JP3318682B2 - Granulator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for granulating powdery particles such as incinerated ash, earth and sand, and foundry sand to a required particle size.

[0002]

2. Description of the Related Art Generally, a granulating apparatus of this kind rotates a cylindrical rotary drum whose horizontal or discharge port side is slightly inclined downward, feeds powdery material from one end of the rotary drum, and appropriately controls the rotation. Binders and powders such as water and various emulsions are added, and agglomeration and granulation are performed by the rolling of the powder and granules accompanying the rotation of the rotating drum. And
The rolling of the raw material particles is caused by an ascending movement caused by the rotation of the rotating drum and a descent by gravity due to a frictional force between the inner surface of the rotating drum and the granular material.
For this reason, when the relative frictional resistance between the raw material powder and the inner surface of the rotating drum is small, for example, when the inner surface of the rotating drum is formed to be smooth, the lifting force of the powder due to the friction of the rotating drum is insufficient. Not only does it rise only to a relatively low position, but it also tends to cause slippage and insufficient rolling, and also tends to adhere and grow on the inner peripheral surface of the rotating drum, so that reliable granulation cannot be expected. Met.

In order to solve such a conventional problem, there has been proposed a granulating apparatus in which a scraper is mounted in a rotating drum. Such a granulating device can scrape up the powdery material of the raw material along the inner surface of the rotating drum and surely perform the rolling, but on the other hand, if the frictional resistance is large and the driving power of the rotating drum is likely to be large, However, during granulation, the agglomerates and granules falling from the scraper fell, which had an adverse effect on stable granulation.

[0004]

SUMMARY OF THE INVENTION The present invention is intended to solve the conventional problems at a glance, and not only the frictional force between the raw material powder and the inner surface of the rotary drum, but also a reciprocally operable rotary screen. -To provide a granulating device capable of performing rolling motion by effectively utilizing the frictional force between powder and granules by the scraping action of the powder and uniformly and surely granulating to a desired particle size. It is in.

[0005]

That is, according to the present invention, a material supply feeder is provided at the base end of the rotary drums 2a, 2b and 2c.
9. A discharge port 4 is formed at the other end, and a liquid ejection pipe 12, a powder-supply feeder 13, and a reciprocating operation are provided in the rotary drums 2a, 2b, and 2c via the discharge port 4. A free rotating scraper 15 is inserted into each, and
The rotary drums 2a, 2b, 2c are configured such that a lifting / lowering means 5 capable of adjusting the tilt angle is provided on the base end side so as to tilt and support the discharge port 4 upward.

[0006]

The rotary drums 2a, 2b, 2c are moved by the lifting means 5.
Of the rotating drums 2a, 2b,
2c, the rotating scraper 15 is rotated and reciprocated, and the required raw material particles A are supplied into the rotating drums 2a, 2b, 2c via the supply feeder 9, and the liquid Ejection pipe 12 and supply feeder-1
3, a binder B such as water or various emulsions and a required powder C are supplied. And the rotating drums 2a and 2
The inclination of b · 2c makes use of the frictional force with the inner surface of the rotating drum and the frictional force between the particles while retaining the powdery material A of the raw material, and the rotation and reciprocating operation of the rotary scraper 15 are combined. The rolling motion can be surely performed, and the desired particle size can be uniformly and reliably granulated.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes an elongated rectangular frame, and 2a denotes a cylindrical rotary drum which is disposed on the frame 1 via a tilting base 3 in an inclined manner. The rotary drum 2a is provided at one end thereof. The formed discharge port 4 side is set high and set upward. Reference numeral 5 denotes a pair of hydraulic cylinders mounted on the tilting gantry 3 for tiltably supporting the rotary drum 2a in an adjustable manner. Reference numeral 6 denotes a hydraulic cylinder provided at a base end thereof for rotating the rotary drum 2a via a gear mechanism 7. The motor 8 is a pair of support rollers disposed on the both sides of the rotary drum 2a at a substantially middle position, and the motor 9 is provided by inserting a closing lid 10 fixed to the base end of the rotary drum 2a. Raw material powder A provided
Are feed motors 11 for operating the feed feeder 9, and 12 and 13 are discharge ports 4 of the rotary drum 2a.
Binder B inserted into the rotary drum 2 through the
The liquid ejecting pipe and the short feeder for powder C are provided with a motor for operating the feeder 13.
The rotary scraper 15 is rotatably disposed along the center line of the rotary drum 2a, and the rotary scraper 15 is reciprocally movable in its longitudinal direction. Other, D
Indicates product particles.

