JP3746844B2 - Stair sliding stalker - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a stair sliding stalker applied to, for example, a waste incinerator, a sludge incinerator, an industrial waste incinerator, and the like.
[0002]
[Prior art]
Conventionally, as this kind of stair slide type stoker, for example, what is described in Japanese Utility Model Publication No. 6-84143 is known.
This is basically a fixed grate with an appropriate number of grate in the left and right direction and arranged in a staircase every other step in the front and rear direction, and a fixed number of grate in the left and right direction. The fixed grate is alternately arranged in the front-rear direction and is movable between the movable grate that is moved by a predetermined stroke in the front-rear direction, and the combustion air that is formed between each grate adjacent in the left-right direction is blown upward And an air jet port.
Thus, in such a case, as the movable grate is moved in the front-rear direction, the burning dust is transferred from the upper stage to the lower stage, and combustion air is supplied from the lower part of each grate. As these are cooled, they are ejected from each air outlet and enter the garbage.
[0003]
[Problems to be solved by the invention]
However, in such cases, incinerated ash, incompletely combusted materials, and non-combustible materials such as earth and sand (hereinafter simply referred to as ash) contained in the waste fall to the air outlet and cause clogging. However, the normal supply of combustion air is hindered, causing incomplete combustion of the garbage and uneven combustion, and the cooling of the grate is hindered to cause burning.
The present invention was devised in view of the problems described above, and the object of the present invention is to provide a stair-sliding stalker that prevents clogging of an air outlet. There is.
[0004]
[Means for Solving the Problems]
The stair slide type stoker according to the present invention basically has a movable main dynamic grate that is arranged every other side in the left-right direction and the front-rear direction and is moved by a predetermined stroke in the front-rear direction, and a movable main dynamic grate. The movable driven grate, which is alternately arranged in the left-right direction, is moved in the front-rear direction with a delay of a predetermined allowance, and the movable driven grate is alternately arranged in the front-rear direction to the fixed side. Fixed fixed immovable grate and fixed immovable grate are alternately arranged in the left-right direction, and movable main grate is arranged alternately in the front-rear direction. It is characterized by the fact that it is composed of a fixed driven grate that is moved only by a distance and an air outlet that is formed between each grate adjacent in the left-right direction and jets combustion air upward.
[0005]
The movable main grate is reciprocated by a predetermined stroke in the front-rear direction. The movable follower grate follows the movement of the movable main grate after a predetermined play allowance, and stops at a position delayed by a predetermined play allowance from the movable main grate. The fixed immovable grate does not move at all because it is fixed on the fixed side. When the movable driven grate moves, the fixed driven grate moves downward by a predetermined allowance when pressed from the upper stage, and moves by a predetermined allowance upward when pressed from the lower stage.
In other words, the adjacent movable main grate and the movable driven grate move while being shifted from each other, and the adjacent fixed immovable grate and the fixed driven grate are shifted from each other. The shape of the air outlet formed between the lattice and the movable driven grate and between the adjacent fixed immobile grate and the fixed driven grate is deformed.
For this reason, even if ash falls into the air outlet, it is subdivided by applying a force such as shearing or twisting to it, which makes it easier for the ash to fall downward, and the air outlet depends on the ash. It will not be blocked.
In short, the stair-sliding stoker has a self-cleaning function for blocking the air outlet due to ash.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view showing the stair sliding stoker according to the present invention when it is moving forward. FIG. 2 is a side view of FIG. FIG. 3 is a 3-3 side view of FIG. 1. FIG. 4 is a view similar to FIG. 5 is a side view of 5-5 in FIG. 6 is a side view of 6-6 in FIG. FIG. 7 is a perspective view showing a movable main dynamic grate or a fixed immobile grate. FIG. 8 is a bottom view of FIG. FIG. 9 is a perspective view showing a movable driven grate or a fixed driven grate. 10 is a bottom view of FIG. FIG. 11 is a perspective view showing a grate adjacent in the left-right direction when moving forward. FIG. 12 is a view similar to FIG. FIG. 13 is a plan view of a principal part showing a change in the shape of the air outlet.
[0007]
The stair-sliding stoker 1 includes a movable main driven grate 2, a movable driven grate 3, a fixed immovable grate 4, a fixed driven grate 5, an air outlet 6, and a discharge path 7. . The movable main grate 2 and the movable driven grate 3 form a movable grate, and the fixed immobile grate 4 and the fixed driven grate 5 form a fixed grate.
