JP2934820B2 - Buckwheat flour sterilizer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to the related sterilizing transportation device buckwheat flour to directly air transport more sterile buckwheat flour sterilization equipment of buckwheat flour to sterilize buckwheat flour obtained by milling Xuan buckwheat It is.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. 1-281047 discloses that buckwheat flour in a container is sterilized by storing the buckwheat flour in a container, irradiating microwaves while evacuating the container, and heating the buckwheat flour in the container. A method for disinfecting buckwheat flour is disclosed. Further, a method of continuously sterilizing by injecting superheated steam and floating / moving buckwheat flour in the air stream, and a method of batch sterilizing by injecting and pressurizing superheated steam are known. .

[0003]

According to the sterilization method disclosed in the above publication, buckwheat flour is contained in a container, subjected to a sterilization treatment, then the buckwheat flour is taken out of the container and untreated to be subjected to a sterilization treatment. Of the buckwheat flour is stored again. Therefore, when the buckwheat flour that has been sterilized is taken out of the container and transferred, there is a problem in that the treated buckwheat flour comes into contact with the outside air of the workplace, which may cause secondary contamination. Also, in order to maintain the quality of buckwheat flour, it is necessary to keep the active water content of buckwheat flour within the range of 10 to 13%. There is a problem that the active water content of the buckwheat flour cannot be maintained because the buckwheat flour diffuses into the outside air without being adsorbed again by the buckwheat flour.

[0004] In the sterilization method using superheated steam, the steam under pressure must be discharged before removing the buckwheat flour after the sterilization treatment, and the buckwheat flour is discharged together with the steam when discharging the steam. There is a problem that the yield is deteriorated due to discharge. Further, since buckwheat flour is sterilized in superheated steam, there is a problem that it is difficult to maintain the active water content of buckwheat flour within a required range. Further, in the continuous type, pneumatic transportation is carried out by pressure feeding, and therefore, a branch valve for preventing backflow due to pressure feeding must be provided in a branch passage for carrying buckwheat flour in pneumatic transportation, and this prevention valve is provided with steam. However, there is a problem that buckwheat flour adheres due to condensation.

[0005] In order to solve the above-mentioned problems, the present invention provides a buckwheat flour sterilizer that can be sterilized by continuous treatment at a high temperature without using superheated steam while the buckwheat flour is transferred at a high speed. it is an technical problem of providing a sterilizing transportation device buckwheat flour can be transported directly to the packaging process without exposing the buckwheat flour which is sterilized to the outside air by.

[0006]

The technical problem can be solved by the present invention as described below. That is, the buckwheat flour disinfection and transport device according to the present invention includes a cylindrical body having a cylindrical cavity at substantially the center, with the cylindrical cavity arranged sideways, and a plurality of stages that fit on the rotation axis with the inner peripheral wall of the cylindrical cavity. A combination of at least two types of screw blades is inserted and positioned, and the rotation axis is positioned at the center line of the cylindrical cavity and inserted to form a gap between the valley of the screw blade and the inner peripheral wall of the cylindrical cavity. A buckwheat flour sterilizer for pumping buckwheat flour to an outlet at a high temperature by helical movement of the gap due to rotation of a screw blade.
Sterilize the buckwheat flour and transport the buckwheat flour to the packaging process
Sterilization transport of buckwheat flour pneumatically transported by suction to transport
An apparatus, wherein the sterilization apparatus discharges sterilized buckwheat flour.
Is discharged from the buckwheat flour and discharged together with the buckwheat flour
Adsorbed moisture to the buckwheat flour again while being transported by air
Are connected .

