JPH06170207A - Pan-shaped granulator - Google Patents

Abstract

PURPOSE:To provide a pan-shaped granulator where the generation of mechanical vibration and noise is prevented and the removal work of a coating layer is not required. CONSTITUTION:A granulating pan 2 is inclined, supported and turned, causing a material to be granulated to roll, allowing it to be granulated. And a rake cutting tool 8 is provided leaving a specified space between it and a bottom plate 6 of the granulating pan. Further a cushioning plate 20 made of flexible material is provided on the bottom plate 6 of the granulating pan 2 to make easy the scraping and removal of a coating layer with a specified thickness of the material to be granulated formed on the cushioning plate 20 by the rake cutting tool 8. Consequently the remaining coating layer is easy to remove and does not cause any trouble in operation. Therefore cleaning work for removing the coating layer on work finished is not required and since on work resumption the remaining coating material is held on the bottom plate, a granulating process is immediately performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention comprises a granulating dish (bread),
The present invention relates to a pan-type granulator which rotates a powder supplied with a binder (for example, water or cement) to granulate it into a spherical shape.

[0002]

2. Description of the Related Art An example of the above-mentioned bread granulator is shown in FIG. The bread granulator 50 includes a granulating dish 51 and a drive shaft 52 attached to the center of the granulating dish 51.
1 is tilted and supported on a pedestal 57, and is rotated by a drive motor 53 via a speed reduction mechanism 54. A rake bite 55 is provided in opposition to the granulating dish 51, and the rake bite 55 has a predetermined distance from the bottom plate 56 of the granulating dish, and is rocked in the radial direction of the bottom plate 56 by a rocking mechanism 57. To be done. Reference numeral 58 denotes a liquid supply nozzle for water or the like, and the binder and powder are mixed by an appropriate means and supplied from the lower right side portion of the granulating dish 51 (see FIG. 6).

At the time of granulation, first, a coating layer a made of a mixture of the binder, powder and water (hereinafter referred to as a granulating member) is formed on the bottom plate 56. Rake bite 5 above
5 has a required gap with the bottom plate 56 for forming this coating layer. Then, by supplying the granulating member, the granulating member is rolled and granulated by the rotation of the granulating dish 51, and the particle diameter gradually increases, becomes a spherical shape, and is overflowed and discharged.

[0004]

At this time, the hardness and the adhesion strength of the coating layer to the bottom plate increase with time. For example, when cement is used as the binder, the hardness and the adhesion strength become stronger. In such a case, when the work is restarted after a certain period of time with the coating layer left unattended, the coating layer having a considerable hardness is scraped off by the rake bite 55, and a large mechanical vibration and noise are generated, so that the apparatus itself. It shortens the service life and may damage the rake bite. For this reason, it is necessary to remove the coating layer at the end of the work, but such work requires a great deal of time and labor to remove it while destroying it with a spatula, chisel, hammer, etc. In some cases, the bottom iron plate may be damaged. Also, if the operation is repeated after removing all the coating layers, the rolling of the granulation member is poor, the initial granulation efficiency is reduced, and slippage in which the granulation member comes into direct contact with the bottom plate occurs. There was damage due to wear (sometimes it could puncture). In recent years, with the increasing use of cement as a solidifying agent in the treatment of dust collecting ash in a refuse incinerator, the above problems have become serious problems in terms of use and structure of the bread granulator. In view of the above points, the present invention has an object to provide a pan-type granulator which prevents mechanical vibrations and noises and does not require the work of removing the coating layer.

[0005]

To achieve the above object, a bread granulator according to the present invention comprises a granulation plate which is supplied together with a binder by tilting and supporting and rotating a granulation dish. In a pan-type granulator equipped with a rake bite that rolls and granulates the granulating member and has a predetermined distance from the bottom plate of the granulating dish, it is flexible on the bottom plate of the granulating dish. A buffer plate made of a conductive material is provided, and the coating layer is scraped and peeled off by the granulation member having a required thickness formed on the buffer plate by the rake bite.

[0006]

[Operation] The buffer plate provided on the bottom plate has a weaker degree of bonding with the solidified coating layer than that with the steel plate. Therefore, when the protruding coating layer is caught on the rake bite due to the rotation of the granulating dish, the impact is alleviated by the buffer plate being made of a flexible material, and the coating layer is easily peeled off. The coating layer having a thickness that is not peeled off by the rake bite remains, and the granulating operation can be performed immediately.

