KR200286363Y1 - Step Type Stoker, Incinerator with the Same, and Grate for the Stoker - Google Patents

Abstract

The present invention relates to a staircase stocker having a drive unit for driving a moving grate for conveying waste, arranged on the side of the grate row, the grate for the stocker, and an incinerator having the stocker. Stepped stocker according to the present invention has a support bar extending in a direction orthogonal to the conveying direction of the waste and a plurality of grate arranged along the support bar, a plurality of stationary grate rows arranged stepwise along the conveying direction of the waste; Fixed forward and fixed position with a support bar extending in a direction orthogonal to the conveying direction of the waste and a plurality of grate arranged along the support bar, which are arranged stepwise so as to alternate with the stationary grate rows, being retracted to the bottom of the stationary grate row at the rear A plurality of moving grate rows movable back and forth between positions advanced to the top of the grate rows; And a driver for driving the moving grate trains.

Description

Step Type Stoker, Incinerator with the Same, and Grate for the Stoker

The present invention relates to a stocker type incinerator for incineration of waste such as municipal waste or industrial waste, and more particularly, to a staircase stocker in which a drive unit for driving a moving grate for transporting waste is disposed on the side of the grate row.

As is well known, a stocker type incinerator is widely used for incineration of waste material for municipal waste, industrial waste, and the like. In such an incinerator, the stocker is installed in the combustion chamber of the incinerator as a device for transporting the combusted waste. There are many kinds of these stockers, but staircase stockers are mainly used in which the fire grate is arranged in a cascade and the waste which is burned is gradually transferred along the stairs.

The staircase stocker is arranged such that the fixed grate fixed so as not to move and the moving grate driven by the drive mechanism are alternately arranged along the conveying direction or perpendicular to the conveying direction.

The lower side of the staircase stocker is provided with a device for receiving and treating the incineration generated by the combustion of the waste transported along the stocker, and a device for supplying the cooling air for burning the waste and cooling air for cooling the grate.

The waste introduced into the stocker is transported little by little along the stocker by the reciprocating movement of the mobile grate, and is dried and combusted while being transported by the supply of combustion air from the lower side of the grate. The remaining incineration ash is burned and thrown into the incineration ash processing unit below the stocker through the gap between the grate members.

However, these conventional stepped stockers have the following disadvantages.

First of all, in most stepped stockers, a drive mechanism for driving the moving grate to transport waste is located below the grate. Therefore, as the size of the incinerator increases, the size of the cylinder of the drive mechanism is inevitably increased and power transmission is unstable, so that the failure is frequent and the durability is weak. In addition, since the drive mechanism interferes with the incineration ash processing device and the combustion or cooling air supply device, the structure of the lower side of the stocker is complicated, and the design and maintenance of the stocker is difficult. Considering this point, a method of arranging the driving mechanism on the side of the grate has been proposed, but there is a disadvantage in that the power transmission method is too complicated.

In addition, since the grate is mostly fixed to the support means, there is a disadvantage in that a considerable time and effort is required to replace the grate. In addition, when the moving grate is adjacent to the side wall of the combustion chamber, the moving grate and the side wall of the combustion chamber interfere with each other and the combustion side wall is damaged. If not, if waste such as wire is caught between the moving grate and the combustion chamber, the foreign material may damage the combustion chamber sidewalls.

The present invention devised to solve these shortcomings aims to provide a stepped stocker that can simplify the power transmission structure and at the same time eliminate interference with other devices below the stocker.

In addition, the present invention has another object to provide a step stocker easy to replace the grate.

It is another object of the present invention to provide a stepped stocker which can prevent the side wall of the combustion chamber from being damaged.

Furthermore, another object of the present invention is to provide an incineration apparatus employing a stair stocker having the above characteristics.

Moreover, the present invention has yet another object to provide a stocker grate for easy replacement.

1 is a view showing an example of an incineration apparatus including a stair stocker according to an embodiment of the present invention.

Figure 2 is a perspective view of the grate removed from the stocker according to an embodiment of the present invention.

3 is an exploded perspective view showing in detail the part III of FIG.