Further, the buckwheat flour disinfection and transport apparatus according to the present invention is characterized in that a cylindrical body having a plurality of cylindrical cavities substantially at the center is turned sideways so that the adjacent cylindrical cavities are opposed to each other in the longitudinal direction. The overlap of the peripheral walls is opened to form one transport path composed of the plurality of cylindrical cavities, and at least two types of screw blades composed of a plurality of stages that fit on the inner peripheral wall of the cylindrical cavity are combined with the rotating shaft, and each is inserted and attached. Then, the peaks and valleys of adjacent screw blades of the same type are fitted with play, and each rotating shaft is positioned at the center line of the cylindrical cavity and inserted, and the valleys of the screw blades and the cylindrical shape are inserted. forming a gap between the inner peripheral wall of the cavity, buckwheat by sterilizer of buckwheat flour for pumping the outlet buckwheat flour at a high temperature by the spiral movement of the gap by rotating the screw blade in the same direction
For sterilizing the flour and transporting the buckwheat flour to the packaging process
This is a buckwheat flour sterilization transport device that transports pneumatically by suction.
And the outlet of the sterilizing apparatus for discharging sterilized buckwheat flour
And the water that evaporates from the buckwheat flour and is released with the buckwheat flour
While being pneumatically transported, a conduit is again adsorbed to the buckwheat flour.
It is a concatenation .

[0008] The present invention also provides a plurality of cylinders substantially at the center.
In the buckwheat flour sterilizing and transporting device having a hollow shape, the transport path is a hollow shape having a glasses-shaped cross section.

Further, the present invention provides any of the above buckwheat flours.
In the germicidal transportation device, the buckwheat flour sterilization device
To maintain the temperature of the buckwheat flour to be kept at 150 to 200 ° C
Means are provided and the groove is formed in the axial direction
The notched screw blade is located in the middle of the exit side of the conveyance path.
It is inserted into the rotating shaft so as to perform.

The structure of the present invention will be described in detail as follows. The cylindrical body has one cylindrical cavity inside it, one with two cylindrical cavities with a spectacle-shaped cross section, and three ring-shaped cavities with three cylindrical cavities with overlapping sections The one having one or two or more cylindrical cavities may form one transport path. Further, the outer shape of the cylindrical body is limited to a cylindrical shape because a heating member such as a heater for raising the temperature of the conveying path is disposed inside the cylindrical body and there is enough room to cover the periphery with a heat insulating material. Instead, a cylindrical body having an arbitrary shape such as a prismatic shape can be used.

Further, the heating means may be a heating member such as a heater for heating the cylindrical body. The heating means detects the temperature of the buckwheat flour and adjusts the heating temperature of the cylindrical body based on a preset appropriate temperature. May be configured to control a heating member, such as a heater, disposed in the device.

Further, the entire cylindrical body may be heated, or the transport path may be uniformly heated. However, by avoiding heating the cylindrical body in the vicinity of the inlet of the buckwheat flour, it is charged into the transport path. The backflow of the buckwheat flour at the input port caused by the expansion phenomenon caused by the moisture evaporation of the buckwheat flour can be prevented.

As the screw blade, one, two or three screw blades can be used. Further, the groove of the notched screw blade may be formed linearly in the axial direction of the screw blade, or may be formed stepwise.
In the case of a notched screw blade having a shape in which the buckwheat flour is advanced by the rotation of the screw wing, the buckwheat flour advancing through the valley portion of the screw blade and the buckwheat flour advancing through the groove portion collide with each other. The notched screw blade in a shape (reverse screw shape) in which the buckwheat flour is decelerated by rotating the screw blade by rotating the screw blade is reversely fed through the valley portion of the screw blade. Although the buckwheat flour advances through the groove, the buckwheat flour being fed back and the buckwheat flour advancing in the groove collide with each other, and the pressure is further increased and the speed is reduced.

In order for the buckwheat flour placed in the valley of the screw blade to be pressure-fed in the transport path, the screw blade inserted into the rotary shaft is moved from the top to the next to the bottom. It is sufficient that the pitches, which are the distances to each other, become narrower in order.
2 is a general screw blade as shown in FIG. 2 and a single-row cut in which a groove formed in the axial direction with a groove 25 shown in FIG. 2 is a notched screw having a trapezoidal cross section. Flight screw (hereafter,
Also called "KP". Using two types of screw blades, the pitch is 20 mm and the length is from the top as shown in Fig. 3.
100mm TB, pitch 12.5mm, length 50mm KP, pitch
KP of 20mm / 100mm in length, T of pitch 30mm / 50mm in length
B, two 30mm pitch and 150mm length TB, 40mm pitch
・ Two 150mm long TB and pitch 60mm ・ 300mm long
May be inserted into the rotation shaft. In this way, if the pitch is narrower at the tip, and the KP is provided at a position 150 mm from the tip of the total length of 1,200 mm, the pressure in the transport path gradually increases due to the transfer of the buckwheat flour, Some buckwheat flour advances through the groove 25 of the KP when being pumped through the valley of the KP, but collides with the buckwheat flour pumped through the valley to be stirred and decelerated.

