JPS54128811A - Jet nozzle for excavation - Google Patents
Jet nozzle for excavationInfo
- Publication number
- JPS54128811A JPS54128811A JP3756478A JP3756478A JPS54128811A JP S54128811 A JPS54128811 A JP S54128811A JP 3756478 A JP3756478 A JP 3756478A JP 3756478 A JP3756478 A JP 3756478A JP S54128811 A JPS54128811 A JP S54128811A
- Authority
- JP
- Japan
- Prior art keywords
- piston
- opening
- nozzle
- valve body
- excavation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Nozzles (AREA)
Abstract
PURPOSE: To prevent intrusion of fine ore particles into a nozzle and improve excavation efficiency by water jet by providing a piston connected with a valve body inside the nozzle and ensuring that an opening is opened only when high-pressure water is jetted.
CONSTITUTION: In a jet nozzle 1 is fitted a valve body 6 which plugs up an opening for preventing the intrusion of fine iron ore powder slurry through the opening 10. The valve body 6 is integral with a piston 7 at the rear end through a shaft 5, and the opening is opened and closed by the reciprocation of the piston 7 inside the boltlike cylinder A. The piston 7 is connected with a bearing supporter plate 4 through a spring 8. In off-excavation time, the opening is plugged up by the function of the spring 8. In excavation time, high-pressure water is fed into the nozzle so as to drive the piston 7 back and spout a water jet. The plate 4 projects inwardly from slightly slanted corner portion 1C and supports a bearing 3 concentrically.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3756478A JPS54128811A (en) | 1978-03-30 | 1978-03-30 | Jet nozzle for excavation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3756478A JPS54128811A (en) | 1978-03-30 | 1978-03-30 | Jet nozzle for excavation |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54128811A true JPS54128811A (en) | 1979-10-05 |
Family
ID=12501011
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3756478A Pending JPS54128811A (en) | 1978-03-30 | 1978-03-30 | Jet nozzle for excavation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54128811A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5164569A (en) * | 1990-11-29 | 1992-11-17 | Trafimet Sas | Plasma-operated cutting torch with contact starting |
JP2003026188A (en) * | 2001-07-10 | 2003-01-29 | Tatsue Seiko Kk | Liquid storage bag |
JP2022026128A (en) * | 2020-07-30 | 2022-02-10 | トヨタ自動車株式会社 | Cooling device for heat exchanger |
-
1978
- 1978-03-30 JP JP3756478A patent/JPS54128811A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5164569A (en) * | 1990-11-29 | 1992-11-17 | Trafimet Sas | Plasma-operated cutting torch with contact starting |
JP2003026188A (en) * | 2001-07-10 | 2003-01-29 | Tatsue Seiko Kk | Liquid storage bag |
JP2022026128A (en) * | 2020-07-30 | 2022-02-10 | トヨタ自動車株式会社 | Cooling device for heat exchanger |
CN114056069A (en) * | 2020-07-30 | 2022-02-18 | 丰田自动车株式会社 | Cooling device of heat exchanger |
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