• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A new method is intended to the determination of characteristic values, particularly the moisture determination, of food products susceptible of being conveyed by flowing along a transportation path, particularly grain and transformation products thereof. Food products are conveyed through the electric field of a capacitor arrangement (4), (5), a magnitude affected to the capacitor arrangement is measured and is transformed into a characteristic value. A device for implementing this new method comprises a first unit for transporting the food products through a capacitor arrangement (4), (5), a second unit (7) for measuring a magnitude affectable to the capacitor arrangement and a transformer unit (8), (9) for transforming the measured magnitude into a characteristic value.
    公开号:SU1433427A3
    申请号:SU823402751
    申请日:1982-02-25
    公开日:1988-10-23
    发明作者:Этикер Ганс；Куммер Эмануэль
    申请人:Гебрюдер Бюлер Аг (Фирма)；
    IPC主号:
    专利说明:

     The invention relates to the control of the moisture content of a bulk food product, in particular, grain and its processing products5, and may find application in the milling, grain processing industry.
    The purpose of the invention is to improve accuracy by obtaining a more advanced average material sample in the measurement zone.
    Fig. 1 shows a diagram of a device for continuously determining the moisture content of bulk food products by the change in electrical capacity; per ph, 2 is the electrical measurement diagram; in fig. 3 - the position of the individual switches in accordance with the time course of Fig „2; in fig. 4 shows a scheme for creating an average composition of a material in a measuring vessel.
    When carrying out the method of continuous determination of the moisture content of a bulk food product, in particular, grain and its processing products, the bulk food flow stream is divided into measurable and bypass, they are passed under the force of gravity, respectively, through the measuring and bypass zones, followed by receiving combined stream. Further, the flow rates of the measured feed of the bulk food product are slowed down by decreasing its outlet cross section. In addition, the flow rate of the bypass flow of the bulk food product is controlled by changing the flow cross section of the bulk flowable food combined behind the measured and bypass zones by providing a constant level of bulk food in the bypass zone. The change in the value of the electrical capacitance of the measured flow is measured, the measured value is averaged with the subsequent determination of the free-flowing food by the average value of the moisture content.
    A device for continuously detecting the moisture content of a granular food product contains a through passage measuring cell 1 located in the flow path of a loose food product under a silo 2 o Outlet 3 passing through a measuring cell less than its inlet 4. In this case, the passing measuring cell is made in the form of a condenser, wall 5
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    The cells are the first capacitor plate, and the second capacitor plate 6 is placed inside. The measuring cell is connected to the capacitor capacitance measuring transducer 7 caused by a change in the moisture content of the bulk food stream connected to the electronic signal processing unit 8 to which the temperature sensor 9 is connected. bulk material placed in the outlet of the measuring cell.
    Besides; The device for continuous determination of the moisture content of the bulk food product contains a bypass channel 10 located vertically and parallel to the longitudinal axis of the measuring cell and is connected to the plate at the outlet section by means of a combined circulation channel 11. The bypass channel has the same cross section over the entire length of the measuring cell .
    The bypass channel is equipped with an adjustment circuit for the level of the bulk food product, containing an actuator 12 that changes the cross section of the combined circulation channel, and a sensor 13 of the actual level values, which is a membrane made as a section of the wall 14 of the bypass channel on the opposite side of the measuring cells and connected by means of a device 15 for controlling the consumption of material with performers. lyny mechanism.
    In addition, the device is equipped with an additional element 16 for manually opening and closing the actuating mechanism.
    FIG. Figure 3 shows the individual positions of the switches 17-20 during the measurement and flow of voltage U, which relates to the electrical charge of the reference capacitor 21.
    During the first phase, the measuring capacitor 22 cells 1 are charged to a predetermined voltage U. At the same time, the reference capacitor 21 is discharged. Switches 17 and 19 are closed, and switches 18 and 20 are open. During the first phase, the voltage U is zero. During the second phase, the charge of the measuring capacitor 22 is recharged to the reference capacitor 21.
