JP2006000845A - Continuous washing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a continuous washing method with good washing efficiency which, when an object to be washed such as rice is washed in a large amount in a continuous manner, can suppress breaking of the object and, at the same time, can satisfactorily remove a dirty component, such as a turbid water component in which rice, or the like, has been washed, and foreign materials. <P>SOLUTION: In this continuous washing method, (a) high-pressure water and/or compressed gas are discharged from the bottom of a tank into a first washing tank 2, and, while conducting floating stirring, the object to be washed is sucked in through a first ejector 151 from the first washing tank 2, (b) the object is discharged into a second washing tank 3, and the high-pressure water and/or compressed gas are discharged from the bottom of the tank, followed by sucking-in of the object from the second washing tank 3 through a second ejector 152 while conducting floating stirring, (c) the object is discharged into a separating device 4 to separate the object from water, (d) the object is led to a third washing tank 5, and, while conducting washing with small air bubbles, the object is sucked in from the third washing tank 5 through a third ejector 153, and (e) the object is discharged into a dipping tank 10 for dipping in the presence of small air bubbles. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a continuous cleaning method for continuously cleaning cereals, beans, marine products, seeds, spice ingredients, fish eggs, and the like, and more specifically, for example, in large quantities of rice in a rice processing company, a school lunch, a lunch box factory, etc. It is related with the continuous washing | cleaning method suitable for the rice washing and immersion when cooking rice at a time.

  In order to cook rice deliciously, it is first necessary to sufficiently remove the sharpening juice components that cause the odor and taste of the rice during the washing process, and it is necessary to immerse water uniformly in the soaking process.

  When washing rice in a general household, since the amount of rice to be used is small, it can be washed carefully by hand, and the sharpening juice component can be sufficiently removed. On the other hand, a rice processing company, a school lunch, a bento factory, etc. cook a large amount of rice at a time, so it is a matter of course that the rice is washed continuously using a rice washer / rice feeder.

  As a conventional example of a rice washing machine, for example, a screw propeller for washing is provided in a water channel through which rice and washing water flow together, and the rice and water are transferred to the rice feeder by the screw propeller, and the propeller rotates. There are some which wash the rice by the action of the rotating flow that occurs and the collision with the propeller (see Patent Documents 1 and 2). The washing water is supplied without stopping in the flow direction, and is discharged to the outside, so that the sharpening juice components and foreign matter on the surface of the rice grains generated during washing are also discharged at the same time, and the rice is always washed with fresh water. . The washed rice is continuously sent to the rice feeder and transferred to the immersion tank by a pump.

  However, the conventional rice washer / rice feeder as described above has a problem that a large amount of rice grains are crushed by a collision at a rotating propeller blade or a bent corner of a pipe, and the cleaning effect is poor. In particular, the crushed rice becomes pasty when cooked, so the rice cannot be cooked well, and the inside of the kettle can be burnt, or a large amount of wasted rice is stuck.

  In addition, in order to remove the sharpening juice components and foreign matters generated by washing with a water flow and keep the washing water in a new state, the water supplied to the rice washing machine is passed as it is past the screw propeller installation area. A large amount of water is required because the rice is discharged from the outlet to the outside, and the rice and water are also sent to the dip tank.

  In addition, in the dipping process, there is a problem that when a large amount of rice is used regardless of the washing machine, water does not easily penetrate into each rice grain and unevenness is produced in the cooking process.

  Patent Document 3 describes a rice washing / immersion method using fine air bubbles. This method has an advantage that the crushed rice can be reduced because the sharpened juice components and the like are floated and separated by fine bubbles to be washed. However, this method is all a batch system, whereas the existing rice cooking line is a continuous system. For this reason, in order to combine batch-type rice washing and soaking with a continuous rice cooking line, it is necessary to prepare several washing and soaking tanks, and these control systems are also combined with conventional rice cooking equipment. Therefore, it is complicated and expensive in terms of price, and as a result, it is not highly evaluated in terms of marketability.

  In recent years, the restaurant industry and rice that can be stored at room temperature are prosperous, and there is a strong demand for improving the problems in cooking a large amount of rice at once.

JP-A-5-104004 Japanese Patent Laid-Open No. 10-296100 Japanese Patent No. 3081830

  The object of the present invention is to improve the cleaning efficiency that suppresses crushing of the object to be cleaned and sufficiently removes dirt components such as sharpening juice components and foreign substances when continuously cleaning the object to be cleaned such as rice. It is to provide a continuous cleaning method.

