JP5687011B2 - Grain material watering method and grain material watering apparatus - Google Patents

Description

  The present invention relates to a watering treatment prior to pressure steaming processing of grain materials such as defatted soybeans, pressed soybeans, and cracked soybeans.

  When the grain raw material is subjected to pressure steaming, various kinds of processing are required prior to the pressure steaming. For example, in the raw material treatment facility of Patent Document 1 below, the grain raw material is subjected to pressure steaming treatment through watering treatment and subsequent preheat treatment. More specifically, the raw material treatment facility of Patent Document 1 includes a watering device that sprinkles hot water while stirring, a preheating device that preheats in a steam atmosphere under atmospheric pressure, and a pressure steaming treatment in a steam atmosphere. Equipped with a pressure steaming device, the grain raw material is continuously transferred and processed sequentially.

  When the grain raw material is continuously steamed under pressure, it is important to uniformly heat and keep the grain raw material. If this is lacking, N-type and S-type (accumulated acetic acid) due to undenaturation may be seen in the grain raw material that has been subjected to pressure steaming treatment, or over-denaturation may occur and the nitrogen dissolution utilization rate may decrease. In order to ensure a uniform temperature rise and heat retention of the cereal raw material, the state of the cereal raw material in the watering process preceding the pressure steaming process becomes a problem.

  Specifically, when a grain lump is formed during the watering treatment, warm water does not reach the inside of the baby lump, causing the water to become uneven. Further, since air is present inside the baby boom, it is not possible to ensure uniform temperature rise and heat retention of the grain raw material in the subsequent preheat treatment and pressure steaming treatment. Therefore, the nodule formation of the cereal raw material generates a difference in the degree of progress of the denaturation between the cereal raw materials after the pressure steaming treatment.

  In recent years, nodule formation in watering treatment has become a particular problem. Specifically, it is as follows. Most of the defatted soybeans, mainly used as cereal raw materials for soy sauce brewing, have been sorted by particle size and shape. On the other hand, in recent years, defatted soybeans that are insufficiently selected and contain a large amount of powder have come to be used.

  The defatted soybean containing a large amount of powder is not stable in quality because the particle size is uneven or cracks during transportation, causing specific gravity separation. Moreover, since many powder was contained, it became easy to produce watering nonuniformity within a watering apparatus. This is because the grain raw material is characterized in that the powder absorbs water quickly and the granule absorbs water slowly.

  Furthermore, the biggest problem is that the powder that has absorbed water quickly and becomes excessively thickened increases in viscosity and adheres to the surface of the grains of the grain raw material in the watering device, and finally a large nodule is formed. In this case, the grain raw material inside the baby boom remains insufficiently sprinkled, and it becomes difficult to uniformly raise the temperature and keep the temperature in the preheating device and the pressure steaming device. As a result, a difference in the degree of progress of the denaturation between the grain raw materials occurs between the surface portion and the inside of the baby boom, resulting in problems due to the undenatured and over-denatured grain raw materials.

  Similar problems also occur with grain raw materials such as pressed soybeans and cracked soybeans. That is, when the grain raw material is subjected to processing such as pressing and crushing, powder is generated in the process to form an aggregate with the granules.

  On the other hand, various methods and apparatuses have been proposed in order to prevent the formation of lumps of grain raw materials. For example, Patent Document 2 below proposes a method in which heated soybeans are discharged under atmospheric pressure to obtain puffed defatted soybeans, which are treated with a high-speed stirring type watering device. Further, Patent Document 3 below proposes a method in which when a grain raw material is supplied into a steaming can, a high-speed air current collides with the nodule of the grain raw material and is dispersed.

Japanese Patent No. 3397901 JP-A-3-201962 Japanese Patent Publication No.55-25817

  However, the high-speed agitation-type water adding device described in Patent Document 2 is an apparatus for adding water to puffed defatted soybeans that have undergone heat treatment in superheated steam and release to atmospheric pressure. There was no description about prevention of nodule formation of grain raw material in the preceding watering treatment.

  Further, Patent Document 3 describes a technique for crushing a once formed baby boom, and there is no description about preventing baby boom formation in advance. On the other hand, in Patent Document 3, there is a description of the watering process preceding the pressure steaming process, but the baby boom that collides with the high-speed airflow is described as being formed in the rotary valve that has finished the watering process. Yes. That is, Patent Document 3 does not describe the formation of nodules in the watering process, and the technique described in Patent Document 3 was not intended to process a grain raw material containing a large amount of powder.