[0007]

EXAMPLES Examples 1 to 4 show a bread granulator according to the present invention. The pan-type granulator 1 includes a granulating dish 2 and a drive shaft 3 having a central portion attached to a tip thereof, and the drive shaft 3 includes a drive motor 4
Is rotated at a predetermined speed through the speed reducer 5, and the granulation plate 2
Is supported by the gantry 30 at a predetermined inclination angle. The granulating dish 2 comprises a disc-shaped bottom plate 6 and side walls 7, and the bottom plate 6
A rake bite 8 is provided opposite to. A plurality of the rake bits 8 are attached in parallel to the tip of an arm 10 of a swing mechanism 9. The swing mechanism 9 has a swing drive motor 11 to which a crank arm 12 is attached, and the crank arm 12 connects the crank bar 12 to the connecting rod 13. By reciprocating, the other end of the rake bite mounting arm 10 is engaged with the connecting rod, and the reciprocating motion of the connecting rod causes the mounting arm to swing around the support shaft 14, whereby the rake bite 8 is granulated. A reciprocating motion is performed in the radial direction between the center of rotation of the bottom plate of the plate 2 and the side wall. In addition,
The illustrated example shows an example in which two sets of mounting arms are provided.

As the space adjusting means 15 between the rake bite 8 and the bottom plate 6, the swinging mechanism 9 is supported by rotating levers 16 and 16 which are paired up and down, and the other end of the rotating levers is a machine base. An example is shown in which the frame F is supported by the support shaft 17 and the turning lever is turned by an appropriate turning means (not shown), and the distance between the tip of the rake bite 8 and the bottom plate 6 is finely adjusted.

A buffer plate 20 made of a flexible material is attached to the inner surface of the bottom plate 6. The buffer plate 20 is preferably made of, for example, elastic rubber having a required thickness, and is preferably provided over the inner surface of the side wall. As another embodiment, the rubber bottom 20 may be directly coated on the bottom plate 6, or a Teflon sheet may be attached to the inner surface of the side wall. 2 in the figure
Reference numeral 1 denotes a water supply pipe, and the binder and powder are supplied to the granulation dish 2 by appropriate means, and the required water content is given by the water supply from the water supply pipe.

In the above construction, as is well known in the granulation, a coating layer is formed on the inner surface of the granulation dish 2 by the granulation member at the beginning of the operation, and the granulation work is performed. In order to scrape the coating layer from being further laminated, the rake bite 8 reciprocates in the radial direction between the rotation center of the bottom surface of the granulating dish 2 and the side wall by a known method. Next, when the work is completed and the apparatus is stopped, as shown in FIG. 3, the coating layer c which has not been scraped off remains on the front part of the rake bite 8 in the traveling direction.

Even if the work is restarted after the coating layer is cured for a certain period of time in such a state, the coating layer b
Since the buffer plate 20 is made of a flexible material, the fixing force between the plate and the buffer plate 20 is weaker than that of a conventional steel plate, and the rake bite 8 causes a shock during peeling work due to proper bending. As shown in FIG. 4, the coating layer c is easily peeled off together with the coating layer b, which is the lower layer thereof, and neither vibration nor noise is generated. .

The rake bite 8 is held at a position where the coating layer b is left, and the bottom plate is not exposed by the coating layer c. In this state, granulation work is performed, and after the work is finished, it is preferable to make the residual coating layer as thin as possible, and the rake bite 8 is pulled down by the space adjusting means 15 to separate the new coating layer c. Even if the coating layer remains, granulation work can be performed without damage such as mechanical vibration.

[0013]

As described above, according to the present invention, since the flexible buffer plate is provided on the bottom plate, even if the residual coating layer is caught on the rake bit when the operation is restarted, the coating layer can be easily peeled off. It does not hinder driving. Therefore, cleaning work to remove the coating layer at the end of the work is unnecessary, and when the operation is restarted, the residual coating layer is retained on the bottom plate, so the granulation process can be performed immediately and the work efficiency is improved. In addition, the bottom plate is always covered with the coating layer, and it is possible to eliminate the conventional defect such as peeling off the coating layer, exposing the bottom plate by removing the coating layer, and causing abrasion due to the granulation member, etc. Have the effect of.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a bread granulator of the present invention.

2 is a plan view of the granulation dish in FIG. 1. FIG.

FIG. 3 is an explanatory diagram of a coating layer during granulation work.

FIG. 4 is an explanatory view of a correction procedure of a coating layer after completion of granulation work.

FIG. 5 is a vertical sectional view of a bread granulator having a conventional structure.

FIG. 6 is a plan view of the granulation dish in FIG.

FIG. 7 is an explanatory diagram at the time of granulation work in the conventional structure.

[Explanation of symbols]

 1 Bread granulator 2 Granulator 6 Bottom plate 8 Rakebite 20 Buffer plate b Residual coating layer

Claims (1)

[Claims] 1. A granulating member comprising a powder and a powder supplied together with a binder is rolled and granulated by supporting and rotating the granulating plate at an inclination, and at the same time, the granulating member is combined with a bottom plate of the granulating plate. In a pan-type granulator having a rake bite at a predetermined interval, a buffer plate made of a flexible material is provided on the bottom plate of the granulating dish, and the rake bite is formed on the buffer plate. A bread-type granulator, which facilitates scraping and peeling of a coating layer by the granulation member having a required thickness.