The continuous cleaning method of the present invention for solving the above problems has the following configuration.
(1) Continuously supply the objects to be cleaned into the cleaning tank, and discharge high-pressure water and / or compressed gas from the bottom of the cleaning tank to wash the objects to be cleaned while floating and stirring, and clean the objects from this cleaning tank. The object is sucked in with an eductor together with water and discharged to the separation device to separate the object to be cleaned from the water, and the object to be cleaned separated from the water by the separation device is guided into the immersion tank, and the object to be cleaned in this immersion tank A continuous cleaning method characterized by performing immersion.
(2) The continuous cleaning method according to (1), wherein the immersion in the immersion tank is performed in the presence of fine bubbles obtained by opening the gas-dissolved pressurized water to the atmosphere.
(3) While supplying the object to be cleaned into the cleaning tank and discharging the high-pressure water and / or compressed gas from the lower part of the cleaning tank to float and agitate the object to be cleaned, Inhaled with eductor together with water, discharged to the separation device to separate the object to be cleaned from water, the object to be cleaned separated from water is led to another cleaning tank, and the gas dissolved pressurized water is released to the atmosphere by fine bubbles obtained A continuous cleaning method characterized by performing cleaning.
(4) The washing tank comprises a first washing tank and a second washing tank,
(a) While discharging the high pressure water and / or compressed gas from the lower part of the tank into the first washing tank to float and agitate the object to be washed, the object to be washed together with water in the first eductor Inhale,
(b) The object to be cleaned and water are discharged into the second cleaning tank, and high pressure water and / or compressed gas is discharged from the lower part of the tank to float and stir the object to be cleaned from the second cleaning tank. Inhale with a second eductor with water,
(c) The continuous cleaning method according to any one of (1) to (3), wherein the object to be cleaned is separated from water by being discharged into a separation device.
(5) (a) While discharging the high-pressure water and / or compressed gas from the lower part of the tank into the first cleaning tank and floating and stirring the object to be cleaned, Suction with eductor,
(b) The object to be cleaned and water are discharged into the second cleaning tank, and high pressure water and / or compressed gas is discharged from the lower part of the tank to float and stir the water together with the object to be cleaned from the second cleaning tank. Suction in the second eductor,
(c) It is discharged into a separation device to separate the object to be cleaned from water,
(d) The object to be cleaned separated from the water is guided to the third cleaning tank, and the object to be cleaned together with the water from the third cleaning tank is washed with the third bubble while cleaning with fine bubbles obtained by releasing the gas-dissolved pressurized water to the atmosphere. Suction with eductor,
(e) Next, a continuous cleaning method is characterized in that the object to be cleaned is discharged into the immersion tank together with water and immersed in the presence of fine bubbles obtained by releasing the gas-dissolved pressurized water to the atmosphere.
(6) The continuous cleaning method according to (4) or (5), wherein the object to be cleaned is cleaned in the second cleaning tank by floating stirring and swirl with high-pressure water and / or compressed gas.
(7) In the first washing tank, washing is performed by floating agitation with high-pressure water and / or compressed gas, and in the second washing tank, washing is performed by combined use of floating agitation with high-pressure water and / or compressed gas and vortex, The continuous cleaning method according to (5) or (6), wherein cleaning is performed by using fine bubbles in combination with floating agitation with high-pressure water and / or compressed gas in the third cleaning tank.
(8) The continuous cleaning method according to any one of (2) to (7), wherein the gas-dissolved pressurized water is a circulating flow.
(9) The continuous cleaning method according to any one of (1) to (8), wherein the flow rate of the eductor is kept constant by a flow meter and a regulating valve, and excess high-pressure water is recovered in a recovery tank.

  According to the above method (1), cleaning can be quickly completed by floating and stirring the object to be cleaned with high-pressure water and / or compressed gas using the cleaning tank. In addition, since an eductor is used as a means for transporting the object to be cleaned, the object to be cleaned is less crushed and the generation rate of crushed rice and the like can be reduced.

  According to the above method (2), the object to be cleaned is washed with water even if dirt components such as rice bran are adhered to a part of the object to be cleaned after completion of the floating stirring cleaning with the high pressure water and / or compressed gas. And the dirt component can be almost completely removed by washing with fresh washing water containing fine bubbles. In addition, since the object to be cleaned is immersed with fine bubbles, for example, in the case of washing with rice, the problem that the sharpening juice component penetrates into the rice grains and the cooked rice becomes odorless is eliminated.

