JPH11285646A - Method for easy immersion in waste water and apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable adequate draining dealing with various kinds of grains by disposing a holding space for storing water separately from the grains and discharging immersion water of the grains, then discharging the water of the holding space, generating a negative pressure in the space between the rear surface of the grains and the front surface of the water and removing the water accumulating in the lower part of the grain layer. SOLUTION: After the grains are immersed for a prescribed time, a drain valve 11 is fully opened to rapidly discharge the water. The free water sticking to the surface of the grains moves downward and is accumulated as a water film on the rear surface of the grain deposition layer with a slide shutter 4 as a base by surface tension. Part of the water flows out into the holding space 9. Next, the water is supplied and discharged into the holding space 9 by a water feeder 7, by which the negative pressure is generated in the holding space 9 and the water film formed on the rear surface of the grains is sucked and removed into the holding space 9. Unlike the mechanical suction, the change in the atm. pressure accompanying the fall of the water surface in the holding space 9 is utilized and, therefore, the uniform negative pressure acts over the entire surface of the rear surface of the water film layer and the water film layer is gently sucked from the lower layer, by which the approximately complete removal thereof is made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for dipping cereals, which are mainly used in the enzyme industry and the brewing industry.

[0002]

2. Description of the Related Art After immersing cereals, immersion water is discharged, and residual water is removed from a slide damper in contact with the lower surface of the cereal sedimentary layer. In some cases, residual water was sucked from the lower part of the immersion tank by a suction device.

[0003]

In the step of immersing cereals,
After absorbing water for a predetermined time, it is necessary to drain the water promptly and completely drain the water in a short time. However, when removing residual water from the slide damper, it took a long time to remove water adhering to the grains. Further, when the residual water was sucked by the suction device, a part of the residual water was removed, so that uniform drainage could not be performed. The object of the present invention is to
It is an object of the present invention to provide an immersion method and apparatus that facilitates uniform and complete drainage in a short time and that does not include a structure that resists the discharge of grains inside the immersion apparatus.

[0004]

According to the first aspect of the present invention, a holding space for storing water separated from cereals is provided below the immersion tank. After discharging the immersion water of the grains, the water stored in the holding space is discharged. Due to the discharge of water, the space formed between the lower surface of the cereals and the upper surface of water becomes negative pressure. The water accumulated in the lower part of the cereal layer is removed by being sucked into the holding space by the negative pressure. By removing the water in the holding space, a uniform negative pressure is applied to the lower surface of the cereal grains, and the water accumulated in the lower part of the cereal layer is reliably removed.

According to a second aspect of the present invention, a holding space is provided below the immersion tank separately from the grains. After discharging the immersion water of the cereals, the storage space is set to a negative pressure, thereby removing water accumulated in the lower part of the cereal layer. By providing the holding space separately from the cereals, a uniform suction force is applied to the lower surface of the cereal layer to remove water accumulated in the lower part of the cereal layer.

According to a third aspect of the present invention, when the holding space is set to a negative pressure, the flow direction of the suction air is set to the same downward direction as the water falling direction. By making the flow direction of the suction air downward, more uniform suction force can be applied to water accumulated in the lower part of the cereal layer located in the horizontal direction.

According to a fourth aspect of the present invention, the degree of negative pressure is adjusted by adjusting the discharge speed of water or air in the holding space. By removing the water or air in the holding space while adjusting it, a weak and uniform negative pressure is applied to the lower surface of the cereal, and water accumulated in the lower part of the cereal layer is more reliably removed.

According to the fifth aspect of the present invention, the operation of reducing the holding space to a negative pressure is repeated a plurality of times, so that the water accumulated in the lower part of the cereal layer is reliably removed. Even in the case where free water above the cereal sedimentary layer naturally falls over time, the pressure accumulated in the lower part of the cereal layer is more reliably removed by applying a negative pressure to the holding space a plurality of times.

