JPH09187376A - Continuous grain treatment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently conform to requirements to various steamed grains, sanitarily perform the treatment, and realize a power saving with good working efficiency. SOLUTION: In a first steaming part A, a grain preliminarily dipped in water is steamed with a high temperature low humidity steam blowing out from a pipe 11 while carried by a mesh belt 10 to remove the free water on the grain surface. In a second steaming part B, the action for averaging water added state and steamed state by steaming the carried grain layer with a low temperature high humidity steam blowing out from a pipe 12, and also stirring the carried grain layer while spraying and adding water thereto from above the carried grain layer is repeated once or more. In a third steaming part C, the grain is steamed with the high temperature low humidity steam blowing out from the pipe 11 or a heated steam obtained by heating the steam blowing out from the pipe 11 to remove the free water on the grain surface again, whereby the steaming of the finished grain is raised to the best state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous grain processing apparatus for continuously processing grains such as rice using steaming.

[0002]

2. Description of the Related Art Conventionally, there is known a horizontal continuous grain steaming apparatus for sequentially treating a grain layer conveyed on a conveyor with a combination of steam and hot water. The conventional horizontal type continuous cereal steaming device has a so-called two-layer structure in which a room for steaming cereals is further provided inside the outside grain of the device, and steams the cereals only with low temperature and high humidity steam, and The equipment is also cleaned after this work (cooking of cereals) is completed, and the cleaning work is also performed by opening the door of the exterior of the equipment.
In addition, the steaming process is also a steaming process in which the pre-soaked grains are steamed from the beginning to raise the temperature.

[0003]

The steam used when steaming and processing cereals using the horizontal steaming cereal processing apparatus of the above-mentioned prior art is low temperature and high humidity. Satisfactory steamed rice can be obtained by using low-temperature and high-humidity steam when producing white rice, but it cannot be said to be perfect for recent retort foods, mixed rice, foreign rice, etc. The horizontal steamed cereal processing equipment of the technology cannot fully meet the demands for various steamed cereals.

Further, the above-mentioned conventional horizontal steamed grain processing device has a so-called two-layer structure in which a chamber for passing steamed grains such as steamed rice is further provided inside the outside grain of the device, so that the device becomes large and the equipment cost is reduced. However, it is disadvantageous in terms of securing space.

Further, in the horizontal steamed grain processing apparatus of the prior art, since no consideration was given to the inside of the apparatus or cleaning after the steaming processing, these operations could not be said to be easy.

[0006] Therefore, an object of the present invention is to provide a continuous grain processing apparatus which can sufficiently meet the demands for various steamed grains. Another object of the present invention is to provide a continuous cereal processing apparatus which is improved in the quality of steamed cereals, is hygienic, has good working efficiency, and can realize labor saving.

[0007]

The above object of the present invention is achieved by the following constitution. That is, while conveying the grains previously immersed in water with a conveyor belt, the first stage steaming unit for removing free water on the surface of the grains by steaming with steam of high temperature and low humidity, and low temperature. While steaming with humid steam, spraying water from the upper part of the conveyed grain layer and stirring the conveyed grain layer while repeating the action of averaging the watered state and the steamed state once or more, the first stage steaming section The second stage steaming unit provided in the latter stage and the steam for steaming with high temperature and low humidity or superheated low temperature and high humidity steam to remove the free water on the surface of the grain again to improve the finish steaming of the grain to the best condition. A continuous grain processing device comprising a third-stage steaming unit provided after the second-stage steaming unit.

Further, the continuous grain processing apparatus of the present invention can be provided with the following configuration. For example, the steam supply amount of at least one of the low-temperature and high-humidity steam and the high-temperature and low-humidity steam can be adjusted in the steaming section of each stage according to the quality of the steamed cereal and the type of the steamed cereal product. There are two kinds of steam supply means, whichever of the two kinds of steam supply means is used or the use is switched, and the amount of supplied steam is adjusted to adjust not only the white rice but also the retort food, the packed food, the mixed rice, It is possible to properly deal with various foods such as exotic rice.

Further, the second stage steaming section is provided with at least one combination of a watering nozzle for injecting water from the upper portion of the conveyed cereal layer and a loosening machine for the conveyed cereal layer provided at a stage subsequent to the watering nozzle. , Using the drop provided between the conveyor belt that conveys the grain layer from the first-stage steaming section and the conveyor belt that conveys the grain layer to the third-stage steaming section, further inversion and stirring of the grain layer The cooked cereal layer is made uniform in the water state and steamed state in the vertical direction of the cereal layer.