4 is a cross-sectional view taken along the line IV-IV of FIG. 2;

FIG. 5 is a plan view illustrating a stalker according to an embodiment of the present invention shown in FIG.

6A and 6B illustrate a stepped stocker according to an embodiment of the present invention of FIG. 2,

6A is a side cross-sectional view showing a state in which the moving grate row is retracted to the retracted position;

6B is a side cross-sectional view showing a state in which the moving grate rows are advanced to the forward position.

FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. 6A; FIG.

8A and 8B illustrate the operation of the staircase stocker according to the embodiment of the present invention shown in FIG.

8A is a perspective view showing a state in which the moving grate train is retracted to the retracted position;

8B is a perspective view showing a state in which the moving grate train is advanced to a forward position.

9 is a perspective view showing a grate of the stalker according to an embodiment of the present invention.

10 is a perspective view showing the drop-off grate of the stalker according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

20: combustion chamber 40: stocker

100: fixed grate column 110: support bar

120: grate 130: support

140: support bracket 200: moving grate column

210: support bar 220: grate

280: Grate 290: Support Bar

300: driving unit 310: driving bar

320: driving lever 330: actuator (hydraulic cylinder)

350: connection member 360: link

400: dropping grate column 420: dropping grate

In order to achieve the above objects, according to one aspect of the present invention has a support bar extending in a direction orthogonal to the conveying direction of the waste and a plurality of grate arranged along the support bar, stepped along the conveying direction of the waste A plurality of stationary grate rows arranged; Fixed forward and fixed position with a support bar extending in a direction orthogonal to the conveying direction of the waste and a plurality of grate arranged along the support bar, which are arranged stepwise so as to alternate with the stationary grate rows, being retracted to the bottom of the stationary grate row at the rear A plurality of moving grate rows movable back and forth between positions advanced to the top of the grate rows; And a drive for driving the moving grate rows.

The support bar has a circular cross section and the grate extends forward of the support bar with a rear end formed with a concave recess formed upwardly to enclose the upper cross section of the support bar, the front end being a rectangular panel supported on the top of the grate in the front grate row. to be.

The stationary grate row is longer than the moving grate row at both ends corresponding to the width of one grate, and each side of the moving grate row supports one grate and the fixed bar remains fixed regardless of the forward and backward of the grate row. Each is installed.

The moving grate columns and the fixed grate columns are arranged in a row of support bars fixed parallel to the support bars of the grate rows, and in one or more drop grate columns having a plurality of drop grates arranged along the support bars and extending obliquely forward and downward from the support bars. By two or more groups having a predetermined drop.

The drive unit is installed to be rotatable back and forth in the conveying direction of the waste in the lower side of each moving grate row so as to be parallel to the support bar of each moving grate row, a plurality of drive bars connected to the support bar of the upper side of the moving grate row through a plurality of connecting members; A plurality of driving levers extending downward from one side of each driving bar; And a plurality of actuators for reciprocating each drive lever back and forth.

Preferably, the drive further has a link for connecting two or more drive levers, and the actuator is connected to the link to advance the drive levers by driving the link. The link is connected to a pair of link members that are opposed to each other so as to connect between lower ends of the drive levers, and a pair of link members and a link member that rotatably connects the drive lever and the pair of link members through the bottom of the drive lever. It has a pin and two pairs of lubrication free bearings respectively installed on both sides of the link members.

The drive bar has an extended end that extends out the sides of the grate rows, and the drive lever is secured to the extended end of the drive bar.

According to another aspect of the present invention there is provided a waste incineration apparatus comprising a stair stocker having the above configuration.

According to another aspect of the present invention rectangular body extending horizontally; A front side wall that is bent downward to be orthogonal to the main body at the front end of the main body and has at least one air hole through which air for incineration of waste passes; And a pair of sidewalls extending downward from both sides of the bottom surface of the main body, and having a recessed upwardly recessed portion formed to surround and surround the upper end of the circular support bar. The body has one or more protruding members formed at one edge such that a predetermined distance for air flow is maintained between adjacent grate.

