KR100788803B1 - Vain damper of blower - Google Patents

Abstract

A blower vain damper is provided to service a vain damper bearing without disassembling an entire damper by forming a shaft and an integral connection shaft to be separable from each other. A vain damper blower includes an upper bearing assembly(200), a lower bearing assembly(300), a shaft(210), and an integral connection shaft. The upper bearing assembly includes a first bearing case bracket, a first bearing case, a bearing cover, and a first coupling member. The lower bearing assembly includes a second bearing case bracket, a second bearing case, and a second coupling member. One side of the shaft fits in the upper bearing assembly and the other side of the shaft extends with penetrating the lower bearing assembly. At least one or more bolt holes are formed in a lengthwise direction and a first key insertion groove is formed at the other side of the shaft. The integral connection shaft a shaft penetration hole in which the other side of the shaft fits in is formed in the integral connection shaft and a key second insertion groove is formed on an inner peripheral surface of the shaft in correspondence with the first key insertion groove.

Description

Vane Damper of Blower

The present invention relates to a vane damper of a blower. More specifically, among the components of the vane damper of the blower for supplying combustion air and the like to the boiler, the conventional upper bearing case includes an upper part including a first bearing case bracket, a first bearing case, a bearing cover, and a first fastening means. And a lever and an arm formed as a bearing assembly and formed with a lower bearing assembly including a second bearing case bracket, a second bearing case, and a second fastening means and integrally formed with a conventional shaft. It is formed of an integral connecting shaft formed of a body portion and an arm portion in which a key insertion groove is formed, and a first key insertion groove is formed on the other side of the shaft to insert a key into the first key insertion groove and the second key insertion groove, thereby integrally with the shaft. By making the connecting shaft detachable, it is possible to maintain the vane damper bearing without disassembling the entire damper. The vane damper of the blower can reduce the maintenance time by making it possible to reduce the maintenance cost.

In general, a boiler is provided with a blower for supplying combustion air to burn fuel, and such a blower is an air machine that obtains air volume and pressure by energizing air by a rotary motion of an impeller. A ratio of less than 1.1 is called a fan and a pressure ratio of 1.1 or more and less than 2.0 is commonly classified as a blower, which is collectively called a blower.

The blower is divided into centrifugal blower and axial blower according to the direction of the air and the angle formed by the impeller shaft.The centrifugal blower is a blower that generates air volume and pressure while the air is transferred in the radial direction of the impeller. Is a blower that transfers air in the same direction as the axial direction of the impeller, and is composed of a propeller-type impeller, and the blade of the impeller is airfoil.

Here, the axial blower again has no tube and is the simplest propeller blower among the axial blowers, the tube axial blower where the impeller is installed in the tube, and the vane axial blower equipped with vanes in the tube axial blower. Divided into the back.

Figure 1a is a partial cross-sectional view of the vane damper mounted to a conventional axial vane blower, Figure 1b is an assembled cross-sectional view of the upper bearing case of the vane damper component of Figure 1a, Figure 1c is a lower bearing case of the vane damper component of Figure 1a Assembly cross section.

1A, 1B and 1C, the vane damper of the blower is welded / fixed to the upper damper case 120, the lower damper case 130, and the upper damper case 120 connected to the duct 110. The upper bearing case 140, the lower bearing case 150 welded / fixed to the lower damper case 130, and the vanes 160 are coupled to each other by bolts, and the upper bearing case 140 and the lower bearing case 150. Both ends are supported is composed of a shaft 170 for adjusting the direction of the vane 160, a lever 195 formed integrally with the shaft 170 to adjust the rotation angle of the shaft 170, and the like.

The vane damper of the blower is a device for adjusting the flow rate of the air, such as the inflow or discharge by adjusting the angle of the vane, and is generally mounted on the axial blower.

The upper damper case 120 and the lower damper case 130 mean upper and lower portions of the damper case of the rectangular box shape, and thus the direction of the duct 110 may be changed depending on the installation place, so that the duct 110 is shown in FIG. 1A. ) And the upper damper case 120 and the lower damper case 130 is fixed with a bolt or the like.

The upper bearing case 140 includes a fixing part 133 fixed by welding (W) to the upper damper case 120 and a cover 131 coupled to the fixing part 133 by a bolt 137. The first bearing 139 is circumferentially formed at 133, and one end of the shaft 170 is fitted to the first bearing 139 so that the upper bearing case 140 supports the shaft 170.

