WO2008004313A1 - Appareil pour le traitement thermique de substance pulvérulente/granulaire - Google Patents

Appareil pour le traitement thermique de substance pulvérulente/granulaire Download PDF

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Publication number
WO2008004313A1
WO2008004313A1 PCT/JP2006/313814 JP2006313814W WO2008004313A1 WO 2008004313 A1 WO2008004313 A1 WO 2008004313A1 JP 2006313814 W JP2006313814 W JP 2006313814W WO 2008004313 A1 WO2008004313 A1 WO 2008004313A1
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WO
WIPO (PCT)
Prior art keywords
raw material
heat treatment
treatment apparatus
barrel
outlet nozzle
Prior art date
Application number
PCT/JP2006/313814
Other languages
English (en)
Japanese (ja)
Inventor
Kouji Oogaki
Kazumoto Iinuma
Yutaka Kawachi
Original Assignee
Ricetech Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricetech Corporation filed Critical Ricetech Corporation
Priority to PCT/JP2006/313814 priority Critical patent/WO2008004313A1/fr
Publication of WO2008004313A1 publication Critical patent/WO2008004313A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23N—MACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS
    • A23N17/00—Apparatus specially adapted for preparing animal feeding-stuffs
    • A23N17/005—Apparatus specially adapted for preparing animal feeding-stuffs for shaping by moulding, extrusion, pressing, e.g. pellet-mills
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23P—SHAPING OR WORKING OF FOODSTUFFS, NOT FULLY COVERED BY A SINGLE OTHER SUBCLASS
    • A23P30/00—Shaping or working of foodstuffs characterised by the process or apparatus
    • A23P30/20—Extruding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/72—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices
    • B01F27/724—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices with a single helix closely surrounded by a casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04—Particle-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92209—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/92409—Die; Nozzle zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92514—Pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92561—Time, e.g. start, termination, duration or interruption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/926—Flow or feed rate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92609—Dimensions
    • B29C2948/92647—Thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92809—Particular value claimed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92904—Die; Nozzle zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92952—Drive section, e.g. gearbox, motor or drive fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/9298—Start-up, shut-down or parameter setting phase; Emergency shut-down; Material change; Test or laboratory equipment or studies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/268—Throttling of the flow, e.g. for cooperating with plasticising elements or for degassing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/56—Screws having grooves or cavities other than the thread or the channel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/68—Barrels or cylinders
    • B29C48/685—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
    • B29C48/686—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having grooves or cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/69—Filters or screens for the moulding material
    • B29C48/693—Substantially flat filters mounted at the end of an extruder screw perpendicular to the feed axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/69—Filters or screens for the moulding material
    • B29C48/694—Cylindrical or conical filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0059—Degradable
    • B29K2995/006—Bio-degradable, e.g. bioabsorbable, bioresorbable or bioerodible

