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公开(公告)号：DE3475880D1
公开(公告)日：1989-02-09
申请号：DE3475880
申请日：1984-08-27
Applicant: TORAY INDUSTRIES
Inventor： NAGAYAMA TAKASHI , OTANI MITSUNOBU , DATE TAMOTSU
Abstract: PCT No. PCT/JP84/00410 Sec. 371 Date Apr. 25, 1986 Sec. 102(e) Date Apr. 25, 1986 PCT Filed Aug. 27, 1984 PCT Pub. No. WO86/01429 PCT Pub. Date Mar. 13, 1986.The device according to the present invention comprises a unidirectionally circulating endless filter cloth with a napped filter layer on the surface, a solid-liquid mixture supply device installed on the front side of filter cloth, a depressurizing suction device installed on the backside of the filter cloth, a non-filterable content withdrawing device installed downstream of the solid-liquid mixture supply device and the depressurizing suction device, and a filter cloth wash device installed downstream of the non-filterable content withdrawing device in the running direction of the filter cloth and located between the non-filterable content withdrawing device and the solid-liquid mixture supply device or the depressurizing suction device. The depressurizing suction device is equipped with a depressurized suction port splaying in the running direction of said filter cloth. The depressurized suction port is equipped with at least one group of filter cloth guide rolls on the right and left sides in the running direction of filter cloth. The filter cloth guide rolls which constitute the right of left group spread outwardly in the running direction of filter cloth. The present device can minimize damage to the filter cloth by the depressurizing suction device without decreasing the solid-liquid separation performance and thus drastically prolong the service life of the filter cloth.
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公开(公告)号：CA1330051C
公开(公告)日：1994-06-07
申请号：CA575956
申请日：1988-08-29
Applicant: TORAY INDUSTRIES
Inventor： OTANI MITSUNOBU , DATE TAMOTSU , NAGAYAMA TAKASHI , KOUZUKI TSUNEO
IPC: B01D33/067 , B01D33/48
Abstract: A solid-liquid separation apparatus wherein a solid-liquid mixture is introduced into a rotary filtration drum having filter cloth mounted thereon and is allowed to pass through the filter cloth to thereby separate the solids contained therein. The filter cloth has one surface facing the interior of the drum and covered with a napped filter layer which is formed by a multiplicity of fibers having a diameter of 0.1 to 10 .mu.m. The filter cloth preferably has an elongation percentage of not smaller than 1.0%. A base material of the filter cloth includes a weft extending along the rotational axis of the drum and a warp extending in the circumferential direction of the drum. The fibers of the napped filter layer are formed by napping chiefly the weft in the direction of the warp. A first sprayer is arranged in a facing relation to the outer peripheral surface of the filter cloth, for flushing a collecting liquid to collect the solids arrested by the filter cloth, and a collecting hopper is arranged inside the drum, for collecting the solids washed off by the collecting liquid. A second sprayer is arranged in a facing relation to the inner peripheral surface of the filter cloth, for flushing a washing liquid to wash off the solids attached to the fibers of the napped filter layer. Further, a third sprayer is arranged outside the drum for washing the filter cloth with chemicals, and a baffle plate is arranged inside the filtration drum.
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公开(公告)号：AU600166B2
公开(公告)日：1990-08-02
申请号：AU2168688
申请日：1988-08-30
Applicant: TORAY INDUSTRIES
Inventor： OTANI MITSUNOBU , DATE TAMOTSU , NAGAYAMA TAKASHI , KOUZUKI TSUNEO
IPC: B01D33/067 , B01D33/16
Abstract: A solid-liquid separation apparatus wherein a solid-liquid mixture is introduced into a rotary filtration drum having filter cloth mounted thereon and is allowed to pass through the filter cloth to thereby separate the solids contained therein. The filter cloth has one surface facing the interior of the drum and covered with a napped filter layer which is formed by a multiplicity of fibers having a diameter of 0.1. to 10 mu m. The filter cloth preferably has an elongation percentage of not smaller than 1.0%. A base material of the filter cloth includes a weft extending along the rotational axis of the drum and a warp extending in the circumferential direction of the drum. The fibers of the napped filter layer are formed by napping chiefly the weft in the direction of the warp. A first sprayer is arranged in a facing relation to the outer peripheral surface of the filter cloth, for flushing a collecting liquid to collect the solids arrested by the filter cloth, and a collecting hopper is arranged inside the drum, for collecting the solids washed off by the collecting liquid. A second sprayer is arranged in a facing relation to the inner peripheral surface of the filter cloth, for flushing a washing liquid to wash off the solids attached to the fibers pf the napped filter layer. Further, a third sprayer is arranged outside the drum for washing the filter cloth with chemicals, and a baffle plate is arranged inside the filtration drum.
