专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2002138982A HORIZONTAL SHAFT PUMP 失效
公开(公告)号：JP2002138982A
公开(公告)日：2002-05-17
申请号：JP2000337763
申请日：2000-11-06
申请人： DENGYOSHA MACH WORKS , KYUSHU REGIONAL BUREAU MINISTR , KASEN PUMP SHISETSU GIJUTSU KY
发明人： KAGE HIDEKI , MINAMISHIMA TETSUO , OMURA TAKEYUKI , OTSUKA SHOJI , NEGISHI MICHIAKI , YAMAMOTO TOSHIAKI , FUKADA HIROSHI
IPC分类号： F04D15/00 , F04D9/04 , F04D29/70
摘要： PROBLEM TO BE SOLVED: To provide a horizontal shaft pump capable of removing water from a water filling device filling water in a pump casing 10 using a dry vacuum pump 70. SOLUTION: An opening part 38 is provided in an upper part of the pump casing 10 or a suction elbow 12 or a loose short pipe 20, and the opening part 38 is arranged and communicated with a vacuum tank 60 through a water filling detection means 40 and a vacuum shut-off valve 42 and the vacuum tank 60 is arranged and communicated with the dry vacuum pump 70 to constitute the water filling device. When full filling of water is detected by the water filling detection means 40, the vacuum shut-off valve 42 is closed by a control means 52 and the operation of the dry vacuum pump 70 is stopped. The vacuum tank 60 has a large cross sectional area when compared with a cross sectional area of a flow passage in a pipe. Moreover, a filter 64 preventing passing of dust is provided at a position in an upper part in the vacuum tank 60 where gas separated from liquid passes.

2. 发明专利

JPH10169589A PULL-OUT TYPE SUBMERGIBLE MOTOR PUMP 失效
公开(公告)号：JPH10169589A
公开(公告)日：1998-06-23
申请号：JP35207496
申请日：1996-12-11
申请人： DENGYOSHA MACH WORKS
发明人： FUKADA HIROSHI
IPC分类号： F04D15/00 , F04D7/02
摘要： PROBLEM TO BE SOLVED: To suppress generation of vibration or the like by bringing air/water operation close to idle operation by sucking a large amount of atmospheric air in a pump at a low water level. SOLUTION: Suction pipes 34 are connected to the lower end of a column pipe 30. One end of an intake pipe 38 is communicated with an intake hole 36 drilled at the suction pipe 34, and the other end is opened to the atmospheric air through an intake valve 40. A pump unit 50 consists of a submergible motor 52, an impeller 54, and an impeller casing 56. The lower part of a pump unit 50 is fixed by locking a tapered locking part formed at the impeller casing 56 with a tapered seat part formed at the column pipe 30. The upper part of the pump unit 50 is fixed by connecting the upper end of a cable protective pipe 64 fixed at the upper end surface of the pump unit 50 to a column pipe top lid 82. An intake valve control means 42 opens and closes the intake valve 40 based on a detected signal from an impeller water level detecting means 96 which detects whether water level is above or below the impeller 54, thus it is possible to suppress air/water operation.

3. 发明专利

JPH0861294A PUMP UNIT LIFTING DEVICE FOR PULL-OUT TYPE SUBMERGED MOTOR PUMP 失效
公开(公告)号：JPH0861294A
公开(公告)日：1996-03-08
申请号：JP21818894
申请日：1994-08-19
申请人： DENGYOSHA MACH WORKS , SOGO GIKEN KK
发明人： FUKADA HIROSHI , ANDO AKIRA
IPC分类号： F04D13/08 , F04D29/60
摘要： PURPOSE: To provide a lifting device which is devised to couple to and uncouple from a pump unit lifting ring in a column. CONSTITUTION: A cylinder body 30 is axially movable within a column 10. An oscillating support shaft 38 crossing a shaft at right angles is arranged on the inner side of the cylinder body 30 is provided and a hook 40 is oscillatorily suspended. A frame body lifting ring 48 is arranged at the upper part of the cylinder body 30. The lower end of the hook 40 is brought into contact with a pump unit lifting ring 22 through lifting and forms a first inclination side 40b which is inclined so that it forms the opening side of a hook engaging part 40a. A side extending obliquely upward from the hook engaging part 40a is brought into contact with the pump unit lifting ring 22 present at the hook engaging part 40a through lifting-down and the contact part forms a second inclination side 40c and inclined to be dislocated from the hook engaging part 40. Further, a notch recessed part 40d is formed in a top and when the hook 40 is inclined to a given angle, a stopper 44 is engaged therewith, and the hook 40 is held in given angle inclination.

4. 发明专利

JPH05133380A PULL-OUT TYPE SUBMERGED MOTOR PUMP 失效
公开(公告)号：JPH05133380A
公开(公告)日：1993-05-28
申请号：JP31981291
申请日：1991-11-07
申请人： DENGYOSHA MACH WORKS
发明人： KOIZUMI YASUO , FUKADA HIROSHI
IPC分类号： F04D13/08 , F04D7/02 , F04D29/58
摘要： PURPOSE:To attain continued operation by preventing a submerged motor pump from being damaged by heating even when placed in a racing condition. CONSTITUTION:A plurality of radiating fins 32, 32... are protruded parallelly to a flow of water from a motor frame 28, in a flow path 40 between the external peripheral wall of the motor frame 28 of a submerged water pump 20 and the internal peripheral wall of a column pipe 10. An air valve 34, by which a flow path of air is formed in a racing condition, is provided on a column hatch 14.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式