JPH0570421U - Extraction tank device in the extractor - Google Patents

Abstract

(57) [Summary] [Purpose] It is an object of the present invention to provide an extraction tank device in an extraction machine that is devised to prevent oxidation. [Structure] A head pipe of the extraction tank is connected with a feed pipe for enclosing nitrogen gas therein.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an extraction tank device in an extractor for tea, coffee, herbal medicine and the like.

[0002]

[Prior Art]

 Conventionally, extraction work was performed with outside air inside the head space of the extraction tank. Therefore, the substance to be extracted was oxidized by the outside air. Such oxidization is not preferable because it also leads to deterioration of quality, and is not particularly preferable in the case of tea, coffee, herbal medicine and the like.

[0003]

[Problems to be solved by the device]

 An object of the present invention is to provide an extraction tank device in a new extractor which is devised to prevent oxidation.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the extractor in the extractor according to the present invention has a feed pipe for enclosing nitrogen gas in the head space of the extractor connected to the extractor.

[0005]

【Example】

 In order to make it easier to understand the description of the embodiment of the present invention, a demonstration machine as shown in the figure will be used. That is, in this demonstration machine, raw water is heated to a predetermined temperature by a plate heat exchanger (not shown), and the hot water pipe 1 for extraction, the hot water pipe 2 for jacket heating and the hot water pipe 3 for CIP (cleaning) are heated. A hot water supply device that supplies at a constant flow rate, a raw material supply device 6 that takes out the raw material from the raw material tank 4 with a rotary valve 5 and sends it to the extraction device body 8 by air transportation or natural fall, and a screen conveyor 7 that holds the raw material and hot water.・ Extractor body 8 to be conveyed, feed pipe 49 for enclosing nitrogen gas in the head space of extraction tank 18, and extraction with vibrating sieve 9, net conveyor, etc. according to the extraction raw material such as tea, coffee, herbal medicine, etc. A separation device 10 for separating liquid and lees, and a liquid feeding device 11 for sending the extraction liquid to the next step are provided, which supply hot water, supply raw materials, extract, P and the like are controlled by a sequence control board (not shown).

Next, the raw material supply device 6 and the extraction device main body 8 will be described in detail. That is, the raw material supply device 6 has a screw feeder 14 that rotates in the forward and reverse directions at the bottom of the raw material tank 4, and has a main portion 13 in which dispensing ports 15 and 16 are provided at both ends of the screw feeder 14. The raw material is quantitatively dispensed from one dispensing port 15 by the forward rotation of the screw feeder 14, and the dispensed raw material is naturally dropped into the extraction tank 18 via the first rotary valve 5, and the other dispensing port is also dispensed. The material is quantitatively discharged from 16 by the reverse rotation of the screw feeder 14, and the discharged raw material is sent to the transportation pipe 20 through the second rotary valve 19, and is blown from a blower (not shown) flowing in the transportation pipe 20. The raw material is sent to the cyclone separator 21 by air, and the raw material separated by the cyclone separator 21 is passed through the first rotary valve 5. It is adapted to put into the extraction vessel 18 Te. Actually, the raw materials separated by the cyclone separator 21 are put into another extractor (not shown) at a remote place.

The extraction device main body 7 has a gutter-shaped extraction tank 18 having a semi-cylindrical bottom surface, a screw conveyor 7 capable of changing the number of rotations in the extraction tank 18, and several openings of the extraction tank 18. A plurality of opening / closing lids 24 that can be individually opened / closed and are closed, and a large number on the wall surface provided in a state of rotating inside these opening / closing lids 24 and in a state where hot water is supplied from the CIP hot water pipe 3 A jacket for overheating provided with a rotary cleaning pipe 27 having a small hole 26 and a peripheral wall of the extraction tank 18 and a state in which hot water is supplied from the jacket heating hot water pipe 2 through an inlet 28 and discharged through an outlet 29. 30 and a discharge port device 31 having a function of discharging the raw meal and the extract together and a function of separating and discharging the raw meal and the extract (which will be described later in detail), and the raw meal and the extract. In the case of simultaneous discharge of the raw meal and the extract, the raw meal and the extract are discharged to the vibrating sieve 9 side through the first inner pipe 32, and when the raw meal and the extract are separated and discharged, the raw meal is extracted from the first guide tube. 32, and the extract is passed through the second guide pipe 34 and the strainer 35 to the storage tank 33. Further, the extract discharged from the vibrating screen 9 is passed to the storage tank 33, and then discharged from the vibrating screen 9. The raw material dregs are discharged into the dreg tank 36.

Next, the discharge port device 31 will be described. That is, the discharge A port 38 and the discharge B port 39 are provided on opposite sides of the discharge side end of the extraction tank 18, and the discharge A port 38 is provided with the first guide pipe 32 and the discharge B port 39 is provided with the second guide pipe 32. Connect the pipe 34 and attach the dam A40 to the discharge A port 38 so that it can be raised or lowered and the dam B41 to the discharge B port 39 so that it can be raised or lowered. A mesh 42 is stretched over 39.

