JPS5824720A - Staged type hollow stoker - Google Patents

Abstract

PURPOSE:To burn a material to be burnt completely by uniformly sending air into the stoker and successively advancing the material to be burnt, etc. CONSTITUTION:Approximately U-shaped air flowing cavities 19 are formed into hearths 1 or 2 and U-shaped frames 3, uniform air is forwarded into the stoker, and the fixed hearths 2 and the movable hearths 1 are arranged alternately. The hearths 1 are given sliding motion by means of a hydraulic cylinder 1 through rods 4 fixed to the hearths 1 and a link 5 axially supported to a shaft 6, and the material to be burnt A is advanced succssively. Accordingly, the condition of combustion having high uniformity can be held because air is equally supplied into the stoker and the material to be burnt A, etc. are advanced successively.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a step-type hollow stoker that is equipped with both a feeding mechanism for combustible material and a uniformly distributed air supply mechanism.

The ideal characteristic of a combustion stoker for a garbage incinerator is that even though the combustible materials are composed of miscellaneous components, they are all combusted and sent in an orderly manner so that only ash and non-combustible materials reach the discharge port. It is.

The stove according to the present invention has air supply tuyere uniformly on the surface of the fire bed, thereby making the supply of air uniform. Furthermore, the stoker according to the present invention has a mechanism that sequentially transports burnable materials, ash, etc. at a uniform speed by alternately arranging a fixed fire bed and a movable fire bed to provide relative motion. The present invention will be explained in detail below with reference to the drawings.

FIG. 1 is a perspective view of a stepped hollow stoker according to an embodiment of the present invention. There are five fire beds arranged in parallel along the inclined surface, and among these, the movable fire bed 1 slides along the sliding surface 10.

The movable grate 1 and the fixed grate 2 alternately arranged in parallel do not undergo such a sliding movement. A U-shaped frame 3 is fitted below these fire beds 1 and 2.
An air circulation cavity 19 is formed between them, as shown in the sectional view of FIG. \Slide 15 on the bottom of the U-shaped frame 3
is installed vertically and is in contact with the sliding surface 10. In the case of the movable grate 1, the slide 15+ is slid on the sliding surface 10,
In the case of a fixed grate 2, both are fixed.

The sliding movement of the movable grate 1 is provided, for example, by a hydraulic cylinder 7 through a rod 4 fixed to the grate 1 and a link 5 pivotally supported by a shaft 6.

That is, when the rod of the hydraulic cylinder is shortened, the link 5 rotates forward, and the movable grate 1 is pushed out in the direction of arrow X. When the rod of the hydraulic cylinder 7 is extended, the movable grate 1 is retracted.

The fire bed is formed into a step-like shape, and a raised box 11 is provided at the center of the upper surface 14 of the fire bed. The grate side surfaces 13 are in sliding contact with the neighboring grate. Furthermore, four pairs of air tuyeres 12 are bored on both sides of the ridged box 11.

FIG. 2 is a partial side sectional view of the fire bed, and FIG. 3 is a partial front enlarged sectional view of the fire bed. A indicates combustible parts, ash, non-combustible materials, etc. As mentioned above, the grate 1 or 2 and the U-shaped frame 3 form an approximately white-shaped air circulation cavity 19 therein. Air passes through this circulation cavity 19 through air tuyeres provided at each stage. It blows out from 12 into the furnace.

Reference numeral 8 designates flexible hoses, one of which is connected to each fire bed 1.2, and the other end of which is connected to a common air duct 9. Air flows from the air duct '9 as shown by arrow 2.
The air flows into the air circulation cavity 19 formed by the fire beds 1 and 2 and the frame 3, and is uniformly supplied into the furnace through the air tuyeres 12.

The reason why the air tuyere 12 is arranged on the side surface of the convex box 11 is to prevent the combustible material A from clogging the tuyere 12 or invading into the circulation cavity 19 from the tuyere 12. be.

FIG. 4 is a plan view showing the progress of the combustible material A. FIG. Since the movable grate 1 repeats forward and backward movements, the combustible materials A gradually advance.

In the step-type hollow stoker according to the present invention, since air is uniformly provided inside the stoker and the combustible materials A are sequentially advanced, a highly uniform combustion state can be maintained, and the incineration of the furnace Efficiency also improves dramatically.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a stepped hollow stoker according to an embodiment of the present invention, Fig. 2 is a partial side sectional view thereof, Fig. 3 is a front sectional view of one grate unit, and Fig. 4 is a combustible material. It is a top view showing the progress state of. 1 is a movable fire bed, 2 is a fixed fire bed, 3 is a frame, 4 is a rod, 5 is a link, 6 is a shaft, 7 is a hydraulic cylinder, 8
9 is a flexible hose, 9 is a common air duct, 10 is a sliding metal moving surface, 11 is a convex strip box, 12 is an air tuyere, 1
3 is the side surface of the fire bed, 14 is the top surface of the fire bed, 15 is the slide, and 19 is the air circulation cavity.

Claims (1)

[Claims] A fire bed with protruding boxes 11 with air tuyeres 12 perforated on its sides is placed on the U-shaped frame 3 to form a stepped fire grate, and the fire grate is alternately connected to the movable fire bed. 1 and a fixed fire bed 2, and a flexible hose 8 for supplying combustion air is connected to the U-shaped frame 3 of each fire grate,
A sliding mechanism is connected to the movable grate 1 and a sliding surface 1 is connected to the movable grate 1.
A stair-type hollow stoker characterized by being configured to slide horizontally on the ground.