JP2003024702A - Batch-wise continuous extracting equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide batch-wise continuous extracting equipment capable of selecting the extracting direction in an extractor corresponding to the kind of a raw material to be extracted. SOLUTION: The batch-wise continuous extracting equipment is equipped with a plurality of extractors receiving the raw material to be extracted from above and discharging extraction residue from below, the upper piping 4 connected to the upper parts of the extractors 2 through filters 3, the lower piping 5 connected to the lower parts of the extractors 2 through a filter 3, extraction water supply piping 8a and 8b connected to the upper and lower piping 4 and 5 of the extractors 2 through valves 6 and 7 and extractor connection piping 9 communicating with the upper piping 4 of the extractors 2 becoming an upstream side and the lower piping 5 of the extractors 2 becoming an upstream side or with the lower piping 5 of the extractors 2 becoming an upstream side and the upper piping 4 of the extractors 2 becoming a downstream side so as to be able to be changed over.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a batch continuous extraction apparatus for automatically extracting a high-concentration extract from an extraction raw material such as coffee, tea and crude drugs. 2. Description of the Related Art As an apparatus for extracting a high-flavor, high-concentration extract from an extraction material such as coffee or tea, a number of extractors containing the extraction material are connected in series by piping, and one end of the connection is provided. A continuous batch extraction device that injects extraction water, such as warm water, into the extractor and automatically collects the extract that gradually increases in concentration from the final extractor each time it passes through multiple connected extractors It's being used. [0003] By the way, generally, in the case of beans such as coffee, the extraction direction in the extractor is upward from the bottom, that is, water for extraction is introduced from below the extractor, and the extraction direction of the extractor is reduced. It is known that collecting the extract from the top can obtain a higher concentration more efficiently than extracting the extract from top to bottom, while it spreads when it contains moisture such as tea leaves It is known that a raw material having properties can be efficiently obtained with a higher concentration when the extraction direction in the extractor is set from top to bottom. [0004] For this reason, when producing beverages having different raw material properties, such as coffee and tea, depending on the type of raw material to be extracted,
Either use a batch continuous extraction device having a piping structure in which the extraction direction is from top to bottom and a batch continuous extraction device having a piping structure in which the extraction direction is from bottom to top, or sacrifice the extraction efficiency of one extraction raw material. Thus, one type of continuous batch extractor had to be used for both extraction raw materials. [0005] The present invention has been made in view of such a problem, and has as its object to provide a continuous batch extraction apparatus capable of selecting an extraction direction in an extractor according to the type of an extraction raw material. In order to achieve the above object, a continuous batch extraction apparatus according to claim 1 connects a plurality of extractors containing extraction raw materials in series by piping and extracts one end. This is a batch continuous extraction device that presses water for extraction into the vessel and takes out the extract extracted at high concentration from the extractor at the final end. Vessel, an upper pipe connected to the upper part of the extractor via a filter, a lower pipe connected to a lower part of the extractor via a filter, and the upper pipe and the lower pipe of each extractor, respectively. Extraction water supply pipe connected via a valve, the upper pipe of the extractor on the upstream side and the lower pipe of the extractor on the downstream side, or the lower pipe of the extractor on the upstream side and the extractor on the downstream side Switchable top piping And extractor connection pipes that communicate with each other. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a continuous batch extracting apparatus according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the batch continuous extraction apparatus 1 includes, for example, six extractors 2, an upper pipe 4 connected to an upper part of the extractor 2 via a filter 3, and a lower part of the extractor 2. A lower pipe 5 connected via the filter 3; an extraction water supply pipe 8 connected to the upper pipe 4 and the lower pipe 5 of each extractor 2 via valves 6 and 7, respectively; 2, an upper pipe 4 and a lower pipe 5 of the extractor 2 on the downstream side;
Or extractor connecting pipes 9 that switchably communicate the lower pipe 5 of the extractor 2 on the upstream side and the upper pipe 4 of the extractor 2 on the downstream side. After a set amount of extraction raw material is injected into the extractor 2 by the cyclone receiver tank 10 provided above, the four extractors 2 are connected in series, and the charged water as extraction water is injected into the extractor 2 at one end. Then, the extract extracted at a high concentration from the extractor 2 at the final end is automatically collected. Hereinafter, this will be described in more detail. As shown in FIG. 2, the extractor 2 has an inlet 11 formed at the upper end thereof for the raw material to be charged from the cyclone receiver tank 10, and an outlet 12 at the lower end for discharging the extracted cake. Consisting of a pressure-resistant container formed with
An upper pipe 4 is connected to the upper part through a filter 3 and is connected to the lower pipe 5.