Further, a device for blowing air to remove free water on the surface of the grain pre-immersed in water is provided in the preceding stage of the first stage steaming section. Hot air or warm air is ejected from this air blowing device to remove free water on the surface of the grain,
At the same time, the grains are heated so that the subsequent steaming treatment can be performed in a short period of time.

The steaming section of each stage may be provided with a plurality of cooking chambers divided in the direction of transport of the cereal layer. As a result, by supplying low-temperature high-humidity steam and high-temperature low-humidity steam separately to the same steam chamber, it is possible to use different steam supply and steam quality depending on the steaming needs. The combination of can be changed appropriately.

Further, the bottom of the steaming section of each stage has a sloped surface inclined from the horizontal direction, and the bottom can be opened and closed in a hinged manner to facilitate cleaning, inspection and maintenance of the conveyor belt. It can be carried out. Further, a drain discharge pipe may be provided at the bottom of the bottom slope surface of the steaming section. The steaming section of each stage has a single-layer structure in which the side wall and the ceiling section of the heat insulating structure are provided, so that heat insulation can be achieved and a space-saving, compact continuous grain processing apparatus can be obtained.

Further, the ceiling of the steaming section of each stage can be moved up and down so that the ceiling can be easily moved up and down, and the door on the side surface of the exterior can be opened like the conventional apparatus. Compared to cleaning and inspecting the inside of the steaming room, the space for action is expanded. Further, by making it possible to vertically move the ceiling portion of the steaming section of each stage to adjust the space in the cooking chamber for the conveyed grain layer, the volume of the cooking chamber in which the grain layer is passing, the volume of the grain layer and By limiting the ratio within a certain range, it is possible to eliminate the difference in temperature and humidity in the vertical direction inside the cooking chamber, which is the cause of the imbalance and instability of the finish of the steamed cereals.

Further, the non-conveying portion of the conveyor belt is
For cleaning the conveyor belt, a high-temperature water jetting device, an ultrasonic cleaning device, a high-pressure air jetting device, and a warm air blowing device can be sequentially provided in the transporting direction of the transport belt. Further, a high temperature water jetting device may be provided between the ultrasonic cleaning device and the high-pressure air jetting device in the carrying direction of the carrying belt.

With the cleaning device, high-pressure hot water is first sprayed from the back surface of the conveyor belt by using a nozzle or the like to blow out or soften the residual grains adhering to the inside or front side of the mesh of the conveyor belt to the outside. Then, the ultrasonic cleaning device promotes the detachment of adhering substances from the conveyor belt, and sterilization is also performed. Next, high-pressure hot water is sprayed again to blow away and clean the residual grains that have become easily released. Further, in the next step, air is blown by high-pressure air to remove water droplets attached to the conveyor belt. Next, warm air is blown onto the transport belt from which water droplets have been dropped, and the transport belt is dried and preheated to prepare for actual steaming.

As described above, the cleaning apparatus of the present invention is also characterized in that the conveyor belt can be cleaned and kept warm while the apparatus is in operation, the efficiency of the cooking time of grains can be increased, and the completion of cooking is completed. It is possible to reduce the cleaning time and labor of the subsequent equipment.

As described above, according to the present invention, it is possible to improve the quality of the steamed cereal products and the hygiene, to increase the work efficiency and to save the labor, and to simplify the structure to eliminate the extra heat quantity. Can save energy, save energy,
Equipment costs and installation space can be reduced.

Further, according to the present invention, a change in manufacturing method due to diversification of products can be dealt with by a combination of vapor qualities, and an economic effect can be expected.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic sectional view of a grain steaming apparatus according to an embodiment of the present invention. This grain steaming apparatus is a grain steaming apparatus body composed of a first stage steaming section A, a second stage steaming section B and a third stage steaming section C, and a first stage steaming section A of the grain steaming apparatus body.
Hot-air treatment part D for the input grain connected to the input port for the grain
Consists of

In the first stage steaming section A, free water on the grain surface preliminarily immersed in straight steam (high temperature and low humidity steam) is removed, and in the second stage steaming section B, mainly straight steam (high temperature steam) is used. (Slightly moist steam) is once put in water and re-evaporated to saturated gelatin (low-temperature and high-humidity steam). In the third-stage steaming section C, steam in the second-stage steaming section B is superheated steam or straight steam (high-temperature low-humidity steam) obtained by further heating the saturated steam used in the second-stage steaming section B. Free water generated by the treatment is removed.

