JP3065212B2 - Extrusion supply method and extrusion supply device for objects to be treated such as dust - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for extruding and supplying refuse, sludge, incineration ash and fly ash to a waste incinerator or a melting furnace for incineration ash. The present invention relates to an extrusion supply method and an extrusion supply device.

[0002]

2. Description of the Related Art Conventionally, there is a device shown in FIGS. This is an extrusion port 1 on the front
a pusher 3 is provided movably in the front-rear direction in a cylinder 1 having a communication port 1b communicating with the hopper 2 at the center of the upper surface thereof, and the extrusion port 1a in the cylinder 1 and the communication port 1b are provided. The first half between the two is a consolidation unit 4 for compacting the object G such as dust, and the second half thereof is a compression unit 5 for compressing the object G such as dust. Hydraulic cylinder 6
By moving each pusher 3 from the retracted position A behind the hopper 2 to the advanced position B intruding into the compression section 5, the object G such as dust supplied from the hopper 2 into the cylinder 1 is moved. The object G to be processed, such as dust in the compacted state, which is pressed and stays in the compacted portion 4
Is extruded into a furnace 7 such as a refuse incinerator or a refuse incineration ash melting furnace.

[0003]

In the above-mentioned conventional configuration,
When the object G such as dust is highly fluid, such as a high water-containing powder fluid (eg, sludge, slurry), when the pusher 3 is advanced and pressed, as shown by an arrow E in FIG. In addition, the object G having high fluidity flows back to the hopper 2 and escapes, so that the object G such as dust cannot be extruded and supplied into the furnace 7 by a fixed amount, and the object G such as dust There is a disadvantage that the processing efficiency of G is reduced.

SUMMARY OF THE INVENTION In view of the above problems, the present invention relates to a method in which an object to be treated such as dust is made of a powdered fluid having a high water content (eg, sludge, slurry).
It is an object of the present invention to provide a method and an apparatus for extruding and supplying garbage and the like, which can extrude and supply even a fluid having a high fluidity at a constant rate.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, a plurality of cylinders are formed in a cylinder having an extrusion port formed on a front surface and a communication port communicating with a hopper at a central portion of an upper surface. Pushers are provided adjacent to each other so as to be movable in the front-rear direction, and a first half portion between the extrusion port and the communication port in the cylinder is a consolidation portion for consolidating an object to be processed such as dust. Along with that, the latter part is a compression part for compressing an object to be processed such as dust, and each of the pushers is at a standby position in front of the compression part, a retreat position behind the hopper, and a forward position in which it enters the compression part. Each pusher is moved from the state where each pusher is stopped at the standby position to the standby position via the retreat position and the advance position from the state where each pusher is stopped at the standby position. After, it is characterized by sequentially moving the other pusher by the same procedure.

According to a second aspect of the present invention, there is provided a cylinder having an extrusion port formed in the front surface and a communication port communicating with the hopper in the center of the upper surface, and provided in the cylinder so as to be movable in the front-rear direction adjacent to each other. A plurality of pushers are provided, and a first half portion between the extrusion port and the communication port in the cylinder is a consolidation portion for making a processed material such as dust compact, and a second half portion thereof. Is a compression unit for compressing an object to be processed such as dust, and each of the pushers can be stopped at a standby position in front of the compression unit, a retracted position behind the hopper, and a forward position entering the compression unit. It is characterized by being constituted.

[0007]

According to the first aspect of the present invention, the pusher is
For example, when the two pushers are stopped at the standby position, one pusher is moved to the standby position via the retreat position and the advance position, and then the other pusher is provided. Is moved in the same way,
This operation is repeatedly performed in a predetermined time cycle. As a result, an object to be treated such as dust supplied from the hopper into the cylinder is pressed and pushed into the compression unit, and the object to be treated such as compacted dust remaining in the compaction unit is quantitatively discharged from the extrusion port to the outside. Extruded and supplied.

Here, even if the material to be treated, such as dust, is a fluid having a high fluidity, such as a highly water-containing powdery fluid (eg, sludge, slurry), when one pusher is moving forward, the other pusher moves. Since half of the communication port is closed at the standby position, the object to be processed such as dust pressed by the advance of the one pusher enters the gap between the other pusher and the consolidation portion and almost flows back to the hopper side. Instead, the object to be treated such as dust having high fluidity can be reliably extruded and supplied to the outside from the extrusion port of the cylinder.

According to the second aspect of the present invention, it is possible to reliably extrude and supply even an object to be processed such as dust having high fluidity to the outside from the extrusion port of the cylinder.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. Components having the same configuration as the conventional example will be described with the same reference numerals.

FIGS. 1 and 2 show an embodiment of the present invention. In this embodiment, two pushers 3a,
3b are parallel passages 8a, 8b in the cylinder 1.
Are arranged movably along guide rails (not shown) provided on the bottom surfaces of the passages 8a and 8b, and the pushers 3a and 3b are respectively provided with hydraulic cylinders 6a and 6b.
Thereby, it can be stopped at a standby position C just before the compression unit 5, a retreat position A behind the hopper 2, and a forward position B entering the compression unit 5 respectively. In addition, sensors 9a to 9f including proximity switches for detecting the positions of the pushers 3a and 3b by detecting the pistons of the hydraulic cylinders 6a and 6b are disposed at predetermined intervals along the cylinder body. Hydraulic cylinder 6
a, 6b and the hydraulic pump 10 are provided with four-port, three-position electromagnetic switching valves 11a, 11b in a hydraulic circuit, and control the electromagnetic switching valves 11a, 11b based on input signals from the sensors 9a to 9f. Accordingly, a control device 12 including a microcomputer for stopping each pusher 3a, 3b at a predetermined position (A, B, or C) is provided. The positions A to C can be easily changed only by changing the arrangement positions of the sensors 9a to 9f.