Are connected to each other. The upper pipe 4 and the lower pipe 5
Is a supply pipe for the hot water charged to the extractor 2 or a discharge pipe for the extracted liquid extracted inside the extractor 2. A heat insulation jacket 14 is provided around the extractor 2, and high-temperature steam is appropriately supplied into the jacket.
The inside is kept at a constant temperature. Further, in the upper part of the extractor 2, a spray ball 13 for jetting a washing water in a shower-like manner to discharge the extracted cake from the discharge port 12 and clean the inside at the same time.
Is fixed. In addition, as the filter 3,
Since a so-called wedge wire screen, which is hardly clogged, is employed, the extracted residue clogged at the joint of the filter 3 is almost completely removed by only the cleaning liquid ejected from the spray ball 13. For this reason, cleaning inside the extractor 2
The cleaning can be sufficiently performed only by spraying the cleaning liquid from the spray ball 13, and the number of cleaning maintenance steps can be reduced. As shown in FIG. 1, the extraction water supply pipe 8 is connected to a charged hot water supply device 15 including a charged hot water tank 15a, a high pressure pump 15b, and the like. And a lower extraction water supply pipe 8b disposed below the extractor 2. The upper extraction water supply pipe 8a and the upper pipe 4 of each extractor 2 are connected via a valve 6, and the lower extraction water supply pipe 8b and the lower pipe 5 of each extractor 2 are connected via a valve 7. ing. As described above, when the extractor 2 is connected, the extractor connection piping 9 is connected to the extractor 2 which is located on the upstream side.
Upper pipe 4 and a lower pipe of the extractor 2 downstream of the extractor 2 or a lower pipe 5 of the extractor 2 upstream of the extractor 2
And the upper pipe 4 of the extractor 2 on the downstream side in a switchable manner. The extractor connection pipes 9 are composed of, for example, pipes and valves as illustrated. That is, one end is connected to the extractor 2 side from the valve 6 of the upper pipe 4 via the valve 18, and the other end is connected to the extractor 2 side from the valve 7 of the lower pipe 5 via the valve 19. 16 and a connecting pipe 20 for connecting the upper and lower connecting pipes 16 of the adjacent extractors 2 (to be connected). According to the piping configuration, for example, when the upper piping 4 of the extractor A and the lower piping 5 of the extractor B communicate with each other, the valve 21 provided in the middle of the connection piping 20 is opened, and the upper part of the extractor A is opened. The valve 18 on the pipe 4 side and the valve 19 on the lower pipe 5 side of the extractor B are opened. When the lower pipe 5 of the extractor A and the upper pipe 4 of the extractor B communicate with each other, the valve 21 is opened and the valve 19 provided on the lower pipe side of the extractor A and the upper part of the extractor B are connected. The valve 18 provided on the pipe side is opened. In addition, the extractor connection piping 9 which communicates switchably as described above is
The present invention is not limited to this piping configuration, and extractor connection piping that can switchably communicate as described above may be provided by another piping configuration. The cyclone receiver tank 10 is for automatically taking in and storing a set amount of extracted raw material conveyed through a pipe from a storage tank for extracted raw material (not shown). It is connected to the inlet 11 of the vessel 2. Below the extractors 2, there is provided an unillustrated extracted cake conveying device which receives and conveys the extracted cake discharged from the outlet 12 thereof. A branch recovery pipe 2 having a valve 23 at an intermediate portion upstream of the valve 21 of the connection pipe 20.
4 is connected at one end, and each branch collection pipe 24 is integrated with one collection pipe 25 at the other end side, and is connected to a storage tank 28 and a cut tank 29 via a cooling plate 26 and a plurality of appropriately arranged valves 27. It is connected to the. Next, a series of operations performed by the continuous batch extracting apparatus 1 when producing an extract will be described. The valves used in each part of the continuous batch extraction apparatus 1 can be remotely operated such as electric valves, and these valves operate according to sequence control by a control panel (not shown). In addition, "upward extraction" which sets the extraction direction in the extractor from bottom to top as the extraction method
The operator can select and instruct "downward extraction" to change the extraction direction from top to bottom from the control panel.