The first washer 135 is mounted between the vane 160 and the upper bearing case 140, and the vane 160 is fixed to the shaft 170 by a bolt or the like to rotate together with the shaft 170.

The lower bearing case 150 is fixed by welding to the lower damper case 130, and a second bearing 151 is circumscribed therein, and the other end of the shaft 170 is fitted into the second bearing 151 so that the lower bearing case ( 150 supports shaft 170.

The second washer 137 is mounted between the vane 160 and the lower bearing case 150.

The lever 195 is an arm 196 which is integrally coupled with the shaft 170 and extends from the lever 195 at a portion where the other end of the shaft 170 extends out of the lower bearing case 150 and is exposed. As the operator rotates a handle (not shown) connected to the link device 190 in conjunction with the 190, the vane 160 is rotated by rotating the shaft 170 connected to the lever 195 and the arm 196. It is possible to control the rotation angle of the vane damper to control the flow of air, such as moving through.

In the vane damper of the conventional blower having such a configuration, the lower bearing case 150 in which the fixing portion 133 in which the first bearing 139 is circumferentially welded is fixed to the upper damper case 120, and the second bearing 151 is circumferentially mounted. ) Is fixed to the lower damper case 130 by welding, and the shaft 170 and the lever 195 are integrally formed to support the upper bearing case 140 and the lower bearing case supporting the shaft 170 of the vane damper. When the maintenance of the 150 and the like, it is necessary to disassemble the entire vane damper to perform maintenance, which requires a lot of work time.

In order to solve this problem, the present invention provides a conventional upper bearing case of a vane damper of a blower for supplying combustion air to a boiler, and includes a first bearing case bracket, a first bearing case, a bearing cover, and a first fastening means. A lever formed as an upper bearing assembly configured to include a lower bearing assembly including a second bearing case bracket, a second bearing case and a second fastening means and formed integrally with a conventional shaft. And the arm are formed of an integral connecting shaft formed of a body portion and an arm portion in which a second key insertion groove is formed, and a first key insertion groove is formed on the other side of the shaft to insert a key into the first key insertion groove and the second key insertion groove. The shaft and integral connecting shaft are formed so that the entire damper is not disassembled when servicing the bearings of the vane damper. It is an object of the present invention to provide a blower vane damper that can be serviced without maintenance, thereby reducing maintenance time and reducing maintenance costs.

In order to achieve the above object, the present invention provides a vane damper for controlling a flow rate of air, the first bearing case bracket being integrally fixed to an upper damper case and having at least one first fastening hole formed along a circumference thereof. A first bearing case having a portion inserted into a bearing case bracket, a first bearing having an inner circumference and having at least one second fastening hole formed therein, and a cover portion having a portion inserted into the first bearing case and recessed at one side thereof. An upper bearing assembly including a bearing cover having at least one third fastening hole formed along a circumference thereof, and first fastening means provided through the first fastening hole, the second fastening hole, and the third fastening hole; A second bearing case bracket which is integrally fixed to the lower damper case and has at least one fourth fastening hole formed therein, a part of which is inserted into the second bearing case bracket, the second bearing is inboard and at least one A lower bearing assembly including a second bearing case having a fifth fastening hole and a second fastening means provided through the fourth fastening hole and the fifth fastening hole; A shaft having one side fitted to the upper bearing assembly and the other extending through the lower bearing assembly, the shaft having one or more bolt holes formed in a longitudinal direction and having a first key insertion groove formed at the other side; And a shaft through hole into which the other side of the shaft is fitted, and a second key insertion groove is formed on an inner circumferential surface of the shaft to correspond to the first key insertion groove, and a key is formed in the first key insertion groove and the second key insertion groove. It provides a vane damper of the blower, characterized in that it comprises an integral connecting shaft which is formed to include a body that is inserted and extending from the body portion and the link connection hole is formed at one end.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

Figure 2a is an assembly view of the upper bearing assembly according to an embodiment of the present invention, Figure 2b is a plan view and a cross-sectional view of the first bearing case bracket according to an embodiment of the present invention, Figure 2c is a first bearing according to an embodiment of the present invention Top view and sectional view of a case, FIG. 2D is a top view and a sectional view of a bearing cover according to an embodiment of the present invention.

