JPH07180818A - Dust incinerating preprocessing facility - Google Patents

Abstract

PURPOSE:To enable moisture content in dusts to be easily removed in such a way that the compositions of the dust fed into a dust pit may become uniform. CONSTITUTION:A plurality of rollers 21, 22 having a plurality of rod-like members 23 projected at their surfaces and which are rotatable around a substantialy parallel axis (p) are installed at a dust feeding part into a dust pit 1 and there is provided a driving mechanism 24 for driving the adjoining rollers 21, 22 while their rotational speeds or rotational directions are made different from each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refuse incineration pretreatment facility, and more particularly, to a structure of a dust pit for temporarily accumulating refuse transported by a garbage truck before incineration.

[0002]

2. Description of the Related Art Municipal garbage collected from households
After being accumulated in the garbage pit, it is put into an incinerator and incinerated. By the way, depending on the quality of the waste, such as the amount of water contained in the waste, it may have a significant effect on the combustion state in the incinerator, which may interfere with efficient incineration.
It is desirable that the dust introduced into the furnace has as little water content as possible and is uniform in density and composition. Therefore, in the conventional refuse incineration pretreatment facility, as shown in FIG. 6, in order to make the composition of the dust accumulated in the dust pit A uniform, the accumulated dust is conveyed to the hopper C of the incinerator B and input. The crane mechanism D is installed in the dust pit and the remote operation mechanism E is used to move and stir the dust contained in the pit A in the dust pit A by using the crane mechanism D.

[0003]

However, according to the above-mentioned prior art, since the dust contained in the pit is usually enclosed in a paper bag or a vinyl bag, the paper bag or the vinyl bag is removed from the paper bag or the vinyl bag after being agitated by a crane. There is no guarantee that all the trash will be taken out. Therefore, it is difficult to uniformly stir the dust whose composition such as water content and type is different for each bag, and further, if the dust is sealed in such a bag,
It has a drawback that it takes a long time to dry after being put into the furnace. An object of the present invention is to eliminate the above-mentioned conventional drawbacks and provide a refuse incineration pretreatment facility so that the composition of the dust becomes uniform when it is put into the dust pit, and moreover, the moisture contained in the dust can be easily removed. There is a point to do.

[0004]

In order to achieve this object, the characteristic configuration of the refuse incineration pretreatment facility according to the present invention is that a plurality of rod-shaped bodies are projected on the surface at the portion where dust is injected into the dust pit, and A point is that a plurality of rotatable rollers are provided around the parallel axis, and a drive mechanism is provided to drive the adjacent rollers with different rotational speeds or rotational directions.

[0005]

The dust bag thrown into the dust pit falls on the upper part of the plurality of rollers in the throwing part and receives a force in the direction of rotation by the rod-shaped body projecting on the surface of the rotating roller. Here, if the rotation directions of the rollers driven by the drive mechanism are the same, the directions of the forces acting on the bag by the rod-shaped bodies protruding from the surfaces of the adjacent rollers are opposite,
If the bag is broken due to a shearing force acting on the dust bag and the rotation directions of the rollers are different, the directions of the forces acting on the bag by the rod-shaped bodies protruding on the surface of the adjacent rollers are the same direction. Since the rotation speeds are different, the balance is different, and the dust bag is also broken by the shearing force. As a result, the dust contained in the dust bag is taken out from the bag and drops while being stirred by the rod-shaped body protruding above the surface of the roller, and the water trapped in the bag is also separated from the dust. It is.

[0006]

EFFECTS OF THE INVENTION According to the present invention, it is possible to provide a refuse incineration pretreatment facility so that the composition of the dust becomes uniform when it is put into the dust pit and the water contained in the dust can be easily removed. It is now possible to improve the efficiency of incinerating garbage in the incinerator.

[0007]

EXAMPLES Examples will be described below. Garbage incineration equipment,
As shown in FIG. 1, a waste pit 1 as a waste incineration pretreatment facility for accumulating waste collected from each household, an incinerator 2 for sequentially incinerating the waste in the waste pit 1, and an incinerator 2 are generated. It is configured by a power generation device 12 that generates electric power by using thermal energy.

The incinerator 2 is provided with a hopper 3 for loading the dust in the dust pit 1, incineration zones 4, 5, 6 for sequentially treating the dust loaded in the hopper 3, and an ash pit for collecting the treated ash. 7, an exhaust gas treatment device 8, a chimney 9 and the like. The incineration treatment zones 4, 5 and 6 are constructed by providing a stoker type transport mechanism which can be reciprocally moved obliquely upward.
The lower part of each incineration zone is composed of a drying zone 4 for drying the dust from upstream to the downstream, a combustion zone 5 for burning the dust that has been dried to some extent, and a post-combustion zone 6 for completely burning the dust to incinerate it. Are provided with wind boxes 4a, 5a, 6a so as to supply high temperature air for drying or combustion.

The power generator 12 operates a turbine by using a waste heat boiler 10 for exchanging heat with high temperature gas burned in a combustion space above the combustion zone 5 to generate steam, and steam generated in the waste heat boiler 10. It is composed of a generator 11 for generating power.

In the dust pit 1, as shown in FIG. 2, an agitating mechanism 20, a dehydrating mechanism 30, a blowing mechanism 40 and a conveying mechanism 5 are provided.
There are multiple sets of 0 and 0 along the width direction of the pit.
The dust thrown in from the garbage collection vehicle 14 through 3 is taken out from the dust bag enclosed by the stirring mechanism 20 and stirred, dehydrated by the dehydration mechanism 30, loosened by the blower mechanism 40 and dropped, It is thrown into the hopper 3 by the transport mechanism 50.

