Patents by Inventor Masaharu Miyawaki
Masaharu Miyawaki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8881648Abstract: A concentrator-integrated screw press includes: a continuous concentrator configured to continuously concentrate sludge and discharge the sludge as concentrated sludge, and including a discharge amount equalization unit configured to equalize an amount of concentrated sludge to be discharged per unit time; a positive displacement pump installed consecutively to the concentrator, and configured to continuously transport the concentrated sludge discharged from the concentrator; and a screw press installed consecutively to a discharge side of the positive displacement pump, and configured to compress and dewater the concentrated sludge.Type: GrantFiled: February 1, 2010Date of Patent: November 11, 2014Assignee: Ishigaki Company LimitedInventors: Manabu Yamashita, Masaharu Miyawaki, Masayoshi Katayama
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Publication number: 20110297016Abstract: A concentrator-integrated screw press includes: a continuous concentrator configured to continuously concentrate sludge and discharge the sludge as concentrated sludge, and including a discharge amount equalization unit configured to equalize an amount of concentrated sludge to be discharged per unit time; a positive displacement pump installed consecutively to the concentrator, and configured to continuously transport the concentrated sludge discharged from the concentrator; and a screw press installed consecutively to a discharge side of the positive displacement pump, and configured to compress and dewater the concentrated sludge.Type: ApplicationFiled: February 1, 2010Publication date: December 8, 2011Applicant: ISHIGAKI COMPANY LIMITEDInventors: Manabu Yamashita, Masaharu Miyawaki, Masayoshi Katayama
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Patent number: 7906029Abstract: A differential rate rotary thickener; a power detector which is disposed in a sludge receiver tank for thickened sludge thickened in the differential rate rotary thickener; a discriminator which receives an electric signal for a thickened sludge concentration detected by the power detector and which calculates and discriminate the data; a first controller which receives an instruction signal being a discriminated result in the discriminator and which operates an outer cylinder driving machine and a screw driving machine; a ratio setter which receives a discriminated signal of the discriminator and which increases or decreases a chemical feed rate of flocculant stepwise; and a second controller which receives an instruction signal from the ratio setter and which operates a flocculant-feeding pump are provided. Thickening of sludge is performed by controlling the chemical feed rate, a rotational speed of a screw, and a rotational speed of an outer cylinder screen.Type: GrantFiled: February 25, 2010Date of Patent: March 15, 2011Assignee: Ishigaki Company LimitedInventors: Kenzou Sugaya, Hiroichi Kawasaki, Masayoshi Katayama, Manabu Yamashita, Masaharu Miyawaki
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Patent number: 7828961Abstract: A differential rate rotary thickener; a power detector which is disposed in a sludge receiver tank for thickened sludge thickened in the differential rate rotary thickener; a discriminator which receives an electric signal for a thickened sludge concentration (X) detected by the power detector and which calculates and discriminate the data; a first controller which receives an instruction signal being a discriminated result in the discriminator and which operates an outer cylinder driving machine and a screw driving machine; a ratio setter which receives a discriminated signal of the discriminator and which increases or decreases a chemical feed rate (?) of flocculant stepwise; and a second controller which receives an instruction signal from the ratio setter and which operates a flocculant-feeding pump are provided. Thickening of sludge is performed by controlling the chemical feed rate (?), a rotational speed (S) of a screw, and a rotational speed (C) of an outer cylinder screen.Type: GrantFiled: July 20, 2005Date of Patent: November 9, 2010Assignee: Ishigaki Company LimitedInventors: Kenzou Sugaya, Hiroichi Kawasaki, Masayoshi Katayama, Manabu Yamashita, Masaharu Miyawaki
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Publication number: 20100213137Abstract: [Solving Means] A differential rate rotary thickener; a power detector which is disposed in a sludge receiver tank for thickened sludge thickened in the differential rate rotary thickener; a discriminator which receives an electric signal for a thickened sludge concentration detected by the power detector and which calculates and discriminate the data; a first controller which receives an instruction signal being a discriminated result in the discriminator and which operates an outer cylinder driving machine and a screw driving machine; a ratio setter which receives a discriminated signal of the discriminator and which increases or decreases a chemical feed rate of flocculant stepwise; and a second controller which receives an instruction signal from the ratio setter and which operates a flocculant-feeding pump are provided. Thickening of sludge is performed by controlling the chemical feed rate, a rotational speed of a screw, and a rotational speed of an outer cylinder screen.Type: ApplicationFiled: February 25, 2010Publication date: August 26, 2010Applicant: ISHIGAKI COMPANY LIMITEDInventors: Kenzou Sugaya, Hiroichi Kawasaki, Masayoshi Katayama, Manabu Yamashita, Masaharu Miyawaki
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Publication number: 20090057235Abstract: A differential rate rotary thickener; a power detector which is disposed in a sludge receiver tank for thickened sludge thickened in the differential rate rotary thickener; a discriminator which receives an electric signal for a thickened sludge concentration (X) detected by the power detector and which calculates and discriminate the data; a first controller which receives an instruction signal being a discriminated result in the discriminator and which operates an outer cylinder driving machine and a screw driving machine; a ratio setter which receives a discriminated signal of the discriminator and which increases or decreases a chemical feed rate (?) of flocculant stepwise; and a second controller which receives an instruction signal from the ratio setter and which operates a flocculant-feeding pump are provided. Thickening of sludge is performed by controlling the chemical feed rate (?), a rotational speed (S) of a screw, and a rotational speed (C) of an outer cylinder screen.Type: ApplicationFiled: July 20, 2005Publication date: March 5, 2009Applicant: ISHIGAKI COMPANY LIMITEDInventors: Kenzou Sugaya, Hiroichi Kawasaki, Masayoshi Katayama, Manabu Yamashita, Masaharu Miyawaki