2A, 2B, 2C, and 2D, the upper bearing assembly 200 according to the embodiment of the present invention is integrally fixed to the upper damper case 120 and has one or more first fastening holes along the circumference. A part is inserted into the first bearing case bracket 220 and the first bearing case bracket 220 in which the 223 is formed, and the first bearing 139 has an inner circumference and at least one second fastening hole 233 along the circumference. ) Is formed in the first bearing case 230, the first bearing case 230 is a portion is inserted and the cover portion 244 is formed in one side and one or more third fastening holes (243) is formed along the circumference And a first fastening means 250 provided through the formed bearing cover 240, the first fastening hole 223, the second fastening hole 233, and the third fastening hole 243. The first bearing case 230 penetrates one side of the outer circumferential surface thereof to insert a first nipple insertion hole ( 236 may be formed, and a first nipple 237 may be inserted into the first nipple insertion hole 236.

In addition, the first oil seal mounting portion 235 may be formed on one side of the inner circumferential surface of the first bearing case 230, and the first oil seal 260 may be inserted into the first oil seal mounting portion.

The first bearing case bracket 220 is fixed to the upper damper case 120 by welding (W) as a hollow cylindrical shape, the first bearing case bracket 220 is inserted into the upper damper case 120 It consists of a first flange portion 221 exposed to the outside of the insertion portion 222 and the upper damper case 120 and formed of an outer diameter larger than the outer diameter of the first insertion portion 222.

The first fastening hole 223 is formed through the first flange portion 221 and the first insertion portion 222 along the circumference of the first flange portion 221.

In the exemplary embodiment of the present invention, the number of the first fastening holes 223 is illustrated, but the number of the first fastening holes 223 is not limited thereto, and three or less than five may be possible.

The first bearing case bracket 220 is integrally fixed to the upper damper case 120. As a fixing method, the contact portion between the first flange portion 221 and the upper damper case 120 is fixed as shown in FIG. 2B. Welding (W) may be preferred, but is not necessarily limited thereto.

The height of the first inserting portion 222 is formed in accordance with the thickness of the upper damper case 120, the outer diameter of the first inserting portion 222 is inserted into the first bearing case bracket insertion hole 225 of the upper damper case 120 The first insertion portion 222 is formed to be appropriately smaller than the diameter of the first bearing case bracket insertion hole 225 to be inserted smoothly.

The first bearing case 230 is a hollow cylindrical shape, a part of which is inserted into the first bearing case bracket 220, the first bearing 139 is circumferentially formed, and at least one second fastening hole 233 is formed along the circumference thereof. It is.

Here, a part into which a part is inserted into the first bearing case bracket 220 is the second insertion part 232 and the second fastening hole 233 is the second flange part 231 along the circumference of the second flange part 231. It is formed through.

At this time, the outer diameter of the second flange portion 231 is formed to be the same as the outer diameter of the first flange portion 221 of the first bearing case bracket 220, the second fastening hole 233 is the first fastening hole ( 223 is formed.

In the exemplary embodiment of the present invention, four second fastening holes are formed, but not necessarily limited thereto, and three or less or five or more second fastening holes may be provided corresponding to the number of the first fastening holes 223.

The first bearing mounting portion 234 is mounted with a first bearing 139, the first bearing 139 to be mounted is a sliding bearing, the depth of the first bearing mounting portion 234 is formed is the depth of the first bearing 139 It will depend on the height.

In addition, a first nipple insertion hole 236 may be formed in the first bearing case 230 by penetrating one outer circumferential surface of the first bearing case 230, and the first nipple insertion hole 236 may include a first bearing mounting part. And up to 234.

The first nipple 237 is inserted into the first nipple insertion hole 236 formed as above, and the nipple is a tool for injecting grease into the first nipple 237 and the first nipple insertion hole 236. The grease is injected into the first bearing mount 234 after the insertion into the first bearing 139.

The first oil seal mounting portion 235 is formed on one side of the inner circumferential surface of the first bearing case 230, and the first oil seal 260 is mounted on the first oil seal mounting portion 235.

That is, the first oil seal mounting portion 235 is formed on the opposite side of the portion where the first bearing mounting portion 234 of the first bearing case 230 is formed.

The first oil seal 260 is preferably formed of a rubber material, but is not necessarily limited thereto, and grease injected through the first nipple insertion hole 236 may be out of the first bearing case 230 along the shaft 210. It may be formed of various materials as long as it does not leak.