  Therefore, even if the grain raw material is an aggregate of powder and granules, it is possible to prevent grain formation of the grain raw material by watering treatment and to ensure the quality after the pressure steaming process. And the sprinkler for grain raw materials was examined.

  As a result of the examination, the developed watering method for cereal raw material of the present invention is a method of watering a cereal raw material to be sprinkled with respect to the cereal raw material to be transported with continuous stirring prior to the pressure steaming treatment. The amount of sprinkling received by the grain raw material is changed by changing the amount of water sprayed from the sprinkling pipe or by changing the transfer speed of the grain raw material by the transfer means on the upstream side and the downstream side with respect to the flow direction of the grain raw material. And

  Further, the developed grain raw material sprinkling apparatus of the present invention is a grain raw material sprinkling apparatus for spraying a grain raw material, which is transferred to a grain raw material that is transported with continuous stirring prior to the pressure steaming process. A sprinkling pipe for sprinkling the raw material and a transfer means for transferring the grain raw material while stirring, a change in the amount of water sprayed from the sprinkling pipe in the flow direction of the grain raw material, or a grain by the transfer means in the flow direction of the grain raw material It is characterized in that the amount of sprinkling received by the grain raw material can be changed on the upstream side and the downstream side with respect to the flow direction of the grain raw material by changing the transfer speed of the raw material.

  According to the present invention, by controlling the amount of water sprayed on the grain raw material on the upstream side and the downstream side with respect to the flow direction of the grain raw material, the powder part of the grain raw material can be prevented from becoming excessively watery at an early stage. This makes it possible to prevent the formation of nodules in which the grains of the grain raw material adhere to each other through the powder. If baby boom formation is prevented, water spray will spread throughout the grain raw material, and water spray unevenness will be prevented. In addition, a uniform temperature rise and heat retention can be secured in the subsequent pre-heat treatment and pressure steaming treatment. Therefore, according to the present invention, by preventing the formation of agglomerates of cereal raw materials, a difference in the degree of progress of modification among cereal raw materials, and deterioration of quality due to unmodified or over-denatured cereal raw materials are prevented.

  In the present invention, in order to change the amount of water the grain raw material receives on the upstream side and the downstream side, the specifications of the watering pipes and transfer means provided in the watering device arranged prior to the pressure steaming treatment of the grain raw material Can be realized. For this reason, the prevention of agglomeration of grain raw materials according to the present invention can also be realized by a specification change utilizing existing facilities.

  As described above, the present invention is particularly useful when the object to be sprayed is a grain material containing powder. Therefore, in the watering method of the present invention, the grain raw material is a powder having a fast water absorption and a particle having a slow water absorption. It is an aggregate of the body, and it is preferable to prevent excessive formation of water in the powder part of the grain raw material on the upstream side and prevent formation of the nodule of the grain raw material due to a change in the amount of water sprayed by the grain raw material on the upstream side and the downstream side .

  In the watering method of the present invention, it is preferable to increase the amount of water sprayed on the grain raw material on the downstream side rather than on the upstream side. According to this configuration, since the amount of sprinkling on the upstream side is small, it is possible to prevent the powder portion of the grain raw material from becoming excessively moisture early. At the same time, while the water absorption of the powder part is progressing, the water absorption of the granule also proceeds, and the powder with excessive moisture adheres to the granule leaving the dry part on the surface, forming a nodule. It will be prevented. It is preferable that the watering ratio between the upstream side and the downstream side is 20:80 to 40:60.

  In the present invention, in order to change the amount of water sprayed by the grain raw material on the upstream side and the downstream side, the following method and apparatus may be mentioned. The various methods and apparatuses described below use a watering pipe and a transfer means provided in a watering device arranged prior to the pressure steaming treatment of the grain raw material.

  Specifically, in the watering method of the present invention, a plurality of watering pipes are provided along the flow direction of the grain raw material, and the amount of water sprayed from each watering pipe is changed so that the grain raw material is distributed upstream and downstream. You may make it change the amount of watering to receive. In addition, the watering device that performs the watering treatment is a multi-stage type that connects a plurality of devices that can be watered independently, and the amount of watering that the grain raw material receives gradually changes from the upstream side to the downstream side. May be.

