JPH08103260A - Continuous roaster and method for continuous roasting - Google Patents

Abstract

PURPOSE: To obtain continuously roasted (roasted and parched) materials of grains or raw materials having a regular shape of constant quality without any unevenness in the food processing field. CONSTITUTION: Hot air at a prescribed temperature is fed to a jumping layer to roast grains or pelletlike raw materials, etc., in stage of charging the grains or raw materials onto a mechanically vibrated deck 32, vibrating the grains or raw materials and thereby moving the grains or raw material on the deck 32 at a prescribed speed (for a prescribed time) while jumping, mixing and reversing the grains or raw materials. The grains or raw materials are roasted and the simultaneously advanced jumping layer is cooled on the same deck to take out the treated materials, which are further classified to afford the roasted materials of constant quality.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous roasting apparatus and a continuous roasting method suitable for roasting or roasting grains or raw materials having a certain shape in the form of pellets.

[0002]

2. Description of the Related Art Conventionally, as a roasting apparatus and a roasting method for roasting various grains such as soybeans and peanuts, a swinging method in which a batch type is directly heated and shaken is known. However, there are many problems such as inconsistent quality, easy occurrence of uneven roasting and kogation, skill required for operation, poor thermal efficiency, and poor working environment. In addition, there is also a rotating drum system in which sand, calcium carbonate, etc. are used as a heat medium in the rotating drum and roasting the roasted rice, soybeans, soy sauce wheat, and mashed raw material with hot air is available. There was an adverse effect that foreign matter such as sand used as a heating medium was mixed.

FIG. 6 shows a flow chart of a conventional sand roasting method. In the figure, reference numeral 1 denotes a roasting target, for example, wheat as a raw material from which contaminants have been selected, and this wheat 1 is put into a raw material wheat silo 2. A conveyor 3 is provided at the lower end of the silo 2, a predetermined amount of wheat 1 drops onto the conveyor 3, and the wheat 1 moved up by the bucket conveyor 4 is again stored in the intermediate silo 5 and again the intermediate silo 5 It is conveyed to the position of the hopper 6 via the conveyor 3 arranged at the lower end of the. The belt conveyor 3 arranged at the lower end of the hopper 6 puts an appropriate amount of wheat necessary for roasting into the raw material inlet 8 of the roasting machine 7.

On the other hand, sand as a heat medium 9 for roasting wheat is put into a sand silo 10, and a predetermined amount of this sand 9 is dropped on a conveyor 3 and moved up by a bucket conveyor 4, and a hopper 6 is used. After being charged into the sand blasting furnace, it is conveyed to the charging port of the sand burning furnace 11 via the conveyor 3 arranged at the lower end of the hopper 6.

A screw 12 is rotating in the sand burning furnace 11 so that the sand 9 is pushed out onto the conveyor 3 arranged at the lower end of the sand burning furnace 11 and heated by the fuel 14 The sand 9 is heated by the hot air from 13, and the heated sand 9 is conveyed to the heat medium charging port 15 of the roasting machine 7 by the conveyor 3 and charged into the roasting machine 7. Roasting machine 7
The heat medium sand 9 and the raw material wheat 9 are mixed by the screw 18 which is rotatably rotated via the motor 16 and the transmission means 17, the wheat 9 is roasted, and the discharge port 19 of the roasting machine 7 is provided. Then, it is put on the separator 20.

The mixture of wheat to be roasted and heated sand, which has been put into the separator 20, is separated and roasted based on the difference in specific gravity, particle size and the like. 21
The heated sand is taken out from the heat medium discharge port 22 and is again put into the sand silo 10 via the return conveyor 24 and the like.

The roasted wheat 26 from which foreign substances and the like have been selectively removed from the roasted body removing machine 25 is conveyed to the fermentation device 27 and the like in the next step. The hot air sent from the hot air generating furnace 13 to the sand burning furnace 11 is returned to the hot air generating furnace 13 via the path 28 again for the reuse of heat in the same manner as the heated sand.