In addition, the diameter of the first oil seal mounting portion 235 may be determined according to the outer diameter of the first oil seal 260 to be mounted.

A part of the bearing cover 240 is inserted into the first bearing case 230, and a cover portion 244 formed in one side is formed, and at least one third fastening hole 243 is formed along the circumference of the bearing cover 240. It is.

A portion of the bearing cover 240 inserted into the first bearing case 230 is the third insertion portion 242 and the cover portion 244 is the third flange portion 241 from the third insertion portion 242. It is provided in a recessed shape.

The outer diameter of the third inserting portion 242 is appropriately smaller than the diameter of the first bearing mounting portion 234 so that it can be inserted into the first bearing mounting portion 234 smoothly.

The diameter of the third flange portion 241 is the same as the diameter of the second flange portion 231 of the first bearing case 230, at least one third fastening formed along the circumference of the third flange portion 241 The ball 243 is formed corresponding to the second fastening hole 233.

In the embodiment of the present invention, it is shown that four third fastening holes 243 are formed, but the present invention is not limited thereto, and three third fastening holes 243 may be formed in accordance with the number of the first fastening holes 223 and the second fastening holes 233. The following or five or more are also possible.

The first fastening means 250 is provided through the first fastening hole 223, the second fastening hole 233, and the third fastening hole 243, so that the first bearing case bracket 220 and the first bearing case ( 230 and the bearing cover 240 are fixed and coupled.

The first fastening means 250 is a bolt, but is not necessarily limited thereto, as long as the first fastening means 250 is fixed to the first bearing case bracket 220, the first bearing case 230, and the bearing cover 240. When the first fastening means 250 is selected as the bolt, the first fastening hole 223, the second fastening hole 233, and the third fastening hole 243 may be coupled to a thread by machining a thread. 1 process the thread only to the end portion of the fastening means 250 may be fixed by coupling the nut.

In addition, the number of the first fastening means 250 may be determined according to the number of the first fastening holes 223, the second fastening holes 233, and the third fastening holes 243 formed in the same number.

Figure 3a is an assembly view of the lower bearing assembly according to an embodiment of the present invention, Figure 3b is a plan view and a cross-sectional view of the second bearing case bracket according to an embodiment of the present invention, Figure 3c is a second bearing according to an embodiment of the present invention 3D is a cross-sectional view of the integrated connecting shaft according to the embodiment of the present invention.

As shown in FIGS. 3A, 3B, 3C, and 3D, the lower bearing assembly 300 is integrally fixed to the lower damper case 130 and has one or more fourth fastening holes 323 formed along the circumference thereof. A part is inserted into the second bearing case bracket 320 and the second bearing case bracket 320, and the second bearing 151 has an inner circumference and at least one fifth fastening hole 333 is formed along the circumference thereof. And a second fastening means 350 provided through the bearing case 330 and the fourth fastening hole 323 and the fifth fastening hole 333. The second bearing case 330 further includes an outer circumferential surface thereof. A second nipple insertion hole 336 is formed through the second nipple insertion hole 336, and a second nipple 337 is inserted into the second nipple insertion hole 336.

In addition, a second oil seal mounting part 335 may be formed on one side of the inner circumferential surface of the second bearing case 330, and a second oil seal 390 may be inserted into the second oil seal mounting part 335, and the second bearing may be inserted into the second bearing case 330. The first snap ring groove 338 may be formed on the other side of the case 330, and the first snap ring 340 may be mounted on the first snap ring groove 338.

In addition, the integrated connecting shaft 370 has a shaft through-hole 375 to be fitted to the other side of the shaft 210 and the second key insertion groove 374 is formed on the inner circumferential surface corresponding to the first key insertion groove 361. It is formed extending from the body portion 371, the body portion 371, the body portion 371 is inserted into the first key insertion groove 361 and the second key insertion groove 374, the link connection hole at one end It is comprised including the arm part 372 in which the 371 is formed.

The second bearing case bracket 320 is fixed in a hollow cylindrical shape by welding to the lower damper case 130, and the second bearing case bracket 320 is inserted into the lower damper case 130. ) And a fourth flange portion 321 exposed to the outside of the lower damper case 130 and having an outer diameter larger than the outer diameter of the fourth inserting portion 322.

The fourth fastening hole 323 is formed through the fourth flange portion 321 and the fourth insertion portion 322 along the circumference of the fourth flange portion 321.