The agitation mechanism 20 is provided for each separate casing 1 provided below the inside of each door 13 that closes the pit except when dust is introduced.
A plurality of rod-like bodies 23 are projected on the surface and two rollers 21 and 22 which are rotatable about a substantially parallel axis p are provided at the dust-injection portion a, and the rotation directions of the rollers 21 and 22 are set. So that they face each other inward
A hydraulic drive mechanism 24 that is driven between the first and the second directions is provided. The drive mechanism 24 is configured to drive the rollers 21 and 22 with a constant speed difference, and the dust bag loaded from the garbage truck 14 is
A force in the direction of rotation is received by the rod-shaped body 23 that has dropped onto the pair of rotating rollers 21 and 22 in the insertion portion 1a and projected on the surface thereof. Here, since the rollers 21, 22 driven by the drive mechanism have different rotation directions, the respective rod-shaped bodies 2 projecting from the surfaces of the adjacent rollers 21, 22.
Although the force acting on the bag 3 is in the same direction (the direction in which the dust is wound downward), the rotation speed is different, so that the balance is lost and the bag is broken by the shearing force acting on the dust bag. Therefore, the dust contained in the dust bag is taken out of the bag and drops while being agitated by the rod-shaped body protruding above the surface of the roller.

The dewatering mechanism 30 is a pair of upper and lower dewatering rollers which are made of steel, hard rubber or the like to remove water by sandwiching dust that has been stirred by the stirring mechanism 20 and has fallen along the inclined surface 1b formed on the housing 1a. 31, 32 and a hydraulic drive mechanism 34 for driving the dehydration rollers 31, 32,
The drainage groove 35 is provided with a net 33 for preventing dust from falling on the upper surface, and the water squeezed and squeezed by the dehydration rollers 31 and 32 is collected through the drainage groove 35. The drainage groove 35 has an axial center p ′ of the dehydration rollers 31 and 32.
It is attached to the front side of the lower roller 32 across a plurality of dehydrating mechanisms 30 provided along the width direction of the pit in a posture substantially parallel to the above, and the recovered water is sprayed into the combustion chamber of the incinerator 2. It

The blower mechanism 40 includes a blower 4 and a blower box 1c formed below the inclined surface 1b of the casing constituting the charging section 1a.
1 is configured to send in the wind, and the high-density dust that is dehydrated by the dehydration mechanism 30 and falls is dispersed by the wind force.

The transport mechanism 50 is a belt-conveyor-type horizontal transport mechanism 51 provided on the bottom surface of the dust pit 1 and a bucket-type vertical transport mechanism that transports the dust transported by the horizontal transport mechanism 51 to the hopper 3 of the dust incinerator 2. It is composed of a mechanism 53. Of the dust dispersed by the blower mechanism 40, heavy dust is blown substantially vertically downward, and light dust is blown forward, and after being sorted, falls to the horizontal transport mechanism 51. Therefore, the heavy dust dropped on the horizontal transport mechanism 51
Since light dust has been removed, the fluidity is improved, so that vibrations during transportation cause the fluid to flow to the periphery so as to have a uniform thickness on the belt. After that, as a result of the light dust falling on the upper part thereof, the dust having a proper mixture of the heavy dust and the light dust is accommodated in each bucket of the vertical transport mechanism 53 and thrown into the hopper 3.

Another embodiment will be described below. In the above-described embodiment, the stirring mechanism 20 has a plurality of rod-shaped bodies 23 protruding from the surface and two rollers 21 and 22 that are rotatable about the substantially parallel axis p are provided. Is not particularly limited, and as shown in FIG.
It may be configured by providing three rollers R1, R2, R3 or more rollers in the horizontal direction. Further, in the above embodiment, the rotation direction of the rollers 21 and 22 constituting the stirring mechanism 20 is made different from each other in the direction in which dust is caught between the rollers 21 and 22, and the rotation speed thereof is made different. However, the rotation direction may be set to the same direction.
In this case, as shown in FIG. 4B, by setting the rotation speed of the roller for feeding the dust downward between the adjacent rollers to be higher than the rotation speed of the roller for scraping the dust upward, Can be easily sent into the pit. Furthermore, as shown in FIG.
As a plurality of rollers R1, R2, R for breaking the dust bag
Similarly, a plurality of rod-shaped bodies 23 are projected on the surface below 3, and a plurality of rollers R4, R5, R6 which are rotatable about a substantially parallel axis p are further agitated for the dust taken out from the bag. You may arrange for the purpose. The material and the number of the plurality of rod-shaped bodies projected on the roller surface of the agitation mechanism 20 are not particularly limited, and hard rubber, iron material or the like can be used as appropriate. Further, the installation distance of the adjacent rollers is not particularly limited, but the distance between the surfaces of both rollers is less than twice the protruding length of the rod-like body 23 in order to surely break the bag. Is preferred.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Overall configuration of incinerator

FIG. 2 is a perspective view of a main part

FIG. 3 is a sectional view of a main part

FIG. 4 is an explanatory diagram of a main part showing another embodiment.

FIG. 5 is an explanatory diagram of a main part showing another embodiment.

FIG. 6 is an overall configuration diagram of an incinerator showing a conventional example.

[Explanation of symbols]

 1 dust pit 21, 22 roller 23 rod-shaped body 24 drive mechanism

Claims (1)

[Claims] 1. A portion for throwing dust into the dust pit (1),
A plurality of rollers (21) having a plurality of rod-like bodies (23) protruding from the surface thereof and rotatable about a substantially parallel axis (p);
A waste incineration pretreatment facility having (22) and a drive mechanism (24) for driving the rollers (21) and (22) adjacent to each other with different rotational speeds or rotational directions.