As described above, the grain steaming treatment section is roughly divided into the first-stage steaming section A, the second-stage steaming section B, and the third-stage steaming section C, but the first-stage steaming section A and the second-stage steaming section. The boundary of the steaming section B is the position where watering and stirring are started in the second-stage steaming section B in order to start the steaming process of grains in full scale, and the position where the steaming processing with saturated steam ends is the second-stage steaming section B and the third-stage steaming section. The boundary of the steamed portion C is used.

The steamed cereals obtained in the present invention are not intended to finish the cereals into, for example, cooked rice (rice to be eaten as it is), and are subjected to a steaming treatment to a stage where rice has not yet been cooked. Therefore, unlike a steaming device for producing cooked rice, it does not have a hot water immersion treatment step.

The hot air treatment section D is provided with a belt conveyor 1 for introducing the pre-soaked grains into the main body of the grain steaming apparatus, and a hot air discharge nozzle 2 is provided below the reversing section of the belt conveyor 1. Then, the pre-soaked grains are fed from the belt conveyor 1 to the grain feeding hopper 4 connected to the first-stage steaming unit A of the grain steaming apparatus main body, and the reversing portion (tip portion) of the belt conveyor 1 and the hopper A cover 3 is provided to cover the upper part of the cover 4 and prevent the hot air blown from the hot air discharge nozzle 2 from leaking to the outside. Although a head is provided between the tip of the belt conveyor 1 and the hopper 4, even if hot air is applied to the pre-soaked cereal falling in this head, the cover 3 prevents the cereal and hot air from scattering to the outside. Can be prevented.

Since the conventional continuous cooking apparatus of this type steams the grains after pre-soaking with steam from the beginning, steam is first used to raise the product temperature of the grains, and then the original steam is used. A steaming process is performed. Therefore, the processing time of the steaming process becomes long and the processing space must be large.

On the other hand, in the grain steaming apparatus of the present invention, when the pre-soaked grains are charged into the hopper 4 of the grain steaming apparatus main body by the belt conveyor 1, for example, the grain at the tip of the belt conveyor 1 is used. Since the hot air processing unit D having the hot air discharge nozzle 2 over the entire fall width is provided along the lower surface of the conveyor 1 toward the falling portion, it is possible to blow hot air to the falling grain toward the hopper 4. It is possible to raise the product temperature of cereals.

In order to increase the efficiency of raising the temperature of the grain, a cover 3 having a certain length is provided from the entire inlet of the hopper 4 and the tip of the belt conveyor 1 in the direction opposite to the traveling direction of the conveyor 1. To be provided. Further, hot air is also sent from a hot air discharge device (not shown) to a casing 6 (adjacent to a steam chamber 7 described later) for receiving a mesh belt 10 for laterally transporting raw material grains under the input hopper 4 and transporting the same. Hot air is also blown to the raw material grains immediately before the steaming at the start portion and the raw material grains in the hopper 4 located above them so as to raise the product temperature.

Immediately before entering the steaming process, the pre-soaked grains are heated with hot air to have a heat amount, free water on the grain surface is removed, and after the steaming process, the grains are changed by heat. So to speak, the process of grain preheating can be shortened. The length of the steam chamber 7 can be shortened by reducing the ratio of the time zone of such a grain preheating process, which leads to the shortening of the installation space working time zone.

Further, hot air may be used instead of the hot air. A mesh belt 10 in which the pre-soaked grains input from the hopper 4 are conveyed to the first-stage steaming section A.
Is provided. A plurality of steam chambers 7 are arranged below the mesh belt 10 on which the pre-soaked cereal layer is conveyed, and steam supply pipes 11 and 12 are arranged in each of the steam chambers 7. The pipes 11 and 12 are divided into two stages, an upper stage and a lower stage, so that low temperature and high humidity vapor is supplied to the upper stage pipe 12 and high temperature and low humidity vapor is supplied to the lower stage pipe 12.