As shown in FIG. 4, one notch screw (hereinafter, also referred to as “RKP”), which is another notched screw having a shape in which buckwheat flour passes through the valley portion and retreats so as to advance the buckwheat flour through the groove portion 26. 5), as shown in Fig. 5, a TB having a pitch of 20 mm and a length of 25 mm, an RKP having a pitch of 12.5 mm and a length of 25 mm, a KP having a pitch of 20 mm and a length of 100 mm, and a pitch of 20 mm. 100mm long TB, 30mm pitch, 50mm long TB, 30mm pitch, length
Two TBs of 150 mm, two TBs of pitch 40 mm and length 150 mm, and TBs of pitch 60 mm and length 300 mm may be inserted into the rotating shaft. By adding such a notched screw near the tip, a further braking effect is obtained and the pressure in the transport path is increased, so that an effective sterilization treatment can be performed.

The combination of screw blades only needs to be narrower in pitch as a whole, and a combination wider than the pitch of the preceding screw blade may be inserted in the middle. In such a combination, the buckwheat flour is opened and stirred in the gap formed by the valleys of the screw blades with a wide pitch. The pitch of the screw blades to be inserted at the tip may be wider than the pitch of the preceding screw blades. In this case, there is an effect of promoting the release of buckwheat flour.

The total length of the conveying path is not necessarily limited to 1,200 mm, but if the total length is 1,200 mm and the above-mentioned combination is used, the rotation speed is 290 to 300 rpm.
Pumping time of buckwheat flour is 6-10 seconds, 120-150kg / h
Can sterilize buckwheat flour.

Further, if the temperature of the buckwheat flour is set to 150 to 200 ° C., a sufficient sterilizing effect can be obtained without impairing the quality of the buckwheat flour such as taste, texture, flavor and color tone.
The sterilization effect cannot be obtained under high-speed pumping.

Further, no matter whether the buckwheat flour after the sterilization, which is discharged in the lateral direction from the outlet of the sterilizer, is guided vertically upward, vertically downward, or laterally, the conduit connected to the outlet is connected to the outlet. An outside air suction port provided with a filter for sterilization is provided near the connection portion, and the other end of the conduit is connected to a retaining cylinder that stalls the buckwheat flour that has been transported by air, and the retaining cylinder suctions air in the conduit. By providing the suction port, buckwheat flour discharged into the conduit can be pneumatically transported by suction.

[0020] In the sterilizer of put that buckwheat flour to the present invention, between the valley portions of the inner peripheral wall and screw vanes of the cylindrical cavity by the rotation of the screw blade by keeping the temperature at 150 to 200 ° C. of buckwheat flour The buckwheat flour is pumped at high speed by the spiral motion of the formed gap, and the buckwheat flour fed halfway through the outlet side is decelerated or reversed by the notched screw blades, so high-temperature heating is performed uniformly in a short time during high-speed transfer Sterilization can be performed.

Further, in the buckwheat flour sterilizing and transporting apparatus according to the present invention, the water evaporated from the buckwheat flour by high-temperature heat sterilization is released into the conduit together with the buckwheat flour, but stays near the outlet of the sterilizing apparatus. Instead, it is continuously transported in a floating state in the conduit by pneumatic transport by suction, so it is again adsorbed to buckwheat flour during this pneumatic transport, thereby keeping the active moisture content of buckwheat flour within the required range. In addition, since the buckwheat flour after the sterilization treatment is pneumatically transported in the conduit as it is, secondary contamination of the buckwheat flour can be prevented and deterioration of the quality of the buckwheat flour can be prevented.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1 Figure 6 is a side view illustrating a sterilizer for put that buckwheat flour to the present invention, the gearbox is a conveyance path and the transmission means of buckwheat flour represents its internal by longitudinal section, the driving unit is shown by the perspective . FIG. 7 is an explanatory view showing the connection state of the screw blades and the inside of the transport path in the buckwheat flour sterilization apparatus shown in FIG. 6 by a horizontal cross section. The screw blades are the same as those shown in FIG. . Also,
8 is a sectional view taken along line II of the transport path shown in FIG. 7, FIG. 9 is a block diagram showing a heating means for maintaining the temperature of buckwheat flour, FIG.
FIG. 11 is a diagram illustrating the movement of buckwheat flour in the transport path, and FIG. 11 is a diagram illustrating the movement of buckwheat flour in the gap.

