JPH08188B2 - Bread granulator - Google Patents

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 one particle 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. Therefore, it is necessary to remove the coating layer at the end of the work,
Such work requires a great deal of time and labor because it relies on a manual work of removing with a spatula, chisel, hammer, and destroying, and the iron plate as a bottom plate may be damaged by the work. Further, at this time, it is difficult to remove only the excess coating layer, and the work is restarted after removing all the residual coating layers required when restarting the operation. Since the initial granulation efficiency was lowered and the granulation member caused a slip in direct contact with the bottom plate, there was damage (a hole might be opened in some cases) due to wear of the bottom plate. 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 such problems, it is an object of the present invention to provide a pan-type granulator which prevents mechanical vibrations and noises and does not require the work of removing the coating layer.

[0005]

The bread granulator of the present invention for achieving the above object comprises a powder which is supplied together with a binder by tiltingly supporting and rotating a granulating 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, the bottom plate of the granulating dish is flexible. A shock-absorbing member made of a flexible material is integrally fixed, and the rake bite is provided with a space adjusting means for finely adjusting the space between the tip of the rake bite and the shock-absorbing member. The gist is that the coating layer formed by the granulating member is formed to a required thickness.

[0006]

In the buffer member integrally fixed to the bottom plate, the degree of bonding with the solidified coating layer is weaker than the degree of bonding with the steel plate. Therefore, when the coating layer protruding with the rotation of the granulating dish is caught on the rake bite, the shock absorbing member is relieved by using a flexible material for the cushioning member, 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. In this case, since the distance between the tip of the rake bite and the cushioning member can be adjusted, the thickness of the residual coating layer that is not peeled off can be adjusted arbitrarily.

[0007]

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 the tip thereof, and the drive shaft 3 is rotated at a predetermined speed by a drive motor 4 through a speed reducer 5 to granulate. The dish 2 is supported on the pedestal 30 with a predetermined inclination angle. The granulating dish 2 is composed of a disc-shaped bottom plate 6 and a side wall 7, and is provided with a rake bite 8 facing the bottom plate 6. This rake bite 8
Are mounted in parallel at the tip of an arm 10 of a swing mechanism 9. This swing mechanism 9 has a crank arm 12 attached to a swing drive motor 11, and a connecting rod 13 is reciprocated by the crank arm 12. The other end of the rake bite mounting arm 10 is engaged with this 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 the bottom plate of the granulating dish 2. It reciprocates in the radial direction between the center of rotation and the side wall. In addition,
The illustrated example shows an example in which two sets of mounting arms are provided.

As a 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 lever is a machine. An example is shown in which the base frame F is supported by the support shaft 17 and the turning lever is turned by an appropriate turning means (not shown).

A cushioning member 20 made of a flexible material is attached to the inner surface of the bottom plate 6. The cushioning member 20 is formed 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,
A Teflon sheet may be attached to the inner surface of the side wall. Reference numeral 21 in the figure denotes a water supply pipe, and the binder and the 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
The fixing force between the cushioning member 20 and the cushioning member 20 is weaker than that of the conventional steel plate due to the cushioning member 20 being made of a flexible material, and an appropriate flexure is generated, so that the rake bite 8 gives an impact during the peeling work. 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. The thickness of the residual coating layer b can be arbitrarily adjusted by providing the rake bite with the space adjusting means 15. 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 cushioning member is integrally fixed to the bottom plate, the coating layer is not peeled off even if the residual coating layer is caught by the rake bite when the operation is restarted. It is easy and does not hinder driving. Therefore, no cleaning work is required to remove the coating layer at the end of the work, and the thickness of the residual coating layer can be adjusted by adjusting the distance between the tip of the rake bite and the cushioning member.
Since the bottom plate retains the residual coating layer of the required thickness, the granulation process can be performed immediately and the working efficiency can be improved, and the bottom plate is always covered with the coating layer. Peel off the coating layer such as, the bottom plate is exposed by the removal of the coating layer,
This has the effect of being able to eliminate the defects that cause wear due to the granulating member.

[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 Cushioning member b Residual coating layer

Claims (1)

[Claims] 1. A granulating member composed of a powder supplied together with a binder is rolled and granulated by supporting and rotating the granulating plate at an angle, and at the same time, the granulating member forms a bottom plate of the granulating plate. In a pan-type granulator provided with a rake bite at a predetermined interval therebetween, a cushioning member made of a flexible material is integrally fixed to the bottom plate of the granulating dish, and the rake bite is formed on the rake bite. Is provided with a gap adjusting means capable of finely adjusting the gap between the tip of the cushioning member and the cushioning member, and a rake bit is used to form a coating layer of a granulating member formed on the cushioning member to a required thickness. Bread granulator.