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    In this case, the switch 17 is closed, and the switches 17. 19 and. 20 are open. The voltage U is increased to complete discharge of the measuring condensate of the mouth 22. This recharge is carried out using an operational amplifier 23. During the third phase, the final value of the voltage U is transferred to the storage unit 24. The switch | g 19 is closed and switches 17-19 open. This phase charge and discharge of the measuring 22 and reference 21 capacitors is determined by the frequency and duration of the wetting process. tS The operating voltage Ug of the analog locking unit 24 is supplied to the subsequent control device, ng) to measure the moistening process of the material (by supplying water).
    A device 15 for controlling the consumption of material ensures that the bulk material passes through the measuring cell 1 with a deceleration, 25 while the speed of movement of the material more or less slows down in accordance with the consumption of material. Thus, the measuring cell 1 is carefully filled with material. To ensure the required degree of filling, the level of material is kept constant by controlling the opening position of the executive mechanism 12. Constant back pressure ensures that the working units (water supply valve and the like) do not control when the material flow is interrupted. erroneous commands.
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    The bulk density of the material is determined by a material weighing device, consisting of a month dose or a weight of 25 and a corresponding hinge suspension 26. Here, the measuring cell 1 is designed as a material weighing device. The original signal of the scale 25 on the signal wire 27 is supplied to the block 8 of the electronic signal processing.
    Taking into account the electrical conductivity and polarization properties of the products with additional weighting, comparing the obtained value with the electrical one increases the reliability of the measurement results (without determining the weight or bulk density of the material, reliable results are also obtained).
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    The electronic signal processing unit can be programmed so that it constantly measures, for example, the weight of the material, but does not evaluate the resulting values as long as they are within known permissible limits. Such a solution can be used, for example, when measuring the moisture content of raw wheat. An additional density estimate can not only increase reliability, but also be used to correct the measured value in the case of large density fluctuations.
    The measuring device 28 has an inlet 29, which is mainly vertically above the measuring cell 1.
    The measuring cell 1 and the bypass channel 10 are arranged in parallel, connected under the inlet using the transition channel 30, and converge into the combined circulation channel 11. In the transition channel 30, the material is distributed to the bypass channel 10 and the measuring cell 1. Material release from channel 11 is controlled by a device 15 for controlling the flow of material associated with a membrane 13 made as a level gauge located on the side of the bypass channel 10.
    The stiffening element 31 is mounted for rotation at the hinge 32. A pneumatic control valve 16 is also connected to the stiffening element 31, which, in the presence of a certain material pressure, is actuated through the membrane 13 and the stiffening element 31. In doing so, the valve 16 supplies pressurized air to the wire 33, which actuates the device 15, which controls the actuator 12 of the combined circulation channel 11. The pressure that is fed to the wire 33 also enters the pressure chamber 34 and controls the diaphragm 35 Here pressure compensates the pressure of the material.
    In addition, manual actuators are installed on the bypass channel 10 to open and close the actuator 12 to regulate the flow of material. Using the screw 36 and the stiffening element 31, the pneumatic adjusting valve 16 can be actuated and, thus, the actuating mechanism 12 can be fully opened or closed. Manual actuators allow complete unloading of the measuring apparatus 28, for example, to monitor the measuring capacitor 22 or the measuring cell 1,
    Under the integrated circulation channel 11 of the measuring apparatus 28, an instrument 37 is also installed to measure the material consumption s currently Измер The measured values of the capacitor 22 or both capacitor plates, the sensor 9 for the temperature of the bulk material, the scale 25 and the instrument 37 for measuring the consumption of material are fed to the signal wires block 8, which determines the lack of water and supplies the appropriate value as a control value to the regulator 38, which controls the motor 39 to supply the missing The amount of water in the material To control, device 40 again signals the lack of water.
    The combined circulation channel 11 has a device 15 for controlling the consumption of material in accordance with the set value of the sensor placed s in block 8 in which the actual one (g 37). The set value of material consumption is compared and the value crawled here is used to control the actuator 12 In addition to the TorOj B block 8, the water content and material consumption are also compared and evaluated, and the signals obtained are used to control the wetting or drying process.
