to the rotary shaft of the drive motor installed outside the outer cylinder portion and the pulley of the shaft to transfer the power of the drive motor to the shaft is exposed to the hot air passing through the inside of the outer cylinder portion And a protective cover extending to cross between the inner cylinder part and the outer cylinder part so as to be prevented and formed to surround the belt.

 And a cooling unit for introducing external air into the second passage of the inner cylinder portion to cool the driven pulley and the belt and discharging the outside air to the outside of the second passage of the inner cylinder portion.

The cooling unit is installed in one side is in communication with the inner cylinder portion of the side opposite to the driven pulley, the other side is coupled to the outflow duct portion is installed to be exposed to the outside of the outer cylinder portion, the shaft inside the inner cylinder portion And a cooling fan that sucks outside air from the protective cover side while discharging to the outlet duct part while rotating with the shaft.

The cooling unit is installed on one side and the other side of the inner cylinder portion so as to communicate with the second passage of the inner cylinder portion, the other side of the inlet duct portion and the outlet duct portion is installed to be exposed to the outside of the outer cylinder portion, and the inside of the inner cylinder portion And a cooling fan that is coupled to the shaft and sucks outside air from the protective cover or the inlet duct unit side while rotating together with the shaft to discharge the outlet air to the outlet duct side.

And a supporting part for supporting the driving motor, wherein the supporting part includes a gap adjusting part for adjusting a distance between the driving motor and the outer cylinder part to adjust the tension of the belt between the driving pulley and the driven pulley. It is done.

In the blower according to the present invention, when the dust and hot air generated in opening the door of the coke oven are sucked out and sent to the dust collector, the belt coupled to the impeller and the belt transmitting power to rotate the shaft are exposed to high temperature heat. By blocking so as not to prevent, deterioration of the bearing portion and the lubricating oil filled therein to support the shaft, there is an advantage that can be stable operation by preventing damage and breakage caused by deterioration of the belt.

In addition, the blower according to the present invention has a bearing portion for supporting the shaft of the impeller, and a cooling means for cooling the belt coupled to the driven pulley and the driven pulley provided in the shaft and the bearing portion for supporting the shaft and By preventing the deterioration of the filled lubricant, there is an advantage that the stable operation is possible by preventing the damage and damage caused by the deterioration of the belt.

1 is a plan view of a blower according to a first embodiment of the present invention.
2 is a plan view of a blower according to a second embodiment of the present invention.
3 is a side view of the blower shown in FIG.
4 is a front view of the blower shown in FIG.
5 is a rear view of the blower shown in FIG.

Hereinafter, a blower according to a preferred embodiment of the present invention with reference to the accompanying drawings will be described in detail.

1 to 5 illustrate a blower according to the present invention. 1 to 5, the blower 1 according to the present invention includes an outer cylinder portion 100, an inner cylinder portion 200, a shaft 300, an impeller 400, a protective cover 500, And a rotation driving unit 600 and a cooling unit 700.

The outer cylinder part 100 has a first passage 101 formed in the longitudinal direction to allow the passage of hot air therein, and an inlet through which air is introduced into the first passage 101 at both ends of the length? An outlet 120 through which air flows out of the 110 and the first passage 101 is formed.

An inlet flange 111 and an outlet flange 121 are provided at the inlet 110 side and the outlet 120 side of the outer cylinder part 100 so as to be able to couple the flexible inlet pipe 115 and the outlet pipe 125, respectively. Is installed.

The inner cylinder part 200 is parallel to the outer cylinder part 100 inside the outer cylinder part 100, and is installed to be spaced apart from the outer cylinder part 100. Inside the inner cylinder portion 200 is formed a second passage 201 is isolated from the first passage 101 so that the outside air can pass. The inner cylinder portion 200 is formed such that both ends of the longitudinal direction are closed so that the second passage 201 is completely separated from and isolated from the outer passage portion 100 and the first passage 101.

The end side of the inner cylinder portion 200 facing the outlet 120 side of the outer cylinder portion 100 has a lampshade or tapered structure in which the outer diameter gradually decreases from the inlet 110 side of the outer cylinder portion 100 toward the outlet 120 side. Is formed. The outer cylinder portion 100 is provided with an opening and closing portion 230 that can be opened and closed to look inside or check.

The shaft 300 is rotatably installed in the inner cylinder part 200, and one end thereof is installed to be exposed to the outside of the inner cylinder part 200 toward the inlet port 110 side of the outer cylinder part 100, and the other side thereof. At the end, there is a driven pulley 330 installed in the inner cylinder part 200 so as to be engaged with the belt 630 which transmits power from the outside of the outer cylinder part 100 via the outer cylinder part 100.

