JP2733902B2 - Incinerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incinerator for refuse such as building waste, food waste, paper waste and the like that have been crushed in advance.

[0002]

2. Description of the Related Art Conventionally, as this kind of incinerator, a trash inlet is provided at one end of a horizontally long furnace, and a discharge port is provided at the other end.
There is known a structure in which a burner and a blower for blowing air are provided, and a feed screw for feeding refuse introduced into a furnace is fed inside a furnace.

[0003]

However, in the above-mentioned conventional furnace, even if the surface of the refuse is burned, the surface of the refuse often remains unburned or incompletely burns. Since both incombustibles are discharged from the discharge port, there is a disadvantage that they need to be separated after discharge. An object of the present invention is to eliminate the disadvantages of the conventional furnace.

[0004]

As means for solving the above-mentioned problems, the present invention relates to a grate for ash removal on a peripheral wall, a dust introduction port communicating with a dust carrying cylinder at one end, and a non-combustible substance discharge at the other end. The cylindrical combustion furnace having the outlets opened is supported so as to be rotatable about the axis with the axis lying sideways, and the refuse carry-in cylinder is further connected to a trash input hopper on one end upper surface to remove refuse. A rotatable and rotatably supported ribbon blade to be conveyed into the combustion furnace is installed, and on the inner peripheral surface of the combustion furnace,
A trash agitating transfer blade for stirring and transferring garbage to the incombustible discharge port during rotation of the combustion furnace is provided so as to protrude therefrom, and the outside of the combustion furnace is surrounded by a cover at appropriate intervals to collect ash and smoke. Forming an ash outlet at an appropriate lower portion of the cover, a smoke outlet at an upper end portion, and an incombustible material outlet at a lower portion of discharge from the incombustible material outlet of the combustion furnace. A screw blade for ash transfer is projected on the outer peripheral surface of the combustion furnace to transfer ash to the ash dropper, and a burner for emitting combustion flame and a blower for blowing air into the combustion furnace are provided. Suggest an incinerator.

[0005]

[0006] The "ash transfer means" in the present invention includes a combustion furnace having screw blades projecting from the outer peripheral surface thereof, a screw conveyor disposed below the combustion furnace, and a scraper disposed below the combustion furnace. There are various types such as endless chain conveyors.

An embodiment of the present invention will be described below with reference to the drawings using a gas burner in addition to an oil burner such as heavy oil for the burner.

[0008]

1 and 2, a closed cylindrical outer cover (1) is supported on a floor (F) by supporting legs (2). In addition, a closed cylindrical inner cover (3) having a smaller diameter and a shorter axial length is supported concentrically with a space between both ends, whereby both covers (1), (3) ), A preheating chamber (4) having an annular cross section is formed therebetween, and a cylindrical combustion furnace (5) having a smaller diameter than that of the inner cover (3) and both ends opened in the inner cover (3), and communicating with one end of the combustion furnace. A concentrically supporting cylindrical waste carrying cylinder (6) having a slightly smaller diameter than that of the inner covering (3) and the combustion furnace (5) and the carrying cylinder (6). An ash collecting and smoke collecting chamber (7) is formed.

The combustion furnace (5) has the following structure. Bearing stands (8) and (8) are erected on floors (F) at both ends outside the outer cover (1), and both stands are rotated around the axis of the inner and outer covers (3) and (1). The three shafts (10) ..., (10) ..., which rotatably support both ends of a hollow shaft (9) that is freely passed vertically, and extend four by four from the shaft (9) radially. (10) is provided with a combustion furnace (5) having a length of about two thirds of the inner cover (3). The combustion furnace (5) is composed of a circular fence-shaped grate (11) in which a large number of refractory rods are attached to an annular frame member at small intervals toward the generatrix direction. The other end of the inner cover (3) is partially covered with the opening as a dust introduction port (12) at the other end of the garbage carry-in tube (6), and the other end is opened as a non-combustible material discharge port (13). And a discharge space (16). The inner surface of the grate (11) of the combustion furnace (5) has the shaft (9)
During the rotation of the combustion furnace (5) in the direction of the arrow accompanying the above, the dust inside the combustion furnace (14) at which the non-combustible material discharge port (13) at the other end is to be sent out is swept with substantially uniform distribution. At the same time, on the outer peripheral surface of the grate (11), an ash transfer screw blade (15) for projecting the ash in the ash collecting and smoke collecting chamber (7) to the other end is projected. is there. (17) is an inner and outer cover (3), an oil burner attached to the lower part of the other end face of (1), (18) is a blower, and these combustion flame emission nozzles and outlets are installed in the combustion furnace (5). Towards The inlet of the blower (18) and the preheating chamber (4) are connected by a pipe (19). (2
0) is an air intake of the preheating chamber (4).