In addition, according to another aspect of the present invention has a rear portion extending horizontally and the inclined portion extending inclined downward from the rear side to the inclined portion has a plurality of air holes are supplied with air for incineration waste; And a pair of sidewall gratings extending in a direction perpendicular to the main body at both sides of the bottom of the main body, and having a concave upwardly recessed portion formed to surround and surround the upper end of the circular support bar. The body has one or more protruding members formed at one edge such that a predetermined distance for air flow is maintained between adjacent drop blocking grate.

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

1 shows an incineration apparatus according to an embodiment of the present invention. The incinerator according to the present invention includes a waste input unit 10, a combustion chamber 20, an incineration ash processing unit 30, and a combustion and cooling air supply unit (not shown). Stepped stocker 40 according to an embodiment of the present invention is installed in the combustion chamber 20. The waste introduced through the input hopper 11 of the input unit 10 is supplied to the stocker 40 of the combustion chamber 20 by the input cylinder 13. The waste supplied to the stocker 40 is burned while moving little by little to the front and bottom by the stocker 40. The combustion and cooling air supply is supplied with air for cooling the grate and the air necessary for burning the waste. The burned incinerator falls to the incinerator ash hopper 31 of the incinerator ash processing unit 30 installed on the lower side of the stocker 100, is then transported to one place by the conveyor transport device 33, and then cooled and discharged.

2 is a perspective view showing the main part of the staircase stocker 40 according to an embodiment of the present invention. In FIG. 2, the grate is omitted for convenience of illustration, but referring to FIGS. 5 to 7, the overall configuration of the staircase stocker 40 according to an embodiment of the present invention will be clearly understood.

The staircase stocker 40 according to the embodiment of the present invention includes a fixed grate row 100, a moving grate row 200, and a driving unit 300.

The fixed grate row 100 has a support bar 110 and a plurality of grate 120 supported by the support bar 110. The support bar 110 is a member of a circular cross section extending in the direction orthogonal to the conveying direction of the waste, and is fixed to the support 42 on both sides of the combustion chamber 20 by the support 130 fixed to the lower side.

As shown in FIG. 9, the grate 120 has a rectangular main body 122 and a pair formed at both sides of the front wall 124 and the bottom surface of the main body 122 that are bent at right angles to the main body 122 in front of the main body 122. Has sidewalls 126. On the rear side of both side walls 126, recessed recesses 127 are formed. The diameter of the recess 127 is about the same as or slightly larger than the diameter of the support bar 110. The grate 120 is supported by the support bar 110 by placing the recess 127 to surround the upper semicircular cross section of the support bar 110. In addition, the front wall 124 of the grate 110 is formed with a pair of air holes 125 through which air for burning wastes flows. A pair of protruding members 123 is formed at one edge of the main body 122. In the state in which a plurality of grate 120 is supported on the support bar 110, adjacent grate 120 is spaced apart from each other by the protruding length of the protruding member 123, the gap between the spaced grate 120 Air is passed through to burn waste.

The moving grate row 200 also has a plurality of grate 220 supported on the support bar 210 and the support bar 210, like the stationary grate row 100. However, unlike the support bars 110 of the fixed grate row 100, the support bar 210 of the moving grate row 200 is not fixed to the stators 42 on both sides of the combustion chamber 20, and the driving unit 300 described later. It is supported so that back and forth movement is possible. In the cross-sectional shape, the support bar 210 of the moving grate row 200 is also circular, similar to the cross section of the support bar 110 of the stationary grate row 100. In the case of the grate 120, 220, the grate 220 of the moving grate column 200 and the grate 120 of the fixed grate column 100 have the same configuration.

The fixed grate rows 100 and the moving grate rows 200 are cascaded to alternate with each other (see FIG. 1). At this time, the grate 120, 220 of each row is maintained horizontally by placing the front end portion on the upper surface of the grate 220, 120 of the immediately preceding row. The foremost grate 120 is supported by a support (not shown) installed below it. The moving grate row 200 is a retracted position in which the grate members 220 of the moving grate row 200 are retracted to the lower part of the grate 120 of the fixed grate row 100 at the rear by a driving unit 300 to be described later. It may be reciprocated between forward positions advancing above the grate 120 of the forward fixed grate row 100.