Although the number of the fourth fastening holes 323 in the embodiment of the present invention is shown that four are formed is not necessarily limited to this, three or less or five or more are possible.

The second bearing case bracket 320 is integrally fixed to the lower damper case 130. As a fixing method, a contact portion between the fourth flange portion 321 and the lower damper case 130 is fixed as shown in FIG. 3B. Welding (W) is not necessarily limited thereto.

The height of the fourth inserting portion 322 is formed to match the thickness of the lower damper case 130, and the outer diameter of the fourth inserting portion 322 is inserted into the second bearing case bracket insert hole 325 of the lower damper case 130. The fourth inserting portion 322 is formed to be appropriately smaller than the diameter of the second bearing case bracket insertion hole 325 to be inserted smoothly.

The second bearing case 330 is a hollow cylindrical shape, a part of which is inserted into the second bearing case bracket 320, the second bearing 151 is circumferentially formed, and at least one fifth fastening hole 333 is formed along the circumference thereof. It is.

Here, a part into which a part of the second bearing case bracket 320 is inserted is the fifth insertion part 332 and the fifth fastening hole 333 is the fifth flange part 331 along the circumference of the fifth flange part 331. It is formed through.

At this time, the outer diameter of the fifth flange portion 331 is preferably formed to be the same as the outer diameter of the fourth flange portion 321 of the second bearing case bracket 320, the fifth fastening hole 333 is the fourth fastening It is preferably formed corresponding to the ball 323.

In the exemplary embodiment of the present invention, four fastening holes 333 are illustrated, but the present invention is not necessarily limited thereto, and three or five or more fifth fastening holes 333 may be formed corresponding to the number of the fourth fastening holes 323. .

The second bearing mounting portion 334 is mounted with a second bearing 151, the second bearing 151 to be mounted is a sliding bearing, the depth of the second bearing mounting portion 334 is formed of the second bearing 151 It depends on the height.

In addition, a second nipple insertion hole 336 is formed in the second bearing case 330 by penetrating one side of the outer circumferential surface of the second bearing case 330, and the second nipple insertion hole 336 is the second bearing mounting part 334. Will be formed up to).

A second nipple 337 is inserted into the second nipple insertion hole 336 formed as described above. After inserting the second nipple 337 into the second nipple insertion hole 336, the grease is inserted into the second bearing mounting portion 334. ), The grease is eventually injected into the second bearing 151.

The second oil seal mounting part 335 is formed at one side of the inner circumferential surface of the second bearing case 330, and the second oil seal mounting part 335 is mounted with the second oil seal 390.

That is, the second oil seal mounting portion 335 is formed on the opposite side of the portion where the second bearing mounting portion 334 of the second bearing case 330 is formed.

The second oil seal 390 is formed of a rubber material, but is not necessarily limited thereto, and the grease injected through the second nipple insertion hole 336 does not flow out of the second bearing case 330 along the shaft 210. It can be formed of as many materials as possible.

In addition, the diameter of the second oil seal mounting portion 335 will be determined according to the outer diameter of the second oil seal 360 to be mounted.

The first snap ring groove 338 is formed on the other side of the inner circumferential surface of the second bearing case 330, and the first snap ring groove 338 is mounted with the first snap ring 340.

That is, in order to prevent the second bearing 151 from being separated from the second bearing case 330 after the second bearing 151 is mounted on the second bearing mounting portion 334 of the second bearing case 330. 1 snap ring 340 is mounted.

The second fastening means 350 is provided through the fourth fastening hole 323 and the fifth fastening hole 333 to fix and couple the second bearing case bracket 320 and the second bearing case 330. .

The second fastening means 350 is preferably a bolt, but is not necessarily limited thereto, but may be any one as long as the second fastening means 350 can be fixed to the second bearing case bracket 320 and the second bearing case 330. In the case of selecting the second fastening means 350 as a bolt, a thread may be coupled to the inner circumferential surfaces of the fourth fastening hole 323 and the fifth fastening hole 333, and may be coupled to only a portion of the end of the second fastening means 350. The threads may be machined and the nuts may be combined and secured.

In addition, the number of the second fastening means 350 will be determined according to the number of the fourth fastening hole 323 and the fifth fastening hole 333 formed in the same number.