The garbage carry-in tube (6) is connected to a hopper (21) which opens through the inner and outer covers (3) and (1) and opens upward at one end of the upper surface of the garbage carry-in tube. It is opened to communicate with the dust introduction port (12) of the combustion furnace (5), and in this carry-in tube (6), the ribbon screw blade (22) for conveying dust into the combustion furnace (5) is connected to the shaft. (9) Installed on the outer circumference. (23) a rotary vane for introducing a fixed amount of dust provided at a lower portion inside the hopper (21);
Numeral (24) denotes a smoke exhaust port which protrudes outside from the ash collecting and smoke collecting chamber (7) through the outer cover (1).

The shaft (9) is rotationally driven from a sprocket (27) of a geared motor (26) to a sprocket (25) fixed to one end of the shaft (9) via a chain (28).

In the hollow of the shaft (9), a rotary joint (29) engaged with one end of the shaft (9) protrudes.
The cooling water or the cold air is pumped through to prepare for the combustion.

The other end of the inner cover (3) is provided with a separate collection box for ash and incombustibles. As shown in FIG. 3, the other end of the inner cover (3) is bordered by a partition wall (30) which hangs at a position corresponding to the opening end of the incombustible discharge port (13) of the combustion furnace (5). The grate (11), the ash drop (33) of the upper ash collection box (31),
The discharge space (16) is opened with the incombustible material discharge port (34) of the upper incombustible material collection box (32), and each box (31), (32) penetrates through the outer cover (1). At the lower end of the opening of these boxes (31) and (32), the intermediate portions of the movable bottom plates (35) and (36) are swingably supported by hinges (37) and (38).
Weights (39) on the outer ends of the bottom plates (35) and (36),
(40), and the bottom plate (3
5) and (36) are held in a horizontally closed state in contact with the stoppers (41) and (42), and the load on the bottom plate is
9) When exceeding (40), the bottom plate (35), (36)
Open downward as indicated by a virtual line. Below the boxes (31) and (32), a lower ash collection box (43) and a lower incombustibles collection box (44) are further connected, and a movable bottom plate (4) is provided at the lower opening of the lower box.
5) At the middle part of (46), the hinge (4
7) and (48) are supported so as to be swingable, and weights (39) and (40) of the upper box are provided on the outer end of each bottom plate.
Attach weights (49) and (50) twice the weight of
It is held in a horizontal state in contact with the stoppers (51) and (52).

The operation of the above example will now be described. Motor (2
The shaft (9) is rotated in the direction of the arrow in FIG.
The combustion furnace (5) and the ribbon screw blade (22) are rotated in the same direction, and trash is charged into the hopper (21). (6), the dust is introduced into the dust inlet (1) by the screw blade (22).
Transfer from 2) into the combustion furnace (5). When the oil burner (17) is ignited and the blower (18) is started to radiate the combustion flame and air into the combustion furnace (5), the radiated flame and air spread into the garbage carry-in cylinder (6). The garbage in the garbage carry-in cylinder (6) is transferred to the combustion furnace (5) while being dried, and the garbage transferred to the combustion furnace (5) starts burning and rotates while stirring. The blades are scraped off by the transfer blades (14) and carried upward along the inner peripheral surface of the combustion furnace, and then transferred forward while being repeatedly subjected to the stirring action of falling down, thereby fully burning without remaining unburned. Is done. The ash after incineration falls from the gap of the grate (11) into the ash collecting and smoke collecting chamber (7), mainly collects on the bottom of the chamber (7), and moves forward by the rotating screw blade (15). It is transferred and thrown into the upper ash collection box (31). The incombustibles in the combustion furnace (5) are introduced into the upper incombustibles collection box (32) from the incombustibles outlet (13) through the discharge space (16).

