KR102057810B1 - Sealed structure of rotary kiln - Google Patents

Abstract

According to an embodiment of the present invention, a sealed structure of a rotary kiln comprises: a rotating structure (30) rotatably provided on a first fixed structure (10); a main supporter ring (100) disposed on the outer circumference of the rotating structure; a first sub supporter ring (120) disposed on the outer circumference of the rotating structure; a second sub supporter ring (130) disposed on the outer circumference of the rotating structure on a side opposite to the first sub supporter ring; a plurality of supporter brackets (200) installed at the outer circumference of the main supporter ring; a plurality of bolts (300) screwed through the supporter bracket; a plurality of springs (400) installed on the bolts to exert a restoring force in an expanding direction; a plurality of pushers (500) installed on the bolts such that a linear motion is free, and receiving the restoring force of the spring; first and second sealing units (610, 620) in close contact with the main supporter ring, the first sub supporter ring, the rotating structure, and the pusher; and third and fourth sealing units (630, 640) in close contact with the main supporter ring, the second sub supporter ring, the rotating structure, and the pusher. Thus, airtightness between the fixed structure and the rotating structure can be maintained.

Description

Sealed structure of rotary kiln

The present invention relates to a closed structure of the rotary kiln to block the flow of gas at the portion where the fixed structure and the rotating structure are coupled in the rotary kiln.

Rotary kilns rotate rotary kiln furnaces, create a high-temperature environment inside them, feed materials into rotary kiln furnaces, heat the materials to produce hot gases while firing and pyrolyzing, recycle the generated gases as chemical raw materials, It can be used for the downstream gas purification treatment.

Rotary kilns are provided with support portions on both sides, rotary kiln furnaces on both supports, and rotary kiln furnaces are rotatably installed.

Since the support is a fixed structure and the rotary kiln furnace is a rotating structure, the sealing structure and the rotating structure must satisfy both the sealing performance and the rotating performance.

On the other hand, when the outside air is mixed into the product gas, there is a problem that the purity of the product gas is lowered, so that the quality is low or the marketability is lowered, so that the sealing performance needs to be increased to block the inflow of external air in order to increase the purity of the product gas. .

In addition, in the case of pyrolysis kilns operated in an oxygen-free atmosphere, when external oxygen is introduced, there is a fatal concern such as the risk of blasting by reacting with flammable gas.

However, if the sealing performance is increased, the rotational performance may be weakened. On the contrary, if the rotating performance is increased, the sealing performance may be weakened.

In particular, the high temperature environment is difficult to implement a good sealing performance since deformation of the structure of the mechanical mechanism occurs, such as expansion.

In addition, the rotary kiln has a large rotary kiln furnace, particularly large, which is several meters in diameter, and is very heavy because it contains fireproof materials. Therefore, a part of the structure may be deformed due to thermal expansion due to characteristics of high temperature environment. Since the refractory material is filled in the fuselage member, the external shape of the rotary kiln furnace is difficult to form a precise circle.

KR 10-0239317 B1 KR 10-1273425 B1 KR 10-1207917 B1 KR 10-1902504 B1 KR 10-2018-0078103 A

Accordingly, an object of the present invention is to provide a sealed structure of a rotary kiln that improves the sealing performance between the fixed structure and the rotating structure when the rotary kiln furnace rotates and does not degrade the rotating performance. There is this.

Another object of the present invention is to provide a sealed structure of a rotary kiln, which enables to maintain a good sealing performance even if the external shape of the rotary kiln is not precisely rounded.

