JP2012085910A - Extraction apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an extraction apparatus especially suitable for a large-size extraction tank, efficiently performing washing inside the extraction tank and a discharge of a raw material residue after extracting an extraction liquid in a state of tightly closing the extraction tank.SOLUTION: This extraction apparatus 2 includes: an extraction tank body 4; an upper lid 6 having a raw material inlet 6a and an extracting liquid inlet 6b; a lower lid 8 having extraction liquid reception spaces and extraction liquid outlets 8a; an extraction floor 10 having a fixed floor 10a formed with a discharge port 10b of the raw material residue, and filter floors 10c each installed swingably between "a horizontal position" of the same level as the fixed floor and "an inclined position" which is inclined; a discharge machine 12 having blades 12b installed to a rotary shaft 12a, and discharging the raw material residue on the extraction floor 10 to the discharge port 10b.

Description

  The present invention relates to an extraction apparatus that takes out an extract by spraying an extraction liquid on a raw material.

  For example, an extraction device is put into practical use in which ground coffee beans are put in the extraction tank as raw materials, warm water is sprinkled as an extraction liquid, and a large amount of coffee beverage liquid is industrially extracted as the extraction liquid (see, for example, Patent Document 1). ).

Japanese Utility Model Publication No. 7-27425 (FIG. 1)

  The conventional extraction device as described above has the following problems to be solved.

  That is, the raw material residue after the extract is taken out is directly discharged to the floor surface by opening the lower open / close damper. Moreover, the inside of the extraction tank after discharge | emission, a damper, a filter, etc. are performed in the state which opened the damper. When the extraction tank is large and a large amount of residue is generated, the residue is scooped up using a shovel car or the like, put into a hopper, and sent to a dryer or a residue transporter by a conveyor or the like.

  Therefore, especially when a large amount of residue is generated, such as in a large extraction tank, the odor when discharging the residue, residue scattering, residue during cleaning, scattering of cleaning water, hygiene management, and production efficiency can be improved. There are problems such as difficult.

  The present invention has been made in view of the above-mentioned facts, and its main technical problem is to efficiently discharge the raw material residue after the extraction liquid is extracted and clean the inside of the extraction tank while the extraction tank is sealed. It is to provide an extraction apparatus that can be used particularly for a large extraction tank.

  According to the present invention, as an extraction device that solves the above technical problems, a vertically extending cylindrical extraction tank main body, a top lid that has a raw material inlet and an extraction liquid inlet and closes the upper end of the extraction tank main body, and an extraction liquid Forming a lower lid that has a receiving space and an extraction liquid outlet and closes the lower end of the extraction tank main body, and a raw material residue discharge port that is horizontally attached to the extraction tank main body side of the lower lid and is connected to the outside freely An extraction bed having a filter bed for extraction liquid extraction mounted so as to be swingable between a fixed horizontal floor and a "horizontal position" on the same plane as the fixed floor and an inclined "tilted position"; and a lower lid A rotary axis that can be driven to extend vertically from the bottom of the fixed bed to the center of the extraction tank main body, and the top of the extraction tank main body is attached to this rotary axis and discharges the raw material residue on the extraction bed to the discharge port. Radially extending along the inner periphery of the Equipped with a discharger having a number of blades and a plurality of cleaning nozzles installed in each of the extraction tank main body, upper lid, and lower lid, and spraying a cleaning liquid inside each, the filter bed is extracted into the input material It is positioned at the `` horizontal position '' when sprinkling the working solution to generate the extract and discharging the raw material residue, and at the `` inclined position '' at the time of cleaning by spraying the cleaning liquid with the cleaning nozzle. An extraction device is provided.

  Preferably, the fixed bed extends with a predetermined width in the diametrical direction of the extraction tank body, supports the rotary shaft, and includes a discharge port on at least one side in the diametrical direction across the rotary shaft, and the filter bed. The “horizontal position” and an arbitrary “inclined position” above each of a pair of meniscus portions defined between the fixed bed and the inner edge of the extraction tank body centering on a swing axis extending along the fixed bed. It is mounted so that it can swing between.