Definitions

  • TECHNICAL FIELD The present invention relates to a heat treatment apparatus for heating powder or granular grain raw material for a short time.
  • powdery or granular substances such as rice bran and soybeans are heated for a short time, for example, uniformly and accurately for 9 seconds at 1550 degrees Celsius (hereinafter abbreviated as 1550 degrees Celsius).
  • 1550 degrees Celsius 1550 degrees Celsius
  • Patent Document 1 shows an example of heating at 85 degrees Fahrenheit (30 degrees Celsius) for 20 minutes. Electromagnetic and infrared heating methods are suitable for this purpose but have poor energy efficiency and uniformity.
  • the extruder (ex tr ude er) is suitable as a heating device because the raw material itself generates heat due to friction and shear during the raw material extrusion process.
  • FIG. 1 of Patent Document 2 and FIG. 3 of Patent Document 3 show examples.
  • friction and shear were concentrated on the cylinder tube surface of the extruder, resulting in uneven temperature in the raw material, and the intended heat treatment could not be performed uniformly.
  • Patent Literature 1 Japanese Patent Application No. 6-5 1 3 2 0 1 (1 page 4 example 1)
  • Patent Document 2 U.S. Patents U.S.4, 7 4 1, 2 6 4 (Fig. 1)
  • Patent Document 3 Patent Publication No. 2 9 5 6 6 2 2 ( Figure 3 on page 3)
  • Ultra high temperature (UHT) powder sterilizers for this purpose use superheated steam, but not only the equipment and operating costs are high, but also yield loss, Processing costs will be several hundred yen.
  • the raw material cost of rice bran is several to tens of yen per kilogram, so the sterilization cost is about 10 times more than that of the raw material.
  • the present invention is to provide a UHT sterilizer by short-time heating that is realized at a cost equivalent to the raw material cost compared to per kg.
  • the extruder can use the heat generated by the friction and shearing of the raw material itself in the process of extruding the raw material, so that the structure is simple, energy efficient, and suitable as a low-cost heating device. .
  • the product temperature rises due to friction and shear heat at the part in contact with the cylinder surface, but heat is generated at other parts. If the thermal conductivity of the raw material is poor, there will be significant unevenness in the product temperature. For this reason, heat treatment becomes non-uniform and lipase inactivation and sterilization become insufficient.
  • Rice bran has a very poor thermal conductivity, so according to experiments, the product temperature is as high as 50 ° C to 80 ° C.
  • the raw material in the barrel is near the center of the passage and a very narrow passage. By trying to be sheared at a low temperature, it is intended to provide a heat treatment apparatus that eliminates uneven product temperature and is low in cost and energy efficient.
  • a powder or granular raw material extruder is constituted by a barrel that pressurizes and shears a raw material, and an outlet nozzle that controls flow rate and pressure, and a blade is provided on each of the barrel screw outer surface and the cylinder inner surface.
  • the heat treatment apparatus is characterized in that the extruded material is sheared between these blades.
  • the following actions can be obtained.
  • the raw material is rice bran
  • the rice bran to be injected is extruded in the direction of the outlet by the screw blades between the screw and the cylinder. Sheared. If the passage gap is 5 mm and the height of both blades is 2.4 mm respectively, the rice bran will be sheared at the center of the passage instead of the pipe surface. The heat generated here spreads in all directions from the center, so product temperature unevenness is reduced. Furthermore, if the gap between the outlet nozzles is narrowed to 1 mm or less and the rice bran is sheared again, the product temperature will be further reduced.
  • the height of the blade is increased to the full barrel gap near the entrance of the raw material to secure the extrusion force, and it is changed from about 1/2 or 1/3 to about 2/3 toward the exit. If the raw material is configured to be sheared at different positions in the passage, the raw material is agitated during the extrusion process, and the uniformity of the product temperature is further increased.
  • the target heat treatment can be realized at low cost without losing energy efficiency even if the temperature or humidity of the raw material to be injected changes. Can have an effect.
  • FIG. 1 shows the entire mechanism of an extruder as the best mode for carrying out the present invention.
  • the raw material is rice bran
  • the present invention is not limited to this, and the present invention is not limited to rice, wheat, beans, buckwheat, corn, and powders thereof, bran (rice cake), embryos, etc. Applicable. It can also be applied to tea leaves, spices, vegetables, fruits, mushrooms, mushroom culture media, plants, meat, seafood, pet food, and feeds that have been processed into powder or granules other than grains.
  • the purpose of heat treatment of rice bran is to inactivate endogenous lipase and sterilize microorganisms contained in rice bran.
  • FIG. 1 is an overall view of the stabilizer.
  • Rice bran is poured into hopper 3 and through feeder 1 into the extruder barrel.
  • the main part of the extruder consists of a barrel part, an outlet nozzle part and a main motor 1.
  • the barrel part is composed of a cylinder 15 and a squeegee 16 with blades, and the gap between the two becomes the raw material passage 5, and the rice bran is heated by extrusion pressure, friction and shear.
  • the outlet nozzle part is composed of an inner ring 9 and an outer ring 10, and the gap between the two is made narrower than the barrel gap, thereby acting as a valve that regulates the flow rate, and pressure is applied to the raw material passing through the barrel. generate.