Seal structure of the rotary kiln according to an embodiment of the present invention for achieving the above technical problem,

A first fixed structure 10 installed in a stationary state;

A rotating structure (30) installed at a portion of the first fixing structure (10) to be inserted and rotated;

A main supporter ring (100) disposed on the outer circumference of the rotating structure (30) to have a gap with the rotating structure (30);

A first sub supporter ring (120) disposed on an outer circumference of the rotating structure (30) and fixed integrally with a portion of the first fixing structure (10) or the first fixing structure (10);

A second sub supporter ring (130) disposed on an outer circumference of the rotating structure (30) opposite to the first sub supporter ring (120);

A plurality of supporter brackets 200 installed around an outer circumference of the main supporter ring 100;

A plurality of bolts 300 which are screwed to penetrate the plurality of supporter brackets 200;

A plurality of springs 400 installed on the plurality of bolts 300 and acting restoring force in an extending direction;

A plurality of pushers 500, in which linear motion is freely installed on the plurality of bolts 300 and receiving a restoring force of the plurality of springs 400;

One side is in close contact with the side of the main supporter ring 100, the other side is in close contact with the side of the first sub supporter ring 120, the inner side is in close contact with the outer periphery of the rotating structure 30 First and second sealing units (610, 620) installed on the outer side and closely contacted to the plurality of pushers (500) to be arranged in multiple layers to perform a sealing function; And

One side is in close contact with the side of the main supporter ring 100, the other side is in close contact with the side of the second sub supporter ring 130, the inner side is in close contact with the outer periphery of the rotating structure 30 And third and fourth sealing units 630 and 640 disposed on the outer side to be in close contact with the plurality of pushers 500 and arranged in a plurality of layers to perform a sealing function.

In addition, in the sealed structure of the rotary kiln according to the embodiment of the present invention, a plurality of tabs 102 are formed on the outer circumference of the main supporter ring 100 with female threads, and a stud bolt is formed on each of the plurality of tabs 102. 104 is installed, and the plurality of supporter brackets 200 may be mounted on respective stud bolts 104 and fastened and fastened by nuts 108.

In addition, the sealed structure of the rotary kiln according to the embodiment of the present invention is provided in the same number as the number of the plurality of supporter brackets 200, disposed between the supporter brackets 200, the main supporter ring 100 It may include; spacer plate 106 is installed on both sides of the).

In addition, the sealed structure of the rotary kiln according to the embodiment of the present invention, the first sub supporter ring 120 or the second sub supporter ring 130 may be fixed to the spacer plate 106.

In addition, the sealed structure of the rotary kiln according to the embodiment of the present invention,

The supporter bracket 200 has a second fastening hole 204 formed therein, a female screw 210 is formed at one side of the second fastening hole 204,

The bolt 300 has a male screw 302 formed on an outer circumferential surface thereof, and a portion of the male screw 302 is processed into a polygon to form a bolt head 310 so as to rotate the bolt 300 using a driver tool. ,

The bolt 300 may be fastened to the female screw 210 through the second fastening hole 204.

In addition, the sealed structure of the rotary kiln according to the embodiment of the present invention,

The bolt 300 is formed to protrude on the outer peripheral surface of the flange (304) in close contact with the spring (400); A spring guide 306 formed on an opposite side of the male screw 302 based on the flange 304 to align the posture of the spring 400; And a center hole 308 formed through the center of the bolt 300 in the longitudinal direction thereof. Including,

The pusher 500 includes a shaft 502 that can move freely through the center hole 308; And a pad 504 installed at one end of the shaft 502 in contact with the first sealing unit 610 or the third sealing unit 630.

The spring 400 may be disposed between the spring guide 306 and the pad 504 to exert a restoring force in a direction in which the spring 400 extends.

In addition, in the sealed structure of the rotary kiln according to the embodiment of the present invention, the first and second sealing units 610 and 620 or the third and fourth sealing units 630 and 640 may be disposed in a plurality in a width direction. have.

In addition, the sealed structure of the rotary kiln according to an embodiment of the present invention, the main supporter ring 100 is formed with a flow path 140 to penetrate from the outer circumference to the inner surface, the lubricant is supplied through the flow path 140 It may be.

In addition, the sealed structure of the rotary kiln according to the embodiment of the present invention, the first to fourth sealing units (610 to 640) to maintain the physical properties and strength at a high temperature of 1000 ℃ or more, stretchable, easy to process ceramic It may be a material made by processing the fiber in the form of a rope.

Specific details of other embodiments are included in the detailed description and the drawings.