The raw material supply device 6 is mounted on a trolley 45 that can move on rails 43 and 44, and the whole of the raw material supply device 6 is arbitrarily moved toward or away from the longitudinal direction of the extraction tank 18, that is, the discharge port device 31. You can move in any direction.

In the figure, reference numeral 46 is a mount, 47 is a stopper, 48 is a rotary blade of the screw conveyor 7, and 50 is an exhaust pipe.

The demonstration machine takes out the raw material from the raw material tank 4 with the screw feeder 14 and conveys the raw material to the extraction tank 18 by pneumatic transportation or natural fall. This conveyance amount can be increased or decreased by controlling the rotation speed of the screw feeder 14. Further, switching between pneumatic transportation through the cyclone separator 21 and spontaneous fall can be performed by changing the rotation direction of the screw feeder 14. The first rotary valve 5 and the second rotary valve 19 block steam from the extraction tank 18 to prevent the raw material from getting wet. The extraction tank 18 receives the raw material sent from the raw material supply device 6 and the hot water sent from the hot water supply device, mixes these with the screw conveyor 7 rotating at the center of the tank, and then mixes them with the discharge port device 31. It is transported to the direction and extracted. The extraction time can be set arbitrarily by changing the rotation speed of the screen conveyor 7.

The extract liquid that has reached the discharge port device 31 is discharged from the discharge A port 38 to the first guide pipe 32 together with the raw meal when the dam A 40 is set lower than the dam B 41. In this case, the raw material cake rotary vanes 48 and the extract are discharged by overflow. When the dam A40 is set higher than the dam B41, the extract is discharged from the discharge B port 39, and the raw meal (including some extract) is discharged from the discharge A port 38. Also in this case, the raw meal is discharged by the rotary blades 48, and the extract is discharged by the overflow. The mixture of the raw material meal and the extraction liquid that has flowed from the discharge A port 38 to the first guide pipe 32 is passed through the vibrating screen 9 to send the extract liquid to the liquid storage tank 33, and the discharge B port 39 to the first guide pipe 32. The extracted liquid is sent to the same liquid storage tank 33, and from this liquid storage tank 33 is sent to the next step.

At the time of cleaning, the rotary cleaning pipe 27 rotates to wash away all the dirt in the extraction tank 18. Further, by moving the raw material supply device 6 along the rails 43, 44, the extraction time becomes short when the dropping position of the raw material is brought close to the discharge port device, and becomes long when it is made far away.

[0014]

[Action]

 Since the present invention is characterized in that a feed pipe for enclosing nitrogen gas in the head space of the extraction tank is connected to the same tank, the nitrogen gas is fed from this feed pipe as necessary to feed the head space. The outside air is expelled from the inside, the interior is filled with nitrogen gas by this expulsion, and the extraction work is performed in this state.

[0015]

[Effect of the device]

 The extraction tank device of the extractor according to the present invention is capable of performing extraction work in a state where the head space is filled with nitrogen gas as described above, and is suitable for extraction of teas, coffee, and herbal medicines that do not like oxidation. It is a thing.

[Brief description of drawings]

FIG. 1 is an overall side view showing an embodiment of the present invention.

FIG. 2 is a rear view of the same.

FIG. 3 is a sectional view of an outlet device.

FIG. 4 is a sectional view showing a state in which the heights of dams A and B are also changed.

[Explanation of symbols]

1 Hot Water Pipe for Extraction 2 Hot Water Pipe for Jacket Heating 3 Hot Water Pipe for CIP 4 Raw Material Tank 5 Rotary Valve 6 Raw Material Supply Device 7 Screw Conveyor 8 Extractor Main Body 9 Vibrating Sieve 10 Separator 11 Liquid Transfer Device 13 Main Part 14 Screw Feeder 15 Discharge port 16 Discharge port 18 Extraction tank 19 Second rotary valve 20 Transport pipe 21 Cyclone separator 24 Opening / closing lid 26 Small hole 27 Rotating cleaning pipe 28 Inlet 29 Outlet 30 Overheating jacket 31 Discharge port device 32 First guide pipe 33 Liquid storage tank 34 2nd guide pipe 35 Strainer 36 Meal filling tank 38 Discharge A port 39 Discharge B port 40 Dam A 41 Dam B 42 Mesh 43 Rail 44 Rail 45 Carriage 46 Frame 47 Stopper 48 Rotor blade 49 Feed pipe 50 Exhaust pipe

Claims (1)

[Scope of utility model registration request] 1. An extraction tank apparatus in an extraction machine, wherein a feed pipe for enclosing nitrogen gas in the head space of the extraction tank is connected to the same tank.