[0008]
The movable main grate 2 is disposed alternately in the left-right direction (the upper side in FIG. 1 is the left side) and the front-rear direction (the right side is the front side in FIG. 1), and is moved by a predetermined stroke A in the front-rear direction. In this example, the upper wall 8 is provided with a rear upper surface, a front upper surface having a slightly larger downward gradient, and a step formed between them, and a front wall suspended from the front wall 8 9 and the left and right side walls 10 which are vertically suspended from the left and right of the upper wall 8 and have a front V-shaped flat surface and are connected to the front wall 9, and are suspended from the left and right center of the upper wall 8 and extend to the vicinity of the front wall 9. A partition wall 11, side walls 10, a bottom plate 12 provided to close the lower half of the front half of the partition wall 11, an internal space 13 formed in the upper wall 8, the left and right side walls 10, the partition wall 11, and the bottom plate 12. The left and right external spaces 14 formed with the upper wall 8, the front wall 9, and the left and right side walls 10 and the front side of each side wall 10 are formed. The left and right apertures 15 that communicate the internal space 13 and the external space 14, and the left and right apertures that are cut across the front side of the upper wall 8 and the front wall 9 to communicate with the external space 14. Notches 16, left and right abutments 17 formed in the middle of each side wall 10, left and right semi-open holes 18 cut into the rear side of each side wall 10 and having a bay shape opened downward, It consists of left and right pin holes 19 for preventing lifting, which are drilled on the front side, and a so-called hollow grate having a lower half and a rear half opened. Thus, the movable main grate 2 is arranged in every other direction in the left-right direction, and is arranged in a staircase pattern in every other step in the front-rear direction, so that the half-open holes 18 are formed in the movable bar 20. The head is fitted so that it cannot move back and forth and can be raised and lowered. The movable bar 20 is provided at predetermined intervals in the front-rear direction and has a rail shape. The movable bar 20 is reciprocated by a predetermined stroke A in the front-rear direction depending on a drive device including a drive shaft and a drive rod that are not shown. ing. Stroke A is determined depending on the size and structure of the grate, and is determined as a length necessary for causing the dust to move from the appropriate upstream side (left side in FIG. 2) to the downstream side. In this example, it is 200 mm.
[0009]
The movable driven grate 3 is alternately arranged in the left-right direction with the movable main grate 2 and is moved with a predetermined play allowance B in the front-rear direction with respect to the movable main grate 2. In this example, It has substantially the same structure as the movable main grate 2, and includes an upper wall 21, a front wall 22, a side wall 23, a partition wall 24, a bottom plate 25, an internal space 26, an external space 27, an opening 28, a notch 29, a contact portion 30, The semi-opening hole 31 and the pin hole 32 are formed, and the semi-opening hole 31 and the pin hole 32 are formed longer in the front-rear direction than the semi-opening hole 18 and the pin hole 19 of the movable main dynamic lattice 2. Thus, the movable driven grate 3 is alternately arranged in the left-right direction with respect to the movable main grate 2, and the semi-open holes 31 are loosely fitted to the head of the movable bar 20 so as to be movable back and forth. . That is, a predetermined allowance B is formed between the half-open hole 31 of the movable driven grate 3 and the head of the movable bar 20. The allowance B is 5 to 20 mm, preferably 10 mm.
[0010]
The fixed immovable grate 4 is arranged alternately with the movable driven grate 3 in the front-rear direction and is fixed to the fixed side. In this example, the fixed immobile grate 4 has the same structure as the movable main grate 2, and the movable driven grate 4 The grids 3 are alternately arranged in the front-rear direction, and the semi-open holes 18 are fitted to the heads of the fixing bars 33 so as not to be able to move back and forth and to be lifted. The fixed bar 33 is provided at predetermined intervals in the front-rear direction, has a rail shape, and is fixed to the fixed side.
[0011]
The fixed driven grate 5 is alternately arranged in the left-right direction with the fixed immobile grate 4 and alternately arranged in the front-rear direction with the movable main grate 2, and has a predetermined play in the front-rear direction depending on the movable main grate 2. In this example, it has the same structure as the movable follower grate 3 and is arranged alternately with the fixed immovable grate 4 in the left-right direction and with the movable main grate 2 in the front-rear direction. Alternatingly arranged, the semi-open holes 31 are loosely fitted to the head of the fixed bar 33 so as to be movable back and forth and up and down. That is, a predetermined allowance B is formed between the half-open hole 31 of the fixed driven grate 5 and the head of the fixed bar 33.
[0012]
The air spout 6 is formed between each grate adjacent in the left-right direction and ejects the combustion air C upward. In this example, the movable main grate 2 and the movable follower grate adjacent in the left-right direction. 3 is formed by these notches 16 and 29, and is formed by these notches 16 and 29 between the fixed immovable grate 4 and the fixed driven grate 5 adjacent in the left-right direction. Yes.
[0013]
The discharge path 7 is formed in the movable driven grate 3 and the fixed driven grate 5 to discharge the ash D from the air outlet 6. In this example, the movable driven grate 3 and the fixed driven grate 5 It is formed by cutting the rear left and right sides of the upper wall 21 and the side wall 23 into a planar rectangular shape.