As shown in the plan view of the first-stage steaming section A in FIG. 3 and the side view in FIG. 4, the upper and lower two pipes 11 and 12 are provided.
Has its longitudinal direction arranged in parallel with the transportation direction of the cereal layer, and is connected to each other at both longitudinal ends,
It is connected to the steam main. Therefore, the steam main 14 for supplying low temperature and high humidity steam and the steam main 1 for supplying high temperature and low humidity steam
The steam supplied from 5 is supplied from both ends of each row of the pipes 11 and 12 in the longitudinal direction. Each pipe 11,
As shown in the cross-sectional view of FIG. 6, a pair of downward nozzles 16 and 16 are oriented in two directions in the longitudinal portion of 12,
Many are provided. Further, as shown in FIG. 3, the upper and lower two pipes 11 and 12 are arranged so that the longitudinal portions thereof do not overlap in the vertical direction.

Here, in order to supply the steam evenly over the entire area of the first-stage steaming section A from all the nozzles 16, the diameters of the central portions of the vipes 11 and 12 in the longitudinal direction are set to be equal to those of both ends. Smaller than diameter, or steam main 14,
This is dealt with by making the diameter of the pipe farther from 15 smaller than the diameter of the closer pipe. Also, by adjusting the opening diameter of the nozzles 16, it is possible to uniformly eject the steam from all the nozzles 16 over the entire area of the first-stage steaming portion A.

The first-stage steaming section A has pipes 11 and 12.
Is divided into a plurality of steam chambers in the longitudinal direction. The longitudinal directions of the pipes 11 and 12 are arranged so as to pass through a partition wall 18 (see FIG. 3) that constitutes each steam chamber 7.

Taking the structure of the first-stage steaming section A as an example, steam quality for steaming is supplied to the same steam chamber 7 separately as low-temperature high-humidity steam and high-temperature low-humidity steam. As a result, when steaming is required only when using conventional low-temperature steam, when low-temperature steam is suppressed and high-temperature steam is mixed to raise the temperature, and steam with low humidity is steamed, high-temperature, low-humidity steam is used. The pipes 11 and 12 can be selectively used when only one is used or when a large amount of steam is required.

That is, in the above case, the upper pipe 1
In the case of using only 1, the amount of steam ejected from the upper pipe 11 is reduced, and the amount of high temperature and low humidity vapor from the lower pipe 12 is increased. In the case of 1, only the lower pipe 12 is used, and in the case of 1, the upper and lower pipes 11 and 12 are used in a fully opened state or a state close thereto.

The amount of steam ejected from each of the pipes 11 and 12 is adjusted by the opening / closing degree of the flow control valves (not shown) of the steam main pipes 14 and 15. In this way, it is possible to provide the grain layer with an appropriate amount of steam and its temperature and humidity for various purposes.

In FIG. 3, a plurality of horizontal partition plates 18 (8 in the figure) are provided in each steam chamber 7 of the first-stage steaming section A over the entire cross section of the steam chamber 7 in a direction orthogonal to the pipes 11 and 12. The steam chambers 7 are attached at intervals according to their roles. By providing a plurality of steam chambers 7 in the first-stage steaming section A by the horizontal partition plate 18 in this way, steam is not biased on the upper surface of each steam chamber 7. Further, at the start and end of the transportation of the grain layer by the mesh belt 10 (see FIG. 1), the steam is prevented from collecting and escaping from the surface of the mesh belt 10 on which the raw grain is not placed, and in the grain steaming device. For the important part of steaming during the steaming process of cereals, pipes 11 and 1
The positions of the steam injection small holes 2 are collected in a large number in that portion, and the interval between the partition plates 18 is narrowed so that the steam having a certain pressure is passed through the mesh belt 10 and hits the raw material grain layer.

Further, by arbitrarily setting the interval between the partition plates 18 and 18, it is possible to separately set the steaming priority section of the cereal layer and the non-steaming section. A fan 19 (see FIG. 1) for exhausting steam is provided at the foremost portion of the first-stage steaming section A and the rearmost portion of the third-stage steaming section C.

In FIG. 1, an endless mesh belt 10 is stretched between rollers 21 over the first stage steaming section A and the front stage section of the second stage steaming section B, and the rear stage section of the second stage steaming section B is also provided. An endless belt-shaped mesh belt 23 is stretched between the rollers 24 also between the third stage steaming section C, and the height of the mesh belt 10 is set higher than the height of the mesh belt 23. There is a head. Therefore, the grain layer conveyed from the mesh belt 10 is agitated and inverted when falling on the mesh belt 23, so that the quality of the final product can be made uniform.

A crusher 25 for loosening the grain layer is provided in each of the front stage portion, the middle stage portion and the rear stage portion of the second stage steaming section B, and a watering nozzle for adding steamed grains is provided in front of these crushers 25. 26 are provided. The feed speed of the crusher 25 is mesh belt 10,
A slightly higher than 23 feed rate is needed to loosen the cereal layer. In addition, the mesh belts 10 and 2
3 and a mechanism capable of varying the feed speed of the crusher 25 are also provided.