According to a sixth aspect of the present invention, the holding space is changed from negative pressure to positive pressure or from positive pressure to negative pressure. When a negative pressure is applied to the holding space, a path for water flowing to the holding space is formed. By making the holding space a positive pressure, a path different from the path of the water in the negative pressure state is formed, and complete water removal is performed.

According to the present invention, a slide damper is provided at the lower end of the immersion tank. A slide shutter that has water permeability and can be pulled out of the immersion tank is provided above the slide damper. A drain hole is provided between the slide damper and the slide shutter. By providing a slide shutter that can be pulled out of the immersion tank, a space can be provided between the immersion tank and the slide damper when discharging grains, without installing a structure inside the immersion tank.

According to an eighth aspect of the present invention, a slide shutter which has water permeability and can be pulled out of the immersion tank is provided substantially horizontally. By providing the slide shutter almost horizontally, a water film of free water generated at a lower portion of the cereal sedimentary layer with a uniform thickness can be generated on the upper surface of the slide shutter after draining the immersion water.

According to the ninth aspect of the present invention, the slide shutter which has water permeability and can be pulled out from the immersion tank is provided at an angle. By providing the slide shutter at an angle, the area through which the immersion water passes increases, and the drainage time of the immersion water is reduced.

According to the tenth aspect of the present invention, a water supply hole for supplying water is provided between the slide damper and the slide shutter. Further, a device capable of adjusting the amount of water supply is provided. By supplying a predetermined amount of water between the slide damper and the slide shutter, single and multiple free water removals can be performed.

In the eleventh aspect of the present invention, a suction hole is provided on the upper surface of the slide damper so that grains are not mixed. A device for sucking water or air from the suction hole is provided. In addition to generating a negative pressure by removing water, a uniform negative pressure can be applied to the entire lower surface of the slide shutter by suction of air.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view of an immersion apparatus provided with a horizontal slide shutter. FIG. 2 is a longitudinal sectional view of an immersion device provided with a slide shutter inclined.

The immersion apparatus 1 comprises an immersion tank 5 which is a container for storing cereals and immersion water, a slide damper 3 for opening and closing the cereal discharge port 2, and a slide shutter 4 for holding the cereals. The slide damper 3 moves in the horizontal direction and opens and closes the grain outlet 2. The upper surface of the slide damper 3 may be provided with a suction hole 13 for preventing grains from entering, and a suction device 14 for discharging water and air may be provided. Also,
When opening the grain discharge port 2, a mechanism that moves the slide damper 3 downward and then moves in the horizontal direction may be used.

The slide shutter 4 includes a slide damper 3.
Is provided with a space above it, and is made of a material such as a water-permeable punching plate. The immersion tank 5 is provided with a concave guide rail 6 so as not to resist the discharge of grains,
The slide shutter 4 may be configured to be able to be completely pulled out from the immersion tank 5. Further, the slide shutter 4 may be provided to be inclined as shown in FIG.

A water supply device 7 and a drainage device 8 are provided between the slide damper 3 and the slide shutter 4. Water supply device 7
Is a device for supplying water to the holding space 9 between the slide damper 3 and the slide shutter 4, and can automatically supply a fixed amount of water by using a pressure sensor 10 or the like for detecting water pressure. . Further, an observation window may be provided in the holding space, and water may be supplied manually.

A large-diameter pipe is used for the drainage device 8, and when draining immersion water, the drainage valve 11 is fully opened.
Be able to drain in a short time. In the case where water is supplied to the holding space 9 to remove free water of cereals, water is drained while adjusting the opening of the drain valve 11.

With the slide damper 3 and the slide shutter 4 closed, cereals are put into the immersion tank 5 and immersion water is supplied in a short time. The supply of immersion water is stopped by the pressure sensor 1
It may be indicated by 0. Grains are deposited with the slide shutter 4 as a bottom surface, and immersion water is supplied above the top surface of the grain accumulation layer with the slide damper 3 as a bottom surface. After immersion for a predetermined time, the drainage valve 11 is fully opened to drain the water in a short time. Even after the upper surface of the immersion water falls below the slide shutter 4 and the amount of drainage decreases, the free water attached to the surface of the cereal gradually moves downward while passing through the gap between the cereal particles. The free water that has moved downward accumulates as a water film below the cereal sedimentary layer with the slide shutter 4 as the bottom surface due to surface tension. When the thickness of the accumulated water film layer increases, some water flows out to the holding space 9 through the slide shutter 4.