The driven pulley 330 is installed at the rear end side of the inner cylinder portion 200 corresponding to the outlet 120 from both sides in the longitudinal direction of the inner cylinder portion 200.

The shaft 300 is rotatably installed in the bearing parts 310 and 320 provided at the center side of the inner cylinder part 200.

The bearing parts 310 and 320 have one end fixed to the inner circumferential surface of the inner cylinder part 200, and the other end fixed to the ends of the plurality of support ribs 309 extending toward the center of the inner cylinder part 200.

The bearing parts 310 and 320 are configured to include a fixed block and a bearing member installed on the fixed block. In addition, the bearing parts 310 and 320 may include a first bearing part 310 and a second bearing part 320 which are disposed to be spaced apart along the longitudinal direction of the inner cylinder part 200 and the first bearing part 310. ) Is disposed to face the outlet 120 side of the outer cylinder portion 100, and the second bearing 320 is disposed to face the inlet 110 side of the outer cylinder portion 100.

The shaft 300 is provided with a driven pulley 330 coupled to the belt 630 at one end thereof, and the other end thereof has a first shaft 301 connected to the first bearing 310 and a first shaft 301. One end is connected to the bearing 310 and the other end is connected to the second shaft 302, and one end is connected to the second bearing 320 and the other end is the inlet ( It is configured to include a third shaft 303 is installed to be exposed to the outside of the inner cylinder 200 toward the 110 side is connected to the impeller 400. The first shaft 301 to the third shaft 303 are coupled to each other to rotate in conjunction. The second shaft 302 is provided with a cooling fan 730 to be described later.

In addition, the first shaft 301 inside the inner cylinder portion 200 may cool the first shaft portion 310 that rotatably supports the first shaft 301 with respect to the inner cylinder portion 200. An auxiliary cooling fan 305 is rotated together with the 301 is installed.

The auxiliary cooling fan 305 rotates together with the cooling fan to be described later to assist intake of the outside air through the protective cover and to cool the first bearing 310.

Impeller 400 is fixed to the end of the shaft 300 in the outer cylinder portion 100 on the inlet 110 side is rotated with the shaft 300 while sucking the hot air from the inlet 110 side outlet 120 ) To the side.

The protective cover 500 is coupled between the driving pulley 620 coupled to the rotational shaft of the driving motor 610 installed outside the outer cylinder part 100 and the driven pulley 330 of the shaft 300 of the driving motor 610. The belt 630 which transmits power to the shaft 300 is prevented from being exposed to the hot air passing through the outer cylinder part 100 by the rotation of the impeller 400, and is formed to surround the belt 630. And cross the first passage 101 between the inner cylinder portion 200 and the outer cylinder portion 100.

The protective cover 500 has a hollow portion 501 formed therein so that the belt 630 can pass therethrough, and is formed in a cylindrical or square cylindrical shape in which both ends are open.

The protective cover 500 is coupled to the inner cylinder 200 so that one end of the protective cover 500 communicates with the second passage 201 of the inner cylinder 200, and the other end of the protective cover 100 penetrates through the outer cylinder 100. It is installed to be exposed to the outside.

The end of the protective cover 500 extends toward the driving pulley 620 so as to surround and protect the driving pulley 620 coupled to the driving motor 610 to be described later from the foreign matter such as rain, snow or dust as shown The cover 510 is further provided. The extension cover 510 has a flow path through which air can pass, and both ends of the extension cover 510 are open. As shown in the drawing, the extension cover 510 may close one side to block the inflow of foreign substances to one side end extending toward the driving pulley 620 and open the lower portion of the extension cover 510 toward the ground.

The rotary drive unit 600 is coupled to the other side of the belt 630 connected to the driven pulley 330 coupled to the end of the shaft 300 to rotate the belt 630, the drive motor 610, the drive A driving pulley 620 coupled to the rotation shaft of the motor 610 and coupled to the other side of the belt 630 coupled to the driven pulley 330, and the driving motor 610 and the outer cylinder part 100. Supporting support 640 is included.

The support part 640 is installed on the main frame part 650, the first support part 660 installed on the main frame part 650 to support the driving motor 610, and the outer frame part 100. ) Is configured to include a second support part 670 and a dustproof part 680.

The main frame part 650 is formed by combining a plurality of angle members 651 in a square shape.

The first support part 660 includes a first mounting bar 661 and a second mounting bar 662, a first moving bar 663 and a second moving bar 664, and a gap adjusting part 665. .

The first mounting bar 661 and the second mounting bar 662 are formed to have a predetermined width, and are spaced apart at regular intervals along the longitudinal direction of the driving motor 610 on the main frame part 650, and are arranged side by side. It is fixed.

