Ballast water treatment device

Patent metadata

Field	Value
Publication number	US-2016236122-A1
Application number	US-201315022646-A
Country	US
Kind code	A1
Filing date	Nov 7, 2013
Priority date	Nov 7, 2013
Publication date	Aug 18, 2016
Grant date	—

Abstract

A ballast water treatment device including a cylindrical filter ( 2 ) that is disposed in a casing ( 1 ) and filters and externally discharges ballast water having flowed inside, comprising: a filter rotating unit ( 3 ) that rotates the filter ( 2 ) around a shaft center of the filter ( 2 ); a suction nozzle ( 4 ) that is disposed on the primary side of the filter ( 2 ) and opens toward the inner circumferential surface of the filter ( 2 ); a waste rinsing water discharging unit ( 5 ) that externally discharges waste rinsing water sucked by the suction nozzle ( 4 ) from the casing ( 1 ); a high-pressure fluid jet nozzle ( 40 ) that is disposed on the secondary side of the filter ( 2 ), opens toward the outer circumferential surface of the filter ( 2 ), and jets high-pressure fluid toward the filter ( 2 ); and a high-pressure fluid supplying unit ( 41 ) that supplies high-pressure fluid to the high-pressure fluid jet nozzle ( 40 ). The ballast water treatment device enables rinsing of the filter ( 2 ) to be performed efficiently and effectively, and achieves a simple structure and facilitated manufacture and maintenance.

First claim

What is claimed is:

1 . A ballast water treatment device including a cylindrical filter that is disposed in a casing and filters and externally discharges ballast water having flowed inside, comprising:
a filter rotating unit that rotates the filter around a shaft center of the filter; a suction nozzle that is disposed on a primary side of the filter and opens toward an inner circumferential surface of the filter; a waste rinsing water discharging unit that externally discharges waste rinsing water sucked by the suction nozzle from the casing; a high-pressure fluid jet nozzle that is disposed on a secondary side of the filter, opens toward an outer circumferential surface of the filter, and jets high-pressure fluid toward the filter; a high-pressure fluid supplying unit that supplies high-pressure fluid to the high-pressure fluid jet nozzle; and a controller of controlling to stop ballast treatment operation and discharge water remained in the casing and to jet high-pressure fluid from the high-pressure fluid jet nozzle.

2 . (canceled)

3 . (canceled)

4 . (canceled)

5 . (canceled)

6 . (canceled)

7 . (canceled)

8 . (canceled)

9 . The ballast water treatment device according to claim 1 , comprising a pressure difference detecting unit that detects a pressure difference between primary and secondary sides of the filter,
wherein when the pressure difference between primary and secondary sides of the filter reaches a predetermined pressure, the controller stops ballast water treatment operation.

10 . The ballast water treatment device according to claim 1 , comprising a counter that counts number of operation of ballast water treatment operation,
wherein when the number of operations counted by the counter reaches a predetermined number, the controller stops ballast water treatment operation.

11 . The ballast water treatment device according to claim 1 , comprising a water quality measuring unit that measures water quality of treatment target water introduced into the casing,
wherein when the water quality measured by the water quality measuring unit reaches a predetermined water quality, the controller stops ballast water treatment operation.

12 . The ballast water treatment device according to claim 1 , comprising a time measuring unit that measures filtration treatment time,
wherein when the time measured by the time measuring unit reaches a predetermined time, the controller stops ballast water treatment operation.

13 . The ballast water treatment device according to claim 1 ,
wherein high-pressure fluid jetted from the high-pressure fluid jet nozzle is cleaning water, high-pressure air, or water vapor.

14 . The ballast water treatment device according to claim 9 ,
wherein high-pressure fluid jetted from the high-pressure fluid jet nozzle is cleaning water, high-pressure air, or water vapor.

15 . The ballast water treatment device according to claim 10 ,
wherein high-pressure fluid jetted from the high-pressure fluid jet nozzle is cleaning water, high-pressure air, or water vapor.

16 . The ballast water treatment device according to claim 1 ,
wherein jetting to an entire axial region of the filter is enabled by plurally using the high-pressure fluid jet nozzle.

17 . The ballast water treatment device according to claim 9 ,
wherein jetting to an entire axial region of the filter is enabled by plurally using the high-pressure fluid jet nozzle.

18 . The ballast water treatment device according to claim 1 , comprising a rinsing water jet nozzle that is disposed on a secondary side of the filter, opens toward an outer circumferential surface of the filter, and jets rinsing water toward the filter,
wherein a jetting pressure of high-pressure fluid by the high-pressure fluid jet nozzle is higher than a jetting pressure of rinsing water by the rinsing water jet nozzle.

19 . The ballast water treatment device according to claim 9 , comprising a rinsing water jet nozzle that is disposed on a secondary side of the filter, opens toward an outer circumferential surface of the filter, and jets rinsing water toward the filter,
wherein a jetting pressure of high-pressure fluid by the high-pressure fluid jet nozzle is higher than a jetting pressure of rinsing water by the rinsing water jet nozzle.

20 . A ballast water treatment device including a cylindrical filter that is disposed in a casing and filters and externally discharges ballast water having flowed inside, comprising:
a filter rotating unit that rotates the filter around a shaft center of the filter; a suction nozzle that is disposed on a primary side of the filter and opens toward an inner circumferential surface of the filter; a waste rinsing water discharging unit that externally discharges waste rinsing water sucked by the suction nozzle from the casing; a high-pressure fluid jet nozzle that is disposed on a secondary side of the filter, opens toward an outer circumferential surface of the filter, and jets high-pressure fluid toward the filter; and a high-pressure fluid supplying unit that supplies high-pressure fluid to the high-pressure fluid jet nozzle.

Assignees

• Miura Kogyo Kk

Inventors

• Tange Tomoaki
• Kawakami Akinori
• Shiraishi Hitoshi
• Zenman Yasutomo
• Saito Yasuhiko
• Ide Takamichi

Classifications

• B01D33/805

  by clearness or turbidity measuring · CPC title

• B01D33/463

  nozzles · CPC title

• C02F1/008

  Control or steering systems not provided for elsewhere in subclass C02F · CPC title

• C02F1/004

  using large scale industrial sized filters · CPC title

• B01D33/11

  arranged for outward flow filtration · CPC title