JPS5815112B2 - A roasting machine with a structure that prevents the objects to be roasted from sticking - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a roasting machine for barley tea, brown rice tea, green tea, haujicha, etc., and in particular prevents the roasted material from sticking (scorching) in a rotary roasting machine. This relates to the structure of

When processing this kind of material to be roasted, it is placed in a rotating roasting drum or roasting pot and roasted for a certain period of time.

In this process, sand heated to about 400 degrees Celsius is mixed into the object to be roasted, and the heat of the sand is used to roast the object.

However, with this method, granular sand gets mixed into the product, and especially in this type of product, since the product is a food product, mixing sand into the product is not sanitary and is subject to recent legal restrictions. I ended up receiving it.

For this reason, conventionally this sand actively moves the roasted material,
The effect that prevented this from adhering (scorching) to the roasting surface disappears, and the lower part of the stacked roasted materials (which is in contact with the surface of the roasting drum) becomes scorched. This also caused the problem.

In addition, in the case of a new device devised by the present inventor in which protrusions for promoting roasting are formed in place of sand that aids roasting, it is expected that further scorching will occur, so countermeasures will be taken. has become necessary.

The present invention was made to solve these problems, and its feature is that a large number of steel balls are circulated together with the material to be roasted in the roasting drum, and the impact caused by the transfer causes the material to be roasted to be This is to prevent baked goods from sticking to the roasting drum (burning).

The present invention will now be described in detail based on the illustrated embodiments. Reference numeral 1 denotes a roasting machine according to the present invention, which is referred to as a rotary set.

For example, this product has a hopper, a conveyor,
A feeding device 2 for the roasted material A consisting of a chute is attached, and a receiving device for the roasted material after roasting (hereinafter referred to as product A') is provided at a later stage, although not shown.

As an example, the roasting machine 1 has main devices housed in a housing 3 having a semicircular cross section at the top, and a roasting drum 4 is rotatably supported above.

This roasting drum 4 has a cylindrical shape, and one side is an inlet 5 for the roasted material A, and the other side is an outlet 6.

The end faces of either side are cut out in order to clearly show the internal structure in the diagram, but in reality, in order to prevent the internal hot air from escaping wastefully, or on the outlet side, the product or the The end face is somewhat closed to prevent the anti-wearing steel ball from falling.

On the side of the take-out port 6, a product take-out screen body 7 is provided integrally with the roasting drum 4, and a collecting section 8 for adhesion prevention steel balls, which will be described later, is provided in series.

On the other hand, inside the roasting drum 4, for example, a spiral guide plate 9 is continuously provided from the input port 5 to the output port 6.

Along with this, there are many roasting promotion protrusions 1 inside the roasting drum 4.
Many 0's are planted.

This is a rod-shaped body made of metal (usually iron), but there are also examples in which it is hollow.

That is, as shown in FIG. 2, there is also a roasting promotion protrusion 10 which is hollow and whose tip is closed.

Incidentally, this is preferable in that when the roasting promotion protrusion 10 is made hollow as will be described later, hot air can enter into the hollow part 10' and heat it effectively.

Further, inside the roasting drum 4, a device 11 for preventing adhesion of the roasted material A as described below is provided.

This device is designed to circulate and use anti-fouling steel balls 12, and a steel ball return pipe 13 is provided in the center of the roasting drum 4.

This is a tapered pipe with a larger diameter on the input port 5 side, and has a drop port 14 on the input port 5 side, while a recovery trough 15 is provided in the steel ball return pipe 13 on the output port 6 side. The tip rotates while rubbing against the inside of the collecting section 8.

This turning may be done together with the steel ball return pipe 13, or only the collection trough 15 may be made alone.

Alternatively, the whole (recovery trough and steel ball return pipe) may rotate together with the torrefaction drum.

However, steel balls 1 for preventing adhesion in the roasting drum 4 of the lever
The circulation mechanism of No. 2 is not necessarily limited to this embodiment, and the circulation mechanism of No. 2 is not necessarily limited to this embodiment.
What is necessary is to transport the torrefied rice to the input port using a suitable packet conveyor or the like, and then introduce it into the roasting drum 4 again.

Furthermore, this device is provided with a mechanism that performs the following heating action.

That is, there is a constant heating space 16 between the roasting drum 4 and the housing 3.
As an example, several combustion gas guide plates 17 are provided to partition the heating space 16.

A burner 18 as a heat source is installed below the housing.

The hot air from the burner 18 is moved by the combustion gas guide plate 17 in a zigzag pattern as indicated by the arrow H in the figure to uniformly heat the area around the roasting drum 4.

However, the following equipment is provided to discharge the hot air.