[0014]
Next, the operation will be described based on such a configuration.
As shown in FIGS. 1 to 3, when the movable bar 20 is advanced by a predetermined stroke A by the driving device, the following occurs. That is, the movable main grate 2 is moved forward together with the movable bar 20, and the foremost end (downstream side) thereof is at the position a. Even if the movable follower grate 3 is pushed out by the movable bar 20, its front end only reaches the position a 'with a delay of the allowance B. The difference between the position a and the position a ′ is a play allowance B. At this time, the movable main grate 2 has a shape in which the abutting portion 17 pushes the rearmost end (upstream side) of the fixed driven grate 5 downstream, and the fixed driven grate 5 has an allowance B so The fixed immovable grate 4 moves to a position b ahead of the front end position b ′. The difference between the position b and the position b ′ is a play allowance B. On the other hand, the movable driven grate 3 stops at a position delayed by a play allowance B from the movable main grate 2, and the position is just a position where the contact portion 30 contacts the rearmost end of the fixed immobile grate 4.
[0015]
As shown in FIGS. 4 to 6, when the movable bar 20 is retracted by a predetermined stroke A depending on the driving device, the following occurs. That is, the movable main grate 2 is immediately retracted together with the movable bar 20, and the movable driven grate 3 follows this. When the movable bar 20 reaches the retracted position, the rearmost end of the movable main grate 2 reaches the position c, but the rearmost end of the movable driven grate 3 reaches only the position c ′ due to the allowance B. do not do. When the movable main grate 2 moves backward, the movable main grate 2 pushes the abutment 30 of the fixed driven grate 5 upstream one stage depending on the rear end thereof, and pushes back until the rear end reaches the position d. This position d is a position pushed back by the allowance B in comparison with the position d ′ at the foremost end of the fixed immobile grate 4. On the other hand, the stop position c ′ at the rearmost end of the movable driven grate 3 is a position just in contact with the abutting portion 17 of the fixed immobile grate 4 upstream one stage.
[0016]
FIG. 11 shows a state in which the fixed driven grate 5 is pushed forward by the forward movement of the movable main dynamic grate 2 upstream to the fixed stationary grate 4, or the movable main dynamic grate 2 is most advanced. The state is shown in which the movable follower grate 3 is moved backward with a delay. FIG. 12 shows a state in which the fixed driven grate 5 is pushed most backward by the retraction of the movable main grate 2 on the downstream side relative to the fixed immobile grate 4, or the movable main grate 2 is It shows a state in which the movable follower grate 3 is most advanced and lags behind this. As is apparent from FIGS. 11 to 12, the air jet 6 changes as the movable main grate 2 and the movable driven grate 3 move in the front-rear direction. FIG. 13 shows changes in the shape of the air outlet 6.
[0017]
The combustion air C is supplied from the lower rear side of each grate 2 to 5 and is formed by the internal spaces 13 and 26 → the openings 15 and 28 → the external spaces 14 and 27 → the notches 16 and 29. 6 is ejected into the garbage, but if the ash D falls here, air ejection is inhibited. However, even if the ash D falls into the air jet port 6 due to the air jet port 6 changing in a complicated manner every time the movable grate 2 and 3 are reciprocated, forces such as shearing and twisting are applied thereto. It is subdivided depending on the situation, and by this, it is easy to disassemble and move and fall downward, and the air jet outlet 6 is prevented from being blocked. In short, this means that the air outlet 6 has a self-cleaning function.
[0018]
On both sides of the rear part (upstream side) of the movable driven grate 4 and the fixed driven grate 5, discharge paths 7 are formed by excision. Accordingly, for example, when the movable main grate 2 and the movable driven grate 3 reach the forward positions (the frontmost positions in FIG. 1 are a and a ′), the fixed immovable fire located at the upper stage thereof. The discharge path 7 of the movable driven grate 4 is located immediately below the air jet 6 formed between the grid 4 and the fixed driven grate 5. As a result, the ash D that has fallen into the air outlet 6 between the fixed grates 4 and 5 and has been easily sheared or twisted to fall downward is dropped directly below and automatically discharged. Similarly, when the movable main grate 2 and the movable driven grate 3 reach the retreat completion position (respective end positions c and c ′ in FIG. 4), the movable main grate 2 and the movable driven grate The discharge path 7 of the fixed driven grate 5 is located immediately below the air jet 6 formed between the grid 3. As a result, the ash D that has fallen into the air outlet 6 between the movable grate 2 and 3 falls directly below and is automatically discharged. In this way, every time the movable grate 2 or 3 makes a round trip, the air is discharged to the air jet 6 between the fixed grate 4 or 5 and directly below the air jet 6 between the movable grate 2 or 3. The path 7 appears and provides the moment when the ash D that has fallen into the air spout 6 is dropped under the stoker. In short, this means having an automatic discharge function of ash D.