The sealed structure of the rotary kiln according to the embodiment of the present invention made as described above has a sealing unit between the fixed structure and the rotating structure, presses the sealing unit in the direction of the center of the rotary kiln furnace, the sealing unit is wide By not spreading in the direction, airtightness can be kept well between the fixed structure and the rotating structure.

In addition, the sealing structure of the rotary kiln according to an embodiment of the present invention, when pressing the sealing unit to the surface of the rotary kiln furnace, by dividing the circle evenly to implement the compression for each divided point, the outer circumference of the rotating structure Good rounding can be achieved even if the area is not round and certain portions are above or below the average surface height.

In addition, the sealed structure of the rotary kiln according to the embodiment of the present invention can maintain a good rotational performance by supplying lubricating oil between the sealing unit and the rotating structure.

In addition, the sealed structure of the rotary kiln according to the embodiment of the present invention, the lubricating oil supply position is disposed between the two cylinder units, so that the high temperature to the sealing unit without directly exposing the lubricating oil to the high temperature environment transferred between the fixed structure and the rotating structure Part of the heat can be blocked to delay the evaporation of the lubricating oil has the advantage of maintaining the rotational performance, equipped with an automatic lubricating oil supply device can always maintain a good lubricating surface to improve the airtight performance.

In addition, the sealing structure of the rotary kiln according to the embodiment of the present invention can further improve the sealing function by arranging the sealing units in a plurality of layers and by arranging the sealing units in a plurality of layers in a double manner.

1 is a view illustrating a rotary kiln to which a sealed structure of a rotary kiln according to an embodiment of the present invention is applied.
2 is a view for explaining the main components in the sealed structure of the rotary kiln according to an embodiment of the present invention.
3 and 4 are exploded views for explaining the main configuration in the sealed structure of the rotary kiln according to an embodiment of the present invention.
5 and 6 are a front cross-sectional view and a side cross-sectional view for explaining the sealed structure of the rotary kiln according to the embodiment of the present invention.
7 and 8 are a front cross-sectional view and a side cross-sectional view for explaining a sealed structure of a rotary kiln according to another embodiment of the present invention.
9 is a side cross-sectional view illustrating a sealed structure of a rotary kiln according to another embodiment of the present invention.
10 is a side cross-sectional view illustrating a sealed structure of a rotary kiln according to another embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention. Embodiments described below are shown by way of example in order to help understanding of the present invention, it will be understood that the present invention can be implemented in various modifications different from the embodiments described herein. However, if it is determined that the detailed description of the known functions or components related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description and the detailed illustration will be omitted. In addition, the accompanying drawings may be exaggerated in size of some of the components, rather than drawn to scale to facilitate understanding of the invention.

Meanwhile, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

On the other hand, the following terms are terms set in consideration of functions in the present invention, which may vary according to the intention or custom of the producer, and the definition should be made based on the contents throughout the present specification.

Like reference numerals refer to like elements throughout.

Hereinafter, a sealing structure of a rotary kiln according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6. 1 is a view illustrating a rotary kiln to which a sealed structure of a rotary kiln according to an embodiment of the present invention is applied. 2 is a view for explaining the main components in the sealed structure of the rotary kiln according to an embodiment of the present invention. 3 and 4 are exploded views for explaining the main configuration in the sealed structure of the rotary kiln according to an embodiment of the present invention. 5 and 6 are a front cross-sectional view and a side cross-sectional view for explaining the sealed structure of the rotary kiln according to the embodiment of the present invention.

First, the configuration of the rotary kiln will be briefly described. As shown in FIG. 1, the rotary kiln is disposed at a position where the first fixing structure 10 and the second fixing structure 20 are separated from each other, and the rotating structure 30 is the first fixing structure 10 and the second. The fixed structure 20 is installed to be rotatable. The rotating structure 30 may be a rotary kiln furnace.

The first fixing structure 10 may be configured in a form in which the first refractory material 12 is filled in the first kiln body 14. Similarly, the second fixing structure 20 may be configured in a form in which the second refractory material 22 is filled in the second kiln body 24. In addition, the rotating structure 30 may be configured in a form in which the third refractory material 32 is filled in the third kiln body 34, and may be formed in a cylindrical shape lying down as a whole.