As shown in FIGS. 6 and 8, the apparatus for sterilizing buckwheat flour according to the present embodiment comprises four prism-shaped cylinders 1 (1a, 1b, 1c, 1d) each having a hollow eyeglass-shaped cross section in the center. )
A buckwheat flour conveyance path 3 is formed laterally by the connection of the cylindrical cavities 2 by being connected, and a two-section forward screw (TB) and a single-section cut flight screw (TB) that fit on the rotation shaft 4 with the inner peripheral wall of the cylindrical cavity 2. KP) of two types of screw blades 5 are combined and inserted to form a screw body 6 shown in FIG. 3, and a mountain portion of adjacent screw blades 5 of the same type.
The play 5a and the valley 5b are fitted with play, and the rotary shaft 4 of the screw body 6 is inserted and positioned at the center line of the cylindrical cavity 2, respectively. This is a biaxial sterilizer having a gap 7 formed between the inner peripheral wall and the inner peripheral wall. And, in the cylindrical body 1a on the starting end side of the transport path 3,
An inlet 8 for buckwheat flour that opens into the transport path 3 is provided, and a discharge port 9 that horizontally discharges sterilized buckwheat flour is provided in the cylindrical body 1d on the end side of the transport path 3.

As shown in FIG. 7, a buckwheat flour temperature detector 10 for detecting the temperature of the buckwheat flour and a buckwheat flour for heating the buckwheat flour fed through the conveying path 3 are provided on the end side cylindrical body 1d having the discharge port 9. A cylinder temperature detector 12d for detecting the temperature of the heater 11d and the cylinder 1d
The cylinders 1c and 1b are also provided with heaters 11c and 11b and cylinder temperature detectors 12c and 12b, respectively.

The temperature of the heaters 11b, 11c, 11d is controlled by a control unit 13a built in the control unit 13, as shown in FIG.
The buckwheat flour temperature detector 10 and the cylinder temperature detectors 12b, 12c, 12d determine the appropriate heating temperature of the buckwheat flour and the heating temperature of each cylinder 1 for obtaining this temperature.
Is determined and executed by the temperature signal sent to the controller. That is, the heaters 11b, 11c, 11d, the control device 13, the buckwheat flour temperature detector 10 and the heating means for maintaining the temperature of the buckwheat flour fed by the cylindrical body temperature detectors 12b, 12c, 12d are constituted.

In the control device 13, a buckwheat flour temperature detector
10 and the temperature signals sent from the cylinder temperature detectors 12b, 12c, and 12d are input to the control unit 13a, and the heaters 11b, 11c, and 11d are supplied based on the control signals from the control unit 13a.
In addition to the function of adjusting the current flowing to the motor, it controls the driving of a screw conveyor of a motor and a feeder described later.

As shown in FIG. 6, the power source of the screw body 6 is a speed reducer via a belt 15 from a motor 14 which is a driving unit.
The power is transmitted to 16, and after being reduced by the speed reducer 16, the power is transmitted to the gear box 18 via the coupling 17, and in the gear box 18, the rotational force of the input shaft 19 is horizontally arranged by the distribution gear 20. The power is transmitted to the output shaft 21 and is transmitted from the two output shafts 21 to the rotating shaft 4 of the screw body 6 via the coupling 22.

Reference numeral 23 denotes a feeder for feeding buckwheat flour into the funnel-shaped inlet 8 using a screw conveyor, and reference numeral 24 denotes a bearing for the rotary shaft 4 of the screw body 6. Reference numeral 25 denotes a groove of the single cut flight screw (see FIG. 2).

Next, an operation and a sterilization method according to the present embodiment will be described. When the motor 14 is driven, each screw body 6 rotates in the direction of the arrow (see FIG. 8), and the gap 7 makes a spiral movement as shown in FIG. Subsequently, when untreated buckwheat flour is fed from the feeder 23 into the charging port 8 by the screw conveyor, the buckwheat flour falls into the transport path 3 and is placed in the gap 7 that is making a spiral movement. Since no heater is arranged in the cylindrical body 1a having the charging port 8, the buckwheat flour is sent without backflow.

