JPH0957085A - Quantitative delivering method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the defective discharge from a storage hopper, bridging and clogging in the method for quantitatively delivering refuse and to quantitatively deliver the refuse. SOLUTION: Impeller shafts 11 are horizontally provided in parallel in the intermediate stage in a storage hopper 1, the shafts are rotated by a motor 12 at a revolving speed corresponding to the delivery. A feeder 3 is furnished at the lower part of the hopper 1, the discharge from the feeder 3 is made greater than the deposit from the shafts 11, and the refuse is delivered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a quantitative cutout method, and more particularly to a quantitative cutout method for dust in a refuse treatment device.

[0002]

2. Description of the Related Art Conventionally, a method for quantitatively extracting waste from an municipal solid waste treatment plant has been such that a screw feeder, a pan conveyor, a scraper conveyor, and the like are provided at the bottom of a storage hopper, and an inverter motor or the like is used as a drive device for the saw. The cutting amount was adjusted.

[0003]

In a hopper for storing wastes and granules, which is provided with a cutting device such as a discharge screw conveyor and a conveyor with a vertical plate for extrusion (for example, a pan conveyor, a scraper conveyor, etc.) below the storage hopper. , When a large amount of substance is deposited in the hopper, the cutting device
Not only the load for discharging the substance, but also the weight of the accumulated substance is added as an extra load.

Further, when the deposits in the hopper are wastes such as dusts, they are often entangled with each other and an abnormal load is applied to the cutting device to cause an overload, which makes it impossible to discharge the wastes. Not only that, but in the vicinity of the upper part of the outlet opening of the cutting device in the lower part of the hopper, the compressed waste solidifies and solidifies on the hopper wall to form a dead zone, which prevents the deposits in the hopper from falling and the bridge. It becomes difficult to smoothly drop, discharge and cut out the contents in the hopper, and the waste in the dead zone interferes with the cutting device, causing a very large load.

FIG. 2 illustrates this. A cutting device 3 such as a screw feeder is provided at the lower end of a hopper 1 for storing the dust 2, and an inverter motor 4 rotates it to direct the dust 2 toward the discharge port 5. To send. At this time, for example, when storing things that are entangled, such as crushed dust, the dust near the screw conveyor outlet arch (upper outlet opening) below the hopper is compressed while being entangled, and a large load is applied to the screw. Join. If there is a large amount of storage in the hopper, gravity will be added to the screw and discharge will be difficult.

Further, when the waste is dried, if hot air is blown directly into the storage hopper, the waste will stick to each other and become difficult to discharge. Therefore, the storage hopper and the drying device are conventionally provided separately. Therefore, there is a problem that the equipment cost is expensive. It is an object of the present invention to provide a technique which solves the above problems of the quantitative extraction method particularly applied to such a waste treatment plant.

Another object of the present invention is to further secure the fixed amount cutting by adding a device for blowing hot air to the fixed amount cutting device and also to use the simple type dust drying device to reduce the equipment cost. .

[0008]

The present invention was developed in order to solve the above-mentioned problems, and is characterized as a technical means for dealing with special circumstances particularly in waste disposal. According to the present invention, a plurality of rotary vane shafts or rotary vane shafts whose blades are protruded from a shaft are horizontally arranged side by side in a middle stage of a storage hopper, and a cutting device is provided below the storage hopper. The quantitative cutout method is characterized in that the cutout amount is set to be larger than the amount of drop from the shaft and a space is provided below the rotary blade shaft to provide a cutout.

In this case, the blade may be one or more radial plate blades protruding around the shaft, a continuous or discontinuous spiral plate blade, or a large number of rods protruding in irregular directions. Plates or amorphous blades can be used. Further, it is preferable that the hot air blowing passage and the hot air outlet are provided on the wall surface of the storage hopper and / or the rotary shaft or the rotary shaft to dry the contents in the storage hopper.

