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1. 发明授权

US11179729B2 Method and apparatus for washing and separating plastics material 有权
公开(公告)号：US11179729B2
公开(公告)日：2021-11-23
申请号：US16444433
申请日：2017-12-20
申请人： PREVIERO N. S.R.L.
发明人： Flavio Previero
IPC分类号： B03B5/02 , B29B17/02 , B03B5/38 , B08B3/10
摘要： A method and apparatus for washing and separating pieces of plastics material from contaminating material that also includes metal elements includes a stirring device having a plurality of blades which are driven in a washing fluid to generate a turbulent stirring action to mechanically remove part of the contaminating material from the plastics material. The tilt of the blades and the rotation speed of the stirring device are chosen carefully to generate an upward thrusting action to maintain the plastics material with a specific weight that is greater than the specific weight of the fluid in a floating condition. The plastics material is retained inside the container for sufficient time to obtain a desired degree of purity and decontamination for the plastics material, after which it is evacuated by controlled overflow.

2. 发明申请

US20190134856A1 WASHING AND SEPARATING METHOD AND APPARATUS FOR PLASTICS MATERIALS 审中-公开
公开(公告)号：US20190134856A1
公开(公告)日：2019-05-09
申请号：US16307170
申请日：2017-06-05
申请人： PREVIERO N. S.R.L.
发明人： Flavio PREVIERO
IPC分类号： B29B17/02 , B08B3/10 , B03B5/66 , B03B11/00
摘要： A method and apparatus for washing and separating pieces of plastics material from contaminants includes supplying to a washing container pieces of plastics material containing contaminating material and an entering flow of washing fluid. A turbulent stirring action to detach and separate mechanically the contaminating material from the plastics material is generated. evacuating through overflowing, through an outlet port An outlet flow of washing fluid and a quantity of plastics material that has undergone the turbulent stirring action is evacuated by overflow through an outlet port. A controlled-conveying and retaining arrangement is driven to retain the plastics material in the washing container and to advance in a controlled manner the quantity of plastics material to the outlet port independently of the advancement of the outlet flow of washing fluid. An adjustable bulkhead is arranged in the washing fluid at a depth with respect to the free surface to divert from the outlet port the pieces of plastics material that, once supplied to the container, by advancing more on the surface, tend to reach the outlet zone of the washings container. The bulkhead guides and forces the pieces of plastics to undergo the turbulent stirring action to separate and detach the adhering contaminants therefrom.

3. 发明授权

US11220026B2 Washing and separating method and apparatus for plastics materials 有权
公开(公告)号：US11220026B2
公开(公告)日：2022-01-11
申请号：US16307170
申请日：2017-06-05
申请人： PREVIERO N. S.R.L.
发明人： Flavio Previero
IPC分类号： B29B17/02 , B08B3/10 , B03B5/66 , B03B11/00 , B03B5/40 , B03B5/38 , B03B5/02 , B29K105/06 , B29L31/00 , B29L7/00
摘要： A method and apparatus for washing and separating pieces of plastics material from contaminants includes supplying to a washing container pieces of plastics material containing contaminating material and an entering flow of washing fluid. A turbulent stirring action to detach and separate mechanically the contaminating material from the plastics material is generated, evacuating through overflowing, through an outlet port An outlet flow of washing fluid and a quantity of plastics material that has undergone the turbulent stirring action is evacuated by overflow through an outlet port. A controlled-conveying and retaining arrangement is driven to retain the plastics material in the washing container and to advance in a controlled manner the quantity of plastics material to the outlet port independently of the advancement of the outlet flow of washing fluid. An adjustable bulkhead is arranged in the washing fluid at a depth with respect to the free surface to divert from the outlet port the pieces of plastics material that, once supplied to the container, by advancing more on the surface, tend to reach the outlet zone of the washings container. The bulkhead guides and forces the pieces of plastics to undergo the turbulent stirring action to separate and detach the adhering contaminants therefrom.