Since the screw blades 5 of the screw body 6 have a narrower pitch at the tip, the buckwheat flour is heated and transferred at a high speed while applying pressure by the spiral movement of the gap 7, but the buckwheat flour itself. Also, frictional heat is generated by pressure feeding, and the cylindrical body 1 heated by the heaters 11b, 11c, 11d
The inner peripheral wall of the screw body 5 and the surface of the screw blade 5 come into contact with each other. Further, when moving from the gap 7 of one screw body 6 to the gap 7 of the other screw body 6 by pressure feeding,
As shown in FIG. 11, the buckwheat flour passes through the gap formed between the crest 5a of the one screw body 6 and the crest 5a of the other screw body 6, so that the buckwheat flour contacts the heating point evenly. The buckwheat flour fed through the valley collides with the buckwheat flour advancing through the groove 25 due to the presence of the one-section cut flight screw, and is stirred and decelerated to further sterilize the buckwheat flour. Will be added.

Next, various data in this embodiment will be described. A cylindrical body 1 having a cylindrical cavity 2 having a diameter of 50 mm and a length of 300 mm
Were connected to form a conveying path 3 having a total length of 1,200 mm. The screw body 6 is a screw blade having a diameter in which a ball screw is used as the rotation shaft 4 and the ball screw is inscribed in the cylindrical cavity 2 having an inner diameter of 50 mm of the conveying path 3 without a gap, as shown in FIG. , With a pitch of 20 mm and a length of 100 mm in order from the tip
B, KP with pitch 12.5mm and length 50mm, pitch 20mm and length
100mm KP, pitch 30mm, length 50mm TB, pitch 30
2mm, 150mm long TB, pitch 40mm, length 150mm
And two TBs having a pitch of 60 mm and a length of 300 mm were inserted. The heaters 11b, 11c, and 11d used 4.0 kW electric heaters. Buckwheat flour temperature detector 10 and cylinder temperature detector 12
b, 12c, 12d are REX-F4WNC-VV thermometers manufactured by Rika Kogyo
(Range: 0 to 400 ° C) and REX-AF4SC-MA8 (Range:
0-400 ° C). The control unit 13a of the control device 13 used a programmable controller SYSMACC manufactured by OMRON Corporation.

The suitable heating temperature of the buckwheat flour was 180-190 ° C., and the heating temperature of the cylinders 1b, 1c, 1d was 250 ° C., 250 ° C. and 270 ° C. in order to maintain this temperature. The rotation speed of the screw body 6 was 280-300 rpm, the transfer time was 6 sec, and the throughput of buckwheat flour was 150 kg / h.

Under the above conditions, the number of bacteria is 620,
When buckwheat flour containing 000 flour / g and the number of coliforms is 9,300 flour / g and has an inner layer powder as a main component, the number of general viable bacteria is 1,600 / g and the number of coliforms is 0 / g. did it.

Embodiment 2 In the present embodiment, the screw body 6 in the first embodiment is added with a single reverse cut screw (RKP) shown in FIG. 4 and an oval-shaped kneading disk (hereinafter also referred to as “N”) shown in FIG. As shown in FIG. 13, two pieces of N having a width of 12.5 mm are arranged in order from the front end, and an R having a pitch of 12.5 mm and a length of 25 mm is used.
KP, pitch 20mm, length 100mm KP, pitch 20mm, length 100mm TB, pitch 30mm, length 50mm TB, pitch
Two 30mm / 150mm long TBs, pitch 40mm / 150m long
m, and two TBs each having a pitch of 60 mm and a length of 300 mm were inserted into a ball screw.

As described above, the reverse cut screw (RK) having a screw shape that spirally moves in the direction of pushing back the buckwheat flour in the gap 7 backward near the tip of the screw body 6.
By inserting P), a further braking effect is obtained and the pressure in the transport path is increased, so that an effective sterilization treatment can be performed. The buckwheat flour pressurized by the reverse cut screw is transferred forward through the groove 26.