  In addition, the blades of the discharger are attached to the opposite surfaces of the blade body formed by a horizontal plate that extends straight on both sides of the rotating shaft and enters the width of the fixed floor, and the fixed floor of the blade body. A scraper mounted in a plurality of comb teeth is provided to guide the residue to the residue discharge port during rotation.

  Furthermore, it has a bar-shaped fixed bar that extends above the blade body of the discharger in parallel with the edge on one side of the fixed floor and has both ends attached to the inner edge of the extraction tank body.

  In addition, a leveling unit having a plurality of leveling plates that extend radially in the horizontal direction at the tip of a freely rotating shaft extending vertically from the upper lid toward the inside of the extraction tank body and smoothes the raw material in the extraction tank smoothly. Equipped with a machine.

  A screw feeder is provided that is connected to the residue discharge port via an on-off valve and quantitatively supplies the residue to a hermetic transporter connected to the dehydrator.

  The extraction apparatus constructed in accordance with the present invention swings between the upper and lower lids that close the top and bottom of the extraction tank main body, the fixed bed on which the raw material residue discharge port is formed, and the “horizontal position” and “inclined position”. An extraction bed having a free filter bed, a discharger having blades for discharging raw material residues on the extraction bed to a discharge port, and a plurality of cleaning nozzles for injecting a cleaning liquid are provided.

  Therefore, the raw material residue can be discharged from the discharge port by the discharge machine in the sealed state, and the tank can be cleaned by spraying the cleaning liquid with the cleaning nozzle by positioning the filter floor in the “inclined position” in the closed state. It is possible to provide an extraction apparatus suitable for a particularly large extraction tank, which has no problems of odor, residue scattering and cleaning liquid scattering compared to the mold, and which is easy in hygiene management and production efficiency.

The side view which cut and showed the principal part of the extraction device comprised according to this invention. The top view seen in the AA arrow direction of FIG. FIG. 2 is a cross-sectional plan view as viewed in the direction of the arrows B-B in FIG. 1 (the blades are shown at 90 ° rotated positions). (A) The elements on larger scale of the discharge machine of FIG. 1, (b) is a top view of (a). FIG. 2 is a schematic explanatory diagram of an extraction system including the extraction device illustrated in FIG. 1.

  In the following, an extraction device constructed in accordance with the present invention will be described in more detail with reference to the accompanying drawings illustrating preferred embodiments.

  A description will be given with reference to FIG. The extraction apparatus generally indicated by numeral 2 has a cylindrical extraction tank body 4 that extends vertically, a top lid 6 that has a raw material inlet 6a and an extraction liquid inlet 6b and closes the upper end of the extraction tank body 4, and an extraction liquid receiver. A lower lid 8 that has a space 8a and an extraction liquid outlet 8b and closes the lower end of the extraction tank main body 4, and a raw material residue that is horizontally attached to the extraction tank main body 4 side of the lower lid 8 and is connected to the outside so as to be freely opened and closed The fixed floor 10a in which the discharge port 10b is formed and the "horizontal position" (shown by a solid line) on the same plane as the fixed floor 10a and the inclined "inclined position" (shown by a two-dot chain line) are swingable. The extraction bed 10 having a pair of filter floors 10c for extracting the extraction liquid attached to the container is provided.

  The extraction device 2 further includes a rotatable rotary shaft 12a extending vertically from the lower lid 8 and the fixed bed 10a through the center Z in the extraction tank body 4 and the raw material residue on the extraction bed 10 attached to the rotary shaft 12a. A discharger 12 having a plurality of blades 12b whose tips extend radially along the inner peripheral edge of the extraction tank main body 4 along the upper surface of the extraction bed 10 discharged to the discharge port 10b, the extraction tank main body 4, the upper lid 6, A plurality of cleaning nozzles N are provided on each of the lower lids 8 and spray the cleaning liquid inwardly of each of them.