The integrated connection shaft 370 is composed of a body portion 371 and the arm 372, the shaft portion 371 is formed with a shaft through-hole 375 into which the other side of the shaft 210 is fitted, the first key on the inner peripheral surface A second key insertion groove 374 is formed corresponding to the insertion groove 361, and the key 360 is inserted into the first key insertion groove 361 and the second key insertion groove 374.

In addition, the arm portion 372 extends from the body portion 371 is formed long and a link connecting hole 373 is formed at one end thereof is connected to the link device 190.

The body part 371 and the arm part 372 may be separately manufactured and then welded, or may be manufactured separately by casting.

4 is a cross-sectional view of a shaft according to an embodiment of the present invention.

As shown in FIG. 4, one side of the shaft 210 according to the embodiment of the present invention is fitted into the upper bearing assembly 200 (see FIG. 2A) and the other side extends through the lower bearing assembly 300 (see FIG. 3A). One or more bolt holes are formed in the longitudinal direction, and the first key insertion groove 361 is formed at the other side.

In addition, a second snap ring groove 362 may be formed at one end of the shaft 210, and a second snap ring 380 (see FIG. 3A) may be mounted on the second snap ring groove 362.

The second snap ring 380 prevents the integral rotation shaft 370 (see FIG. 3D) from being separated from the shaft 210.

The shaft 210 is the same as the shaft 170 of the vane damper (see FIG. 1A), except that the first key insertion groove 361 and the second snap ring groove 362 are additionally formed.

Figure 5a is a cross-sectional view showing that the vane damper according to an embodiment of the present invention mounted on the damper case, Figure 5b is an assembled cross-sectional view of the upper bearing assembly according to an embodiment of the present invention, Figure 5c is an embodiment of the present invention Assembly cross section of the lower bearing assembly.

5A, 5B, and 5C, the vane damper according to the embodiment of the present invention will be described in brief with respect to the operation and maintenance process.

First, when the operator operates the link device 190 manually or automatically to adjust the flow rate of air or the like, the integrated connecting shaft 370 connected to the link device 190 rotates, and the integrated connecting shaft 370 rotates. Accordingly, the shaft 210 connected by the integrated connection shaft 370 and the key 360 rotates, so that the angle of the vane 160 fixed to the shaft 210 can be adjusted, thereby adjusting the flow rate of air or the like. Will be.

If the vane damper is continuously operated in this way, foreign substances such as dust accumulate in the upper bearing assembly 200 and the lower bearing assembly 300 such that the operator cannot precisely control the rotation angle of the vane 160.

Therefore, the operator must periodically disassemble the upper bearing assembly 200 and the lower bearing assembly 300 to remove foreign substances such as dust and check whether the first bearing 139 and the second bearing 151 are worn out. When the worker releases the first fastening means 250 in order to disassemble the upper bearing assembly 200, the bearing cover 240, the first bearing case 230, the first bearing 139, and the like may be removed from the first bearing case. Since it can be separated from the bracket 220, it is possible to easily remove foreign matters such as dust accumulated in the upper bearing assembly 200.

In addition, after removing the key 360 and the second snap ring 380 to fix the shaft 210 and the integrated connecting shaft 370 to disassemble the lower bearing assembly 300, the integrated connecting shaft 370 is removed from the shaft ( When the second bearing case 330 is separated from the second bearing case bracket 320 by separating the second fastening means 350 and the second fastening means 350, the foreign matter such as dust accumulated in the lower bearing assembly 300 can be easily removed. It can be removed.

In addition, when the first snap ring 340 provided on the other side of the inner circumferential surface of the second bearing case 330 is removed, the second bearing 151 may be separated from the second bearing case 330, thereby preventing the second bearing 151. The wear can be easily inspected.

In addition, a first nipple insertion hole 236 and a second nipple insertion hole 336 are formed in the first bearing case 230 and the second bearing case 330 so that the first nipple 237 and the second nipple ( The grease may be injected into the first bearing case 230 and the second bearing case 330 through the 337 to facilitate the grease injection.

The above description exemplarily illustrates the technical idea of the present invention, and those skilled in the art may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

1A is a partial cross-sectional view of a vane damper mounted on a conventional axial vane blower;

FIG. 1B is an assembled cross-sectional view of the upper bearing case of the vane damper component of FIG. 1A; FIG.