    The device performs a double function; determines the exact value of the moisture content of the bulk material and ensures the removal of the exact amount of material from the silo 2,
    Figure 4 shows the continuous creation of the average composition of the material in the measuring zone of measuring cell 1,
    The continuous creation of the average composition of the material, t, e, the continuous formation of an always representative cross section of the incoming through,. material inlet 29 automatically
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    a load change is presented, but the formation of an exact average composition of the material can be achieved even in the case of a gradual change.
    The material is fed through the inlet 29, where it moves down the bypass channel 10 and the measuring cell 1 under the action of gravity. c, d and eh in the form of layers arranged one above the other. Component a is still in inlet 29, and component b begins to be distributed along the bypass channel 10 and measuring cell 1, Component i leaves the bypass channel 10 in the area of the actuator 12 " bypass channel 10, material transfer speed 25 is reached, corresponding to material consumption and cross section of the bypass channel.
    The situation is different in the measuring cell 1S, the configuration of which, in particular, the cross section in the electrical measurement zone and the narrowed outlet, slows down the material moving speed due to gravity. In this connection, the components e f, gs h, i, k are still in the measuring zone, but they are no longer in the bypass channel 10. The amount of material in measuring cell 1 may be, for example, 5-20 liters. In the zone 5 located directly above the actuator 12, there is a speed equalization between the material exiting at a relatively high speed from the bypass channel 10 and the material leaving the measuring cell 1o at a comparatively low speed. At the same time, at the speed coming out of the measuring cell the material is affected by the lower gap 3, which can be pre-installed with the aid of the valve K,
    Thus, the speed of movement of the material over the measuring cell 1 is many times less than the speed ne30
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    It is assumed that the composition of the material, the movement of the material through the bypass catalyst, e, its individual components, to the variable 10 (approximately in accordance with a certain time), With the aim of both cross sections of the material illustrating such a case in FIG. 4 la A and B, if the upper transverse cross
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    a load change is presented, but the formation of an exact average composition of the material can be achieved even in the case of a gradual change.
    The material is fed through the inlet 29, where it moves down the bypass channel 10 and the measuring cell 1 under the action of gravity. c, d and eh in the form of layers arranged one above the other. Component a is still in inlet 29, and component b begins to be distributed along the bypass channel 10 and measuring cell 1, Component i leaves the bypass channel 10 in the area of the actuator 12 " the bypass channel 10 achieves the speed of 5 movement of the material corresponding to the material consumption and the cross section of the bypass channel.
    The situation is different in the measuring cell 1S, the configuration of which, in particular, the cross section in the electrical measurement zone and the narrowed outlet, slows down the speed of movement of the material due to gravity. In this connection, the components e f, gs h, i, k are still in the measuring zone, but they are no longer in the bypass channel 10. The amount of material in measuring cell 1 may be, for example, 5-20 liters. In the zone 5 located directly above the actuator 12, there is a speed equalization between the material exiting at a relatively high speed from the bypass channel 10 and the material leaving the measuring cell 1o at a comparatively low speed. At the same time, at the speed coming out of the measuring cell the material is affected by the lower gap 3, which can be pre-installed with the aid of the valve K,
    Thus, the speed of movement of the material over the measuring cell 1 is many times less than the speed ne0
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     moving material through the bypass channel 10 (approximately in accordance with both cross sections of materials A and B, if the upper cross sections
    The bypass channel 10 of the cell 1 in the zone of the membrane 13 is approximately the same). The smaller the gap S, the lower the speed of movement of the material in the measuring cell 15, the longer the residence time of the material in the measuring is, the smaller the volume of each component in the measuring zone and the greater number of different components of the material in the measuring zone, which ultimately contributes to the formation of a more representative average composition of the material in the measuring cell 1. Therefore, the electrical measurement in FIG. 4 gives the average value as a result of measuring the components e - k. In this case, the measurement is somewhat slower compared with the speed of movement of the remaining material flow, but this has a positive effect on the formation of a wider average composition of the material, which in turn can have a positive effect on the subsequent operations, since, for example, the possible addition of water takes a certain amount of time. . The gap S and the total material consumption can be adjusted by means of the actuator 12 so that either maximum accuracy is achieved with the addition of water or the material is optimally wetted, and all the advantages of controlling the process of adding water can be used.