  In the above methods (1) to (5), all the washing waste liquid after washing is discharged by floating agitation with high pressure water and / or compressed gas in the previous stage, so the third washing tank (another washing tank) or immersion Since the washing water in the tank is kept in a state where there is little dirt such as soot and foreign matter, even if it is used by circulating it, the washing efficiency is hardly lowered. Accordingly, it is possible to generate the gas-dissolved pressurized water in a circulating flow, so that it is not necessary to use a large amount of water, and the amount of water used is suppressed.

  According to the above method (6) or (7), in the washing step of floating stirring with high-pressure water and / or compressed gas, floating stirring and transportation with high-pressure water and / or compressed gas are simultaneously performed, and the second washing tank Then, the cleaning effect can be further increased by forming the vortex.

  As described above, the continuous cleaning method of the present invention has less crushing of the object to be cleaned and the cleaning is continuous as compared with the conventional screw-propeller-type rice-washing / feeding machine and batch-type cleaning / immersion apparatus using fine bubbles. Therefore, only a small amount of cleaning is required, and therefore the cleaning tank itself may have a small capacity, and the apparatus itself can be downsized and the installation area can be reduced.

  An embodiment of the present invention will be described below. FIG. 1 is a schematic view of an apparatus for carrying out the rice washing and dipping method according to this embodiment.

  As shown in FIG. 1, this apparatus first comprises a first cleaning block A and a second cleaning / immersion block B. The first cleaning block A includes a rice storage tank 1, a first cleaning tank 2, a second cleaning tank 3, and a pressure pump 7 (vortex pump). The second cleaning / immersion block B includes a third cleaning tank 5, a separation device 4, and an existing immersion tank 10, and an air-dissolved pressurized water forming device 6 is disposed in the middle of the closed water channel S. Further, as a device common to the first cleaning block A and the second cleaning block B, there are a recovery tank 9 and a pressure pump 8 (vortex pump).

  In the first washing block A, the raw rice in the rice storage tank 1 is put into the first washing tank 2 disposed in the lower part of the rice storage tank 1 by opening the electric shutter 20 at the lower part of the rice storage tank 1. . Almost simultaneously with the opening of the shutter 20, high pressure water is sent out from the pressure pump 7 through the pipe line P1. The high-pressure water is divided into two, one for floating stirring and one for conveying rice. In the middle of these two pipes P3 and P4, there are adjusting valves 1V and 2V for adjusting the flow rate, and flow meters 16 and 17 for measuring the flow rate are provided as the flow proceeds further. The pipe line P3 is connected to the bottom of the first cleaning tank 2.

  A side discharge pipe P <b> 5 is provided on the wall portion of the first cleaning tank 2, and the discharge pipe P <b> 5 is connected to the first eductor 151. The first eductor 151 is also connected to a conveyance pipeline P4. A pressure gauge 18 for viewing the water pressure is provided in the pipe line P4, and this is disposed in front of the first eductor 151. The first eductor 151 sucks the rice suspended and stirred with high-pressure water in the first washing tank 2 from the line P5, and the sucked rice is conveyed to the second washing tank 3 through the line P6. Is done.

  The second cleaning tank 3 is configured in substantially the same manner as the first cleaning tank 2. That is, of the two pipes P3 and P4 divided from the pipe P1, the pipe P3 is connected to the second washing tank 3 via the regulating valve 1V and the flow meter 16, while the pipe P4 is connected to the regulating valve 2V. The second eductor 152 is connected via the flow meter 17 and the pressure gauge 18. The second eductor 152 sucks the rice suspended and stirred with high-pressure water in the second washing tank 3 from the pipe P5, and the sucked rice is conveyed to the separation device 4 through the pipe P6. The

  The high-pressure water sent out from the pressure pump 7 through the pipe line P1 carries floating agitation and rice, and the amount and pressure of water are adjusted by the regulating valves 1V and 2V. Excess high-pressure water generated by the adjustment is sent from the flow rate / flow pressure relief valve 3V to the pipeline S through the pipeline P7.