4. 发明申请

US20180356277A1 METHOD FOR DOSING ONE OR MORE TREATMENT SUBSTANCES IN A SYSTEM FOR WASHING AND RECYCLING PLASTICS 审中-公开
公开(公告)号：US20180356277A1
公开(公告)日：2018-12-13
申请号：US15778710
申请日：2016-11-25
申请人： PREVIERO N. S.R.L.
发明人： Flavio PREVIERO
IPC分类号： G01G13/00 , G01G17/06 , B08B3/04 , B08B13/00 , B29B17/02 , B29B17/04
CPC分类号： G01G13/006 , B03B11/00 , B08B3/04 , B08B13/00 , B29B17/02 , B29B17/0412 , B29B2017/0289 , B29K2067/003 , G01G13/22 , G01G17/04 , G01G17/06 , Y02W30/622
摘要： A method and apparatus for dosing treatment substances into a system for washing and recycling synthetic plastics is provided. The method includes providing a freely supported container operationally connected to a programmable weighing and control unit. The container is overturned by gravity between a treatment substance loading and unloading position. The method further includes storing a reference value of a weight suitable for overturning the container to the unloading position, supplying a treatment substance to the container, detecting the weight thereof, stopping the supply upon reaching a preset weight value, and supplying a washing substance to the container until the reference value is reached. Upon reaching the reference value, gravity overturns the container to the unloading position and sends the treatment substances to synthetics plastic washing modules.

5. 发明申请

US20160263777A1 APPARATUS AND METHOD FOR SEPARATING MATERIALS OF VARIOUS TYPE 有权
标题翻译：用于分离各种材料的装置和方法
公开(公告)号：US20160263777A1
公开(公告)日：2016-09-15
申请号：US15031566
申请日：2014-11-20
申请人： PREVIERO N. S.R.L.
发明人： Flavio PREVIERO
IPC分类号： B29B17/02 , C08J11/06
CPC分类号： B29B17/02 , B29B2017/0203 , B29B2017/0255 , B29B2017/0258 , B29K2067/003 , C08J11/06 , C08J2367/02 , Y02W30/622
摘要： A method for separating materials of various type having different softening temperature values, includes pouring a mixture of flakes and fragments of materials on a movable receiving and conveying device in a uniformly distributed manner and advancing it along a first portion of path; actuating an electromagnetic inductor to heat an outer metal surface by electromagnetic induction, which surface is included in the movable receiving and conveying device to achieve a first lower softening temperature corresponding to a first material of the mixture; subjecting the mixture to a separating action during which a first fraction, remains stuck to the outer metal surface, whereas a remaining second fraction of materials having higher softening temperatures than the first softening temperature freely slips by gravity towards a lower receiving zone.
摘要翻译：一种用于分离具有不同软化温度值的各种材料的方法，包括以均匀分布的方式将片状物和碎片的混合物倾倒在可移动的接收和传送装置上，并沿着路径的第一部分推进; 致动电磁感应器以通过电磁感应加热外部金属表面，该表面包括在可移动的接收和输送装置中，以实现对应于混合物的第一材料的第一较低的软化温度; 使混合物经受分离作用，其中第一部分保持粘附到外部金属表面，而具有比第一软化温度更高的软化温度的剩余的第二部分材料通过重力自由地向下接收区滑动。

6. 发明授权

US10792841B2 Method and apparatus for washing sheets of plastic material 有权
公开(公告)号：US10792841B2
公开(公告)日：2020-10-06
申请号：US16307033
申请日：2017-06-05
申请人： PREVIERO N. S.R.L.
发明人： Flavio Previero
IPC分类号： B29B17/02 , B08B3/04 , B03B5/38 , B03B11/00 , B03B5/02 , B03B5/40 , B29B17/00 , B29K105/06 , B29L7/00
摘要： A method and apparatus for washing sheets of plastic material originating from industrial and agricultural waste, for subsequent reuse thereof as a raw material. The sheets of plastic material, precut into soiled pieces of large dimensions, and a water flow are supplied to a washing tank containing a water bath; a screw stirrer generates intense stirring of the water bath and recirculation, inside the tank, of the soiled plastic pieces that causes the contaminating material to be detached and separated by sedimentation from the plastic pieces. The cleaned pieces of plastic material of large dimensions, devoid of contaminant, which float in the water bath are removed by dragging, in a floating condition, along a discharging channel by the combined action of a dragging device and of a water flow that exits the washing tank; the dragging device, consisting of an endless belt, extends from one side of the washing tank along the discharging channel, supported in a freely tiltable manner.