Since the oval kneading disk (N) is provided at the tip of the screw body 6, there is an effect of crushing granular buckwheat flour between the kneading disk and the inner peripheral wall of the transport path 3.

The screw body 6 was used to sterilize buckwheat flour composed of an inner layer powder, a middle layer powder and a surface layer powder, the number of which is 3,500,000 cells / g and the number of coliform cells is 24,000 cells / g. However, the number of general viable bacteria 6,000 / g, the number of coliforms
Sterilization was possible up to 23 pieces / g. At this time, the processing amount of the buckwheat flour was 130 kg / h, the passage time in the transport path was 10 seconds, the temperature of the buckwheat flour was 190 ° C., and the heating temperature of the cylinders 1b, 1c, 1d was 250 to maintain this temperature. ℃, 250 ℃ and 270 ℃.

The temperature of the buckwheat flour consisting of only the inner layer flour, which is considered to have a low number of bacteria, is set to 150 ° C., and the heating temperature of the cylinders 1b, 1c, 1d is set to 200 ° C. 200
℃ and 250 ℃, the throughput was 150 kg / h, and the passage time of the conveyance path was 6 seconds.
, The number of coliforms 24,000 / g, the number of general viable bacteria 610 / g,
The number of coliform bacteria was 0 / g.

Embodiment 3 FIG. 14 is an explanatory view schematically showing a buckwheat flour disinfection and transport apparatus according to the present invention, and shows the interior of a stagnant cylinder for stalling buckwheat flour sent by pneumatic transportation by a partial cross section.

In FIG. 14, reference numeral 27 denotes a buckwheat flour sterilization apparatus according to the first embodiment, which is connected to the discharge port 9 of the buckwheat flour sterilization apparatus 9 and has a horizontal bottom surface and is bent vertically downward with no slope. A discharge connecting pipe having a shape 28 is connected to the connecting pipe 27 for discharging, and the connecting pipe for discharging buckwheat flour discharged from the outlet 9.
The first conduit that runs vertically downward from 27, 29 is a sanitizing air filter (TOKYO EI) that takes in outside air for air transportation
KOH FILTER CO.LTD: Model ECHOLTER RX-3: Capacity 20m
³ / min), 30 is a position which is connected to the first conduit 28 in an inverted T-shape from the side so as to block the path of the first conduit 28 and passes a junction with the first conduit 28. Is a second conduit that is raised upward from the side and bent at the tip thereof in the lateral direction, and the buckwheat flour falling while flying in the first conduit 28 is sucked from the air filter 29 from the lateral air. And pneumatically transport it upwards. Reference numeral 31 denotes a retention cylinder connected to the tip of the second conduit 30 for stalling the buckwheat flour, and reference numeral 32 denotes a suction port connected to the retention cylinder 31 with the suction port positioned above the buckwheat flour introduction port of the retention cylinder 31. Blower (manufactured by Hitachi, Ltd .: Vortex blower: Model VE-030-E).

Reference numeral 33 denotes a discharge rotary valve (sanitary rotary valve: manufactured by Kikkoman Corporation) which shuts off the flow of air in the storage cylinder 31 connected to a lower portion of the storage cylinder 31. Reference numeral 34 denotes a discharge rotary valve. This is a foreign matter separator in which a stainless steel punching net is stretched around the connected inner wall, and buckwheat flour falling through the discharge rotary valve 33 is passed through the wire mesh by centrifugal force, and those that do not pass through the wire mesh are removed as foreign matter. It has the function of removing. Reference numeral 35 denotes an indwelling tank for buckwheat flour connected to the foreign matter separator 34, and reference numeral 36 denotes an automatic fixed amount bagging machine (manufactured by Nakajima Seisakusho Co., Ltd.).

In the buckwheat flour sterilizing and transporting apparatus having the above configuration, the discharge connecting pipe 27 having no horizontal bottom surface is connected to the discharge port 9 of the buckwheat flour sterilizing apparatus shown in the first embodiment. The buckwheat flour discharged from the discharge port 9 falls through the first conduit 28 to the second conduit 30 without adhering to the bottom surface of the discharge connecting pipe 27. The buckwheat flour discharged into the discharge connecting pipe 27
Due to the high temperature of 150 to 200 ° C., the temperature inside the first conduit 28 is also high. In addition, the moisture released together with the buckwheat flour by the pneumatic transportation by suction passes through the first conduit 28 The buckwheat noodles are fed into the second conduit 30, and are adsorbed to the buckwheat noodles again as the noodles gradually cool down while being sent in a floating state together with the noodles.