Preferably, the fixed grate 280 is provided on both sides of the moving grate column 200. The fixed grate 280 is installed on both sides of the support bar 210 of the moving grate row 200 and is supported by the support bar 290 having a length corresponding to the width of one grate 220. As shown in FIG. 2, the support bar 290 is supported by a support bracket 140 extending forward from the lower end of the support 130 supporting the support bars 110 of the fixed grate row 100. have. Accordingly, the support bar 140 is maintained in a fixed state regardless of the forward and backward movement of the support bar 210 of the moving grate row 200. Preferably, the fixed grate 280 of this moving grate row 200 is aligned with the retracted position of the moving grate row 200. In addition, the length including the support bar 210 of the moving grate row 200 and the pair of support bars 290 supporting the fixed grate 280 on both sides of the support bar 210 is the length of the fixed grate row 100. It is the same as the length of the support bar (110).

Preferably, the cascading moving grate rows 200 and the fixed grate rows 100 are divided into two or more groups by one or more dropping grate rows 400 in the middle portion of the stairs.

The drop grate column 400 is a fixed grate column like the fixed grate column 100, and as shown in FIG. 10, the drop grate 420 has an inclined surface 422 inclined forward and downward to form another grate. It is distinguished from the grate 120 or 220 of the column 100 or 200. Three air holes 423 of the falling-block grate 420 are formed in the inclined surface 422, and the protruding member 425 is also formed in the side edge of the inclined surface 422. Since the falling-block grate train 400 is installed in the middle of the grate trains 100 and 200, the transport and distribution of the waste may be more smoothly performed. Preferably, the rearmost upper grate row of the stocker 40 receiving the waste introduced from the inlet 10 of the incineration device is composed of the dropping grate row 400.

On the other hand, the drive unit 300 is a component for supporting the support bar 210 of the moving grate row 200 and at the same time advance the moving grate row 200. The drive unit 300 includes a drive bar 310, a drive lever 320, and an actuator 330.

The drive bar 310 is installed in parallel with the support bar 210 on the lower side of the support bar 210 of the moving grate row 200, specifically slightly below the support bar 210 in the retracted position, and bearings. Both ends of the assembly 340 are rotatably supported by the stators 42 on both sides of the combustion chamber 40 to which the support bars 110 of the stationary grate rows 100 are fixed.

The drive bar 310 is connected to the support bar 210 of the moving grate row 200 through a plurality of connection members 350 (three in FIG. 2). As shown in FIG. 4, the connection member 350 includes a central pillar portion 352 and a reinforcement portion 354 attached to both sides of the pillar portion 352, and an upper end of the support bar 210. The bottom is welded to the bottom and the bottom is welded to the clamp 358 clamping the drive bar 310. 2 and 4, the horizontal reinforcement 356 is fixed to the bottom surface of the support bar 210 along the longitudinal direction of the support bar 210, and the connection member 350 is formed of the pillar portion 352. The upper end and the upper end of the reinforcement part 354 are fixed in such a manner as to be welded to three surfaces of the horizontal reinforcement 356. Accordingly, the support bar 210 and the connection member 350 may be more firmly fixed. Preferably, the drive bar 310 has a substantially rhombic cross section, whereby the clamping force of the clamp 358 can be enhanced.

In addition, one end of the drive bar 310 extends longer than the fixed or moving grate row, and the drive lever 320 extends downward from the extension 312 of the drive bar 310. Preferably, the driving lever 320 and the connecting member 350 are arranged to be in a straight line with each other.

The lower ends of the two driving levers 320 are connected by the link 360. The link 360 includes a pair of link members 362 facing each other on both sides of the drive lever 320, and accessories for hinge-engageing both ends of the link members 362 to the lower ends of the drive levers 320, respectively. It consists of

3 illustrates a coupling structure of the lower end of the driving lever 320 and the end of the link members 362. Circular through holes are formed at the lower end of the drive lever 320 and the ends of the link members 362, respectively, and the drive lever 320 and the link members 362 are provided by a hinge pin 364 penetrating the through holes. ) Is hinged. The other end of the hinge pin 364 is fitted with a fixing pin 365 penetrating the hinge pin 364 in a direction orthogonal to the axial direction of the hinge pin 364 to prevent the hinge pin 364 from being separated from the through hole. . Then, between the head of the hinge pin 364 and the link member 362, between the link members 362 and the lever member 320, and the fixing pin 365 of the link member 320 and the hinge pin 364 In total, four oilless bearings 366 are interposed. Meanwhile, although the driving lever 320 is illustrated and described as being connected by the link 360 in the present embodiment, three or more driving levers 320 may be connected to the link 360 as necessary.