Further, the description will be made on the assumption that the batch continuous extraction apparatus 1 has all valves closed in an initial state. First, by performing a predetermined operation on the control panel, the extracted raw material is transported from an extracted raw material storage tank (not shown) in which the extracted raw material is stored, and the extracted raw material is accumulated in the cyclone receiver tank 10 in a set amount. Is done. Then, when "upward extraction" is instructed to be selected, the raw material charging valve 22 is opened, and the raw material for extraction in each cyclone receiver tank 10 is charged into the extractor 2 respectively. Next, a valve 7 between the lower extraction water supply pipe 8b and the lower pipe 5 of the extractor A and an air vent valve (not shown) provided to release the air in the extractor A to the atmosphere are opened. Then, the high-pressure pump 15b is operated, and as shown in FIG. 3, the charged hot water stored in the charged hot water tank 15a is injected into the extractor A via the lower extraction water supply pipe 8b and the lower pipe 5. When the inside of the extractor A becomes full with the extraction water, a sensing signal of a not-shown full sensor is transmitted to the control panel,
The high pressure pump 15b is stopped, the air vent valve and the valve 7 between the lower pipe 5 and the lower extraction water supply pipe 8b are closed, and the extraction holding timer in the control panel is started to extract components from the raw material. This state is maintained for a predetermined time. When the time set in the extraction holding timer elapses, a valve 18 provided between the upper pipe 4 of the extractor A and the upper and lower connection pipes 16 between the extractor A and the extractor B, 20 and the valve 19 provided between the lower pipe 5 of the extractor B and the upper and lower connection pipe 16 are opened, and the high-pressure pump 15b is opened.
Is operated, and as shown in FIG. 4, the charged hot water is further injected from the lower pipe 5 of the extractor A, and the extract extracted in the extractor A is the upper pipe 4 and the lower pipe 5 of the extractor B. Through the extractor B. When the inside of the extractor B becomes full, the detection signal of the full sensor of the extractor B (not shown) is transmitted to the control panel, as in the case where the inside of the extractor A becomes full. The high-pressure pump 15b stops, and the air release valve and the extractor A
The valve 7 between the lower pipe 5 and the lower extraction water supply pipe 8b is closed, the extraction holding timer in the control panel is started, and this state is held for a predetermined time. The above operation is performed in the same manner for the extractors C and D. When the extractor D is in a full state and a predetermined time has elapsed by the full sensor, then as shown in FIG. Next, the valve 23 provided in the branch recovery pipe 24 between the extractor D and the extractor E is opened, and the high-pressure pump 15
b is operated, and the charged hot water is further injected from the lower pipe 5 of the extractor A, and the extract is discharged from the upper pipe 4 of the extractor D at the final end, cooled by the cooling plate 26, and cooled by the storage plate 28 or It is transferred to the cut tank 29. This storage tank 28 or cut tank 2
Switching of the line to 9 is performed based on the concentration of the extract. That is, the concentration sensor 3 provided in the collection pipe 25
According to 1, when it is determined that the concentration is higher than the specified concentration, the valve 27 is opened and closed appropriately to transfer the extracted liquid to the storage tank 28, while when it is determined that the concentration is lower than the specified concentration, the extracted liquid is cut into the cut tank 29. The liquid is transferred. Usually, the concentration is low at the start of the extraction, so that it is transferred to the cut tank 29. However, the concentration immediately becomes a specified value, the pipeline is switched and transferred to the storage tank 28, and the concentration of the extract falls below the specified value again. Extraction is continued until. When the concentration of the extract recovered in the storage tank 28 becomes lower than the specified value again, the extractor A is disconnected from the extractors A to D connected in series and the extractors B to E are connected. Is performed. That is, FIG.