  • the screw 16 and the inner ring 9 at the outlet are mechanically coupled, and are driven by the main motor 1 to rotate.
  • the raw rice bran passes through a passage formed by a gap between the cylinder 15 and the screw 16 and is pushed toward the outlet by a screw blade 17.
  • the height of the blade on the inlet side from the screw blade 17 is almost equal to the gap between the passages to ensure a sufficient pushing force.
  • the blade height is lowered, and at the same time, the cylinder blade 18 shown in broken lines is attached to the inner surface of the cylinder.
  • H H 1-2-+ ⁇ 2 + ⁇ .
  • ⁇ is a clearance for preventing the upper and lower blades from coming into contact with each other, and is usually 0.1 to 0.3 mm.
  • the angle of the cylinder blade and the screw blade intersect each other, and the angle (or pitch) of the cylinder blade is slightly smaller than the angle (or pitch) of the screw blade.
  • the angle of both is the same for simplicity.
  • the amount of heat generated in the barrel at this time is the power of the main motor 1, the structure of the cylinder and screw, shape, material and physical properties of rice bran (Poisson's ratio, specific heat, density, shear coefficient, coefficient of friction with steel, heat (Conductivity, moisture content).
  • heat is generated at the outlet nozzle, and the amount of heat generated varies greatly depending on the structure and shape of the outlet nozzle. Also, since the barrel and outlet nozzle are connected, the internal heat generation varies depending on the combination of these structures and shapes.
  • the shape of the outlet nozzle is a conical shape whose diameter decreases toward the outlet side, that is, a die shape.
  • the feature of this structure is that the exit nozzle gap between the exit nozzle and the inner ring 9 can be easily changed by sliding the exit nozzle outer ring 10.
  • the outlet nozzle outer ring is fixed by screwing into the cylinder inner surface and can be slid by turning the outer ring. If the outer ring is slid in the outlet direction, the exit nozzle gap can be increased as much as possible.
  • the outer ring can be slid while the inner ring is rotating, that is, during operation.
  • the shape of the outlet nozzle can be a conical shape whose diameter increases toward the outlet side, that is, a cone type.
  • the feature of this structure is that the raw material is easy to come out toward the outlet, and the risk of clogging inside the barrel can be reduced.
  • the shape of the outlet nozzle can be cylindrical instead of conical. In this case, the exit nozzle gap is determined at the time of processing, so parts must be replaced to adjust the gap.
  • the physical dimensions of the output nozzle gap are design matters, and the power varies depending on the power of the main motor, the number of revolutions, and the structure and dimensions of the barrel; Can be made.
  • Figure 2 shows the relationship between the barrel and the outlet nozzle.
  • the outlet nozzle is an important part that plays a role in regulating the flow rate and pressure of the raw material.
  • the flow rate and pressure adjustment pass through the nozzle gap.
  • the V-shaped groove 27 shown in Fig. 2 shows an example.
  • the angle and direction of the V-groove is approximately the same spiral as the cylinder blades for the outer ring, and approximately the same spiral as the screw blades for the inner ring.
  • the passing material can be sheared, and the depth of the V groove should be about 1/2 to 1/3 of the nozzle gap.
  • a protrusion may be provided instead of the V-groove.
  • the groove or protrusion added to the outlet nozzle gap in addition to the spiral shape, the groove can be provided in the axial direction and in the circumferential direction. For the rotating inner ring, it is effective to provide a groove in the axial direction in order to suppress the circumferential rotation.
  • the number, depth, height, and spacing of grooves and protrusions are design matters, but the height of the protrusions is 1/2 of the nozzle gap, the number of grooves is 90 degrees, 4 grooves, and circumferential grooves.
  • the guideline is about 5 mm at regular intervals in the axial direction of the outlet slack.
  • the height of the cylinder blade ⁇ 2 is processed so that it becomes ⁇ 2 — ⁇ 1— ”respectively. It is a design matter to determine the size of such a structure. However, for example, it is possible to arrange 2 pitch blades each to make a total pitch of 10. By this method, the position where the raw material is sheared is measured from the inner surface of the cylinder, and 0 in the traveling direction. Since ⁇ / 3, ⁇ / 2, 2 ⁇ / 3, and 2/2 change, the internal heat generation position changes accordingly, and the product temperature becomes more uniform.
  • FIG. 3 is an explanatory view showing the embodiment.
  • the raw material is pushed in the direction of the arrow between the outer ring and the inner ring of the outlet nozzle.
  • a mesh or filter 22 By placing a mesh or filter 22 on the outlet side of the outlet nozzle outer ring, resistance can be given to the flow of the raw material.
  • the resistance of the mesh can be adjusted by combining multiple meshes with different mesh fineness (mesh number).
  • various filters can be used alone or in combination.
  • reference numeral 21 denotes a perforated plate, which is used for the purpose of reinforcing the mechanical strength of the mesh.
  • FIG. 4 is an explanatory view showing another embodiment in which the outlet nozzle is given resistance to the flow of the raw material.
  • Outlet nozzle By arranging the parallel plate panel 23 on the outlet side of the inner ring, resistance can be given to the flow of the raw material. The resistance can be adjusted by combining various thicknesses, materials, and structures of the panel panel.