[0008]

In the conventional continuous roasting apparatus and continuous roasting method described above, the sand and the roasted material such as wheat are separated by a separator or the like. There was an unavoidable problem of mixing foreign matter such as sand. In addition, a large silo and a sand calcination furnace are required to convey and heat sand as a heat medium, and a separator or the like is required to separate the product and the heat medium. There were many problems in that it required space and continuously roasted wheat and the like.

The present invention is intended to provide a continuous roasting apparatus and a continuous roasting method which solve the above-mentioned problems, and the object of the present invention is to provide a roasting apparatus which is used in the food processing field or the intermediate raw material processing step. It is possible to obtain a system capable of uniformly roasting a product free of foreign matter in a small space during continuous processing of roasting (roasting) and efficiently sorting (classifying) the product.

[0010]

In order to achieve the above object, the continuous roasting apparatus of the present invention applies mechanical vibration to the object to be roasted 1 as shown in the example of FIG. , A jumping vibration imparting means 30 for forming a jumping layer that jumps forward while mixing and reversing the to-be-processed object 1, and a jumping vibration imparting means for providing hot air and / or cold air provided at the lower stage of the jumping vibration imparting means 30. An air blower 31 for blowing into the blower 30 and a hood 32 that collects hot air and / or cold wind from the jumping vibration imparting means 31 to prevent scattering of dust from the roasting target 1 in the jumping vibration imparting means 30. It is equipped with.

In the continuous roasting method of the present invention, as shown in the example of FIG. 3, mechanical vibration is applied to the object to be roasted 1 to mix and invert it to make it leap forward to stabilize. And a step of continuously roasting the jumping layer that has been jumped forward by blowing hot air directly onto the jumping layer of the object to be roasted 1.

Further, a raw material supplying means for continuously supplying a constant amount of the object to be roasted to the vibration jumping means of the continuous roasting device, and a hot air or / and a cold air for supplying the hot air and / or the cold air to the air blowing means. And a cold air generating means and a dust collecting means arranged on the side of the exhaust port from the hood. Further, it is characterized in that cold air is blown into the jump layer of the object to be roasted continuously roasted in the jump layer to continuously cool it. Still further, the jump layer is roasted or /
And a cooled classifying means for classifying the roasted object to be roasted in the jumping layer.

[0013]

According to the continuous roasting apparatus and continuous roasting method of the present invention, the object to be roasted, which is a raw material of a fixed shape such as grain or pellet, is mechanically vibrated to leap forward to mix and reverse. In addition, since the roasting is performed by blowing directly into the jumping layer of the roasted object that has been jumped forward with hot air, it is possible to maintain a constant quality without producing kogation, etc. Roasting can be performed safely and efficiently without requiring skill.

[0014]

EXAMPLES A continuous roasting apparatus and a continuous roasting method according to the present invention will be described below with reference to FIGS. Products to be roasted used in the present invention include wheat, soybeans, peanuts, rice, soy sauce barley, synthetic rubber, styrene resin, powdered cheese, in addition to roasting in the food processing field of grains such as rice flour (rice). Bread crumbs,
It can be used in the process of drying or cooling a certain shape of raw material such as starch flakes, carbon, foundry sand, dye, etc., but about the roasting device and method when using grain grains as the raw material Details.

FIG. 1 shows a front view and a right side view of a roasting apparatus used in the present invention, and FIG. 2 shows an overall perspective view of the roasting apparatus of the present invention.

In FIGS. 1 and 2, reference numeral 30 denotes a continuous roasting device as a whole, which is a blower means consisting of a lower casing, that is, a plenum 31, and a deck 32 constituting jumping vibration imparting means. The hood 33 is composed of an upper housing.

The plenum 31 is mounted on a frame frame having a vibration proof rubber 36 at its lower end, and vibration motors 34, 34 are arranged at substantially central positions of the front and rear side plates of the plenum 31. Air inlets 35 are formed on the left and right sides of the front and rear side plates.

The hood 33 is arranged so as to cover the upper side of the plenum 31, and is a roof type housing having a plurality of cylindrical air outlets 37 provided in the ceiling portion.