When the slide shutter 4 is provided substantially horizontally, the thickness of the water film layer is formed uniformly. When the slide shutter 4 is provided at an inclination, the thickness of the water film layer is formed thicker on the lower position side and thinner on the higher position side of the slide shutter 4.

Water is supplied to the holding space 9 by the water supply device 7 and discharged from the holding space 9. By discharging the water from the holding space 9, the inside of the holding space 9 becomes a negative pressure, and the water film formed on the lower surface of the cereal is sucked and removed into the holding space 9. Unlike the mechanical suction of a suction device or the like, since the pressure change accompanying the descent of the water surface in the holding space 9 is used, a uniform negative pressure acts on the entire lower surface of the water film layer, and the water film layer is moved to the lower layer. Gently, and can be almost completely removed. When the immersion water is discharged, a part thereof may be left in the holding space 9 and used for generating a negative pressure.

When mechanical suction is performed by a suction device or the like, a negative pressure state is formed by suction and removal of air.
A uniform negative pressure cannot be formed on the entire lower surface of the water film layer. Therefore, in order to generate a uniform air flow to the water film layer, a suction hole 13 is provided on the upper surface of the slide damper 3 as shown in FIG. Provide. When the distance between the slide damper 3 and the slide shutter 4 is large and the holding space 9 is sufficiently large, the same effect can be obtained even if the suction hole 13 is provided on the side of the immersion tank 5 near the slide damper 3.

When supplying water to the holding space 9, the ventilation device 12 provided in the holding space 9 is opened to keep the pressure in the holding space 9 at normal pressure so as not to affect the water film. It is desirable. However, when the holding space 9 is set to a positive pressure, water is supplied with the ventilation device 12 closed. When draining from the holding space 9, the ventilation device 12 is closed because the pressure in the holding space 9 needs to be negative.

The water film formed below the cereal layer has a state in which only a part of the water is removed and a hole is formed in the water film due to rapid and uneven suction. In this state, air having much lower passage resistance than water is preferentially sucked into the holding space 9, so that free water at the lower part of the grain layer cannot be completely sucked. Therefore, the drainage amount of the drainage device 8 or the suction device 1
The degree of the negative pressure in the holding space 9 is adjusted by adjusting the amount of suction of 4. As compared with the case where the drain valve 11 of the drain device 8 is fully opened, the pressure can be gradually reduced from the normal pressure to the negative pressure, and the water film formed at the lower part of the grain layer can be more reliably removed. Become.

Depending on the type of cereal, it may take time for free water to reach from the upper part to the lower part of the cereal sedimentary layer. The free water that has reached the lower surface of the cereal layer initially forms a water film on the upper surface of the slide shutter 4, and the cereal on the lower surface of the cereal layer is again immersed. If this state is left until free water completely reaches from the upper part of the cereal sedimentary layer, the immersion state becomes extremely uneven. For this reason, after the water space is formed, the holding space 9 is set to a negative pressure and the water film is removed. Then, when the water film is formed again, the holding space 9 is set to the negative pressure and the water film is removed.
As described above, by repeatedly applying the negative pressure to the holding space 9 a plurality of times, the immersion state of the grains is prevented from becoming uneven. An observation window may be formed on the side surface of the immersion tank 5 near the slide shutter 4, and the holding space 9 may be set to a negative pressure by manual operation while visually observing the state of formation of the water film. The negative pressure operation may be automatically controlled at arbitrary intervals.

After the water film under the cereal sedimentary layer is removed by suction,
The slide shutter 4 is opened and the grains are dropped to the slide damper 3. Since the slide shutter 4 is completely pulled out from the inner wall surface of the immersion tank 5, there is no structure inside the immersion tank 5 that has a large resistance to falling of grains. For this reason, the grains swelled by immersion can also fall smoothly.

