SU582993A1

SU582993A1 - Screw press control system

Info

Publication number: SU582993A1
Application number: SU7602390173A
Authority: SU
Inventors: Анатолий Агзамович Галиулин; Анатолий Владимирович Иваненко; Владимир Александрович Долгозвяг
Original assignee: Одесский Технологический Институт Пищевой Промышленности Им. М.В.Ломоносова
Priority date: 1976-07-09
Filing date: 1976-07-09
Publication date: 1977-12-05

Description

1one

Изобретение относитс к машиностроению и предназначено дл использовани на заводах первичной переработки плодово годного .The invention relates to mechanical engineering and is intended for use in fruit processing plants in primary processing plants.

Известна система управлени шненового пресса с загрузочным бункером, конусом и дожимным шнековым устройством , содержаща управл емый редукционный клапан и измеритель остаточного сусла в выжимках, первичный прёобразователь которого установлен йосл .дожимного устройства 1Д . . .A known control system for a shnenovoy press with a hopper, a cone and a booster screw device, comprising a controlled reduction valve and a residual wort meter in the squeeze, the primary pre-former of which is installed a 1D booster device. . .

Однако в системе управление непрерывным процессом прессовани осуществл етс дискретно, при этом система отключаетс от обзьекта на врем заполнени стакана-сборника, которое соизмеримо со средним временем технологического цйкйа прессовани мезги (временем пребывани мезги в шнековом прессе), а управл ющее воздействие „ существенно запаздывает.However, the system controls the continuous pressing process discretely, and the system is disconnected from the object at the time of filling the collection cup, which is commensurate with the average technological process of pressing the pulp (the residence time of the screw in the screw press), and the control action is significantly delayed.

Кроме того, определение величины ех:таточного сусла в выжимках при из . менении давлени в предконусной камере неточно. Это объ сн етс тем, что содержание сусла в выжимках определ ю по объему сусла, полученного после дожимного устройства, завис щему от количества переработанных выжимок In addition, the determination of the magnitude of ex: pulp wort in squeeze when out. The pressure in the pre-cone chamber is not accurate. This is due to the fact that the content of the wort in the squeeze is determined by the volume of the wort obtained after the booster device, depending on the amount of the processed squeeze.

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врем измерени , т.е. от производительности дожимного устройства, котора , в свою очередь, пропорциональна давлению в камере,measurement time, i.e. the performance of the booster device, which, in turn, is proportional to the pressure in the chamber,

С целью повьшени производительности систег-и и качества получаемого продукта она снабжена дополнительным измерителем влажности выжимок, первичный преобразователь которого размещей после конуса, и автоматичесКИМ рефлектометром, установленншл в бункерной части пресса.In order to improve the performance of the system and the quality of the product obtained, it is equipped with an additional moisture meter, the primary converter of which is placed after the cone, and an automatic reflectometer installed in the bunker part of the press.

На чертеже схематически показана система управлени шнекового пресса.The drawing schematically shows the control system of a screw press.

Claims

The control system of a screw press 1 with an electric motor 2, a cone and a screw auger device 4 with a motor of electric drive 5 is equipped with an automatic refractometer 6 for determining the content of dry substances in the wort and the primary converter 7 of the moisture meter of the pulp coming from the press 1 and the primary converter 8 of the meter moisture conditionally dry husks, installed after the booster device 4. The outputs of these converters are connected to the node 9 and then through the actuator 10 to the controlled gear onnym valve 11, to / tory regulates the pressure in system 12 cal, hydraulic press, sozdavaemo hydraulic pump 13, the pressure in the hydraulic snsteme 1 is controlled by a manometer Powered System as follows Mezga is pressed in the press 1, with a small amount of Marc wort. they are advanced in the pre-conical Kaiwiepe, where a hardware device 4 is installed, the screw of which partially enters the front camera and captures the squeeze from there. . . At the exit of the screw press 1 and the booster device 4, primary transducers 7, 8 are located, the signals from which are sent to node 9. The third input of node 9 is connected to an automatic refractometer, -split-. at the nozzle of the bunker part of the screw press. The volume content of the wort in the squeeze is determined in the node 9 by the wet output of the squeeze, taking into account the processed raw material S, the moisture content of the dried sludge and the content of dry distillation in the wort, based on the ratio: g-jf W-Wo (100-C ) -W - volume content of the wort in marc; K is a coefficient equal to -U. (take in the range of 0.9-1.0), / 1 the density of the husks and. wort, kg / m ;. WjjWo is the moisture of the husks coming out of the press and the humidity of the conditionally dry husks,% C is the solids content in the wort f%, Node 9 generates a signal, the magnitude and sign of which is proportional to the deviation of the wort volume content from the set value from This The signal arrives at the actuator 10, which with the help of a controlled pressure reducing valve 1 changes the pressure in the hydraulic system 12 of the press, and consequently the pressure, in its pre-pressure chamber 1.. ...:. , : Technological time. th; Iy: la Pressing of the pulp (the residence time of the pulp in a screw press) is commensurate with the dynamic | press characteristics:: the delay time and the constant control time. Therefore, for efficient control, an automatic refractometer b is installed in the bunker part of the press. If the bunker: press is pressed, the Elder has a different solids content on the wort (it is accepted to process one sort of grape or variety mixture in one line, therefore the content of solids is related to the maturity of the grape and humidity conditionally dry husks) t then the signal instantaneously receives 1G node 9 and the actuator 10 and then is processed while moving the pulp from the loading part of the press to the pre-cone chamber, the trace quently, the refractometer signal is proactive and regulators for Automatic control system. The control system of the continuous screw press allows for greater stability and accuracy in maintaining the volume content of the wort in the squeeze when processing various raw materials, since, unlike the known systems, it takes into account the parameters of the processed raw materials. In addition, the quality of regulation is improved due to the action of the anticipatory signal from the automatic refractometer, and the use of two moisture meters to measure the moisture of the squeeze coming out of the press, and the humidity of the conditionally dry squeeze after the booster device, improves the accuracy of measurements, as in the resulting signal The systematic component of measurement error is significantly reduced, which in modern moisture meters far exceeds the value of the random component of error. This allows the use of a single graded characteristic of moisture meters for different raw materials. An inventive control system with a hopper, a cone and a booster screw device, comprising a controlled reduction valve and a squeeze moisture meter, the primary converter of which is installed after the booster device, which, in order to improve the performance and quality of the product, it is equipped with an additional husk moisture meter, the primary transducer of which is placed after the cone, and an automatic refractometer installed in the bunker oh part of the press. Sources of information taken into account in the examination; 1. USSR author's certificate W 380487, cl. B 30 B 15/24, 1970.