A method of extruding and supplying an object to be processed G such as dust based on the above configuration will be described.
From the state where b is stopped at the standby position C, one pusher 3a is moved to the retreat position A as shown in FIG. As a result, an object G such as dust is supplied from the hopper 2 into one of the passages 8a, and then the one pusher 3a is moved to the forward position B as indicated by a virtual line in FIG. As a result, the object to be treated G such as dust is pressed and pushed into the compression section 5, and the object to be treated G such as dust in the compacted state staying in the compaction section 4 is extruded into the furnace 7 from the extrusion port 1 a. Supplied. Subsequently, one pusher 3a is moved to the standby position C and stopped as shown in FIG. Next, as shown in FIG. 7C, the other pusher 3b is moved to the retreat position A and then to the forward position B by the same procedure. As a result, the object to be treated G such as dust is pressed and pushed into the compression section 5, and the object to be treated G such as dust in the compacted state staying in the compaction section 4 is extruded into the furnace 7 from the extrusion port 1 a. Supplied. Subsequently, the other pusher 3b may be moved to the standby position C and stopped as shown in FIG. By repeatedly performing the above operation in a predetermined time cycle, the object to be processed G such as dust can be extruded and supplied into the furnace 7.

Here, even if the material to be treated G such as dust is highly fluid, such as a highly water-containing powder fluid (eg, sludge, slurry), as shown by a virtual line in FIG. When the pusher 3a is moving forward, the other pusher 3b closes half of the communication port 1b at the standby position C, so that the processing object G such as dust pressed by the forward movement of the one pusher 3a. Enters into the gap between the other pusher 3b and the consolidation part 4 and hardly flows backward to the hopper 2 side, and the other pusher 3b moves forward as shown by a virtual line in FIG. 3 (c). At this time, since one pusher 3a closes half of the communication port 1b at the standby position C, the object G, such as dust, hardly flows backward to the hopper 2 as in the case described above. Therefore,
It is possible to reliably extrude and supply even an object to be processed G such as dust having high fluidity to the outside from the extrusion port 1a of the cylinder 1 by a fixed amount.

When the pushing efficiency of the object to be treated G such as dust having high fluidity was examined by an experiment, it was 10 to 20% in the extrusion feeding method using the conventional apparatus shown in FIGS. In the extrusion feeding method using the apparatus of the present invention shown in FIG. 2 and 70 to 80%, in the present invention, the pushing efficiency is 3.5 to 8 compared with the conventional example.
It has been improved by a factor of two.

In the above embodiment, the case where two pushers 3a and 3b are provided has been described as an example. However, the present invention is not limited to this, and three or more pushers may be provided. In this case, every other pusher 3
They are operated identically.

In the above embodiment, the object to be processed is
Although garbage was explained, for example, it can be applied to the case of supplying sludge to a refuse incinerator,
The present invention can also be applied to a case where an object to be treated having fluidity such as incineration ash and fly ash is supplied.

[0017]

According to the first aspect of the present invention, even if an object to be treated such as dust is highly fluid, when one pusher is moving forward, the other pusher is in the standby position. Since most of the extrusion port is closed, the object to be processed such as dust pressed by the advance of the one pusher enters the gap between the other pusher and the consolidation portion and hardly flows backward to the hopper side, An object to be processed such as dust having high fluidity can be reliably extruded and supplied from the extrusion port of the cylinder to the outside in a fixed amount.

According to the second aspect of the present invention, even objects to be treated such as dust having high fluidity can be reliably extruded and supplied to the outside from the extrusion opening of the cylinder.

[Brief description of the drawings]

FIG. 1 is a horizontal sectional view showing one embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the same.

FIG. 3 is a horizontal sectional view showing the extrusion supply method.

FIG. 4 is a horizontal sectional view showing a conventional example.

FIG. 5 is a longitudinal sectional view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylinder 1a Extrusion port 1b Communication port 2 Hopper 3a Pusher 3b Pusher 4 Compaction part 5 Compression part A Retreat position B Advance position C Standby position

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Tomohiro Aoki 5-3-28 Nishikujo, Konohana-ku, Osaka-shi, Japan Hitachi Zosen Corporation (56) Reference JP-A-58-108317 (JP, A) Kaisho 56-43103 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) F23G 5/44 F23K 3/16 F23K 3/12

Claims (2)

(57) [Claims] 1. A plurality of pushers are provided adjacent to each other and movable in the front-rear direction within a cylinder having an extrusion port formed on the front surface and a communication port communicating with a hopper at the center of the upper surface. The first half between the extruding port and the communication port is a consolidation unit for compacting an object to be treated such as dust, and the second half thereof is a compression unit for compressing the object to be treated such as dust. Each pusher is configured to be able to stop at a standby position before the compression unit, a retreat position behind the hopper, and a forward position entering the compression unit, and each pusher is stopped at the standby position. From the state, one of the pushers is moved to the standby position via the retreat position and the advance position, and then the other pushers are sequentially moved in the same procedure. Extrusion method for supplying the object to be treated, such as dust to be. 2. A cylinder having an extrusion port formed on the front surface and a communication port communicating with the hopper at the center of the upper surface, and a plurality of pushers provided adjacent to each other in the cylinder so as to be movable in the front-rear direction. The first half between the extrusion port and the communication port in the cylinder is a consolidation part for making the object to be treated such as dust compact, and the second half thereof is the part for the treatment of dust and the like. The pusher is configured to be able to stop at a standby position in front of the compression unit, a retracted position behind the hopper, and a forward position entering the compression unit, respectively. Extrusion feeder for the object to be treated, such as garbage.