  In the watering device of the present invention, a plurality of watering pipes are provided along the flow direction of the grain raw material, and the watering amount of each of the watering pipes is changed to change the watering amount received by the grain raw material on the upstream side and the downstream side. You may make it make it. In order to adjust the amount of water sprayed from each individual sprinkling pipe, a valve or a flow meter may be provided in the water supply piping to adjust the amount of water supplied to each watering pipe. In addition, a plurality of devices, which are a combination of a sprinkling pipe and a transfer means, are connected to form a multistage system, and the amount of sprinkling received by the grain raw material is changed for each of the devices, and the grain raw material is received from the upstream side toward the downstream side. You may make it change a watering amount in steps.

  According to the present invention, agglomeration of grain raw material is prevented by changing the amount of water sprayed by the grain raw material on the upstream side and downstream side with respect to the flow direction of the grain raw material. As a result, water spray is spread over the entire grain raw material, and uneven water spray is prevented. In addition, a uniform temperature rise and heat retention can be secured in the subsequent pre-heat treatment and pressure steaming treatment. Therefore, according to the present invention, by preventing the formation of agglomerates of cereal raw materials, a difference in the degree of progress of modification among cereal raw materials, and deterioration of quality due to unmodified or over-denatured cereal raw materials are prevented. Furthermore, this invention is realizable by the specification of the watering pipe with which the watering apparatus is equipped, and a transfer means, and can also be implement | achieved also by the specification change using existing equipment.

The block diagram which shows one Embodiment of the grain raw material processing equipment containing the watering apparatus which concerns on this invention. The enlarged view of the watering pipes 6a and 6b shown in FIG. The block diagram which shows another embodiment of the watering apparatus which concerns on this invention. The enlarged view of the watering pipes 6a and 6b shown in FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a grain raw material processing facility including a watering device according to the present invention. In FIG. 1, the grain raw material processing facility 1 includes a watering device 2, a preheating device 3, and a pressure steaming device 4. First, an outline from when the grain raw material 20 is input to the grain raw material processing facility 1 until it is discharged will be described.

  The grain raw material 20 is thrown in from the inlet 11 provided in the sprinkler 2a. The grain raw material 20 thrown into the watering device 2a is transferred to the outlet 12 while being continuously stirred by the watering screw 5a as a transfer means. The grain raw material 20 being transferred is sprinkled with warm water sprinkled from the sprinkling pipe 6a.

  The grain raw material 20 transferred to the discharge port 12 is input into the sprinkler 2b through the discharge port 12. In the sprinkler 2b, the grain raw material 20 is transferred to the discharge port 13 while being continuously stirred by the sprinkler screw 5b as a transfer means. The grain raw material 20 being transferred is sprinkled with warm water sprinkled from the sprinkling pipe 6b.

  The grain raw material 20 transferred to the discharge port 13 is input into the preheating device 3 through the discharge port 13. In the preheating device 3, the grain raw material 20 is preheated while being stirred by the preheating screw 14. The grain raw material 20 transferred by the preheating screw 14 is put into the pressure cooking apparatus 4 through the rotary valve 15. In the pressure cooking apparatus 4, the grain raw material 20 is subjected to pressure steaming treatment in a steam atmosphere while being transported while being loaded on the net 16. The grain raw material 20 after the pressure steaming process is discharged from the pressure steaming device 4 through the rotary valve 17.

  Here, in this embodiment, the grain raw material 20 thrown into the grain raw material processing facility 1 will be described as an example of an aggregate of powder and granules. Examples of the grain raw material that can be an aggregate of powder and granules in this way include defatted soybeans, pressed soybeans, and cracked soybeans. The powder usually has a diameter of about 1 mm or less, although it varies depending on the type of grain material. Sprinkling will cause the grain material to absorb water. In this case, the powder portion absorbs water quickly and the particle portion absorbs water slowly.

  Excessive water powder increases in viscosity, and tends to adhere to the granules having a dry portion on the surface. In this case, the granules are bound one after another through the powder to form a nodule. When a baby boom is formed, warm water does not reach the inside of the baby boom, causing the water spray to become uneven. Further, since air is present inside the baby boom, it is not possible to ensure uniform temperature rise and heat retention of the grain raw material in the subsequent preheat treatment and pressure steaming treatment. Accordingly, if the preheating device 3 and the pressure steaming device 4 are processed while the nodules are formed, a difference in the degree of progress of the denaturation between the grain raw materials occurs, and there is a problem of quality deterioration due to undenaturation or over-denaturation of the grain raw materials. Will occur.