According to the present invention, a rotary vane shaft or a rotary vane shaft is provided above the cutting device of the storage hopper to drop the contents quantitatively so that the capacity of the cutting device is made larger than the dropping capability of the rotary blade shaft. By this, it is possible to cut out below the rotary vane shaft or the rotary vane shaft without filling the contents, and it is possible to solve all the problems so far.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION In the method for quantitatively cutting out dust according to the present invention, at least two rotary vane shafts or rotary vane shafts are installed substantially horizontally in the middle stage of the supply hopper. The rotary blade shaft or the rotary blade shaft temporarily supports the dust accumulated above the rotary blade shaft and drops the dust downward while rotating or rotating.

The rotary blade shaft is a shaft which rotates in one rotation direction, and the rotary blade shaft is a shaft which is repeatedly rotated alternately in forward and reverse directions. When the rotating blade shaft of the present invention has, for example, one plate-shaped blade, it is preferable that the plate-shaped blade is rotated by a rotation angle of 90 degrees between the horizontal posture and the vertical hanging posture. The rotary vane shaft or the rotary vane shaft of the present invention temporarily supports the deposit in the hopper, forms a space below the rotary vane shaft or the rotary vane shaft without contents, and cuts out the load of the deposit. It does not reach the device and causes the sediment to drop constantly. Therefore, unlike the conventional case, the phenomenon of compressing and solidifying the deposit in the vicinity of the outlet of the cutting device does not occur.

By adjusting the number of revolutions or the number of revolutions of the rotary vane shaft or the rotary vane shaft, the rotary vane shaft or the rotary vane shaft causes dust to fall while crushing the dust to an appropriate size. A fixed amount can be discharged. In addition, the slicing device does not compress the deposits in the hopper, does not cause a clogging phenomenon or bridges, and it is possible to accurately achieve quantitative slicing of dust, which has been difficult in the past.

Next, in the present invention, the rotary vane shafts or the rotary vane shafts are horizontally arranged in parallel in the hopper, and these support the deposit in the hopper and form a space thereunder to deposit the deposit. Cut off quantitatively and drop. Therefore, when the hot air passage and the jet holes are provided on the rotary blade shaft or the rotary blade shaft so that the hot air is jetted into the hopper, the storage device itself can form a suitable drying device. Of course, a similar device could be provided on the side wall of the hopper.

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of a hopper showing a method for quantitatively cutting out dust according to an embodiment of the present invention. In the present invention, the rotary vane shafts 11 are arranged horizontally in parallel in the middle stage of the hopper 1. The rotary blade shaft 11 may be a shaft provided with one blade 21 shown in FIG. 3, and in this case, the rotary blade shaft 11 reciprocally rotates as shown by an arrow 28 as shown in FIG. May be FIG. 4 shows another example in which a plurality of blades 22 are provided. The blades 22 may have a flat plate shape, and may be twisted or the height thereof may change in the axial longitudinal direction. FIG.
It may be a spiral blade 23 as shown in FIG. 6 or a plurality of spiral blades as shown in FIG. Further, as shown in FIG. 7, a blade 25 having a cut may be used, and a projection 26 having an arbitrary size in any direction shown in FIG. 8 may be used as the blade.

As shown in FIG. 1, a plurality of rotary blade shafts 11
Is 5 to 20 rp in the same or opposite direction by the motor 12.
It is rotated at a rotation speed of about m, and the contents 2 such as dust accumulated on the rotary vane shaft are dropped while being cut according to the rotation speed. The slicing device 3 conveys this falling object toward the discharge port 5, and therefore, it is possible to reliably carry out the quantitative slicing without causing a clogging or a bridge.