The link 360 connecting the driving levers 320 is reciprocated in the front-rear direction by an actuator 330 connected to the rear end of the link 360. Preferably, actuator 330 is a hydraulic cylinder. The hydraulic cylinder 330 is fixed to the fixing table 42 provided on one side of the combustion chamber 40.

Referring to Figures 6a, 6b, 8a and 8b looks at the action of the staircase stocker 40 according to an embodiment of the present invention.

With the hydraulic cylinder 330 advanced, the moving grate row 200 is retracted to the retracted position, as shown in FIGS. 6A and 8A, where the grate 220 of the moving grate row 200 is rearward. It is a state accommodated below the grate 120 of the fixed grate row (100).

When the hydraulic cylinder 330 retreats in this state, the link 360 connected to the rod of the cylinder 330 is retracted along the rod. As the link 360 retreats, the drive lever 320 hinged to the link 360 pivots backward, and the drive bar 310 to which the drive lever 320 is coupled is also rotated along the drive lever 320. . Accordingly, the connecting member 350 fixed to the driving lever 320 pivots forward, and the support bar 210 fixed to the connecting member 350 and the grate 220 supported to the support bar 210 move forward. Is moved. 6B and 8B illustrate a state in which the support bar 210 and the grate 220 of the moving grate row 200 are moved to the forward position by this process.

When the grate 220 of the moving grate row 200 moves from the retracted position to the forward position, the waste placed in the fixed grate rows 100 is transferred to the moving grate row 200. Conversely, when the grate 220 of the moving grate row 200 moves from the forward position to the retracted position, the waste placed in the moving grate row 200 is transferred to the stationary grate row 100. Through this process, the waste injected into the upper side of the stocker is burned and gradually transferred to the front lower side.

On the other hand, even if the moving grate column 200 is moved back and forth, the fixed grate 280 provided at both ends of the moving grate column 200 is maintained in a fixed position in the retracted position. Accordingly, the side wall of the combustion chamber 20 is damaged or the stocker is damaged by the moving grate 220 and the combustion chamber sidewalls interfering with each other when the moving grate train 200 moves forward and backward, or the waste is trapped between the sidewalls of the grate 220 and the combustion chamber 20. The load on the 40 can be prevented. The waste placed on the fixed grate 280 is completely burned by the radiant heat of the refractory brick forming the side wall of the combustion chamber 20.

As described above, the staircase stocker according to the present invention does not interfere with the incineration material processing unit and the air supply unit disposed below the grate rows by the driving unit disposed at the sides of the grate rows. Therefore, the structure under the stocker is simplified, and the design and maintenance of the incinerator or stocker is also very simple. In addition, since the driving force is transferred to the moving grate train by the link structure, the power transmission structure is very simple, so that the driving unit is not easily broken and durability may be improved.

Moreover, the grate according to the present invention is simply placed on a circular support bar, so it is very easy to replace the grate. In addition, since the fixed grate is installed on both sides of the moving grate row, the moving grate does not interfere with the side wall of the combustion chamber, and waste does not get caught between the moving grate and the side wall so that the grate or the combustion side wall is not damaged.

In the above, the present invention has been shown and described with respect to certain preferred embodiments. However, the present invention is not limited only to the above-described embodiment, and can be variously changed without departing from the spirit of the technical idea of the present invention described in the utility model registration claims below. It will be apparent to those of ordinary skill in Esau.