  The filter bed 10c cleans the inside of the extraction tank by spraying the cleaning liquid with the cleaning nozzle N at the “horizontal position” when the extraction liquid is sprinkled on the input raw material to generate the extraction liquid and when the raw material residue is discharged. In this case, it is positioned at the “inclined position”.

  2 will be described with reference to FIG. The upper lid 6 is formed in a disk shape fixedly attached to the upper end of the extraction tank main body 4, a raw material inlet 6 a is formed on the center axis Z of the circle, and an extraction liquid inlet 6 b is provided at four locations around it. .

  Further, the upper lid 6 is radially offset from the center Z to the tip of a rotatable shaft 14a extending vertically into the extraction tank body 4 at a position offset from the center Z, and the raw material in the extraction tank is smoothed. A leveling machine 14 having a plurality of (4 in the embodiment) leveling plates 14b to be leveled is attached. The shaft 14a is driven by an electric motor 14c attached to the upper lid 6. Further, a level meter 16 for detecting the raw material level continuously, for example, by a laser, is attached to the upper lid 6.

  The extraction liquid receiving space 8a of the lower lid 8 is formed in a pair of half moon containers on both sides of the rotating shaft 12a, and is fixedly attached to the lower end of the extraction tank body 4. The extract outlet 8b is formed at the bottom of each extract receiving space 8a, and the pair of extract outlets 8b are connected by a conduit 8c.

  The extraction liquid receiving space 8a and the extraction liquid outlet 8b are used for draining the cleaning liquid when cleaning the inside of the extraction tank.

  3 will be described with reference to FIG. The fixed bed 10a of the extraction bed 10 extends with a predetermined width W in the diameter direction of the extraction tank body 4, supports the rotary shaft 12a, and discharges to one side in the diameter direction across the axis Z of the rotary shaft 12a. An outlet 10b is provided. An opening / closing valve described later is attached to the discharge port 10b.

  The filter floor 10c of the extraction floor 10 is formed in a “horizontal position” around a pair of half-moon-shaped portions defined between the fixed floor 10a and the inner edge of the extraction tank body 4 with a pivot shaft 10d extending along the fixed floor 10a as a center. ”And an arbitrary“ tilted position ”above (80 ° in FIG. 1). The filter floor 10c is formed by a screen called a well-known wedge wire in which formed wires are arranged in a slit shape. A swinging electric motor 10e is connected to the swinging shaft 10d.

  Cleaning the inside of the extraction tank after discharging the raw material residue is performed by setting the filter bed 10c to 45 °, for example, or at an appropriate angle depending on the properties of the residue.

  The discharger 12 is provided with an electric motor 12c for rotating the rotary shaft 12a on the floor below the lower lid 8, and the blade 12b is rotated counterclockwise as shown by an arrow R (FIG. 3) when viewed from the upper lid 6 side. .

  4 will be described together with FIG. 1 and FIG. The blade 12b of the discharger 12 includes a blade main body 12d formed by a horizontal plate having a size that extends radially straight on both sides of the rotary shaft 12a (axis Z) and enters the width W of the fixed floor 10a, A scraper 12e attached to a surface of the main body 12d facing the fixed floor 10a and attached in a plurality of comb teeth to guide the residue to the discharge port 10b during rotation is provided.

  The blade body 12d has a tip bent in the rotation direction R, and a plurality of brackets 12f for attaching the scraper 12e are mounted side by side. The scraper 12e is formed in a rectangular plate shape with ultra high molecular weight polyethylene, and is attached to the bracket 12f with bolts and nuts so that the clearance or contact state with the fixed floor 10a can be adjusted and exchanged when worn. Yes.