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    权利要求:
    Claims (3)
    [1]
    Invention Formula
    1, Method for continuous determination of the moisture content of bulk food products, in particular, grain and its processed products, which involves dividing the flow of bulk food products into measured and bypass flows, passing them under the action
    gravity, respectively, through the measuring and bypass zones, followed by obtaining a combined flow behind these zones, slowing the flow rate of the measured flow of the flowing food product by decreasing its outlet cross section and determining the moisture content of the measured food capacitance flow, characterized in that, for the purpose of
    1433427 °
    and measuring accuracy due to obtaining a more representative average sample of material in the measurement zone, in addition, control of the flow rate of the bypass flow of bulk food by adjusting the flow section of the flow of bulk food that is combined with the flow and bulk of the flowable bulk food by varying the flow level of the bulk food flow that is combined with the flow level of the bulk flowable food that is flown by changing the flow level of the bulk food flowing through the flow meter. food in the bypass zone.
    [2]
    2o The method according to p, 1, about tln h a yu and u with teM; that the moisture content of the bulk food product is determined by the average measured value of the change in the electrical capacitance of the measured flow.
    [3]
    3. Devices for continuous determination of the moisture content of bulk food products, in particular, grain and its processed products, containing a bulk food product located in the flow path of the bulk food product, made in the form of a condenser, a pass-through measuring cell, the outlet opening of which is less than its inlet opening, associated with the converter changes in the capacitance capacity caused by a change in the moisture content of the flow of the bulk food product, connected to the electronic signal processing unit, from the fact that Improving accuracy by obtaining a more representative averaged sample of material in the measurement zone, it is equipped with a bypass channel with a level control loop for bulk food in it, while the bypass channel is located vertically and parallel to the longitudinal axis of the measuring cell and is connected to the latter at the outlet section through the combined circulation channel
    4 The device according to claim 3, characterized in that the bypass channel along the entire length has the same cross section that is larger than the outlet of the measuring cell
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    5, Device pop 3, characterized in that the level control circuit of the bulk food product in the bypass channel contains an actuator that changes the cross section of the combined circulation channel and the sensor (actual level values, 15
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    5, Device pop 3, characterized in that the level control circuit of the bulk food product in the bypass channel comprises an actuator that changes the cross section of the combined circulation channel, and a sensor (actual values of
    TU /
    FIG.
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    类似技术:
    公开号 | 公开日 | 专利标题
    SU1433427A3|1988-10-23|Method and apparatus for continuous measurement of moisture content of loose food products
    US4944428A|1990-07-31|Apparatus for the automatic determination of a continuous bulk material throughput by means of a continuous balance
    US4590795A|1986-05-27|Process and device for continuously determining the moisture content of spoilable foodstuffs
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    US5121638A|1992-06-16|Method and device for recording the flow rate of a stream of bulk material
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    US4890441A|1990-01-02|Method and apparatus for packaging fluent solid material, in particular coffee
    SU850586A1|1981-07-30|Method and device for automatic control of soda monohydrate production process in drum crystallizer