The first fixing structure 10 may be provided with a burner installation part 40, and a burner may be installed at the burner installation part 40 to burn material.

The second fixing structure 20 may be provided with a material input unit 50, and may input a material for generating gas through the material input unit 50. The material may be a synthetic resin or the like that can be recycled.

The rotating structure 30 may have a circular rail 60 formed on an outer circumference thereof, and the circular rail 60 may be supported by a plurality of guide rollers. The plurality of guide rollers can be freely rotated, whereby the rotating structure 30 can be easily rotated with a plurality of guide rollers, even if heavy.

In addition, the rotating structure 30 may be provided with an electric element such as a chain sprocket 70 around the outer periphery, and may be connected to an electric motor and a chain to rotate the rotating structure 30.

The rotary kiln may be configured between the first fixed structure 10 and the rotary structure 30 of the sealed structure of the rotary kiln according to an embodiment of the present invention, and the same technique may be configured between the second fixed structure 20 and the rotary structure 30. Can be.

An embodiment of the closed structure of the rotary kiln according to the embodiment of the present invention describes the configuration (see section "A") between the first fixed structure 10 and the rotary structure 30, the second fixed structure 20 The configuration between the rotating structure 30 and the rotating structure 30 (see section “B”) may be redundant and will be omitted by those skilled in the art.

Hereinafter, the sealed structure of the rotary kiln according to the embodiment of the present invention will be described in detail.

The sealing structure of the rotary kiln according to the embodiment of the present invention, the main supporter ring 100, the first and second sub supporter ring (120, 130), the supporter bracket 200, the bolt 300, the spring 400, The pusher 500 and the first to fourth sealing units 610 to 640 may be configured to be included.

The first fixing structure 10 may be installed in a stationary state. The rotating structure 30 may be installed to be rotated by inserting a portion of the rotating structure 30 to overlap the first fixing structure 10.

That is, while the rotary structure 30 may rotate in the first fixed structure 10, a sealed state should be implemented such that gas cannot move from inside to outside or from outside to inside.

The main supporter ring 100 may be disposed to have a gap with the rotating structure 30 on the outer circumference of the rotating structure 30. The main supporter ring 100 may be provided in a flat circular shape.

The first sub supporter ring 120 may be disposed on an outer circumference of the rotating structure 30, may be formed as part of the first fixing structure 10, or may be formed with the first fixing structure 10. It can be fixed integrally.

That is, a physical space is excluded between the first sub supporter ring 120 and the fixed structure 10 so that gas cannot be naturally distributed.

The second sub supporter ring 130 may be disposed on an outer circumference of the rotating structure 30 on the opposite side to the first sub supporter ring 120. Meanwhile, the second sub supporter ring 130 may be fixedly installed on the first fixing structure through a separate spacer plate 106 so that the second sub supporter ring 130 may not be moved arbitrarily.

The supporter bracket 200 may be provided in plural and may be installed at an outer circumference of the main supporter ring 100. The plurality of supporter brackets 200 may be arranged in a circular shape on the main supporter ring 100, and may be arranged at equal intervals from each other.

The bolt 300 may be provided in plurality, and two may be knitted in a pair. One set of bolts 300 may be screwed to penetrate one supporter bracket 200.

The spring 400 may be provided in plural, two may be knitted into one set, and one set of springs 400 may be assigned to one supporter bracket 200. In addition, the spring 400 may be installed on all bolts 300, respectively, and may act as a restoring force in an extending direction.

The pusher 500 may be provided in plural, two may be knitted into one set, and one set of pushers 500 may be assigned to one supporter bracket 200. In addition, the pusher 500 may be installed on all bolts 300, the linear motion may be freely installed, and may receive the restoring force of the plurality of springs 400.

That is, the plurality of pushers 500 may be pushed by the restoring force of the spring 400, and may retreat when a force greater than the restoring force of the spring 400 acts in the opposite direction.