As described above, the buckwheat flour rides the air flow from the first conduit 28 in the direction of the arrow A in the second conduit 30 while taking in the water suspended in the surroundings. The active water content of the buckwheat flour that has been transported and reached the retention cylinder 31 is the active water content before sterilization (usually 10 to 13).
%).

In the present embodiment, since buckwheat flour is pneumatically transported by suction, there is no need to provide a rotary valve for preventing backflow of air between the outlet 9 of the sterilizing apparatus and the conduit. The air does not stay inside, and buckwheat flour is less likely to adhere to the inner wall of the conduit.

In this embodiment, the first conduit is 530 mm and the second conduit is 4,600 mm by using two conduits, and the active water content can be maintained at about 90%. ,
Depending on the direction in which the buckwheat flour is transported, only one conduit may be used to adsorb the moisture evaporated from the buckwheat flour and released together with the buckwheat flour to the buckwheat flour again while being transported by air. About 4 m is enough.

Further, since the foreign matter separator 34 for removing foreign matter mixed in the buckwheat flour is provided in front of the automatic quantitative bagging machine 36, more refined buckwheat flour can be obtained.

It should be noted that instead of the foreign matter separator of the present embodiment, a foreign matter separator is used in which buckwheat flour is dropped on a magnetic disk and the buckwheat flour is passed through a wire mesh by centrifugal force caused by rotation of the disk. , Can separate metal powder.

Further, as another modified example, when a suction port provided with a small air filter for sterilization is provided in the discharge connecting pipe 27, the buckwheat flour in the discharge connecting pipe 27 can be sent into the conduit without stagnation. Can be. By winding the outside of the conduit with a hot wire coil and heating the conduit to 150 to 200 ° C., it is possible to prevent dew condensation on the inner wall of the conduit at a time when the outside air temperature is low such as in winter. Instead of winding the outside of the conduit with a hot wire coil, the conduit itself may be a heating element.

[0050]

As described above, according to the present invention, the temperature of the buckwheat flour is maintained at 150 to 200 ° C. and the gap formed between the inner peripheral wall of the cylindrical cavity and the valley of the screw blade is formed. Spiral buckwheat flour is pumped at high speed, and reverse feeding or deceleration is performed near the end, so high-temperature heat sterilization can be carried out evenly during high-speed transport in a short period of time, preventing deterioration of buckwheat flour quality due to burning. can do.

Further, according to the present invention, the buckwheat flour after the high-temperature heat sterilization treatment is continuously transported in the conduit by pneumatic transport by suction as it is, so that the water released into the conduit together with the buckwheat flour is again consumed. Therefore, the active moisture content of the buckwheat flour can be maintained within a required range, and deterioration of the quality of the buckwheat flour can be prevented.

Since the buckwheat flour after the sterilization treatment is transported as it is in the conduit, secondary contamination of the buckwheat flour can be prevented.

Further, since the pneumatic transportation by suction is performed, the buckwheat flour is less likely to adhere to the inner wall of the conduit, and the floating water can be prevented from being condensed on the inner wall of the conduit. Therefore, it can be said that the industrial applicability of the present invention is very high.

[Brief description of the drawings]

FIG. 1 is a perspective view of a two-way forward screw.

FIG. 2 is a perspective view of a single cut flight screw.

FIG. 3 is a diagram illustrating a combination of screw blades of a screw body.

FIG. 4 is a perspective view of a single reverse cut screw.

FIG. 5 is a diagram illustrating a combination of screw blades of a screw body.

6 is a side view illustrating a sterilizer for put that buckwheat flour to the present invention.

FIG. 7 is an explanatory diagram showing a horizontal cross section of a connected state of screw blades and an inside of a conveying path in the buckwheat flour sterilizing apparatus shown in FIG.

FIG. 8 is a sectional view taken along line II of the transport path shown in FIG. 7;

FIG. 9 is a block diagram showing a heating means for maintaining the temperature of buckwheat flour.