When the holding space is changed from negative pressure to positive pressure or from positive pressure to negative pressure, water is supplied while the ventilation device 12 is closed, or a suction device 14 capable of supplying air is used. . When the water accumulated in the lower part of the cereal layer is removed by applying a negative pressure to the holding space, a path for the water flowing to the holding space is formed inside the cereal layer unevenly deposited. For this reason, even if the operation of reducing the pressure of the holding space is repeated a plurality of times, water is removed from the water path at the same position, and there is a possibility that cereals partially retaining the water may be generated. By setting the holding space 9 to a positive pressure, air enters into the water deposited on the lower surface of the cereal layer, and a path different from the path of the water in the negative pressure state is formed. By applying a negative pressure again using this different path, the water can be completely removed. Further, by setting the holding space 9 to a positive pressure, the water film formed by the surface tension of the water acting between the slide shutter 4 and the cereal particles loses its balance due to the intrusion of air, and water is removed. I can do it.

[0029]

According to the present invention, it is possible to generate a uniform negative pressure on the lower surface of the cereal sedimentary layer, thereby removing a water film staying under the cereal layer. Furthermore, by performing an operation of adjusting the degree of the negative pressure or an operation of repeating generation of the negative pressure a plurality of times, it is possible to perform appropriate draining corresponding to various cereals. Also, by adding an operation to make the holding space positive pressure,
More reliable drainage can be performed. Furthermore, by forming the holding space without providing a structure that resists the discharge of cereals inside the immersion device, it is possible to perform reliable drainage, and sanitary properties are also improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an immersion device provided with a slide shutter substantially horizontally.

FIG. 2 is a longitudinal sectional view of an immersion device provided with a slide shutter inclined.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 immersion device 2 discharge port 3 slide damper 4 slide shutter 5 immersion tank 6 guide rail 7 water supply device 8 drainage device 9 holding space 10 pressure sensor 11 drainage valve 12 ventilation device 13 suction hole 14 suction device

Claims (11)

[Claims] 1. An immersion tank is provided with a holding space for storing water separately from cereals, and after discharging immersion water of cereals, the water stored in the holding space is discharged, and a space between the lower surface of the cereals and the upper surface of water is provided. An easy immersion method of drainage that removes water accumulated in the lower part of the cereal layer by making the space formed in the pit a negative pressure. 2. A holding space is provided below the immersion tank so as to be separated from the grains, and after discharging the immersion water of the grains, the holding space is set to a negative pressure to remove water accumulated in the lower part of the cereal layer. Easy immersion method for drainage. 3. The easy immersion method for drainage according to claim 2, wherein the flow direction of the suction air is downward when the holding space is set to a negative pressure. 4. The method according to claim 1, wherein the pressure in the holding space can be adjusted in the negative pressure direction. 5. The easy immersion of drainage according to claim 1, wherein the operation of removing water accumulated in the lower part of the cereal layer is repeated a plurality of times by applying a negative pressure to the holding space. Method. 6. The method according to claim 1, wherein the holding space is changed from negative pressure to positive pressure or from positive pressure to negative pressure. 7. An immersion device for easily draining water, wherein a slide damper is provided at a lower end of the immersion tank, a slide shutter having water permeability and capable of being pulled out of the immersion tank is provided above the slide damper, and a drain hole is provided between the slide damper and the slide shutter. . 8. The immersion apparatus according to claim 7, wherein a slide shutter having water permeability and capable of being drawn out of the immersion tank is provided substantially horizontally. 9. The immersion apparatus according to claim 7, wherein a slide shutter having water permeability and capable of being drawn out of the immersion tank is provided at an angle. 10. The immersion apparatus according to claim 7, wherein a water supply hole for supplying water is provided between the slide damper and the slide shutter, and a device capable of adjusting a water supply amount is provided. 11. The immersion apparatus for easily draining water according to claim 7, wherein a suction hole is provided on an upper surface of the slide damper, and a device for sucking water or air is provided.