JPS589051Y2 - Structure of hollow grate sliding table - Google Patents

Description

[Detailed Description of the Invention] This invention relates to the structure of a hollow grate sliding platform that also serves as a combustion air duct.

When a hollow grate is used in the combustion stoker of an incinerator, favorable results can be obtained in terms of uniform combustion and uniform feeding.

Conventionally, a flexible tube was connected to the starting end of a hollow grate, and combustion air was fed into the hollow grate from an air duct through the flexible tube.

Since the grate reciprocates one by one on the grate slide through the grate support member fixed to the lower surface of the grate, there is no other way than to connect them with highly flexible flexible tubes. That's because there wasn't.

Such an arrangement requires as many tubes as there are grate, resulting in a delicate mechanism and a large number of parts.

Furthermore, since the grate undergoes repeated reciprocating motion, the flexible tube is also prone to wear and tear, requiring a great deal of maintenance effort.

The present invention solves these difficulties by making the member that conventionally functioned only as a grate sliding table also function as a combustion air duct, and by eliminating the flexible tube.

Embodiments will be described below with reference to drawings showing embodiments.

FIG. 1 is a perspective view showing the structure of a stoker made up of hollow fire grates.

1 is a hollow grate, and in this figure, five grate are arranged in parallel.

The hollow grate 1 is supported by a grate support member 3 and a grate sliding base 2 so as to be able to reciprocate back and forth.

To explain the movement mechanism, in this example, a connecting rod 15 is attached to the rear end of the odd-numbered grate, and is pivotally connected to a link 16 that is pivotally supported by a shaft 17.

Since the hydraulic cylinder 18 moves the link 16 back and forth, the grate also moves back and forth.

In the conventional stoker, a flexible tube was connected near the connecting rod 15 of the grate.

In this example, that is not the case.

Since the present invention relates to the structure of the grate sliding table, it will be explained in detail with reference to the enlarged longitudinal sectional view of FIG.

The grate 1 is inclined at a constant angle, and the internal space 11 serves as a combustion air passage.

On the side wall of the grate, for supplying air into the stoker,
A large number of ejection holes 12 are bored.

A hollow grate support member 3 having a horizontal cross section is fixed to a suitable location on the lower surface of the grate 1.

Reference numeral 2 indicates a grate sliding table, and two or more grate slides are arranged perpendicularly to the grate 1.

The grate support member 3 is slidably placed on the grate sliding table 2.

In this example, a motion side sliding seat plate 4 is fixed to the lower surface of the support member 3 with screws 8, and a fixed sliding seat plate 5 is fixed to the upper surface of the sliding table 2.

The sliding table 2 is fixed, and the support member 3 and the grate 1 reciprocate thereon.

If the sliding seat plate 4°5 becomes worn out, only the seat plate needs to be replaced.

The above configuration is well known.

The features of the present invention are that a through hole 10 is provided on the upper surface of the grate support member 3, and an air supply hole 1 is provided on the lower surface of the grate support member 3, and an air supply hole 6 is formed on the upper surface of the grate sliding base 2. The long air supply hole 6 is in constant communication with the air supply slot 6, and combustion air is supplied from the inner cavity of the sliding table 2.

FIG. 3 is a view taken along the line A-A in FIG. 2.

An air supply hole 7 is opened approximately at the center of the sliding seat plate 4 on the moving side.

FIG. 4 is a view taken along the line B-B in FIG. 2.

A long and narrow air supply hole 6 is provided in the center of the relatively short fixed sliding seat plate 5.
is drilled.

FIG. 2 shows the case where the grate 1 is in the front end position.

The air supply hole 7 is located at the front end of the air supply elongated hole 6. Even when the grate 1 slides, the air supply hole 7 overlaps with any part of the air supply elongated hole 6.

Combustion air is fed from one end of the grate sliding table 2.

In other words, the sliding table 2 also serves as an air duct).

Combustion air enters the grate support member 3 from the sliding table 2 through the air supply elongated holes 6 and the air supply holes 7, and reaches the grate internal space 11 through the through holes 10.

Thereafter, it is discharged from the jet hole 12 into the stoker.

Since the present invention has the above configuration, it has the following effects.

(1) The hollow grate slider functions not only as a conventional slider but also as an air duct that supplies combustion air to the grate, and the grate slider 2 is a fixed member. , flexible tubulars can be completely abolished.

[2) Since flexible tubes can be completely eliminated, the hollow grate 1 has fewer attached parts and has a simpler configuration than conventional ones.

(3) Since flexible tubes can be completely abolished, failures due to wear and tear of flexible tubes, which occurred frequently in the past, are completely eliminated, and the life of the combustion air supply section is extended.

Therefore, the grate is safe and reliable to operate and maintenance intervals can be extended.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view of a stoker consisting of a grate with a sliding table structure according to the present invention, Fig. 2 is a longitudinal sectional view showing the structure of the grate and sliding table, and Figs. 3 and 4 are , A-A and B-B arrow views in FIG. Seat plate, 5 is a fixed sliding seat plate, 6 is an air supply long hole, 7 is an air supply hole, 8 and 9 are countersunk screws, 10 is a through hole,
11 is the internal space of the grate, 12 is the nozzle hole, 15 is the connecting rod,
16 is a link, 11 is a shaft, and 18 is a hydraulic cylinder.

Claims (1)

[Scope of utility model registration request] A plurality of grate support members 3 are fixed to the lower surface of a hollow grate 1 having a grate internal space 11 therein, and the grate support members 3 are arranged perpendicularly to the grate support members 3 in the front-rear direction. In the hollow grate slider equipped with a plurality of grate sliders 2 that are slidably supported by the grate support member 3, the grate support member 3 is hollow, and the upper surface thereof is connected to the grate internal space 11. A through hole 10 is provided on the bottom surface of the air supply hole 7.
and making the grate sliding base 2 hollow,
A long air supply hole 6 having a length corresponding to the air supply hole 7 (71>movement range) is bored on the upper surface of the air supply hole 7 (71), and combustion air is passed from the grate sliding base 2 through the grate support member 3. A structure of a hollow grate sliding table, characterized in that it is configured to feed into the hollow grate 1.