FIG. 10 is a diagram for explaining the movement of buckwheat flour in the transport path.

FIG. 11 is a diagram illustrating the movement of buckwheat flour in a gap.

FIG. 12 is a plan view and a side view of the kneading disk.

FIG. 13 is a diagram illustrating a combination of screw blades of a screw body.

FIG. 14 is an explanatory view schematically showing a buckwheat flour disinfection and transport apparatus according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cylindrical body 2 Cylindrical cavity 3 Conveying path 4 Rotating shaft 5 Screw blade 6 Screw body 7 Gap 8 Inlet 9 Outlet 10 Buckwheat flour temperature detector 11b, 11c, 11d Heater 12b, 12c, 12d Cylindrical body temperature detector 13 Control device 13a Control part 14 Motor 15 Belt 16 Reduction gear 17,22 Coupling 18 Gear box 19 Input shaft 20 Distribution gear 21 Output shaft 23 Feeder 24 Bearing 25 Single cut flight screw groove 26 Single reverse cut screw groove 27 Ejection Connecting pipe 28 First conduit 29 Air filter 30 Second conduit 31 Retaining cylinder 32 Suction blower 33 Discharge rotary valve 34 Foreign matter separator 35 Detention tank 36 Automatic fixed quantity bagging machine TB Nijo Fore Screw KP Chiyo Cut Flight Liu RKP Article reverse cut screw N kneading disk

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A23L 1/10 A23L 1/16 A23P 1/12 B65G 33/18

Claims (4)

(57) [Claims] 1. A cylindrical body having a cylindrical cavity at substantially the center is disposed with the cylindrical cavity oriented sideways, and at least two types of screw blades having a plurality of stages fitted to an inner peripheral wall of the cylindrical cavity are provided on a rotating shaft. The rotation axis is positioned at the center line of the cylindrical cavity and inserted to form a gap between the valley of the screw blade and the inner peripheral wall of the cylindrical cavity. buckwheat the sterilizer of buckwheat flour for pumping the outlet buckwheat flour at a high temperature by the spiral movement
To sterilize and transport the buckwheat flour to the packaging process
This is a buckwheat flour sterilization transport device that pneumatically transports by suction.
And the outlet of the sterilizer for discharging the sterilized buckwheat flour
And the water that evaporates from the buckwheat flour and is released with the buckwheat flour
While being pneumatically transported, a conduit is again adsorbed to the buckwheat flour.
A buckwheat flour sterilization transport device, which is connected. 2. A cylindrical body having a plurality of cylindrical cavities substantially at the center thereof, wherein the cylindrical cavities are turned sideways so as to open the overlap of opposed longitudinal inner peripheral walls of adjacent cylindrical cavities. Form one conveying path consisting of a cavity, combine and insert at least two types of screw blades consisting of a plurality of stages that fit on the inner peripheral wall of the cylindrical cavity on the rotating shaft, and insert them respectively, and the peaks of adjacent screw blades of the same type And a valley are provided with play, and each rotating shaft is positioned at the center line of the cylindrical cavity and inserted to form a gap between the valley of the screw blade and the inner peripheral wall of the cylindrical cavity. The buckwheat flour is sterilized by a buckwheat flour sterilizer that pumps the buckwheat flour to the outlet at a high temperature by the spiral movement of the gap by rotating the screw blades in the same direction, and the buckwheat flour is used in the packaging process.
Sterilization of buckwheat flour pneumatically transported by suction for transport
A sterilizing device for discharging sterilized buckwheat flour.
Evaporates from the buckwheat flour and discharges it with the buckwheat flour
Is absorbed by the buckwheat flour again while being transported by air.
Sterilization transport of buckwheat flour, characterized by connecting conduits
apparatus. 3. The apparatus for sterilizing and transporting buckwheat flour according to claim 2, wherein the conveying path is a cavity having an eyeglass-shaped cross section. 4. The buckwheat flour sterilizing device is provided with
A heating means for maintaining the temperature of the powder at 150 to 200 ° C is provided.
Notched disk with a groove formed in the axial direction
Turn so that the Ryu blades are located halfway on the exit side of the conveyance path.
4. The buckwheat flour sterilizing and transporting device according to claim 1, which is inserted into the spindle .