Rotary vacuum pump, vacuum device, and pump connection structure

Rotary vacuum pump, vacuum device, and pump connection structure

A rotary vacuum pump includes a pump casing on which an intake port flange is formed, a rotor which has a rotating side evacuating device and is driven to rotate at high speed inside the pump casing, and a fixing side evacuating device which is provided inside the pump casing and generates an evacua...

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Hauptverfasser: OUE KOHEI, NAKAMURA FUSAO, ASHIDA OSAMU
Format: Patent
Sprache:eng
Schlagworte:
BLASTING
ENGINE PLANTS IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
STEAM ENGINES
WEAPONS
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creator OUE KOHEI
NAKAMURA FUSAO
ASHIDA OSAMU
description A rotary vacuum pump includes a pump casing on which an intake port flange is formed, a rotor which has a rotating side evacuating device and is driven to rotate at high speed inside the pump casing, and a fixing side evacuating device which is provided inside the pump casing and generates an evacuating effect together with the rotating side evacuating device. The intake port flange is fastened to a device subject to evacuating by a bolt. A through-hole is formed in the intake port flange for inserting the bolt and has a diameter larger than that of the bolt. A gap forming device for forming a gap between the bolt and the through-hole in the intake port flange is provided on a matching surface of the through-hole.
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The intake port flange is fastened to a device subject to evacuating by a bolt. A through-hole is formed in the intake port flange for inserting the bolt and has a diameter larger than that of the bolt. 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subjects BLASTING
ENGINE PLANTS IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
STEAM ENGINES
WEAPONS
title Rotary vacuum pump, vacuum device, and pump connection structure
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