  • reference numeral 24 denotes a resistance plate, which is used as a lid for the outlet gap. The material is selected in consideration of wear.
  • FIG. 5 is an explanatory view showing another embodiment in which the outlet nozzle is given resistance to the flow of the raw material.
  • the resistance can be adjusted by various combinations of hole size, position, and number.
  • Example 6 Since the extruded discharge is heated and subjected to pressure, it deforms according to the structure and shape of the outlet nozzle.
  • the particle size corresponds to the mesh size
  • in the case of Example 4 it is a thin flake shape
  • these effluents contain water vapor at high temperatures and often require cooling and drying. It is effective to introduce a crushing mechanism as a method of returning the deformed discharge shape to the original granular form and accelerating cooling and drying.
  • FIG. 6 is an explanatory view showing the embodiment.
  • a rotating body arranged substantially in parallel with an appropriate gap is connected to the outside of the porous conical cap of Example 5, and the discharged matter is crushed using the gap and the rotating body.
  • rotation is economically realized because the main motor that drives the screw and the inner ring of the outlet nozzle is used as the power source.
  • the crushing effect can be enhanced by making a plurality of holes in the rotating body or by cutting out a part of it.
  • the discharged product can be passed through a vibrating screen. Vibrating sieves forcibly vibrate the raw material to increase contact with air and break the bond between the raw materials due to collisions between the raw materials and foreign materials. Furthermore, if forced air cooling is performed by blowing air, water vapor is scattered and cooling and drying effects can be enhanced.
  • Fig. 7 shows a control block diagram for automatically controlling the temperature of the discharged material to the target value.
  • the feature of this example is that the temperature sensors indicated by reference numerals 1 2 and 14 in FIGS. 1 and 7 are attached to the extruder, and the sensor information is input to the controller 1 3, and the controller 1 3
  • the target temperature control program is operated, and the processing temperature is controlled to the target value by controlling the extruder through various motors whose outputs are denoted by reference numerals 1, 6, and 10.
  • the inputs of the controller 13 are a temperature sensor 14 near the outlet of the extruder and a temperature sensor 12 at the discharge section.
  • the temperature sensor 14 near the outlet has a steep temperature gradient in this part and is particularly important for control characteristics, so three sensors are mounted side by side in the outlet direction.
  • the output of the controller 13 is controlled by the main motor 1 (Motor A), the number of revolutions of the extruder, the feeder drive motor 6 (Motor B), and the flow rate control motor 8 (Motor C). ) Used to control the amount of processed material discharged.
  • the procedure for realizing the target heat treatment from the mechanism shown in Fig. 1 and the controller shown in Fig. 7 is as follows. First, the condition parameters for heat treatment are determined from preliminary experiments. In other words, the target temperature condition is mainly determined by the main motor speed and the gap between the outlet nozzles.
  • the flow control position is manually changed while rice bran is continuously supplied to the extruder, and the slider position in this case is Measure the values of temperature sensors 1 4 and 1 2 to determine the combination of parameters that achieves a state close to the target.
  • the relationship between these input / output parameters is written to the controller 13 as a target reference value setting program.
  • the difference delta 1 between these input target reference values and the actual sensor value is calculated, and the controller 13 heat processing program is created so that delta 1 becomes zero.
  • the heat treatment program calculates the correction value beta 1 for the output target reference value of the motor A rotation speed control value and the motor C flow rate control value for the input system deviation delta 1, and the rotation speed control And flow control.
  • Fig. 1 also shows a mechanism that prevents the rice bran from being caught in the hopper 3 by effectively using the heat of the discharged raw material.
  • Bridge is a phenomenon in which raw materials are connected together to form a bridge and create a cavity in the hopper. This is a physical phenomenon that often occurs when powder or granular materials are injected. When bridging occurs, the raw material is disturbed by the bridge and cannot be successfully injected into the extruder. In FIG. 1, the heat flow is piped from the exhaust inlet 11, and blown from the bridge prevention jet nozzle 4 attached to the hopper 3 through the pump P toward the raw material.
  • the rice bran has a moisture content of 10 to 13%, and a significant proportion of the drive energy is used for water evaporation.
  • This feedback mechanism contributes greatly to improving energy efficiency.
  • heat can be recirculated using a heat pipe instead of the intake port.
  • the heat processing apparatus of this invention is not limited only to the above-mentioned illustration example, Of course, in the range which does not deviate from the summary of this invention, a various change can be added.
  • FIG. 1 is the overall mechanism of the heat treatment equipment
  • FIG. 3 is an explanatory diagram of an embodiment of the output nozzle
  • FIG. 4 is an explanatory diagram of another embodiment of the outlet nozzle
  • FIG. 5 is an explanatory diagram of another embodiment of the outlet nozzle
  • FIG. 7 is a control block diagram of the heat treatment apparatus
  • 1 3 is the controller
  • 1 4 is the outlet temperature sensor
  • 1 7 is the entrance piece j One screw