Further, as shown in FIG. 5, the bottom portion 28 of each steam chamber 7 is provided with a slope with respect to the horizontal plane so that the drain can be collected on one side of the bottom portion 28 of the steam chamber 7 and drained from the drain pipe 31. To be able to discharge. Further, the steam chamber bottom 28 is configured to be openable / closable by using a hinge 29 or the like so that the bottom 28 stops at an opening angle at which the steam chamber inner side wall 30 and the bottom 28 can be washed. As a result, it is possible to surely clean the fall residue from the space between the mesh belts 10 and 23, and when the steam chamber 7 is in use, a packing is provided between the periphery of the bottom portion 28 and the steam chamber side wall 30. By sandwiching (not shown) and tightening with the latch 32, the steam chamber 7 can be closed.

In the first-stage steaming section A, as shown in FIG. 2, a steamed cereal passage portion (steaming grain) having a side wall 33 and an upper lid 34 which are formed in a housing structure having a heat insulating material (not shown) inside is provided. (Chamber) 35 is provided adjacent to the upper portion of the steam chamber 7.

The upper lid 34 is of a batch automatic winding type. The upper lid 34 that constitutes the ceiling of the steamed cereal passage portion (steaming chamber) 35 is a pillar 36 a provided along the side wall 33 of the housing.
The crosspiece 36b is horizontally passed at the top of the column to form a gate-shaped support column 36 (in FIG. 1, three stages are provided at the front and rear stages of the steaming parts A to C, respectively).
An example is shown in which a place is provided. ) Is provided.

A shaft 37 extending to both ends in the longitudinal direction of the front or rear of the steaming section is rotatably passed through the center of the crossing bar 36b of the support column 36, and the shafts 37 at the three support columns 36 are inserted into the shaft 37. Pulleys 38 (see FIG. 2) are provided respectively, and ropes 41 for hoisting the upper lid 34 are provided on the pulleys 38 through a pair of rollers 40 symmetrically provided on the horizontal crosspiece 36b near the top of the pillar 36a. Connected. Also, 3
A drive unit 42 (Fig. 1) such as a motor is provided on the center column 36 of the columns 36 of the book, and the pulley 38 is rotated by rotating the shaft 37 by the driver 42 to lift the upper lid 34. be able to. in this way,
When the driving machine 42 is driven in the direction in which the upper lid 34 is lifted, the rope 41 is wound by the rotation of the pulley 38, and each of the support columns 36.
When the pulleys 38 are simultaneously operated, the upper lid 34 is lifted upward while maintaining the horizontal state.

With the upper lid 34 raised, the steaming chamber 35
In order to keep the open state, a pin (not shown) or the like may be inserted into the support column 36 and the upper lid 34 may be fixed to the support column 36, or the original position (the side wall 33 of the cooking chamber 35).
When the upper lid 34 is returned to the (supporting position), the pin is pulled out and the driving machine 42 is operated in the opposite direction. During the cooking of cereals, the outer surface of the side wall 33 of the cooking chamber 35 and the upper lid (ceiling)
If a method of pulling and fixing the side surface of 34 with a latch or the like is adopted, the cooking chamber 35 is kept in a sealed state.

In the conventional horizontal type grain cooking apparatus of this type, although the door of the side portion of the exterior is opened and the cooking chamber arranged inside is washed and inspected and repaired, the space for action is limited. Because it was being done, the workability was poor. However, according to the apparatus of the present invention, the upper lid (ceiling part) 34 of the cooking chamber 35 is rolled up in a lump, so that the inspection, cleaning, and repair of the cooking chamber 35 after the completion of the cooking work can be performed easily and in a wide range. You will be able to do it.

Further, the conventional horizontal type grain cooking apparatus has a so-called two-layer structure in which a cooking chamber for passing the cooked grains is further provided inside the outer shell of the apparatus, which is usually used as a cooking means for grains. Since there is no device outer shell, the whole horizontal grain steaming device becomes large. However, the horizontal grain steaming apparatus of the present invention eliminates the outer shell of the conventional apparatus that also served as air insulation, and makes the steaming chamber 35 one layer structure, and the side wall 33 and the upper lid (ceiling part) 34 are made of a heat insulating material to prevent external heat radiation. It is also characterized in that it has a heat-insulating housing structure using, and because it is a single layer structure, the equipment cost can be kept low, and it is smaller than the conventional example with a two-layer outer shell structure. Since this can be done, the heat dissipation area is also reduced. Further, the heat radiation amount can be suppressed by applying heat insulation processing to the outer surfaces of the side wall 33 and the upper lid (ceiling portion) 34. Moreover, since the structure of the cooking chamber 35 is simple, not only the cooking chamber but also other parts are cleaned, inspected,
It can be easily repaired.