  The separation device 4 includes a receiver 42 having an upper opening, and an obliquely inclined punching plate 41 attached to the upper opening of the receiver 42. As a result, the water and rice fed into the separation device 4 are separated into water and rice by the punching plate 41, and the water is discharged from the pipe P8 connected to the bottom of the receiver 42 to a drainage groove (not shown). The The rice naturally falls from the punching plate 41 and flows into the third cleaning tank 5. Instead of the punching plate 41, a net material may be used.

  Before the rice flows, the third cleaning tank 5 is filled with water that has been discharged from the air-dissolved pressurized water forming device 6 and in which fine bubbles are generated by opening the air through the regulating valve 4V. The regulating valve 4V is preferably close to the tank 5. The rice that has flowed into the third washing tank 5 comes into contact with the fine bubbles and is suspended and agitated. Further, a third eductor 153 is connected to the wall surface of the tank 5 through the discharge pipe P5. As a result, the rice in the third washing tank 5 is sucked into the third eductor 153 from the pipe P5 together with the fine bubble water, and is conveyed to the immersion tank 10 through the pipe P6.

  The air-dissolved pressurized water forming device 6 includes a pressurizing pump and a pressure tank arranged in this order along the flow direction of the closed water passage S, and a compressor is connected to the pressure tank. Instead of the compressor, an inert gas / cylinder such as carbon dioxide gas or nitrogen gas may be connected to use the inert gas-dissolved pressurized water instead of the air-dissolved pressurized water.

  An example of the first to third eductors 151, 152, and 153 is shown in FIG. As shown in the figure, the eductor includes a main body 51 having a connection portion 52 to which a pipe line P5 is connected, a water chamber 53 and a diffuser 54 that are integrally connected to both sides of the main body 51. The water chamber 53 is connected to a pipe P4 for sending high-pressure water, and the diffuser 54 is connected to a pipe P6. Inside the main body 51, a nozzle 55 whose diameter gradually decreases from the water chamber 53 toward the diffuser 54 is provided. For this reason, the object to be cleaned is sucked into the main body 51 through the connecting portion 52 by the high pressure water ejected from the tip of the nozzle 55 and discharged from the diffuser 54 together with the high pressure water.

  The rice that has been dipped for a predetermined set time opens the motorized valve 11 provided at the bottom of the dipping tank 10 and moves to the measuring trough 12 together with water. The measuring basket 12 measures rice and drains it at the same time, and is composed of a punching plate or the like. At the lower part of the weighing tub 12, there are provided a water receiving tray 31 and a shutter 13 for putting rice into the pot 14. Although all the water received in the water receiving tray 31 is discharged to the external drainage groove in the conventional system, in this embodiment, the water is recovered by collecting it from the pipe S to the recovery tank 9. The shuttle 14 is conveyed below the shutter 13 by a belt conveyor or the like.

  The recovery tank 9 has a structure in which the recovery tank upper discharge port 23 can form a vortex as shown in FIG. 3, and the turbid water recovered through the closed water channel S by forming this vortex is recovered in the recovery tank. 9 can be discharged to the outside through the drainage pipe P12 from the drainage basin 22 in the center of the center. Further, since bubbles are generated at the upper limit water level of the recovery tank 9, the upper edge portion of the drainage basin 22 has a saw-toothed structure in order to destroy and remove the bubbles.

  The high-pressure water discharge port provided at the bottom of the first cleaning tank 2, the second cleaning tank 3, and the third cleaning tank 5 also functions as a discharge port for discharging turbidity in the tank. A valve 5V is provided in the pipe line P8. The waste in each of the tanks 2, 3 and 5 is sent out from the pipe P8 to the drain. One end of the rice discharge pipe P5 provided on the side surface of the tank protrudes into the tank, and the tip of the pipe P5 is inclined to make it easier to receive rice.

  The washing water that has been subjected to the floating stirring washing and the conveyance simultaneously with the high-pressure water in the first washing tank 2 and the second washing tank 3 is discharged by the separation device 4 in front of the third washing tank 5. Further, a drainage basin 32 containing a cleaning component is disposed above the first cleaning tank 2, the second cleaning tank 3 and the third cleaning tank 5, respectively. It is discharged to the drain through the path P9.

  On the other hand, the air-dissolved pressurized water discharged from the air-dissolved pressurized water forming device 6 is divided into two directions, one is opened to the atmosphere by the regulating valve 4V before the third washing tank 5 and the other is the regulating valve 4V before the immersion tank 10. Open to the atmosphere. Part of the fine bubble water in the immersion tank 10 reaches the recovery tank 9 from the upper limit water level branch 33 through the closed water channel S. Further, the washing water discharged from the recovery tank 9 reaches the fine bubble generating device 6 and closes the closed water channel.

