JP2541838Y2 - Waste supply system for fluidized bed waste incinerator - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refuse supply device for a fluidized bed refuse incinerator suitable for incineration of municipal refuse.

2. Description of the Related Art Various types of municipal waste incinerators have been proposed. One of them is a refuse incinerator using a fluidized-bed refuse incinerator. A twin screw type bag breaking supply device is known as a supply device. This incinerator, as shown in FIG.
A fluidized bed made of sand or the like is formed inside the incinerator 2, and the fluidized bed 1 is heated by a heating burner 4 provided at an intermediate portion of the incinerator 2. Then, the refuse is supplied from the twin screw type bag breaking supply device 6 into the incinerator 2 via the air seal device 9 and the disperser 3. A primary air supply port 10 is provided at a lower portion of the incinerator 2, a secondary air supply port 11 is provided at an upper portion, and a combustion gas discharge port 12 is provided at a top portion, respectively.
At the lower part of the incinerator 2, the sand forming the fluidized bed 1 is discharged together with the non-combustible material to form sand from which the non-combustible material has been removed via the screw conveyor 13 and the sieving device 14. It is returned to the upper part by the circulation conveyor 15 and circulated.

[0002]

However, the above-mentioned conventional refuse supply apparatus for a fluidized bed refuse incinerator has the following problems. That is, the degree of compression by the screw of the twin-screw type bag breaking supply device 6 varies greatly depending on the shape of the dust, the hardness, the porosity, and other properties. As a result, the amount of refuse supplied into the incinerator 2 via the air seal device 9 and the disperser 3 is likely to change, for example,
There is a drawback that garbage is lumped out or clogged and lacks in quantitative supply.

FIG. 5 is a view for explaining the operation of the conventional air seal device 9, in which an inlet 9a is formed above and an outlet 9b is formed below, and a deep section is arranged around the center of the main body. The rotor 9c is rotatably supported, and a seal plate 9d is pivotally supported by a shaft 9e below the outer periphery of the rotor 9c, and is pressed by a weight 9f below the center of the peripheral surface of the rotor 9c. Has become.

In the above-mentioned apparatus, when the lump of the refuse D is thrown in from the inlet 9a, it goes deeply into the section 9g, and gradually moves downward with the rotation of the rotor 9c, so that the sealing plate
9d is moved away in the direction of arrow A to move and pass through, and this dust D is sent out to the outlet 9b. However, the portion where the dust is supplied between the seal plate 9d and the surface of the rotor 9c is formed in a wedge shape, and a weight 9f is provided on the seal plate 9d, and a gap between the seal plate 9d and the rotor 9c is formed. Although it is configured so that it does not become large, there is almost no scraping effect of the garbage D because it easily retracts,
While the seal plate 9d swings, a large amount of air often leaks from the inlet 9a toward the outlet 9b. Further, since the ordinary fluidized bed incinerator has a high temperature and a high combustion rate, it is difficult to perform stable combustion because the pressure in the incinerator greatly changes when the amount of supplied waste greatly changes.

[0005]

Means for Solving the Problems The present invention solves such a problem.
This was done to solve the problem
A rotor with many shallow compartments in one direction
And be attached to the main body.
The garbage inlet is located at the center of the rotor
Phase of the rotation of the
Staggered arranged and a seal plate to said body, said row
The rotation of the rotor from above to below the center O of the rotor
At the upper part on the side descending toward
It is characterized in that it is supported so as to be pressed against the peripheral surface of
It is.

[0006]

[Function] As described above, garbage attached to the main body
Rotor rotation is lower than rotor center O at intake
Phase shifted to the side that rises upward from
Thereby, refuse can be supplied quantitatively . Ma
In addition, seal the body with the rotor
-The upper part of the side where the rotation of the
On the rotor so that it is pressed against the circumference of the rotor.
This prevents large swinging of the seal plate and allows air to escape.
Injury can be prevented.

[0007]

[Embodiment] An embodiment of a waste supply apparatus for a fluidized bed waste incinerator according to the present invention will be described below with reference to FIGS. In FIG. 1, on a side wall of a fluidized-bed refuse incinerator 20, a fixed-quantity supply device 23 having a disperser 21 and a rotor 22 and a twin-screw-type bag-breaking supply device 24 are provided in series so as to be positioned at an upper stage. I have.

