公开(公告)号：JPH07256210A

公开(公告)日：1995-10-09

申请号：JP7430094

申请日：1994-03-18

Applicant: AGENCY IND SCIENCE TECHN

Inventor： ARAI SATOSHI ,  ITO SHINICHI ,  SAKAMOTO HIROSHI ,  OOI HIDEFUSHI ,  YOTSUMOTO KOKI

IPC: B09B5/00 ,  B03B9/06 ,  B07B4/08 ,  B07B7/12 ,  B07B9/02 ,  B07B13/04

Abstract: PURPOSE:To obtain a current selective technology by which needle-like materials such as electric wire found in the crushed products of large industrial wastes are easily fractionated from non-needle-like materials efficiently using the difference in shape of the needle-like materials. CONSTITUTION:A mixture of a needle-like material and a non-needle-like material is supplied to a fluid fractionating tank 1, and turbulent air flow is supplied from below through a gradient mesh plate 2 arranged at the bottom to cause a material to be fractionated to flow. In this case, the needle-like material drops due to its gravitational stalling in a longitudinal direction and passes through a mesh plate 2 to be recovered into a needle-like material recovery tank 3 below the mesh plate. The non-needle-like material flows down along the gradient mesh plate for separation.

公开(公告)号：JPH0975851A

公开(公告)日：1997-03-25

申请号：JP24137195

申请日：1995-09-20

Applicant: AGENCY IND SCIENCE TECHN

Inventor： ARAI SATOSHI ,  ITO SHINICHI ,  SAKAMOTO HIROSHI ,  OOI HIDEFUSHI ,  YOTSUMOTO KOKI

IPC: B07B4/08 ,  B07B11/02

Abstract: PROBLEM TO BE SOLVED: To provide a method for pneumatic sorting of solid which can sort needle-shaped materials and non-needle-shaped materials in a crushed mixture efficiently and precisely, and an apparatus for the method. SOLUTION: An air current which ascends in a pneumatic sorting column 1 is supplied from the air current supply port 30 of the column 1, a crushed mixture of needle-shaped materials and non-needle-shaped materials is supplied from a supply port 22, and the mixture is fluidized in a fluidizing region 27 between an upper part narrow cylinder 21 and a mesh plate 25. In this region 27, the needle-shaped materials tend to be decelerated to fall with the longitudinal direction directed to the gravity direction so that they pass through the mesh plate 25 to be recovered below the column 1. The crushed mixture which repeats floating and dropping in the fluidizing region 27 is discharged through the discharge opening in the sidewall of the column 1. The lightweight materials in the crushed mixture are floated to the upper part of the column 1 to be discharged.

公开(公告)号：JPH08187462A

公开(公告)日：1996-07-23

申请号：JP184795

申请日：1995-01-10

Applicant: AGENCY IND SCIENCE TECHN

Inventor： ARAI SATOSHI ,  ITO SHINICHI ,  SAKAMOTO HIROSHI ,  OOI HIDEFUSHI ,  YOTSUMOTO KOKI

IPC: B07B4/02

Abstract: PURPOSE: To enhance the recovery efficiency of intermediate floating matter, in an apparatus selecting an objective article from urban waste refuse or the like by utilizing a shape, a size or density difference, by arranging a slide cylinder forming a floating matter recovering opening to a cylinder corresponding to the solid floating position at the intermediate position of an air sorting cylinder. CONSTITUTION: When air is supplied to the lower part of an air sorting cylinder from the blower of an air supply source and a solid to be sorted is gradually allowed to fall into the air sorting cylinder from the hopper connected on the way of the air sorting cylinder, the solid is dispersed in an air stream flowing in from below and the solid large in buoyancy reaches the lower cylinder 33 of an intermediate floating matter recovery cylinder 2 through a truncated cone cylinder 16. At the time of the recovery of intermediate floating matter, the slide cylinder 35 in the intermediate floating matter recovery cylinder 2 is moved upwardly to form a large opening with respect to the lower cylinder 33. By this constitution, the velocity of the air stream in a recovery cylinder 40 is lowered and the stagnated intermediate floating matter is stalled to be rapidly led out of an intermediate floating matter lead-out cylinder 41 to be recovered.

公开(公告)号：JPH07204584A

公开(公告)日：1995-08-08

申请号：JP1789894

申请日：1994-01-18

Applicant: AGENCY IND SCIENCE TECHN

Inventor： ARAI SATOSHI ,  ITO SHINICHI ,  SAKAMOTO HIROSHI ,  OOI HIDEFUSHI ,  YOTSUMOTO KOKI

IPC: B07B4/02 ,  B07B7/01

Abstract: PURPOSE:To sort and separate the object from waste or various solids equal to it by utilizing the shapes, sizes and density difference, etc., and using air as a selective medium. CONSTITUTION:The solid to be sorted and separated is supplied to a pneumatic separation cylinder 1 successively provided plural cylinders 11-14 having different cross-sections or these cylinders with a truncated corn cylinder 15 in a column form, and also a fixed flow rate of air is supplied from the lower part of the pneumatic separation cylinder. In the pneumatic separation cylinder 1, difference of floatage of various solids by an air current speed varying in accordance with the cross-section and the speed distribution is generated, and the solids are separated based on the difference of the floating positions where these solids occupy in the pneumatic separation cylinder.

公开(公告)号：JPH03154660A

公开(公告)日：1991-07-02

申请号：JP29537389

申请日：1989-11-14

Applicant: AGENCY IND SCIENCE TECHN

Inventor： ARAI SATOSHI ,  KAMEGAYA HIROSHI ,  OOI HIDEFUSHI

IPC: B03C7/00

Abstract: PURPOSE:To efficiently separate dielectric particles by causing specific solid particles to move through a hole into other liquid chamber through the difference of electric forces exerted on solid particles due to differences in dielectric constant thereof in a heterogeneous electric field. CONSTITUTION:Solid particles containing particles to be separated are dispersed into dielectric liquid to be filled or supplied into a liquid chamber 2 or a liquid chamber 3 which are separated from each other by a partition wall 4. A high voltage is applied between electrodes 14 and 15 provided respectively in the chambers 2 and 3, while the chamber 2 communicates with the chamber 3 through a hole 5 provided in the wall 4, whereby a heterogeneous electric field is formed in the dielectric liquid in both the chambers through the hole 5. In the heterogeneous electric field, electric forces exerted on the solid particles differ due to the difference in intrinsic dielectric constant of solid particles, so that a part of the solid particles are transferred to the other liquid chamber through the hole 5 to effect desired separation of solid particles. As a result, dielectric particles can be separated efficiently.