Reference numeral 19 is an exhaust duct, and the - part is the roasting drum 4.
The exhaust gas is collected from the rear end and flows around the upper part of the pear housing to join the chute 2a in the above-mentioned supply device 2.

Incidentally, this causes the chute 2a to be preheated by the exhaust hot air.

An exhaust fan 20 is installed above this chute 2a according to the usual method.
A cooling shower 21 is provided at the front stage thereof.

The present invention has the configuration as described above,
It works as follows to process the roasted material.

First, when starting the operation, the burner 18 is ignited and the roasting drum 4 is rotated to heat it.

At this time, this hot air flows as shown by arrow H and heats up.

When the roasting drum is heated to a state where it can be processed, the to-be-roasted material A is fed into the roasting drum 4 from the supply device 2.

In such a case, the material to be roasted A will come into contact with the inner surface of the roasting drum 4 and be heated, and will also come into contact with the roasting promotion protrusions 10 installed therein, resulting in more effective processing. be.

That is, as shown in FIG. 3, even if the roasted material A is in a stacked state, the roasting promotion protrusion 10 moves to push through the layers, so that the roasted material A can be processed evenly. It is.

The roasted material A thus roasted is guided by the guide plate 9 and processed toward the outlet 6.

Thereafter, the product becomes product A', which falls downward from the product removal screen barrel 7 and is taken out.

Incidentally, such roasted material A in the roasting step A may be scorched on the inner surface of the roasting drum 4 when it is heated from the roasting action part, but at this time, it may be mixed into the roasting drum 4 and roasted. The anti-adhesion steel balls 12 rolling with the rotation of the roasting drum 4 collide with the roasted objects A and act to peel them off.

Particularly in the case of the present invention, in which the roasting promoting protrusion 10 is present on the inner surface of the roasting drum 4, the roasted material A is likely to be scorched, and such a device is more preferable.

When the anti-fouling steel balls 12 gradually reach the exit side together with the product, they do not fall on the product retrieval screen barrel 7, but reach the collection section 8, where they are collected by the rotation of the collection trough 15, and the steel balls are returned. It is returned to the input port through the pipe 13 and is gradually used for circulation.

As described above, the present invention utilizes the transfer action of the steel balls by mixing them in the roasting drum to actively move the roasted material, thereby preventing adhesion (sticking). This is what I did.

Therefore, the labor required for maintenance and inspection of the device is reduced, and since the roasting surface is kept clean at all times, a favorable roasting action can be expected.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view showing the roasting machine of the present invention;
The figure is a sectional view showing another embodiment of the roasting promoting protrusion in the present device, and FIG. 3 is a sectional view showing the state during the roasting action. 1: Roasting machine, 2: Supply device, 3: Housing, 4: Roasting drum, 5: Inlet, 6: Outlet, 8: Collection section, 10: Protrusion for promoting roasting, 11: Preventing adhesion Device, 12: Steel balls for anti-fouling, 13: Steel ball return pipe, 14: Drop opening, 15 Two collection troughs.

Claims (1)

[Claims] 1. A roasting drum is rotatably supported with respect to a casing, hot air is passed around the outer periphery of the roasting drum to heat the roasting drum, and the material to be roasted is introduced from an input port of the roasting drum. In an apparatus in which the roasted material is gradually processed and the product is taken out from the take-out port, a steel ball return pipe is provided in the roasting drum from the take-out port side to the input port side, and the steel ball return pipe A collection trough for scooping up steel balls is rotatably attached to the outlet side of the pipe, while a drop port is opened on the input side.
A steel ball for preventing adhesion is dropped from the drop port onto the bottom of the input port side of the roasting drum, and the steel ball for preventing adhesion is rolled into the roasting drum and circulated to the outlet. A roasting machine having a structure that prevents the objects to be roasted from sticking. 2 The roasting drum is rotatably supported against the casing, hot air is passed around the outer periphery of the roasting drum to heat the roasting drum, the material to be roasted is introduced from the input port of the roasting drum, and the material to be roasted is gradually heated. In this apparatus, a steel ball return pipe is provided in the roasting drum from the take-out port side to the input port side, and a steel ball return pipe is provided on the take-out port side of the steel ball return pipe. A collection trough that scoops up steel balls is rotatably attached, and a drop port is opened on the input port side.
A steel ball for preventing adhesion is dropped from the drop port onto the bottom of the input port side of the roasting drum, and the steel ball for preventing adhesion is rolled into the roasting drum and circulated to the outlet, and further roasted. A roasting machine having a structure to prevent objects to be roasted from adhering, characterized in that a number of protrusions for promoting roasting are formed on a drum.