As shown in FIG. 2, the fixed quantity supply device 23 has a rotor 22 provided inside a vertically extending main body 25.
37 is swingably supported by a support shaft 38, and a seal plate 27 is provided so as to level the surface of the dust along the peripheral surface of the upper half portion of the rotor 22. An intake port 28 connected to the fixed quantity supply device 23 is provided at an upper portion of the main body 25, and an outlet port 29 connected to the dispersion machine 21 is provided at a lower portion. The rotor 22 is configured to rotate about a rotation axis O by a driving device (not shown).
And a plurality of rotating blades 31 for storing garbage 32a
32h are arranged annularly, and constitute a kind of rotating bucket.

The restriction gate 37 has a function of scraping off excess dust D contained in the sections 32a to 32h, and its upper end is swingably supported by a support shaft 38.
A large amount of garbage D is oscillated by the amount of garbage D and the rotor 22
Is prevented from being supplied. The seal plate 27 provided on the upper surface of the rotor 22 is a plate body that is in contact with the peripheral surface of the rotor 22, and one end thereof is a seal plate support shaft 35.
Accordingly, the rotor 26 is mounted on the main body 25 at a position substantially above the rotation axis O of the rotor 26, and the other end is disposed so as to extend in the rotation direction of the rotor 26. The sealing plate 27 has a function of suppressing air leakage into the incinerator 20 and a function of leveling the surface of extra dust D accommodated in the sections 32a to 32h.

In the fixed-quantity feeding device 23 having such a configuration, the refuse D compressed and crushed by the twin-screw type bag crushing feeding device 24 is supplied onto the rotor 26 from the inlet 28.
As shown in FIG. 3, the refuse D, whose portion protruding from the peripheral surface of the loader 26 has been adjusted by the restriction gate 37 attached by the restriction gate support shaft 38 near the wall surface of the intake port 28, is removed from the peripheral surface of the rotor 26. The rotor 22 is rotated in the direction of the arrow, and the excess dust D is scraped off by the scraping plate 27. Then, in the lower part, it is quantitatively supplied to the duster 21 from the outlet 29.

[0011]

[Effects of the Invention] As described above, according to the present invention, the main body
Garbage inlet attached to the center of the rotor O
Rotor rotation rises from bottom to top
The phase is shifted to the side, so the waste is quantitatively supplied.
You can now. Also, seal plate on the body
The rotation of the rotor from above the center O of the rotor
The rotor is located at the upper part of the side that descends downward
Because it was supported so as to be pressed against the peripheral surface of the
You can prevent swaying and prevent the passage of air
Swelled.

Thus, by the very simple means of using a compact metering device with a rotor,
It is possible to supply a fixed amount of refuse to the incinerator, and it is possible to measure stable combustion.

[Brief description of the drawings]

FIG. 1 is a front view schematically showing a fluidized bed refuse incinerator according to the present invention.

FIG. 2 is an enlarged view of a portion A in FIG.

FIG. 3 is an explanatory diagram of an operation of the fixed quantity supply device shown in FIG. 2;

FIG. 4 is a side view schematically showing a fluidized bed waste incinerator having a conventional waste supply device.

5 is an operation explanatory view of the device shown in FIG. 4;

[Explanation of symbols]

20 Incinerator 21 Disperser 22 Rotor 23 Metering device 24 Twin screw bag breaker 25 Main unit 27
Seal plate 28 Inlet 29 Outlet 30 Bottom plate 31 Rotating blade 32a to 32f Section 35 Seal plate support shaft 36 Weight 37 Restricted gate 38 Restricted gate support shaft.

Claims (1)

(57) [Scope of request for utility model registration] 1. A main body having a number of shallow sections around it.
The rotor to rotate in one direction
The waste inlet attached to the body
The rotation of the rotor above the center O of the rotor
Phase shifted to the side that rises toward
A seal plate is provided on the main body before the center O of the rotor.
The side where the rotation of the rotor descends from top to bottom
In the upper part of the rotor and press against the peripheral surface of the rotor.
A refuse supply device for a fluidized-bed refuse incinerator characterized by being axially supported .