Further, in the cereal steaming apparatus of the present invention, in order to minimize the temperature difference in the vertical direction in the steaming room 35, which is the cause of imbalance and instability of the finish of steamed cereals, the steaming room 35 in which the cereal layer is passing is eliminated. The volume of the grain layer is limited within a certain range by the ratio to the volume of the grain layer, and the cross-sectional area A of the grain layer passing through the inside of the cooking chamber 35 and the upper portion thereof in the diagram of the vertical cross section of the cooking chamber shown in FIG. B of the space enclosed by the side and top of the
By limiting / A within a certain numerical range, the steam that has passed between the steamed cereals from the lower steam chamber 7 stays in the space and maintains the temperature and humidity state of the upper surface of the steamed cereals,
From both the top and bottom sides, on average, stable cooking can be achieved.

The size of the steam room 35 during the steaming process is determined by the amount of steamed food (raw material grains) passing through, and the ratio B / A is preferably set to 3 to 4. However, the value of the ratio B / A may be somewhat different depending on the type of the cereal raw material to be steamed and the steaming method.

As a result, the raw material grains passing through the steaming sections A to C are not only vapors which have passed between the mesh belts 10 and 23 on the bottom surface, but also the raw material grains are retained in the upper chamber of the cooking chamber 35 after the passage. The amount of heat is still held by a space of an appropriate size that suppresses heat dissipation, the pressure is maintained to some extent, and steam from which heat dissipation is suppressed is cooked from the top surface as well as under the conditions similar to the steam from the bottom surface. A more uniform and optimum steaming can be obtained.

By the way, particularly hard rice such as exotic rice cannot be completely cooked by a series of the above-mentioned steaming treatments only once, and after the treatment process up to the third stage steaming section C, the first rice is again treated. A double steaming process is repeated from the first stage steaming unit A to repeat the steaming process. Also, such as packed food,
If it needs to be heat-processed again just before eating, it should be made into steamed rice that is pregelatinized and has an appropriate water content. Therefore, for raw rice that needs to be steamed with saturated steam for a long time, the block of the second stage steaming section B is made relatively long to increase the steaming time. Also, for those that require that the amount of free water adhering to the grain surface be suppressed to a certain degree or less, it is necessary to lengthen the block of the third-stage steaming section C to a relatively long time for treatment here.

As described above, the present invention provides an apparatus in which the lengths of the steaming sections A to C in the grain conveying direction are changed according to the quality of the raw material grains, the type of the target cooked grain product, and the like. You can In addition, changes in manufacturing methods due to product diversification can also be handled by combining the quality of steam.

Next, a cleaning device for the mesh belts 10 and 23 of the grain steaming device of the present invention will be described. The cleaning device for the mesh belts 10 and 23 is provided in the return process (grain non-conveying portion) of the mesh belts 10 and 23 that discharges the steamed grains from the mesh belts 10 and 23.

As shown in FIG. 1, the cleaning device is provided with a cleaning water tank 46 having an ultrasonic cleaning device 45 attached thereto, a hot water injection device 47 for injecting high pressure hot water in the preceding stroke and the subsequent stroke thereof, and the high pressure hot water injection in the latter stage. A high-pressure air injection device 49 is installed in the rear stroke of the device 47, and a warm air blowing device 50 is installed in the last stroke.
It is composed of a series of cleaning methods incorporating.

In the cleaning device, first, high-pressure hot water is first applied to the mesh belts 10 and 2 by using the hot water injection device 47.
The residual grains adhering to the inside or the front side of the meshes of the mesh belts 10 and 23 are jetted from the back surface of No. 3 to fly outward or soften. The mesh belts 10 and 23 are moved to the ultrasonic cleaning device 45 arrangement portion, but the ultrasonic cleaning device 45 is arranged in the water tank 46, and the mesh belts 10 and 23 pass through the water stored in the water tank 46. While working, the mesh belts 10 and 2 are operated by the ultrasonic cleaner 45.
3 promotes the release of deposits and sterilization treatment.

