Method for treating liquid in a tank and liquid jetting device used in the method
First Claim
1. A method for treating liquid stored in a tank to remove precipitate deposited on a bottom of the tank, comprising the steps of:
- installing a plurality of liquid jetting devices, each having a nozzle swingable in a vertical direction and a horizontal direction, in a lower side wall of a tank at predetermined intervals so that liquid can be jetted from the nozzle into the tank;
providing each liquid jetting device with separate power sources for swinging the nozzle thereof in the vertical and horizontal directions;
jetting liquid from the nozzle of each said liquid jetting device at high pressure;
monitoring, from outside the tank, the jetting of the liquid from the nozzle of each said liquid jetting device; and
simultaneously controlling the swinging of the nozzles by the power sources from outside the tank to efficiently treat the liquid stored in the tank to remove the precipitate.
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Accused Products
Abstract
A method for treating liquid stored in a tank includes the steps of installing a liquid jetting device having a nozzle in a tank, providing the device with separate power sources for swinging the nozzle in the vertical and horizontal directions, jetting liquid from the nozzle at high pressure, monitoring the jetting of liquid from outside the tank, and controlling the power sources from outside the tank. The liquid jetting device used in the method includes a frame mounted on the tank, a casing provided to be swingable inside the frame, a first shaft extending laterally inside the casing, a jet nozzle for jetting liquid provided to be swingable by the first shaft in a direction perpendicular to the swinging direction of the casing, a first power source for swinging the casing, a second power source for swinging the jet nozzle in the direction perpendicular to the swinging direction of the casing, and means enabling the driving of the first and second power sources to be controlled from outside the tank.
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Citations
11 Claims
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1. A method for treating liquid stored in a tank to remove precipitate deposited on a bottom of the tank, comprising the steps of:
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installing a plurality of liquid jetting devices, each having a nozzle swingable in a vertical direction and a horizontal direction, in a lower side wall of a tank at predetermined intervals so that liquid can be jetted from the nozzle into the tank; providing each liquid jetting device with separate power sources for swinging the nozzle thereof in the vertical and horizontal directions; jetting liquid from the nozzle of each said liquid jetting device at high pressure; monitoring, from outside the tank, the jetting of the liquid from the nozzle of each said liquid jetting device; and simultaneously controlling the swinging of the nozzles by the power sources from outside the tank to efficiently treat the liquid stored in the tank to remove the precipitate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A liquid jetting device comprising:
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a plurality of frames mounted on a lower side wall of a tank to be cleaned at predetermined intervals; a casing mounted to be swingable inside each frame; a first shaft extending laterally inside the casing; a jet nozzle having a port for jetting liquid and connected with the first shaft so as to be swingable in a direction perpendicular to the swinging direction of the casing; a first power source supplied with driving fluid for swinging the casing; a second power source supplied with driving fluid for swinging the jet nozzle in the direction perpendicular to the swinging direction of the casing; and means enabling the driving of the first and second power sources to be controlled from outside the tank in accordance with a state of liquid jetted from the port of the jet nozzle. - View Dependent Claims (10, 11)
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Specification