As shown in the figure, the valve 7 between the lower pipe 5 of the extractor B and the lower extraction water supply pipe 8b is opened, and the valve 7 between the lower pipe 5 of the extractor A and the lower extraction water supply pipe 8b and The valves 18, 21, and 19 on the conduit connecting the extractor A and the extractor B are closed, and the valve 23 of the branch collection pipe 24 connecting the extractor D and the collection pipe 25 is closed. Then, the upper pipe 4 of the extractor D and the lower pipe 5 of the extractor E are communicated by opening the valves 18, 21, 19, so that the extractor B to the extractor E are connected in series. You. On the other hand, in the extractor A, which is disconnected from the connection and in which the extracted cake is left inside, the operation of discharging the extracted cake and charging a new extracted raw material is performed. That is, the discharge port valve 30 provided at the discharge port is opened, the extracted cake inside is discharged to the extracted cake conveying device below (not shown), and the cleaning liquid is ejected from the spray ball 13 to clean the inside. After that, the outlet valve 30 is closed, the raw material charging valve 22 is opened again, and the set amount of extracted raw material stored in the cyclone receiver tank 10 is charged into the extractor A. As described above, the continuous batch extracting apparatus 1 has
The continuous extraction operation is performed by performing the extraction by connecting the four extractors 2 of the one extractor while sequentially changing them, while cleaning the insides of the other two extractors 2 and replacing the extraction raw materials. . Note that, of course, the number of extractors 2 and the number of connected extractors 2 may not be limited to the above,
For example, the same continuous operation can be performed by installing three extractors and connecting two extractors. Next, the operation of the continuous batch extracting apparatus 1 when "downward extraction" is instructed from the control panel will be described. First, by performing a predetermined operation on the control panel, the extracted raw material is transported from an unillustrated extracted raw material storage tank in which the extracted raw material is stored, and the extracted raw material is accumulated in the cyclone receiver tank 10 in a set amount. Is done. Then, when "downward extraction" is selected and selected, the raw material charging valve 22 is opened, and the raw material for extraction in each cyclone receiver tank 10 is charged into the extractor 2. Next, as shown in FIG. 7, a valve 6 provided between the upper extraction water supply pipe 8a and the upper pipe 4 of the extractor A and an air release valve (not shown) of the extractor A are opened, and The pump 15b is operated, and the upper extraction water supply pipe 8a and the upper pipe 4
The hot water charged is injected into the extractor A via. When the inside of the extractor A becomes full with the extraction water, a detection signal of a not-shown full sensor is transmitted to the control panel.
The high-pressure pump 15b is stopped, the air release valve and the valve 6 are closed, and the extraction holding timer in the control panel is started. When the time set in the extraction holding timer elapses, as shown in FIG. 8, between the extractor A and the extractor B, the lower pipe 5 of the extractor A and the upper and lower connection pipes 16 are connected.
The valve 19 provided between the upper and lower connection pipes 16 of the extractor B and the valve 18 provided between the upper and lower connection pipes 16 of the extractor B are opened, and the high-pressure pump 15b is operated. Then, the charged hot water is further injected from the upper pipe 4 of the extractor A, and the extract extracted in the extractor A is passed through the lower pipe 5 of the extractor A and the upper pipe 4 of the extractor B into the extractor B. Pressed into. When the inside of the extractor B becomes full, the sensing signal of the full sensor of the extractor B (not shown) is transmitted to the control panel, as in the case where the inside of the extractor A becomes full. The high-pressure pump 15b is stopped, the air release valve and the valve 6 between the upper pipe 4 and the upper extraction water supply pipe 8a are closed, an extraction holding timer in the control panel is started, and this state is held for a predetermined time. The above operation is similarly performed for the extractors C and D. When the extractor D becomes full and a predetermined time elapses with the full sensor, the next operation is as shown in FIG. Next, the valve 23 provided in the branch recovery pipe 24 between the extractor D and the extractor E is opened, and the high-pressure pump 15
b is operated, the charged hot water is further injected from the upper pipe 4 of the extractor A, and the extracted liquid is discharged from the lower pipe 5 of the extractor D, which is the final end. Similarly, the storage tank 28 or the cut tank 2
9 as appropriate. Then, as in the case of "upward extraction",
When the concentration of the extract transferred to the storage tank 28 becomes lower than the specified concentration, the extractor A is disconnected from the extractors A to D connected in series, and an operation of connecting the extractors B to E is performed. That is, the valve 6 between the upper pipe 4 of the extractor B and the upper extraction water supply pipe 8a is opened, and the upper pipe 4 of the extractor A and the upper extraction water supply pipe 8a are opened.
a and the valves 19, 21 and 18 on the line connecting the extractor A and the extractor B are closed, and the valve on the line connecting the extractor D and the collection line 25 is closed. 23 is closed. When the valve 21 provided between the extractor D and the extractor E and the valve 18 provided between the upper pipe 4 of the extractor E and the upper and lower connection pipe 16 are opened, the lower pipe 5 of the extractor D The upper pipe 4 of the extractor E is connected, and the extractor B to the extractor E are connected in series. The operation described above is repeated, and the same as in the case of "upward extraction", four of the six extractors are connected.