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公开(公告)号：AU2168688A
公开(公告)日：1990-04-26
申请号：AU2168688
申请日：1988-08-30
Applicant: TORAY INDUSTRIES
Inventor： OTANI MITSUNOBU , DATE TAMOTSU , NAGAYAMA TAKASHI , KOUZUKI TSUNEO
IPC: B01D33/067 , B01D33/16
Abstract: A solid-liquid separation apparatus wherein a solid-liquid mixture is introduced into a rotary filtration drum having filter cloth mounted thereon and is allowed to pass through the filter cloth to thereby separate the solids contained therein. The filter cloth has one surface facing the interior of the drum and covered with a napped filter layer which is formed by a multiplicity of fibers having a diameter of 0.1. to 10 mu m. The filter cloth preferably has an elongation percentage of not smaller than 1.0%. A base material of the filter cloth includes a weft extending along the rotational axis of the drum and a warp extending in the circumferential direction of the drum. The fibers of the napped filter layer are formed by napping chiefly the weft in the direction of the warp. A first sprayer is arranged in a facing relation to the outer peripheral surface of the filter cloth, for flushing a collecting liquid to collect the solids arrested by the filter cloth, and a collecting hopper is arranged inside the drum, for collecting the solids washed off by the collecting liquid. A second sprayer is arranged in a facing relation to the inner peripheral surface of the filter cloth, for flushing a washing liquid to wash off the solids attached to the fibers pf the napped filter layer. Further, a third sprayer is arranged outside the drum for washing the filter cloth with chemicals, and a baffle plate is arranged inside the filtration drum.
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公开(公告)号：DE3850254T2
公开(公告)日：1994-09-29
申请号：DE3850254
申请日：1988-08-29
Applicant: TORAY INDUSTRIES
Inventor： OTANI MITSUNOBU , DATE TAMOTSU , NAGAYAMA TAKASHI , KOUZUKI TSUNEO
IPC: B01D33/067 , B01D33/06 , B01D33/58
Abstract: A solid-liquid separation apparatus wherein a solid-liquid mixture is introduced into a rotary filtration drum having filter cloth mounted thereon and is allowed to pass through the filter cloth to thereby separate the solids contained therein. The filter cloth has one surface facing the interior of the drum and covered with a napped filter layer which is formed by a multiplicity of fibers having a diameter of 0.1. to 10 mu m. The filter cloth preferably has an elongation percentage of not smaller than 1.0%. A base material of the filter cloth includes a weft extending along the rotational axis of the drum and a warp extending in the circumferential direction of the drum. The fibers of the napped filter layer are formed by napping chiefly the weft in the direction of the warp. A first sprayer is arranged in a facing relation to the outer peripheral surface of the filter cloth, for flushing a collecting liquid to collect the solids arrested by the filter cloth, and a collecting hopper is arranged inside the drum, for collecting the solids washed off by the collecting liquid. A second sprayer is arranged in a facing relation to the inner peripheral surface of the filter cloth, for flushing a washing liquid to wash off the solids attached to the fibers pf the napped filter layer. Further, a third sprayer is arranged outside the drum for washing the filter cloth with chemicals, and a baffle plate is arranged inside the filtration drum.
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Patent Agency Ranking
公开(公告)号：DE3850254D1
公开(公告)日：1994-07-21
申请号：DE3850254
申请日：1988-08-29
Applicant: TORAY INDUSTRIES
Inventor： OTANI MITSUNOBU , DATE TAMOTSU , NAGAYAMA TAKASHI , KOUZUKI TSUNEO
IPC: B01D33/067 , B01D33/06 , B01D33/58
Abstract: A solid-liquid separation apparatus wherein a solid-liquid mixture is introduced into a rotary filtration drum having filter cloth mounted thereon and is allowed to pass through the filter cloth to thereby separate the solids contained therein. The filter cloth has one surface facing the interior of the drum and covered with a napped filter layer which is formed by a multiplicity of fibers having a diameter of 0.1. to 10 mu m. The filter cloth preferably has an elongation percentage of not smaller than 1.0%. A base material of the filter cloth includes a weft extending along the rotational axis of the drum and a warp extending in the circumferential direction of the drum. The fibers of the napped filter layer are formed by napping chiefly the weft in the direction of the warp. A first sprayer is arranged in a facing relation to the outer peripheral surface of the filter cloth, for flushing a collecting liquid to collect the solids arrested by the filter cloth, and a collecting hopper is arranged inside the drum, for collecting the solids washed off by the collecting liquid. A second sprayer is arranged in a facing relation to the inner peripheral surface of the filter cloth, for flushing a washing liquid to wash off the solids attached to the fibers pf the napped filter layer. Further, a third sprayer is arranged outside the drum for washing the filter cloth with chemicals, and a baffle plate is arranged inside the filtration drum.