  The operation procedure of this apparatus will be described. First, before the apparatus is operated, water is supplied into the closed water channel S to completely fill the water channel. Water is supplied from the water supply pipe P11 by opening the solenoid valve 6V connected to the immersion tank 10 and from the water supply pipe P10 by the ball tap 21 of the recovery tank 9.

  Next, when the elevator (not shown) is operated and the rice R is bucket transported and put into the rice storage tank 1, the pressure pump 7 is operated, and the high-pressure water sent from the pipe P1 passes through the pipes P3 and P4. One of them is discharged from the lower part of the first washing tank 2, and at the same time or after that, the shutter 20 of the rice storage tank 1 is opened and the rice R is put into the first washing tank 2. At this stage, floating agitation with high-pressure water starts, and rice R is sucked into the first eductor 151 from the discharge pipe P5 on the side of the tank and discharged into the second washing tank 3 from the pipe P6. As shown in FIG. 4, the discharge port in front of the second cleaning tank 3 is a means for enhancing the cleaning effect of the rice R, and the solution is achieved by making the discharge port 24 in a vortex direction as a vortex forming means.

  In the second cleaning tank 3, the eddy current formation and the floating agitation with high-pressure water are performed at the same time, so that the second eductor 152 can transport the rice faster from the tank side pipe P5 and increase the cleaning effect. The rice R thus washed is conveyed from the pipe P6 to the separation device 4 before the third washing tank 5.

  The rice R conveyed to the separation device 4 is separated from water, and the rice R falls into the third washing tank 5 and flows into it. The third cleaning tank 5 is already filled with water containing fine bubbles. Since the surface of the rice R separated from the washing water by the separation device 4 has a sharpening juice component or foreign matter attached thereto, it is removed by the force of floating separation of fine bubbles. The sharpening juice components, foreign matters and the like thus removed are discharged together with the washing water of fine bubble water from the branch passage through the drainage basin 32 to the drainage groove from the pipe P9 or through the closed waterway S. It collects in the collection tank 9 and is reused. Further, the pressure pump 8 is intermittently operated during the fine bubble cleaning, so that the high pressure water is sent to the third cleaning tank 5 through the pipe P2, and the rice is suspended and stirred from the tank side pipe P5. The rice is sucked and discharged by the eductor 153 of No. 3 and conveyed to the immersion tank 10 from the pipe line P6. That is, of the two pipes P3 and P4 divided from the pipe P2, the pipe P3 is connected to the second cleaning tank 3 via the regulating valve 1V and the flow meter 16, and the pipe P4 is connected to the regulating valve 2V and the flow rate. It is connected to the eductor 15 through the meter 17 and the pressure gauge 18.

  The discharge of rice R into the immersion tank 10 is continuous, and the rice R is accumulated from the lower part of the immersion tank 10 and is immersed for a predetermined set time. After the set time has elapsed, the motorized valve 11 is opened and the rice is discharged together with water to the lower measuring rod 12, and when the measuring rod 12 reaches the set amount, the motorized valve 11 is closed and the shutter 13 below the measuring rod 12 is opened. Rice R that has been washed and immersed in the pot 14 is introduced. The above series of operations is performed continuously, and the water is also circulated through the closed water channel S.

  In the recovery tank 9 disposed in the middle of the closed water channel S, the cleaning water discharged from the upper limit water level branch channel of the immersion tank 10, the lower tray 31, the first cleaning tank 2, and the second cleaning tank 3 of the measuring tub 12 are provided. Floating stirred high-pressure water and water remaining in the adjustment for carrying the eductor 15 and cleaning water recovered from the upper water level branch of the third cleaning tank 5 through the closed water channel S to the recovery tank 9 are accommodated. Since this water contains a small amount of sharpening juice components and foreign substances, the upper limit water level at the center of the recovery tank 9 is used to remove and discharge bubbles containing the sharpening juice components and foreign substances that are generated when discharged to the recovery tank 9. A drainage basin 22 is disposed at the position.