Next, the granulating operation of the incinerated ash A according to the embodiment configured as described above will be described. First, the hydraulic cylinder 5 is moved up and down as appropriate to properly adjust the inclination angle of the rotary drum 2a. Then, the motor 6 is started to rotate the rotary drum 2a, and the rotary scraper 15 is rotated.
Is operated reciprocally while rotating. Then, the incineration ash A is supplied from the supply feeder 9 and the liquid ejection pipe 12
A binder B such as water is supplied into the rotary drum 2a, and a required powder C is supplied from a supply feeder 13 as needed. The supplied incineration ash A rolls from its base end toward the discharge port 4 side by the rotation of the rotary drum 2a while being humidified by the binder B while being scraped up by the rotary scraper 15, and gradually aggregates.・ It is granulated. At this time, the discharge port 4 side of the inclined rotary drum 2a is set high, that is, since the rolling of the humidified incineration ash A has an ascending gradient, the frictional force with the inner surface of the rotating drum while retaining the incineration ash A of the raw material, and The rolling motion can be reliably performed by the frictional force between the incineration ash A, and the rotary scraper 1
The granulation effect can be further increased in combination with the rotation / reciprocation operation of No. 5.

The particles D produced by the agglomeration / granulation are further pressed and gradually rolled in the direction of the discharge port 4 by the continuous supply of the incineration ash A, and further roll. At this time, when the water content of the produced particles D is large, the required powder C is supplied from the supply feeder 13 into the rotating drum 2a, and the particles D are supplied.
It is good to adjust the water content by dusting. The particles D whose water content has been adjusted are discharged outward through the discharge port 4. Hereinafter, incineration ash A is continuously granulated in the same manner.

Although the above-described embodiment shows an example of application to incineration ash A, the present invention is not limited to this and can also be applied to granulation of granular materials such as earth and sand and casting waste sand. Further, although the shape of the rotary drum 2a is cylindrical, the rotary drum 2a may be formed into a required shape such as the substantially drum-shaped rotary drum 2b shown in FIG. 4 or the substantially drum-shaped rotary drum 2c shown in FIG. Although the rotary drum 2a is inclined and supported by the hydraulic cylinder 5, other known lifting means such as an air cylinder may be employed. Further, in order to further enhance the granulation effect of the powder A, the lifting means is continuously moved up and down with a small stroke, and the rotating drums 2a, 2b and 2c are rotated while being rocked. Alternatively, a known swing mechanism may be additionally provided in some cases.

[0011]

According to the present invention, as described above, the raw material supply feeder is provided at the base end of the rotary drums 2a, 2b, 2c.
9. A discharge port 4 is formed at the other end, and a liquid ejection pipe 12, a powder-supply feeder 13, and a reciprocating operation are provided in the rotary drums 2a, 2b, and 2c via the discharge port 4. A free rotating scraper 15 is inserted into each, and
The rotary drums 2a, 2b, and 2c are provided with lift means 5 capable of adjusting the tilt angle on the base end side so as to tilt and support the discharge port 4 side upward. The rotation of the rotary scraper 15 while rotating and reciprocating the rotary scraper 15 while properly tilting and supporting the raw material particles A in the rotary drums 2a, 2b and 2c via the supply feeder 9 is performed. And the liquid ejection pipe 12 and the supply feeder 13
A binder B such as water and a required powder C are supplied through the hopper, and the frictional force with the inner surface of the rotating drum and the frictional force between the powdery particles are utilized while retaining the powdery material A as a raw material. The rolling motion is surely performed in combination with the rotation and reciprocating operation of the scraper 15, so that the granules can be uniformly and reliably granulated to a desired particle size.

[Brief description of the drawings]

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

FIG. 2 is a left side view of the same.

FIG. 3 is a cross-sectional view taken along line 1-1 of FIG. 1;

FIG. 4 is a half sectional view showing a rotary drum b.

FIG. 5 is a half sectional view showing a rotary drum c.

[Explanation of symbols]

 2a, 2b, 2c Rotary drum 5 Hydraulic cylinder 9 Supply feeder 12 Liquid ejection pipe 13 Supply feeder 14 Rotary scraper

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-53-43975 (JP, A) JP-A-59-222218 (JP, A) JP-A-58-1889028 (JP, A) 620 (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) B01J 2/12

Claims (1)

(57) [Claims] 1. A raw material supply feeder 9 is formed at a base end of the rotating drums 2a, 2b and 2c, and a discharge port 4 is formed at the other end of the rotating drums 2a, 2b and 2c. A liquid ejection pipe 12, a powder supply feeder 13, and a reciprocally movable rotary scraper 15 are respectively inserted through the discharge port 4, and the rotary drums 2a, 2b, 2c are connected to the discharge port 4. A granulating apparatus characterized in that an elevation means 5 capable of adjusting the inclination angle is provided on the base end side so that the side can be inclined upwardly.