During the incineration operation, the cooling water is circulated through the rotary joint (29) through the shaft (9), and the preheated gas in the preheating chamber (4) is supplied to the suction port of the blower (18). The supplied air is supplied via a pipe (19).

The upper collection boxes (31) and (32)
When the ash and incombustibles to be introduced into the tank reach a weight exceeding the weights (39) and (40), the movable bottom plates (35) and (36) open downward and remove the ash and incombustibles from the lower ash collection box (43). ,
After dropping into the lower incombustibles collection box (44), it immediately returns to the original closed state, and thereafter repeats this. Ash and incombustibles in the lower collection boxes (43) and (44)
9) When the weight exceeding (50) is reached, the movable bottom plate (4
5), (46) open downward, drop them out of the box, immediately return to the original closed state, and repeat thereafter. With such a double box structure, the combustion furnace (5) is not exposed to the outside air. In addition, the lower collection box (43),
The ash transfer conveyor and the incombustibles transfer conveyor are arranged under (44), respectively, and transferred to different places.

[0017]

[0018]

According to the incinerator of the present invention, the ribbon blade and the combustion furnace in the garbage carry-in cylinder are rotatably supported, and obstruct the combustion flame radiated from the burner and the air blown from the blower. The garbage introduced into the garbage carry-in cylinder is dried and transferred to the combustion furnace while drying, and the garbage transferred from the rotating combustion furnace is agitated and burned while remaining unburned. The ash that fell from the grate does not return to the grate, and unburned materials fall onto the grate because the outer and inner covers of the furnace body do not rotate. The ash after incineration can be discharged separately through the grate through the ash collecting and smoke collecting chamber to the ash outlet by the ash transfer means, and the incombustibles can be separated and discharged to the incombustibles outlet, respectively.
The combustion efficiency is remarkably excellent, there is almost no unburned gas in the exhaust gas, and the subsequent processing can be greatly facilitated.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view.

FIG. 2 is an enlarged sectional view taken along line II-II of FIG.

FIG. 3 is an enlarged view of a separation collection box part of FIG. 1;

[Explanation of symbols]

 REFERENCE SIGNS LIST 3 inner cover 5 combustion furnace 6 garbage carry-in cylinder 7 ash collecting and smoke collecting chamber 11 grate 12 garbage introduction port 13 incombustible material discharge port 14 trash stirring transfer blade 15 ash transfer screw blade 17 oil burner 18 blower 24 smoke outlet 33 Ash drop 34 Non-combustible drop

Continuation of the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location F23G 5/20 ZAB F23G 5/20 ZABA

Claims (1)

(57) [Claims] The method according to claim 1] Haiotoshi for grate to the peripheral wall, the dust inlet port communicating with dust loading tube at one end, further a cylindrical combustion furnace opened incombustible discharge port respectively to the axial center line laterally to the other end The dust core is rotatably supported about the axis, and the dust loading tube is further provided with
And a rotary drive to transfer garbage into the combustion furnace.
And a dust stirring transfer blade for stirring and transferring dust to the incombustible discharge port when the combustion furnace is rotated, on the inner peripheral surface of the combustion furnace. The outside of the combustion furnace is surrounded by a cover at an appropriate interval to form an ash collecting and smoke collecting chamber, an ash discharge port is provided at an appropriate lower portion of the cover, a smoke exhaust port is provided at an upper end portion, and the incombustible material of the combustion furnace is provided. incombustible input opening a provided with respective discharge bottom of the discharge port, transfer all rather ash in the cover to the ash dropping port said fuel
An incinerator comprising a ash transfer screw blade protruding from an outer peripheral surface of an incinerator, and a burner for emitting combustion flame and a blower for blowing air into the combustion furnace.