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公开(公告)号：JPH0952003A
公开(公告)日：1997-02-25
申请号：JP23074795
申请日：1995-08-15
Applicant: TORAY INDUSTRIES
Inventor： SENDA TERUO , NAKAJI KENJI , DATE TAMOTSU
Abstract: PROBLEM TO BE SOLVED: To efficiently subject a large quantity of raw water to solid-liquid separation treatment in low cost by suppressing the fine pulverization of a solid component in raw water by performing at least the introduction of raw water into a filter drum from a raw water basin by the natural flow down based on head difference. SOLUTION: The raw water from an upper basin 1 is introduced into the rotary filter drum 31 of a filter drum apparatus 3 through an upper basin outflow pipe 12, a flocculation reaction tank 2 and the outflow port 26 of the tank 2. In this purifying process, the introduction of the raw water at least up to this stage is performed by the natural flow down based on head difference ΔH3 . Since no pump is used in the sending of raw water up to this stage, shearing force is not mechanically applied to raw water and it is prevented that a solid component is finely pulverized by shearing force or the solid component flocculated by the charging of a flocculant is finely pulverized. In this state, raw water is introduced into the filter drum apparatus 3.
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公开(公告)号：JPH07136418A
公开(公告)日：1995-05-30
申请号：JP28242393
申请日：1993-11-11
Applicant: TORAY INDUSTRIES
Inventor： DATE TAMOTSU , YASUDA HARUHIKO , SENDA TERUO
Abstract: PURPOSE:To provide a rotary drum type solid-liquid separation apparatus capable of efficiently washing filter cloth and capable of reducing the abrasion of the filter cloth. CONSTITUTION:A rotary drum type solid-liquid separation apparatus is equipped with a filter drum 26 the surface of which is covered with filter cloth 42, the washing spray 80 arranged outside the filter drum 26 and injecting filtered water to the outer surface of the filter cloth 42 as washing water and the backup spray arranged in opposed relation to the washing spray 80 so as to hold the filter cloth 42 in the filter drum 26 along with the spray 80 and injecting recovered water to the inner surface of the filter cloth 42 as backup water to prevent the slackening of the filter cloth 42.
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公开(公告)号：JPH08309111A
公开(公告)日：1996-11-26
申请号：JP14545495
申请日：1995-05-18
Applicant: TORAY INDUSTRIES
Inventor： SENDA TERUO , FUJITANI KENICHI , DATE TAMOTSU
Abstract: PURPOSE: To uniformly place a muddy solid-liquid mixture flowing down from a flowing-down plate on filter cloth and to smoothly progress solid-liquid separating treatment by forming the flowing-down plate into descending slope toward the circumferential direction of the filter cloth and also downward curving the flowing-down plate and forming a solid-liquid guiding face projected upward in the width direction of the filter cloth. CONSTITUTION: In a flowing-down plate 42, a sludge flowing part 51 continues in such a shape that it is connected to the tip of a narrow sludge introduction part 50. The flowing face of the sludge flowing part 51 is formed into a sectoral shape widened toward the traveling direction of filter cloth 2. The whole is formed into descending slope along the traveling direction of the filter cloth 2 and also the center is high along the width direction of the filter cloth 2 and the sludge flowing part is formed into descending slope toward both sides. Therefore, sludge supplied to the sludge introduction part 50 flows down on the flowing face of the sludge flowing part 51 along two directions of the traveling direction and th width direction of the filter cloth 2 and is fully broadened and then flows down on the filter cloth 2. As a result, sludge is uniformly placed on the filter cloth 2.
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公开(公告)号：JPH08155493A
公开(公告)日：1996-06-18
申请号：JP30363194
申请日：1994-12-07
Applicant: TORAY INDUSTRIES
Inventor： SENDA TERUO , DATE TAMOTSU , YASUDA HARUHIKO
Abstract: PURPOSE: To control the generation of trihalogenomethane by removing organic suspended substance components principally of plankton in raw water by filtering the water before oxidation treatment, in raw water in which ammonium is removed by oxidation treatment with a halogen type oxidizing agent. CONSTITUTION: In the treatment of raw water 30 of lakes and marshes, pools, etc., the water 30 is drawn up with a pump 31, and large refuse is removed by a screen 32. Next, in a coagulation treatment process A, a coagulant such as polyaluminum chloride is added into the water 30 for the coagulation treatment, and organic suspended substance components principally of plankton are removed in the next filtration treatment process B. It is preferable to remove 50wt.% or more of the organic suspended substance components 8μm or more in particle size. In the following oxidation treatment process C, ammonium compounds in the water 30 are removed by oxidation treatment with a halogen type oxidizing agent. Thereafter, the filtrate is purified through conventional processes of coagulation D, separation E, and sterilization F.
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