JPH045869Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to an improvement of the rostle (light lattice) of a dry distillation type incinerator for incinerating industrial waste, municipal garbage, etc.

[Conventional technology]

When industrial waste or urban garbage is incinerated on a rostol in a dry distillation type incinerator, a so-called clinker is formed on the top surface of the rostol, in which incombustible materials such as earth, sand, glass, and metals mixed in the dust are melted and condensed. will grow and accumulate, obstructing the combustion of dust.

Therefore, as a prior art, Japanese Utility Model Publication No. 26-2375 discloses that a plurality of roostle shafts are arranged in parallel to each other at the bottom of a combustion furnace so that they can each freely rotate independently. In addition, a rooster device has been proposed in which a large number of rooster arms projecting laterally from both left and right sides of the rooster shaft are provided at appropriate intervals in the axial direction of the rooster shaft.

Since each of the roostle shafts in the roostle device according to the prior art is configured to be independently rotatable, the roostle shafts each having a plurality of roostle arms can be rotated all at once, or By rotating only an arbitrary rostle shaft among the rostle shafts, it is possible to push up and crush the clinker that has grown on the top surface of the rostle device, and at the same time, the crushed clinker is allowed to fall from between the respective rostle shafts. Although it has the advantage of being able to do so, it also has the following problems.

[Problem that the invention attempts to solve]

In other words, in the prior art roost device, each rooster arm on each rooster shaft is configured to have a vertically long rectangular cross section, and the combustion material on the upper surface of the roaster arm falls from the gap between each rooster arm. In order to avoid
In other words, narrow the spacing between each lost arm,
Since each rooster shaft must be provided with a large number of rooster arms at narrow intervals, manufacturing thereof requires a great deal of labor and material, making it considerably expensive.

Moreover, due to the narrow spacing between the rostre arms, the thermal load on each rostre arm increases, and each rostre arm may bend or deform in the axial direction of the rostre shaft due to the heat, or may melt into the rostol arm. Losses may occur.

In addition, in this case, if the thickness of each rostle arm is increased in order to reduce the number of rostle arms and improve the durability of each rostle arm, the rotation of each rostle shaft will cause each rostle arm to When pushing up and crushing the clinker, each lostle arm comes into contact with the clinker over a wide area, resulting in a reduction in the performance of each lostle arm in pushing up and crushing the clinker.

The present invention overcomes this problem in the prior art.

[Means for solving problems]

For this reason, the present invention has a
A plurality of roistle shafts configured to be able to freely rotate independently are arranged parallel to each other at appropriate intervals, and a rooster arm that protrudes laterally from both left and right sides of the rooster shaft is attached to each of the rooster shafts. In a roistle device comprising a plurality of shafts provided at appropriate intervals in the axial direction, each roostle shaft is configured as a hollow shaft through which cooling water is passed, and each roostle arm in each of the roostle shafts is configured as a hollow shaft through which cooling water flows. is formed into a cross-shaped cross-section by a substrate substantially parallel to the axis of the rostle shaft and a rib plate substantially orthogonal to the axis of the rostle shaft, and the width dimension of the substrate and the height of the rib plate in each rostle arm are The diameter of the rotor arm is configured so that it gradually becomes smaller toward the tip of the lost arm.

[Effect]

In this way, the plurality of roostle arms provided on each roostle shaft are formed to have a cross-shaped cross section by a substrate substantially parallel to the axis of the rostle shaft and a rib plate substantially orthogonal to the axis of the rostle shaft. Since the substrate in each roistle arm can catch the combustion material, the distance between each roostle arm can be widened accordingly, and by rotating each roostle shaft, the clinker can be removed. When pushing up and crushing with each lostle arm, the rib plate of each lostle arm comes into contact with the clinker in a state of approximate line contact and pushes up the clinker, so the force is concentrated and the clinker is easily crushed. It is possible.

In addition, each rostre shaft is made hollow and cooling water is passed through it, while each rostre arm in each rostre shaft is formed with a cross-shaped cross section by a substrate and a rib plate. Not only can cooling be forcibly cooled by the cooling water flowing inside the shaft, but the surface area on the lower surface of each rostrum arm is increased to improve cooling by combustion air. By configuring the height dimension so that it gradually decreases toward the tip of the rostle arm, the heat received by each rostle arm can be smoothly transferred to the rostle shaft, which is constantly water-cooled. In conjunction with the improvement in the cooling performance of each lostle arm by the combustion air mentioned above,
This makes it possible to reliably avoid melting and damage of each lost arm.

Moreover, by making each rostre arm have a cross-shaped cross section with a substrate and a rib plate instead of just the substrate as in the prior art, the section modulus of the rostre arm can be improved in both vertical and horizontal directions. Therefore, it is possible to reliably prevent each lost arm from being bent and deformed due to heat.

[Effect of idea]

Therefore, according to the present invention, it is possible to very reliably crush the clinker that has grown into a plate shape on the upper surface of the rostle by rotating the rostle shaft with the rostle arm, and then drop it and remove it.

Since it is possible to widen the spacing between each roostle arm on the roostle shaft and reduce the number of roostle arms, it is possible to reduce the number of steps and materials required for manufacturing the roostle device, which makes it possible to provide the device at a low cost and to reduce its weight. can be achieved.

It is possible to prevent each roistle arm on each rooster shaft from melting and bending due to heat, and the durability of the rooster device can be significantly improved.

It has the following effects.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. In the drawing, 1 indicates a dry distillation type incinerator, 2 indicates an ash receiving hopper connected to the lower part of the incinerator,
A combustion air supply pipe 3 is provided in the ash receiving hopper 2.
is open.

