Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B30—PRESSES
  • B30B—PRESSES IN GENERAL
  • B30B9/00—Presses specially adapted for particular purposes
  • B30B9/30—Presses specially adapted for particular purposes for baling; Compression boxes therefor
  • B30B9/3003—Details
  • B30B9/3007—Control arrangements
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B30—PRESSES
  • B30B—PRESSES IN GENERAL
  • B30B9/00—Presses specially adapted for particular purposes
  • B30B9/30—Presses specially adapted for particular purposes for baling; Compression boxes therefor
  • B30B9/305—Drive arrangements for the press ram
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B30—PRESSES
  • B30B—PRESSES IN GENERAL
  • B30B9/00—Presses specially adapted for particular purposes
  • B30B9/30—Presses specially adapted for particular purposes for baling; Compression boxes therefor
  • B30B9/3092—Presses specially adapted for particular purposes for baling; Compression boxes therefor with two or more stationary press boxes co-operating alternately with a press ram or simultaneously with press rams

Definitions

• the invention relates to a waste compacting unit according to the preamble of the independent claim directed thereto.
• the pressing power needed for the pressing process is produced by an electric pressing motor e.g. by using a hydraulic pump arrangement. Hydraulic fluid pressurized by the pump arrangement is being led through a valve arrangement into a hydraulic cylinder in order to move the pressure piston carrying out the pressing, with a pressing motion taking place in one direction and a return movement taking place in the opposite direction.
• a waste compacting unit which has at least receiving means, such as an opening, being closable with a lid, for feeding of waste therein, a pressing chamber for compacting a parcel of waste being fed therein at any given time and for removing thereof through an exhaust arrangement belonging thereto, and electric pressing means for compacting the waste parcel and for feeding of compacted waste parcels one at a time on dose principle into one or more waste containers.
• the pressing means in the essentially horizontal pressing chamber of the waste compacting unit are arranged operable by a continuous pressing movement, wherein they comprise a piston that presses the waste parcels alternatively against counterpart surfaces in the pressing chamber at opposite ends of the pressing chamber, in order to drop the compacted waste parcels into one or more waste containers through exhaust openings existing at opposite ends.
• the purpose of the above mentioned solution is especially the treatment of household waste in a way that waste materials differing from one another can be compacted into separate waste containers.
• the pressing power of such a waste compacting unit is rather moderate, which is why the pressing chambers for different kinds of materials are very small especially in order to fit the waste compacting unit into kitchen hardware. Due to the use of the customary electric motor, a typical problem in this kind of waste compacting unit is due to clogging of the apparatus, which requires removal of the waste to be pressed from the pressing chamber in order to recover the functioning of the waste compacting unit.
• the waste compacting unit according to the present invention is primarily characterized by what has been presented in the characterizing part of the independent claim directed thereto.
• the waste compacting unit according to the invention may be mentioned simplicity and efficiency of the waste compacting process enabled by the same and the applications suitable for use therein, thanks to minimizing the massiveness of applications needed therein and its working power especially by utilizing therein one or more frequency inverter arrangement operated electrical motors, which are arranged to move the piston in the pressing chamber in longitudinal direction e.g. through a direct drive with a screw driven manner or instead, in a belt or a chain driven manner, the frequency inverter arrangement comprising a single-phase current operated frequency inverter, being provided with a programmable logic and the nominal power thereof being applicable for single- phase current.
• the pressing motor of the pressing means comprises a three-phase electric motor, the power thereof corresponding essentially to the same of the frequency inverter, wherein the power of the one or more electric motors in a waste compacting unit meant especially for handling of small size waste parcels is between 0,2 and 1,5 kW, most profitably 0,4 kW.
• the processing performed by the waste compacting unit is therefore possible to be carried out efficiently enough with single-phase current instead of three-phase current thanks to the frequency inverter principle being utilized therewith.
• the frequency inverter principle the functioning of a frequency inverter is based on semiconductor technique.
• the frequency inverter rectifies alternating current of an electricity network into direct current .
• a frequency inverter at present there may also be integrated a so called programmable logic, such as e.g. a microprocessor control, in which information of the motor and parameters having impact on its desired functioning are set.
• programmable logic such as e.g. a microprocessor control
• Frequency inverters are able to follow the behavior of the phases of the motor and "listen to" the motor's load situation and its actual rotation speed. By adjusting phase differences and currents, torsion of the motor may be enhanced while, however, keeping the rotation speed in a desired value. Because the speed of the motor is based on the frequency of the supply voltage, it may, according to need, be steplessly adjusted even higher than the electric motor's nominal speed, whereby, however, the driving torque of the electric motor decreases in practice.
• a frequency inverter utilized in the invention enables use of the electric motor both with a lower and a faster speed than its nominal speed in certain phases of the pressing process. Because the torque of the electric motor, however, decreases as the rounds per minute rise, in higher speeds there cannot be a too high pressure response. This can be compensated in the frequency inverter use by decreasing the nominal speed of the electric motor in higher pressure responses, wherein its torque rises and at the same time the electric current used by the same stays in desired limits.