  A fixed bar formed of a pipe-like material extending in parallel with the edge of one side of the fixed floor 10a having a width W and extending above the blade body 12d of the discharger 12 with both ends attached to the inner edge of the extraction tank body 4 18 is provided. This fixed bar 18 suppresses the co-rotation of the residue in the extraction tank body 4 when the residue is sent to the discharge port 10b by the blades 12b, and efficiently discharges the residue.

  With reference to FIG. 5 together with FIG. 1, the outline of the extraction system including the extraction device 2 will be described. The discharge port 10 b of the extraction device 2 is connected to an electric screw feeder 22 that quantitatively delivers the residue via an openable on-off valve 20, and the residue is sent to a dehydrator 26 through a sealed transporter 24. .

  The plurality of cleaning nozzles N are connected to a cleaning water source, and the extraction liquid inlet 6b is connected to an extraction liquid source via open / close cocks. The raw material is introduced into the raw material inlet 6a by pneumatic transportation.

  Mainly referring to FIG. 1, the operation and effect of the extraction device 2 as described above will be described.

  The extraction device 2 swings between an upper lid 6 and a lower lid 8 that close the upper and lower sides of the extraction tank body 4, a fixed bed 10a in which a raw material residue discharge port 10b is formed, and between a "horizontal position" and an "inclined position". An extraction bed 10 having a free filter floor 10c, a discharger 12 having blades 12b for discharging raw material residues on the extraction bed 10 to a discharge port 10b, and a plurality of cleaning nozzles N for injecting a cleaning liquid are provided. .

  Accordingly, the raw material residue can be discharged from the discharge port 10b by the discharger 12 in a sealed state, and the inside of the tank can be cleaned by spraying the cleaning liquid by the cleaning nozzle N with the filter floor 10c positioned in the “inclined position” in the sealed state. Therefore, there is no problem of odor, residue scattering and cleaning liquid scattering compared to the open type, and the hygiene management and production efficiency are easy. The extraction device 2 is suitable for a large extraction tank in which a large amount of raw material residue is generated. Can provide.

  The fixed bed 10a of the extraction device 2 extends with a predetermined width W in the diameter direction of the extraction tank body 4, supports the rotary shaft 12a, and discharges it to at least one side in the diameter direction across the rotary shaft 12a. The filter floor 10c is provided with an outlet 10b, and the filter floor 10c is “horizontally” centering on a rocking shaft 10d extending along the fixed floor 10a in each of a pair of meniscus portions defined between the fixed floor 10a and the inner edge of the extraction tank body 4. It is attached so as to be swingable between a “position” and an arbitrary “inclined position” above.

  Accordingly, the filter floor on which a large amount of raw material residue adheres and is difficult to clean is made into two half-moon shaped filter floors 10c and 10c so that each can be arbitrarily positioned between the “horizontal position” and the “inclined position”. As a result, the cleaning liquid can be ejected from the cleaning nozzle N for easy cleaning.

  Further, the blade 12b of the discharger 12 of the extraction device 2 includes a blade body 12d formed by a horizontal plate in a size that extends straight on both sides of the rotating shaft 12a and enters the width W of the fixed floor 10a, and a blade body. A scraper 10e is attached to a surface facing the fixed floor 10a of 12d and is attached in a plurality of comb teeth to guide the residue to the residue discharge port 10b during rotation.

  Accordingly, when cleaning, the filter floor 10c can be easily set to an arbitrary “inclined position” by positioning the blade body 12d within the width W of the fixed floor 10a. Further, when discharging the raw material residue, the residue can be easily and sufficiently sent out to the discharge port 10b by the plurality of comb-shaped scrapers 10e of the blade body 12d.

  Further, the extraction device 2 includes a bar-shaped fixed bar 18 that extends above the blade body 10d of the discharger 12 in parallel with one edge of the fixed floor 10a and has both ends attached to the inner edge of the extraction tank body 4. .

  Therefore, the fixed bar 18 can suppress the residue from co-rotating in the extraction tank body 4 when the residue is sent to the discharge port 10b by the blades 12b, and the residue can be efficiently discharged.