The first moving bar 663 and the second moving bar 664 are disposed on the first mounting bar 661 and the second mounting bar 662, respectively, and correspond to both sides of the driving motor 610 in the width direction. The first fixing bracket 663A and the second fixing bracket 663B which are respectively fixed to the driving motor 610 are provided at both ends of the longitudinal direction, and the first mounting bar 661 and the second mounting bar ( 662 respectively.

The gap adjusting unit 665 includes a first fixing block 665A and a second fixing block 665B, a first gap adjusting bolt 665C, and a second gap adjusting bolt 665D.

The first fixing block 665A and the second fixing block 665B are spaced apart on both sides of the first moving bar 663 and the second moving bar 664 in the longitudinal direction, respectively. Bolting holes are provided at both sides of the bar 662 in the longitudinal direction, and penetrated in the direction corresponding to the longitudinal direction of the first mounting bar 661 and the second mounting bar 662, respectively.

The first gap adjusting bolt 665C and the second gap adjusting bolt 665D are screwed to the first fixing block 665A and the second fixing block 665B, respectively, and the ends of the first gap adjusting bolt 665C and the first moving bar 663 and the first fixing bar 665C. The first fixing bar 663A and the second fixing bracket 663B respectively provided on the two moving bars 664 interfere with the first mounting bar 663 and the second moving bar 664, respectively. 661 and the second mounting bar 662 are moved along the longitudinal direction to adjust the distance from the outer cylinder portion 100.

For example, when the first interval adjusting bolt 665C is loosened in the first fixing block 665A, and the second interval adjusting bolt 665D is tightened in the second fixing block 665B, the first moving bar 663 and the second are fixed. The moving bar 664 is moved toward the first fixing block 665A along the first mounting bar 661 and the second mounting bar 662, and the driving motor 610 is also moved to the first fixing block 665A. .

The gap adjusting unit 665 may adjust the distance of the driving motor 610 with respect to the outer cylinder portion 100 to adjust the tension of the belt 630 connected between the driving motor 610 and the inner cylinder portion 200. Easy to adjust

The second support part 670 has one end fixed to the angle member 651 of the main frame part 650 and the other end extending a predetermined length upward to be coupled to the outer cylinder part 100 so that the outer cylinder part with respect to the main frame part 650. A plurality of support brackets 671 for supporting the spaced apart (100).

The dustproof part 680 is installed at the lower end of the mainframe part 650 to support the mainframe part 650 with respect to the ground to absorb and cushion the vibration generated by the driving motor 610.

The cooling unit 700 is installed inside the inner cylinder part 200, and the second passage of the inner cylinder part 200 to cool the bearing parts 310 and 320, the driven pulley 330, and the belt 630 ( Inflow of the outside air to the 201, and to flow along the second passage 201, and to discharge the outside air to the outside of the second passage (201), in the present embodiment as shown in FIG. 710 and a cooling fan 730 are configured.

Referring to FIG. 1, the outflow duct part 710 is installed at the front end side of the inner cylinder part 200 corresponding to the inlet 110 among both longitudinal sides of the inner cylinder part 200, and a flow path is formed therein. One side is installed in the inner cylinder 200 to communicate with the second passage 201 of the inner cylinder 200, the other side is installed to be exposed to the outside of the outer cylinder 100 across the first passage (101).

The cooling fan 730 is coupled to the shaft 300 inside the inner cylinder part 200 and rotates together with the shaft 300 through the protective cover 500 and the extension cover 510 installed to be exposed to the outside of the outer cylinder part 100. The outside air is sucked into the inner cylinder part 200, and the air sucked into the inner cylinder part 200 is discharged to the outside through the outflow duct part 710.

The cooling unit 700 as shown in FIG. 1 sucks outside air having a relatively lower temperature than the high temperature air passing through the outer cylinder portion 100 through the protective cover 500 that protects the belt 630, thereby allowing the inner cylinder portion ( By passing through the 200 to cool the heat transferred from the impeller 400 to the shaft 300, the second bearing portion 320 and the first bearing portion 310, the driven pulley 330, the belt 630, Through the rotation of the shaft 300 with respect to the first bearing portion 310 and the second bearing portion 320 is smooth, and the heat transfer to the belt 630 is blocked to deteriorate and damage the belt 630 It can be prevented to improve the life of the belt 630 and improve the operation reliability of the blower.

Meanwhile, as shown in FIG. 2, in addition to the protective cover 500 and the extension cover 510 through which the outside air flows into the second passage of the inner cylinder, an inlet duct 720 for introducing outside air into the second passage of the inner cylinder is provided. It may be further provided.