While successively replacing the two extractors 2, the two extractors 2 are disconnected from the connection, and the continuous extraction operation is performed while cleaning the inside and replacing the extraction raw material. As is clear from the above description, according to the batch continuous extraction apparatus 1, the extraction direction in the extractor 2 is appropriately selected from the control panel without changing the piping equipment and the like, and the continuous extraction is performed. It is possible to drive. According to the first aspect of the present invention, there is provided a continuous batch extracting apparatus,
A plurality of extractors, an upper pipe connected to an upper part of the extractor via a filter, a lower pipe connected to a lower part of the extractor via a filter, and the upper pipe and the lower part of each extractor Extraction water supply pipes connected to the pipes via valves, respectively, the upper pipe of the extractor on the upstream side and the lower pipe of the extractor on the downstream side, or the lower pipe and the downstream side of the extractor on the upstream side Extractor connecting pipes that can switchably communicate the upper pipe of the extractor, so that the extraction direction in the extractor is appropriately selected according to the type of the extraction raw material to perform the continuous extraction operation. It is possible, for a beverage maker etc. that produces many types of beverages, installing two types of devices with different extraction directions in the extractor,
Although the extraction efficiency is reduced for some extraction raw materials, the problem that one type of apparatus must be used for capital investment is solved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a piping diagram showing a continuous batch extraction apparatus according to an embodiment of the present invention. FIG. 2 is a longitudinal sectional view of the extractor. FIG. 3 is an explanatory diagram showing a state in which extraction water is being injected into a first extractor by upward extraction. FIG. 4 is an explanatory diagram showing a state in which extraction water is being injected into a second extractor by upward extraction. FIG. 5 is an explanatory diagram showing a state in which an extract is collected in a storage tank by upward extraction. FIG. 6 is an explanatory diagram showing an operation in a case where the connected extractors are switched. FIG. 7 is an explanatory diagram showing a state in which extraction water is being injected into a first extractor by downward extraction. FIG. 8 is an explanatory diagram showing a state in which extraction water is being injected into a second extractor by downward extraction. FIG. 9 is an explanatory diagram showing a state in which an extract is collected in a storage tank by downward extraction. [Description of Signs] 1 Batch continuous extraction device 2 Extractor 3 Filter 4 Upper pipe 5 Lower pipe 8 Extracted water supply pipe 8a Upper extracted water supply pipe 8b Lower extracted water supply pipe 9 Extractor connection pipes 16 Vertical connection pipe 18, 19, 21 Valve 20 Connecting pipe

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Hiroyasu Karima             5-11-8 Nishinakajima, Yodogawa-ku, Osaka-shi, Osaka               Shin-Osaka Kimura Daiichi Building Itochu Hudek             Inside the company F term (reference) 4B027 FB11 FB22 FP73 FQ07                 4D056 AB12 AC22 BA11 CA02 CA03                       CA11 CA18 CA20 CA22 CA25                       CA28 CA33 CA37 CA40 DA01                       DA06

Claims (1)

Claims 1. A plurality of extractors containing raw materials for extraction are connected in series by a pipe, and water for extraction is injected into one of the extractors at one end to be extracted at a high concentration from the extractor at the last end. A batch continuous extraction device for extracting the extracted liquid, wherein a plurality of extractors are charged with an extraction raw material from the top and discharge the extracted cake from the bottom, and an upper pipe connected to a top of the extractor via a filter. A lower pipe connected to the lower part of the extractor via a filter, an extraction water supply pipe connected to the upper pipe and the lower pipe of each extractor via a valve, respectively, and an extractor on the upstream side Extractor connection piping for switchably communicating the upper pipe of the lower extractor downstream of the extractor or the lower pipe of the extractor upstream and the upper pipe of the extractor downstream. Batch continuous extraction apparatus characterized by the following: .