1C is an assembled cross-sectional view of the lower bearing case of the vane damper component of FIG. 1A;

2A is an assembly view of an upper bearing assembly according to an embodiment of the present invention;

2B is a plan view and a cross-sectional view of a first bearing case bracket according to an embodiment of the present invention;

2C is a plan view and a sectional view of a first bearing case according to an embodiment of the present invention;

2D is a plan view and a sectional view of a bearing cover according to an embodiment of the present invention;

3A is an assembled view of a lower bearing assembly according to an embodiment of the present invention;

3B is a plan view and a cross-sectional view of a second bearing case bracket according to an embodiment of the present invention;

3C is a plan view and a sectional view of a second bearing case according to an embodiment of the present invention;

3D is a cross-sectional view of the integral connecting shaft according to the embodiment of the present invention;

4 is a sectional view of a shaft according to an embodiment of the present invention;

Figure 5a is a cross-sectional view showing that the vane damper according to an embodiment of the present invention is mounted to the damper case;

5B is an assembled cross sectional view of the upper bearing assembly according to an embodiment of the present invention; And

5C is an assembled cross-sectional view of the lower bearing assembly in accordance with an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

110: duct 120: upper damper case

130: lower damper case 140: upper bearing case

150: lower bearing case 160: vane

170: axis 190: linkage

200: upper bearing assembly 210: shaft

220: first bearing case bracket 230: first bearing case

240: bearing cover 250: first fastening means

260: first oil seal 300: lower bearing assembly

320: second bearing case bracket 330: second bearing case

340: first snap ring 350: second fastening means

360: key 370: integral connecting shaft

380: second snap ring 390: second oil seal

Claims (13)

In the vane damper of the blower for adjusting the flow rate of air, A first bearing case bracket integrally fixed to the upper damper case and having at least one first fastening hole formed therein, a portion of which is inserted into the first bearing case bracket, the first bearing being circumferentially disposed at least one 2, a first bearing case having a fastening hole formed therein, a bearing cover having a portion inserted in the first bearing case and having a recessed cover portion formed thereon, and at least one third fastening hole formed along a circumference thereof; An upper bearing assembly including a first fastening means provided through a second fastening hole and the third fastening hole; A second bearing case bracket which is integrally fixed to the lower damper case and has at least one fourth fastening hole formed therein, a part of which is inserted into the second bearing case bracket, the second bearing is inboard and at least one A lower bearing assembly including a second bearing case having a fifth fastening hole and a second fastening means provided through the fourth fastening hole and the fifth fastening hole; A shaft having one side fitted to the upper bearing assembly and the other extending through the lower bearing assembly, the shaft having one or more bolt holes formed in a longitudinal direction and having a first key insertion groove formed at the other side; And A shaft through hole into which the other side of the shaft is fitted is formed, and a second key insertion groove is formed on an inner circumferential surface corresponding to the first key insertion groove, and a key is inserted into the first key insertion groove and the second key insertion groove. An integral connection shaft configured to include a body portion which is extended from the body portion and an arm portion having a link connection hole formed at one end thereof. Vane damper of the blower, characterized in that comprising a. The method of claim 1, The vane damper of the blower, characterized in that the first nipple insertion hole is formed through one side of the outer peripheral surface of the first bearing case. The method of claim 2, The vane damper of the blower, characterized in that the first nipple is inserted into the first nipple insertion hole. The method of claim 1, The vane damper of the blower, characterized in that the first oil seal mounting portion is formed on one side of the inner circumferential surface of the first bearing case. The method of claim 4, wherein The vane damper of the blower, characterized in that the first oil seal is inserted into the first oil seal mounting portion. The method of claim 1, The vane damper of the blower, characterized in that the second nipple insertion hole is formed through one side of the outer peripheral surface of the second bearing case. The method of claim 6, The vane damper of the blower, characterized in that the second nipple is inserted into the second nipple insertion hole. The method of claim 1, The vane damper of the blower, characterized in that the second oil seal mounting portion is formed on one side of the inner peripheral surface of the second bearing case. The method of claim 8, The vane damper of the blower, characterized in that the second oil seal is mounted to the second oil seal mounting. The method of claim 1, The vane damper of the blower, characterized in that the first snap ring groove is formed on the other side of the inner peripheral surface of the second bearing case. The method of claim 10, The vane damper of the blower, characterized in that the first snap ring is mounted in the first snap ring groove. The method of claim 1, The vane damper of the blower, characterized in that the second snap ring groove is formed at one end of the shaft. The method of claim 12, The vane damper of the blower, characterized in that the second snap ring is mounted to the second snap ring groove.

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