Abstract

L'invention concerne un appareil de traitement thermique bon marché avec lequel une substance pulvérulente ou granulaire, qui est une matière première devant être traitée, est chauffée de façon précise en un court laps de temps. L'appareil de traitement thermique comprend une extrudeuse pour une matière pulvérulente ou granulaire qui comprend un cylindre pour presser/cisailler la matière et une buse de sortie pour réguler le débit et la pression. Le cylindre a une structure dans laquelle la surface externe de la vis et la surface interne du cylindre ont chacune une lame attachée à celle-ci de telle sorte que la matière qui est extrudée est cisaillée entre ces lames. Il est ainsi proposé un appareil de traitement thermique qui atteint un rendement énergétique élevé et est bon marché.
PCT/JP2006/313814 2006-07-05 2006-07-05 Appareil pour le traitement thermique de substance pulvérulente/granulaire WO2008004313A1 (fr)

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Publication number Priority date Publication date Assignee Title
JP2014176837A (ja) * 2013-03-14 2014-09-25 Cavitatorsystems Gmbh Mediale Mischsysteme & Anlagen 衛生的に製造するべき流体混合物用のキャビテーションミキサの流量適合方法
WO2015007906A1 (fr) * 2013-07-18 2015-01-22 Compagnie Generale Des Etablissements Michelin Dispositif d'extrusion de mélanges d'élastomères
CN107362739A (zh) * 2017-06-29 2017-11-21 台山市兰宝磨具有限公司 一种磨具生产用加料装置
CN108722289A (zh) * 2018-06-11 2018-11-02 贺逢宝 一种用于牧业饲料的搅拌装置
CN108851158A (zh) * 2018-08-06 2018-11-23 安徽省富邦天成食品有限公司 一种米线挤出成型设备
CN109820217A (zh) * 2019-03-13 2019-05-31 江苏丰尚智能科技有限公司 一种膨化机颗粒切割装置
CN110667066A (zh) * 2019-09-19 2020-01-10 南安市信隆智能家居有限公司 一种基于数据归类和物料分隔的色母粒加工的熔融挤出机
CN111869909A (zh) * 2020-08-03 2020-11-03 倪为勇 一种丸类食品加工设备
CN116423791A (zh) * 2023-06-13 2023-07-14 南昌大学 一种亲水抑菌性医用微管的气液辅助成型装置及方法

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JPS5668400A (en) * 1979-11-06 1981-06-09 Wenger Mfg Method and apparatus for extruding high moisture substance of whole or crushed grains
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JP2014176837A (ja) * 2013-03-14 2014-09-25 Cavitatorsystems Gmbh Mediale Mischsysteme & Anlagen 衛生的に製造するべき流体混合物用のキャビテーションミキサの流量適合方法
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WO2015007906A1 (fr) * 2013-07-18 2015-01-22 Compagnie Generale Des Etablissements Michelin Dispositif d'extrusion de mélanges d'élastomères
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CN107362739A (zh) * 2017-06-29 2017-11-21 台山市兰宝磨具有限公司 一种磨具生产用加料装置
CN108722289A (zh) * 2018-06-11 2018-11-02 贺逢宝 一种用于牧业饲料的搅拌装置
CN108851158A (zh) * 2018-08-06 2018-11-23 安徽省富邦天成食品有限公司 一种米线挤出成型设备
CN109820217A (zh) * 2019-03-13 2019-05-31 江苏丰尚智能科技有限公司 一种膨化机颗粒切割装置
CN109820217B (zh) * 2019-03-13 2021-06-11 江苏丰尚智能科技有限公司 一种膨化机颗粒切割装置
CN110667066A (zh) * 2019-09-19 2020-01-10 南安市信隆智能家居有限公司 一种基于数据归类和物料分隔的色母粒加工的熔融挤出机
CN111869909A (zh) * 2020-08-03 2020-11-03 倪为勇 一种丸类食品加工设备
CN111869909B (zh) * 2020-08-03 2021-08-06 泰州市乐太食品有限公司 一种丸类食品加工设备
CN116423791A (zh) * 2023-06-13 2023-07-14 南昌大学 一种亲水抑菌性医用微管的气液辅助成型装置及方法
CN116423791B (zh) * 2023-06-13 2023-08-29 南昌大学 一种亲水抑菌性医用微管的气液辅助成型装置及方法

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