After passing through the ultrasonic cleaner 45, the mesh belts 10 and 23 exit from the water storage surface, and then high-pressure hot water is sprayed from the back surface of the mesh belt 10 by the hot water spraying device 47 to blow away the residual grains that are easily released. ,to clean up. After that, in the next step, the mesh belt 10, as in the previous step, by the high-pressure air injected from the air injection device 49,
Moistened hot air is blown from the back surface of 23 to remove the water droplets adhering to the mesh belts 10, 23.

Next, the mesh belt 1 from which water drops have been dropped
The hot air blowing device 50 blows hot air onto the Nos. 0 and 23 from the upper part or the lower part to dry and preheat to prepare for actual steaming.

The above-mentioned cleaning device is also characterized in that the mesh belts 10 and 23 can be cleaned while the grain steaming device is operating. Moreover, if this cleaning device is used, all the cleaning work is performed on the return stroke side of the mesh belts 10 and 23, so there is no effect on the grain steaming side.
Therefore, the washing device can be operated even during the cooking of the grains, and the mesh belt does not become clogged even after the cooking of the grains for a long time. Therefore, the product quality is improved and the hygiene is improved. Can be improved. In addition, since the mesh belts 10 and 23 are heated during the cleaning,
The mesh belts 10 and 23 are transferred to the grain steaming process while being kept warm. Therefore, the efficiency of cooking time of cereals can be increased, and the cleaning time and labor of the equipment after completion of cooking can be reduced.

The preceding steaming section covering the first-stage steaming section A and the second-stage steaming section B has been mainly described above, but the second-stage steaming section B and the third-stage steaming section C have the same structure as the latter steaming section. The steaming part of is constructed.

Further, a high temperature and low humidity steam supply system is provided in the first stage steaming section A and the second stage steaming section B of the continuous grain processing apparatus of FIG. 1 and a superheated steam supply system is provided in the third stage steaming section C. A schematic view of the case is shown in FIGS. 8 to 12, in FIGS.
The members having the same functions as those of the members and devices described in FIG. 6 are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 8 is a plan view of the third-stage steaming section C, FIG. 9 is a side view thereof, and FIG. 10 is a view taken along the line CC in FIG. A heat exchange pipe 52 is provided outside the units 11 and 12.

As shown in the steam supply system diagram of FIG. 12, the steam of high temperature and low humidity is supplied from the boiler 53 to the first stage steaming section A and the second stage steaming section B, but the second stage steaming section B is used. The low-temperature and high-humidity steam that has become saturated steam is supplied from the boiler 53 to the third-stage steaming section C through the steam cleaner 54. At this time, as shown in FIG. 11 (a view taken along the line DD in FIG. 8), the third steaming section C is provided with a heat exchange pipe 52 with fins 51 provided below the supply pipe 12. Heat exchange pipe 5
Since high-temperature steam is supplied to the inside of the boiler 2 from the boiler 53, the high-temperature and low-humidity steam jetted from the steam jet nozzle of the heat exchange pipe 52 is overheated. In this way, the free water on the grain surface is removed by superheated steam in the third stage steaming section C. As shown in FIGS. 11 to 13, the heat exchange pipe 52 is provided with a steam inlet 55 and a steam drain 56.

High-temperature and low-humidity steam is supplied from the boiler 53 to the first-stage steaming section A and the second-stage steaming section B, while steam is supplied from the boiler 53 to the second-stage steaming section B and the third-stage steaming section C. The low-temperature and high-humidity steam that has become saturated steam through the cleaner 54 is supplied. At this time, the supply pipes 11, 1 are provided in the third steaming section C.
A heat exchange pipe 52 with a fin provided below 2 is provided. Since high temperature steam is supplied from the boiler into the heat exchange pipe 52, the high temperature and low humidity steam ejected from the steam ejection nozzle of the heat exchange pipe 52 is overheated. In this way, the free water on the grain surface is removed by superheated steam in the third stage steaming section C.

The heat exchange pipe 52 for such superheat of steam
Is the first stage steaming section A or the second stage steaming section B, if necessary.
You can also set it.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional side view of a grain continuous processing apparatus according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1 (put in FIG. 1) in the direction of the arrow in the cooking chamber.

3 is a plan view of a steam chamber of the continuous grain processing apparatus of FIG. 1. FIG.

FIG. 4 is a side view from the drain port side (A-A line in FIG. 3).