The object to be roasted 1 is introduced from the raw material inlet 39 arranged on the left side of the hood 33 and placed on the deck 32 which constitutes a jumping vibration imparting means. The deck 32 disposed inside the intermediate position between the hood 33 and the plenum 31 is formed into a rectangular shape or a wavy shape, and the vibration of the vibration motor 34 vibrates and mixes the roasting target object 1 placed on the deck. A roasting product outlet is provided at the right end of the plenum by roasting the wheat layer, which is the roasting treatment body 1, in which the grains such as wheat move in sequence while hopping with hot air The hot air for roasting is sent from the air inlet 35 and discharged from the air outlet 37 provided in the upper hood 33.

If necessary, cool air may be blown from the air inlet 35A provided on the right side of the front and rear side surfaces of the plenum 31,
The roast to-be-processed object 1 that has been roasted is cooled while jumping forward on the deck, and the cooled roasted object 1 is discharged from the roasted product outlet 40.

The roasting method of the present invention in the case of continuously roasting grains using the roasting device 30 having the above-mentioned structure will be described with reference to the process chart of FIG.

The components indicated by reference numerals 30 to 40 in FIG.
Since the components are substantially the same as those shown in, the corresponding parts are designated by the same reference numerals and the duplicate description is omitted, but in this example, the wheat that is roasted at the same time as the roasting of wheat by hot air is used in the deck 3
2 is provided on the right end side of the front and rear side plates of the plenum 31 and the air inlet 35A for introducing cooling air for continuous cooling is provided on the left end side of the front and rear side plates. In addition, a blocking plate 42 is provided in the plenum 31 for avoiding mixing of hot air and cold air.

Similarly, the hood 33 side is also provided with an air outlet 37A for discharging cold air and an air outlet 37 for discharging hot air, and is of the same construction as in FIGS.

41 is a raw material hopper into which the wheat to be roasted 1 is put, and the raw material is dispersed by a disperser 43 arranged at the lower end of the raw material hopper 41 and dropped onto a raw material supply feeder 44. The raw material is continuously charged onto the deck 32 by opening the valve 45 at the raw material inlet 39 of the roasting device 30.

The vibration motor 34 attached to the front and rear side plates of the plenum 31 is driven and controlled by a motor drive circuit 46 including an inverter circuit and the like.

The deck 32 is mechanically vibrated by the vibration motors 34, 34, and the deck 3 is vibrated.
The wheat on top 2 jumps, flips, and is mixed with the raw material inlet 39
The jump layer (the grain layer that moves while jumping, reversing, and mixing) moves and advances from the direction toward the raw material outlet 40.

Such a jump layer is roasted by hot air having a constant temperature blown from the hot air blower 48. For this purpose, the hot air formed in the hot air oven 47 is sent to the air inlet 35 via the hot air blower 48 and the blowing duct. The hot-air stove 47 is configured to burn fuel to obtain hot air having a constant temperature and send the hot air to the hot-air blower 48. The hot air temperature is controlled by the control panel 55 so that the temperature of the hot air stove is maintained at a constant temperature and the hot air stove 47 It is performed near the blower port of the blower 48. Further, the control panel 55 also controls the fuel on-off valve 50.

The jump layer of the object to be roasted, which jumps forward on the deck 31 and moves in the hot air at a constant temperature at a constant forward speed, has a constant roasting time and repeats mixing and reversal by vibration. Therefore, there is no unevenness in roasting, and the temperature is set so as not to cause kogation. Table 1 below shows temperature conditions during roasting of various grains.

[0029]

[Table 1]

Next, the roasted jump layer advancing on the deck 32 is continuously cooled by blowing cold air from the air inlet 35A through the cool air blower 49, and is roasted and cooled from the raw material outlet 40. The to-be-roasted object 1 is led out onto the classifier 50 by opening the valve 45.

The classifier 50 has a function of separating the dust contained in the grain and the roasted food 1 having a predetermined size or less, and only the roasted food 1 having a predetermined grain size or more is continuously supplied. It is designed to be discharged separately.

Further, in this example, the hot air and / or the cold air discharged from the air outlets 37 and 37A is used to effectively utilize the heat energy of the roasting target 1 treated with the hot air and / or the cold air. / And return to the cold air blower 49.

That is, the hot air is supplied from the air outlet 37 to the hot air dust collector 51 through a duct or the like to remove the dust and sent to the hot air blower 53, and the hot air from the hot air blower 53 is exhausted through the duct. At the same time, a part of the air is returned to the hot air blower 48 to reuse the hot air.