  In this embodiment, in the watering treatment, the formation of baby boom is prevented by changing the amount of water sprayed on the grain raw material 20 on the upstream side and the downstream side with respect to the flow direction of the grain raw material 20. Hereinafter, the watering treatment will be specifically described. In the present embodiment, the watering device 2 is a two-stage system composed of a watering device 2a on the upstream side (raw material supply side) and a watering device 2b on the downstream side (raw material discharge side). As described above, the grain raw material 20 is transferred to the upstream watering device 2 a and the downstream watering device 2 b in this order, and is sent to the preheating device 3.

  The watering screws 5a and 5b, which are transfer means, are obtained by spirally winding screw blades around a rotating shaft. The screw blade is partially provided with a protrusion for stirring the grain raw material 20. As the rotary shaft rotates, the screw blades rotate together, and the grain material 20 is transferred while being stirred.

  A watering pipe 6a is provided above the watering screw 5a, and a watering pipe 6b is provided above the watering screw 5b. FIG. 2 shows an enlarged view of the watering pipes 6a and 6b. The watering nozzle 10 is arrange | positioned along the axial direction of the watering pipe 6a at the watering pipe 6a. Each of the water spray nozzles 10 is formed with a water spray port 18, and the hot water supplied to the water spray pipe 6 a is sprayed from the water spray port 18 of the water spray nozzle 10. The water sprinkling pipe 6b has the same configuration. Moreover, although the example which attached the watering nozzle 10 to the watering pipe 6a, 6b demonstrated in FIG. 2, the watering nozzle is not restricted to what attached the exclusive parts for watering to a pipe, but formed the watering port in the pipe itself. It may be. In addition, the watering nozzles 10 may be arranged at a uniform pitch or at different pitches. The same applies to the configuration of FIG. 4 described later.

  In FIG. 1, hot water from a pump 8 is supplied to the watering pipes 6a and 6b. In the configuration of FIG. 1, the watering amount from the watering pipe 6 a and the watering amount from the watering pipe 6 b can be different. Specifically, it is as follows. The total amount of hot water supplied to the sprinkling pipes 6 a and 6 b is the amount of hot water supplied from the pump 8. This hot water supply amount can be measured by the flow meter 7a. The hot water from the pump 8 is divided into a flow toward the watering pipe 6a and a flow toward the watering pipe 6b through the flow rate adjusting valve 9. The flow rate of the flow toward the sprinkling pipe 6b is measured by the flow meter 7b. The motor of the flow meter 7b and the flow rate adjusting valve 9 are interlocked, and the opening degree of the flow rate adjusting valve 9 is adjusted so that the flow rate toward the watering pipe 6b can be secured.

  When the flow rate supplied to the sprinkling pipe 6b is set, the flow rate supplied to the sprinkling pipe 6a becomes the remaining amount obtained by subtracting the flow rate supplied to the sprinkling pipe 6b from the total amount of hot water supplied from the pump 8. . According to this configuration, the total amount of hot water supplied from the pump 8 can be distributed to the watering pipe 6a and the watering pipe 6b at different ratios.

  Here, if the amount of water spray is large at an early stage of the water spraying process, the powder portion will have excessive moisture before the water absorption sufficiently proceeds to the granules of the grain raw material 20. The powder having excessive moisture adheres to the granule leaving the dried portion, and a nodule is formed. In this embodiment, the amount of water sprayed from the downstream water sprinkling pipe 6b is made larger than the amount of water sprayed from the upstream water sprinkling pipe 6a. This reduces the amount of watering at an early stage of the watering treatment and prevents the formation of a nodule of the grain raw material 20.

  More specifically, by reducing the amount of water sprayed from the upstream water sprinkling pipe 6a, it is possible to prevent the powder portion of the grain raw material 20 from excessively moisture early. That is, while the water absorption of the powder part is progressing, the water absorption of the granule also proceeds. For this reason, in the watering apparatus 2a, the powder with excessive water content is prevented from adhering to the granule having a dry part on the surface, and the formation of a nodule is prevented. As a result, water spray is spread over the entire grain raw material 20 and uneven water spray is prevented.