Next, FIGS. 10 to 12 show another embodiment to which the present invention is applied. 10 is a longitudinal sectional view of the storage hopper, FIG. 11 is a sectional view taken along the line AA of FIG. 10, and FIG. 12 is a sectional view taken along the line BB of FIG. The storage hopper 1 is provided with a hot air passage 31 on its side wall, blows hot air from the hot air inlet 34, and blows hot air into the storage hopper 1 from the hot air passage 31. The nozzle 33 is provided in the cutting line direction so that the hot air swirls in the storage hopper 1. The portion where the nozzle 33 is opened in the storage hopper 1 is below or in the vicinity of the rotary vane shaft 32, and is a place where a space is formed in the storage hopper 1. Therefore, the hot air evenly distributes the contents. Heat dry. The exhaust gas is discharged from the exhaust port 35.

Further, as shown in FIG. 12, the rotary blade shaft 32
Is hollow, and a large number of hot air blowing nozzles 36 are provided on the rotary vane shaft so that hot air can be blown into the hopper using the hollow portion as a hot air passage, and hot air is supplied from the hot air inlet 37. The hot air supply rate V (kg / min) can be expressed by the following equation. V = 650 W / [c × (Ti-To)] where W: Moisture evaporation amount of dust in the hopper kg / min c: Specific heat of hot air kcal / kg ° C Ti: Hot air inlet temperature ° C To: Hot air exit Side temperature ℃ In this example, since the contents such as dust in the storage hopper are gradually moved and dropped by the rotating blade shaft, ignition due to local heating is prevented, drying and heating can be relatively uniformly performed, and separate drying is performed. No need to install a furnace.

[0019]

EFFECTS OF THE INVENTION Since the method for quantitatively cutting out dust according to the present invention is constructed as described above, it is possible to achieve the quantitative feeding without causing defective discharge of dust, bridge, and blockage. Further, it can also serve as a drying device, and the facility cost can be reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a method for quantitatively cutting out dust according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a conventional method for quantitatively cutting out dust.

FIG. 3 is a perspective view of an embodiment of a rotary blade shaft.

FIG. 4 is a perspective view of an embodiment of a rotary blade shaft.

FIG. 5 is a perspective view of an embodiment of a rotary blade shaft.

FIG. 6 is a perspective view of an embodiment of a rotary blade shaft.

FIG. 7 is a perspective view of an embodiment of a rotary blade shaft.

FIG. 8 is a perspective view of an embodiment of a rotary blade shaft.

FIG. 9 is a cross-sectional view showing a method for quantitatively cutting out dust according to an example of the present invention.

FIG. 10 is a cross-sectional view showing a method of quantitatively cutting out dust according to another embodiment.

FIG. 11 is a sectional view taken along the line AA of FIG. 10;

12 is a sectional view taken along the line BB of FIG.

[Explanation of symbols]

1 Hopper 2 Garbage (contents) 3 Cutting device 4 Motor 5 Discharge port 6 Adherent 11 Rotating blade shaft 12 Motor 21, 22, 23, 24, 25, 26 Blade 27 Arrow (example of 90 ° reciprocating motion) 31 Hot air Passage 32 Rotating blade shaft 33 Nozzle 34 Hot air inlet 35 Discharge port 36 Nozzle 37 Hot air inlet

Claims (3)

[Claims] 1. A plurality of rotating blade shafts or rotating blade shafts having blades protruding from a shaft are horizontally arranged side by side in a middle stage of a storage hopper, and a cutting device is provided at a lower portion of the storage hopper, and a discharge amount of the cutting device is rotated. A quantitative cutout method characterized in that the cutout amount is set to be larger than the amount dropped from the blade axis and a space is provided below the rotary blade axis. 2. The blade is one or more radial plate blades protruding around the axis, continuous or discontinuous spiral blades, or a large number of rods or plates protruding in irregular directions. Alternatively, the fixed-width cutting method according to claim 1, wherein an irregular blade is used. 3. The hot air blowing passage and the hot air blowing outlet are provided on the wall surface of the storage hopper and / or the rotary vane shaft or the rotary vane shaft to dry the internal melt in the storage hopper. Quantitative cutout method.