The cold air discharged from the air outlet 37A also passes through the duct and after the dust is removed by the cold air dust collector 52, the cold air blower 5
4 and is exhausted. This exhaust gas may be returned as cold air to the cold air blower 49 side for reuse.

In the above-mentioned roasting method, roasting and cooling were continuously carried out on the deck, but as shown in FIG.
In the same structure as shown in FIG. 4, only the roasting target 1 discharged from the raw material outlet 40 is roasted inside, and the cooling is performed by supplying only the cooling air to the air inlet 35. The roasting device 30 (for which the hot air blower 48 of FIG. 4 is a cold air blower 49 and a hot air oven 47 is removed) may be inserted into the raw material inlet 39 for cooling. Incidentally, FIG.
In the configuration, only hot air is returned to the hot air blower 48 side via the hot air dust collector 51.

The one shown in FIG. 5 performs continuous roasting and cooling by performing hot air blowing for roasting and cold air blowing for cooling, but the discharged hot air is simply discharged through the blower 53. The equipment can be made extremely simple in this configuration.

[0037]

According to the continuous roasting apparatus and continuous roasting method of the present invention, a jump layer of a roasting target such as grains is formed by mechanical vibration, and the jump layer is mixed and inverted on the deck. Is moved at a constant speed, and hot air of a constant temperature is supplied to the roasting to perform roasting, so that there is no unevenness in roasting and it is possible to obtain an object to be roasted of constant quality. Furthermore, since no heat medium such as sand is used, no foreign matter is mixed into the product, which is hygienic and causes few troubles. In particular, the fuel cost of this example is significantly lower than the amount of heat required to heat sand etc., and various equipment necessary for transporting the heat medium can be omitted,
It can be installed in a small space. In addition, the operating conditions are simple and there is no need for skill as compared to the batch type, and the hot air is a circulating type to save energy, and the working environment is improved because it is processed in a closed system path. Further, the product can be classified in the continuous roasting processing system, further improving the quality.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a roasting device of the present invention.

FIG. 2 is an external view showing an example of a roasting device of the present invention.

FIG. 3 is a process diagram showing a direct roasting method of the present invention.

FIG. 4 is another process drawing of the direct roasting method of the present invention.

FIG. 5 is another process drawing of the direct roasting method of the present invention.

FIG. 6 is a process diagram of a conventional roasting method.

[Explanation of symbols]

 30 Roasting device 32 Deck 34 Vibration motor 41 Raw material hopper 48 Hot air blower 49 Cold air blower 50 Classifier

Claims (5)

[Claims] 1. A jumping vibration imparting means for imparting mechanical vibration to an object to be roasted to form a jumping layer that jumps forward while mixing and reversing the object to be roasted, and the jumping vibration imparting means. Blower means for blowing hot air or / and cold air into the jumping vibration imparting means provided in the lower stage, and hot air or / and cold air from the air blower means provided in the upper stage of the jumping vibration imparting means are collected, A continuous roasting device comprising: a hood for preventing dust and dust from scattering from the object to be roasted in the jumping vibration imparting means. 2. A step of imparting mechanical vibration to a roasting target, mixing and reversing it to jump forward to form a stable jumping layer, and blowing hot air directly onto the jumping layer of the roasting target. A continuous roasting method comprising a step of continuously roasting the jumping layer that has been jumped forward by. 3. A raw material supply means for continuously supplying a constant amount of the object to be roasted to the vibration jumping means of the continuous roasting device, and hot air or / and cold air for supplying hot air and / or cold air to the air blowing means. The continuous roasting device according to claim 1, further comprising: a cool air generating unit and a dust collecting unit disposed on an exhaust port side of the hood. 4. The continuous roasting method according to claim 2, wherein cold air is blown into the jump layer of the object to be roasted continuously roasted in the jump layer to continuously cool the jump layer. 5. The method according to claim 2, wherein the roasting and / or cooled roasting layer in the jumping layer is supplied to a classifying means for classifying the roasted object to be roasted. 1
The continuous roasting method described in the item.