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公开(公告)号：JPH11262691A
公开(公告)日：1999-09-28
申请号：JP2085699
申请日：1999-01-29
Applicant: BELOIT TECHNOLOGIES INC
Inventor： GRIMES DAVID B
Abstract: PROBLEM TO BE SOLVED: To provide a hydrocyclone for separating and adjusting pulp for paper production. SOLUTION: When a raw material contg. fiber is fed into a hydrocyclone, a quasi-laminar flow is generated in a hydrocyclone housing with a wall surface structure. A piezoelectric vibrator 50 introduces ultrasonic waves into the quasi- laminar flow, then a large volume of heavier particles are separated from allowable fiber, and a differentiation phenomenon can be enhanced.
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公开(公告)号：CA2234238C
公开(公告)日：2001-01-30
申请号：CA2234238
申请日：1996-09-19
Applicant: BELOIT TECHNOLOGIES INC
Inventor： GRIMES DAVID B
Abstract: A cleaner receives input pulp stock in an inverted conical chamber (26), which acts as a hydrocyclone to direct heavyweight reject flows outwardly, lightweight reject flows into a discharging vortex chamber and accept flows in between to a vortex finder for removal. The cleaner body has an inverted hydrocyclone chamber (34) formed beneath the inverted cone and a ceramic splitter (36) below which skims off the heavyweight reject flow from the accept flow, and diverts it into the inverted hydrocyclone chamber (34). A portion of the diverted heavyweight reject flow is removed through a toroidal heavyweight rejects relief outlet (47), but the larger fraction of the heavyweight reject flow is recirculated within the inverted hydrocyclone chamber. Because the chamber narrows as it extends upwardly, the flow increases in speed and angular velocity to such an extent that the flow within the inverted hydrocyclone chamber matches the flow passing by the chamber, thereby preventing turbulent mixing.
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公开(公告)号：CA2260550A1
公开(公告)日：1999-07-30
申请号：CA2260550
申请日：1999-01-28
Applicant: BELOIT TECHNOLOGIES INC
Inventor： GRIMES DAVID B
Abstract: Fiber-containing stock is fed into a hydrocyclone with a wall structure which generates quasi-laminar flow within the hydrocyclone housing. A piezoelectric oscillator introduces ultrasonic waves into the quasi-laminar flow to achieve high volume separation of heavyweight particles from the acceptable fibers with improved differentiation.
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公开(公告)号：NZ320942A
公开(公告)日：1999-04-29
申请号：NZ32094296
申请日：1996-09-19
Applicant: BELOIT TECHNOLOGIES INC
Inventor： GRIMES DAVID B
Abstract: A cleaner receives input pulp stock in an inverted conical chamber, which acts as a hydrocyclone to direct heavyweight reject flows outwardly, lightweight reject flows into a discharging vortex chamber and accept flows in between to a vortex finder for removal. The cleaner body has an inverted hydrocyclone chamber formed beneath the inverted cone and a ceramic splitter below which skims off the heavyweight reject flow from the accept flow, and diverts it into the inverted hydrocyclone chamber. A portion of the diverted heavyweight reject flow is removed through a toroidal heavyweight rejects relief outlet, but the larger fraction of the heavyweight reject flow is recirculated within the inverted hydrocyclone chamber. Because the chamber narrows as it extends upwardly, the flow increases in speed and angular velocity to such an extent that the flow within the inverted hydrocyclone chamber matches the flow passing by the chamber, thereby preventing turbulent mixing.
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公开(公告)号：CA2332036A1
公开(公告)日：2000-05-25
申请号：CA2332036
申请日：1999-11-10
Applicant: BELOIT TECHNOLOGIES INC
Inventor： GRIMES DAVID B
Abstract: The conventional infeed head (22) and inverted cone (44) of a Uniflow cleane r are connected by a generally cylindrical channel dam segment (38) which has an annular inwardly extending channel dam (42). The narrow end of the inverted cone (44) is connected to a separation body (50) through which a vortex find er (60) extends into the inverted cone (44). The light reject particles (32) ar e removed from the input flow (26) through the vortex finder (60). Accepts (28 ) and heavy rejects (30) flow into an inverted hydrocyclone chamber (72) withi n the separation body (50) defined between an outer cylindrical ring (62) and an inner cylindrical ring (64) and the vortex finder (60). An annular heavy rejects chamber (66) is defined exterior to the outer ring (62), and fluid i s drawn off tangentially therefrom. Accepts (28) flow downwardly through the inner ring (64) into a bowl (56) beneath the separation body (50), where the y are removed from an accepts outlet (82). The cylindrical or concave surfaces of the separation body (50) are economical to manufacture.