5 is a front view from the high-pressure low-humidity steam supply side (line BB) of FIG. 3. FIG.

FIG. 6 is a sectional view of a steam outlet portion of a steam supply pipe.

FIG. 7 is a diagram illustrating a ratio between a spatial cross-sectional area of a steam chamber and a passing grain layer cross-sectional area of the continuous grain processing apparatus of FIG. 1.

8 is a plan view of a steam chamber of another embodiment of the continuous grain processing apparatus of FIG. 1. FIG.

9 is a side view from the drain port side (line BB) of FIG.

FIG. 10 is a front view from the high-pressure low-humidity steam supply side (CC line) of FIG. 8.

11 is a view taken along the line DD of FIG.

FIG. 12 is a schematic diagram for explaining a steam supply pipe in a steam chamber and a steam supply system to the pipe according to another embodiment of the present invention shown in FIG.

[Explanation of symbols]

1 Belt Conveyor 2 Hot Air Discharge Nozzle 3 Cover 4 Grain Input Hopper 6 Casing 7 Steam Chamber 10, 23 Mesh Belt 11, 12 Steam Supply Pipe 14, 15 Steam Main Pipe 16 Nozzle 18 Horizontal Partition Plate 19 Steam Exhaust Fan 21 Roller 25 Crusher 26 Watering nozzle 28 Steam chamber bottom 29 Hinge 32 Hook 33 Steaming chamber side wall 34 Steaming chamber top cover 36 Strut 37 Shaft 38 Pulley 40 Roller 41 Rope 42 Drive 45 Ultrasonic cleaner 46 Water tank 47 Hot water spray device 49 Air injection Equipment 50 Hot air blowing equipment 52 Heat exchange pipe 53 Boiler 54 Steam cleaner A First stage steaming section B Second stage steaming section C Third stage steaming section D Hot air processing section

Claims (9)

[Claims] 1. A first-stage steaming unit for removing free water on the surface of a grain by the preliminary dipping by performing a steaming treatment with steam of high temperature and low humidity while transporting a grain previously dipped in water by a transport belt. And, while steaming with low-temperature and high-humidity steam, spraying water from the upper part of the conveyed cereal layer and stirring the conveyed cereal layer while watering, repeating the action of averaging the watered state and the steamed state one or more times,
The second-stage steaming unit provided after the first-stage steaming unit and steam with high-temperature and low-humidity steam or superheated low-temperature and high-humidity steam remove the free water on the surface of the grain again, and the best finishing steaming of the grain is best. And a third-stage steaming unit provided after the second-stage steaming unit for improving the above state. 2. The supply amount of at least one of low-temperature high-humidity steam and high-temperature low-humidity steam to the steaming section of each stage can be adjusted according to the quality of the steamed cereal and the type of the steamed cereal product. 2. The continuous grain processing apparatus according to claim 1, further comprising a means for supplying the two types of steam that can be used. 3. The second stage steaming section is provided with at least one combination of a watering nozzle for injecting water from the upper portion of the conveyed grain layer and a conveyor grain layer loosening machine provided at a stage subsequent to the watering nozzle. Furthermore, a drop is provided between a conveyor belt that conveys the cereal layer from the first-stage steaming section and a conveyor belt that conveys the cereal layer to the third-stage steaming section. Continuous grain processing equipment. 4. A device for blowing air in order to remove free water on the surface of the grain pre-immersed in water is provided in a stage prior to the first stage steaming section.
The continuous grain processing device according to any one of 1. 5. The continuous grain processing device according to claim 1, wherein each stage of the steaming section is provided with a plurality of cooking chambers divided in the transport direction of the grain layer. 6. A steam generator according to claim 1, wherein the bottom of each steaming section has a sloped surface inclined from the horizontal direction, and the bottom is hingedly openable and closable. The continuous grain processing device described. 7. The continuous grain processing apparatus according to claim 1, wherein the steaming portion of each stage has a single-layer structure in which a side wall and a ceiling portion of a heat insulating structure are provided. 8. The continuous grain processing apparatus according to claim 1, wherein the ceiling of the steaming section of each stage is of a hanging type that is vertically movable. 9. A high temperature water jetting device, an ultrasonic cleaning device, a high pressure air jetting device and a hot air blowing device are sequentially provided in the grain non-transporting portion of the transport belt in the transport direction of the transport belt for cleaning the transport belt. The continuous grain processing device according to any one of claims 1 to 8, characterized in that.