• waste compacting unit according to the invention requires is minimal, because it is expected only to have as much power as is needed to compress each single waste parcel at a time.
• each single waste parcel being compressed into a third of its original size is estimated to be enough, when in the compressors executed with customary technique, waste mass is typically expected to be compressed in a relation of 1:10.
• the invention relates to a waste compacting unit, which has at least receiving means 1, such as an opening being closable with a lid K for feeding of waste, a pressing chamber 2 for compacting a parcel of waste being fed therein at any given time and for removing thereof through an exhaust arrangement 3 belonging to the unit, and electrical pressing means 4 for compacting the waste parcel and for feeding compacted waste parcels B' one at a time on dose principle into one or more waste containers A.
• receiving means 1 such as an opening being closable with a lid K for feeding of waste
• a pressing chamber 2 for compacting a parcel of waste being fed therein at any given time and for removing thereof through an exhaust arrangement 3 belonging to the unit
• electrical pressing means 4 for compacting the waste parcel and for feeding compacted waste parcels B' one at a time on dose principle into one or more waste containers A.
• the pressing means 4 in the pressing chamber 2, existing essentially horizontally in the waste compacting unit, are arranged operable by a continuous pressing movement, wherein the pressing means 4 comprise a piston 4d, which presses the waste parcels B alternatively against counterpart surfaces V in the pressing chamber at opposite ends I, II of the pressing chamber 2, for dropping the compacted waste parcels B' into one or several waste containers A through exhaust openings 3; 3a, 3b existing at the opposite ends.
• the pressing means 4 comprises one or more electric motors 4a operated by a frequency inverter 4a ' , whereby each electric motor is arranged to move the piston 4b in the longitudinal direction s of the pressing chamber 1 e.g. through direct drive in a screw driven manner or on the principle 4c as shown in figures 2 or 3 through power transmitted from the electric motor by a belt or a chain or in the like manner.
• the frequency inverter arrangement 4a' comprises most profitably a single-phase current operated frequency inverter, being provided with a programmable logic and the nominal power thereof being applicable for single- phase current.
• the pressing motor 4a of the pressing means comprise a three-phase electric motor, the power thereof corresponding essentially to the same of the frequency inverter, whereby the power of one or more electric motors being used in a waste compacting unit, being meant particularly for treatment of small sized waste parcels, is between 0,2-1,5 kW, preferably e.g. 0,4 k .
• the small sized waste parcels in this context e.g. typical household “garbage bag waste" (20-25 1) are meant, weighing a few kilograms at the highest, when instead the waste containers meant for collecting household waste are usually hundreds of liters in volume, the weight limit, set by the forwarding companies for handling, being typically 40-60 kg.
• the waste compacting unit according to the invention its power supply is arranged by an accumulator battery W, whereby it comprises an inverter assembly for altering direct current to alternating current for driving the pressing motor of the pressing means. Therefore, the waste compacting unit according to the invention may be used in a self-powered manner e.g. by solar power by a solar cell arrangement coupled therewith or in a corresponding principle, by using wind power.
• the waste compacting unit is provided with weighing means 5 for determining weight of each single waste parcel B.
• the waste compacting unit may also be equipped with cleansing means 8 for keeping the weighing means 5 clean, which may be carried out simply with a wiper, brush and/or the like in connection with the bottom part of the piston 4b, which, while being moved continuously in the pressing chamber 1, cleans the surface of the weighing means 5.
• the weighing plate At both ends of the weighing plate are arranged closing plates L, by lowering of which, the waste parcel B' having been compacted at each time can be dropped into the waste container A beneath. After the compacted waste parcel B' has been removed, the weighing means 5 can "calibrate" themselves before the next waste parcel is fed into the pressing chamber, wherein cumulative weighing errors caused by possible remainder matter on the weighing means are avoided.
• the waste compacting unit comprises a programmable logic 6, such as one or more micro processors, logic circuits and/or the like, in order to control an automatic independent functioning of the waste compacting unit.
• a programmable logic 6 such as one or more micro processors, logic circuits and/or the like
• waste compacting unit is provided with a wirelessly, advantageously e.g. on cloud server principle or in a corresponding manner, operating monitoring assembly 7 for storing of user- specific registration information related to single waste parcels being brought to the waste compacting unit, for monitoring of the level in the waste container and/or the total mass of the waste being fed therein, for indicating of functional failures and/or exceeding of a total mass allowed for the waste container, and/or for a corresponding purpose.
• waste compacting unit may therefore be carried out operate with e.g. a user-specific identification, wherein the waste of each user can be registered e.g. for user-specific billing e.g. on cloud server principle etc.
• the lid K of the waste compacting unit is furthermore arranged to be opened e.g. with an electrical identification for controlled use of the waste compacting unit.
• the waste compacting unit is arranged as a lid structure to be coupled removably with a waste container A. Therefore, the waste compacting unit according to the invention can also be used as a post installation in connection with most different kinds of waste containers.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Refuse Collection And Transfer (AREA)
• Processing Of Solid Wastes (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=53680877

Family Applications (1)

Country Status (2)

Family Cites Families (11)

• 2015
  • 2015-01-26 EP EP15740521.8A patent/EP3099480A4/de not_active Withdrawn
  • 2015-01-26 WO PCT/FI2015/050049 patent/WO2015110712A1/en not_active Ceased

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