One side of the first and second sealing units 610 and 620 is in close contact with the side surface of the main supporter ring 100, and the other side is in close contact with the side surface of the first sub supporter ring 120. An inner side may be installed to be in close contact with the outer circumference of the rotating structure 30, and the outer side may be disposed to be in close contact with the plurality of pushers 500.

On the other hand, the number of the supporter bracket 200 and the pusher 500, etc. may be determined according to the size of the rotating structure 30, a plurality of equal intervals may be installed.

In addition, the first and second sealing units 610 and 620 may be arranged in multiple layers and perform a sealing function.

On the other hand, the first and second sealing units 610 and 620 are formed in a ring shape by rounding a band shape, as shown in FIG. 5, so that the first and second contact surfaces 612, 622). The first and second contact surfaces 612 and 622 may be obliquely formed, thereby contributing to suppressing the flow of gas.

In addition, as shown in FIG. 5, the first contact surface 612 and the second contact surface 622 may be disposed at positions that deviate from each other, thereby contributing to suppressing the flow of gas at the contact portion.

One side of the third and fourth sealing units 630 and 640 is in close contact with the side of the main supporter ring 100, and the other side of the third and fourth sealing units 630 and 640 is in close contact with the side of the second sub supporter ring 130. Sides may be installed to be in close contact with the outer circumference of the rotating structure 30, the outer side may be arranged to be in close contact with the plurality of pushers 500.

In addition, the third and fourth sealing units 630 and 640 may be arranged in multiple layers, and may perform a sealing function.

On the other hand, the third and fourth sealing units 630 and 640, like the first and second sealing units 610 and 620, as shown in FIG. The third and fourth contact surfaces 632 and 642 respectively have ends so that the ends overlap with each other. The third and fourth contact surfaces 632 and 642 may be obliquely formed, thereby contributing to suppressing the flow of gas.

In addition, as shown in FIG. 5, the third contact surface 632 and the fourth contact surface 642 may be disposed at positions that deviate from each other, thereby contributing to suppressing gas flow in the contact portion.

The sealed structure of the rotary kiln according to the embodiment of the present invention made as described above is provided with a plurality of sealing units (610 to 640) between the first and second fixed structures (10, 20) and the rotating structure (30). In addition, the plurality of sealing units 610 to 640 may be pressed in the center direction of the rotary kiln furnace, and the plurality of sealing units 610 to 640 may not be spread in the width direction, so that the first and second fixing structures 10, The airtightness can be kept well between 20) and the rotating structure 30.

In addition, the first to fourth sealing units 610 to 640 may be a material having physical properties and strength at a high temperature of 1000 ° C. or higher, and having elasticity. As a result, the sealed structure of the rotary kiln according to the embodiment of the present invention is stable in a high temperature environment and can maintain a better airtight performance.

In addition, the first to fourth sealing units 610 to 640 may be materials made by processing a ceramic fiber which is easy to process in a rope shape, and thus may be easily rolled in a round shape and installed in the kiln body.

In addition, the sealing structure of the rotary kiln according to an embodiment of the present invention, when pressing the plurality of sealing units (610 ~ 640) to the surface of the rotary kiln furnace, the circle can be divided evenly to implement compression for each divided point. .

In particular, even if the outer circumference of the circular structure 30 is not rounded and a certain portion is higher or lower than the average circle, the pusher 500 flexes and continuously presses the plurality of sealing units 610 to 640 on the surface of the rotary kiln furnace. It can be attached to realize a significantly improved sealing function than conventionally known techniques.

In addition, in the sealed structure of the rotary kiln according to the embodiment of the present invention, a plurality of sealing units 610 to 640 may be arranged in a plurality of layers, and a plurality of layers of sealing units may be arranged in a double manner to further restrict gas distribution. Can be blocked to further improve the sealing function.

On the other hand, as shown in FIG. 4, a plurality of tabs 102 may be formed with female threads around the outer circumference of the main supporter ring 100, and a stud bolt 104 may be formed at each of the plurality of tabs 102. Can be installed.

Two tabs 102 and one stud bolt 104 may be knitted in one pair, and one pair of tabs 102 and stud bolts 104 may be assigned to one supporter plate 200.