  Therefore, the grain raw material 20 which does not have a baby boom formation and does not have uneven watering is put into the downstream watering apparatus 2b. In the sprinkler 2b, the grain raw material 20 receives water from the sprinkling pipe 6b. Since the grain raw material 20 thrown into the water sprinkler 2b has already sprinkled all over, the grains have also absorbed water to the extent that there are no dry parts on the surface. For this reason, even if the grain raw material 20 is sprinkled again, the powder portion is less likely to adhere to the granules, and the formation of baby boom is prevented.

  On the other hand, the grain raw material 20 is re-watered in the sprinkler 2b, so that it can receive hot water of a sprinkling amount necessary for the sprinkling treatment. The sprinkling amount from the upstream sprinkling pipe 6a is smaller than the sprinkling amount from the downstream sprinkling pipe 6b, but the total sprinkling amount necessary for the sprinkling treatment is supplied from the pump 8. Therefore, when the grain raw material 20 passes through the downstream watering device 2b, the water of the amount of watering required for the watering treatment is received without excess or deficiency. That is, in this embodiment, the formation of baby boom in watering treatment is prevented without increasing or decreasing the total amount of watering required for watering treatment.

  Therefore, the grain raw material 20 which passed through the watering apparatus 2 which concerns on this embodiment is sprinkled with the required amount of watering, and the formation of baby boom is prevented. For this reason, watering unevenness is prevented, and uniform temperature rise and heat retention can be secured in the subsequent pre-heat treatment and pressure steaming treatment. Therefore, the difference in the degree of progress of the modification between the grain raw materials 20 and the quality deterioration due to the undenatured and over-denatured grain raw materials are prevented.

  In the present embodiment, the watering amount from the upstream watering pipe 6a and the watering amount from the downstream watering pipe 6b are changed. However, if this change changes in at least two stages on the upstream side and the downstream side, Good. On the other hand, the watering amount may be gradually changed for each watering nozzle 10 by changing the length and diameter of the watering pipes 6a and 6b or by changing the shape of the watering nozzle 10. In this case, the amount of sprinkling will change into multiple stages of three or more stages. Moreover, in FIG. 1, although the watering apparatus 2 is made into 2 sets of the watering apparatuses 2a and 2b, you may change the amount of watering in multiple steps as 3 sets or more.

  Further, in the present embodiment, the amount of water the grain raw material 20 receives on the upstream side and the downstream side by changing the amount of water sprayed from the upstream water spray pipe 6a and the amount of water sprayed from the downstream water spray pipe 6b. Although an example of changing is described, it is not limited to this configuration. For example, by making the transfer speed of the grain raw material 20 by the downstream sprinkling screw 5b slower than the transfer speed of the grain raw material 20 by the upstream sprinkling screw 5a, the amount of sprinkling received by the grain raw material 20 is downstream from the upstream side. More sides. Adjustment of such a transfer speed should just change the rotational speed of the watering screw 5a and the watering screw 5b. Moreover, the transfer speed | rate of the grain raw material 20 can be changed by making the pitch of the screw blade | wing of the watering screw 5a and the watering screw 5b into different magnitude | sizes.

  FIG. 3 is a block diagram showing another embodiment of the watering apparatus according to the present invention. The watering device 2 shown in this figure can be used in combination with the preheating device 3 and the pressure steaming device 4 as with the watering device 2 shown in FIG. In FIG. 1, the watering device 2 has a two-stage configuration, whereas in FIG. 3, the watering device 2 has a one-stage configuration. In FIG. 3, two watering pipes 6 a and 6 b are arranged in series along the flow direction (arrow a) of the grain raw material 20 in the watering device 2. In the watering device 2, a watering screw 5c, which is a transfer means, is disposed. The watering screw 5c has the same configuration as the watering screws 5a and 5b shown in FIG. 1, but has a longer length in the direction of the rotation axis.

  FIG. 4 shows an enlarged view of the sprinkling pipes 6a and 6b in FIG. The watering pipes 6a and 6b in FIG. 4 have the same configuration except that the arrangement is different from the watering pipes 6a and 6b in FIG. That is, the watering nozzle 10 in which the watering port 18 is formed is also attached to the watering pipes 6a and 6b in FIG.