The inlet duct 720 is installed at the rear end side of the inner cylinder portion 200 corresponding to the outlet 120 from both sides in the longitudinal direction of the inner cylinder portion 200, and the second passage 201 of the inner cylinder portion 200. In communication with one side is installed in the inner cylinder portion 200, the other side is installed to be exposed to the outside of the outer cylinder portion 100 across the first passage (101).

As shown in FIG. 2, the cooling unit includes an inlet duct as well as a protective cover 500 and an extension cover 510 for protecting the belt 630 of the outside air having a lower temperature than the hot air passing through the outer cylinder part 100. By suctioning through 720 and passing through the inner cylinder part 200, the flow rate of the outside air passing through the inner cylinder part 200 is increased, so that the shaft 300, the second bearing part 320, and the first bearing part are removed from the impeller 400. Cooling the heat transmitted to the 310, driven pulley 330, belt 630 more effectively, through which rotation of the shaft 300 relative to the first bearing 310 and the second bearing 320 In order to prevent the heat from being transferred to the belt 630 and to prevent the belt 630 from being deteriorated and damaged, the life of the belt 630 can be improved and the operation reliability of the blower can be improved.

In addition, although not shown in the drawings, a guide vane may be further provided in the first passage between the outer cylinder portion and the inner cylinder portion. The guide vane prevents swirl flow on the inlet side by the rotation of the impeller, and smoothly flows the air to improve the blowing performance of the impeller.

Although the blower according to the present invention described above has been described with reference to the accompanying drawings, this is merely exemplary, and those skilled in the art may realize various modifications and other equivalent embodiments therefrom. Will understand.

Therefore, the true technical protection scope of the present invention should be defined only by the technical spirit of the appended claims.

1: blower
100: outer tube
101: first passage
110: inlet
120: outlet
200: inner tube
201: second passage
300: shaft
301: first shaft
302: second shaft
303: third shaft
305: auxiliary cooling fan
310: first bearing part
320: second bearing part
400: impeller
500: protective cover
501: hollow part
502: cover flange
510: extension cover
600: rotating drive part
610: drive motor
620: driving pulley
630: Belt
640: support
650: main frame portion
660: first support
670: second support
680 dustproof section
700: cooling unit
710: inlet duct
720: outflow duct part
730: cooling fan

Claims (5)

The first passage is formed along the longitudinal direction to allow the passage of hot air therein, and the air is discharged to the outside of the first passage and an inlet through which air is introduced into the first passage at both ends of the length direction. An outer cylinder portion formed with an outlet;
An inner cylinder portion spaced apart from the outer cylinder portion in the outer cylinder portion, and formed therein with a second passage separated from the first passage so as to allow the outside air to pass therethrough, and closed at both ends in the longitudinal direction;
A shaft rotatably installed inside the inner cylinder portion, one end of which is exposed to the outside of the inner cylinder portion, and a shaft having a driven pulley at the other end;
An impeller installed at the other end of the shaft inside the outer cylinder part and sucking hot air from the inlet side and discharging it to the outlet side;
The belt is coupled to the drive pulley coupled to the rotary shaft of the drive motor installed outside the outer cylinder portion and the pulley of the shaft to transfer the power of the drive motor to the shaft is exposed to the hot air passing through the inside of the outer cylinder portion And a protective cover extending to traverse between the inner cylinder part and the outer cylinder part so as to be prevented and formed to surround the belt.
The method of claim 1,
And a cooling unit for introducing external air into the second passage of the inner cylinder portion to cool the driven pulley and the belt and discharging the outside air to the outside of the second passage of the inner cylinder portion.
The method of claim 2,
The cooling unit
One side is installed in communication with the inner cylinder portion of the side opposite to the driven pulley, the other side is the outflow duct portion is installed to be exposed to the outside of the outer cylinder portion,
And a cooling fan which is coupled to the shaft inside the inner cylinder part and rotates together with the shaft to suck outside air from the protective cover side and discharge the outside air toward the outlet duct part side.
The method of claim 2,
The cooling unit
An inlet duct part and an outlet duct part installed on one side and the other side of the inner cylinder part so as to be in communication with the second passage of the inner cylinder part, and the other side of which is installed to be exposed to the outside of the outer cylinder part;
And a cooling fan which is coupled to the shaft inside the inner cylinder part and rotates together with the shaft to suck outside air from the protective cover or the inlet duct part and discharge the outside air to the outlet duct side.
The method of claim 1,
It has a support for supporting the drive motor,
The support unit is a blower, characterized in that for adjusting the distance between the drive motor and the outer cylinder to adjust the tension of the belt between the drive pulley and the driven pulley.

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