7. 发明申请

US20190321831A1 METHOD AND APPARATUS FOR WASHING PLASTICS MATERIALS 审中-公开
公开(公告)号：US20190321831A1
公开(公告)日：2019-10-24
申请号：US16472257
申请日：2017-12-27
申请人： PREVIERO N. S.R.L.
发明人： Flavio PREVIERO
IPC分类号： B03B5/38 , B29B17/02 , B29B17/04
摘要： Method for washing a plastics material and for separating contaminating substances therefrom comprises the steps of: supplying a first flow of a washing fluid together with the plastics material with contaminants to a washing container in which a stirrer generates a turbulent action to detach mechanically the contaminants adhering to the plastics material, enabling a first fraction of heavier contaminants to precipitate onto a first bottom portion of the container, thus performing a first action of separating contaminants; transferring a second flow: of fluid with floating plastics material from the container to a first separating chamber, in which a second separating action takes place with the precipitation of a second fraction of the contaminants onto a second bottom portion of the first chamber; conveying a third flow of fluid with floating plastics material from the first chamber to a second separating chamber and evacuating by overflowing an outgoing flow of fluid together with the processed plastics material; in the transit froth the first chamber to the second chamber the agglomerates of floating plastics are disaggregated, and to the third flow and to the plastics material a downward propelling action inside the second chamber is imparted to promote a third separating action with precipitation of a third fraction of the contaminants onto a third bottom portion of the second chamber; removing from the second chamber a recirculation flow comprising precipitated fluid and contaminants and sending the recirculation flow to a screen unit that retains the contaminants, returning the washing fluid to the first or second chamber. The apparatus for implementing the aforesaid method is also disclosed.

8. 发明授权

US09827693B2 Plant and method for separating labels and other materials from plastic bottles 有权
公开(公告)号：US09827693B2
公开(公告)日：2017-11-28
申请号：US14893453
申请日：2014-05-23
申请人： PREVIERO N. S.R.L.
发明人： Flavio Previero
IPC分类号： B07B9/00 , B29B17/02 , B07B11/04 , B07B7/01 , B29L31/00 , B29L31/56 , B29K67/00
CPC分类号： B29B17/02 , B07B7/01 , B07B9/00 , B07B11/04 , B29B2017/0203 , B29B2017/0234 , B29B2017/0241 , B29K2067/003 , B29L2031/565 , B29L2031/7158 , B29L2031/744 , Y02W30/622
摘要： A plant and a method for separating labels, caps and other contaminating materials from containers and bottles made of plastics, in particular bottles made of PET, in the field of treating and recycling plastics.

9. 发明申请

US20190351427A1 METHOD AND APPARATUS FOR WASHING AND SEPARATING PLASTICS MATERIAL 审中-公开
公开(公告)号：US20190351427A1
公开(公告)日：2019-11-21
申请号：US16444433
申请日：2017-12-20
申请人： PREVIERO N. S.R.L.
发明人： Flavio Previero
IPC分类号： B03B5/02 , B29B17/02
摘要： A method for washing and separating pieces of plastics material from contaminating material that also includes metal elements, comprises the steps of: supplying, to a washing container, a washing fluid, having a first specific weight value , and the pieces of plastics material joined to the contaminating material; driving, in the washing container, a stirring arrangement provided with blades for generating in the washing fluid a turbulent stirring action to remove from the plastics material, through mechanical action, the part of contaminating material adhering thereto. The tilt of the blades and the rotation speed of the stirring arrangement are chosen carefully to generate a thrusting action upwards so as to maintain in a floating condition the plastics material with a specific weight that is greater than the specific weight of the fluid; the force of the thrusting action is limited to a value that is such as not to hinder the downward precipitation of the contaminating metal elements that have a further specific weight value that is greater than the aforesaid second value. The plastics material is retained inside the container for sufficient time to obtain a desired degree of purity and decontamination for the plastics material, after which it is evacuated by controlled overflow. The heavy contaminating material, in particular the metal elements that accumulate on the bottom, are periodically evacuated by a device of valve or pump type. The apparatus for implementing the aforesaid method is also disclosed.

10. 发明申请

US20190217505A1 METHOD AND APPARATUS FOR WASHING SHEETS OF PLASTIC MATERIAL 审中-公开
公开(公告)号：US20190217505A1
公开(公告)日：2019-07-18
申请号：US16307033
申请日：2017-06-05
申请人： PREVIERO N. S.R.L.
发明人： Flavio PREVIERO
IPC分类号： B29B17/02 , B08B3/04 , B03B5/38 , B03B11/00
摘要： A method and apparatus for washing sheets of plastic material originating from industrial and agricultural waste, for subsequent reuse thereof as a raw material. The sheets of plastic material, precut into soiled pieces of large dimensions, and a water flow are supplied to a washing tank containing a water bath; a screw stirrer generates intense stirring of the water bath and recirculation, inside the tank, of the soiled plastic pieces that causes the contaminating material to be detached and separated by sedimentation from the plastic pieces. The cleaned pieces of plastic material of large dimensions, devoid of contaminant, which float in the water bath are removed by dragging, in a floating condition, along a discharging channel by the combined action of a dragging device and of a water flow that exits the washing tank; the dragging device, consisting of an endless belt, extends from one side of the washing tank along the discharging channel, supported in a freely tiltable manner.

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