  Further, the extraction device 2 extends in a horizontal direction from the upper lid 6 toward the inside of the extraction tank body 4 and extends freely in the horizontal direction to the tip of a rotatable shaft 14a, and smoothes the raw materials in the extraction tank. A leveling machine 14 having a leveling plate 14b is provided.

  Therefore, the effective capacity in the extraction tank main body 4 can be ensured, and the extraction efficiency can be improved.

  A screw feeder 22 is provided that is connected to the residue discharge port 10b via the on-off valve 20 and quantitatively supplies the residue to a sealed transporter 24 connected to the dehydrator 26.

  Therefore, the raw material residue can be processed without being released and exposed to the outside.

2: Extraction device 4: Extraction tank body 6: Upper lid 6a: Raw material inlet 6b: Extraction liquid inlet 8: Lower lid 8a: Extraction liquid receiving space 8b: Extraction liquid outlet 10: Extraction bed 10a: Fixed bed 10b: Discharge port 10c : Filter floor 12: Discharge machine 12a: Rotating shaft 12b: Blade N: Cleaning nozzle

Claims (6)

A cylindrical extraction tank body extending vertically;
An upper lid that has a raw material inlet and an extraction liquid inlet and closes the upper end of the extraction tank body;
A lower lid that has an extraction liquid receiving space and an extraction liquid outlet and closes the lower end of the extraction tank body;
A fixed floor that is horizontally attached to the extraction tank main body side of this lower lid and is connected to the outside so as to be freely opened and closed, and a “horizontal position” that is inclined with the “horizontal position” on the same plane as the fixed floor. And an extraction bed having a filter bed for extraction liquid extraction that is swingably movable between
A rotatable rotation shaft that extends vertically from the bottom of the lower lid and fixed bed to the center of the extraction tank body, and the tip is extracted along the upper surface of the extraction bed that is attached to this rotation shaft and discharges the raw material residue on the extraction bed to the discharge port. An ejector having a plurality of radially extending blades rotating along the inner periphery of the tank body;
A plurality of cleaning nozzles installed in each of the extraction tank main body, the upper lid, and the lower lid for injecting a cleaning liquid to the inside thereof,
The filter floor sprays the extraction liquid onto the input raw material to produce the extraction liquid and discharges the raw material residue to the “horizontal position”, and sprays the cleaning liquid from the cleaning nozzle to “inclined position”. Positioned in the
An extraction device characterized by that. Fixed floor
Extending with a predetermined width in the diameter direction of the extraction tank main body, supporting the rotating shaft, provided with a discharge port on at least one side in the diameter direction across the rotating shaft,
Filter floor
A pair of meniscus portions defined between the fixed bed and the inner edge of the extraction tank main body, between a “horizontal position” and an arbitrary “inclined position” above the swing axis extending along the fixed bed. It is mounted so that it can swing freely.
The extraction device according to claim 1. The blades of the ejector
A blade body formed by a horizontal plate in a size that extends straight on both sides of the rotating shaft and enters the width of the fixed floor;
A scraper attached to a surface of the blade body facing the fixed floor and attached in a plurality of comb teeth to guide the residue to the residue discharge port during rotation.
The extraction device according to claim 2. A bar-like fixed bar that extends above the blade body of the discharger in parallel with the edge of one side of the fixed floor and has both ends attached to the inner edge of the extraction tank body,
The extraction device according to claim 3. A leveling machine having a plurality of leveling plates that extend radially in the horizontal direction at the tip of a freely rotating shaft extending vertically from the upper lid toward the inside of the extraction tank body and smoothes the raw material in the extraction tank smoothly. Have
The extraction device according to any one of claims 1 to 4, wherein A screw feeder is connected to the residue discharge port via an on-off valve, and quantitatively supplies the residue to a sealed transporter connected to the dehydrator.
The extraction device according to claim 1, wherein the extraction device is a device.

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