At the bottom of the incinerator 1, a plurality of roostle shafts 4 whose axes are horizontal are arranged in parallel at appropriate intervals, and each roostle shaft 4 is connected to a gland portion for sealing at both ends. 10, 10 protrude outside the incinerator 1 and are rotatably supported by bearings 5, 5, and a lever 6 is fixed to the end of each of the rotor shafts 4 that protrudes outside the incinerator 1. Hydraulic or pneumatic cylinders 7 are connected to the tips of the levers 6, and the actuation of these hydraulic or pneumatic cylinders 7 moves each rotor shaft 4 to an appropriate upward angle (θ1) and an appropriate downward angle (θ2) across the horizontal line. The structure is configured to swing separately between the two.

A large number of rostle arms 8 projecting laterally from both left and right sides of the rostle shaft 4 are attached to each rostle shaft 4 in the incinerator 1 at appropriate intervals in the axial direction of the rostle shaft 4.
, a substrate 8a substantially parallel to the axis of the rostre shaft,
Rib plate 8b substantially orthogonal to the axis of the rostol shaft
The width dimension of the substrate 8a and the rib plate 8 in each rostre arm 8 are
The height dimension b is configured to gradually become smaller toward the tip of the lostle arm 8.

The left and right rooster arms 8, 8 on each roostle shaft 4 are divided into left and right halves, and can be attached to and detached from the roostle shaft 4 by fastening them to each other with bolts 9, 9 with the roostle shaft 4 in between. , and the mounting position with respect to the roostle shaft 4 is configured to be changeable in the axial direction of the roostle shaft 4, and each roostle arm 8 on each roostle shaft 4, 4 is the same for each roostle shaft as shown by a solid line in the drawing. They may be arranged in a staggered position or shifted by half a pitch as shown by the two-dot chain line in FIG.

Further, each of the rotor shafts 4 is formed in a hollow shape, and is configured such that cooling water enters the inside thereof through a pipe 11 and then flows out through a pipe 12.
Furthermore, each rooster shaft 4 has two keys 13 in the axial direction for preventing rotation of the rooster arm 8.
Articles are provided.

Since the air supplied into the ash receiving hopper 2 from the pipe 3 rises into the incinerator 1 from the space between the ash receiving hopper 2, the incinerated material is thrown into the incinerator 1. burns while resting on the upper surface of the substrate 8a in each losstle arm 8. In this case, by forming each rostre arm 8 into a cross-shaped cross section by the substrate 8a and the rib plate 8b, the surface area on the lower surface of each rostre arm 8 is increased, and the combustion air from the pipe 3 is spread over this large surface area. The heat received by each roostle arm 8 is removed by the cooling water flowing inside the roostle shaft 4 as the roostle arms 8 come into contact with each other. By configuring the width dimension of the rib plate 8a and the height dimension of the rib plate 8b to gradually become smaller toward the tip of the rostle arm 8, it is possible to improve heat transfer from each rostle arm 8 to the rostle shaft 4, As in the case where the width dimension of the substrate and the height dimension of the rib plate in each rostle arm 8 are the same width up to the tip of the rostle arm, both left and right ends of the substrate and the upper end of the rib plate at the tip of the rostle arm are locally This prevents the temperature from reaching high temperatures.

When the clinker grows during incineration, the clinker is pushed upward by the rib plate 8b of the rostle arm 8 by vertically swinging the rostle shaft 4 at a location directly below the clinker using the cylinder 7. Crush,
The ash falls into the ash receiving hopper 2 from the space between the respective loss arms 8 and is removed.

When it is not possible to crush the clinker by swinging this one rostle shaft 4, the two adjacent rostle shafts 4, 4 are swung in opposite directions, and the rostle arm of the two rostle shafts 4, 4 is rotated. All you have to do is put a clinker between 8 and 8 to crush it.

In addition, if the clinker cannot be removed by falling even with the above operation, the two roistle shafts 4, 4 adjacent to each other at the lower part of the clinker that cannot be removed may be rotated in the same direction. If the roistle arms 8, 8 are tilted parallel to each other as shown by the two-dot chain line in Fig. 6, an inclined gap will be created between them, so in this state, one or both of the roostle shafts can be slightly shaken. By rotating the clinker, the clinker can be dropped into the ash receiving hopper 2 from the inclined gap. teeth,
Although it is inclined as described above, the other roistle shafts 4 do not swing or rotate, so that the amount of incompletely burned materials falling can be controlled to a small level at the same time as clinker is being removed.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a longitudinal sectional front view, FIG. 2 is a sectional view taken from the side of FIG. 5 is an enlarged view of FIG. 2, FIG. 6 is a cross-sectional view of FIG. 5, and FIG. 7 is a cross-sectional view of FIG. 6. 1... Dry distillation incinerator, 2... Ash receiving hopper,
3...Combustion air supply pipe, 4...Rostle shaft, 5
... Bearing, 6 ... Lever, 7 ... Hydraulic or pneumatic cylinder, 8 ... Lost arm, 8a ... Substrate, 8b ... Rib plate.

Claims (1)

[Scope of utility model registration request] At the bottom of the dry distillation incinerator, a plurality of roostle shafts, each configured to be able to freely rotate independently, are arranged parallel to each other at appropriate intervals. In a rooster device in which a plurality of roostle arms protruding in the axial direction are provided at appropriate intervals in the axial direction of the roostle shaft, each roostle shaft is configured as a hollow shaft through which cooling water flows, and Each rostle arm in each rostre shaft is formed into a cross-shaped cross section by a substrate substantially parallel to the axis of the rostre shaft and a rib plate substantially perpendicular to the axis of the rostre shaft, and A rostle device for a dry distillation incinerator, characterized in that the width dimension of the substrate and the height dimension of the rib plate are configured to gradually become smaller toward the tip of the rostle arm.