The plurality of supporter brackets 200 may be mounted to the respective stud bolts 104 and fastened and fastened by nuts 108.

More specifically, as shown in FIG. 4, the supporter bracket 200 may have a first fastening hole 202 formed therein, and the first fastening hole 202 to correspond to the two stud bolts 104. May be formed of two.

Meanwhile, the nut 108 is fastened to the stud bolt 104 exposed after being inserted into the first fastening hole 202 of the supporter bracket 200 by the stud bolt 104, and the nut 108 and the supporter bracket 200. Between the washer 110 and the spring washer 112 can be fitted.

In the sealed structure of the rotary kiln according to the embodiment of the present invention configured as described above, if a problem occurs among the dozens of pushers 500 arranged in the circumferential direction, the supporter bracket 200 may be disassembled and maintained at a specific position where the problem occurs. Can be.

On the other hand, the sealed structure of the rotary kiln according to the embodiment of the present invention can be configured to include a spacer plate 106, as shown in Figs.

The spacer plate 106 may be provided in the same number as the number of the supporter brackets 200, and may be disposed between the supporter brackets 200 and installed at both sides of the main supporter ring 100. Can be.

The spacer plate 106 may serve to divide the area so that the installation position can be easily identified with the naked eye when installing the supporter bracket 200 and the pusher 500 configuration, and an empty place is easily seen among dozens of installation positions. If the stand-up can be installed in the empty supporter bracket 200 and the pusher 500, etc. can increase the user's convenience.

In addition, the spacer plate 106 may contribute to reinforcing the structure rigidity of the main supporter ring 100.

In addition, the first sub supporter ring 120 or the second sub supporter ring 130 may be fixed to the spacer plate 106.

That is, the interval between the main supporter ring 100 and the first sub supporter ring 120 or the main supporter ring 100 and the second sub supporter ring 130 may be maintained at a specific width.

In addition, the spacer plate 106 may increase the convenience of the operator by preventing the first to fourth sealing units (610 to 640) sag when the first to fourth sealing units (610 to 640) are installed.

On the other hand, the supporter bracket 200 may be formed through the second fastening hole 204, the female screw 210 may be formed on one side of the second fastening hole 204. The female screw 210 may utilize a general nut, and may fix the nut to the supporter bracket 200 by welding or the like.

The bolt 300 may have a male screw 302 formed on an outer circumferential surface thereof. In addition, the bolt 300 may be a part of the male screw 302 is processed into a polygon, thereby rotating the bolt 300 using a general tool.

The bolt 300 may be fastened to the female screw 210 through the second fastening hole 204.

That is, the bolt 300 can be arbitrarily tightened or released by the user, thereby adjusting the tension of the spring 400, and determining the extent to which the bolt 300 is exposed to estimate the tension of the spring 400. have.

In addition, the bolt 300 may include a flange 304, a spring guide 306, and a center hole 308. The flange 304 may be formed to protrude on the outer circumferential surface of the bolt 300, it may be in close contact with the spring 400.

The spring guide 306 may be formed on the opposite side of the male screw 302 relative to the flange 304, the spring 400 is fitted to the spring guide 306 of the spring 400 You can align your posture.

The center hole 308 may be formed through the center of the bolt 300 in the longitudinal direction.

The pusher 500 may be configured by forming a pad 504 at the end of the shaft 502.

The shaft 502 may move freely through the center hole 308, and the pad 504 may be installed at one end of the shaft 502 to be the first sealing unit 610 or the third sealing unit. 630 may be contacted.

The spring 400 may be disposed between the spring guide 306 and the pad 504 to exert a restoring force in the extending direction.

On the other hand, the pad 504 may be formed in a curved shape, and the curvature may be provided in a size corresponding to the outer diameter of the first and third sealing units 610 and 630, whereby the first to fourth sealing units ( 610 ~ 640) can act more uniformly the pressure.

Hereinafter, a technique of supplying lubricating oil will be described with reference to FIGS. 7 and 8. 7 and 8 are a front cross-sectional view and a side cross-sectional view for explaining a sealed structure of a rotary kiln according to another embodiment of the present invention.