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Patent Agency Ranking
公开(公告)号：NO981482A
公开(公告)日：1998-04-01
申请号：NO981482
申请日：1998-04-01
Applicant: BELOIT TECHNOLOGIES INC
Inventor： GRIMES DAVID B
CPC classification number: B04C5/08 , B04C3/06 , B04C5/085 , B04C2005/133 , D21D5/24
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公开(公告)号：ZA968361B
公开(公告)日：1997-05-02
申请号：ZA968361
申请日：1996-10-04
Applicant: BELOIT TECHNOLOGIES INC
Inventor： GRIMES DAVID B
Abstract: A cleaner receives input pulp stock in an inverted conical chamber, which acts as a hydrocyclone to direct heavyweight reject flows outwardly, lightweight reject flows into a discharging vortex chamber and accept flows in between to a vortex finder for removal. The cleaner body has an inverted hydrocyclone chamber formed beneath the inverted cone and a ceramic splitter below which skims off the heavyweight reject flow from the accept flow, and diverts it into the inverted hydrocyclone chamber. A portion of the diverted heavyweight reject flow is removed through a toroidal heavyweight rejects relief outlet, but the larger fraction of the heavyweight reject flow is recirculated within the inverted hydrocyclone chamber. Because the chamber narrows as it extends upwardly, the flow increases in speed and angular velocity to such an extent that the flow within the inverted hydrocyclone chamber matches the flow passing by the chamber, thereby preventing turbulent mixing.
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公开(公告)号：CA2234238A1
公开(公告)日：1997-04-10
申请号：CA2234238
申请日：1996-09-19
Applicant: BELOIT TECHNOLOGIES INC
Inventor： GRIMES DAVID B
Abstract: A cleaner receives input pulp stock in an inverted conical chamber (26), whi ch acts as a hydrocyclone to direct heavyweight reject flows outwardly, lightweight reject flows into a discharging vortex chamber and accept flows in between to a vortex finder for removal. The cleaner body has an inverted hydrocyclone chamber (34) formed beneath the inverted cone and a ceramic splitter (36) below which skims off the heavyweight reject flow from the accept flow, and diverts it into the inverted hydrocyclone chamber (34). A portion of the diverted heavyweight reject flow is removed through a toroida l heavyweight rejects relief outlet (47), but the larger fraction of the heavyweight reject flow is recirculated within the inverted hydrocyclone chamber. Because the chamber narrows as it extends upwardly, the flow increases in speed and angular velocity to such an extent that the flow with in the inverted hydrocyclone chamber matches the flow passing by the chamber, thereby preventing turbulent mixing.
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公开(公告)号：BR9809764A
公开(公告)日：2000-07-04
申请号：BR9809764
申请日：1998-03-17
Applicant: BELOIT TECHNOLOGIES INC
Inventor： GRIMES DAVID B
Abstract: The centrifugal cleaner of this invention is of the type having an inverted cylindrical cone, with a tangential inlet at the top and an outlet at the bottom. The improvement consists of placing a ring or flow smoothing means on the inside surface of the cylindrical cone about one-half the diameter of the base of the cone down from the inlet. The ring forces the stock injected into the centrifugal cleaner to flow towards the axis of the cone away from the inside cone wall. Once the stock passes over the dam it once again flows to the inner wall of the cone. The stock, in being forced to flow over the ring, is made uniform, eliminating spiraling of the flow which has been found to decrease the efficiency with which separation within the cleaner is accomplished.
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公开(公告)号：AU1817900A
公开(公告)日：2000-06-05
申请号：AU1817900
申请日：1999-11-10
Applicant: BELOIT TECHNOLOGIES INC
Inventor： GRIMES DAVID B
Abstract: The conventional infeed head and inverted cone of a Uniflow cleaner are connected by a generally cylindrical channel dam segment which has an annular inwardly extending channel dam. The narrow end of the inverted cone is connected to a separation body through which a vortex finder extends into the inverted cone. The light reject particles are removed from the input flow through the vortex finder. Accepts and heavy rejects flow into an inverted hydrocyclone chamber within the separation body defined between an outer cylindrical ring and an inner cylindrical ring and the vortex finder. An annular heavy rejects chamber is defined exterior to the outer ring, and fluid is drawn off tangentially therefrom. Accepts flow downwardly though the inner ring into a bowl beneath the separation body, where they are removed from an accepts outlet. The cylindrical or concave surfaces of the separation body are economical to manufacture.
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