  In FIG. 3, the piping path connecting the pump 8 and the sprinkling pipes 6a and 6b is the same as the piping path of FIG. For this reason, also in the watering device 2 of FIG. 3, the watering amount from the upstream watering pipe 6a and the watering amount from the downstream watering pipe 6b can be changed similarly to the watering device 2 of FIG. . Therefore, also in the watering device 2 of FIG. 3, the watering amount from the upstream watering pipe 6a is made smaller than the watering amount from the downstream watering pipe 6b to prevent the formation of a nodule of the grain raw material 20 on the upstream side. However, it is possible to supply the grain raw material 20 with a sufficient amount of hot water necessary for the watering treatment without excess or deficiency.

  3 is the same as the embodiment of FIG. 1 in that the amount of water sprayed from the water spray pipes 6a and 6b only needs to change in at least two stages on the upstream side and the downstream side. In addition, the number of sprinkling pipes may be three or more, and the amount of sprinkling may be changed in multiple stages. Furthermore, you may make it change the amount of sprinkling which the grain raw material 20 receives on the upstream and downstream sides by changing the transfer speed of the grain raw material 20. In this case, the pitches of the screw blades of the watering screw 5c in FIG. 3 may be different sizes on the upstream side and the downstream side. 3 and 4 show a configuration in which the watering pipe 6a and the watering pipe 6b are separated from each other, a structure in which the watering pipe 6a and the watering pipe 6b are integrated may be used. In this case, the arrangement of the watering nozzle 10 is changed between the upstream side and the downstream side, or the shape of the watering nozzle 10 is changed to change the amount of watering on the upstream side and the downstream side.

  As mentioned above, although this invention was demonstrated referring embodiment, this invention uses the watering pipe and the transfer means with which the watering device arrange | positioned prior to the pressure cooking process of the grain raw material is equipped. Therefore, for example, the configuration of FIG. 1 can be realized by newly adding a watering device and piping equipment to the existing one-stage watering device. In addition, the configuration of FIG. 3 can also be realized by replacing the watering pipe or changing the piping equipment in the existing one-stage watering device. Therefore, the present invention can be realized by a specification change utilizing existing facilities.

  Hereinafter, the present invention will be described more specifically with reference to examples. The watering apparatus which concerns on an Example is the structure similar to the watering apparatus 2 of FIG. 3, and combined and used the apparatus of the structure similar to the preheating apparatus 3 and the pressure steaming apparatus 4 of FIG. In FIG. 3, the grain raw material 20 is defatted soybean, which is a raw material of soy sauce, and is defatted soybean imported from India, which is non-GMO (a crop not genetically modified). This defatted soybean is uneven in particle size and contains a large amount of powder. The defatted soybean was sprayed with a capacity of 4 ton / Hr. The time for the defatted soybeans to stay in the water sprinkler 2 is 2 minutes, the amount of water sprayed during that time is 5.2 ton / Hr, and the sprinkling ratio corresponds to 130% of the weight of the defatted soybeans. Moreover, the temperature of the warm water sprayed was 80 degreeC.

  In FIG. 3, defatted soybean (cereal raw material 20) was introduced from the inlet 11 and supplied into the watering device 2. The defatted soybeans were sprinkled for 2 minutes before being transferred to the grain raw material outlet 12 while being stirred by the watering screw 5c. At this time, the amount of defatted soybeans supplied into the sprinkler 2 is always constant, and the watering screw 5c is always rotating at a constant speed, so that the defatted soybeans transferred in the sprinkler 2 are retained. The time was constant.

  The water sprinkling pipe 6a on the upstream side and the water sprinkling pipe 6b on the downstream side in FIG. 3 have the same configuration as that in FIG. Specifically, each of the water spray pipes 6a and 6b is a pipe having a length of 1800 mm and a thickness of 32A (outer diameter φ42.7 mm). The watering nozzles 10 provided on the watering pipes 6a and 6b are both conical nozzles having the same structure. In addition, 10 water spray nozzles 10 are arranged at equal intervals in each of the water spray pipes 6a and 6b, and the interval between the central axes of the water spray nozzles 10 is 180 mm.

