Invention Grant
- Patent Title: Liquid ring pump and method for operating a liquid ring pump
- Patent Title (中): 液环泵和操作液环泵的方法
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Application No.: US13640504Application Date: 2011-03-31
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Publication No.: US08944778B2Publication Date: 2015-02-03
- Inventor: Vesa Lappalainen
- Applicant: Vesa Lappalainen
- Applicant Address: FI Espoo
- Assignee: Evac International Oy
- Current Assignee: Evac International Oy
- Current Assignee Address: FI Espoo
- Agency: Kilpatrick Townsend & Stockton LLP
- Agent Dean W. Russell, Esq.; Kristin M. Crall, Esq.
- Priority: FI20105386 20100414
- International Application: PCT/FI2011/050276 WO 20110331
- International Announcement: WO2011/128502 WO 20111020
- Main IPC: F04C19/00
- IPC: F04C19/00 ; F04C7/00 ; F04C27/00 ; F04D3/02 ; F04C29/12
Abstract:
The invention relates to a liquid ring pump (1) for generating vacuum and for pumping a flow of sewage in a vacuum sewage system. The liquid ring pump comprises in the direction of the flow of sewage a pump inlet (11), an inlet chamber (13), a pump housing (14) provided with a rotor (15) arranged on a drive shaft (16) provided with a mechanical seal (20), an outlet chamber (17), and an pump outlet (19). The mechanical seal (20) is arranged within the outlet chamber (17). The outlet chamber (17) is provided with an integrated extension (18) providing an enlargement of the outlet chamber (17) in order to retain the flow of sewage in the outlet chamber (17) before it is discharged from the pump outlet (19) in order to improve the lubrication of the mechanical seal (20).
Public/Granted literature
- US20130089440A1 LIQUID RING PUMP AND METHOD FOR OPERATING A LIQUID RING PUMP Public/Granted day:2013-04-11
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