As shown in FIGS. 7 and 8, the main supporter ring 100 may have a flow path 140 formed to penetrate from an outer circumference to an inner surface thereof, and lubricating oil may be supplied through the flow path 140. In more detail, it is possible to install an automatic lubricant supply device in the flow path 140, and to continuously supply lubricant oil by the operation of the automatic lubricant supply device, thereby maintaining a good lubricating surface and improving airtight performance. have.

That is, the sealed structure of the rotary kiln according to the embodiment of the present invention, by supplying the lubricating oil between the second, fourth sealing units (620, 640) and the rotating structure 30, it is possible to maintain a good rotational performance.

In addition, the sealed structure of the rotary kiln according to the embodiment of the present invention, the lubricating oil supply position is disposed between the second sealing unit 620 and the fourth sealing unit 640, the first fixed structure 10 and the rotating structure Since the lubricant is not directly exposed to the high temperature environment transferred between the 30 and the high temperature heat is partially blocked by the second sealing unit 620, the performance of the lubricant may be delayed and thus the rotation performance may be delayed, thereby maintaining rotational performance. .

Hereinafter, an example in which the sealing unit is expanded will be described with reference to FIG. 9. 9 is a side cross-sectional view illustrating a sealed structure of a rotary kiln according to another embodiment of the present invention.

The first and second sealing units 610 and 620 or the third and fourth sealing units 630 and 640 may be arranged in plurality in succession in the width direction. Since the overall width of the sealing unit is disposed, the path through which the gas can travel is long, and the distribution of gas can be more strongly suppressed.

Hereinafter, with reference to FIG. 10, the example which makes a sealing unit expand and supplies lubricating oil is demonstrated. 10 is a side cross-sectional view illustrating a sealed structure of a rotary kiln according to another embodiment of the present invention.

In the sealed structure of the rotary kiln according to the embodiment of the present invention, the first and second sealing units 610 and 620 or the third and fourth sealing units 630 and 640 may be arranged in a plurality in succession in the width direction. The flow path 140 may be formed to penetrate from the outer circumference to the inner surface of the main supporter ring 100, and lubricating oil may be supplied through the flow path 140.

As a result, the sealed structure of the rotary kiln according to the embodiment of the present invention has a wider width of the sealing unit, so that a path through which the gas can move can be further suppressed and the flow of gas can be more strongly suppressed. ) Is not directly exposed to the high temperature environment transferred between the rotating structure 30 and the high temperature heat is partially blocked by the second sealing unit 620, thereby delaying the evaporation of the lubricant, which is advantageous in maintaining rotational performance. There is this.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. Could be.

Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is represented by the following claims, which are derived from the meaning and scope of the claims and their equivalent concepts. All changes or modifications should be construed as being included in the scope of the present invention.

The sealed structure of the rotary kiln according to the embodiment of the present invention can be used for a rotary kiln-type sealing apparatus such as calcining inorganic materials, incinerators, etc. by waste pyrolysis.

10, 20: first and second fixed structure 30: rotating structure
12, 22, 32: 1st to 3rd fireproof materials 14, 24, 34: 1st to 3rd kiln fuselage
40: burner mounting portion 50: material input portion
60: round rail 70: chain sprocket
100: main supporter ring
102: tab 104: stud bolt
106: spacer plate 108: nut
110: washer 112: spring washer
120, 130: first and second sub supporter ring 140: flow path
200: supporter bracket 202, 204: first and second fastening holes
210: female thread
300: bolt 302: external thread
304: flange 306: spring guide
308: center hole 310: bolt head
400: spring 500: pusher
502: shaft 504: pad
506: bracket
610, 620, 630, 640: first to fourth sealing units
612, 622, 632, and 642: first to fourth connection surfaces

Claims (9)