Claims (13)

A plurality of stationary grate columns having a support bar extending in a direction orthogonal to the conveying direction of the waste and a plurality of grate arranged along the support bar, and arranged stepwise along the conveying direction of the waste; Position and front, which has a support bar extending in a direction perpendicular to the conveying direction of the waste and a plurality of grate arranged along the support bar, which are arranged stepwise to alternate with the stationary grate rows and retracted to the bottom of the stationary grate row at the rear. A plurality of moving grate columns movable back and forth between positions advanced to the top of the fixed grate columns of the plurality of moving grate columns; And And a means for driving said moving grate rows. The support bar of claim 1, wherein the support bar has a circular cross section, and the grate has a rear end formed with a concave recess formed upwardly so as to surround the upper cross section of the support bar, and the front of the support bar extends in front of the support grate row. Stepped stocker, characterized in that the rectangular panel is supported on the upper surface of the grate. 3. The stationary grate row of claim 2, wherein both ends of the fixed grate row are longer than the moving grate row by a length corresponding to a width of one grate, and both sides of the moving grate row support one grate and move forward and backward of the moving grate row. Stepped stalker, characterized in that each of the fixed bars are installed to remain fixed without. 3. The moving grate row and the fixed grate row according to claim 1 or 2, wherein the moving grate rows and the fixed grate rows are arranged along with the support bars fixed parallel to the support bars of the grate rows and inclined forwardly downward from the support bars. A stepped stocker, characterized in that it is divided into two or more groups having a predetermined drop by one or more dropping grate rows having a plurality of drop blocking grate. The method of claim 1 wherein the drive means A plurality of driving bars installed on the lower side of each of the moving grate rows so as to be rotated back and forth in a transporting direction of the waste so as to be parallel to the supporting bars of the respective moving grate rows, and connected to the support bars of the upper moving grate rows through a plurality of connecting members; A plurality of driving levers extending downward from one side of each driving bar; And Stepped stocker characterized in that it has a plurality of actuators for reciprocating the drive lever back and forth. 6. The staircase stocker according to claim 5, wherein the drive means further has a link for connecting two or more drive levers, and the actuator is connected to the link to advance the drive levers by driving the link. . The method of claim 6, wherein the link is a pair of link members that are opposed to be installed so as to connect between the lower sides of the drive levers, the pair of link members and the drive lever through the lower ends of the drive lever and the pair Stepped stocker characterized in that it has a connecting pin for rotatably connecting the link member of the, and two pairs of lubrication-free bearings respectively installed on both sides of the link member. 7. The staircase stocker according to claim 5 or 6, wherein the drive bar has an extended end extending outwardly of the sides of the grate rows, and the drive lever is secured to an extended end of the drive bar. In a waste incinerator comprising a stepped stocker, The cascade stalker A plurality of stationary grate columns having a support bar extending in a direction orthogonal to the conveying direction of the waste and a plurality of grate arranged along the support bar, and arranged stepwise along the conveying direction of the waste; Position and front, which has a support bar extending in a direction perpendicular to the conveying direction of the waste and a plurality of grate arranged along the support bar, which are arranged stepwise to alternate with the stationary grate rows and retracted to the bottom of the stationary grate row at the rear. A plurality of moving grate columns movable back and forth between positions advanced to the top of the fixed grate columns of the plurality of moving grate columns; And And means for driving said moving grate strings. A rectangular body extending horizontally; A front side wall which is bent downward to be orthogonal to the main body at the front end of the main body and has at least one air hole through which air for incineration of waste passes; And A grate for a stalker, comprising a pair of side walls extending downward from both sides of the bottom of the main body, and having a concave recessed upwardly to surround the top of a circular support bar. 11. The grate of claim 10, wherein the main body has one or more air guiding protrusions formed at one edge thereof so as to maintain a predetermined gap for air flow between adjacent grates. A main body having a rear portion extending horizontally and an inclined portion extending obliquely downward from the rear side and having a plurality of air holes through which the air for incineration of waste is supplied; And And a pair of sidewalls extending in a direction orthogonal to the main body on both sides of the bottom of the main body, and including a pair of sidewalls formed on the rear side thereof to concave upwardly to surround the upper end of the circular support bar. The drop grate of claim 12, wherein the main body has at least one air guiding protrusion formed at one edge thereof so as to maintain a predetermined distance for air flow between the adjacent drop blocking grate.