[0019]
In addition, in the previous example, although the air jet nozzle 6 was formed in the front side of each grate 2-5, it is not restricted to this, For example, the middle etc. may be sufficient.
In the previous example, the discharge path 7 is formed on the rear side of each grate 2 to 5, but is not limited thereto, and may be, for example, the middle.
In the previous example, the discharge path 7 is formed by a notch. However, the discharge path 7 is not limited to this and may be formed by, for example, a hole.
The movable bar 20 and the fixed bar 33 are rail-shaped in the previous example, but are not limited thereto, and may be, for example, a columnar shape or a cylindrical shape.
[0020]
【The invention's effect】
As described above, according to the present invention, the following excellent effects can be obtained.
(1) Consists of a movable main grate, a movable driven grate, a fixed immovable grate, a fixed driven grate, and an air outlet. In particular, the movable main grate is moved in the front-rear direction with a predetermined allowance. Movable follower grate and a fixed follower grate that is moved by a predetermined play allowance in the front-rear direction depending on the movable main grate, so that the movable main grate and the movable follower grate can be moved in the front-rear direction. Along with this, the air spout formed between each grate is deformed, and the ash falling here is subject to shear, torsion, and other forces to break up or break up the mass, making it easy to fall, Clogging of the spout is prevented. That is, it can have a self-cleaning function of the air outlet. Accordingly, it is possible to avoid serious accidents such as burnout of the grate and incomplete combustion of the garbage, and it is possible to smoothly incinerate the garbage.
(2) The movable main grate is a movable driven grate that is moved in the front-rear direction by a predetermined allowance, and a fixed driven grate that is moved in the front-rear direction by a predetermined allowance by the movable main grate. Therefore, a dedicated drive device for moving them is unnecessary, which is extremely reasonable.
(3) When a discharge path for discharging ash from the air outlet is formed in the movable driven grate and the fixed driven grate, the ash that has fallen into the air outlet can be discharged below the stoker. In other words, it can have an automatic ash discharge function.
[Brief description of the drawings]
FIG. 1 is a plan view showing a stair slide type stalker according to the present invention when moving forward.
FIG. 2 is a side view of FIG.
3 is a 3-3 side view of FIG. 1;
FIG. 4 is a view similar to FIG.
5 is a side view of 5-5 in FIG. 4;
6 is a side view of 6-6 in FIG. 4;
FIG. 7 is a perspective view showing a movable main dynamic grate or a fixed immobile grate.
8 is a bottom view of FIG.
FIG. 9 is a perspective view showing a movable driven grate or a fixed driven grate.
10 is a bottom view of FIG. 9. FIG.
FIG. 11 is a perspective view showing when a grate adjacent in the left-right direction moves forward.
FIG. 12 is a view similar to FIG.
FIG. 13 is a main part plan view showing a change in the shape of the air outlet.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Stair-sliding stoker, 2 ... Movable main grate, 3 ... Movable follower grate, 4 ... Fixed immovable grate, 5 ... Fixed follower grate, 6 ... Air outlet, 7 ... Discharge path, 8, 19 ... upper wall, 9, 20 ... front wall, 10, 21 ... side wall, 11, 22 ... partition wall, 12, 23 ... bottom plate, 13, 26 ... inner space, 14, 27 ... outer space, 15, 28 ... opening , 16, 29 ... Notch, 17, 30 ... This part, 18, 31 ... Semi-open hole, 19, 32 ... Pin hole, 20 ... Movable bar, 33 ... Fixed bar, A ... Stroke, B ... Play allowance, C ... Combustion Air, D ... ash, a, a ', b, b', c, c ', d, d' ... position.

Claims (1)

Movable main grate that is arranged in the left and right direction and every other direction and moved by a predetermined stroke in the front and rear direction, and the movable main grate are alternately arranged in the left and right direction, and the movable main grate is front and rear A movable driven grate that is moved in the direction delayed by a predetermined allowance, a movable driven grate alternately arranged in the front-rear direction, and a fixed immovable grate fixed to the fixed side, and a fixed immobile grate Alternately arranged in the left-right direction and movable main grate is arranged in the front-rear direction and is adjacent to the fixed driven grate that is moved by a predetermined allowance in the front-rear direction by the movable main grate. An air outlet that is formed between each grate and ejects combustion air upward, and forms a discharge path for discharging ash from the air outlet in the movable driven grate and the fixed driven grate. , Whenever the movable grate reciprocates Stairs beneath portion to the discharge path appears and wherein the dropping depressed ash such an air ejection port under stoker sliding stoker.

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