  In this example, the watering ratio of the upstream watering pipe 6a and the downstream watering pipe 6b was set to 30:70. It was 89.2L / min (5.2ton / Hr) when the total amount of the 80 degreeC warm water supply amount to the sprinkling pipes 6a and 6b was measured with the flowmeter 7a. It was 62.4 L / min when the hot water supply amount to the watering pipe 6b was measured with the flow meter 7b. Therefore, the amount of water sprayed from the water spray pipe 6a is 26.8 L / min.

  Since ten water spray nozzles 10 are arranged in the upstream water spray pipe 6a, the amount of water sprayed from one of the water spray nozzles 10 provided in the water spray pipe 6a is 2.68 L / min. Similarly, since 10 water spray nozzles 10 are arranged in the downstream water spray pipe 6b, the amount of water sprayed from one of the water spray nozzles 10 provided in the water spray pipe 6b is 6.24 L / min. . That is, the sprinkling ratio for one sprinkling nozzle 10 on the upstream side and the downstream side was approximately 30:70.

  When the present example was operated and the sprinkled defatted soybean was visually inspected, water spray unevenness and nodules of the defatted soybean were not observed. Moreover, the defatted soybeans finally subjected to pressure steaming treatment showed no difference in the degree of progress of denaturation, and N-type and S-type (accumulated acetic acid) due to non-denaturation were not observed. Furthermore, as a result of measuring the nitrogen dissolution utilization rate of moromi, no decrease in the nitrogen dissolution utilization rate caused by over-denaturation of defatted soybean was observed.

DESCRIPTION OF SYMBOLS 1 Grain raw material processing equipment 2, 2a, 2b Sprinkling device 3 Preheating device 4 Pressure steaming device 5a, 5b, 5c Sprinkling screw (transfer means)
6a, 6b Sprinkling pipe 7a, 7b Flow meter 8 Pump 9 Flow control valve 10 Sprinkling nozzle 18 Sprinkling port 20 Grain raw material

Claims (6)

Prior to the pressure steaming treatment, a method of watering the grain raw material to be sprinkled with respect to the grain raw material to be transferred while continuously stirring,
The grain raw material is an aggregate of powder that absorbs water quickly and particles that absorb water slowly,
Due to the change in the amount of water sprayed from the sprinkling pipe or the change in the transfer speed of the grain raw material by the transfer means , the grain raw material is received at the downstream side rather than the upstream side with respect to the flow direction of the grain raw material. A method of watering a grain raw material, comprising increasing the amount of water sprayed to suppress excessive moisture in the powder part of the grain raw material on the upstream side to prevent agglomeration of the grain raw material. A plurality of nozzle pipes in the flow direction of the grist, by changing the water spray amount from the water spray pipe, according to claim 1 for changing the water spray amount of grist is received by the downstream and the upstream Watering method for grain raw materials. A watering apparatus that performs watering treatment is a multistage system in which a plurality of devices that can be watered independently is connected, and the amount of watering that the grain raw material receives is gradually changed from the upstream side toward the downstream side. The watering method of the grain raw material of 1 or 2 . Prior to the pressure steaming treatment, for the grain raw material to be transferred while continuously stirring, it is a watering device for the grain raw material to be sprinkled,
A watering pipe for watering the grain raw material, and a transfer means for transferring the grain raw material while stirring,
The grain raw material is an aggregate of powder that absorbs water quickly and particles that absorb water slowly,
Grain on the downstream side of the upstream side with respect to the flow direction of the grain raw material due to a change in the amount of water sprayed from the sprinkling pipe in the flow direction of the grain raw material or a change in the transfer speed of the grain raw material by the transfer means in the flow direction of the grain raw material. Sprinkling of cereal raw material, characterized in that the amount of sprinkling received by the raw material is increased to prevent excessive powder moisture in the cereal raw material on the upstream side to prevent the formation of lumps of the cereal raw material. apparatus. A plurality of sprinkling pipes are provided along the flow direction of the grain raw material, and the amount of sprinkling received by the grain raw material can be changed on the upstream side and the downstream side by changing the watering amount of each watering pipe. 4. The grain raw material sprinkler according to 4 . A plurality of devices combined with a sprinkling pipe and transfer means are connected to form a multi-stage system, and the amount of sprinkling received by the grain raw material is changed for each of the devices, and the grain raw material is moved from the upstream side toward the downstream side. The sprinkling device for grain raw materials according to claim 4 or 5 , wherein the amount of sprinkling received can be changed stepwise.

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