JPH0344995Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a grate for an incinerator for burning waste.

Conventional technology In incinerators that burn waste discarded from homes and factories, the waste is burned on a grate, but this grate has traditionally been air-cooled. was.

Problems that the invention aims to solve However, in recent years, regarding the above waste,
Due to changes in lifestyle, the proportion of plastics has increased, and the calorific value when burning waste has decreased from 1,500 to 2,000 Kcal/Kg to 2,500 to 2,500 Kcal/Kg.
3,000 Kcal/Kg, which caused the problem that the grate of the incinerator was heated more strongly than before and was damaged.

The present invention solves the above problems and aims to provide an incinerator grate that will not be damaged even when heated strongly.

Means for Solving the Problems In order to solve the above problems, the incinerator grate of the present invention has a plurality of grate plates attached to the top surface of the grate beams along the length direction through grate stands. The grate beams below the grate stand are provided with air holes that penetrate in the vertical direction, and cooling water passages are formed inside the grate beams.

Effect In the above configuration, by flowing water through the cooling water passage formed in the grate beam, the grate beam and eventually the entire grate are effectively cooled, thereby preventing damage to the grate even if it is strongly heated. This will be prevented. Moreover, since the grate beams are provided with air holes that penetrate in the vertical direction, the waste can be burned well.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings.

FIG. 1 is a schematic overall view showing an example of an incinerator. First, the incinerator 1 will be explained with reference to FIG.
is provided, and the waste dumped into the incinerator 1 from the hopper 3 is incinerated while flowing over the inclined grate 2. Incidentally, combustion air X is supplied upward from below the grate 2 to promote combustion of the waste.

As shown in FIG. 2, the grate 2 consists of a fixed grate 2A and a movable grate 2B.
A and 2B are arranged alternately in the width direction, and only the movable grate 2B is reciprocated in the direction a, thereby causing waste to flow downstream.

The grate 2 has a structure as shown in FIG. 3, and includes a grate plate 4, a grate base 5 to which the grate plate 4 is fixed, and a grate beam to which the grate base 5 is attached. 6, and a plurality of grate plates 4 are attached to the upper surface of the grate beam 6 along the length direction via the grate base 5. A plurality of air holes 7 are provided in the grate beams 6 at locations below the grate base 5 that penetrate in the vertical direction, and inside the grate beams 6 there are cooling water passages communicating in the length direction. 8 is formed. This cooling water passage 8 is connected to one heat exchanger tube of a heat exchanger 9, and the other heat exchanger tube of the heat exchanger 9 is connected to a heat utilization engine (not shown), which is, for example, heating or hot water supply equipment. ing.

Next, its effect will be explained. The waste dumped from the hopper 3 into the incinerator 1 falls onto the upper surface of the upstream side of the grate 2, and is swept downstream by the reciprocating movement of the movable grate 2B. X is supplied between the grate beams 6 and through the air holes 7 of the grate beams 6, and the waste is well incinerated. On the other hand, the grate 2 is heated by the combustion heat of the waste, but since the cooling water passage 8 is formed in the grate beam 6 of this grate 2, this cooling water passage 8
The grate 2 is effectively cooled by the water flowing through it. The cooling water is supplied to the cooling water passage 8 of the grate beam 6.
While passing through the waste, the combustion heat of the waste is absorbed and the temperature increases, and this heat is passed through the heat exchanger 9 to the heat utilization engine 9.
be used more effectively.

Effects of the invention As described above, according to the invention, the grate is effectively cooled by the cooling water in the cooling water passage formed in the grate beam, and damage to the grate is prevented even if it is strongly heated. Even if the grate beams are made wider by the cooling water passages, there is no shortage of combustion air due to the air flowing through the air holes that penetrate the grate beams in the vertical direction, and the waste is incinerated satisfactorily. Furthermore, if the cooling water heated to a high temperature by passing through the cooling water passage is used in a heat utilization engine such as a heating or hot water supply facility, further energy saving effects can be obtained.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a schematic diagram of an incinerator, Fig. 2 is a perspective view of a grate, and Fig. 3 is an exploded perspective view of the grate simultaneously showing the flow of cooling water. . 1... Incinerator, 2... Grate, 4... Grate plate, 5... Grate stand, 6... Grate beam, 7... Air hole, 8... Cooling water passage, 9... Heat exchanger.

Claims (1)

[Scope of utility model registration request] A plurality of grate plates are attached to the upper surface of the grate beam through grate stands along the length direction, and air holes are provided vertically penetrating the grate beam below the grate stand. An incinerator grate characterized in that a cooling water passage is formed inside the incinerator.