  As described above, the rice pre-cleaned in the first cleaning block A is separated from water by the separation device 4, so that it hardly contains any sharpening juice components unlike the conventional cleaning / immersion in the same tank. Therefore, the turbidity in the immersion tank 10 is low, and there is no unpleasant odor after cooking that occurs when the sharpening juice components and the like are transferred to the inside of the rice. Furthermore, since the washing water discharged from the second washing / immersion block B is collected in the collection tank 6 through the closed water channel S, the amount of water used can be reduced.

In addition, the 3rd washing tank 5 can be abbreviate | omitted as needed. In this case, the separation device 4 may be installed on the upper part of the immersion tank 10. At that time, if necessary, may be removed with a force of flotation of fine bubbles rice surface was sharpening juice component or adhesion of foreign matter R such as a dip tank 10.

  In addition, the amount of rice input to the continuous rice cooker is determined by the size of the kettle and the speed of the conveyor, but the number of washing tanks may be increased when the kettle capacity increases or the kettle transport speed increases. Can respond.

  In the above embodiment, high-pressure water is discharged from the lower part of the cleaning tank to float and stir the object to be cleaned, but compressed gas such as compressed air, compressed nitrogen gas, and compressed carbon dioxide gas may be used instead of high-pressure water. Moreover, high pressure water and compressed gas may be used in combination.

  In the case of using compressed gas, a pipe P30 having one end connected to a compressed gas supply device (not shown) such as a compressor and the other end connected to the diffuser pipe 40, and provided on the lower side surfaces of the cleaning tanks 2, 3, 5 are provided. A water supply pipe P70 is used. The pipe P30 is provided with an electromagnetic valve 80V that is turned ON / OFF before and after the set time for performing floating agitation and controls the injection of compressed gas, and an adjustment valve 60V for adjusting the compressed gas flow rate. . The electromagnetic valve 80V opens during the set time of the compressed gas injection, and shuts off the compressed gas outside the set time. In the case of using compressed gas, the compressed gas coming out of the compressed gas device is sent to the diffuser tube 40 through the pipe P30, and the compressed gas is discharged therefrom to float and stir the object to be cleaned. In this case, the conduit P3 is preferably closed in advance by the adjusting valve 1V, and the conveyance suction side electromagnetic valve 90V is closed. When the compressed gas is shut off, the conveyance suction side solenoid valve 90V is kept open. Along with the compressed gas, water corresponding to the water discharged from the cleaning tanks 2, 3 and 5 is continuously supplied to the cleaning tanks 2, 3 and 5 through the water supply pipe P70. The compressed gas supply device connected to the pipeline P30 connected to the cleaning tank 5 is compressed gas connected to the pipeline P30 connected to the cleaning tanks 2 and 3 so that it can be intermittently operated during the fine bubble cleaning. It is preferable to use an apparatus independent of the supply apparatus. Others are the same as the above-mentioned embodiment.

  When high-pressure water and compressed gas are used in combination, each flow rate balance of high-pressure water from the pipe P3, compressed gas from the pipe P30, water supplied from the water supply pipe P70, and water discharged from the side discharge pipe P5 is controlled. Then, the object to be cleaned is suspended and stirred by discharging high-pressure water from the lower portions of the cleaning tanks 2, 3, and 5 and discharging compressed gas from the diffuser tube 40. Others are the same as the above-mentioned embodiment. In addition, what is necessary is just to perform the water supply from the water supply pipe P70 as needed. In addition, the compressed gas supply device connected to the pipe line P30 connected to the cleaning tank 5 uses an apparatus independent from the compressed gas supply device connected to the pipe line P30 connected to the cleaning tanks 2 and 3 as described above. In this case, the operation timing should be synchronized with the operation of the high-pressure water.

  In addition, for the injection of high-pressure water into the cleaning tank 5, it is preferable to float and stir the object to be cleaned using water with less dirt and turbidity. Therefore, as shown in FIG. 5, another water supply / recovery tank 99 may be used instead of the water supply / recovery tank 9. In this case, a part of the fine bubble water in the immersion tank 10 reaches the water supply / recovery tank 99 from the upper limit water level branch passage 33 through the closed water passage S. Further, the cleaning water discharged from the water supply / recovery tank 99 reaches the fine bubble generator 6 and closes the closed water channel. Others are the same as the above-mentioned embodiment.

  In the above-described embodiment, the rice washing / immersion method has been described, but it can be similarly applied to a continuous washing method for continuously washing grains other than rice, beans, marine products, seeds, spice ingredients, fish eggs, and the like. is there. At that time, if necessary, the washing product may be sent directly from the third washing tank 5 to the next step without using the immersion tank 10.