A first fixed structure 10 installed in a stationary state;
A rotating structure (30) installed at a portion of the first fixing structure (10) to be inserted and rotated;
A main supporter ring (100) disposed on the outer circumference of the rotating structure (30) to have a gap with the rotating structure (30);
A first sub supporter ring (120) disposed on an outer circumference of the rotating structure (30) and fixed integrally with a portion of the first fixing structure (10) or the first fixing structure (10);
A second sub supporter ring (130) disposed on an outer circumference of the rotating structure (30) opposite to the first sub supporter ring (120);
A plurality of supporter brackets 200 installed around an outer circumference of the main supporter ring 100;
A plurality of bolts 300 which are screwed to penetrate the plurality of supporter brackets 200;
A plurality of springs 400 installed on the plurality of bolts 300 and acting restoring force in an extending direction;
A plurality of pushers 500, in which linear motion is freely installed on the plurality of bolts 300 and receiving a restoring force of the plurality of springs 400;
One side is in close contact with the side of the main supporter ring 100, the other side is in close contact with the side of the first sub supporter ring 120, the inner side is in close contact with the outer periphery of the rotating structure 30 First and second sealing units (610 and 620) installed and having outer sides closely contacted to the plurality of pushers (500) and arranged in a plurality of layers to perform a sealing function; And
One side is in close contact with the side of the main supporter ring 100, the other side is in close contact with the side of the second sub supporter ring 130, the inner side is in close contact with the outer periphery of the rotating structure 30 A third and fourth sealing units 630 and 640 which are installed and have outer side surfaces in close contact with the plurality of pushers 500 and arranged in a plurality of layers to perform a sealing function;
The sealed structure of the rotary kiln comprising a.
The method of claim 1,
A plurality of tabs 102 are formed on the outer circumference of the main supporter ring 100 with female threads.
A stud bolt 104 is installed in each of the plurality of tabs 102,
The plurality of supporter brackets 200 are mounted to respective stud bolts 104 and fastened and fixed with nuts 108;
The sealed structure of the rotary kiln comprising a.
The method of claim 2,
A spacer plate 106 provided in the same number as the number of the supporter brackets 200 and disposed between the supporter brackets 200 and fixedly installed at both sides of the main supporter ring 100;
The sealed structure of the rotary kiln comprising a.
The method of claim 3,
Fixing the first sub supporter ring (120) or the second sub supporter ring (130) to the spacer plate (106);
The sealed structure of the rotary kiln comprising a.
The method of claim 1,
The supporter bracket 200 has a second fastening hole 204 formed therein, a female thread 210 is formed at one side of the second fastening hole 204,
The bolt 300 has a male screw 302 formed on an outer circumferential surface thereof, and a portion of the male screw 302 is processed into a polygon, so that the bolt head 310 is formed to rotate the bolt 300 using a general tool. ,
The bolt 300 is fastened to the female screw 210 through the second fastening hole 204;
The sealed structure of the rotary kiln comprising a.
The method of claim 1,
The bolt 300 is,
A flange 304 formed to protrude on an outer circumferential surface and in close contact with the spring 400;
A spring guide 306 formed on an opposite side of the male screw 302 based on the flange 304 to align the posture of the spring 400; And
And a center hole 308 formed through the center in the longitudinal direction of the bolt 300.
The pusher 500,
A shaft 502 that can move freely through the center hole 308; And
And a pad 504 installed at one end of the shaft 502 to contact the first sealing unit 610 or the third sealing unit 630.
The spring 400 is disposed between the spring guide 306 and the pad 504 to exert a restoring force in the direction of expansion;
The sealed structure of the rotary kiln comprising a.
The method of claim 1,
The first and second sealing units 610 and 620 or the third and fourth sealing units 630 and 640
Plurally arranged in the width direction;
The sealed structure of the rotary kiln comprising a.
The method according to any one of claims 1 to 3 or 7,
The main supporter ring 100 is a flow path 140 is formed so as to penetrate from the outer periphery to the inner surface, the lubricant is supplied through the flow path 140;
The sealed structure of the rotary kiln comprising a.
The method of claim 1,
The first to fourth sealing units (610 to 640),
A material made of a rope-shaped ceramic fiber which maintains physical properties and strength at a high temperature of 1000 ° C. or higher, and which is flexible and easy to process;
The sealed structure of the rotary kiln comprising a.

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