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    SU1741108A1|1992-06-15|Apparatus for regulation humidity of free-flowing material
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    SU527600A1|1976-09-05|Continuous dosing method
    SU787454A1|1980-12-15|Unit for producing synthetic detergent
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    SU1413389A1|1988-07-30|Method of automatic regulation of drying process
    SU1242718A1|1986-07-07|Method of continuous weighing
    GB2119104A|1983-11-09|Weighing fluent material
    JPH07270222A|1995-10-20|Measuring apparatus
    同族专利:
    公开号 | 公开日
    DK46282A|1982-02-03|
    ES8302307A1|1982-05-16|
    ES503564A0|1982-05-16|
    DE3024794A1|1982-01-28|
    DK157345B|1989-12-18|
    WO1986004417A1|1986-07-31|
    US4547725A|1985-10-15|
    KR860001809B1|1986-10-24|
    DE3175858D1|1987-02-26|
    DD160080A5|1983-04-27|
    KR830005653A|1983-09-09|
    DK157345C|1990-05-14|
    引用文献:
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    GB597800A|1945-08-27|1948-02-03|Marconi Instruments Ltd|Improvements in apparatus for determining the dielectric properties of granular or powdery materials|
    GB701862A|1951-10-09|1954-01-06|Electr & Allied Ind Res Ass|The measurement of di-electric dispersion|
    DE1130206B|1956-01-11|1962-05-24|Hauni Werke Koerber & Co Kg|Device for capacitive moisture measurement of tobacco and similar goods|
    US3691457A|1970-08-28|1972-09-12|Cae Ind Ltd|Moisture measurement of grain|
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    GB1544416A|1975-10-08|1979-04-19|Molins Ltd|Apparatus for feeding tobacco or similar particulate material in a uniform stream|
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    RU2061212C1|1988-05-06|1996-05-27|Йесма Матадор А/С|Method of drawing metered samples and performing analysis of samples and device for realization of this method|
    DE59200669D1|1991-02-25|1994-12-01|Claas Ohg|Device for measuring a mass flow with a measuring capacitor.|
    US5448069A|1991-04-23|1995-09-05|Buhler Ag Maschinenfabrik|Infrared measurement of constituents of particulate foodstuffs|
    SE468334B|1991-04-23|1992-12-14|Peter Perten|SETTING AND DEVICE FOR INFRASTRUCTURE ANALYSIS, SPECIFICALLY REGARDING FOOD|
    CA2182989C|1995-09-01|2001-03-27|Frederick William Nelson|Grain moisture sensor|
    DE19536766A1|1995-10-02|1997-04-03|Somos Gmbh|Procedure for the determination of specific material characteristics|
    US5852368A|1996-12-27|1998-12-22|Larsen; Ebbe Busch|Sensor for the measurement of moisture in a flow of material|
    AU2971900A|1999-01-21|2000-08-07|Sgi International|Method and apparatus for measuring fluid levels in vessels|
    US6502460B1|2000-01-11|2003-01-07|Delphi Technologies, Inc.|Fluid level measuring system|
    US6497144B1|2000-07-31|2002-12-24|Delphi Technologies, Inc.|Method for measuring fluid level|
    US6686749B2|2001-10-25|2004-02-03|Deere & Company|Multiple frequency grain moisture sensor for combines|
    US6945287B2|2002-11-22|2005-09-20|Crown Iron Works Company|Columnar seal for particle processing system|
    US8569644B2|2007-11-13|2013-10-29|Minch Malt Limited|Process and apparatus for analysing and separating grain|
    KR101147324B1|2012-03-29|2012-05-22|강기중|Grain inducing apparatus for measuring moisture of grain meter|
    ITUA20161448A1|2016-03-08|2017-09-08|Freeray S R L|METHOD AND APPARATUS FOR QUALITY CONTROL OF SOLID PRODUCTS IN GRANULAR OR PULVERIZED FORM|
    CN113029511B|2021-05-27|2021-11-02|江西农业大学|Discrete traditional Chinese medicinal material flow layer ventilation resistance detection equipment and detection method thereof|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19803024794|DE3024794A1|1980-06-30|1980-06-30|METHOD AND DEVICE FOR DETERMINING CHARACTERISTICS, ESPECIALLY OF CEREALS|LTRP1216A| LT2544B|1980-06-30|1993-09-28|BUREAU CONTINUOUS DREGMES DETERMINATION FUNCTION AND EQUIPMENT|
    LV931212A| LV5643A3|1980-06-30|1993-11-12|Method for continuous determination of moisture in brush products and appliance|
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