It is a schematic diagram of the apparatus for enforcing the continuous rice washing and immersion method concerning one Embodiment of this invention. It is a partially broken front view which shows an example of the eductor in this invention. It is a schematic plan view which shows the structure of a collection tank. It is a schematic plan view of a 2nd washing tank. It is a schematic diagram at the time of replacing the water supply and collection | recovery tank to a 3rd washing tank and an immersion tank in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Storage tank 2 1st washing tank 3 2nd washing tank 4 Separation apparatus 5 3rd washing tank 6 Air melt | dissolution pressurized water formation apparatus 7 Pressure pump 8 Pressure pump 9 Collection tank 10 Immersion tank 151 1st eductor 152 2nd eductor 153 3rd eductor R rice (object to be cleaned)

Claims (9)

While supplying the object to be cleaned into the cleaning tank and discharging high-pressure water and / or compressed gas from the bottom of the cleaning tank to float and stir the object to be cleaned, the object to be cleaned is sucked in with the eductor from this cleaning tank. , To be discharged into a separation device to separate the object to be cleaned from water,
A continuous cleaning method characterized in that an object to be cleaned separated from water by a separator is introduced into an immersion tank, and the object to be cleaned is immersed in the immersion tank.   The continuous cleaning method according to claim 1, wherein the immersion in the immersion tank is performed in the presence of fine bubbles obtained by releasing the gas-dissolved pressurized water to the atmosphere. While supplying the object to be cleaned into the cleaning tank and discharging high-pressure water and / or compressed gas from the bottom of the cleaning tank to float and stir the object to be cleaned, the object to be cleaned is sucked in with the eductor from this cleaning tank. , To be discharged into a separation device to separate the object to be cleaned from water,
A continuous cleaning method, wherein the object to be cleaned separated from water is guided to another cleaning tank, and cleaning is performed with fine bubbles obtained by releasing gas-dissolved pressurized water to the atmosphere. The washing tank comprises a first washing tank and a second washing tank;
While discharging the high pressure water and / or compressed gas from the lower part of the tank into the first cleaning tank and floating and stirring the object to be cleaned, the object to be cleaned is sucked from the first cleaning tank together with water by the first eductor,
The object to be cleaned and water are discharged into the second cleaning tank, and high-pressure water and / or compressed gas is discharged from the lower part of the tank to stir and stir the object to be cleaned. Along with the second eductor,
The continuous washing | cleaning method in any one of Claims 1-3 which are made to discharge to a separation apparatus and isolate | separate to-be-cleaned object from water. While discharging the high pressure water and / or compressed gas from the lower part of the tank into the first cleaning tank and floating and stirring the object to be cleaned, the object to be cleaned is sucked from the first cleaning tank together with water by the first eductor,
The object to be cleaned and water are discharged into the second cleaning tank, and high pressure water and / or compressed gas is discharged from the lower part of the tank to stir and stir, and the object to be cleaned together with water is discharged from the second cleaning tank. Suction with eductor,
Discharge to the separation device to separate the object to be cleaned from water,
The object to be cleaned separated from water is guided to the third cleaning tank, and the object to be cleaned is washed with water from the third cleaning tank with the third eductor while cleaning with fine bubbles obtained by releasing the gas-dissolved pressurized water to the atmosphere. Inhale,
Next, the continuous cleaning method is characterized in that the object to be cleaned is discharged into the immersion tank together with water and the immersion is performed in the presence of fine bubbles obtained by releasing the gas-dissolved pressurized water to the atmosphere.   The continuous cleaning method according to claim 4 or 5, wherein in the second cleaning tank, an object to be cleaned is cleaned by floating stirring and vortex using high-pressure water and / or compressed gas.   In the first washing tank, washing is performed by floating agitation with high-pressure water and / or compressed gas, and in the second washing tank, washing is performed by combined use of floating agitation with high-pressure water and / or compressed gas and vortex, and third washing The continuous cleaning method according to claim 5 or 6, wherein cleaning is performed by using a combination of fine bubbles and floating stirring with high-pressure water and / or compressed gas in the tank.   The continuous cleaning method according to claim 2, wherein the gas-dissolved pressurized water is a circulating flow. The continuous cleaning method according to claim 1, wherein the flow rate of the eductor is kept constant by a flow meter and a regulating valve, and excess high-pressure water is recovered in a recovery tank.

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